On-line analyzer for hydrocarbons in air
A technology for hydrocarbons and analyzers, which is applied in the direction of chemical analysis, material analysis, and instrumentation using combustion. It can solve the problems of complex pipeline design and valve control technology, high technical requirements for operators, and easy flameout. The monitoring data is fast and accurate, real-time transmission and control, and the effect of simple structure
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[0017] The detection process of the present invention is: the sample gas enters the analyzer through the intake pipeline, and passes through the high-temperature reformer all the way. The high-temperature reformer is equipped with a conversion agent, and all the non-methane total hydrocarbons in the gas are destroyed under the condition of 150-250°C. Only the remaining methane is detected; the other path does not pass through the high-temperature reformer, and contains all the substances in the monitored gas, that is, total hydrocarbons. Through the timing switching of the solenoid valve, the two paths finally enter the hydrogen flame ionization detector for detection, respectively. The concentration of methane and total hydrocarbons, the values obtained from the two channels are subtracted to obtain non-methane total hydrocarbons. During the detection process, the gas (hydrogen) and assisted gas (zero air) directly enter the hydrogen flame ionization detector through the flow...
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