18-09-2014 дата публикации
Номер: US20140262836A1
A method for measuring the component and calorific value of goal gas. The method includes measuring a volume concentration of H(T) using a thermal conductivity detector (TCD), measuring a volume concentration of Ousing an electrochemical detector (ECD), measuring volume concentrations of CO, CO, CH, and CHin the coal gas, revising an interference of CHin CH, revising a measured volume concentration of H, and calculating the calorific value of the coal gas. 1. A method for measuring components and calorific value of coal gas , the method comprising the following steps:{'sub': 2', 'H2', '2, '1) measuring a volume concentration of H(T) using a thermal conductivity detector (TCD), measuring a volume concentration of Ousing an electrochemical detector (ECD);'}{'sub': 2', '4', 'n', 'm', 'CO', 'CO2', 'CH4', 'CnHm, '2) measuring volume concentrations of CO, CO, CH, and CHin the coal gas, represented by T, T, T, and T, respectively, using a non-dispersive infrared (NDIR) technology;'}{'sub': 4', 'n', 'm', 'CnHm', 'CnHm', 'CH4', 'CnHm', 'CH4', 'n', 'm', '4, '3) revising an interference of CHin CHusing an equation R=T−A×T, in which, A represents an undetermined coefficient, and Tand Trepresent the volume concentrations of CHand CHmeasured with the NDIR, respectively;'}{'sub': 2', 'H2', 'H2', 'CH4', 'CnHm', 'CO2', 'H2', '2', 'CH4', 'CO2', '4', '2', 'CnHm', 'n', 'm, '4) revising a measured volume concentration of Husing the equation R=T−a×(T+R)−b×T, in which, Trepresents the measured volume concentration of Husing the TCD, Tand Trepresent the volume concentrations of CHand COmeasured using the NDIR, respectively, Rrepresents a revised volume concentration of CH, and a and b represents undetermined coefficients; and'}{'sub': CO', 'H2', 'CH4', 'CnHm', 'CO', 'CH4', 'H2', 'CnHm, '5) calculating the calorific value of the coal gas using the equation Q=T×12.64+R×18.79+T×35.88+R×93.18, in which, Tand Trepresent measured volume concentrations, and Rand Rrepresent revised volume ...
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