Coal-series shale gas absorption/desorption percolation experiment device

Abstract

The invention relates to a coal-series shale gas absorption / desorption percolation experiment device. The device comprises a main pipeline, a gas supply device, an absorption device and an air heating device. The absorption device comprises a triaxial pressurization device. The air heating device comprises an electric heating tube, a thermal insulator and a power source. The thermal insulator is arranged on the inner side wall of a triaxial pressure chamber, the electric heating tube is arranged inside the thermal insulator, and the power source is arranged on the outer wall of the triaxial pressure chamber. The electric heating tube is connected with the power source. The experiment device has the triaxial pressurization function, functional testing of absorption / desorption percolation of coal-series shale gas can be achieved, and coal-series shale gas absorption / desorption percolation performance parameters under the air heating action are obtained. Due to the fact that after air in the triaxial pressure chamber is heated by the air heating device, heat is transmitted into a medium to be tested by means of heat transmission, heat efficiency is high; besides, additional arrangement of a water bath warming device outside the triaxial pressurization device is omitted, and the device is simple in structure.

Description

technical field [0001] The invention relates to a shale gas adsorption / desorption seepage experimental device, in particular to a coal measure shale gas adsorption and desorption seepage experimental device. Background technique [0002] Coal-measure shale gas is an important emerging energy. In the process of coal mining, there is a very complex interaction between coal-measure shale and gas. The migration of gas in coal-measure shale is affected by gas adsorption / desorption, gas Pressure, ground stress state, groundwater, ground temperature, coal-measure shale structure and many other factors are constrained. my country is a big country for coal-measure shale gas energy storage. The research on the development and utilization of coal-measure shale gas can not only increase the safety factor of coal mine production, improve economic benefits, but also greatly alleviate the energy shortage in my country. Coal-measure shale formations are low-permeability shale formations, an...

AI Technical Summary

Problems solved by technology

Although the thermal mining method can theoretically achieve the purpose of increasing the production of coal-measure shale gas, the research on the desorption and seepage process of coal-measure shale gas during heat injection mining has not yet reached the level of clear mechanism and rules. into industrial production

The existing coal-measure shale desorption and seepage experimental devices mainly focus on electric heating and steam heating. This method needs to add a heat preservation device outside the desorption tank, and generally uses a water bath heating method, resulting in a large overall instrument volume and liquid The existence of is not easy to carry

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