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Water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane

An experimental system and gas coal technology, applied in the field of two-phase temperature swing adsorption-desorption-seepage experimental system of gas-containing coal-water two-phase adsorption-desorption-seepage, can solve problems such as consideration of influencing factors, not very comprehensive, etc., to ensure reliability, increase Effects of experimental features

Active Publication Date: 2013-01-30
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the adsorption-desorption experimental system and the percolation experimental system were basically separated, and the influencing factors were not considered comprehensively.

Method used

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  • Water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane
  • Water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Depend on figure 1 and figure 2 The shown loaded gas-containing coal-water-gas two-phase temperature-swing adsorption-desorption-percolation experimental system includes a pressure loading part and a coal sample preparation device.

[0016] The pressure loading part includes a pool body 4 for holding a constant temperature water bath 4A. A reference tank 5 and a coal sample holder 6 are arranged inside the pool body 4. The reference tank 5 is airtight and is provided with an air inlet and an air outlet. The reference tank 5 The air inlet of the high-pressure gas delivery pipeline 7 is connected to the high-pressure gas delivery pipeline 7. The high-pressure gas tank 1, the first pressure reducing valve 2, the first pressure gauge 14 and the switch valve 20 are arranged in sequence on the high-pressure gas delivery pipeline 7. The gas can be input into the reference tank 5, and through the first decompression valve 2, the first pressure gauge 14 and the switch va...

Embodiment 2

[0026] Depend on figure 1 and figure 2 The shown load-bearing gas-containing coal-water-gas two-phase seepage test method includes the following steps:

[0027] (1) Prepare the loaded gas-containing coal-water-gas two-phase temperature-swing adsorption-desorption-percolation experimental system as described in Example 1, connect all pipelines and close all on-off valves.

[0028] (2) Take an initial coal sample, the size of the coal sample is about Φ50×100mm, place it on a precision electronic balance and weigh it, and calculate the initial weight of the initial coal sample as m 0, put the initial coal sample in the coal sample tank 26, put into the coal sample tank 26 at least distilled water 28 that has not passed the top surface of the initial coal sample, the water level of the distilled water 28 is lower than the air extraction port 32, and then connect the vacuum pipeline 33 to the coal sample The gas extraction port 32 of the tank 26, after checking the airtightness ...

Embodiment 3

[0040] Depend on figure 1 and figure 2 The shown adsorption-desorption experimental method of loaded gas-containing coal with different moisture content includes the following steps: (1) First prepare the loaded gas-containing coal water-gas two-phase temperature-swing adsorption-desorption-seepage experiment as described in Example 1 system, connect all pipelines and close all on-off valves.

[0041] (2) Put it on a precision electronic balance and weigh it, and calculate the initial weight of the initial coal sample as m 0 , put the initial coal sample into the coal sample tank 26, put into the coal sample tank 26 at least the distilled water 28 that has not passed the top surface of the initial coal sample, the water level of the distilled water 28 is lower than the air extraction port 32, and then connect the vacuum pipeline 33 to the coal sample The gas extraction port 32 of the tank 26, after checking the airtightness of the coal sample tank 26 and the vacuum pipeline...

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Abstract

The invention discloses a water-gas two-phase adsorption-desorption-seepage experimental system and method for loaded coal containing methane. The water-gas two-phase adsorption-desorption-seepage experimental system for loaded coal containing methane comprises a pressure loading part, wherein the pressure loading part comprises a tank body for containing a constant-temperature water bath, a reference pot and a coal sample holder are arranged in the tank body, the gas inlet of the reference pot is connected with a high-pressure methane delivery pipeline, the gas outlet of the reference pot is connected with the gas inlet of the coal sample holder through a connecting pipeline, and the gas outlet of the coal sample holder is connected with a water-gas separation device. The water-gas two-phase seepage experimental method for loaded coal containing methane is carried out on the basis of the experimental system. By changing different loading conditions, loading paths and experimental temperatures, adsorption-desorption experiments and methane seepage experiments for the loaded coal containing methane under the conditions of different solid-gas thermal coupling can be realized, and water-gas two-phase seepage experiments and methane adsorption-desorption experiments under the condition of different moisture contents also can be realized.

Description

technical field [0001] The invention relates to a gas-containing coal adsorption-desorption-seepage experimental research technology under the conditions of different loads, different temperatures, different water contents and water-gas two-phase media. Thermal adsorption-desorption-percolation experimental system and method. Background technique [0002] The adsorption-desorption-seepage characteristics of gas in coal seams are affected by many factors such as gas pressure, ground stress, groundwater, ground temperature, coal body structure, and stress state, especially as my country's coal mines increasingly enter deep mining. The coupling relationship is more obvious. The previous adsorption-desorption experimental system and percolation experimental system were basically separated, and the influencing factors were not considered comprehensively. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the existing expe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22G01N15/08
Inventor 魏建平王登科刘勇姚邦华尚显光秦恒洁吴松刚
Owner HENAN POLYTECHNIC UNIV
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