High-low-temperature high-pressure adsorption and desorption testing device and method

A high-pressure adsorption and test device technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of complex operation, low experimental efficiency, and inability to adsorption and desorption experiments.

Active Publication Date: 2016-05-18
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0004] At present, the published patent documents "High-pressure isothermal adsorption test device for coal" (CN202502025U), "gas adsorption and desorption test device for coal samples under variable pressure conditions" (CN203705293U), "a gas adsorption and desorption test device" (CN103033442A), etc. , all adopt the heating method of water bath, and experiments under room temperature cannot be carried out; "A high-temperature and high-pressure adsorption and desorption device and its use method" (CN104062204A) ad

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  • High-low-temperature high-pressure adsorption and desorption testing device and method

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[0033] Such as figure 1 As shown, the high-low temperature and high-pressure adsorption and desorption test device of the present invention includes an air charging system, a degassing system, an adsorption system, a desorption system, a temperature control system and a data acquisition system.

[0034] The charging system includes a methane charging unit and a helium charging unit. The methane charging unit includes a high-pressure methane gas cylinder 1, a methane gas storage tank 2 and the first five-way valve. 3 connected, the high-pressure pipe 3 between the high-pressure methane gas cylinder 1 and the methane gas storage tank 2 is sequentially provided with a first gas pressure reducing valve 4 and a high-pressure gas booster pump 5 in series along the flow direction of methane gas, and the first five-way valve Including the first valve body 6, the first valve body 6 is provided with a first port 7, a second port 8, a third port 9, a fourth port 10 and a fifth port 11, a...

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Abstract

A high-low-temperature high-pressure adsorption and desorption testing device comprises an inflation system, a deflation system, an adsorption system, a desorption system, a temperature control system and a data collection system. The inflation system comprises a methane inflation unit and a helium inflation unit. The deflation system comprises a vacuum pump, a vacuum container and a vacuum gauge. The temperature control system comprises a high temperature unit and a low temperature unit. The adsorption system comprises a high temperature adsorption unit and a low temperature adsorption unit. The desorption system comprises a water drainage metering device, an electronic scale and a desorption gas flowmeter. The data collection system comprises a computer and a control unit. According to the high-low-temperature high-pressure adsorption and desorption testing device, test operations are easy and convenient, the test precision is high, adsorption and desorption tests under different pressures on the high-temperature and low-temperature conditions can be simulated respectively, real-time, accurate and automatic collection of test data is achieved, the more reliable data basis is provided for research on coal gas absorption and desorption rules, and the great practical significance is achieved for efficient gas exhausting, mining and utilization.

Description

technical field [0001] The invention belongs to the technical field of gas adsorption and desorption test devices, and in particular relates to a high-low temperature, high-pressure adsorption and desorption test device and method. Background technique [0002] Coalbed methane is produced in the coal-forming process and is mainly stored in the coal seam in the state of adsorption. With the increase of coal seam mining depth, the occurrence characteristics of microporosity, low permeability and high adsorption of gas-bearing coal seams are becoming more and more apparent. In the process of co-mining coal and gas, coal mine safety accidents and energy waste caused by difficult gas extraction plague the production of coal mines. Therefore, simulating the storage environment of deep coal seams, conducting adsorption and desorption experiments, and exploring the mechanism of gas adsorption in coal seams have important theoretical significance for the prevention and control of ga...

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Application Information

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IPC IPC(8): G01N7/04G01N7/14
CPCG01N7/04G01N7/14
Inventor 温志辉魏建平王登科李波姚邦华田宣于世洋
Owner HENAN POLYTECHNIC UNIV
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