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Gas absorption and desorption experimental device with controllable coal sample moisture content and experimental method thereof

A technology of adsorption, desorption, and experimental equipment, which is applied in the field of gas experiments, can solve problems such as the influence of difficult gas adsorption and desorption laws, and achieve the effects of controlling coal and gas outburst disasters, simple operation steps, and effective gas drainage

Inactive Publication Date: 2016-07-06
CHONGQING UNIV
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Problems solved by technology

[0007] At the same time, the present invention also provides an experimental method for gas adsorption and desorption with controllable moisture content in coal samples, which solves the problem that it is difficult to truly study the influence of moisture content in coal on the law of gas adsorption and desorption under experimental conditions

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  • Gas absorption and desorption experimental device with controllable coal sample moisture content and experimental method thereof

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 As shown, the gas adsorption and desorption experimental device with controllable moisture content of coal samples includes an air charging system, a vacuum degassing system, a constant temperature system, a gas adsorption and desorption measurement system, and a coal sample water injection system.

[0032] The inflation system includes a high-pressure gas cylinder 1 and a pressure reducing valve 3. The high-pressure gas cylinder valve 2 on the high-pressure gas cylinder 1 is connected to the air inlet of the pressure relief valve 3. The inflation system is used to provide different pressure test gases.

[0033]The vacuum degassing system includes a vacuum pump 27, a vacuum tube connected to the vacuum pump 27, a vacuum sensor 26, a high-precision pressure gauge I25 and a vacuum valve 24. The air outlet of the...

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Abstract

The invention discloses a gas absorption and desorption experimental device with controllable coal sample moisture content. The experimental device comprises an inflation system, a vacuum degassing system, a constant temperature system, a gas absorption and desorption measuring system and a coal sample water injection system. Meanwhile, the invention also discloses a gas absorption and desorption experimental method with controllable coal sample moisture content. According to the device and method, a change rule of moisture content change on gas absorption and desorption performance influence of coal is researched by changing the moisture content of the coal sample through the coal sample water injection system, the change rule of the coal gas absorption and desorption performance before and after taking coal seam water injection and hydraulic cutting measures can be well reflected, the device and method contribute to treating coal and gas outburst disasters occurring in mines and effectively performing gas extraction, the device is simple in structure, the operating method is simple, the operating steps are simple and convenient, and the using effect is good.

Description

technical field [0001] The invention belongs to the technical field of gas experiments, in particular to a laboratory gas adsorption and desorption experimental device with controllable water content and an experimental method thereof. Background technique [0002] In 2014, my country's coal output reached 3.87 billion tons, nearly half of the world's output. Coal accounts for about 70% of my country's primary energy consumption structure, and it is expected to decrease to 50% in 2050. With the increase of mining depth, some shallow mining mines gradually carry out deep mining, and non-outstanding mines become outburst mines. Although after decades of exploration, my country has made certain achievements in the control of mine gas disasters, but mine gas Accidents still happen. On February 12, 2015, coal and gas outburst occurred in a coal mine of Yangquan Coal Industry Group, Shanxi Province, causing 3 deaths; Four people were killed; on October 9, 2015, a partial gas exp...

Claims

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Application Information

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IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 梁运培胡千庭陈结李波刘盛东王晗向磊
Owner CHONGQING UNIV
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