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Method for analyzing carbon monoxide gas in coal under anaerobic condition

A carbon monoxide and gas analysis technology, applied in the direction of analyzing materials, material separation, measuring devices, etc.

Inactive Publication Date: 2014-04-02
四川省煤炭产业集团有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it cannot completely and truly reflect whether coal is associated with carbon monoxide gas and its content

Method used

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  • Method for analyzing carbon monoxide gas in coal under anaerobic condition

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Embodiment Construction

[0021] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0022] The method for analyzing carbon monoxide gas in coal under anaerobic conditions comprises the following steps: firstly, the coal is taken out from a coal well, and the coal is made into a block coal sample, and the size of the block coal sample includes a coal block of 2 × 2 × 3 cm; Put the coal sample into the crushing chamber 14, cover the crushing chamber cover 11, and then introduce an inert gas into the crushing chamber 14. The purpose of introducing the inert gas is to discharge the air in the crushing chamber 14 and prevent the coal from being crushed during the crushing process. The gas reacts with oxygen to make the detection result more accurate; then the motor 4 drives the crushing chamber 14 to vibrate up and down, and the crushing rotor crushes the coal sample in the crushing chamber 14 to the degree of coal powder, making the coal The surface area...

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Abstract

The invention discloses a method for analyzing carbon monoxide gas in coal under an anaerobic condition. The method comprises the following steps: firstly, getting coal out of a coal mine and making the coal to a block coal sample; placing the block coal sample in a crushing cavity, covering the crushing cavity with a crushing cavity cover and then introducing inert gas to the crushing cavity; driving the crushing cavity to vibrate up and down through a motor so as to crush the coal sample in the crushing cavity; and at last, pumping the gas out of the crushing cavity through an air pump and sending the gas to a chromatographic instrument for analysis. By utilizing the method, whether associated carbon monoxide exists in the coal and the content of the carbon monoxide can be completely and truly reflected; and the method is simple in technology and high in detection accuracy.

Description

technical field [0001] The invention relates to a gas analysis method, more specifically, the invention mainly relates to a method for analyzing carbon monoxide gas in coal under anaerobic conditions. Background technique [0002] At present, the commonly used early prediction methods of coal spontaneous combustion fire include index gas analysis method, temperature measurement method, tracer gas method and so on. The index gas analysis method is the most widely used method, which is to measure a series of index gases that reflect the degree of coal oxidation and combustion, such as carbon monoxide, carbon dioxide, ethane, ethylene, acetylene, etc. As the coal temperature rises, its production will change significantly. Therefore, at present, the change of index gas production is usually used for early prediction of coal seam fires in my country. "Coal Mine Safety Regulations" stipulates that the maximum allowable concentration of carbon monoxide in mine air is 0.0024% (24pp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 蒋志刚伍厚荣王寿全吕文玉陈曦余玉江
Owner 四川省煤炭产业集团有限责任公司