Simulation test system for gas adsorption and desorption of large-scale coal

A simulation test system and adsorption and desorption technology, which are applied in the field of large-scale coal gas adsorption and desorption simulation test systems, can solve the problems such as the inability to reflect the coal gas desorption adsorption characteristics and differences in results, and achieve a simple advancement speed and simple experimental methods. Effect

Inactive Publication Date: 2013-02-27
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

However, the coal samples currently studied in laboratory experiments are mainly coal powder, and there are fundamental differences in scale and internal structure with the actual large-scale coal bodies (containing rich pore and fissure structures, located in mining-affected environments, etc.) Moreover, the coal wall gas in the mining space of the working face is under the infl

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  • Simulation test system for gas adsorption and desorption of large-scale coal

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[0016] In order to make the above objectives, features and advantages more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Such as figure 1 As shown, a large-scale coal gas adsorption and desorption simulation test system includes a large-scale cavity 1, a loading system 2, a gas supply system 4, a vacuum pump 14, a gas adsorption and desorption parameter monitoring system 3; the large-scale cavity 1 consists of one side The open cavity and the cover plate 12 are composed of a hollow bolt 18 arranged on the wall of the large-scale cavity 1, and the gas adsorption and desorption parameter monitoring system 3 includes a sensor 16 which is sealed into the large-scale cavity 1 through the hollow bolt 18, It is connected to the gas adsorption and desorption parameter monitoring system 3 placed outside the large-scale cavity 1; the loading system is sealed through ...

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Abstract

The invention provides a simulation test system for gas adsorption and desorption of large-scale coal. The simulation test system comprises a large-scale cavity, a loading system, a gas feeding system, a vacuum pump, a monitoring system of gas adsorption and desorption parameters, wherein the large-scale cavity is composed of a one-side open cavity and a cover plate; the wall of the large-scale cavity is provided with sensor screwed holes; the monitoring system of the gas adsorption and desorption parameters comprises a sensor which penetrates into the large-scale cavity through the sensor screwed holes and is connected with the monitoring system of the gas adsorption and desorption parameters disposed out of the large-scale cavity; the loading system hermetically passes through the cover plate and regulates stress environment of the coal in the large-scale cavity; the gas feeding system is communicated with the large-scale cavity through an air inlet pipe; and the vacuum pump is communicated with the large-scale cavity through the air inlet pipe. The test system can realize laboratory experiment study of the gas adsorption and desorption laws of the large-scale coal, and is reliable, economic and simple experimental means.

Description

technical field [0001] The invention relates to the technical field of coal mine equipment, in particular to a large-scale coal gas adsorption and desorption simulation test system. Background technique [0002] At present, the gas desorption and adsorption characteristics of coal samples are based on on-site sampling and then carried out with laboratory test equipment. However, the coal samples currently studied in laboratory experiments are mainly coal powder, and there are fundamental differences in scale and internal structure with the actual large-scale coal bodies (containing rich pore and fissure structures, located in mining-affected environments, etc.) Moreover, the coal wall gas in the mining space of the working face is under the influence of a certain external environment, and the gas gushes out to the outside world, and the gas desorption and adsorption characteristics tests carried out in the existing laboratories do not consider the influence of the external e...

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Application Information

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IPC IPC(8): G01N33/22
Inventor 王家臣赵洪宝闫保金杨胜利潘卫东栾合冰杨敬虎
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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