Traditional Chinese medicinal preparation for treating diabetes and its preparing process

The invention discloses a traditional Chinese medicine medicament for curing diabetic foot, and process for preparation. The invention comprises the following steps, 1) getting anoelica sinensis, and the anoelica sinensis is disintegrated into coarse powder in 5 to 20 orders, 4 to 10 times amount of 50 percent to 80 percent of grain alcohol is used as fluxing agent to percolate, and grain alcohole percolating liquid is gathered. 2) astragalus root, scrophularia root, cyathula root, red peony root, and honeysuckle flower are got to be added with water to decoct 2 times or 3 times, 1 hour or 2 hours each time, and which are combined with water to extract liquid, and the liquid stands for 24 hours to 48 hours, supernatant fluid is got to filter, and the filter liquor is compressed to concrete whose relative density is 1.20 to 1.25 (60 DEG C which is measured), the grain alcohol is added to lead alcohol concentration to reach 40 percent to 70 percent, and the concrete is refrigerated for 24 ...

Solar-powered VM circulating heat pump system

The invention discloses a solar-powered VM circulating heat pump system, which comprises a VM circulating heat pump system, a solar water heating system, a heat supply circuit and a cold energy supply circuit, wherein a heat source heat exchanger is arranged between a hot cylinder and a heat regenerator in the circulating heat pump system; the heat source heat exchanger and a water container in the solar water heating system form a heat exchange circulating system; and the energy transfer between the two systems is completed. When the system is used, solar can be used as driving energy to drive a VM circulating heat pump to work to cool or heat in order to meet an air conditioner cooling requirement. The solar is clean, safe and reliable, so energy shortage and environmental pollution areprevented. The system can be widely used in industrial, commercial and civil concentrated cooling and heating systems.

Denitration method for smoke

The invention provides a denitration method for smoke. The method comprises the following steps of: contacting the smoke with a denitrifying agent under a selective non-catalytic reducing condition of the smoke to obtain a reaction product of non-catalytic reducing denitration, wherein the molar ratio of the nitrogen in the denitrifying agent to the nitrogen in the smoke is 0.5-2:1; injecting disturbance medium into the reaction product of non-catalytic reducing denitration to obtain a mixture of the reaction product of non-catalytic reducing denitration and the disturbance medium; reducing the temperature of the reaction product of non-catalytic reducing denitration or the mixture of the reaction product of non-catalytic reducing denitration and the disturbance medium; and contacting the mixture of the reaction product of non-catalytic reducing denitration and the disturbance medium with a catalyst under a selective catalytic reducing condition of the smoke. The denitration method for ...

Polyvinylidene chloride (PVDC) emulsion and preparation method thereof as well as weather-proof barrier coating and application thereof

The invention relates to polyvinylidene chloride (PVDC) emulsion, a preparation method of the emulsion, a weather-proof barrier coating including the polyvinylidene chloride emulsion, and the application of the coating. The PVDC emulsion comprises the following components in parts by weight: 40-50 parts of deionized water, 30-40 parts of a vinylidene chloride monomer, 2-10 parts of an acrylic ester monomer, 5-20 parts of a monomer rich in polar groups, 0.1-5 parts of an initiator and 0.5-1.5 parts of an emulsifier, wherein the monomer rich in polar groups is one or more of 2, 2-dimethyl-4-pentene alcohol ester, dihydromyrcene alcohol ester and cellulose acetate; the monomer rich in polar groups is introduced in the raw material formula, so that the content of polar groups of the polymer in the PVDC emulsion can be increased, and the adhesion on the enhancement layer of the intermediate structure is improved.

Traditional Chinese medicine preparation for treating senile dementia and preparation method thereof

The present invention discloses a traditional Chinese medicinal preparation for curing senile dementia and a preparation method thereof. The traditional Chinese medicinal preparation consists of the following raw herbal materials: 4.5 to 5.5g of radix astragali, 2.7 to 3.3g of hemlock parsley, 1.8 to 2.2g of ginkgo, 2.7 to 3.3g of fructus zingiberis nigri, 2.7 to 3.3g of grassleaved sweetflag, 1.8 to 2.2g of schizandra sinensis, 4.5 to 5.5g of Chinese arborvitae seed, 1.8 to 2.2g of eucommia, 1.8 to 2.2g of milkwort and 9 to 11g of common mussel. The preparation method includes the following steps: (1) the fresh common mussel is cleaned, homogenized and filtered, thus obtaining homogenized filtrate which is subject to spray drying to obtain the common mussel powder; (2) six medicinal materials such as hemlock parsley and ginkgo, and the like, are ground and extracted by supercritical extraction technique; (3) three medicinal materials such as radix astragali, and the like, are decocted ...

Method for denitrating gas fume

The invention provides a method for denitrating gas fume. The method comprises the following steps of: contacting the gas fume with a denitrating agent under the condition of selective non catalyst reduction of the gas fume to obtain a first mixture; supplementing the denitrating agent and injecting a disturbing medium into the first mixture respectively to obtain a second mixture; and contactingthe second mixture with a catalyst under the condition of the selective catalyst reduction of the gas fume. The method can effectively solve the problem of high NOx content in the gas fume and completely denitrates the gas fume in the true sense by supplementing the denitrating agent and disturbing the denitrating agent and the gas fume between a selective non catalyst reduction process of the gas fume and another selective catalyst reduction process of the gas fume.

High-strength high-conductive chromium-copper and preparation thereof

The invention discloses a high-strength high-conductivity chromium-containing copper alloy and the prepariation thereof. The copper alloy includes 0.35wt% to 0.9wt% of Cr3C2. The copper alloy also includes some mount of Zr and rare earth. The preparation is mainly includes the process of master alloy smelting, and further includes the process of preparing Cu-Cr3C2-Zr-rare earth alloy by spray casting method, and the processing process after spray casting the alloy, and a alloy for vlsivery large scale integrated circuit lead frame is prepared by the preparation. The invention can realize good match of the hardness and the conductivity of the copper alloy, which embody high temperature stability, the copper alloy has high electrical property and hardness, the comprehensive performance has already reaches the idea main performance index of vlsivery large scale integrated circuit lead frame. The invention expands the selection direction of high-strength high-conductivity copper-based material ...

Method for hoisting ultrahigh superstructure block on ultra-large container ship

The invention discloses a method for hoisting an ultrahigh superstructure block on an ultra-large container ship, which is mainly used for hoisting the superstructure block with a complete structure of the ultra-large container ship, and aims at solving the problem that the hoisting capacity and the hoisting height of a gantry crane are limited through a reasonable hoisting method and reinforcing design. The problems of carrying interference and superelevation after the structure of the superstructure is complete are solved, and the hoisting safety of the superstructure on the premise that the structure of the superstructure is complete is ensured. The hoisting scheme comprises a hoisting ring on a cab deck, structural reinforcement, temporary reinforcement and a gantry crane steel wire rope. The problem of structural integrity of the superstructure can be solved, the dock period is shortened, high-altitude operation is reduced, and meanwhile the hoisting safety of the ultrahigh superstructure ...

Hoisting method for lashing bridge carrying

The invention relates to a hoisting method for lashing bridge carrying, and relates to the field of ship body hoisting processes for ship construction, a hanging bracket is mounted below a gantry crane, the hanging bracket comprises two parallel longitudinal hanging brackets and a plurality of parallel transverse hanging brackets, and the transverse hanging brackets are vertically arranged between the two parallel longitudinal hanging brackets; the longitudinal hanging bracket is longer than the transverse hanging bracket; hanging rings are respectively arranged on upper and lower surfaces of the longitudinal hanging bracket; the gantry crane is connected with the hanging ring above the hanging bracket; the binding bridge is connected to the hanging ring below the hanging bracket; a lashing bridge is hung below each of the two longitudinal hanging brackets, and the two lashing bridges are hung below the hanging brackets in parallel. By means of the hoisting method, two lashing bridges can ...

Smoke denitration method

The invention discloses a smoke denitration method comprising: under the condition of selective non-catalytic reduction reaction, causing smoke to contact with denitrifying agent to obtain a non-catalytic reduction denitration reaction product; replenishing denitrifying agent into the non-catalytic reduction denitration reaction product; and under the condition of selective non-catalytic reduction denitration reaction, causing the non-catalytic reduction denitration reaction product replenished with the denitrifying agent to contact with catalyst. The method of the invention can obviously improve the denitrifying rate; and compared with the single SCR technology, the invention greatly lowers the dosage of the catalyst so as to lower the cost.

A protect apart from roof beam for container ship transverse bulkhead carries on fast

The utility model relates to a protect apart from roof beam for container ship transverse bulkhead carries on fast for the quick lift -launch of the last transverse bulkhead of container ship. This is protected apart from the girder construction in including vertical H shaped steel, horizontal H shaped steel, checkered plate, guardrail and tip horse board, and two vertical H shaped steel are parallel to each other, are provided with the many horizontal H shaped steel that are parallel to each other between two vertical H shaped steel pipes, all are equipped with a pair on every vertical H shaped steel the guardrail vertical H shaped steel is equipped with with the frame upper berth that horizontal H shaped steel is constituteed the checkered plate, every the tip of vertical H shaped steel all is equipped with the tip horse board that is used for with transverse bulkhead deck welded fastening. The utility model discloses a guarantor saves the hoist and starts shipment the activity duration ...

Lead-free free-cutting manganese-containing graphite brass and preparation method thereof

The invention relates to a lead-free free-cutting manganese-containing graphite brass. The invention is characterized in that the lead-free free-cutting manganese-containing graphite brass is composed of the following chemical components in percentage by mass: 58-63% of copper, 0.8-7% of manganese, 0.1-1.0% of graphite, 0.1-1.3% of iron, 0.5% of nickel, at most 0.1% of all impurities and the balance of zinc. The preparation method comprises the following steps: preparing 58-63 wt% of electrolytic copper, 1-10 wt% of high-carbon manganese iron, 0.5 wt% of nickel and the balance of zinc (the content of all impurities is at most 1%), carrying out medium-frequency or line-frequency induction smelting in an atmospheric environment: completely melting the electrolytic copper, high-carbon manganese iron and nickel in a graphite crucible, cooling, adding the zinc, keeping the temperature for some time, casting into a rod, and carrying out annealing treatment by keeping the temperature at 700-1000 ...

Method for preparing chamigrenal from shizandra

The invention provides a method for preparing chamigrenal from shizandra, comprising the following steps: leaching shizandra medical materials through supercritical CO2 to obtain extract-shaped extractive, adsorbing by silicagel column, eluting by using petroleum ether, decompressing and concentrating, and then separating by ODS column chromatography, eluting by ethanol solution, and concentrating to obtain the final target product. Detected by efficient liquid chromatogram, the content of the main component is larger than 90%, and nuclear magnetic resonance technology is utilized for verification. The invention has reasonable design, compact operation steps and high purity quotient of the product, and can effectively avoid the oxidation or the thermal decomposition of effective components.

Rare earth copper material for heat pipe and preparation method of rare earth copper material

The invention belongs to the field of copper-based materials and preparation, and particularly relates to a rare earth copper material for a heat pipe and a preparation method of the rare earth copper material. Rare earth and cuprous oxide mixed powder is hydraulically formed and then added into copper liquid for refining. The rare earth oxide can be generated in situ in the copper liquid, particles are effectively prevented from agglomerating and growing due to the low diffusion rate, the particles are fine and high in dispersity, and the dispersion strengthening effect is further improved. In addition, by controlling the content of rare earth oxide particles, the fine, dispersed and low-content rare earth oxide can ensure that the influence on the electric conduction and heat conduction performance of the copper material is reduced to the minimum. When the rare earth copper material is used for processing a heat pipe shell, grain growth during sintering of the pipe shell can be effectively ...

Traditional Chinese medicinal preparation for treating diabetes and its preparing process

Preparation method of Ni/WC wear-resistant composite coating

The invention discloses a preparation method of a Ni/WC wear-resistant composite coating. The preparation method comprises the following specific steps: carrying out roughening treatment on a substrate; the roughened substrate is subjected to electric purification treatment; carrying out activating treatment on the substrate subjected to electric purification; carrying out pre-deposition treatment on the activated substrate; and carrying out subsequent nickel plating brushing treatment on the substrate subjected to the pre-deposition treatment. The preparation method of the wear-resistant coating is simple in step, controllable in process and low in equipment cost, and the composite coating is tightly combined with the substrate. Through the treatment means of roughening and pre-deposition, the Ni/WC composite coating with excellent and uniform wear resistance can be successfully obtained.

Esterification reagent and method for determining resin hydroxyl value

The invention relates to an esterification reagent for determining a resin hydroxyl value and a method for determining the resin hydroxyl value by use of the esterification reagent. The esterification reagent comprises an esterification reactant and a solvent, wherein the esterification reactant is isocyanate or sulfonyl isocyanate, and the solvent is a non-alcohol pyridine-free organic solvent. The method for determining the resin hydroxyl value comprises the steps of preparation of a hydrochloric acid standard solution, calibration of the concentration of the hydrochloric acid standard solution, calculation of the hydroxyl value of a resin sample, and the like. Active isocyanate or sulfonyl isocyanate serving as an esterification reactant and the hydroxyl of resin can perform a quantitative esterification reaction at room temperature, so that the method is suitable for determining the hydroxyl value of the hydroxyl-containing resin with deep color and high viscosity; moreover, a pyridine-free ...

Denitration method for smoke

The invention provides a denitration method for smoke. The method comprises the following steps of: contacting the smoke with a denitrifying agent under a selective non-catalytic reducing condition of the smoke to obtain a reaction product of non-catalytic reducing denitration, wherein the molar ratio of the nitrogen in the denitrifying agent to the nitrogen in the smoke is 0.5-2:1; injecting disturbance medium into the reaction product of non-catalytic reducing denitration to obtain a mixture of the reaction product of non-catalytic reducing denitration and the disturbance medium; reducing the temperature of the reaction product of non-catalytic reducing denitration or the mixture of the reaction product of non-catalytic reducing denitration and the disturbance medium; and contacting themixture of the reaction product of non-catalytic reducing denitration and the disturbance medium with a catalyst under a selective catalytic reducing condition of the smoke. The denitration method for smoke ...

Surfactant feeding device for strengthening phytoremediation of decabromodiphenyl ether pollution

The invention discloses a surfactant feeding device for strengthening phytoremediation of decabromodiphenyl ether pollution, and relates to the technical field of agricultural protection, the surfactant feeding device comprises a rack, a motor is fixed in the rack, a water pumping structure is fixed at one end of the motor, the surface of the water pumping structure is connected with a water pumping pipe and a water supply pipe, and the water supply pipe is connected with a water pump. A blocking plate is rotationally connected to the surface of the rack, a rotating column is fixed to the middle of the blocking plate, the water supply pipe is wound around the surface of the rotating column, a power gear is in transmission connection with the other end, opposite to the water pumping structure, of a motor, and a transmission box is clamped to the surface of the motor. The linkage gear can be separated from the belt gear and the power gear through the counter-acting force of the power gear ...

Structural hanging ring installed in narrow and small area and construction method of narrow and small area

The invention relates to a structural lifting ring installed in a narrow area of a ship body, the narrow area is a ship body section which is constructed in an inverted state and assembled in a normal state, the ship body section is a ship bow section, a B-type lifting ring, a special C-type lifting ring and a D-type lifting ring are arranged on the ship bow section, the special C-type lifting ring is a structural lifting ring, and the D-type lifting ring is a structural lifting ring. The structural hanging ring is in a hanging ring shape reserved on a narrow area forming plate, the reserved hanging ring and a structural grillage are integrally manufactured during structural nesting, inverted construction of a ship bow section is completed, and turning over of the ship bow section is completed through combination of a B-type hanging ring, a special C-type hanging ring, a D-type hanging ring and a lifting hook. The structural hanging rings are cut off after the ship body sections turn over ...

Hoisting method for container ship lashing bridge

The invention discloses a hoisting method for a container ship lashing bridge, which comprises the following steps of: dividing a lashing bridge block into a plurality of lashing bridge segments for segmented construction, and installing a turnover main hook hoisting ring and a turnover auxiliary hook hoisting ring on the lashing bridge segments to complete the lashing bridge assembly and the hoisting of the lashing bridge block. According to the method, the turnover main hook hanging ring is arranged at the upper end of the binding bridge stand column, and the turnover auxiliary hook hanging ring is arranged at the lower end of the binding bridge stand column, so that turnover assembly and carrying installation of the binding bridge are achieved, meanwhile, the work of repairing paint of a platform plate component when the turnover main hook hanging ring is dismantled is avoided, the construction period is shortened, and meanwhile the construction risk is reduced.

Traditional Chinese medicine for senile dementia and preparation method thereof

The invention discloses a traditional Chinese medicine for senile dementia and a preparation method thereof. The traditional Chinese medicine comprises the following raw medicinal materials: 2g of astragalus, 3g of szechuan lovage rhizome, 2g of ginkgo seed, 3g of sharpleaf galangal fruit, 3g of grassleaf sweelflag rhizome, 2g of schizandra chinensis, 5g of shelled cedar seed, 2g of himalayan teasel root, 2g of polygala root and 2g of desertliving cistanche. The method comprises the following steps of: (1) crushing four medicinal materials such as ginkgo seed and the like and performing supercritical extraction to obtain extract; (2) decocting the astragalus in water twice, and mixing, filtering and concentrating the water extract for later use; (3) decocting three medicinal materials such as himalayan teasel root and the like in water twice, mixing, filtering and concentrating the water extract, precipitating the water extract with alcohol, and standing, filtering and concentrating the ...

Atomization injection device

The invention discloses an atomization injection device, which comprises an outer pipe injection element and an inner pipe injection element, wherein the outer pipe injection element is provided with a first fluid inlet and a first fluid outlet; the inner pipe injection element is provided with a second fluid inlet and a second fluid outlet; at least a main body section of the inner pipe injection element is inserted in the output pipe injection element; the outer wall surface of the main body section and the inner wall surface of the outer pipe injection element are spaced to form a first flat section, a first diameter reduction section and a first contraction section, wherein the first flat section, the first diameter reduction section and the first contraction section are successively arranged along a fluid flowing direction; the first flat section is communicated with the first fluid inlet; at least one part of the first contraction section is positioned between the outer wall surface ...

Carrying and hoisting method for ultra-large container ship windshield block

The invention discloses a carrying and hoisting method for an ultra-large container ship windshield block. The carrying and hoisting method comprises the following steps that the windshield block is assembled; two hydraulic vehicles are placed on a deck of a bow floor of the ship body in advance; a lifting hook of a gantry crane is connected with the block carrying lifting ring, the gantry crane is started to stretch the hook, and the windshield block is hoisted and carried to the target position; after the windshield block is carried in place, the block carrying hanging rings are dismantled through hydraulic vehicles on the first floor deck and the dock bottom, the hanging ring positions are polished after dismantling, and paint is repaired. Only one circle of the lower opening of the windshield block is reinforced, and the large opening area of the tail part is not reinforced, so that waste of reinforcement is avoided; and the hydraulic vehicle is arranged on the first floor deck in advance ...

Selective catalytic reduction denitration method of flue gas

The invention provides a selective catalytic reduction (SCR) denitration method of flue gas. In the method, under a condition of catalytic reduction denitration of the flue gas, a mixture of a denitrfying agent and the flue gas is contacted with a catalyst. The method is characterized in that before the mixture of the denitrfying agent and the flue gas is contacted with the catalyst, a disturbance medium is injected into the mixture of the denitrfying agent and the flue gas for disturbing the mixture of the denitrfying agent and the flue gas. The SCR denitration method of the flue gas provided by the invention can effectively remove a nitrogen oxide from the flue gas and effectively prevent the problems of ammonia leakage and premature deactivation caused by uneven distribution of ammonia.

Nano chromium carbide ferrofluid and preparation method thereof

The invention relates to a nano chromium carbide ferrofluid and a preparation method thereof. High-energy ball milling nano magnetic chromium carbide with the particle size between 40nm and 70nm is used as magnetic particles in the ferrofluid, the precursor is prepared through an aqueous solution batching method, and nano chromium carbide is prepared through a direct carbonization method of chromium oxides; nano magnetic chromium carbide is prepared after high-energy ball milling, nano magnetic chromium carbide particles are pre-dispersed in a base solution and subjected to surface modification to obtain the nano chromium carbide ferrofluid. According to the nano chromium carbide ferrofluid and the preparation method thereof, the nano chromium carbide particle size is between 40nm and 70nm, aggregation is not serious, ferromagnetism is provided after high-energy ball milling, the saturated magnetization is 26.04 emu/g, the saturated magnetic field intensity is 4800 Oe, the nano chromium ...

Traditional Chinese medicine preparation for treating senile dementia and preparation method thereof

The present invention discloses a traditional Chinese medicinal preparation for curing senile dementia and a preparation method thereof. The traditional Chinese medicinal preparation consists of the following raw herbal materials: 4.5 to 5.5g of radix astragali, 2.7 to 3.3g of hemlock parsley, 1.8 to 2.2g of ginkgo, 2.7 to 3.3g of fructus zingiberis nigri, 2.7 to 3.3g of grassleaved sweetflag, 1.8 to 2.2g of schizandra sinensis, 4.5 to 5.5g of Chinese arborvitae seed, 1.8 to 2.2g of eucommia, 1.8 to 2.2g of milkwort and 9 to 11g of common mussel. The preparation method includes the following steps: (1) the fresh common mussel is cleaned, homogenized and filtered, thus obtaining homogenized filtrate which is subject to spray drying to obtain the common mussel powder; (2) six medicinal materials such as hemlock parsley and ginkgo, and the like, are ground and extracted by supercritical extraction technique; (3) three medicinal materials such as radix astragali, and the like, are decocted ...

Nano vanadium carbide ferrofluid and preparation method thereof

The invention relates to a nano vanadium carbide ferrofluid and a preparation method thereof. High-energy ball milling nano magnetic vanadium carbide with the particle size between 30nm and 60nm is used as magnetic particles in the ferrofluid, the precursor is prepared through an aqueous solution batching method, and nano vanadium carbide is prepared through a direct carbonization method of vanadium oxides; nano magnetic vanadium carbide is prepared after high-energy ball milling, nano magnetic vanadium carbide particles are pre-dispersed in a base solution and subjected to surface modification to obtain the nano vanadium carbide ferrofluid. According to the nano vanadium carbide ferrofluid and the preparation method thereof, the nano vanadium carbide particle size is between 30nm and 60nm, aggregation is not serious, ferromagnetism is provided after high-energy ball milling, the saturated magnetization is 48.02 emu/g, the saturated magnetic field intensity is 4000 Oe, the nano vanadium ...

Traditional Chinese medicine for senile dementia and preparation method thereof

The invention discloses a traditional Chinese medicine for senile dementia and a preparation method thereof. The traditional Chinese medicine comprises the following raw medicinal materials: 2g of astragalus, 3g of szechuan lovage rhizome, 2g of ginkgo seed, 3g of sharpleaf galangal fruit, 3g of grassleaf sweelflag rhizome, 2g of schizandra chinensis, 5g of shelled cedar seed, 2g of himalayan teasel root, 2g of polygala root and 2g of desertliving cistanche. The method comprises the following steps of: (1) crushing four medicinal materials such as ginkgo seed and the like and performing supercritical extraction to obtain extract; (2) decocting the astragalus in water twice, and mixing, filtering and concentrating the water extract for later use; (3) decocting three medicinal materials such as himalayan teasel root and the like in water twice, mixing, filtering and concentrating the water extract, precipitating the water extract with alcohol, and standing, filtering and concentrating the ...

Micro rare earth oxide reinforced oxygen-free copper material and preparation method thereof

The invention belongs to the field of oxygen-free copper materials and preparation, and particularly relates to a trace rare earth oxide reinforced oxygen-free copper material and a preparation method thereof. In the preparation process of the method, a capillary blowing device is adopted to ensure that the nano rare earth oxide blown into the copper liquid is uniformly dispersed and distributed in the copper liquid, so that the nano rare earth oxide dispersion strengthened oxygen-free copper material is obtained. And the content of the nano rare earth oxide is controlled between 0.02% and 0.05%, the room-temperature and high-temperature performance of the oxygen-free copper is enhanced, and then the problems of surface defects and grain growth of the oxygen-free copper material during shaping processing and heat treatment are solved.

Solar-powered VM circulating heat pump system

The invention discloses a solar-powered VM circulating heat pump system, which comprises a VM circulating heat pump system, a solar water heating system, a heat supply circuit and a cold energy supply circuit, wherein a heat source heat exchanger is arranged between a hot cylinder and a heat regenerator in the circulating heat pump system; the heat source heat exchanger and a water container in the solar water heating system form a heat exchange circulating system; and the energy transfer between the two systems is completed. When the system is used, solar can be used as driving energy to drive a VM circulating heat pump to work to cool or heat in order to meet an air conditioner cooling requirement. The solar is clean, safe and reliable, so energy shortage and environmental pollution are prevented. The system can be widely used in industrial, commercial and civil concentrated cooling and heating systems.

Preparation method of nano tungsten-rhenium pre-alloyed powder

The invention discloses a preparation method of nano tungsten-rhenium pre-alloyed powder. The preparation method comprises the following steps: 1, respectively adding ammonium paratungstate, ammonium rhenate and an organic carbon source into a ball milling tank according to a certain proportion; 2, carrying out ball-milling mixing according to a certain ball-to-material ratio and ball-milling parameters; 3, sieving the powder obtained by ball milling; and 4, the composite powder is subjected to carbon-assisted hydrogen reduction, and the nanometer spherical tungsten-rhenium pre-alloyed powder is prepared. The alloy powder prepared through the method is high in sintering activity and uniform in size and component, and the tungsten-rhenium pre-alloy powder reaches the nanoscale.

Method for denitrating gas fume

Temporary protective coating for surface of nuclear fuel rod and preparation method of temporary protective coating

The invention belongs to the technical field of fine chemical engineering, and relates to a temporary protective coating, in particular to a temporary protective coating for the surface of a nuclear fuel rod and a preparation method of the temporary protective coating. Comprising the following raw material components: acrylic acid-2-ethylhexyl acrylate, methyl methacrylate, acrylic acid, alkylphenol polyoxyethylene ether, lauryl sodium sulfate, ammonium persulfate, sodium bicarbonate, ammonia water, deionized water, dimethylethanolamine, quartz sand and the like. The developed coating has excellent scratch resistance, so that the surface of the nuclear fuel rod can be prevented from being in direct contact with a spring piece and a bulge on a spacer grid to the greatest extent in the assembly process, and the zero-damage target of the nuclear fuel rod is achieved. The water-soluble lubricating oil has excellent water solubility, can be directly cleaned with hot water after being assembled ...

Method for denitrating gas fume

The invention provides a method for denitrating gas fume. The method comprises the following steps of: contacting the gas fume with a denitrating agent under the condition of selective non catalyst reduction of the gas fume to obtain a first mixture; reducing the temperature of the first mixture; and contacting the first mixture with a catalyst under the condition of the selective catalyst reduction of the gas fume. The method for denitrating the gas fume reduces the temperature of the first mixture before the first mixture enters a catalyst bed layer so as to make the temperature of the mixture of the gas fume entering the catalyst bed layer and the denitrating agent meet the requirements for SCR under the condition of not increasing the space occupied by gas fume denitrating equipment on the one hand and make full use of heat in the gas fume on the other hand. The method for denitrating the gas fume has the denitration efficiency of over 65 percent.

Open cut tunnel full-prefabricated structure construction method

The invention relates to a construction method for an open cut tunnel full-prefabricated structure. The construction method comprises the four steps of prefabricated part formwork design and construction, single-ring prefabricated tunnel stage pouring, short line method matched pouring and field installation. According to the construction method for the fully-prefabricated structure of the open-cut tunnel, the fully-prefabricated structure of the open-cut tunnel is adopted for construction, and pollution such as dust, noise and lamplight can be reduced; components are prefabricated in a factory in a centralized mode, automatic equipment can be fully adopted, labor force is saved, labor intensity is reduced, labor productivity is improved, and construction quality is easy to guarantee. Component manufacturing is not affected by seasons, component prefabrication and on-site construction can be conducted at the same time, the construction speed is greatly increased, and the construction period ...

A indoor set system for intelligent house and base thereof

The utility model discloses an indoor set system for intelligent house and base thereof, this base includes: a controller and a WAN mouth of being connected with the controller, the 2nd WAN mouth, WIFI insert module, power module, detection module, display module, infrared module, light intensity sensor, 485 interface module and/or 433 interface module, intercommunication module and the module of seeking help. The utility model discloses still construct an indoor set system that is used for intelligent house, this indoor set system includes mobile terminal and base. Implement the technical scheme of the utility model, base in the indoor set system can be convenient the well accuse ware of conduct intelligence house, the smart machine of supervisory control family has realized that the control of intelligent house unifies. In addition, resident family's family need not to set up wireless router, and moreover, the resident family need not to switch wireless network just can go up community ...

Marine paint airless spray painting agitator support

The utility model relates to a marine paint airless spray painting agitator support, this support include base and workstation, connect through the supporting leg between base and the workstation, the workstation comprises horizontal angle steel and vertical angle steel, is equipped with agitator clamping mechanism on the operating surface of workstation, and this agitator clamping mechanism is including fixing backup pad, chuck and the setting adjustable bolt on the chuck on vertical angle steel, the chuck includes " C " type channel -section steel clamp splice in the backup pad of two relative settings, the agitator holding tank is constituteed to two " C " type channel -section steel clamp splices. The utility model discloses at marine paint airless spray painting operation in -process, can satisfy not shipmate type and use, can last, firm, safe provide good support for the agitator, reduced workman's activity duration, improve painting effect, reduction shipbuilding cost.

Lead-free free-cutting graphite brass and preparation method thereof

The invention discloses lead-free free-cutting graphite brass and a preparation method thereof. The lead-free free-cutting graphite brass comprises the following components in percentage by weight: 57-61% of copper, 4.5-18.5% of iron, 0.2-0.5% of graphite, 0.1-0.3% of silicon, less than 0.08% of manganese, less than 0.03% of phosphorus and the balance of zinc. The preparation method comprises the following steps of: according to the proportion of 57-61wt% of electrolytic copper, 5-20wt% of cast iron and the balance of electrolytic zinc, firstly putting the electrolytic copper and the cast iron in an intermediate-frequency or power-frequency induction furnace, putting the cast iron at the bottom part of a crucible, using charcoal as a covering agent, reducing the temperature of the furnace after all the components are dissolved; adding the electrolytic zinc, mixing uniformly after all the materials in the furnace are dissolved, casting into bars, and carrying out graphitization annealing ...

Smoke denitration method

The invention discloses a smoke denitration method comprising: under the condition of selective non-catalytic reduction reaction, causing smoke to contact with denitrifying agent to obtain a non-catalytic reduction denitration reaction product; replenishing denitrifying agent into the non-catalytic reduction denitration reaction product; and under the condition of selective non-catalytic reduction denitration reaction, causing the non-catalytic reduction denitration reaction product replenished with the denitrifying agent to contact with catalyst. The method of the invention can obviously improve the denitrifying rate; and compared with the single SCR technology, the invention greatly lowers the dosage of the catalyst so as to lower the cost.