Dynamic pressure regulating gas absorption and desorption experiment device based on high-pressure volumetric method

Abstract

The invention discloses a dynamic pressure regulating gas absorption and desorption experiment device based on a high-pressure volumetric method. The dynamic pressure regulating gas absorption and desorption experiment device comprises a dynamic pressure regulating inflation system, a vacuum degassing system, a gas absorption and desorption system, a constant-temperature system, a metering systemand a data processing system, wherein the dynamic pressure regulating inflation system is provided with a high-pressure gas cylinder, a pressure regulating valve, a high-pressure valve, a pressure gauge, a dynamic pressure regulating inflation tank and a three-way connector; the vacuum degassing system is provided with a vacuum pump, a motor, a vacuum diaphragm valve, a vacuum gauge tube, a vacuumgauge, a vacuum tank path, a high-pressure valve and a three-way connector; the gas absorption and desorption system is provided with an absorption and desorption tank, a pressure gauge and a high-pressure valve; the constant-temperature system is provided with a super constant-temperature water bath tank; the metering system is provided with a flow meter, a leveling bottle, a measuring cylinder,a glass piston, a sampling bag and a lifter; the data processing system is provided with a pressure sensor, a data collector, a computer and a printer. The dynamic pressure regulating gas absorptionand desorption experiment device disclosed by the invention has the advantages of convenience in operation, high experiment accuracy, accurate results and ability in achieving gas absorption and desorption experiments.

Description

technical field [0001] The invention relates to the technical field of measuring basic parameters of coal seam gas, in particular to a dynamic pressure regulating gas adsorption and desorption experimental device based on a high-pressure capacity method. Background technique [0002] The gas content of coal directly affects the amount of gas contained in the coal seam and the amount of gas emitted from the mine, which is of great significance for the correct design of mine ventilation, gas drainage, and normal ventilation and gas management of production mines. Therefore, the gas content in coal is an important basic data for gas mine production and scientific research. The gas content of coal usually only includes two parts: free gas and adsorbed gas. Free gas can be calculated based on coal porosity and gas pressure, and adsorbed gas can be calculated based on coal adsorption constant. Due to the strong heterogeneity of coal structure, there are few systematic studies on...

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Problems solved by technology

[0003] The above two experiments are based on the high-pressure volumetric method, and the main experimental equipment is basically the same. However, the two types of experiments are still carried out with different equipment, the steps are cumbersome, the operation is complicated, and there is a lack of a reasonable design, easy operation, and high experimental accuracy. , the result is accurate, the gas pressure in the adsorption and desorption tank can be dynamically adjusted through the dynamic pressure regulation and inflation system, and the experimental device can realize the adsorption and desorption experiment of gas at the same time

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