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System for detecting corrosive gas concentration in air

A corrosive gas and concentration technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of poor measurement stability and reliability, large measurement error, etc., to achieve good measurement stability and reliability, small measurement error, and easy sticking The effect of laminating machine production environment

Pending Publication Date: 2018-03-23
UPM CHINA
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  • Abstract
  • Description
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Problems solved by technology

However, the gas detection system in the prior art cannot target corrosive gases well, the measurement error is large, and the measurement stability and reliability are poor

Method used

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  • System for detecting corrosive gas concentration in air
  • System for detecting corrosive gas concentration in air

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Embodiment

[0060] The inventor adopts the system for detecting the concentration of corrosive gases in the air of the present invention, adopts the same suction pump suction speed Q=2.61L / min, and adopts different suction times T, aiming at the shield cover of the dryer section of the paper machine. Multiple detections to measure the concentration C of corrosive substances in the absorption liquid in the absorption container after the suction is completed 0 , The volume V of the absorption liquid in the absorption container after the suction is completed 0 , and finally convert the concentration C of corrosive gas in the air where the corrosive gas is sampled 1 .

[0061] It should be noted that the air temperature and air pressure basically determine the air molar volume V m . After calculation, the air molar volume V at the shroud of the dryer section of the paper machine m Generally 26.67L / mol.

[0062] In addition, the air humidity H at the corrosive gas sampling place is also c...

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Abstract

The invention relates to a system for detecting a corrosive gas concentration in air. The system comprises an absorbing container, a buffering container and an air pump which are connected successively. A certain amount of deionized water is pre-placed in the absorbing container. While the air pump is operated, the air is pumped from the corrosive gas sampling place by the air pump through the absorbing container and the buffering container, the deionized water in the absorbing container can absorb a corrosive gas in the pumped air, and the buffering container is used for preventing the waterfrom entering the air pump, wherein the corrosive gas concentration C1 in the air of the corrosive gas sampling place is calculated by the following formula: C1=C0*V0 / 71 / (T*Q / Vm). The system has the beneficial technical effects of pertinence detection of the corrosive gas, smaller measuring error, and better measuring stability and reliability.

Description

technical field [0001] The present invention relates to a system for detecting the concentration of corrosive gases in the air. Background technique [0002] A paper machine (also known as a "paper machine") is a machine that makes paper from pulp water suspensions that meet the requirements of papermaking through dehydration through filter screens, mechanical extrusion dehydration, and drying. [0003] There are often corrosive gases in the paper machine workshop, especially in the shield of the dryer section of the paper machine. [0004] In order to reduce the risk of paper machine corrosion, we need to detect the concentration of corrosive gases in the air of the paper machine workshop (especially in the shroud of the dryer section of the paper machine). [0005] In the prior art, there are some systems for detecting the concentration of a certain gas in the air. However, the gas detection system in the prior art cannot target the corrosive gas well, the measurement er...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 张洪敏王之琦
Owner UPM CHINA
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