Coal spontaneous combustion symbolic gas detection cross interference suppression method

Abstract

The invention relates to a coal spontaneous combustion symbolic gas detection cross interference suppression method, and belongs to the technical field of coal mines. The method comprises the following steps: calculating concentration values of carbon monoxide, ethylene and acetylene gas measured by an electrochemical principle sensor through a cross interference suppression algorithm, eliminating measurement errors caused by cross interference to the sensor, and realizing accurate measurement of coal spontaneous combustion symbolic gas. According to the invention, the problem of cross interference of carbon monoxide, ethylene and acetylene gas in an electrochemical detection technology can be eliminated, the accuracy of detection of carbon monoxide, ethylene and acetylene gas is improved, the problems of misreport, missing report and the like of online monitoring are prevented, and the accuracy and reliability of scientific judgment and early warning of coal spontaneous ignition degree monitoring data are guaranteed; and the coal mine spontaneous ignition scientific pre-judgment level is greatly improved, the coal mine coal resource loss is reduced, and the safety production of a coal mine and the life safety of workers are guaranteed. The method has obvious practicability and innovativeness.

Description

technical field [0001] The invention belongs to the technical field of coal mines, and relates to a method for suppressing cross-interference detection of coal spontaneous combustion symbolic gas. Background technique [0002] The three stages of coal spontaneous combustion are affected by the type of coal. The choice of the symbolic gas in each stage is also different for different types of coal. However, they basically choose from three gases: carbon monoxide, ethylene, and acetylene. Therefore, it is necessary to select the three gases Monitoring is carried out to accurately judge the state of coal spontaneous combustion and ignition. At present, most coal mine enterprises use manual gas extraction or bundle pipe system to transport goaf gas to the ground monitoring room, and use chromatograph to quantitatively analyze the gas composition, but the resolution of chromatograph is 100ppm, and the gas concentration detection within 100ppm cannot be realized , It is not condu...

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Problems solved by technology

The existing electrochemical detection principle and technology realize the detection of carbon monoxide, ethylene, and acetylene gas with a resolution of 1ppm, but there is no research on the cross-interference problem of carbon monoxide, ethylene, and acetylene gas objectively existing in the electrochemical detection principle, and the detection data and the actual situation are relatively large. The difference reduces the accuracy and sensitivity of coal spontaneous combustion prediction and affects the scientificity of users' decision-making on fire prevention and extinguishing

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