Gas desorption process simulation test device based on geological exploration coal analytical method
A technology of process simulation and testing equipment, which is applied in the direction of fuel oil testing, analysis materials, instruments, etc.
Inactive Publication Date: 2019-06-14
LIAONING TECHNICAL UNIVERSITY
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[0003] Aiming at the defects of the existing simulated gas desorption experiment device, the present invention provides a gas desorption process simulation test device based on the geological prospecting coal analysis method, which can complete the vacuum degassing before the coal sample experiment and the system pipe network, coal sample tank, Calibration of the space volume in the air tank and the mud tank, and can keep the coal sample in the coal sample tank I and II at a constant temperature during the adsorption and desorption process
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[0021] like figure 1 As shown, the present invention includes a vacuum degassing unit, an adsorption balance unit, a mud medium simulation unit and a desorption measurement control unit. The vacuum degassing unit is composed of FZH-2B composite vacuum gauge (1), 2X-8A rotary vane vacuum pump (2), vacuum piping system (3), vacuum silicon tube (4) and glass three-way valve (5). The adsorption balance unit is composed of constant temperature water bath (11), LY801 super thermostat (12), coal sample tank (10), gas filling tank (9), precision pressure gauge (7), needle two-way valve (17), needle The three-way valve (8) and the high-purity gas bottle (6) are composed. The mud medium environment simulation unit is composed of a mud tank (13), a grouting pipe (14), and a high-pressure nitrogen cylinder (15). The upper end of the mud tank (13) has the precision pressure gauge (7). Nitrogen gas is produced. Desorption measurement control unit This unit is composed of a pressure regul...
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The invention discloses a gas desorption process simulation test device based on a geological exploration coal analytical method, and relates to the technical field of coal gas content determination.The device comprises a vacuum degassing unit, an adsorption balancing unit, a mud medium environment simulation unit and a desorption measurement control unit. The vacuum degassing unit is provided with an FZH-2B composite vacuum gauge, a 2X-8A rotary-vane vacuum pump, a vacuum tube set, a vacuum silicon tube and a glass three-way valve. The adsorption balancing unit is composed of a constant temperature water bath, an LY801 adsorption balancing unit, a coal sample tank, an inflation tank, a precision pressure gauge, a needle type two-way valve, a needle type three-way valve and a high-puritygas bottle. The mud medium environment simulation unit is composed of a mud tank, a mud injection tube and a high-pressure nitrogen cylinder; the precision pressure gauge is arranged at the upper endof the mud tank; and the pressure of the mud is generated by high-pressure nitrogen. The desorption measurement control unit is composed of a pressure regulating valve, a rubber tube and a gas desorption instrument.
Description
technical field [0001] The invention relates to the technical field of coal gas content measurement, in particular to a gas desorption process simulation test device based on a geological prospecting coal analysis method. Background technique [0002] Using laboratory to simulate gas desorption in deep coal seams is an important means to study the law of gas migration. The adsorption and desorption of gas can be considered as a reversible process. After the adsorption of coal seam gas is saturated, under certain conditions, the gas is mainly desorbed. The accuracy of determining the gas content of coal seams by the gas desorption method in geological survey mainly depends on whether the calculation of the amount of gas lost during drilling is in line with the actual situation. By simulating the test device for gas desorption in deep coal seams, the gas desorption process under different adsorption equilibrium pressure conditions is studied, and the gas desorption law is ana...
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IPC IPC(8): G01N7/14G01N33/22
Inventor 郭云峰
Owner LIAONING TECHNICAL UNIVERSITY