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On-line total hydrocarbon concentration monitoring device of gas processing apparatus and method thereof

A technology of gas processing and monitoring devices, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., to achieve good technical effects

Active Publication Date: 2017-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is the cost and demand coordination of multi-point multi-condition monitoring and continuous monitoring of gas processing devices in the prior art, and a new online total hydrocarbon concentration monitoring device and method for gas processing devices is provided

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  • On-line total hydrocarbon concentration monitoring device of gas processing apparatus and method thereof

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Embodiment 1

[0013] An online total hydrocarbon concentration monitoring device and method for a gas processing device, such as figure 1 As shown, the online total hydrocarbon concentration monitoring system can quickly inject gas samples from three monitoring points (hereinafter referred to as 1# monitoring point, 2# monitoring point and 3# monitoring point) from the waste gas inlet, the intermediate process of dilution treatment, and the tail gas outlet to the Two FID detectors are used to detect the concentration of total hydrocarbons in the gas.

[0014] The online total hydrocarbon concentration monitoring system is connected to the external PLC through RS485, analog and switch IO signals. The information such as total hydrocarbon concentration, valve status and detector working status is transmitted to the external PLC (programmable logic controller) in real time, and the operation status of the online total hydrocarbon concentration monitoring system is remotely controlled through t...

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Abstract

The invention relates to an on-line total hydrocarbon concentration monitoring device of a gas processing apparatus and a method thereof, which mainly solve the coordination problems of safety and environmental protection requirement of multi-site multi-status monitoring as well as continuous monitoring and cost of the multi-detector. According to the invention, two detectors are employed, a first detector performs monitoring by keeping the total hydrocarbon concentration of gas at an inlet of the gas processing apparatus and monitors the total hydrocarbon concentration change of the gas; a second detector is used for monitoring total hydrocarbon concentration of the discharge gas of the gas processing apparatus, and is timely switched to an intermediate processing working section for monitoring, such as dilution of the gas processing apparatus, so that the problem can be better solved by the above technical scheme. The method and the apparatus can be used for on-line monitoring of total hydrocarbon concentration.

Description

technical field [0001] The invention relates to an online total hydrocarbon concentration monitoring device and method of a gas processing device. Background technique [0002] The gas treatment device used for environmental protection treatment of waste gas in petrochemical and other industries usually has an optimal range of total hydrocarbon concentration in the waste gas that can be treated (such as 1000~10000mg / m 3 ), when the total hydrocarbon concentration in the inlet exhaust gas exceeds the set value, problems such as a decrease in processing efficiency will occur, and even safety risks such as overheating and explosion will occur. Dilution and other means to reduce the concentration of total hydrocarbons in the inlet exhaust gas provide data support. At the same time, in order to ensure that the dilution and other measures do meet the design requirements, it is also necessary to monitor the concentration of total hydrocarbons in the diluted exhaust gas to effective...

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/626
Inventor 魏新明孙晓英肖寒邹兵肖安山姜素霞
Owner CHINA PETROLEUM & CHEM CORP
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