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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 6048. Отображено 100.
29-03-2012 дата публикации

Hydrogen sulfide conversion to hydrogen

Номер: US20120076721A1
Автор: James A. Wasas
Принадлежит: SWAPSOL Corp

A process and system for substantially eliminating contaminants from a gas and a gas produced therefrom.

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Номер записи: 1
17-05-2012 дата публикации

Separation of gases

Номер: US20120118012A1
Автор: Jonathan Alec Forsyth, Kazumasa Ogura, Michael Edward Bailey, Yasushi Mori
Принадлежит: Individual

A process for separating a mixture of gases into a relatively condensable first component and a relatively non-condensable second component is provided. The first component comprises one or more gases selected from the group consisting of carbon dioxide, carbonyl sulphide and hydrogen sulphide and the second component one or more gases selected from the group consisting of hydrogen, methane, ethane, carbon monoxide, nitrogen, oxygen and synthesis gas. The process itself comprises the following steps: (a) compressing and cooling a mixture of said first and second components in at least one compressor and at least one heat exchanger to a temperature and elevated pressure at which the first components condense and a two-phase gas-liquid mixture is formed; (b) separating the two phase mixture so formed into separate liquid first and gaseous second component fractions in a fractionation unit; (c) extracting residual first component from the separated gaseous second component fraction by scrubbing the second component at elevated pressure with a solvent (e.g. methanol) in a scrubber. In examples, the method further includes one or more steps of warming and expanding the gaseous second component fraction using at least one heat exchanger to exchange heat with a process stream and at least one turbo-expander capable of recovering mechanical work. The process described is highly energy efficient and is especially useful in hydrogen power plants, Integrated Gasification Combined Cycles (IGCC) and for sweetening sour natural gas.

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Номер записи: 2
06-09-2012 дата публикации

Swing Adsorption Processes Utilizing Controlled Adsorption Fronts

Номер: US20120222551A1
Автор: Harry W. Deckman
Принадлежит: ExxonMobil Research and Engineering Co

A process for reducing the loss of valuable products by improving the overall recovery of a contaminant gas component in swing adsorption processes. The present invention utilizes at least two adsorption beds, in series, with separately controlled cycles to control the adsorption front and optionally to maximize the overall capacity of a swing adsorption process and to improve overall recovery a contaminant gas component from a feed gas mixture.

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Номер записи: 3
06-09-2012 дата публикации

Pressure-Temperature Swing Adsorption Process for the Separation of Heavy Hydrocarbons from Natural Gas Streams

Номер: US20120222552A1
Автор: Harry W. Deckman, Peter I. Ravikovitch, Robert A. Johnson, Thomas N. Anderson
Принадлежит: ExxonMobil Research and Engineering Co

The present invention relates to a pressure-temperature swing adsorption process wherein gaseous components that have been adsorbed can be recovered from the adsorbent bed at elevated pressures. In particular, the present invention relates to a pressure-temperature swing adsorption process for the separation of C 2+ hydrocarbons (hydrocarbons with at least 2 carbon atoms) from natural gas streams to obtain a high purity methane product stream. In more preferred embodiments of the present processes, the processes may be used to obtain multiple, high purity hydrocarbon product streams from natural gas stream feeds resulting in a chromatographic-like fractionation with recovery of high purity individual gaseous component streams.

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Номер записи: 4
06-09-2012 дата публикации

Gas Purification Process Utilizing Engineered Small Particle Adsorbents

Номер: US20120222555A1
Автор: Daniel P. Leta, Harry W. Deckman, Ramesh Gupta
Принадлежит: ExxonMobil Research and Engineering Co

A gas separation process uses a structured particulate bed of adsorbent coated shapes/particles laid down in the bed in an ordered manner to simulate a monolith by providing longitudinally extensive gas passages by which the gas mixture to be separated can access the adsorbent material along the length of the particles. The particles can be laid down either directly in the bed or in locally structured packages/bundles which themselves are similarly oriented such that the bed particles behave similarly to a monolith but without at least some disadvantages. The adsorbent particles can be formed with a solid, non-porous core with the adsorbent formed as a thin, adherent coating on the exposed exterior surface. Particles may be formed as cylinders/hollow shapes to provide ready access to the adsorbent. The separation may be operated as a kinetic or equilibrium controlled process.

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Номер записи: 5
06-12-2012 дата публикации

Process for The Production of Sulfur from Sulfur Dioxide with Tail Gas Recycle

Номер: US20120308474A1
Автор: Mahin Rameshni, Stephen L. SANTO
Принадлежит: RAMESHNI and ASSOCIATES TECHNOLOGY and ENGINEERING

The reduction of the gas stream containing sulfur dioxide to elemental sulfur is carried out by reacting a reducing gas, such as natural gas, methanol or a mixture of hydrogen and carbon monoxide, with recycled sulfur and recycled tail gas to produce a stream containing hydrogen sulfide that may be reacted with the gas stream that contains sulfur dioxide. Gas streams with a molar concentration of sulfur dioxide from 1 to 100% may be processed to achieve nearly 100% sulfur recovery efficiency.

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Номер записи: 6
17-01-2013 дата публикации

Method and device for processing sour gas rich in carbon dioxide in a claus process

Номер: US20130017144A1
Автор: Johannes Menzel
Принадлежит: THYSSENKRUPP UHDE GMBH

A method and apparatus for processing a sour gas rich in carbon dioxide in a Claus process, so sulfur compounds are removed by a selective solvent in a gas scrubbing process. Sulfur components and carbon dioxide, are separated into at least two sour gas fractions, wherein at least one sour gas fraction having a higher content of sulfur components is obtained, wherein the fraction having the highest hydrogen sulfide content is introduced in the thermal reaction stage of the Claus furnace with a gas containing oxygen by means of a burner. The sulfur is converted to sulfur dioxide in the thermal reaction stage of the Claus furnace and exhaust gases are discharged into the closed Claus reaction chamber behind the burner. The remaining sour gas fractions stripped of sulfur components are fed to the Claus reaction chamber and are mixed with the combustion gases leaving the burner.

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Номер записи: 7
21-03-2013 дата публикации

Configurations and methods of treatment of sulfur-containing vent gases

Номер: US20130071315A1
Автор: Elmo Nasato, Theresa Flood, Thomas Chow, Uday Navin Parekh
Принадлежит: Fluor Technologies Corp

Sulfur emissions from liquid sulfur are reduced, or even entirely avoided by degassing the liquid sulfur at pressure in an out-of-pit vessel and by sweeping the rundown pit (or vessel) with a sweep gas that is non-poisonous for a hydrogenation catalyst. Acid gases from degassing are fed at pressure to the Claus unit, while sweep gases are fed to the tail gas treatment unit to substantially recycle the acid gases to extinction. In preferred plants and methods, motive fluids and booster eductors or compressors are not needed, and incineration of the acid gases can be avoided.

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Номер записи: 8
29-08-2013 дата публикации

Ammonia destruction methods for use in a claus tail gas treating unit

Номер: US20130224094A1
Автор: Mahin Rameshni
Принадлежит: WorleyParsons Group Inc

Oxidative and reductive methods are described for the cost-effective destruction of an ammonia-bearing gas stream, potentially containing minor but significant quantities of hydrogen sulfide (H 2 S), in a conventional Claus sulfur recovery tail gas treating unit, using controlled rates and compositions of combustion gases in order to obtain the temperatures necessary for the desired destruction of unwanted combustibles. In accordance with the present disclosure, a reductive method for the destruction of ammonia in a Claus tail gas treating unit is described, wherein the method includes introducing an ammonia-containing gas stream into a first combustion zone of a reactor in combination with a first oxygen-containing air stream to generate a first combustion gas stream composition; introducing a hydrocarbon-containing fuel gas stream and a second oxygen-containing air stream into a second combustion zone of the reactor to generate a second combustion gas stream composition; combining the first and second combustion gas stream compositions in a waste heat boiler to generate a waste effluent gas; contacting the waste effluent gas with a Claus tail gas stream to produce a primary waste stream; and contacting the primary waste stream with a hydrogenation catalyst system for a period of time sufficient to reduce NO x in the primary waste stream to ammonia.

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Номер записи: 9
05-09-2013 дата публикации

Method of Generating Micronized Sulphur

Номер: US20130230448A1
Автор: Abry Raymond G.F., Beasley Todd, Johnson Richard Lyle, Kuzub Richard Eugene, Tak Jin Kwon
Принадлежит:

A method of producing micronized sulphur wherein elemental sulphur is dissolved in a solvent for sulphur to produce a sulphur-solvent solution and precipitation of the dissolved sulphur is effected or controlled by manipulation of at least one of pressure, temperature or water content in the solvent to produce the micronized sulphur. 1. A method of producing micronized sulphur comprising:dissolving elemental sulphur in a solvent for sulphur to produce a sulphur-solvent solution;controlling precipitation of said dissolved sulphur in said sulphur-solvent solution by manipulation of at least one of pressure, temperature or water content to produce micronized sulphur.2. The method of claim 1 , wherein said control of precipitation comprises adjusting the temperature of said sulphur-solvent solution.3. The method of claim 1 , wherein said solvent comprises anhydrous ammonia containing less than 0.3 wt. % water.4. The method of claim 1 , wherein said solvent comprises hydrous ammonia containing from 0.3 to 70 wt. % water.5. The method of claim 4 , wherein said solvent comprises hydrous ammonia containing from 0.3 to 10 wt. % water.6. The method of claim 1 , wherein said solvent is one wherein the solubility of said elemental sulphur is directly proportional to temperature.7. The method of claim 1 , wherein said solvent is one wherein the solubility of said elemental sulphur is inversely proportional to temperature.8. The method of claim 1 , wherein said solvent is selected from the group consisting of anhydrous ammonia claim 1 , hydrous ammonia claim 1 , liquid sulphur dioxide claim 1 , liquid carbon dioxide claim 1 , supercritical carbon dioxide claim 1 , carbon disulphide claim 1 , dimethydisulphide and mixtures thereof.9. The method of claim 1 , wherein said micronized sulphur has an average particle size of less than 1000 μm claim 1 , preferably less than 10 μm.10. The method of claim 1 , wherein said sulphur is present in said solvent in an amount up to saturation ...

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Номер записи: 10
12-12-2013 дата публикации

RECOVERY OF SULFUR FROM SULFUR-CONTAINING WASTE

Номер: US20130330266A1
Автор: Garden Israel, Garden Ofer, Golub Gilad, Subovich Julio
Принадлежит:

The invention provides an environmentally friendly industrial process for treating sulfur-containing waste, resulting in recovered pure sulfur and a sulfur-free ash for landfilling. 1. A process for disposing of sulfur-containing waste , comprising the steps ofi) heating a sulfur-containing waste in a receptacle at a temperature of between 120 and 160°, thereby obtaining a mixture comprising raw molten sulfur;ii) optionally separating solids, by rough screening, from said mixture obtained in step i);iii) transferring said mixture obtained in step i) optionally screened as in said step ii) from said receptacle to a separating reactor heated at a temperature of between 450 and 500° C., whereby creating sulfur vapor and sulfur-free solid phase;iv) transferring said sulfur vapor formed in step iii) from said reactor to a condenser cooled to a temperature of between 120 and 140° C., whereby obtaining molten sulfur;v) transferring said solid phase formed in step iii) from said reactor to a cooling conveyor, and collecting said phase as an ash for landfilling; andvi) removing gases from said condenser by means of an off-gas cleaner, and collecting from said condenser essentially pure sulfur.2. A process according to claim 1 , further comprising a step of recovering heat from said sulfur condenser by transferring said heat to water vapor.3. A process according to claim 1 , further comprising a step of recovering heat from said cooling conveyor.4. A process according to claim 1 , wherein said step ii) of separating comprises screening.5. A process according to claim 1 , comprising converting harmful waste to essentially pure sulfur product and to an essentially sulfur-free solid waste for landfilling.6. A process according to claim 5 , wherein said sulfur product contains at least 99.0 wt % sulfur.7. A process according to claim 5 , wherein said solid for landfilling contains less than 1 wt % sulfur.8. A process according to claim 5 , wherein said sulfur product contains at ...

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Номер записи: 11
16-01-2014 дата публикации

Sulfur recovery unit and sulfur recovery method

Номер: US20140017162A1
Автор: Hiroyuki Kosasayama, Mitsuru Kida, Shingo Arai, Tatsuo Kamisuki, Yasushi Yamada
Принадлежит: JGC Corp

A sulfur recovery unit comprising: a reaction furnace configured to carry out a high-temperature Claus reaction between hydrogen-sulfide-containing gas and oxygen-containing gas introduced to the reaction furnace; a sulfur condenser configured to cool reaction gas discharged from the reaction furnace and condense sulfur contained in the reaction gas; and a pipe that connects the reaction furnace to the sulfur condenser, wherein the reaction furnace is fixed to the ground; and the sulfur condenser and the pipe are arranged so as to be able to move relative to the reaction furnace.

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Номер записи: 12
20-02-2014 дата публикации

Sodium Iron(II)-Hexacyanoferrate(II) Battery Electrode and Synthesis Method

Номер: US20140050982A1
Автор: Sean Andrew VAIL, Yuhao Lu
Принадлежит: Sharp Laboratories of America Inc

A method is provided for synthesizing sodium iron(II)-hexacyanoferrate(II). A Fe(CN) 6 material is mixed with the first solution and either an anti-oxidant or a reducing agent. The Fe(CN) 6 material may be either ferrocyanide ([Fe(CN) 6 ] 4− ) or ferricyanide ([Fe(CN) 6 ] 3− ). As a result, sodium iron(II)-hexacyanoferrate(II) (Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O is formed, where X is less than or equal to 1, and where M is in a range between 0 and 7. In one aspect, the first solution including includes A ions, such as alkali metal ions, alkaline earth metal ions, or combinations thereof, resulting in the formation of Na 1+X A Y Fe[Fe(CN) 6 ] Z .M H 2 O, where Y is less than or equal to 1. Also provided are a Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O battery and Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O battery electrode.

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Номер записи: 13
06-03-2014 дата публикации

Process and apparatus for extracting sulfur compounds in a hydrocarbon stream

Номер: US20140066682A1
Автор: Aziz Sattar, George K. Xomeritakis, Jonathan Andrew Tertel, Travis C. Bowen
Принадлежит: UOP LLC

One exemplary embodiment can be a process for extracting sulfur compounds in a hydrocarbon stream. The process can include feeding a hydrocarbon stream containing sulfur compounds to a prewash zone containing an alkali, withdrawing a prewashed hydrocarbon stream from the prewash zone, and feeding the prewashed hydrocarbon stream to a mass transfer zone for extracting one or more thiol compounds from the prewashed hydrocarbon stream. Often, the mass transfer zone includes a hollow fiber membrane contactor.

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Номер записи: 14
13-03-2014 дата публикации

Method for the preparation of anhydrous hydrogen halides, inorganic substances and/or inorganic hydrides by using as reactants inorganic halides and reducing agents

Номер: US20140070137A1
Автор: Gregorio Tarancon Iii
Принадлежит: Midwest Inorganics LLC

A method for completely reducing an inorganic halide to obtain a non-halogen inorganic substance and/or hydride thereof and preferably anhydrous hydrogen halide fluid using inorganic halide substances, such as sulfur hexafluoride, nitrogen trifluoride, tungsten hexafluoride, uranium hexafluoride and others by reduction with a reducing agent at a proper temperature. The reducing agents may be molecular hydrogen, inorganic hydrides and inorganic metallic elements; molecular hydrogen is preferable, but in certain instances the inorganic hydrides are used, as well as inorganic metallic elements such as calcium and magnesium.

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Номер записи: 15
20-03-2014 дата публикации

Process for Reducing Sulfur Emission of Sulfur Plant

Номер: US20140079614A1
Автор: LI Qinshu, LIU Aihua, Liu Jianli, REN Jianbang, XU Yongchang, ZHANG Yiling
Принадлежит: CHINA PETROLEUM & CHEMICAL CORPORATION

The present invention provides a process for reducing sulfur emission of a sulfur plant, wherein the sulfur plant includes a thermal reaction unit, a catalytic reaction unit and a tail-gas purification unit, the process is characterized in that the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the catalytic reaction unit, and/or the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the tail-gas purification unit. In present invention, the H2S in purified tail-gas can be reduced to no more than 10 ppm(v) and the SOemission concentration of the sulfur plant can be reduced to no more than 100 mg/m. 1. A process for reducing sulfur emission of a sulfur plant , wherein the sulfur plant includes a thermal reaction unit , a catalytic reaction unit and a tail-gas purification unit , the process includes:{'sub': 2', '2', '2', '2', '2, 'introducing a HS-containing acid gas into the thermal reaction unit, combusting the HS-containing acid gas to produce SO, and conducting Claus reaction between HS and SOso as to produce element sulfur and a process gas, wherein the element sulfur is introduced into a liquid sulfur tank to obtain liquid sulfur;'}introducing the process gas into the catalytic reaction unit to carry out Claus catalytic conversion so as to obtain element sulfur and Claus tail-gas, wherein the obtained element sulfur is introduced into the liquid sulfur tank; and{'sub': 2', '2, 'introducing the Claus tail-gas into the tail-gas purification unit, wherein the Claus tail-gas firstly undergoes hydrogenation to produce a hydrogenation tail-gas, and then the hydrogenation tail-gas which comprises HS is cooled down and introduced into an absorption column, wherein HS is absorbed in the absorption column to provide a purified tail-gas;'}characterized in that the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the catalytic reaction ...

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Номер записи: 16
04-01-2018 дата публикации

Sulfur Trap

Номер: US20180002177A1
Автор: Smith Strom W.
Принадлежит:

A sulfur trap provides separation of elemental molten sulfur from a process stream comprising a mixture of sulfur and associated tail-gases. The sulfur trap comprises a vertically-oriented cylindrical wall having a chamber for receiving the process stream, a float positioned in the chamber, the float attached to a float end of a lever, a nozzle insert attached to the distal end of the lever, and a lever fulcrum positioned intermediate the lever float end and the lever nozzle insert end. The float, lever, nozzle insert and outlet are constructed to allow the float position to control nozzle insert engagement of the outlet, particularly to close the outlet when the float is elevated by molten sulfur and to disengage from the outlet to allow discharge flow of liquid sulfur at a determined level of sulfur within the chamber. Embodiments of a method of separating liquid sulfur from gases are also provided. 1. A sulfur trap for separation of liquid sulfur from a process stream comprising:a chamber;a chamber fluid inlet;a chamber gas outlet;a chamber liquid outlet; anda chamber liquid level control system; said chamber liquid outlet is disposed below said chamber fluid inlet and said chamber gas outlet;', 'said chamber liquid outlet comprises a discharge orifice; and', a float;', 'a fulcrum;', 'a nozzle insert; and', 'a lever comprising a float end and a nozzle insert end;, 'said chamber liquid level control system comprises, said lever is pivotally connected to said fulcrum intermediate said float end and said nozzle insert end;', 'said float is attached to said lever float end;', 'said nozzle insert is attached to said lever nozzle insert end;', 'rise of said float raises said lever float end and lowers said nozzle insert end via pivoting of said lever about said fulcrum;', 'fall of said float lowers said lever float end and raises said nozzle insert end via pivoting of said lever about said fulcrum;', 'said chamber liquid level control system operates to engage said ...

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Номер записи: 17
03-01-2019 дата публикации

PROCESSES FOR FORMING VULCANIZABLE ELASTOMERIC FORMULATIONS AND VULCANIZED ELASTOMERIC ARTICLES

Номер: US20190002665A1
Автор: Barnicki Scott Donald, Hembre Robert Thomas, Ignatz-Hoover Frederick, Kreulen Henk, Smith Andrew Neil, Velamakanni Aruna M.
Принадлежит: EASTMAN CHEMICAL COMPANY

Processes for forming a vulcanizable elastomeric formulation are disclosed. The processes include the steps of mixing an elastomer with a vulcanizing agent to form a vulcanizable elastomeric formulation that includes the vulcanizing agent dispersed in the elastomeric compound, wherein the vulcanizing agent includes a cyclododecasulfur compound. A process for forming a vulcanized elastomeric article is also described. 1. A process for forming a vulcanized elastomeric article , said process comprising (a) mixing an elastomer with a vulcanizing agent to form a vulcanizable elastomeric formulation that includes said vulcanizing agent dispersed in said elastomer; (b) forming the vulcanizable elastomeric formulation into a formed shape; and (c) vulcanizing the formed shape to form said vulcanized elastomeric article; wherein at least one of said mixing and forming steps comprises increasing the bulk average processing temperature of said vulcanizable elastomeric formulation to greater than 125° C. for at least a portion of said step.2. The process of claim 1 , wherein at least one of said mixing and forming steps comprises increasing the bulk average processing temperature of said vulcanizable elastomeric formulation to greater than 128° C. for at least a portion of said step.3. The process of claim 1 , wherein at least one of said mixing and forming steps comprises increasing the bulk average processing temperature of said vulcanizable elastomeric formulation to greater than 130° C. for at least a portion of said step.4. The process of claim 14 , wherein at least one of said mixing and forming steps comprises increasing the bulk average processing temperature of said vulcanizable elastomeric formulation to greater than 135° C. for at least a portion of said step.5. The process of claim 1 , wherein the vulcanizing agent comprises a cyclododecasulfur compound characterized by a DSC melt point onset of from about 155° C. to about 167° C. when measured at a DSC heat rate of ...

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Номер записи: 18
04-01-2018 дата публикации

Electrode for lithium secondary battery, method for preparing same, electrode assembly for lithium secondary battery comprising same, and lithium secondary battery comprising same

Номер: US20180006307A1
Автор: Byoung Hyo Jung, Charles Kiseok SONG, Doo Kyung Yang, Ki Young Kwon, Seong Eun Park
Принадлежит: LG Chem Ltd

The present invention relates to an electrode for a lithium secondary battery, a method for preparing the same, an electrode assembly for a lithium secondary battery comprising the same, and a lithium secondary battery comprising the same, wherein the electrode comprises an electrode active material, an aqueous binder, a compound represented by Formula 1, and a compound represented by Formula 2. Formula 1 and Formula 2 are the same as set forth in the specification. The electrode for a lithium secondary battery improves the physical properties of the aqueous binder in a manner whereby a cross-linking reaction material is combined with the aqueous binder, so that the electrode can improve initial charge/discharge efficiency and the life span of a lithium secondary battery, preferably a lithium sulfur battery, and improve the area capacity of the electrode.

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Номер записи: 19
08-01-2015 дата публикации

METHOD AND SYSTEM FOR OBTAINING SWEET GAS, SYNTHETIC GAS AND SULPHUR FROM NATURAL GAS

Номер: US20150008368A1
Автор: AGUILAR VEGA Manuel de Jesus, CASTRUITA DE LEON Griselda, DURAN GARCIA Miguel Angel, GARCIA CERDA Luis Alfonso, GUTIERREZ MEJIA Alejandra Aimee, HIDALGO PEREZ Miguel Angel, LORIA BASTARRACHEA Maria Isabel de los Dolores, NEIRA VELAZQUEZ Maria Guadalupe, PACHECO PACHECO Marquidia Josseline, PACHECO SOTELO Joel Osvaldo, Perera Mercado Yibran Argenis, RAMOS FLORES Jose Fidel, SANTIAGO GARCIA Jose Luis, VALDIVIA BARRIENTOS Ricardo, VILLARREAL CARDENAS Luis Alberto
Принадлежит:

A method for obtaining sweet gas, synthetic gas, and sulphur from natural gas. The method includes the steps of removing impurities from the natural gas for obtaining pre-treated natural gas; sweetening the pre-treated natural gas through a separation using a plurality of membranes for obtaining sweet gas and acid gases; ionizing the acid gases to dissociate them into sulphur and synthetic gas with remnants of acid gases; and neutralizing the synthetic gas with remnants of acid gases for generating sweet gas. Likewise, a system is presented on how to implement the method. 1. A method for obtaining sweet gas , synthetic gas , and sulphur from natural gas , comprising the steps of:removing impurities from said natural gas for obtaining pre-treated natural gas;sweetening said pre-treated natural gas through a separation using a plurality of membranes for obtaining sweet gas and acid gases;ionizing said acid gases to dissociate them into sulphur and synthetic gas with remnants of acid gases; andneutralizing said synthetic gas with remnants of acid gases for generating synthetic gas.2. The method of claim 1 , wherein before the step of removing impurities from said natural gas for obtaining pre-treated natural gas claim 1 , said natural gas is taken to a temperature from 35 to 50° C. and to a pressure from 65 to 100 kg/cm.3. The method of claim 1 , wherein said step of removing impurities from said natural gas for obtaining pre-treated natural gas claim 1 , includes the steps of:separating liquids and solids present in said natural gas through the use of a separator; andcompletely removing liquid and solid contaminants liquids from said natural gas by filtering said natural gas in a coalescing filter for obtaining pre-treated natural gas.4. The method of claim 1 , wherein said natural gas comprises at least one gaseous hydrocarbon claim 1 , CO& HS; said gaseous hydrocarbon is selected from a group consisting of methane claim 1 , propane claim 1 , ethylene claim 1 , ...

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Номер записи: 20
11-01-2018 дата публикации

REMOVAL OF HYDROGEN SULFIDE AND SULFUR RECOVERY FROM A GAS STREAM BY CATALYTIC DIRECT OXIDATION AND CLAUS REACTION

Номер: US20180008930A1
Автор: HEISEL Michael, MARES Benoit
Принадлежит: PROSERNAT

A process for the removal of hydrogen sulfide and sulfur recovery from a HS-containing gas stream by catalytic direct oxidation and Claus reaction through two or more serially connected catalytic reactors, wherein a specific control of the oxygen supplement is operated. The control and improvement of the process is obtained by complementing, in each major step of the process, the HS-containing gas stream by a suitable flow of oxygen, namely before the HS-containing gas stream enters the Claus furnace, in the first reactor of the process and in the last reactor of the process. Especially in application in a SubDewPoint sulfur recovery process the HS/SOratio is kept constant also during switch-over of the reactors R1 and R by adding the last auxiliary oxygen containing gas directly upstream the last reactor R so that the HS/SOratio can follow the signal of the ADA within a few seconds. 1. A process for the removal of hydrogen sulfide (HS) from a HS-containing gas stream through two or more serially connected catalytic reactors , which process comprises:{'sub': 2', '2, 'a) mixing the HS-containing gas stream with a main oxygen-containing gas stream to obtain a gas stream containing both HS and oxygen,'}{'sub': 2', '2, 'b) introducing the obtained gas stream containing both HS and oxygen into a furnace whereby a gas stream depleted in HS is obtained,'}{'sub': '2', 'c) transferring the gas stream depleted in HS to a sulfur condenser to obtain a gas stream depleted in sulfur,'}{'sub': 2', '2', '2', '2', 'max', '2, 'sup': 'R1', 'd) introducing the gas stream depleted in sulfur, optionally together with a first auxiliary oxygen-containing gas stream, into a first catalytic reactor R1 containing a catalyst system which catalyzes the Claus reaction of HS with sulfur dioxide (SO), the hydrolysis of COS and CSand optionally direct oxidation of HS with oxygen to sulfur, said reactor being operated at a maximum temperature Tbetween 290 and 350° C., whereby a gas stream depleted ...

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Номер записи: 21
11-01-2018 дата публикации

METHOD FOR PREPARING HIGHLY NITROGEN-DOPED MESOPOROUS CARBON COMPOSITES

Номер: US20180008968A1
Автор: BA Housseinou, DUONG-VIET Cuong, GIAMBASTIANI Giuliano, Liu Yuefeng, NGUYEN-DINH Lam, NHUT Jean-Mario, PHAM-HUU Cuong
Принадлежит:

Some embodiments are directed to a new methodology aimed at preparing highly N-doped mesoporous carbon macroscopic composites, and their use as highly efficient heterogeneous metal-free catalysts in a number of industrially relevant catalytic transformations. 1. A method of preparing macroscopic composites made of a macroscopic support coated with a thin layer of highly nitrogen-doped mesoporous carbon phase (active phase) , said method comprising:{'sub': 4', '2', '3, '(a) providing an aqueous solution of (i) (NH)CO; (ii) a carbohydrate as carbon source, selected from aldose monosaccharides and glycosilated forms thereof, disaccharides and oligosaccharides or dextrine deriving from biomass conversion, and (iii) a carboxylic acid source selected from citric acid, and any other mono-, di-, tri-, and poly-carboxylic acid or their ammonium mono-, di-, tri- and poly-basic forms;'} [ (a1) providing an aqueous solution of citric acid and a carbohydrate as carbon source, selected from aldose monosaccharides and glycosilated forms thereof, disaccharides and oligosaccharides;', '(c1) prior to step (c), immerging/soaking or impregnating the macroscopic support of step (b) in the aqueous solution of step (a1) for a suitable amount of time;', '(d1) optionally removing the immerged macroscopic support from the aqueous solution of step (a1) if an excess aqueous solution is used in step (c1);', '(e1′) optionally subjecting the resulting macroscopic support to a gentle thermal treatment (drying) under air at low temperatures from 45 to 55° C., preferably 50° C.±3° C.;', '(e1) subjecting the resulting macroscopic support to a first thermal treatment (drying) under air at moderate temperatures from 110-150° C.±5° C., preferably 130° C.±5° C.; and', '(f1) subjecting the thermally treated (dried) macroscopic support to a second thermal treatment under inert atmosphere at higher temperatures from 600-800° C.±10° C., preferably 600° C.±5° C.; thereby generating a macroscopic composite ...

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Номер записи: 22
12-01-2017 дата публикации

PROCESS FOR THE BIOLOGICAL CONVERSION OF BISULPHIDE INTO ELEMENTAL SULPHUR

Номер: US20170009258A1
Автор: JANSSEN Albert Joseph Hendrik, KLOK Jan, VAN DIJK Jan Henk, VAN HEERINGEN Gijs
Принадлежит: PAQELL B.V.

The invention is directed to a process for the biological conversion of bisulphide into elemental sulphur, comprising the following steps: a) converting bisulphide as dissolved in an aqueous solution to elemental sulphur in the presence of sulphide-oxidising bacteria and under anaerobic conditions to obtain a first liquid effluent comprising elemental sulphur and used sulphide-oxidising bacteria; b) regenerating the used sulphide-oxidising bacteria as obtained in step (a) and as comprised in an aqueous solution in the presence of an oxidant to obtain a second liquid effluent comprising regenerated sulphide-oxidising bacteria; c) separating elemental sulphur from either the first and/or the second liquid effluent; d) using the regenerated sulphide-oxidising bacteria in step (a) as the sulphide-oxidising bacteria. 1. A process for the biological conversion of bisulphide into elemental sulphur , comprising the following steps:a) converting bisulphide as dissolved in an aqueous solution to elemental sulphur in the presence of sulphide-oxidising bacteria and under anaerobic conditions wherein the concentration of molecular oxygen in the aqueous solution is at most 1 μM to obtain a first liquid effluent comprising elemental sulphur and used sulphide-oxidising bacteria;b) regenerating the used sulphide-oxidising bacteria as obtained in step (a) and as comprised in an aqueous solution in the presence of an oxidant to obtain a second liquid effluent comprising regenerated sulphide-oxidising bacteria;c) separating elemental sulphur from either the first and/or the second liquid effluent;d) using the regenerated sulphide-oxidising bacteria in step (a) as the sulphide-oxidising bacteria.2. The process according to claim 1 , wherein the concentration of molecular oxygen in the aqueous solution is at most 0.1 μM in step (a).3. The process according to claim 1 , wherein more than 80 mol % of the dissolved bisulphide is removed from the aqueous solution by biological remediation by ...

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Номер записи: 23
10-01-2019 дата публикации

Enhancement of claus tail gas treatment by sulfur dioxide-selective membrane technology

Номер: US20190010052A1
Автор: Iran D. Charry-Prada, Jean-Pierre R. Ballaguet, Milind M. Vaidya, Sebastien A. Duval
Принадлежит: Saudi Arabian Oil Co

A method for increasing sulfur recovery from an acid gas feed comprising the steps of introducing the acid gas feed and a sulfur dioxide enriched air stream to a Claus process to produce a product gas stream, introducing the product gas stream to a thermal oxidizer to produce a flue gas stream, cooling the flue gas stream to produce a cooled take-off stream, separating the cooled take-off stream into a saturated gas stream, heating the saturated gas stream to produce a membrane gas stream, introducing the membrane gas stream to a membrane sweeping unit, the membrane sweeping unit comprises a membrane, the sulfur dioxide in the membrane gas stream permeates the membrane of the membrane sweeping unit, introducing a sweep air stream, the sweep air stream collects the sulfur dioxide to create the sulfur dioxide enriched air stream.

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Номер записи: 24
14-01-2021 дата публикации

PROCESS FOR HYDROGEN SULFIDE SCRUBBING AND METHOD FOR FERRIC ION REGENERATION

Номер: US20210009913A1
Автор: ENHOFFER JOHN, KAUSHIK KUMARI I., YANG CHEN-LU
Принадлежит:

A process and method for removing hydrogen sulfide from a gas and regenerating ferric ions consumed in the hydrogen sulfide scrubbing process at low pH. A two-scrubber regenerative chemical scrubbing system for removing hydrogen sulfide from a gas that provides an economical system for removing hydrogen sulfide from a gas at low pH without the need for chelating agents. An oxide of manganese is used as a catalyst to enhance the regeneration of ferric ions in an aqueous solution under acidic conditions in the presence of oxygen. The process may further include contacting the aqueous solution with a second gas comprising air to replenish the dissolved oxygen in the aqueous solution. The regenerated solution comprising ferric ions can be reused to treat additional hydrogen sulfide containing gases. 1. A process for treating a hydrogen sulfide containing gas , comprising:contacting an aqueous solution containing ferric ions with the hydrogen sulfide containing gas, wherein the aqueous solution has a pH of about 6.0 or less,extracting and dissolving hydrogen sulfide from the hydrogen sulfide containing gas into the aqueous solution,reacting the dissolved hydrogen sulfide with the ferric ions in the aqueous solution to produce ferrous ions and sulfur, wherein the sulfur is insoluble in solution; andregenerating ferric ions in the aqueous solution using a catalyst.2. The process of claim 1 , further comprising contacting the aqueous solution with a second gas.3. The process of claim 2 , wherein the second gas is air.4. The process of claim 1 , wherein the aqueous solution has a pH of 4.5 or less.5. The process of claim 4 , wherein the aqueous solution has a pH of 2.0 or less.6. The process of claim 1 , wherein the catalyst is an oxide of manganese.7. The process of claim 6 , wherein the oxide of manganese is at least one of MnO claim 6 , MnO claim 6 , MnO claim 6 , MnO claim 6 , MnO claim 6 , and MnO.8. The process of claim 6 , wherein the oxide of manganese is MnO.9. The ...

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Номер записи: 25
15-01-2015 дата публикации

CLAUS PLANT PREPROCESSING SYSTEMS AND METHODS FOR REMOVAL OF AMMONIA FROM CLAUS PLANT FEED GASES

Номер: US20150014590A1
Автор: Dabee Sanjiv, Koppel Paul E., Mathias Paul M., Ravikumar Ravi
Принадлежит:

Systems and methods for pre-treatment of acid gas are presented in which ammonium is removed from the acid gas in an absorber that is operated at significantly elevated temperature using dilute phosphoric acid. While seemingly incompatible, absorbing ammonia at high heat in the absorber will allow for production of a diammonium phosphate product that is ultra-low in residual sulfurous compounds and prevent crystallization of phosphate salts due to the increased solubility of the salts in the hot diluted solvent. 1. A method of pre-processing a feed to a Claus plant , comprising:feeding an acid gas stream comprising sulfurous compounds, optionally carbon dioxide, and ammonia to an absorber, and contacting in the absorber the acid gas stream with dilute phosphoric acid to thereby form an absorber overhead product and an absorber bottom product;using a heat source to heat the absorber to thereby maintain a temperature of the absorber overhead product at ≧100° C.;wherein the absorber bottom product contains substantially none of the sulfurous compounds of the acid gas stream and more than 50% of the ammonia of the acid gas stream, and wherein the absorber overhead product contains substantially all of the sulfurous compounds of the acid gas stream and less than 50% of the ammonia of the acid gas stream;feeding the absorber overhead product to a Claus unit, and feeding the absorber bottom product to a downstream device.2. The method of wherein the ammonia is present in the acid gas stream in an amount of at least 10 vol %.3. The method of wherein a molar ratio of ammonia to total sulfurous compounds in the acid gas stream is greater than 1.4. The method of wherein the acid gas stream is provided from an acid gas source selected from the group consisting of a sour water stripper claim 1 , an acid gas removal unit claim 1 , and a low-temperature gasification unit claim 1 , or wherein the acid gas source comprises a hydroprocessing unit that is configured to receive a ...

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Номер записи: 26
18-01-2018 дата публикации

HIGH EFFICIENCY PROCESS FOR DEGASSING OF HYDROGEN SULFIDE FROM LIQUID SULFUR

Номер: US20180016143A1
Автор: Bela Frank, Christie Lance, DeWees Bill, Evans David, Nasato Elmo, Pollitt Stephen, Street Robin
Принадлежит: WorleyParsons Europe Ltd.

Processes and systems for degassing liquid sulfur may include mixing a gas, such as air, with a liquid sulfur mixture comprising sulfur, hydrogen sulfide, and hydrogen polysulfides to form a sulfur-gas mixture. The sulfur-gas mixture may then be transported to a separator, storage vessel or storage tank for separating the sulfur-gas mixture. 1. A process for degassing liquid sulfur , the process comprising:mixing a gas with a liquid sulfur mixture comprising sulfur, hydrogen sulfide, and hydrogen polysulfides to form a sulfur-gas mixture;transporting the sulfur-gas mixture to a separator, storage vessel or storage tank;separating the sulfur-gas mixture at a pressure below a water condensation point to recover a degassed sulfur product and a vapor stream comprising hydrogen sulfide.2. The process of claim 1 , wherein the gas comprises air claim 1 , nitrogen claim 1 , oxygen claim 1 , oxygen enriched air claim 1 , SO claim 1 , CO claim 1 , Claus reactor tail gas claim 1 , SRU tail gas and tail gas treatment unit recycle gas or tail gas claim 1 , or a mixture thereof.3. The process of or claim 1 , wherein the gas is air having a relative humidity of less than 10% measured at 25° F.4. The process of any of - claim 1 , further comprising mixing a liquid degasification catalyst with the liquid sulfur mixture.5. The process of claim 4 , wherein the liquid degasification catalyst comprises one or more of cyclohexylamine claim 4 , morpholine claim 4 , or urea.6. The process of any of - claim 4 , wherein the separating is conducted at a temperature in the range from about 250° F. to about 300° F. and a pressure of less than 40 psig.7. The process of claim 6 , wherein the separating is conducted at a temperature in the range from about 260° F. to about 290° F. and a pressure in the range from about 20 psig to about 35 psig.8. The process of any of - claim 6 , wherein mixing gas with the liquid sulfur mixture comprises:introducing the gas into a suction of a sulfur transfer ...

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Номер записи: 27
17-01-2019 дата публикации

ENHANCEMENT OF CLAUS TAIL GAS TREATMENT BY SULFUR DIOXIDE-SELECTIVE MEMBRANE TECHNOLOGY AND SULFUR DIOXIDE-SELECTIVE ABSORPTION TECHNOLOGY

Номер: US20190016598A1
Автор: "OCONNELL John P.", Ballaguet Jean-Pierre R., CHARRY-PRADA Iran D., Duval Sebastien A., HAMAD Feras, Othman Rashid M., Vaidya Milind M.
Принадлежит: Saudi Arabian Oil Company

A method for recovering sulfur from an acid gas feed is provided. The method comprising the steps of mixing the acid gas feed and an absorption process outlet stream to form a combined Claus feed, introducing the combined Claus feed and a sulfur dioxide enriched air feed to a Claus process to produce a Claus outlet gas stream, introducing the Claus outlet gas stream to a thermal oxidizer, treating the thermal oxidizer outlet stream in a gas treatment unit to produce a dehydrated stream, introducing the dehydrated stream to a membrane sweeping unit to produce a sweep membrane residue stream and a sulfur dioxide enriched air feed, introducing a sweep air stream to a permeate side of the membrane sweeping unit, and introducing the sweep membrane residue stream to a sulfur dioxide absorption process to produce the absorption process outlet stream and a stack feed. 1. A system for recovering sulfur from an acid gas feed , the system comprising:a Claus process, the Claus process configured to convert a combined Claus feed to produce a Claus outlet gas stream and a recovered sulfur stream, wherein the combined Claus feed comprises the acid gas feed and an absorption process outlet stream, wherein the acid gas feed comprises hydrogen sulfide such that the acid gas feed has a hydrogen sulfide concentration, wherein the absorption process outlet stream comprises sulfur dioxide, wherein the Claus outlet gas stream comprises sulfur-containing compounds, hydrogen sulfide, and sulfur dioxide; wherein the recovered sulfur stream comprises elemental sulfur,a thermal oxidizer fluidly connected to the Claus process, the thermal oxidizer configured to convert sulfur-containing compounds and hydrogen sulfide in the Claus outlet gas stream to sulfur dioxide to produce a thermal oxidizer outlet stream, wherein the thermal oxidizer outlet stream comprises the sulfur dioxide and water vapor;a gas treatment unit fluidly connected to the thermal oxidizer, the thermal oxidizer configured to ...

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Номер записи: 28
26-01-2017 дата публикации

Sour Pressure Swing Adsorption Process

Номер: US20170021301A1
Автор: Andrew David Wright, Edward Landis Weist, Jr., Fabrice Amy, Jeffrey Raymond Hufton, Jeffrey William Kloosterman, Shubhra Jyoti Bhadra
Принадлежит: Air Products and Chemicals Inc

Methods and apparatuses for separating CO 2 and sulfur-containing compounds from a synthesis gas obtained from gasification of a carbonaceous feedstock. The primary separating steps are performed using a sour pressure swing adsorption (SPSA) system, followed by an acid gas enrichment system and a sulfur removal unit. The SPSA system includes multiple pressure equalization steps and a rinse step using a rinse gas that is supplied from a source other than directly from one of the adsorber beds of the SPSA system.

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Номер записи: 29
23-01-2020 дата публикации

Acid gas treatment

Номер: US20200023310A1
Автор: Jing Luo, Lifang Qi
Принадлежит: Jiangnan Environmental Protection Group Inc, Jiangsu New Century Jiangnan Environmental Protection Inc Ltd

Apparatus and methods for treating acid gas, which utilizes multi-stage absorption cycle of ammonia desulfurization to treat acid tail gas after pre-treatment of the acid gas, thereby achieving the purpose of efficient and low-cost treatment of acid tail gas. The parameters of the acid tail gas may be adjusted by a regulatory system such that the enthalpy value of the acid tail gas is in the range of 60-850 kJ/kg dry gas, for example, 80-680 kJ/kg dry gas or 100-450 kJ/kg dry gas, to meet the requirements of ammonia desulfurization, and achieve the synergy between the acid gas pre-treatment and ammonia desulfurization. Furthermore, hydrogen sulfide may be converted into sulfur/sulfuric acid plus ammonium sulfate at an adjustable ratio.

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Номер записи: 30
04-02-2021 дата публикации

HELIUM RECOVERY FROM GASEOUS STREAMS

Номер: US20210031139A1
Автор: Abang Taib, Duval Sebastien A., HAMAD Feras, Rithauddeen Megat A., Vaidya Milind
Принадлежит: Saudi Arabian Oil Company

Recovering helium from a gaseous stream includes contacting an acid gas removal membrane with a gaseous stream to yield a permeate stream and a residual stream, removing a majority of the acid gas from the residual stream to yield a first acid gas stream and a helium depleted clean gas stream, removing a majority of the acid gas from the permeate stream to yield a second acid gas stream and a helium rich stream, and removing helium from the helium rich stream to yield a helium product stream and a helium depleted stream. A helium removal system for removing helium from a gaseous stream including hydrocarbon gas, acid gas, and helium includes a first processing zone including a first acid gas removal unit, a second processing zone including a second acid gas removal unit, a third processing zone, and a helium purification unit. 1. A helium recovery method comprising:contacting an acid gas removal membrane with a gaseous stream comprising hydrocarbon gas, acid gas, and helium, thereby separating the gaseous stream into a permeate stream and a residual stream, each comprising a portion of the hydrocarbon gas, a portion of the acid gas, and a portion of the helium, wherein concentration of the helium in the permeate stream is greater than concentration of the helium in the residual stream, and wherein concentration of the acid gas in the permeate stream is greater than concentration of the acid gas in the residual stream;removing a majority of the acid gas from the residual stream to yield a first acid gas stream and a helium depleted clean gas stream, wherein concentration of acid gas in the first acid gas stream is greater than concentration of acid gas in the helium depleted clean gas stream; andremoving a majority of the acid gas from the permeate stream to yield a second acid gas stream and a helium rich stream, wherein concentration of acid gas in the second acid gas stream is greater than concentration of acid gas in the helium rich stream.2. The method of claim ...

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Номер записи: 31
04-02-2021 дата публикации

PROCESS FOR THE PRODUCTION OF MICRONIZED SULFUR

Номер: US20210032104A1
Автор: KAY William Chee, LAIDLER James Kenneth, MACKINNON Murray, PATEL Navindra
Принадлежит:

The present document describes a method of producing sulfur particles by injecting an unbroken stream of molten sulfur under a pulsation free pressure, from a distance, into tempered water moving at a velocity, to produce a physical reaction of said molten sulfur with said tempered water to produce sulfur particles. Also described are sulfur particles produced by the process and methods of using the same for fertilizing soil. 1. A method of producing sulfur particles , comprising the step of: injecting an unbroken stream of a molten sulfur under a pulsation free pressure of from about 3447.38 kPa to about 20684.27 kPa , from a distance of about 30 to about 101 mm , into a tempered water moving at velocity , to produce a physical reaction of said molten sulfur with said tempered water to produce sulfur particles.2. The method of claim 1 , wherein said pulsation free pressure is from a pump having reduced pulsations compared to a pump having a single claim 1 , or dual high pressure hydraulic cylinder.3. The method of claim 1 , wherein said molten sulfur is degassed molten sulfur.4. The method of any claim 1 , wherein said pulsation free pressure is provided with a pump having 3 or more hydraulic cylinders.5. The method of any one of - claim 1 , wherein said distance is from about 30 to about 76 mm or about 33 to about 76 mm.67.-. (canceled)8. The method of claim 1 , wherein said molten sulfur is heated to a temperature of about 140° C. to about 159° C. or from about 150° C. to about 155° C.9. (canceled)10. The method of claim 1 , wherein said tempered water is heated to a temperature of about 15° C. to about 98° C. or about 50° C. to about 98° C. or about 94° C. to about 98° C.1112.-. (canceled)13. The method of claim 1 , wherein said tempered water is moving at velocity sufficient to produce a vortex.14. The method of claim 1 , wherein said tempered water is moving at velocity of at least 0.5 meter per second.15. The method of claim 1 , wherein said tempered water ...

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Номер записи: 32
24-02-2022 дата публикации

METHOD FOR PRODUCING SULFUR FROM PHOSPHOGYPSUM

Номер: US20220055898A1
Автор: Alami Hamedane Younes, HANNACHE Hassan, Manoun Bouchaib, Oumam Mina, Tamraoui Youssef
Принадлежит:

The objective of the invention is the development of a new process for producing sulfur from phosphogypsum. During this process, the phosphogypsum is mixed with a source of carbon and hydrogen forming a slurry after mixing. This source of carbon and hydrogen is a natural or synthetic organic polymer, as an example that is not limiting, biomass, used tires or plastic, kerogen or tars. The granules undergo a heat treatment (100 to 150° C.) to evaporate the mixing water. 1. A process for preparing elemental sulfur from phosphogypsum , characterized in that the process is carried out in four stages described below:Step 1: making a mixture of phosphogypsum and a source of carbon and hydrogen;Step 2: heat treatment of the mixture obtained at a temperature ranging from 80° C. to 150° C. to form an organic sulfatepolymer composite;Step 3: heat treatment of the organic sulfatepolymer composite in an inert or partially inert atmosphere at a temperature ranging from 550° C. to 900° C.;{'b': '4', 'Step : recovery of elemental or combined sulfur.'}2. The process according to claim 1 , characterized in that the carbon source is chosen from synthetic or natural organic polymers claim 1 , plant biomass claim 1 , fossil resources such as heavy hydrocarbons claim 1 , oil shales claim 1 , or any residual organic matter.3. The process according to claim 1 , characterized in that the heat treatment of the organic sulfate polymer composite is preferably carried out at a temperature below 750° C.4. The process according to claim 1 , characterized in that the heat treatment of the organic sulphate polymer composite produces organo-sulphur compounds claim 1 , sulfur and gaseous hydrogen sulphide from 550° C. accompanied by water vapor and carbon dioxide.5. The process according to claim 4 , characterized in that the gas formed is condensed in solid form claim 4 , by precipitation claim 4 , in the form of elemental or combined sulfur.6. The process according to claim 4 , characterized in ...

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Номер записи: 33
06-02-2020 дата публикации

CONTACTOR APPARATUS AND METHOD OF USE

Номер: US20200039824A1
Автор: Forbes Brandon W., Willingham Thomas C.
Принадлежит: CONTROLS SOUTHEAST, INC.

Embodiments of the invention are directed to a contactor apparatus for degassing liquid sulfur, in order to separate the liquid sulfur from the process vapors. As such, the liquid sulfur is at least partially degassed to reduce off-gassing of dangerous gases during storage and transportation without the need for additional equipment to degas the liquid sulfur during or after storage. The contactor apparatus may receive liquid sulfur and degassing gas, which are passed through a catalyst zone, which along with the degassing gas degasses the liquid sulfur. The contactor apparatus is structured such that a catalyst within the catalyst zone is constrained within and prevented from flowing out, while still allowing the flow of liquid sulfur and degassing gas. 1. A contactor apparatus for degassing liquid sulfur , the apparatus comprising:a housing comprising a liquid sulfur inlet, a liquid sulfur outlet, a degassing gas inlet, and a degassing gas outlet; a sparge assembly operatively coupled to the degassing gas inlet; and', a sulfur inlet control assembly operatively coupled to the liquid sulfur inlet; and', 'a sulfur outlet control assembly operatively coupled to the liquid sulfur outlet; and, 'a sulfur control assembly comprising, 'wherein the sparge assembly and the sulfur control assembly form a catalyst zone for degassing the liquid sulfur;, 'a degassing assembly located within the housing, the degassing assembly comprisingwherein liquid sulfur received at the liquid sulfur inlet is passed through the sulfur inlet control assembly and passed into the catalyst zone in a generally horizontal direction, and the liquid sulfur exits the catalyst zone through the sulfur outlet control assembly and exits the housing at the liquid sulfur outlet; andwherein the housing receives degassing gas at the degassing gas inlet, the degassing gas is passed through the catalyst zone in a generally vertical direction, and the degassing gas exits the housing at the degassing gas outlet. ...

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Номер записи: 34
06-02-2020 дата публикации

“ENRICH-SMAX” - INTEGRATED H2S REMOVAL, SEPARATION OF IMPURITIES AND PARTIAL ACID GAS ENRICHMENT IN SOUR GAS PROCESSING

Номер: US20200039825A1
Автор: Rameshni Mahin, Santo Stephenl
Принадлежит:

This disclosure relates generally to processes sour gas treating for H2S Removal, separation of impurities such as hydrocarbons, BTEX and mercaptans and the Partial Acid Gas Enrichment integrated system from the sour gas field developments, or any application. The combination of innovation schemes comprises one or more absorbers, primary and secondary regenerators. The secondary regenerator functions are, enriching the H2S stream further and to separate the hydrocarbons, mercaptans and BTEX where an additional acid gas enrichment and hydrocarbons removal could be eliminated. Then there is a unique sulfur recovery and tail gas treating with a unique 2-zone reaction furnace, tail gas absorber which operated as partial acid gas enrichment by receiving split acid gas from the SRU and the hydrolysis reactor to hydrolyze sulfur compounds. 1. “Enrich SMAX” is defined as a process of integrated H2S removal , separation of impurities and partial acid gas enrichment in sour gas processing wherein the process comprising the unique design for combination of 3 operating units , the amine (refers to A , B , C) , and sulfur recovery (refers to D , E) and tail gas treating units (refers to F , G) respectively.(A) The Amine Unit consists of one or more absorbers, with primary and secondary regeneration system and by using generic or formulated selective commercial solvent in a form of chemical, physical, hybrid or combinations, by contacting sour gas with the lean solvent in the absorber (s) to produce treated gas and rich solvent containing H2S and hydrocarbons and mercaptans;(B) Processing rich solvent in secondary amine regenerator to separate H2S, hydrocarbons, mercaptans and BTEX from rich solvent as enriched acid gas stream and recycling portion of the hot acid gas from primary amine regenerator to secondary amine regeneration for further H2S acid gas enrichment;(C) Processing heated rich solvent from the secondary amine regeneration in the primary amine regenerator to remove ...

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Номер записи: 35
18-02-2016 дата публикации

NEW AND IMPROVED SYSTEM FOR PROCESSING VARIOUS CHEMICALS AND MATERIALS

Номер: US20160045841A1
Автор: BRADLEY Randall, KAPLAN Allen
Принадлежит: Transtar Group, Ltd.

Eco-friendly systems, methods and processes/processing (EFSMP) or an integrated Matrix encompasses stand-alone and/or interconnected modules for completely self-sustained, closed-loop, emission-free processing of multiple source feedstock that can include pretreatment, with poisoning materials isolated during pretreatment being further recycled to provide useful materials such as, for example, separated metals, carbon and fullerenes for production of nano materials, sulfur, water, sulfuric acid, gas, heat and carbon dioxide for energy production, and production of refined petroleum, at a highly-reduced cost over the best state-of-the-art refining methods/systems that meets new emissions standards as well as optimizes production output with new ultra-speed cycle times. By-products from the petroleum refining process which were previously discarded also now are recycled as renewable sources of energy (water, waste oil and rubber/coal derived pyrolyic (pyrolysis) oil, carbon gases and process gases), or recyclable resources, such as metals and precious metals, oxides, minerals, etc., can be obtained. 1. A system comprising one or more matrix modules wherein the matrix modules are each configured to function together to achieve processing , separation and recovery , reforming , recycling and manufacturing and producing products , energy and feedstocks the system comprising modules adapted for receiving storage and routing of raw materials; modules adapted for processing; modules adapted for separation and recovery; modules adapted for reforming; and modules adapted for recycling and manufacturing and producing products , energy and saleable feedstocks.2. A system according to claim 1 , comprising an oil refinery module and one or more recycling and/or manufacturing modules wherein the matrix system is adapted to produce volume refined oil at a cost less than a prior art refinery.3. The matrix system of claim 1 , wherein the one or more modules include: a power ...

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Номер записи: 36
18-02-2016 дата публикации

Sulfur Trap

Номер: US20160045852A1
Автор: Strom W. Smith
Принадлежит: Individual

A sulfur trap provides separation of elemental molten sulfur from a process stream comprising a mixture of sulfur and associated tail-gases. The sulfur trap comprises a vertically-oriented cylindrical wall having a chamber for receiving the process stream, a float positioned in the chamber, the float attached to a float end of a lever, a nozzle insert attached to the distal end of the lever, and a lever fulcrum positioned intermediate the lever float end and the lever nozzle insert end. The float, lever, nozzle insert and outlet are constructed to allow the float position to control nozzle insert engagement of the outlet, particularly to close the outlet when the float is elevated by molten sulfur and to disengage from the outlet to allow discharge flow of liquid sulfur at a determined level of sulfur within the chamber. Embodiments of a method of separating liquid sulfur from gases are also provided.

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Номер записи: 37
16-02-2017 дата публикации

HIGH TEMPERATURE DRY DESULFURIZATION SYSTEM AND METHOD USING MULTI REGENERATION RECTOR

Номер: US20170044014A1
Автор: BAE Dal-Hee, BAEK Jeom In, Jin Gyoung-tae, JO Sung-Ho, LEE Dong-Ho, LEE Hyo Jin, LEE Seung-Yong, MOON Jong-Ho, Park Jae-hyeon, PARK Young Cheol, RYU Ho-Jung, Shun Do-won, YI Chang-Keun
Принадлежит:

A desulfurization system removes sulfur ingredients included synthetic gas generated from gasification of coal in a high temperature dry state. The system includes a desulfurization reactor, a desulfurization cyclone, and first and second regeneration reactors branched in the desulfurization cyclone. A first oxidizing agent is injected to a first oxidizing agent inlet of the first regeneration reactor, and a second oxidizing agent is injected to a second oxidizing agent inlet of the second regeneration reactor. A controller operates one of the first and second regeneration reactors in a regeneration mode, controlling the other to operate in a desulfurization mode. 1. A desulfurization system removing sulfur ingredients included synthetic gas generated from gasification of coal in a high temperature dry state , comprising:a desulfurization reactor removing sulfur ingredients of the synthetic gas by desulfurizing agent;a desulfurization cyclone discharging by separating synthetic gas removed sulfur ingredients discharged in the desulfurization reactor and desulfurizing agent absorbed sulfur ingredients;at least one of a first regeneration reactor branched in the desulfurization cyclone and regenerates the desulfurizing agent absorbed the sulfur ingredients by flowing the desulfurizing agent absorbed the discharged sulfur ingredients;at least one of a second regeneration reactor branched in the desulfurization cyclone and regenerates the desulfurizing agent absorbed the sulfur ingredients by flowing the desulfurizing agent absorbed discharged sulfur ingredients;a first oxidizing agent supplying means injecting oxidizing agent to a first oxidizing agent inlet of the first regeneration reactor, and a second oxidizing agent supplying means injecting oxidizing agent to a second oxidizing agent inlet of the second regeneration reactor;a first inlet valve provided at a side of a first regeneration reactor inlet pipe connecting between the desulfurization cyclone and a first ...

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Номер записи: 38
16-02-2017 дата публикации

SUPERSULF- A PROCESS WITH INTERNAL COOLING AND HEATING REACTORS IN SUBDEWPOINT SULFUR RECOVERY AND TAIL GAS TREATING SYSTEMS

Номер: US20170044015A1
Автор: Rameshni Mahin, Santo Stephen L.
Принадлежит:

SuperSulf process refers to an innovative reactor design consisting of internal cooling and heating thermoplate exchangers where it is filled by the Claus type catalysts between plates in the SRU and hydrogenation catalysts in the tail gas unit. SuperSulf reactor consists of 3 reactor zones in the sulfur recovery which operates as a SubDewPoint process where the mode of operation are controlled by switching valves on the utilities streams high pressure steam and high quality water and steam where the first 2 zones operate as hot and cold and switches to cold and hot where the produced sulfur is condensed. The third zone operates as cold all the time where consists of the last sulfur condenser by producing Low pressure steam. The tail gas unit consists of 2 reactor zones of hydrogenation reactor and hydrolysis reactor with internal plate cooling then followed by the tail gas amine with a selective solvent. The thermal incineration system can meet less than 50 ppmv of SO2 and with caustic incineration less than 10 ppmv of SO2 resulting zero emission. 1. A process for the production of sulfur from sulfur compounds-containing acid gases streams , the process comprising the following 7 steps:A—step 1) The process comprises a thermal stage (s) (reaction furnace stages) of the Claus Unit with air, enriched air or oxygen enrichment operation;B—step 2) The process comprises at least one catalytic stage containing Titanium catalyst to hydrolyze sulfur byproducts from the thermal stage and the Claus catalysts to perform the Claus reaction;C—step 3) The SuperSulf process comprises 3 reactor zones equipped with internal heating and internal cooling thermoplate exchangers and filled by the Claus catalysts between plates and these zones operate as a SubDewPoint process to achieve higher recovery where zone 1 and 2 mode of operation switches between hot and cold at least once a day;D—step 4) The process comprises motor operating switching valves to control these reactor zones for ...

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Номер записи: 39
06-02-2020 дата публикации

STABLE ELECTROLYTE MATERIAL AND SOLVENT MATERIAL CONTAINING SAME

Номер: US20200043669A1
Автор: Adloff Lawrence, Carlson Lawrence, Hoel Timothy, Wurzburger Steven
Принадлежит:

A composition of matter having the following chemical structure: 2. The composition of matter of wherein x is an integer between 3 and 11 and y is an integer between 1 and 10.3. The composition of matter of wherein the polyatomic ion has a charge of −2 or greater.4. The composition of matter of wherein Z is selected from the group consisting of sulfate claim 3 , carbonate claim 3 , phosphate claim 3 , oxalate claim 3 , chromate claim 3 , dichromate claim 3 , pyrophosphate and mixtures thereof.5. The composition of matter of composed of a stoichiometrically balanced chemical composition of at least one of the following: hydrogen (1+) claim 1 , triaqua-μ3-oxotri sulfate (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri carbonate (1:1) claim 1 , hydrogen (1+) claim 1 , triaqua-μ3-oxotri phosphate claim 1 , (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri oxalate (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri chromate (1:1) hydrogen (1+) claim 1 , triaqua-μ3-oxotri dichromate (1:1) claim 1 , hydrogen (1+) claim 1 , triaqua-μ3-oxotri pyrophosphate (1:1) claim 1 , and mixtures thereof.7. The composition of matter of wherein x is an integer between 3 and 11 and y is an integer between 1 and 10.8. The composition of matter of wherein the polyatomic ion has a charge of −2 or greater.9. The composition of matter of wherein Z is selected from the group consisting of sulfate claim 8 , carbonate claim 8 , phosphate claim 8 , oxalate claim 8 , chromate claim 8 , dichromate claim 8 , pyrophosphate and mixtures thereof.10. The composition of matter of composed of a stiochiometrically balanced chemical composition of at least one of the following: hydrogen (1+) claim 6 , triaqua-μ3-oxotri sulfate (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri carbonate (1:1) claim 6 , hydrogen (1+) claim 6 , triaqua-μ3-oxotri phosphate claim 6 , (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri oxalate (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri chromate (1:1) hydrogen (1+) claim 6 , triaqua ...

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Номер записи: 40
06-02-2020 дата публикации

STABLE ELECTROLYTE MATERIAL AND SOLVENT MATERIAL CONTAINING SAME

Номер: US20200043670A1
Автор: Adloff Lawrence, Carlson Lawrence, Hoel Timothy, Wurzburger Steven
Принадлежит:

A composition of matter having the following chemical structure: 2. The composition of matter of wherein x is an integer between 3 and 11 and y is an integer between 1 and 10.3. The composition of matter of wherein the polyatomic ion has a charge of −2 or greater.4. The composition of matter of wherein Z is selected from the group consisting of sulfate claim 3 , carbonate claim 3 , phosphate claim 3 , oxalate claim 3 , chromate claim 3 , dichromate claim 3 , pyrophosphate and mixtures thereof.5. The composition of matter of composed of a stoichiometrically balanced chemical composition of at least one of the following: hydrogen (1+) claim 1 , triaqua-μ3-oxotri sulfate (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri carbonate (1:1) claim 1 , hydrogen (1+) claim 1 , triaqua-μ3-oxotri phosphate claim 1 , (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri oxalate (1:1); hydrogen (1+) claim 1 , triaqua-μ3-oxotri chromate (1:1) hydrogen (1+) claim 1 , triaqua-μ3-oxotri dichromate (1:1) claim 1 , hydrogen (1+) claim 1 , triaqua-μ3-oxotri pyrophosphate (1:1) claim 1 , and mixtures thereof.7. The composition of matter of wherein x is an integer between 3 and 11 and y is an integer between 1 and 10.8. The composition of matter of wherein the polyatomic ion has a charge of −2 or greater.9. The composition of matter of wherein Z is selected from the group consisting of sulfate claim 8 , carbonate claim 8 , phosphate claim 8 , oxalate claim 8 , chromate claim 8 , dichromate claim 8 , pyrophosphate and mixtures thereof.10. The composition of matter of composed of a stiochiometrically balanced chemical composition of at least one of the following: hydrogen (1+) claim 6 , triaqua-μ3-oxotri sulfate (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri carbonate (1:1) claim 6 , hydrogen (1+) claim 6 , triaqua-μ3-oxotri phosphate claim 6 , (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri oxalate (1:1); hydrogen (1+) claim 6 , triaqua-μ3-oxotri chromate (1:1) hydrogen (1+) claim 6 , triaqua ...

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Номер записи: 41
03-03-2022 дата публикации

Membrane process for h2 recovery from sulfur recovery tail gas stream of sulfur recovery units and process for environmentally greener sales gas

Номер: US20220062818A1
Автор: Ahmad BAHAMDAN, Ahmed Al-Talib, Feras Hamad, Milind Vaidya, Sebastien Andre Duval, Seung-hak Choi
Принадлежит: Saudi Arabian Oil Co

Methods and systems are provided for treating the tail gas stream of a sulfur recovery plant. The methods including generating a tail gas stream from a sulfur recovery plant, treating the tail gas stream with a hydrogen sulfide removal unit and a hydrogen selective membrane unit, generating a stream low in hydrogen sulfide and a stream rich in hydrogen. The hydrogen sulfide rich stream is recycled to the sulfur recovery unit. The hydrogen selective membrane unit includes a glassy polymer membrane selective for hydrogen over hydrogen sulfide and carbon dioxide.

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Номер записи: 42
14-02-2019 дата публикации

METHOD FOR TREATING SULFIDES IN WASTE STREAMS

Номер: US20190047886A1
Автор: Archer, III William Moseley
Принадлежит:

A method for treating sulfide in an aqueous fluid comprises contacting the fluid with an oxidizer in the presence of a sulfur dye or sulfurized vat dye. In one embodiment, the method comprises treating sulfide contaminated water by contacting the contaminated water with air in the presence of a sulfur dye or a sulfurized vat dye. The method is useful for remediating industrial, agricultural, and municipal waste water. 116.-. (canceled)17. A method of producing at least one thiosulfate salt , said method comprising:contacting an aqueous fluid comprising bisulfide ions with oxygen or an oxygen-containing gas in the presence of at least one sulfur dye or sulfurized vat dye to produce an aqueous fluid comprising soluble thiosulfate salt(s); andseparating the soluble thiosulfate salt(s) from the at least one sulfur dye or sulfurized vat dye in the aqueous fluid.18. The method of claim 17 , further comprising absorbing hydrogen sulfide into an aqueous fluid comprising an alkali to convert the absorbed hydrogen sulfide to bisulfide ions.19. The method of claim 17 , wherein said aqueous fluid is selected from one of oil processing or gas processing.20. The method of claim 19 , wherein said aqueous fluid comprises waste water.21. The method of claim 18 , wherein said alkali is chosen to produce the desired thiosulfate salt(s).22. The method of claim 18 , wherein the alkali is chosen from sodium hydroxide or potassium hydroxide.23. The method of claim 17 , wherein said sulfur dye or sulfurized vat dye is selected from the group consisting of Sulfur Black 1 claim 17 , Leuco Sulfur Black 1 claim 17 , Solubilized Sulfur Black 1 claim 17 , and mixtures thereof.24. The method of claim 17 , wherein said sulfur dye or sulfurized vat dye is in the Leuco (reduced) form claim 17 , the Solubilized form or mixtures thereof.25. The method of claim 18 , wherein said hydrogen sulfide is generated during at least one of natural gas processing and petroleum refining.26. The method of claim 17 ...

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Номер записи: 43
25-02-2021 дата публикации

Sulfur Recovery Within A Gas Processing System

Номер: US20210053827A1
Автор: Cullinane John Timothy, Northrop P. Scott
Принадлежит: EXXONMOBIL UPSTREAM RESEARCH COMPANY

A method for recovering sulfur within a gas processing system is described herein. The method includes contacting a natural gas stream including an acid gas with a solvent stream within a co-current contacting system to produce a sweetened natural gas stream and a rich solvent stream including an absorbed acid gas. The method also includes removing the absorbed acid gas from the rich solvent stream within a regenerator to produce a concentrated acid gas stream and a lean solvent stream. The method further includes recovering elemental sulfur from hydrogen sulfide (HS) within the concentrated acid gas stream via a sulfur recovery unit. 1. A gas processing system , comprising: contact a natural gas stream comprising an acid gas with a solvent stream to produce a sweetened natural gas stream and a rich solvent stream comprising an absorbed acid gas; and', 'send the rich solvent stream to a regenerator;, 'a co-current contacting system configured to remove the absorbed acid gas from the rich solvent stream to produce a concentrated acid gas stream and a lean solvent stream; and', 'send the concentrated acid gas stream to a sulfur recovery unit; and, 'the regenerator configured to{'sub': '2', 'the sulfur recovery unit configured to recover elemental sulfur from hydrogen sulfide (HS) within the concentrated acid gas stream.'}2. The gas processing system of claim 1 , wherein the co-current contacting system comprises: an annular support ring configured to maintain the co-current contactor within the pipe;', 'a plurality of radial blades configured to allow the solvent stream to flow into the co-current contactor; and', 'a central gas entry cone configured to allow the natural gas stream to flow through a hollow section within the co-current contactor;', 'wherein the co-current contactor provides for efficient incorporation of liquid droplets formed from the solvent stream into the natural gas stream such that the acid gas from the natural gas stream is absorbed by the ...

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Номер записи: 44
14-02-2019 дата публикации

LITHIUM ION CONDUCTIVE SULFIDE-BASED SOLID ELECTROLYTE COMPRISING INDIUM SELENIDE AND A METHOD FOR PRERARING THE SAME

Номер: US20190051932A1
Автор: CHOI Sung Jun, JUNG Eu Deum, JUNG Hun-Gi, Kim Byung Kook, KIM Hyoungchul, LEE Hae-Weon, Lee Jong Ho, SON Ji-Won, Yoon Bin Na
Принадлежит: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

The present invention relates to a lithium-ion-conductive sulfide-based solid electrolyte which contains lithium (Li), sulfur (S), phosphorus (P), indium (In) and selenium (Se) and has a crystal structure of InSe and a method for preparing the same. 1. A lithium-ion-conductive sulfide-based solid electrolyte comprising:lithium (Li);sulfur (S);phosphorus (P);indium (In); andselenium (Se).2. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 1 , which has a crystal structure of InSe.3. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 1 , which shows XRD peaks of InSe at 2θ=20-22° claim 1 , 2θ=26-28° claim 1 , 2θ=38-40° and 2θ=44-46° when subjected to X-ray diffraction (XRD) pattern measurement using Cu Kα radiation.4. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 1 , which is represented by Chemical Formula 1:{'br': None, 'sub': 2', 'a', '2', '5', 'b', '2', '3', 'c, '(LiS).(PS).(InSe)\u2003\u2003[Chemical Formula 1]'}wherein 0.5≤a≤0.8, 0.1≤b≤0.4, 0.01≤c≤0.3 and a+b+c=1.5. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 4 , wherein 0.65≤a≤0.8 claim 4 , 0.15≤b≤0.25 and 0.02≤c≤0.2.6. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 1 , which has an ion conductivity after exposure to the atmosphere of 40% or greater with respect to an ion conductivity before exposure to the atmosphere claim 1 , wherein the exposure to the atmosphere means exposure of the sulfide-based solid electrolyte to a condition of 20-25° C. and 50-70% humidity for 30 minutes to 3 hours.7. The lithium-ion-conductive sulfide-based solid electrolyte according to claim 1 , which further comprises an element selected from a group consisting of boron (B) claim 1 , carbon (C) claim 1 , nitrogen (N) claim 1 , aluminum (Al) claim 1 , silicon (Si) claim 1 , vanadium (V) claim 1 , manganese (Mn) claim 1 , iron (Fe) claim 1 , cobalt (Co) claim 1 , nickel (Ni) claim 1 ...

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Номер записи: 45
15-05-2014 дата публикации

ZERO EMISSIONS SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION

Номер: US20140134096A1
Автор: Angelini Fabio, Barbato Lucia
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Disclosed is a process for the concurrent production of hydrogen and sulphur from a HS-containing gas stream, with reduced, and preferably zero, emissions. The method comprises the catalytic oxidative cracking of HS so as to form Hand S. Preferably, the oxidation is conducted using oxygen-enriched air, preferably pure oxygen. The process is conducted in a reaction chamber comprising a bifunctional catalyst material, so as to favor both the partial oxidation of HS and the dissociation thereof. 1. A method for the production of hydrogen from a HS-containing gas stream , comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S.2. A method according to claim 1 , wherein the catalytic oxidative cracking is conducted with a molar ratio HS/Oin the feedstock higher than 2:1.3. A method according to claim 2 , wherein the ratio is 3:1-5:1.4. A method according to claim 1 , wherein the catalytic oxidative cracking is conducted under the influence of an oxygen-containing gas-stream comprising at least 40% oxygen.5. A method according to claim 4 , wherein the oxygen-containing gas-stream is oxygen having a purity of from 90%-100%.6. A method according to claim 1 , wherein the catalytic oxidative cracking is conducted under the influence of a single catalyst selected from the group consisting of Pt claim 1 , Rh claim 1 , Ru claim 1 , Ir claim 1 , Pd claim 1 , Co claim 1 , Mo claim 1 , Ni claim 1 , Fe claim 1 , W claim 1 , Cu claim 1 , Cd claim 1 , the corresponding sulphides claim 1 , the corresponding oxides claim 1 , and combinations of the foregoing.7. A method according to claim 1 , wherein the catalytic oxidative cracking is conducted under the influence of an oxidation catalyst and a separate cracking catalyst.8. A method according to claim 7 , wherein the oxidation catalyst is selected from the group consisting of one or more active components selected from Group VIII metals and the cracking catalyst is selected from the group consisting of ...

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Номер записи: 46
28-02-2019 дата публикации

Degassing System and Tower for Sulfur Process

Номер: US20190060793A1
Автор: Smith Strom W.
Принадлежит:

Embodiments of a degassing system of the present invention generally include a degassing device having a sintered metal matrix component; and a process vessel having a liquid inlet and liquid outlet through which liquid flows providing a liquid level there within; wherein the degassing device, which is fluidly connected to a pressurized gas source, is disposed within the process vessel beneath the surface of the liquid, wherein pressurized gas is introduced to the degassing device and forced through the sintered metal matrix to create gas micro-bubbles which rise through the liquid to strip volatile compounds therefrom, the gaseous composition above the surface of the liquid being evacuated through the gas outlet. In one embodiment, a degassing tower having multiple degassing chambers and degassing devices is employed. In one embodiment, a metal powder is disposed within the sintered metal matrix. Embodiments of methods of using the degassing device are also provided. 1. A degassing system comprising: said degassing device is in fluidly connected to a pressurized gas source;', 'said degassing device is disposable at least partially beneath a surface of a liquid;', 'provision of pressurized gas to said degassing device produces gas bubbles within at least one said sintered metal matrix; and', 'said gas bubbles have a median diameter at least as small as about ten micrometers., 'wherein,'}, 'a degassing device which comprises at least one sintered metal matrix;'}2. The degassing system of claim 1 , wherein said gas bubbles have a median diameter of about one to about two micrometers.3. The degassing system of claim 1 , wherein at least a portion of at least one said sintered metal matrix comprises metal powder disposed there within.4. The degassing system of claim 3 , wherein said metal powder comprises stainless steel.5. A method of degassing a liquid claim 3 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'providing the degassing device of ;'} ...

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Номер записи: 47
28-02-2019 дата публикации

Process for Acid Gas Treatment and Power Generation

Номер: US20190060824A1
Автор: Harale Aadesh, Musawi Maytham, Younes Mourad
Принадлежит:

Systems and processes for treating acid gas from a sour gas stream are provided. A chemical looping combustion (CLC) process is provided that uses CaCOto capture sulfur from the acid gas and produce CaSO. An acid gas treatment unit may receive an acid gas from an acid gas removal unit and produce the CaSOand various gas and air streams for use in heat exchangers for steam production. The acid gas treatment unit may include a fuel reactor, an oxidizer reactor, and a calciner reactor. Another acid gas treatment unit may include a fuel reactor that includes the calciner function and an oxidizer reactor. A selective membrane module may be disposed between the sour gas stream and an acid gas removal unit to produce a HS and COpermeate that is mixed with the acid gas stream provided to the acid gas treatment unit. 1. A system , comprising: a fuel reactor operable to receive the acid gas stream and calcium oxide, the fuel reactor further operable to react the hydrogen sulfide with the calcium oxide to produce calcium sulfide and a first gas stream comprising water vapor and carbon dioxide;', 'an oxidizer reactor operable to receive the calcium sulfide and a first air stream, the oxidizer reactor further operable to produce calcium sulfate and an oxygen-lean second air stream, the oxygen-lean air stream comprising no more than 15% by weight oxygen: and', 'a calciner reactor operable to receive the oxygen-lean second air stream and calcium carbonate, the calciner reactor further operable to produce the calcium oxide and a second gas stream, the second gas stream comprising carbon dioxide., 'an acid gas treatment unit operable to treat an acid gas stream comprising hydrogen sulfide, the acid gas treatment unit comprising2. The system of claim 1 , comprising one or more heat exchangers operable to receive at least one of the first gas stream claim 1 , the second gas stream claim 1 , and the oxygen-lean second air stream claim 1 , the one or more heat exchangers further ...

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Номер записи: 48
17-03-2022 дата публикации

NANO-SULFUR CONTAINING COMPOSITION AND APPLICATION THEREOF

Номер: US20220081294A1
Автор: XIA Kui
Принадлежит:

A composition containing nano-sulfur and an application thereof, the composition containing nano-sulfur contains nano-sulfur and further contains an anti-agglomeration agent used for preventing or delaying the agglomeration of the nano-sulfur, is provided. The composition containing nano-sulfur may be widely used for preparing toiletries for use on the surface of the skin on humans or animals, pharmaceutical compositions treating skin disorders, pesticides, preservatives for vegetables and fruits, additives for animal feed, additives for mold prevention in paint, mold prevention agents for textiles or (textile) mite-killing agents. The composition containing nano-sulfur is easy to prepare, and the nano-sulfur may remain in the nano state for a long time, reducing or even eliminating the occurrence of the agglomeration of the nano-sulfur, while achieving the goals of being applied in various products and preventing fungus by simply adding a very small amount. 1. A preparation method of sulfur-containing product , wherein the preparation method comprises:{'claim-text': ['(a) mixing powdered nano-scale sulfur with solvent(s), anti-agglomerating agent(s), and dispersing uniformly to obtain the nano-sulfur containing composition;', '(b) reacting thiosulfate(s) or polysulfide(s) with acid(s) in a presence of the anti-agglomerating agent(s) in the solvent(s) to obtain the nano-sulfur containing composition;', '(c) preparing the nano-sulfur containing composition by a micro-emulsion method using thiosulfate(s) or polysulfide(s), and acid(s) as reaction raw materials and in a presence of the anti-agglomerating agent(s) and the solvent(s);'], '#text': '(1) providing a nano-sulfur containing composition comprising nano-sulfur, solvent(s) and anti-agglomerating agent(s) used for preventing or retarding agglomeration of the nano-sulfur by the following method (a) or (b) or (c):'}(2) mixing the nano-sulfur containing composition with other components of the sulfur-containing ...

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Номер записи: 49
27-02-2020 дата публикации

METHOD FOR PARTIAL REDUCTION OF SO2

Номер: US20200062593A1
Автор: Schreiner Bernhard, Tautz Hanno, Tian Xiaoping
Принадлежит: Messer Industries USA, Inc

The present invention relates to a method for partial reduction of SO, wherein a SOstream, an oxidant and a gaseous fuel are fed to a burner and reacted in a flame reaction. The burner comprises at least one supply opening for the SOstream, at least one supply opening for the oxidant and at least one supply opening for the gaseous fuel, and a burner head () with first injection sets () and second injection sets (). First injection sets () are arranged in a first section () of the burner head (), and second injection sets () are arranged in a second section () of the burner head (). The stoichiometric ratio of SO, fuel and oxidant supplied through the first injection sets () is different from the stoichiometric ratio of SO, fuel and oxidant supplied through the second injection sets (). 115-. (canceled)1617897841951789. A method for partial reduction of SO , wherein a SOstream , an oxidant and a gaseous fuel are fed to a burner and reacted in a flame reaction , wherein the burner comprises at least one supply opening for the SOstream , at least one supply opening for the oxidant and at least one supply opening for the gaseous fuel , and wherein the burner further comprises: a burner head () with first injection sets ( , ) and second injection sets () , the first injection sets ( , ) arranged in a first section () of the burner head () , the second injection sets () arranged in a second section () of the burner head () , and a stoichiometric ratio of SO , fuel and oxidant supplied through the first injection sets ( , ) is different from a stoichiometric ratio of SO , fuel and oxidant supplied through the second injection sets ().17789789789aaabbb. The method of claim 16 , wherein at least one of the first and/or second injection sets ( claim 16 , claim 16 , ) comprise a first port ( claim 16 , claim 16 , ) for oxidant claim 16 , and a second port ( claim 16 , claim 16 , ) for fuel and/or SO.18783029. The method of claim 16 , wherein the relative quantities of SO claim ...

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Номер записи: 50
08-03-2018 дата публикации

SETR- SUPER ENHANCED TAIL GAS RECOVERY; A TAIL GAS PROCESS WITH ADSORBENT REACTORS FOR ZERO EMISSIONS

Номер: US20180065851A1
Автор: Rameshni Mahin, Santo Stephen L.
Принадлежит:

SETR tail gas treating process refers to an innovative process consist of the adsorbent and regeneration reactors. The SETR reactor stands for Super Enhanced Tail gas Recovery switching between adsorption and regeneration mode and the STER reactors are located after the tail gas incineration before the stack replacing any type of the caustic scrubber system. The SETR innovative process is not a sub dew point process where the bed become saturated with sulfur, instead, the SETR process are fixed bed reactors that requires heat up and cool down for the SO2 adsorption-based Claus tail gas process. The adsorption mode operates at cold temperature to adsorb the SO2. The regenerator mode operates at hot temperature to regenerate the SO2 by adding a slip stream of the H2S and air from the SRU to the SETR reactor that contains adsorbed SO2 to promote the Claus reaction. In the SETR reactors H2S to react with the adsorbed SO2 in the bed with oxygen the outlet of the hot reactor is recycled to the SRU thermal or catalytic section. The gas stream from the adsorbed cold reactor flows to the stack and it is SO2 free and zero emission is achieved. 1. A tail gas treating process for recovering the sulfur compounds and recycling back to the sulfur recovery plant located after the tail gas incineration and before the stack , it is not a sub dew point process where the bed become saturated with sulfur , instead , the SETR process are fixed bed reactors that requires heat up and cool down for the SO2 adsorption-based Claus tail gas process; The SETR reactors do not use any chemical agent or solvent and do not produce any chemical or spent waste stream. The process comprising the following 7 steps:A-step 1) The process comprises two reactors as the adsorbent and regeneration reactors operates in two cycles cold and hot mode;B-step 2) The process comprises at least the Claus catalysts containing Alumina and Titanium catalysts to initiate and to perform the Claus reaction in regeneration ...

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Номер записи: 51
11-03-2021 дата публикации

Method and Device for Hydrogen Sulfide Dissociation in Electric Arc

Номер: US20210074512A1
Автор: Gutsol Alexander, Mirochnik Yuriy
Принадлежит:

Device for hydrogen sulfide plasma dissociation includes a plasma chemical reactor including an arc plasma generator that has a cathode and an anode; the anode having a working surface for contacting hydrogen sulfide plasma, wherein the working surface is made from a material that includes stainless steel, tungsten or molybdenum; the cathode having a tip for arc attachment where a cathode spot is formed, wherein the cathode tip is made from pure tungsten, pure molybdenum, a tungsten or molybdenum alloy with tungsten as a major component or a composite material in which tungsten or molybdenum is the major component; and a flow path configured to have an inlet for gaseous hydrogen sulfide for dissociation in plasma into hydrogen and sulfur, and an outlet for gaseous products of hydrogen sulfide plasma dissociation. Optionally, the alloy or composite material has up to 10% low work function elements (thorium, cerium, lanthanum, or zirconium). 1. A device for hydrogen sulfide plasma dissociation , comprising:a plasma chemical reactor including an arc plasma generator that has a cathode and an anode;the anode having a working surface for contacting hydrogen sulfide plasma, wherein the working surface is made from a material that includes stainless steel, tungsten or molybdenum;the cathode having a tip for arc attachment where a cathode spot is formed, wherein the cathode tip is made from pure tungsten, pure molybdenum, a tungsten or molybdenum alloy with tungsten or molybdenum as a major component or a composite material in which tungsten or molybdenum is the major component; anda flow path configured to have an inlet for gaseous hydrogen sulfide for dissociation in plasma into hydrogen and sulfur, and an outlet for gaseous products of hydrogen sulfide plasma dissociation.2. The device of claim 1 , wherein the alloy of the cathode has up to 10% of low work function elements.3. The device of claim 2 , wherein the low work function elements are any of thorium claim 2 , ...

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Номер записи: 52
16-03-2017 дата публикации

METHOD AND APPARATUS FOR SULFUR RECOVERY

Номер: US20170072360A1
Автор: Nasato Elmo
Принадлежит: WorleyParsons Europe Ltd.

A method for treating an acid gas stream in a sulfur recovery system is provided, the method including providing a motive fluid to an ejector, providing the acid gas stream to the ejector to obtain a mixture, the mixture comprising the motive fluid and the acid gas stream, providing the mixture to a reaction furnace, providing a combustion gas to the reaction furnace, the combustion gas comprising oxygen, and reacting the contents of the reaction furnace. An apparatus for treating an acid gas stream is also provided. 1. A sulfur recovery system comprising:a reaction furnace;a motive fluid stream for providing a motive fluid to an ejector;an acid gas stream for providing an acid gas to the ejector, the ejector connected to the reaction furnace for providing to the reaction furnace a mixture comprising the motive fluid and the acid gas; anda combustion gas supply stream connected to the reaction furnace for providing a combustion gas to the reaction furnace, the combustion gas comprising oxygen.2. The sulfur recovery system of claim 1 , wherein the acid gas comprises amine acid gas.3. The sulfur recovery system of claim 1 , wherein the acid gas comprises between 5 and 100 mole percent hydrogen sulfide.4. The sulfur recovery system of claim 1 , further comprising an oxygen stream connected to the reaction furnace for providing oxygen to the reaction furnace.5. The sulfur recovery system of claim 1 , wherein the motive fluid comprises steam.6. The sulfur recovery system of claim 1 , wherein the motive fluid comprises pressurized liquid water claim 1 , water vapor claim 1 , hydrogen sulfide claim 1 , sulfur dioxide claim 1 , carbon dioxide claim 1 , or mixtures thereof.7. The sulfur recovery system of claim 1 , further comprising a sulfur recovery block connected to the reaction furnace for receiving an effluent stream from the reaction furnace claim 1 , and a pressure control valve positioned downstream from the sulfur recovery block for controlling the operating ...

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Номер записи: 53
15-03-2018 дата публикации

Organic sulfur material and method for producing same

Номер: US20180072665A1
Автор: Hiroyuki Kageyama, Tomonari Takeuchi, Toshikatsu Kojima
Принадлежит: National Institute of Advanced Industrial Science and Technology AIST

The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm −1 , 1250 cm −1 , 1440 cm −1 , and 1900 cm −1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm −1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm −1 or 1066 cm −1 .

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Номер записи: 54
22-03-2018 дата публикации

Methods for Methane Purification

Номер: US20180078895A1
Автор: Blatnick John F., Pease John R.
Принадлежит:

Ancillary embodiments and modifications to a homogenizer unit (“PPH”), and methods of use directed to purification of biogas or other raw methane streams. The apparatus includes a homogenizer body, one or more stream inlets (for the raw methane), one or more chilled water inlets, a mixing zone where the water stream is commingled with the raw methane stream, and a venturi immediately downstream from the mixing zone such that the commingled streams are pulled into the venturi resulting in homogenization. The PPH components are insulated to maintain the chilled water of the various streams at a cooled, below ambient temperature, increasing dissolution of the contaminant gases into the chilled water, and producing a purified methane stream including little or no HS and CO. 1. A method for purifying a methane containing stream , the method comprising:introducing a raw methane stream into a mixing zone through an inlet, the raw methane stream including methane and one or more contaminants selected from the group consisting of carbon dioxide, ammonia, hydrogen sulfide and combinations thereof;introducing a water stream into the mixing zone through a separate water inlet such that the water stream is commingled with the raw methane stream upon both streams entering the mixing zone;passing the commingled streams through a venturi so as to homogenize the streams such that one or more contaminants within the raw methane stream are dispersed within the water stream, forming a contaminant isolation stream including the one or more contaminants and a purified methane stream;wherein the water stream is chilled to below ambient temperature to increase dissolution of the one or more contaminants therein.2. A method as recited in claim 1 , wherein the raw methane stream includes carbon dioxide claim 1 , the carbon dioxide dissolving into the chilled water stream claim 1 , so as to remove the carbon dioxide from the raw methane stream claim 1 , the method further comprising capturing ...

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Номер записи: 55
23-03-2017 дата публикации

Systems And Methods For Separating Hydrogen Sulfide From Carbon Dioxide In A High-Pressure Mixed Stream

Номер: US20170080385A1
Автор: P. Scott Northrop
Принадлежит: Individual

Systems and methods for separating hydrogen sulfide from carbon dioxide in a high-pressure mixed stream are disclosed herein. The methods include receiving the high-pressure mixed stream in an oxidation reactor and at an inlet pressure of at least 0.3 megapascals. The high-pressure mixed stream includes 0.01 to 5 mole percent hydrogen sulfide and at least 90 mole percent carbon dioxide. The methods further include oxidizing the high-pressure mixed stream with an oxidant to generate a high-pressure oxidized stream, includes oxidized hydrogen sulfide and carbon dioxide, at an oxidation pressure of at least 0.3 megapascals. The methods also include separating the high-pressure oxidized stream into an oxidized hydrogen sulfide product and a carbon dioxide product and generating the carbon dioxide product at a pressure of at least 0.3 megapascals. The systems include the high-pressure mixed stream, an oxidation reactor, and a separation assembly.

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Номер записи: 56
23-03-2017 дата публикации

ACTIVATED METAL LOW TEMPERATURE REACTION PROCESSES AND PRODUCTS

Номер: US20170080405A1
Автор: Cuomo Jerome J.
Принадлежит: North Carolina State University

In a method for capturing carbon, sulfur, and/or nitrogen from a target source, a matrix including activated metal dispersed in a metal activating agent is provided. The target source may be or include a carbon, sulfur, and/or nitrogen target compound. The target source is contacted with the matrix, wherein the activated metal reacts with the target source to produce elemental carbon, elemental sulfur, elemental nitrogen, and/or one or more compounds transformed from the target compound(s). The matrix may be produced by contacting a metal with the metal activating agent, and maintaining contact between the metal and the metal activating agent for a period of time sufficient for metal atoms from the solid metal to disperse in the metal activating agent. The reaction may also produce a metal compound. The activated metal may also be utilized in alkylation and other synthesis processes. 1. A method for capturing a target element from a target source , the method comprising:providing a matrix comprising an activated metal dispersed in a metal activating agent; andcontacting the target source with the matrix, wherein:the target element is selected from the group consisting of carbon, sulfur, nitrogen, and a combination of two or more of the foregoing;the target source comprises a compound selected from the group consisting of a target carbon compound, a target sulfur compound, a target nitrogen compound, and a combination of two or more of the foregoing; andthe activated metal reacts with the target source to produce a product selected from the group consisting of elemental carbon, elemental sulfur, elemental nitrogen, a transformed carbon compound transformed from the target carbon compound, a transformed sulfur compound transformed from the target sulfur compound, a transformed nitrogen compound transformed from the target nitrogen compound, and a combination of two or more of the foregoing.2. The method of claim 1 , wherein the activated metal reacts with the target ...

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Номер записи: 57
12-03-2020 дата публикации

METHOD FOR TREATING SULFIDES IN WASTE STREAMS

Номер: US20200079666A1
Автор: Archer, III William Moseley
Принадлежит:

A method for treating sulfide in an aqueous fluid comprises contacting the fluid with an oxidizer in the presence of a sulfur dye or sulfurized vat dye. In one embodiment, the method comprises treating sulfide contaminated water by contacting the contaminated water with a gas including oxygen in the presence of a sulfur dye or a sulfurized vat dye. The method is useful for remediating industrial, agricultural, and municipal wastewater. 1. A method of selectively oxidizing at least one sulfide in waste water , wherein the sulfide(s) are present in the waste water as a result of degradation of biologically degradable constituents by bacteria during anaerobic treatment , said method comprising:removing the wastewater from an anaerobic or facultative treatment unit to a treatment container;adding at least one sulfur dye or sulfurized vat dye catalyst to the wastewater to form a mixture;aerating the mixture with a gas comprising oxygen to oxidize the sulfide(s) to yield treated water, wherein the treated water has a reduced concentration of sulfide(s) relative to the wastewater; andreturning the treated water to the anaerobic or facultative treatment unit.2. The method of claim 1 , wherein the at least one sulfide is selected from the group consisting of hydrogen sulfide claim 1 , bisulfide ions claim 1 , sulfide ions claim 1 , polysulfide ions and mixtures thereof.3. The method of claim 1 , wherein said sulfur dye is selected from the group consisting of Sulfur Black 1 claim 1 , Leuco Sulfur Black 1 claim 1 , Solubilized Sulfur Black 1 claim 1 , and mixtures thereof.4. The method of claim 1 , wherein said sulfur dye or sulfurized vat dye is introduced into the wastewater as the Leuco (reduced) form of the dye.5. The method of claim 1 , wherein the at least one sulfide comprises hydrogen sulfide.6. The method of claim 1 , wherein the pH of the mixture is greater than or equal to 7.7. The method of claim 6 , wherein the pH is maintained by adding at least one base ...

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Номер записи: 58
25-03-2021 дата публикации

Removal of Acid Gases From A Gas Stream, With O2 Enrichment For Acid Gas Capture and Sequestration

Номер: US20210086131A1
Автор: AIKINS Tye R., Northrop P. Scott
Принадлежит:

A method and apparatus for processing a hydrocarbon gas stream including sulfurous components and carbon dioxide. The hydrocarbon gas stream is separated into a sweetened gas stream and an acid gas stream. The acid gas stream and an air stream, enriched with oxygen such that the air stream comprises between 22% and 100% oxygen, are combusted in a sulfur recovery unit to separate the acid gas stream into a liquid stream of elemental sulfur and a tail gas stream comprising acid gas impurities. The tail gas stream and an air flow are sub-stoichiometrically combusted to produce an outlet stream comprising hydrogen sulfide and carbon monoxide. The outlet stream is hydrogenated to convert sulfur species to a gaseous catalytic output stream comprising hydrogen sulfide. Water is removed from the gaseous catalytic output stream to produce a partially-dehydrated acid gas stream, which is pressurized and injected into a subsurface reservoir. 1. A gas processing facility for processing a hydrocarbon gas stream including sulfurous components and carbon dioxide , the gas processing facility comprising: a sweetened gas stream and', 'an acid gas stream comprised primarily of hydrogen sulfide and carbon dioxide;, 'an acid gas removal facility for separating the hydrocarbon gas stream into'} a liquid stream of elemental sulfur, and', 'a tail gas stream comprising acid gas impurities; and, 'a Claus sulfur recovery unit (SRU) that receives the acid gas stream and an air stream, the air stream being enriched with oxygen such that the air stream comprises between 22% and 100% oxygen, the SRU combusting the acid gas stream and the atmospheric air to thereby separate the acid gas stream into'} [{'sub': '2', 'a reducing gas generator (RGG) that combusts fuel gas and the tail gas stream with an air flow, the RGG sub-stoichiometrically combusting the fuel gas and tail gas stream with the air flow to produce an RGG outlet stream comprising hydrogen sulfide (HS) and carbon monoxide;'}, {'sub': ...

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Номер записи: 59
30-03-2017 дата публикации

SUPERDEGAS- A PROCESS OF INTEGRATING SULFUR COLLECTION AND DEGASSING FOR ZERO EMISSION

Номер: US20170088421A1
Автор: Rameshni Mahin, Santo Stephen L.
Принадлежит:

SuperDegas process refers to innovative process of the liquid sulfur collection and degassing which takes place in the underground container in a concrete pit or a carbon steel vessel located in the concrete pit. SuperDegas process consists of at least three compartments: (1) sulfur collection to agitate and create turbulent, higher velocity, and higher pressure in the liquid sulfur for more effective degassing by using vertical pumps; (2) consists of the proprietary air spargers and Morpholine catalyst for degassing. Morpholine catalyst degas the liquid sulfur 30 times faster than Quinoline or any other solvent with sparging air and within 1 hour residence time from 16-30 hours and to meet less than 10 ppmw of H2S in liquid sulfur. (3) The last compartment receives the degassed sulfur by overflow and transport through a pump or pumps to other facilities. An eductor will sweep vapor phase containing H2S, vaporized Morpholine with air where the pit vent can be sent to incineration or the reaction furnace. The tail gas stream from SRU can sweep the pit and the discharge shall be recycled to the tail gas unit, which ultimately zero emission can be achieved. 1. An integrated process for the liquid sulfur collection and degassing in the underground container , where the produced sulfur from any type of sulfur recovery processes including Claus; containing polysulfides and hydrogen sulfide is treated in the SuperDegas process comprising the following 7 steps:A—step 1) The process comprises an underground container as a concrete pit or a carbon steel vessel inside of the concrete pit of consisting at least three compartments;B—step 2) The process comprises to collect the liquid sulfur into the first compartment containing at least one vertical pump inside the container to agitate, create turbulent by increasing velocity and higher pressure of the liquid sulfur;C—step 3) The second compartment of SuperDegas process introduces the higher pressure streams of liquid sulfur ...

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Номер записи: 60
01-04-2021 дата публикации

CATALYST FOR CATALYTIC OXIDATIVE CRACKING OF HYDROGEN SULPHIDE WITH CONCURRENT HYDROGEN PRODUCTION

Номер: US20210094822A1
Автор: BARBA Daniela, Barbato Lucia, CINOTTI Pierlorenzo, Colozzi Michele, CORTESE Simona, MICCIO Marino, PALMA Vincenzo, PALO Emma
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Disclosed is a catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream. The catalyst comprises at least one or more active metals selected from the group consisting of iron, cobalt, and nickel, supported by a carrier comprising ceria and alumina. The active metal is preferably in the form of its sulphide. Also disclosed is a method for the production of hydrogen from a HS-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S, using a catalyst in accordance with any one of the composition claims. 1. A method for the production of hydrogen from a HS-containing gas stream , comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S , using a catalyst comprising at least one active metal selected from the group consisting of iron , cobalt , nickel , and combinations thereof , wherein said active metal is supported by a carrier comprising ceria and alumina.2. The method of claim 1 , wherein the composition of the catalyst comprises nickel.3. The method of claim 1 , wherein the catalytic oxidative cracking is conducted with a molar ratio HS/Oin the feedstock higher than 2:1 claim 1 , preferably in the range of from 2:1 to 6:1.4. The method of claim 3 , wherein the ratio is in a range of from 3:1 to 5:1 claim 3 , preferably 3.5:1 to 4.5:1.5. The method of claim 1 , wherein the catalytic oxidative cracking is conducted using an oxygen-containing gas-stream comprising at least 40 vol. % oxygen claim 1 , preferably at least 60 vol. % oxygen.6. The method of claim 5 , wherein the oxygen-containing gas-stream is oxygen having a purity of from 90-100 vol. %. 7.7. The method of claim 1 , wherein the catalytic oxidative cracking is conducted at a temperature in a range from 700° C. to 1300° C. claim 1 , preferably in a range from 950° C. to 1250° C.8. The method of claim 1 , comprising a further step of subjecting formed SO claim 1 , and optionally also COS and/or ...

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Номер записи: 61
06-04-2017 дата публикации

Systems and Methods for Degassing of Sulfur

Номер: US20170096337A1
Автор: Stephen N. Fenderson, Vincent W. Wong
Принадлежит: Fluor Technologies Corp

Contemplated systems and methods for removing polysulfides and hydrogen sulfide from liquid sulfur of a Claus plant include (a) physically separated steps of catalytic decomposition of polysulfides and gas stripping, or (b) use of the stripping gas as the continuous phase in a packed column with decomposition catalyst to so avoid catalyst attrition.

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Номер записи: 62
14-04-2016 дата публикации

Gasification or liquefaction of coal using a metal reactant alloy composition

Номер: US20160102374A1
Автор: Ian C. Bishop, Ronald G. Presswood, Jr.
Принадлежит: Ian C. Bishop, Ronald G. Presswood, Jr.

This invention relates to a method and apparatus for gasifying or liquifying coal. In particular, the method comprises reacting a coal with a molten aluminum or aluminum alloy bath. The apparatus includes a reaction vessel for carrying out the reaction, as well as other equipment necessary for capturing and removing the reaction products. Further, the process can be used to cogenerate electricity using the excess heat generated by the process.

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Номер записи: 63
26-03-2020 дата публикации

A PROCESS TO PREPARE ELEMENTAL SULPHUR

Номер: US20200095610A1
Автор: BUISMAN Cees Jan Nico, DE RINK Frederikus, KLOK Johannes Bernardus Maria, TER HEIJNE Annemiek
Принадлежит: PAQELL B.V.

The invention is directed to a process to prepare elemental sulphur by (i) contacting an aqueous solution comprising bisulphide with oxidised sulphide-oxidising bacteria under anaerobic conditions wherein elemental sulphur is produced and a reduced sulphide-oxidising bacteria is obtained and (ii) wherein the reduced sulphide-oxidising bacteria are oxidised by transfer of electrons to an anode of an electrochemical cell to obtain the oxidised sulphide-oxidising bacteria. 1. A process to prepare elemental sulphur by (i) contacting an aqueous solution comprising bisulphide with oxidised sulphide-oxidising bacteria under anaerobic conditions wherein elemental sulphur is produced and a reduced sulphide-oxidising bacteria is obtained and isolating elemental sulphur from the aqueous solution and (ii) wherein the reduced sulphide-oxidising bacteria are oxidised by transfer of electrons to an anode of an electrochemical cell to obtain the oxidised sulphide-oxidising bacteria.2. The process according to claim 1 , wherein the electrochemical cell comprises a cathode which transfers electrons to a compound having a more positive electrode potential than the electrode potential of the reduced sulphide-oxidising bacteria and wherein as a result of this difference in potential between anode and cathode an electric current between said electrodes results.3. The process according to claim 2 , wherein the compound having a higher electrode potential than the electrode potential of the reduced sulphide-oxidising bacteria is oxygen or nitrate.4. The process according to claim 1 , wherein the electrochemical cell comprises a cathode which transfers electrons to a compound having a more negative electrode potential than the electrode potential of the reduced sulphide-oxidising bacteria and wherein a potential is provided between anode and cathode such that the transfer of electrons can take place.5. The process according to claim 4 , wherein the compound having a lower electrode ...

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Номер записи: 64
02-06-2022 дата публикации

PROCESSES USEFUL IN THE MANUFACTURE OF CYCLODODECASULFUR

Номер: US20220169505A1
Автор: Barnicki Scott Donald, Chakraborty Sumit, DEPEW LESLIE SHARON, Hembre Robert Thomas, HUA Guoxiong, Laningham Michael Richard, OSBORNE VICKIE HAGOOD, STEVENS ANNETTE ELIZABETH, WOOLLINS John Derek
Принадлежит: EASTMAN CHEMICAL COMPANY

Methods for producing cyclododecasulfur are disclosed that include the steps of: reacting a metallasulfur derivative with a molecular halogen to produce cyclododecasulfur and a metallahalide derivative; and reacting the metallahalide derivative with a sulfide or polysulfide to produce the metallasulfur derivative and a halide. 1. A method for producing cyclododecasulfur , comprising:reacting a metallasulfur derivative with a molecular halogen to produce cyclododecasulfur and a metallahalide derivative; andreacting the metallahalide derivative with a sulfide or polysulfide to produce the metallasulfur derivative and a halide.2. The method of claim 1 , wherein the metallahalide comprises zinc.3. The method of claim 1 , wherein the metallahalide derivative is reacted with sulfide or polysulfide in the presence of elemental sulfur.4. The method of claim 1 , wherein the halide comprises one or more of a metal halide or a quaternary halide.5. The method of claim 1 , wherein the metallahalide derivative is reacted with a polysulfide claim 1 , wherein the polysulfide comprises a higher rank polysulfide dianion claim 1 , and wherein the reacting of the metallahalide derivative with the polysulfide also produces a lower rank polysulfide dianion.6. The method of claim 1 , further comprising oxidizing the halide to produce a mixture of molecular halogen claim 1 , a trihalide claim 1 , and a halide.7. The method of claim 6 , further comprising a step of reducing a polysulfide comprising a higher rank polysulfide dianion to produce a lower rank metal polysulfide dianion.8. The method of claim 7 , wherein the step of oxidizing the halide and the step of reducing the polysulfide are carried out together in an electrochemical cell comprising a catholyte chamber and an anolyte chamber separated by an ion-selective membrane which is permeable to cations claim 7 , wherein the polysulfide is reduced by electrons in the catholyte chamber claim 7 , and wherein the halide is oxidized in ...

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Номер записи: 65
02-06-2022 дата публикации

Processes useful in the manufacture of cyclododecasulfur

Номер: US20220169506A1
Автор: Annette Elizabeth STEVENS, Guoxiong Hua, John Derek Woollins, Leslie Sharon Depew, Michael Richard Laningham, Robert Thomas Hembre, Scott Donald Barnicki, Sumit CHAKRABORTY, Vickie Hagood OSBORNE
Принадлежит: Eastman Chemical Co

Methods for producing cyclododecasulfur are disclosed, that include the steps of: oxidizing a bromide in aqueous solution to produce a mixture of molecular bromine, tribromide, and bromide; reducing water to produce hydrogen and a hydroxide; and reacting a metallasulfur derivative with the molecular bromine, to produce cyclododecasulfur and a metallabromide derivative.

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Номер записи: 66
03-07-2014 дата публикации

HYDROGEN SULFIDE CONVERSION TO HYDROGEN

Номер: US20140186259A1
Автор: WASAS JAMES A
Принадлежит: SWAPSOL CORP.

A process and system for substantially eliminating contaminants from a gas and a gas produced therefrom. 1. A process for producing hydrogen from a gas stream comprising hydrogen sulfide or hydrogen sulfide and carbon dioxide , said process comprising: i. an inlet for introducing the gas stream into the interior chamber;', 'ii. the heating zone disposed in the interior chamber and adapted to contact said gas stream, said heating zone comprising a catalyst selected from the group consisting of azurite, malachite, and a metal having 75% nickel and 25% chromium;', 'iii. said membrane consisting of a ceramic membrane disposed in the interior chamber, said ceramic membrane being permeable to hydrogen gas but impermeable to hydrogen sulfide and sulfur vapor, said membrane interior defining a flow passageway in communication with a first outlet;', 'iv. the sulfur condenser being disposed in the interior chamber below the membrane in fluid communication with a second outlet; and', 'v. a gas outlet in communication with the interior chamber;, 'a. passing the gas stream to a vertical reactor chamber, wherein the reactor chamber has an outer cylindrical wall defining an interior chamber, said interior chamber including a heating zone, a membrane and a sulfur condenser, said reactor havingb. reacting the hydrogen sulfide and optionally the hydrogen sulfide and the carbon dioxide in the heating zone at temperature of from about 400° C. to about 700° C. wherein a conversion of hydrogen sulfide is at least about 95% to provide hydrogen gas and sulfur vapor, and optionally water in the interior chamber;c. continuously and immediately removing the hydrogen gas through said membrane to provide hydrogen and withdrawing the hydrogen from the first outlet;d. continuously condensing the sulfur vapor in the condensing zone to provide liquid sulfur withdrawing the liquid sulfur from the second outlet; ande. withdrawing a reactor effluent gas from the interior chamber from the gas outlet, ...

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Номер записи: 67
19-04-2018 дата публикации

A sulphur additive to suppress hydrogen sulphide emissions from sulphur extended asphalt

Номер: US20180105694A1
Автор: Kalpana Gopalakrishnan, Lintoan John, Mayur Navinchandra TALATI, Nagarathinam Shenbaga Murthy, Prakash Kumar, Raksh Vir Jasra, Ravishankar Vishvasrao DESAI, SATISH Kumar, Yogesh Suresh NIWATE
Принадлежит: Reliance Industries Ltd

The present disclosure relates to a sulphur additive to suppress hydrogen sulphide emissions from Sulphur Extended Asphalt. The sulphur additive of the present disclosure comprises 5 sulphur in an amount ranging from 80 to 98 wt % and at least one aluminosilicate in an amount ranging from 2 to 20 wt %. The sulphur additive of the present disclosure suppresses the H2S emission up to acceptable safe limit during the preparation and application of the sulphur extended asphalt at elevated temperature.

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Номер записи: 68
20-04-2017 дата публикации

CATALYST FOR A SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION, METHOD OF MAKING THEREOF AND THE SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION USING THE CATALYST

Номер: US20170106355A1
Автор: Angelini Fabio, Barbato Lucia, Colozzi Michele, PALMA Vincenzo, PALO Emma, Vaiano Vincenzo
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Disclosed is a catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream, particularly in the event that the stream also contains methane and/or ammonia. The catalyst comprises iron and molybdenum supported by a carrier comprising aluminium. The carrier preferably is alumina. The iron and molybdenum preferably are in the form of sulphides. Also disclosed is a method for the production of hydrogen from a HS-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S, using a catalyst in accordance with any one of the preceding claims. 1. A catalyst suitable for the catalytic oxidative cracking of a HS-containing gas stream , the catalyst comprising iron and molybdenum supported by a carrier comprising aluminium.2. A catalyst according to claim 1 , wherein the iron is in the form of iron sulphide.3. A catalyst according to or claim 1 , wherein the molybdenum is in the form of molybdenum sulphide.4. A catalyst according to any one of the preceding claims claim 1 , wherein the carrier is made up of AlO.5. A catalyst according to any one of the preceding claims claim 1 , wherein the iron is present in the catalyst in a range of from 1 to 50% by weight claim 1 , preferably 2% by weight of the catalyst.6. A catalyst according to any one of the preceding claims claim 1 , wherein the molybdenum is present in the catalyst in a range of from 1 to 50% by weight claim 1 , preferably 6% by weight of the catalyst.7. A method for the production of hydrogen from a HS-containing gas stream claim 1 , comprising subjecting the gas stream to catalytic oxidative cracking so as to form Hand S claim 1 , using a catalyst in accordance with any one of the preceding claims.8. A method according to claim 7 , wherein the catalytic oxidative cracking is conducted with a molar ratio HS/Oin the feedstock higher than 2:1 claim 7 , preferably in the range of 2:1-6:1.9. A method according to claim 8 , wherein the ratio is ...

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Номер записи: 69
19-04-2018 дата публикации

FRICTION MATERIAL COMPOSITION, AND FRICTION MATERIAL AND FRICTION MEMBER USING THE SAME

Номер: US20180106321A1
Автор: MATSUBA Kazuaki
Принадлежит: HITACHI CHEMICAL COMPANY, LTD.

A friction material composition imparts superior friction coefficient, abrasion resistance, aggressiveness against an opposite member, and brake noise preventive characteristics in high speed and high load braking to a friction material, although containing no copper, which can pollute rivers, lakes, the ocean, or other environments, or containing copper in an amount of at most 0.5 mass. Moreover, a friction material and a friction member each uses the friction material composition. The friction material composition includes a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains copper in an amount of at most 0.5 mass % as an element or contains no copper. The binder contains silicone-rubber dispersed phenolic resin in an amount of 5 to 10 mass %. The inorganic filler contains zirconium oxide in an amount of 20 to 33 mass %. 1. A friction material composition comprising a binder , an organic filler , an inorganic filler , and a fibrous base material ,wherein the friction material composition contains copper in an amount of at most 0.5 mass % as an element or contains no copper,the binder contains silicone-rubber dispersed phenolic resin in an amount of 5 to 10 mass %, andthe inorganic filler contains zirconium oxide in an amount of 20 to 33 mass %.2. The friction material composition according to claim 1 , wherein the inorganic filler contains titanate in an amount of 10 to 30 mass %.3. The friction material composition according to claim 1 , wherein the inorganic filler contains magnesium oxide in an amount of 3 to 10 mass %.4. The friction material composition according to claim 1 , wherein the inorganic filler contains metal sulfide in an amount of 3 to 8 mass %.5. A friction material molded by the friction material composition according to .6. A friction member molded by using a friction material claim 1 , which is molded by the friction material composition according to claim 1 , and a back ...

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Номер записи: 70
02-04-2020 дата публикации

PROCESS FOR PURIFYING CRUDE SYNTHESIS GAS TO PRODUCE AN ACID GAS AND ACID GAS SEPARATOR

Номер: US20200101415A1
Автор: Corbet Sharon, GUBRINSKI Alfred, PURI Pankaj, RAPPOLD Dorit, SCHMIDT Sophia
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude

The invention relates to a gas scrubbing process for purifying crude synthesis gas with methanol as a physical absorption medium, wherein an acid gas comprising at least hydrogen sulfide (HS) is produced. The acid gas is produced in a hot regenerator arranged downstream of an absorption apparatus and subsequently separated from gaseous methanol in an acid gas separator by cooling and condensation. The acid gas separator has a condensation region and an absorption region, wherein both regions are separated from one another by a gas-permeable tray. This has the result that impurities such as hydrogen cyanide and/or ammonia outgassing from a first acid gas substream are not reabsorbed in the condensation region of the acid gas separator, thus avoiding an accumulation of impurities in the hot regenerator or other parts of the gas scrubbing plant. The invention further relates to an acid gas separator and to the use of the acid gas separator according to the invention in a process according to the invention. 1. A process for purifying crude synthesis gas with methanol as a physical absorption medium , wherein an acid gas comprising hydrogen sulfide (HS) is produced and the process comprises the following process steps:{'sub': 2', '2', '3', '2', '3, 'a. treating crude synthesis gas comprising carbon monoxide (CO), hydrogen (H), hydrogen sulfide (HS) and hydrogen cyanide (HCN) and/or ammonia (NH) with methanol in an absorption apparatus to obtain a methanol laden with at least HS and HCN and/or NH;'}{'sub': 2', '3', '2', '3, 'b. hot-regenerating the methanol laden with HS and HCN and/or NHin a hot regenerator to obtain a gas mixture comprising at least methanol, HS, HCN and/or NHwhich is withdrawn from the hot regenerator;'}c. cooling the gas mixture withdrawn from the hot regenerator and transferring the cooled gas mixture into an acid gas separator, wherein the acid gas separator comprises an absorption region and a condensation region, wherein the absorption region and ...

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Номер записи: 71
11-04-2019 дата публикации

Systems and methods to manage heat in an integrated oil and gas processing plant with sour gas injection

Номер: US20190105602A1
Автор: Daniel Chinn, Nitesh BHUWANIA, Ronald P. MacDonald, Shabbir Husain, Tapan K. Das
Принадлежит: Chevron USA Inc

Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs. Hydrogen sulfide-selective membranes are used to remove hydrogen sulfide from bottlenecked plant process steps including hydrogen sulfide removal. In some embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using membranes while integrating heat from other existing process streams. In other embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using high temperature tolerant polymer membranes. Oil and/or gas production is increased.

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Номер записи: 72
11-04-2019 дата публикации

SYSTEMS AND METHODS TO REMOVE MERCAPTANS FROM SOUR GAS USING MEMBRANES

Номер: US20190105603A1
Автор: Bhuwania Nitesh, Chinn Daniel, Das Tapan K., Husain Shabbir, MacDonald Ronald P.
Принадлежит:

Disclosed are systems and methods for processing gas produced from oil and gas reservoirs while removing mercaptans from the gas. Mercaptan-selective membranes are used to debottleneck known systems and methods by removing mercaptans from bottlenecked plant process steps including LPG fractionation and mercaptan sweetening. Hydrogen sulfide can be simultaneously removed by the membranes. Production of on specification LPG and sales gases can be increased. 1. A system for increasing on-specification production of sales gas in an oil and gas production plant including mercaptan removal , comprising:a. a molecular sieve dehydration unit comprising at least one vessel in adsorption mode and at least one vessel in regeneration mode for dehydrating a stream of sweet gas;b. a cooler for cooling a regeneration gas from the molecular sieve dehydration unit to form a cooled stream;c. a knockout drum to separate the cooled stream into liquid water and a gas stream;d. a mercaptan-selective membrane to remove mercaptans from the gas stream to form a permeate stream enriched in mercaptans and a retentate stream depleted in mercaptans and enriched in hydrocarbon gases;e. a fractionation unit for separating a combined gas stream comprising the retentate stream and a stream of dehydrated sweet gas from the molecular sieve dehydration unit into LPG comprising propane and butane and sales gas comprising methane, ethane and some nitrogen and treating the combined gas stream with a caustic treatment to further remove mercaptans from the combined gas stream; andf. a Claus unit for converting mercaptans from the permeate streaminto elemental sulfur.2. A method for increasing on-specification production of sales gas in an oil and gas production plant including mercaptan removal , comprising:a. dehydrating a stream of sweet gas in a molecular sieve dehydration unit comprising at least one vessel in adsorption mode and at least one vessel in regeneration mode;b. cooling a regeneration gas ...

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Номер записи: 73
28-04-2016 дата публикации

DISPERSION OF SULFUR BY AMPHIPHILIC PROTEINS

Номер: US20160114302A1
Автор: Li Fan, OUSMAN ERENA FARAH, RISHTON VICTORIA
Принадлежит:

Dispersion of elemental sulfur in amphiphilic proteins. The elemental sulfur dispersed in aqueous solutions with one or more amphiphilic proteins. A process using one or more hydrophobins to disperse the elemental sulfur in an aqueous solution. Further a process using bovine serum albumin to disperse elemental sulfur in an aqueous solution. 1. A process for preparing an aqueous dispersion of elemental sulfur , the process comprising the step mixing one or more amphiphilic proteins , elemental sulfur and water to form an aqueous dispersion of elemental sulfur.2. The process of wherein the amphiphilic protein and the elemental sulfur are nixed prior to being mixed with water.3. The process of wherein the elemental sulfur is added to water before the amphiphilic protein is added.4. The process of wherein the elemental sulfur is milled prior to mixing with water.5. The process of wherein the amphiphilic protein is hydrophobin.6. The process of wherein the amphiphilic protein is bovine serum albumin.7. The process of wherein the mixing is performed by sonication.8. The process of wherein the aqueous dispersion further comprises acids claim 1 , bases claim 1 , buffers claim 1 , polar organic solvents selected from a group consisting of ethanol claim 1 , acetone claim 1 , dioxane claim 1 , dimethylformamide and dimethylsulfoxide.9. The process of wherein the aqueous dispersion comprises at east 50% water.10. The process of wherein the concentration of elemental sulfur in the aqueous dispersion is about 50 weight %.11. The process of wherein the concentration of elemental sulfur in the aqueous dispersion is about 20 weight %.12. The process of wherein the concentration of elemental sulfur in the aqueous dispersion is from 0.1 weight % to 10 weight %.13. The process of wherein the concentration of the amphiphilic protein in the aqueous dispersion is at least about 0.0001 weight %.14. The process of wherein the concentration of the amphiphilic protein in the aqueous ...

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Номер записи: 74
28-04-2016 дата публикации

ZERO EMISSIONS SULPHUR RECOVERY PROCESS WITH CONCURRENT HYDROGEN PRODUCTION

Номер: US20160115026A1
Автор: Angelini Fabio, Barbato Lucia
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

Disclosed is a process for the concurrent production of hydrogen and sulphur from a HS-containing gas stream, with reduced, and preferably zero, emissions. The method comprises the catalytic oxidative cracking of HS so as to form Hand S. Preferably, the oxidation is conducted using oxygen-enriched air, preferably pure oxygen. The process is conducted in a reaction chamber comprising a bifunctional catalyst material, so as to favor both the partial oxidation of HS and the dissociation thereof. 1. A plant suitable for conducting the catalytic oxidative cracking of a H2S-containing gas stream , said plant comprising an inlet for a H2S-containing acid gas stream , an inlet for an oxygen-comprising stream , and a catalytic oxidative cracking reaction zone , comprising at least one catalytic material suitable for H2S partial oxidation and cracking.2. A plant according to claim 1 , wherein the catalytic material comprises a single catalyst selected from the group consisting of Pt claim 1 , Rh claim 1 , Ru claim 1 , Ir claim 1 , Pd claim 1 , Co claim 1 , Mo claim 1 , Ni claim 1 , Fe claim 1 , W claim 1 , Cu claim 1 , Cd claim 1 , the corresponding sulphides claim 1 , the corresponding oxides claim 1 , and combinations of the foregoing; or comprises an oxidation catalyst selected from the group consisting of one or more active components selected from Group VIII metals and a cracking catalyst selected from the group consisting of metal sulphides.3. A plant according to claim 1 , further comprising a gas quench zone downstream from the reaction zone. This application is a continuation of U.S. application Ser. No. 14/115,831 having an international filing date of 7 May 2012, now allowed, which is the national phase of PCT application PCT/NL2012/050308 having an international filing date of 7 May 2012, which claims benefit of European application No. 11165181.6, filed 6 May 2011. The contents of the above patent applications are incorporated by reference herein in their ...

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Номер записи: 75
30-04-2015 дата публикации

LOW-VISCOSITY LIQUID SULFUR

Номер: US20150118140A1
Автор: SCHMITT Paul Guillaume
Принадлежит: Arkema France

The invention relates to the use of at least one compound of formula (1): 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)13. The method as claimed in claim 12 , wherein the at least one compound of formula (1) is chosen from those for which R and R′ represent claim 12 , independently of each other claim 12 , a saturated hydrocarbon-based radical (alkyl radical) containing from 1 to 12 carbon atoms.14. The method as claimed in claim 12 , wherein the hydrocarbon-based radicals R and R′ of the at least one compound of formula (1) are identical.15. The method as claimed in claim 12 , wherein the at least one compound of formula (1) is chosen from those for which R and R′ claim 12 , represent claim 12 , independently of each other claim 12 , an alkyl radical containing from 1 to 6 carbon atoms claim 12 , and n represents an integer between 2 and 6 claim 12 , limits inclusive.16. The method as claimed in claim 12 , wherein the at least one compound of formula (1) is selected from the group consisting of dimethyl sulfide claim 12 , diethyl sulfide claim 12 , dipropyl sulfide claim 12 , dibutyl sulfide claim 12 , dimethyl disulfide claim 12 , diethyl disulfide claim 12 , dipropyl disulfide and dibutyl disulfide claim 12 , the trisulfide homologs thereof claim 12 , the tetrasulfide homologs thereof claim 12 , the pentasulfide homologs thereof and the hexasulfide homologs thereof claim 12 , alone or as mixtures of two or more thereof in all proportions.17. The method as claimed in claim 12 , wherein the at least one compound of formula (1) is selected from the group consisting of DMDS claim 12 , DEDS claim 12 , DPDS and DBDS claim 12 , and also mixtures of two or more thereof in all proportions.18. The method as claimed in claim 12 , wherein the amount of at least one compound of formula (1) is between 0.0001 mol and 1 mol per 100 mol of sulfur.19. The method as claimed in claim ...

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Номер записи: 76
09-06-2022 дата публикации

REVAMPING OF A CLAUS PLANT WITH A SULFURIC ACID PLAN

Номер: US20220177306A1
Автор: Lykke Mads, MØLLERHØJ Martin, THELLEFSEN Morten
Принадлежит: Haldor Topsoe A/S

A revamp process for modifying a sulfur abatement plant including a Claus process plant, the Claus process plant including a Claus reaction furnace and one or more Claus conversion stages, each Claus conversion stage including a conversion reactor and a means for elemental sulfur condensation, and a means of Claus tail gas oxidation configured for receiving a Claus tail gas from said Claus process plant and configured for providing an oxidized Claus tail gas, the process revamp including: a) providing a sulfuric acid producing tail gas treatment plant producing sulfuric acid, and b) providing a means for transferring an amount or all of the sulfuric acid produced in said sulfuric acid producing tail gas treatment plant to said Claus reaction furnace, wherein the moles of sulfur in the transferred sulfuric acid relative to the moles of elemental sulfur withdrawn from the Claus process plant is from 3% to 25%. 1. A revamp process for modifying a sulfur abatement plant comprising a Claus process plant producing elemental sulfur , said Claus process plant comprising a Claus reaction furnace and 1 or more Claus conversion stages , each Claus conversion stage comprising a conversion reactor and a means for elemental sulfur condensation , and a means of Claus tail gas oxidation configured for receiving a Claus tail gas from said Claus process plant and configured for providing an oxidized Claus tail gas ,said process revamp comprising the steps ofa. providing a sulfuric acid producing tail gas treatment plant producing sulfuric acid, andb. providing a means for transferring an amount or all of the sulfuric acid produced in said sulfuric acid producing tail gas treatment plant to said Claus reaction furnace,wherein the moles of sulfur in the transferred sulfuric acid relative to the moles of elemental sulfur withdrawn from said Claus process plant is from 3% to 25%.2. The revamp process of claim 1 , further comprising the step of limiting the number of Claus conversion ...

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Номер записи: 77
09-06-2022 дата публикации

METHOD FOR PRODUCTION OF SULFUR AND SULFURIC ACID

Номер: US20220177307A1
Автор: Lykke Mads, MØLLERHØJ Martin, SØRENSEN Per Aggerholm, THELLEFSEN Morten
Принадлежит: Haldor Topsoe A/S

A process plant and a process for production of sulfur from a feedstock gas including from 15% to 100 vol % HS and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing to a Claus reaction furnace operating at elevated temperature, c) cooling to provide a cooled Claus converter feed gas, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elementary sulfur, f) directing a stream comprising said Claus tail gas to a Claus tail gas treatment, wherein sulfuric acid directed to said Claus reaction furnace is in the form of droplets with 90% of the mass of the droplets having a diameter below 500 μm, with the associated benefit of such a process efficiently converting all liquid HSOto gaseous HSOand further to SO. 1. A process for production of sulfur from a feedstock gas comprising from 15% to 100 vol % HS and a stream of sulfuric acid , the process comprising:a. providing a Claus reaction furnace feed stream comprising said feedstock gas, an amount of sulfuric acid, an amount of oxygen and optionally an amount of fuel, wherein the amount of oxygen is substoichiometric,b. directing said Claus reaction furnace feed stream to a Claus reaction furnace operating at elevated temperature, providing a Claus converter feed gas,c. cooling said Claus converter feed gas to provide a cooled Claus converter feed gas and optionally withdrawing elemental sulfur from the gas,d. directing said cooled Claus converter feed gas after optional reheating to contact a material catalytically active in the Claus reaction,e. withdrawing a Claus tail gas and elemental sulfur, optionally by cooling the effluent from said material catalytically active in the Claus reaction,f. directing a stream comprising said Claus tail gas to a Claus tail gas treatment, wherein said sulfuric acid directed to said Claus reaction furnace being in the form ...

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Номер записи: 78
27-04-2017 дата публикации

Configurations And Methods For Processing High Pressure Acid Gases With Zero Emissions

Номер: US20170114295A1
Автор: Mak John
Принадлежит:

Plants, processes, and methods for reducing the HS and COcontents of shale gasses from fields that produce shale gasses having varying HS and COcontents are provided. Acid gas enters an absorber and is scrubbed using a lean physical solvent, producing a treated gas and a rich physical solvent. The HS content of the treated gas is further reduced in an amine absorber, producing a pipeline gas and a semi-lean amine. The pipeline gas contains lower levels of HS and COthan gas produced using a polishing bed. A physical solvent regeneration unit regenerates the lean physical solvent from the rich physical solvent for feeding into the absorption unit. An amine regeneration unit regenerates the lean amine from the semi-lean amine for feeding into the amine absorber. Contemplated plants may further comprise a Claus Unit or a Redox unit for oxidizing HS to elemental sulfur. 1. An acid gas processing plant , comprising:an absorption unit configured to (i) receive a feed gas comprising H2S and CO2 and (ii) use a lean physical solvent to absorb a portion of H2S and CO2 within the feed gas to produce a treated gas and a rich physical solvent;an amine absorber coupled to the absorption unit and configured to (i) receive the treated gas from the absorption unit and (ii) use a first portion of a lean amine to absorb a portion of H2S and CO2 within the treated gas to produce a pipeline gas and a semi-lean amine;a physical solvent regeneration unit coupled to the absorption unit and configured to (i) receive the rich physical solvent from the absorption unit and (ii) regenerate the lean physical solvent from the rich physical solvent for feeding into the absorption unit; andan amine regeneration unit coupled to the amine absorber and configured to (i) receive the semi-lean amine from the amine absorber and (ii) regenerate the lean amine from the semi-lean amine for feeding into the amine absorber.2. The plant of claim 1 , wherein the physical solvent regeneration unit comprises (i) a ...

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Номер записи: 79
09-04-2020 дата публикации

A PROCESS TO CONVERT BISULPHIDE TO ELEMENTAL SULPHUR

Номер: US20200109052A1
Автор: BUISMAN Cees Jan Nico, DE RINK Frederikus, KLOK Johannes Bernardus Maria, TER HEIJNE Annemiek
Принадлежит: PAQELL B.V.

The invention is directed to a control method for a process to convert bisulphide to elemental sulphur in an aqueous solution comprising sulphide-oxidising bacteria wherein the process is controlled by applying a potential between the anode electrode and the cathode electrode or between the anode electrode and the reference electrode of an electrochemical cell resulting in a current between the cathode electrode and the anode electrode, measuring a current as measured by an electrochemical cell and adapting the process in response to the measured current. The process to convert bisulphide may comprise the following steps: (a) contacting bisulphide with oxidised sulphide-oxidising bacteria in the aqueous solution and elemental sulphur, (b) oxidizing the reduced sulphide-oxidising bacteria, (c) using the oxidised sulphide-oxidising bacteria obtained in step (b) in step (a) and (d) isolating elemental sulphur from the aqueous solution obtained in step (a) and/or step (b). 1. A control method for a process to convert bisulphide to elemental sulphur in an aqueous solution comprising sulphide-oxidising bacteria wherein the control method comprisesproviding an electrochemical cell comprising a cathode electrode, an anode electrode and a reference electrode,wherein the electrodes are in contact with the aqueous solution,wherein a potential is applied, the applied potential, between the anode electrode and the cathode electrode or between the anode electrode and the reference electrode resulting in a current between the cathode electrode and the anode electrode,wherein the current is measured running between the cathode electrode and the anode electrode while maintaining a constant potential between the anode electrode and the cathode electrode or while maintaining a constant potential between the anode electrode and the reference electrode,wherein the measured current is a measure of the bioactivity of the sulphide-oxidising bacteria to convert bisulphide to elemental ...

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Номер записи: 80
05-05-2016 дата публикации

Claus hydrocarbon destruction via staged solvent regeneration

Номер: US20160121262A1
Автор: Frank Bela
Принадлежит: Individual

A solvent for absorbing H 2 S and CO 2 is regenerated using two regenerators. Rich solvent is fed to a first regenerator producing a first acid gas stream from the top, and a partially regenerated solvent from the bottom. The partially regenerated solvent is fed to a second regenerator producing an overhead vapor stream from the top and a lean solvent stream from the bottom. A portion of the second regenerator overhead vapor stream may be cascaded to the first regenerator to contact rich solvent. The first acid gas stream and the remaining second regenerator overhead vapor stream are respectively fed to the first and second reaction zones of a two-stage Claus reaction furnace. Substantially all volatile organic contaminants are stripped in the first regenerator, and thus favorably destroyed in the first reaction furnace zone by virtue of higher local combustion temperatures and closer approach to oxidizing conditions.

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Номер записи: 81
05-05-2016 дата публикации

Zero emissions sulphur recovery process with concurrent hydrogen production

Номер: US20160122184A1
Автор: Fabio Angelini, Lucia Barbato, Lucio Molinari
Принадлежит: Stamicarbon BV

Disclosed is a process for the concurrent production of hydrogen and sulphur from a H 2 S-containing gas stream, with zero emissions. The method comprises the thermal oxidative cracking of H 2 S so as to form H 2 and S 2 . Preferably, the oxidation is conducted using oxygen-enriched air, preferably pure oxygen. The ratio H 2 S/O 2 in the feedstock is higher than 2:1, preferably in the range of 3:1-5:1.

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Номер записи: 82
14-05-2015 дата публикации

SULFUR RECOVERY UNIT

Номер: US20150132213A1
Автор: OConnell John P.
Принадлежит:

A sulfur recovery unit for processing an acid gas feed to recover elemental sulfur, the sulfur recovery unit comprising a reaction furnace configured to burn the acid gas feed, an oxygen source, and a fuel gas to create a furnace outlet stream, the acid gas feed comprises hydrogen sulfide which is converted to elemental sulfur, a waste heat boiler configured to capture heat from the furnace outlet stream to create a cooled stream, a condenser configured to condense the cooled stream to produce a waste gas stream and a condensed stream comprising elemental sulfur, a thermal oxidizer configured to burn the waste gas stream to create a sulfur dioxide rich stream, and a sulfur dioxide scrubbing unit configured to remove the amount of sulfur dioxide from the sulfur dioxide rich stream to create an effluent stream and a recycle stream recycled to the reaction furnace. 1. A sulfur recovery unit for processing an acid gas feed to recover elemental sulfur , the sulfur recovery unit comprising: wherein the acid gas feed comprises hydrogen sulfide,', 'wherein the hydrogen sulfide is converted to the elemental sulfur in the reaction chamber;, 'a reaction furnace, the reaction furnace configured to burn the acid gas feed, an oxygen source, and a fuel gas to create a furnace outlet stream, the reaction furnace comprises a main burner and a reaction chamber, the main burner is configured to heat the acid gas feed, the oxygen source, and the fuel gas to a minimum reaction temperature,'} 'wherein the heat captured from the furnace outlet stream is operable to heat a water feed to create steam;', 'a waste heat boiler fluidly connected to the reaction furnace, the waste heat boiler configured to capture heat from the furnace outlet stream to create a cooled stream,'} wherein the waste gas stream comprises sulfur-containing contaminants, and', 'wherein the condensed stream comprises the elemental sulfur;, 'a condenser fluidly connected to the waste heat boiler, the condenser configured ...

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Номер записи: 83
27-05-2021 дата публикации

RECOVERY OF METALS FROM PYRITE

Номер: US20210156003A1
Автор: TONG Andrew Robert
Принадлежит:

A process is disclosed for the recovery of a metal from a pyrite-bearing material. The process comprises thermally decomposing the pyrite-bearing material so as to produce a material comprising pyrrhotite (FeS). The process also comprises leaching the material comprising pyrrhotite with an acid such that the iron in the pyrrhotite is oxidised to a +3 oxidation state, elemental sulphur is produced and the metal is released from the pyrite-bearing material. 1. A process for treating a pyrite-bearing material to enable the recovery therefrom of a metal , elemental sulphur and FeO , the process comprising:(a) thermally decomposing the pyrite-bearing material so as to produce a material comprising pyrrhotite (FeS) and a separate elemental sulphur material;{'sub': 2', '3', '2', '3, '(b) leaching the material comprising pyrrhotite from (a) with an acid, the leaching conditions being controlled such that the metal is released from the material comprising pyrrhotite, the iron in the pyrrhotite is oxidised to FeO, and the sulphur in the pyrrhotite is oxidised to elemental sulphur in a form that is separate from the metal and that is separable from the FeO.'}2. A process as claimed in wherein oxygen is added to the leaching stage (b) to form the FeO claim 1 , with the FeObeing removed from the leaching stage (b) along with elemental sulphur solids.3. A process as claimed in claim 1 , wherein in leaching stage (b) the material comprising pyrrhotite is leached with an acid by mixing it with an acidic aqueous solution claim 1 , wherein the metal is released into the solution to be recovered therefrom.4. A process as claimed in claim 3 , wherein solution pH in leaching stage (b) is controlled to be in the range of −1 to 3.5 to promote the precipitation of iron as FeO.5. A process as claimed in claim 3 , wherein solution temperature in leaching stage (b) is controlled to be in the range of around 95-220° C.6. A process as claimed in claim 1 , wherein when the acid comprises an ...

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Номер записи: 84
31-07-2014 дата публикации

STAGED COMBUSTION OF SULFUREOUS COMBUSTIBLE EFFLUENTS WITH RECOVERY OF THE SULFUR IN THE CLAUS PROCESS

Номер: US20140208998A1
Автор: Maktouf Soufene, Nougayrede Jean
Принадлежит: TOTAL SA

The invention relates to a process for advantageously efficiently treating a sulfureous combustible effluent stream by recovering the sulfur in elemental form. This process consists especially of the succession of two steps: 1. Process for treating a sulfureous combustible effluent stream , comprising the successive steps consisting in:introducing into a combustion chamber the said stream and an oxidant gas in excess, performing the total combustion of the said stream with an excess of the oxidant gas, and withdrawing the gaseous effluent from the combustion chamber;{'sub': 2', '3', 'x, 'reacting, in a post-combustion chamber, a mixture consisting of the said gaseous effluent and an acidic gas, the said acidic gas being in an amount sufficient for all of the oxidant compounds to be consumed by reaction with the hydrogen sulfide of the acidic gas, the oxidant compounds being O, SOand NO, and withdrawing the treated stream, the residence time of all of the gaseous streams in the said post-combustion chamber being at least greater than 0.5 second.'}2. Process according to claim 1 , characterized in that the sulfureous combustible effluent stream treated in the process according to the invention is a stream of sulfur polluted with combustible impurities.3. Process according to claim 1 , characterized in that the sulfureous combustible effluent stream treated in the process according to the invention is a DSO.4. Process according to claim 1 , characterized in that the temperature of the combustion reaction is between 1300° C. and 1500° C. claim 1 , preferably between 1350° C. and 1450° C. and even more preferably between 1400° C. and 1450° C.5. Process according to claim 1 , the said process also comprising a step consisting in cooling the treated stream withdrawn from the post-combustion chamber.6. Process according to claim 1 , the said process also comprising a step consisting in removing the sulfur in elemental form from the treated stream withdrawn from the post- ...

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Номер записи: 85
11-05-2017 дата публикации

PROCESS FOR OXIDATIVE DESULFURIZATION AND SULFONE MANAGEMENT BY GASIFICATION

Номер: US20170130141A1
Автор: BOURANE Abdennour, KOSEOGLU Omer Refa, Kressmann Stephane
Принадлежит:

A method and apparatus for upgrading a hydrocarbon feedstock is provided. The method includes: supplying the hydrocarbon feedstock to an oxidation reactor, where the hydrocarbon feedstock is oxidized in the presence of a catalyst under conditions sufficient to selectively oxidize sulfur compounds present in the hydrocarbon feedstock; separating the hydrocarbons and the oxidized sulfur compounds by solvent extraction; collecting a residue stream that includes oxidized sulfur compounds; supplying a residue stream that includes oxidized sulfur compounds; supplying the residue stream to a gasifier to produce a syngas stream and a hydrogen sulfide stream; supplying the extracted hydrocarbon stream to a stripper to produce a stripped oil stream, which is then supplied to an adsorption column, such that the adsorption column can produce a high purity hydrocarbon product stream, a second residue stream, and a spent adsorbent stream, the spent adsorbent stream containing another portion of the oxidized compounds; and supplying the spent adsorbent stream to the gasifier to produce additional syngas for the syngas stream, thereby disposing of the adsorbent. 1. A method of upgrading a hydrocarbon feedstock , the method comprising the steps of:supplying the hydrocarbon feedstock to an oxidation reactor, the hydrocarbon feedstock comprising sulfur compounds;contacting the hydrocarbon feedstock with an oxidant in the presence of a catalyst in the oxidation reactor under conditions sufficient to selectively oxidize sulfur compounds present in the hydrocarbon feedstock to produce an oxidized hydrocarbon stream that comprises hydrocarbons and oxidized sulfur compounds;separating the hydrocarbons and the oxidized sulfur compounds in the oxidized hydrocarbon stream by solvent extraction with a polar solvent to produce an extracted hydrocarbon stream and a mixed stream, the mixed stream comprising the polar solvent and the oxidized sulfur compounds, wherein the extracted hydrocarbon ...

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Номер записи: 86
19-05-2016 дата публикации

DEGASSING SYSTEM AND DEVICE FOR DEGASSING LIQUID SULFER

Номер: US20160137499A1
Автор: Forbes Brandon W., Groves Brian Nathaniel Greenway, Willingham Thomas C.
Принадлежит:

Embodiments of the invention are directed to a sulfur recovery system that utilizes a degassing system for degassing liquid sulfur. The degassing system includes a degassing device vessel, a pressure equalizer, a motive force device, a sulfur cooler, and/or a process gas cooler. The degassing system may be located within or outside of the sulfur recovery unit and utilizes the process gas from the sulfur recovery unit. The degassing device may receive liquid sulfur and process gas, which are passed through a catalyst, which along with the process gas, degasses the liquid sulfur. As such, the degassing system when used within the sulfur recovery unit degasses the liquid sulfur to reduce off-gassing of dangerous hydrogen sulfide during storage and transportation without the need for additional equipment to degas the liquid sulfur during or after the sulfur storage. 1. A degassing system for a sulfur recovery system , comprising:a degassing vessel, wherein the degassing vessel is configured to receive liquid sulfur from one or more condensers and process gas from any location of the sulfur recovery system, wherein the degassing vessel outputs degassed liquid sulfur for storage, and wherein the degassing vessel returns the process gas used to degas the liquid sulfur to the sulfur recovery system at any location; anda downstream pressure equalizer, wherein the downstream pressure equalizer receives the degassed liquid sulfur from the degassing vessel, separates the degassed liquid sulfur from any remaining gas, and delivers the degassed liquid sulfur to sulfur storage without the remaining gas.2. The degassing system of claim 1 , further comprising:a motive force device configured to supplement pressure of the process gas exiting the degassing vessel and being returned to the sulfur recovery system.3. The degassing system of claim 1 , further comprising:{'sub': '2', 'at least one sulfur cooler configured to receive the liquid sulfur from the one or more condensers, cool ...

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Номер записи: 87
19-05-2016 дата публикации

MODIFIED SULFUR, METHOD FOR PREPARING SAME, APPARATUS FOR PREPARING SAME, AND USE THEREOF

Номер: US20160137500A1
Автор: KIM Goo Dae, KWON Hyok, NOH Hyuk Rae, PARK No Gyung, SEO Young Sik, YU Seung Gun
Принадлежит: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Disclosure relates to modified sulfur, preparation method thereof, preparation equipment thereof. The modified sulfur has spinnability or includes micro-structures such as fiber-, film- and network-like structure. The modified sulfur can be prepared by inducing polymerization with ultrasonic or ageing. The modified sulfur has various excellent features such as anticorrosiveness, waterproofing, strength, and fast drying and can control the features depending on its viscosity or polymerization degree. In addition due to the above features, the modified sulfur can be applied to anticorrosive or waterproofing material and can prepare anticorrosive or waterproofing material which has good workability, hardening, salt spray resistance, and weldability exceeding a certain level, and specially improved adhesiveness. Furthermore, when applying the modified sulfur to asphalt composition, gelation and depression are reduced, properties such as bending strength and tensile strength are improved, and it is possible to obtain asphalt composition with good working stability at RT. 1. Modified sulfur comprising 100 parts by weight of sulfur and 1˜300 parts by weight of dicyclopentadiene-based modifier and having 3 ,000˜2 ,000 ,000 cP of viscosity at 135° C. , which comprises micro-structures such as fiber , film , or network structure , or has spinnability.2. The modified sulfur of which comprises 1˜200 parts by weight of initiator claim 1 , based on 100 parts by weight of the sulfur.3. The modified sulfur of claim 2 , wherein the initiator comprises at least one selected from the group consisting of sulfur claim 2 , modified sulfur claim 2 , asphalt claim 2 , sulfide claim 2 , polysulfide claim 2 , hydrocarbon compound claim 2 , and their combinations.4. The modified sulfur of claim 2 , wherein the initiator comprises at least one selected from the group consisting of trans cinnamaldehyde claim 2 , dimethylaniline claim 2 , dibuthylphthalate claim 2 , diiodomethane claim 2 , ...

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Номер записи: 88
03-06-2021 дата публикации

Gravity Actuated Flow Control Apparatus and Method

Номер: US20210164578A1
Автор: Smith Strom W.
Принадлежит:

Embodiments of a flow control apparatus of the present invention generally include a vessel equipped with a substantially vertical, bottom-feeding liquid inlet line, a vapor space pressure equalization line, and a liquid outlet, wherein the vessel contains a pair of connected, horizontally oriented, O-ring and/or piston ring equipped sealing plates that are designed to rise and fall as a pair in response to gravity provided liquid pressure in the sump of the vessel, whereby an elevation of the sealing plates provides the liquid in fluid communication with the liquid outlet via internal orifices fluidly connected to one or more fluid conduits. Embodiments of a method of using embodiments of an apparatus of the present invention to control liquid flow are also provided. 1. A flow control apparatus comprising:a vessel; an upper plate assembly comprising one or more sealing members;', 'a lower plate assembly comprising one or more sealing members; and', 'a plate connector rod connecting said upper plate assembly to said lower plate assembly;, 'a sealing component comprisingone or more fluid conduits;a vapor equalization line;a liquid inlet line comprising a substantially vertical segment; anda liquid outlet; said sealing component is vertically displaceable within said vessel;', 'said liquid inlet line substantially vertical segment is fluidly connected to a sump of said vessel;', 'said vessel comprises one or more orifices through an interior wall thereof which are each fluidly connected to at least one said fluid conduit;', 'at least one said fluid conduit is fluidly connected to said liquid outlet;', 'an upper internal section of said vessel above said upper plate assembly is in fluid communication with said liquid inlet line via said vapor equalization line; and', 'when liquid in said substantially vertical segment of said liquid inlet line provides sufficient force to a bottom surface of said lower plate assembly and causes said sealing component to be displaced ...

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Номер записи: 89
07-08-2014 дата публикации

SULFUR GRANULATOR SYSTEM AND METHOD

Номер: US20140217631A1
Автор: De Paoli Sergio A., Irani Jamsheed P., Lang Leslie L., Metheral Casey J.
Принадлежит:

Sulfur (or sulphur) spray nozzles disposed with a tank spray liquid molten sulfur into the cooling liquid in the tank. Solid sulfur seeds are formed in the cooling liquid and settle in the tank. The tank may be a spiral dewaterer tank that has a screw conveyor at the bottom of the tank that moves the seeds to a granulating drum for enlargement into sulfur granules. The tank may also he used to capture and remove sulfur dust from a slurry of sulfur dust and water recycled from the granulating drum. The sulfur dust in the cooling tank may be captured by contact with molten sulfur droplets streaming down the cooling liquid column such that the dust particles become incorporated into the droplet, thereby being converted to seed. The granulating drum may be equipped with two or more sets of segmented lifting flights. The sets of flights may not be in alignment. The flights may be spaced apart from the inside surface of the drum with segmented rib members. The rib members may allow for the movement of sulfur seeds and granules between the nights and the inside surface of the drum as the drum rotates. 1. A system for converting molten sulfur into sulfur seeds used for making sulfur granules , comprising:tank storing a fluid;a first nozzle disposed with said cooling tank;the molten sulfur sprayed by said first nozzle into said liquid; andsulfur seeds formed by the interaction of the sulfur with the liquid.2. The system of claim 1 , wherein the tank is a spiral dewaterer tank having an angled bottom surface and a screw conveyor.3. The system of claim 2 , wherein the sulfur seeds are transported out of the tank with said screw conveyor.4. The system of claim 3 , further comprising:a granulating drum for enlarging sulfur seeds into granules coupled to the tank, wherein the sulfur seeds are transported with said screw conveyor to said drum.5. The system of claim 4 , further comprising:a drum effluent line in fluid communication between said granulating drum and said tank ...

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Номер записи: 90
28-05-2015 дата публикации

PROCESS FOR DEEP CONTAMINENT REMOVAL OF GAS STREAMS

Номер: US20150144840A1
Автор: Valenzuela Diego Patricio
Принадлежит:

A process for removing sulfur-containing contaminants from a gas stream comprising: 1. A process for removing sulfur-containing contaminants from a gas stream , the process comprising the steps of:(a) providing a gas stream comprising natural gas, hydrogen sulfide, organic sulfur compounds and carbon dioxide to a first absorption unit, resulting in a hydrogen sulfide lean gas stream and a hydrogen sulfide rich absorbent;(b) providing the hydrogen sulfide lean gas stream to a second absorption unit, resulting in a cleaned gas stream and an absorbent rich in organic sulfur compounds and in carbon dioxide;(c) providing a first regenerator with the hydrogen sulfide rich absorbent from the first absorption unit, to obtain a lean absorbent and a hydrogen sulfide rich gas stream;(d) providing the hydrogen sulfide rich gas to a Claus unit comprising a Claus furnace and a Claus catalytic stage to convert the hydrogen sulfide to obtain sulfur and a Claus tail gas;(e) providing a second regenerator with the absorbent rich in organic sulfur compounds and in carbon dioxide to obtain a lean absorbent and a gas stream rich in organic sulfur compounds and in carbon dioxide;(f) fully oxidizing all sulfur species of the gas stream rich in organic sulfur compounds and in carbon dioxide to obtain a sulfur dioxide rich gas stream;(g) cooling of the sulfur dioxide rich stream to obtain steam, water and a cooled sulfur dioxide rich gas stream;(h) providing a third absorption unit with the sulfur dioxide rich gas stream to obtain a sulfur dioxide rich absorbent and sulfur dioxide lean gas stream; and(i) providing a third regenerator with the sulfur dioxide rich absorbent from the third absorption unit, to obtain a lean absorbent and a purified sulfur dioxide gas stream.2. A process according to claim 1 , wherein the purified sulfur dioxide gas stream as obtained in step (i) is sent to the Claus furnace or to the Claus catalytic stage of step (d).3. A process according to claim 1 , wherein ...

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Номер записи: 91
18-05-2017 дата публикации

SULFUR RECOVERY PROCESS FOR TREATING LOW TO MEDIUM MOLE PERCENT HYDROGEN SULFIDE GAS FEEDS WITH BTEX IN A CLAUS UNIT

Номер: US20170137288A1
Автор: Ballaguet Jean-Pierre R., Duval Sebastien A., Harale Aadesh, Khawajah Anwar H., Tammana Veera Venkata R., Vaidya Milind M.
Принадлежит:

An enrichment apparatus and process for enriching a hydrogen sulfide concentration in an acid gas stream to create a hydrogen sulfide rich stream for feed to a Claus. The enrichment apparatus comprises a hydrocarbon selective separation unit operable to separate the acid gas stream into a hydrocarbon rich stream and a purified acid gas stream, wherein the acid gas stream comprises hydrogen sulfide, carbon dioxide, and hydrocarbons, a hydrogen sulfide selective separation unit operable to separate the purified acid gas stream to create the hydrogen sulfide rich stream and a hydrogen sulfide lean stream, the hydrogen sulfide rich stream having a concentration of hydrogen sulfide, and the Claus unit operable to recover sulfur from the carbon dioxide lean stream. The enrichment apparatus can include a carbon dioxide selective separation unit in fluid communication with the hydrogen sulfide selective separation unit, operable to separate the hydrogen sulfide rich stream. 1. An enrichment apparatus for enriching a hydrogen sulfide concentration in an acid gas stream to create a hydrogen sulfide rich stream for feed to a Claus unit , the enrichment apparatus comprising: 'wherein the acid gas stream comprises aromatics selected from the group consisting of benzene, toluene, ethyl benzene, xylenes and combinations thereof; and', 'a hydrocarbon selective separation unit, the hydrocarbon selective separation unit operable to separate the acid gas stream into a hydrocarbon rich stream and a purified acid gas stream,'}a hydrogen sulfide selective separation unit in fluid communication with the hydrocarbon selective separation unit, the hydrogen sulfide selective separation unit operable to separate the purified acid gas stream to create the hydrogen sulfide rich stream and a hydrogen sulfide lean stream, the hydrogen sulfide rich stream having a concentration of hydrogen sulfide.2. The enrichment apparatus of claim 1 , further comprising:a carbon dioxide selective separation ...

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Номер записи: 92
08-09-2022 дата публикации

Gasification or Liquefaction of Coal Using a Metal Reactant Alloy Composition

Номер: US20220282345A1
Автор: Bishop Ian C., JR. Ronald G., Presswood
Принадлежит: Elemental Recycling, Inc.

This invention relates to a method and apparatus for gasifying or liquifying coal. In particular, the method comprises reacting a coal with a molten aluminum or aluminum alloy bath. The apparatus includes a reaction vessel for carrying out the reaction, as well as other equipment necessary for capturing and removing the reaction products. Further, the process can be used to cogenerate electricity using the excess heat generated by the process. 1. A reaction vessel for reacting coal particles with molten metal , the reaction vessel comprising:a reaction vessel wall;a refractory material lining an inside of the reaction vessel wall;a cooling plate attached to an outside of the reaction vessel wall, wherein the cooling plate forms a channel for a cooling fluid between the cooling plate and the reaction vessel wall;an aluminum feed line passing through to the reaction vessel wall;a coal injection line passing through the reaction vessel wall and having an outlet in the reaction vessel;a first collection line and a second collection line each passing through the reaction vessel wall at a lower portion of the reaction vessel; anda heat exchanger feed line passing through an upper portion of the reaction vessel wall.2. The reaction vessel of wherein the outlet of the coal injection line is positioned to introduce coal into the reaction vessel below an upper surface of the molten metal thereby mixing the coal into the molten metal such that the coal reacts with the molten metal to produce a liquefied product.3. The reaction vessel of wherein the liquefied product separates from the molten metal by settling to a bottom of the reaction vessel.4. The reaction vessel of wherein the first and section collection lines remove a liquefied product from the reaction vessel claim 1 , wherein a first component of a lighter density is removed using the first collection line claim 1 , and a second component of a heavier density is removed using the second collection line. This ...

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Номер записи: 93
26-05-2016 дата публикации

INTEGRATED HYDROCARBON DESULFURIZATION WITH OXIDATION OF DISULFIDES AND CONVERSION OF SO2 TO ELEMENTAL SULFUR

Номер: US20160145502A1
Автор: KOSEOGLU Omer Refa
Принадлежит:

A process to produce a sulfur-free hydrocarbon product stream from a liquid hydrocarbon disulfide product, e.g., of the Merox Process, includes subjecting the hydrocarbon disulfide to a catalytic oxidation step to produce SOwhich is separated from the remaining desulfurized hydrocarbons that form the clean sulfur-free hydrocarbon product stream; the SOis introduced into a Claus processing unit with the required stoichiometric amount of hydrogen sulfide (HS) gas to produce elemental sulfur. 2. The process of in which the caustic is selected from the group consisting of aqueous solutions of sodium hydroxide claim 1 , ammonia claim 1 , potassium hydroxide claim 1 , and combinations thereof.3. The process of which includes subjecting the HS to an oxidation reaction to convert a predetermined portion of the HS to sulfur dioxide in order to achieve a stoichiometric ratio of 2HS:SOto complete the sulfur-producing reaction:{'br': None, 'sub': 2', '2', '2, '2HS+SO→3S+2HO.'}4. The process of in which the hydrocarbon disulfide is oxidized in the presence of a catalyst.5. The process of in which the catalyst is selected from the group consisting of catalytic compositions comprising copper oxide in an amount ranging from 10 weight percent (wt %) to 50 wt % claim 4 , zinc oxide in an amount ranging from 5 wt % to less than 20 wt % claim 4 , and aluminum oxide in an amount ranging from 20 wt % to 70 wt % claim 4 , wherein said catalytic composition has an X-ray amorphous oxide phase claim 4 , and a formula CuxZnAlO claim 4 , wherein x ranges from 0 to 1 claim 4 , highly dispersed crystalline ZnO and CuO alone and said composition further comprises CeOin the form of particles ranging in diameter from 5 nm to 10 nm claim 4 , in an amount ranging from 0.1 wt % to 10 wt % of said catalytic composition claim 4 , and combinations thereof.6. The process of in which the catalyst composition comprises from 20 wt % to 45 wt % CuO claim 5 , from 10 wt % to less than 20 wt % ZnO claim 5 , and ...

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Номер записи: 94
26-05-2016 дата публикации

TREATMENT PROCESS FOR RECOVERY AND SEPARATION OF ELEMENTS FROM LIQUORS

Номер: US20160145715A1
Автор: ADAMS Michael David, Liddell Keith Stuart, Smith Lisa Anne
Принадлежит:

This invention provides a hydrometallurgical process for extracting one or more saleable products from a sulphate or chloride pregnant leach solution (PLS), or both. The products may be any one or more of the products selected from the group consisting of: precious metals including platinum group metals (PGMs), gold and silver, base metals, and rare metal elements, and metal cathodes, powders, salts or precipitates thereof; sulphur; hydrochloric acid (HCl); calcium; and silica. 1. A hydrometallurgical process for extracting one or more saleable products selected from the group consisting of:(a) precious metals (PMs) comprising platinum group metals (PGMs), gold, or silver; base metals;(b) rare metal elements;(c) metal cathodes, powders, salts or precipitates thereof;(d) sulfur;(e) hydrochloric acid (HCl);(f) calcium; and (i) providing to a reaction vessel the chloride or sulfate PLS;', '(ii) optionally, sorption of the chloride or sulfate PLS to a resin or sorbent to produce one or more solid residues whereby PMs are adsorbed and base metals are discharged in a solution;', (A) a solution comprising one or a combination of salts or acids of sulfide, hydrogen sulfide, thiosulfate, metabisulfite or sulfite, or', '(B) a gas comprising sulfur dioxide or hydrogen sulfide,', 'to produce a product slurry of a solid residue comprising elemental sulfur, metal sulfides and/or alloys and a discharge solution;, '(iii) subjecting the chloride PLS of step (i) and the chloride discharge solution from step (ii) to a reduction and sulfide precipitation step by addition of'}, '(iv) performing solid-liquid separation of the solid residue from step (iii) from the discharge solution by a solid-liquid separation means, at temperatures of between about 10 and 130° C.; and', (A) a sulfur removal step comprising sublimation of the solid residue at temperatures of between about 200 and 500° C., to produce a solid residue and a sulfur sublimate product;', '(B) optionally subjecting the solid ...

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Номер записи: 95
04-06-2015 дата публикации

Process for the high temperature selective absorption of hydrogen sulfide

Номер: US20150151241A1
Автор: James Edward Critchfield, Jingjun Zhou
Принадлежит: Shell Oil Co

A high temperature selective absorption process for treating a gas stream having concentrations of both hydrogen sulfide and carbon dioxide to yield a treated gas stream having a reduced hydrogen sulfide concentration. The high temperature selective absorption process uniquely utilizes a novel absorbent composition which enables the processing of the gas stream under difficult absorption conditions and provides for other features of the inventive absorption process.

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Номер записи: 96
04-06-2015 дата публикации

Sulphur Dioxide Treatment

Номер: US20150151245A1
Автор: Peter Frank CROSS
Принадлежит: FRANK CROSS Ltd

A process for removing sulphur dioxide from the gaseous effluent of a smelter furnace comprising the steps of: providing the gaseous effluent from a smelter; separating the sulphur dioxide from the gaseous effluent to provide concentrated sulphur dioxide and effluent for discharge into the atmosphere; mixing the concentrated sulphur dioxide with a fuel gas; heating the mixture such that the concentrated sulphur dioxide and fuel gas react to form a gaseous product mixture comprising sulphur and hydrogen sulphide; and removing the majority of preferably substantially all of the sulphur and hydrogen sulphide from the gaseous product mixture; wherein the remaining gaseous product mixture is incinerated before being vented into the atmosphere or is recycled into the smelter furnace.

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Номер записи: 97
07-05-2020 дата публикации

SULFUR PRODUCTION

Номер: US20200139338A1
Автор: Jaffrey Kamal
Принадлежит:

A system includes a first chamber, a second chamber, an ultraviolet light source and a microwave source. The first chamber includes an inlet. The second chamber is adjacent the first chamber and includes an outlet and a waveguide. The ultraviolet light source resides within the waveguide of the second chamber. Related apparatus, systems, techniques and articles are also described. 1. A system comprising:a first chamber including an inlet that allows an input feed to enter the first chamber, the input feed comprised essentially of hydrogen sulfide;a microwave source configured to radiate microwave energy into at least the first chamber;a second chamber in communication with the first chamber, the second chamber including an outlet and a waveguide; andan ultraviolet light source residing within the waveguide of the second chamber, the ultraviolet light source being configured to emit ultraviolet light to at least partially breakdown the hydrogen sulfide into hydrogen gas and elemental sulfur as the hydrogen sulfide flows through the second chamber.2. The system of claim 1 , wherein the microwave source is further configured to radiate the microwave energy into the waveguide of the second chamber such that the microwave energy contacts the ultraviolet light source claim 1 , and wherein the ultraviolet light source includes an internal gas that generates the ultraviolet light upon contact with the microwave energy.3. The system of claim 1 , wherein the waveguide includes an end configured such that the microwave energy forms a standing wave within the waveguide.4. The system of claim 1 , wherein the second chamber further includes:a first electrode configured to have a negative charge; anda second electrode configured to have a positive charge, the first electrode and the second electrode being external to the ultraviolet light source and internal to the waveguide.5. The system of claim 1 , further comprising:a tube assembly within the waveguide and containing the ...

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Номер записи: 98
07-05-2020 дата публикации

METHODS FOR TREATING SULFIDES IN GASEOUS STREAMS

Номер: US20200140298A1
Автор: Archer, III William Moseley
Принадлежит:

A method for removing hydrogen sulfide from a biogas, wherein the hydrogen sulfide is absorbed in an aqueous liquid to produce a cleaned gas having a reduced amount of hydrogen sulfide relative to the biogas. The aqueous liquid is subsequently treated by contacting with a sulfur dye or sulfurized vat dye in the presence of an oxidizer such as oxygen gas, to convert the sulfides in the aqueous liquid to a non-toxic, water-soluble, product. 1. A method of removing hydrogen sulfide from biogas and treating removed hydrogen sulfide , said method comprising:introducing the biogas to an aqueous absorption liquid to absorb at least a portion of the hydrogen sulfide in the liquid;harvesting any gas remaining, wherein the remaining gas has a concentration of hydrogen sulfide that is reduced relative the biogas;introducing at least one sulfur dye or sulfurized vat dye catalyst to the aqueous absorption liquid;introducing a gas comprising oxygen to oxidize sulfides in the aqueous absorption liquid to soluble sulfur-containing salts.2. The method of claim 1 , wherein the soluble sulfur-containing salts in the treated aqueous absorption liquid are separated from the sulfur dye or sulfurized vat dye.3. The method of claim 1 , wherein the sulfides are selected from the group consisting of hydrogen sulfide claim 1 , bisulfide ions claim 1 , sulfide ions claim 1 , polysulfide ions and mixtures thereof.4. The method of claim 1 , wherein said sulfur dye or sulfurized vat dye is selected from the group consisting of Sulfur Black 1 claim 1 , Leuco Sulfur Black 1 claim 1 , Solubilized Sulfur Black 1 claim 1 , and mixtures thereof.5. The method of claim 1 , wherein said sulfur dye or sulfurized vat dye is introduced into the aqueous absorption liquid as the Leuco (reduced) form of the dye.6. The method of claim 1 , wherein the sulfides comprise hydrogen sulfide.7. The method of claim 1 , wherein the aqueous absorption liquid has a pH that permits the absorption of hydrogen sulfide from ...

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Номер записи: 99
08-06-2017 дата публикации

Separating Carbon Dioxide and Hydrogen Sulfide from a Natural Gas Stream Using Co-Current Contacting Systems

Номер: US20170157553A1
Автор: Cullinane J. Tim, Mart Charles J., Northrop Paul Scott
Принадлежит:

Systems and methods for separating COand HS from a natural gas stream are provided herein. The system includes a first loop of co-current contacting systems configured to remove HS and COfrom a natural gas stream and a second loop of co-current contacting systems configured to remove the HS from the CO. 1. A system for separating HS and COfrom a natural gas stream , comprising:{'sub': 2', '2, 'claim-text': [{'sub': 2', '2', '2', '2, 'a first series of co-current contacting systems configured to remove the HS and the COfrom the natural gas stream by contacting the natural gas stream with a solvent stream, providing for incorporation of the HS and the COfrom the natural gas stream into the solvent stream, and;'}, {'sub': 2', '2, 'a second series of co-current contacting systems configured to remove the HS and the COfrom the solvent stream, wherein the solvent stream is recirculated to the first series of co-current contacting systems; and'}], 'a first loop of co-current contacting systems configured to remove HS and COfrom a natural gas stream, the first loop of co-current contacting systems including'}{'sub': 2', '2, 'claim-text': [{'sub': 2', '2', '2', '2', '2', '2', '2, 'a third series of co-current contacting systems configured to remove the HS from the COby contacting the HS and the COwith an HS-selective solvent stream, providing for incorporation of the HS into the HS-selective solvent stream, and'}, {'sub': 2', '2', '2, 'a fourth series of co-current contacting systems configured to remove the HS from the HS-selective solvent stream, wherein the HS-selective solvent stream is recirculated to the third series of co-current contacting systems;'}, 'wherein each of the co-current contacting systems includes', an annular support ring configured to maintain the mixer within the pipe,', 'a number of radial blades extending from the annular support ring and configured to allow a liquid stream to flow into the mixer, and', 'a central gas entry cone supported by the ...

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Номер записи: 100