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Controllable release device for monitoring and metering unorganized emission

A technology of fugitive emission and release device, which is applied in the measurement device, the structural details of gas analyzers, instruments, etc., can solve the problems of low calibration accuracy, neglect of gas release rate, etc., to achieve automatic adjustment, and simulation results are true and reliable. , the effect of increasing the types of substances

Pending Publication Date: 2022-03-15
NAT INST OF METROLOGY CHINA +1
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  • Claims
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Problems solved by technology

Although researchers in related fields have developed a variety of methods to ensure the measurement quality of known release points, including internal standard method and external standard method, most of the current methods often only calibrate the gas concentration and ignore the gas release rate. Calibration The accuracy is lower

Method used

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  • Controllable release device for monitoring and metering unorganized emission

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Embodiment

[0048] This embodiment provides a specific implementation of the controllable release device for fugitive emission monitoring and metering. The calibration device includes a standard gas passage, a vapor passage, a dilution gas / carrier gas passage, a purge gas passage, a gas discharge device, Control System.

[0049] Wherein the standard gas passage includes a number of standard gas branches connected in parallel, each standard gas branch is suitable for connecting with the standard gas source 1, each standard gas branch is provided with a first flow control device 4, each standard gas branch A first valve 21 is provided on the road, and the standard gas is the target pollutant with a purity of 99.9% or above, usually CO 2 、CH 4 and other common greenhouse gases, as well as NO, NO 2 , CO and other polluting gases, the first valve 21 can be set at a position close to the standard gas source 1 upstream of the first flow control device 4, and a regulating valve can be used to a...

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Abstract

The invention relates to the technical field of environmental monitoring, in particular to a controllable release device capable of controlling emission concentration and emission rate and used for monitoring and metering unorganized emission, which comprises a standard gas passage and a plurality of standard gas branches connected in parallel, a first flow control device is arranged on each standard gas branch, and a first valve is arranged on each standard gas branch; the gas emission equipment is suitable for being connected to the tail end of the standard gas branch and is used for realizing multiple emission modes of gas with determined front-end concentration and emission rate; the control system is electrically connected with the first flow control device and the first valve and used for controlling the gas flow in the standard gas branch, achieving automatic adjustment of the gas concentration and the emission rate, conducting quantitative control on the target gas concentration and the emission rate, achieving controllable release of the target gas and making the simulation result more real and reliable.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a controllable release device for fugitive emission monitoring and measurement. Background technique [0002] Unorganized emission of air pollutants refers to the pollutants discharged from emission sources without exhaust flue or the height of exhaust flue is less than 15m. It is difficult for enterprises to avoid unorganized emission or leakage of pollutants in the process during the production process. Compared with the organized emission sources of the flue, the fugitive emission sources have the characteristics of scattered locations, difficult positioning, low emission concentration, and difficult quantification, which makes it difficult to realize accurate monitoring and measurement of pollutant fugitive emission sources. [0003] At present, the quantification of fugitive emissions is mainly based on emission factors and model estimation methods, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0006G01N33/007G01N33/0072
Inventor 任歌张亮刘格格王池林鸿
Owner NAT INST OF METROLOGY CHINA
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