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

Inactive Publication Date: 2012-08-01
HEBEI SAILHERO ENVIRONMENTAL PROTECTION HIGH TECH
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Problems solved by technology

[0004] The monitoring of hydrocarbons generally adopts the classic chromatographic method, which requires complex pipeline design and valve control technology. The imp

Method used

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  • On-line analyzer for hydrocarbons in air

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Embodiment Construction

[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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Abstract

The invention relates to an on-line analyzer for hydrocarbons in air, which belongs to the technical field of air monitoring equipment, and is used for monitoring organic matters of environmental gas. According to the technical scheme, the analyzer consists of a sample introduction component, a power providing component, a high temperature converter component and a detector component, wherein sample gas, zero gas or standard gas is switched by a valve of the sample introduction component and enters a high temperature converter, the gas is divided into two paths, one path is converted into methane by the high temperature converter, the other path is still the sample gas, and the two kinds of gas is subjected to hydrogen flame ionization, so that the content of the methane and the content of total hydrocarbons are obtained, the content of non-methane total hydrocarbons is obtained by subtracting the two values, and the organic matters in the gas are quickly detected in real time. By the analyzer, the hydrocarbons in the environmental gas can be monitored in real time on line, and chromatographic column selection and a complicated valve control technology in other chromatographic on-line hydrocarbon analyzers are eliminated; and the analyzer has the advantages of simple structure, long operating period, quick and accurate monitoring data, environment friendliness and the like.

Description

technical field [0001] The invention relates to an automatic monitoring device for ambient air, greenhouse gas, and air in places such as landfills, chemical industry parks, and garbage incineration, and belongs to the technical field of ambient air monitoring equipment. Background technique [0002] With the acceleration of the industrialization process, the discharge of various man-made organic matter is becoming more and more serious, which directly affects the health of the broad masses of the people. The monitoring of ambient air has been limited to SO 2 , NOx, PM 10 and other conventional parameters, while the monitoring of hydrocarbons in the atmosphere has been blank. Hydrocarbons are volatile organic compounds. Volatile organic compounds can have smell, taste, and irritation, and some compounds are genotoxic and can easily cause harm to the human body. . Relevant studies have shown that volatile organic compounds can cause imbalances in the body's immune level, af...

Claims

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Application Information

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IPC IPC(8): G01N31/12G01N35/10
Inventor 崔延青马越超钮江浩王强王春迎王丽轻唐溢郑雷玉
Owner HEBEI SAILHERO ENVIRONMENTAL PROTECTION HIGH TECH
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