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Combustible gas concentration detection method and detection device

A technology of gas concentration and detection method, which is applied in measurement devices, analysis gas mixtures, instruments, etc., can solve the problems of weak environmental adaptability, harsh environment, and reduced measurement accuracy, and achieves strong environmental adaptability, strong anti-interference ability, The effect of high measurement accuracy

Inactive Publication Date: 2017-02-22
李智
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during use, the temperature in the flue is high, the environment is harsh, and the purification is difficult, which leads to problems such as fragile infrared combustible gas detectors, weak environmental adaptability, and reduced measurement accuracy.

Method used

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  • Combustible gas concentration detection method and detection device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In step S1, a part of the flue gas in the flue is stabilized to form the flue gas to be detected.

[0023] In step S2, the catalytic promoter gas is stabilized, and the stabilized catalytic promoter gas is mixed into the flue gas to be detected, and the gas flow ratio of the catalytic promoter gas to the flue gas to be detected is 1:1. A gas sample to be tested is obtained, and the oxygen content in the gas sample to be tested is greater than 5%, preferably 10%. Wherein, the catalytic promoter gas is air.

[0024] In step S3, the combustible gas sensor is used to detect the gas sample to be measured to obtain the combustible gas concentration value.

Embodiment 2

[0026] In step S1, a part of the flue gas in the flue is stabilized to form the flue gas to be detected.

[0027] In step S2, the catalytic promoter gas is stabilized, and the stabilized catalytic promoter gas is mixed into the flue gas to be detected, and the gas flow ratio of the catalytic promoter gas to the flue gas to be detected is 1:3. A gas sample to be tested is obtained, and the oxygen content in the gas sample to be tested is greater than 5%, preferably 10%. Wherein, the catalytic promoter gas is oxygen.

[0028] In step S3, the combustible gas sensor is used to detect the gas sample to be measured to obtain the combustible gas concentration value.

[0029] The detection device for combustible gas concentration includes a flue gas delivery device to be detected, a catalyst-promoting gas delivery device, a combustible gas sensor and a proportional mixer. The flue gas conveying device to be tested and the catalyst-promoting gas conveying device are respectively conn...

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Abstract

The present invention provides a combustible gas concentration detection method and a detection device. The device comprises a combustible gas sensor and a proportional mixer. The proportional mixer and the combustible gas sensor are connected together. A to-be-tested gas sample is delivered to the combustible gas sensor. To-be-tested flue gases are mixed with a co-catalytic gas to obtain the to-be-tested gas sample. The to-be-tested gas sample is detected by the combustible gas sensor, and then the concentration value of combustible gases is obtained. According to the technical scheme of the invention, the combustible gas concentration detection method and the detection device are especially applicable to flues during the industrial production process. The method and the device have the advantages of low cost, stable performance, strong environmental adaptation capability and the like. During the measurement in a flue, the above combustible gas concentration detection device is better in long-term stability, higher in measuring accuracy and stronger in anti-interference ability compared with an infrared combustible gas detector.

Description

technical field [0001] The invention relates to the technical field of combustible gas concentration measurement or detection devices and methods, in particular to a detection method and detection device for detecting the concentration of combustible gas in a flue. Background technique [0002] In order to ensure production safety in industrial production, it is necessary to detect the concentration of combustible gas in the flue gas. Those skilled in the art use infrared combustible gas detectors for combustible gas detection of flue gas. However, during use, the temperature in the flue is high, the environment is harsh, and the purification is difficult, which leads to problems such as fragile infrared combustible gas detectors, weak environmental adaptability, and reduced measurement accuracy. Contents of the invention [0003] In view of the above-mentioned defects and problems of the prior art, the purpose of the embodiment of the present invention is to provide a de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0062G01N33/0004
Inventor 李智简淼夫
Owner 李智