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Coal sample gas constant-pressure adsorption and desorption rate testing device and method

A technology of adsorption, desorption and rate test, which is applied in the direction of analyzing materials and instruments to achieve the effect of simple structure, avoiding errors and ensuring safe production in coal mines

Active Publication Date: 2021-07-27
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0006] The purpose of this application is to provide a coal sample gas constant pressure adsorption and desorption rate test device and method to solve or alleviate the above-mentioned problems in the prior art

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  • Coal sample gas constant-pressure adsorption and desorption rate testing device and method

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Embodiment Construction

[0034] The present application will be described in detail below with reference to the accompanying drawings and embodiments. Each example is provided by way of explanation of the application, not limitation of the application. In fact, those skilled in the art will recognize that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield a still further embodiment. Accordingly, it is intended that the present application cover such modifications and variations as come within the scope of the appended claims and their equivalents.

[0035] In the description of this application, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientation or positional relationship indicated by "top", "bottom", etc. is based on the orien...

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Abstract

The invention belongs to the technical field of testing or analyzing materials by means of measuring chemical or physical properties of the materials, and provides a coal sample gas constant-pressure adsorption and desorption rate testing device and method. In the coal sample gas constant-pressure adsorption and desorption rate testing device, a first high-pressure gas cylinder, a second high-pressure gas cylinder and a vacuum degassing system are connected in parallel and are respectively connected with one end of a main high-pressure pipeline through a first pipeline, a second pipeline and a third pipeline; a sample tank and a reference tank are arranged in parallel and are respectively connected with the other end of the main high-pressure pipeline through a fourth pipeline and a fifth pipeline; a drying system is connected with the sample tank through a sixth pipeline and can dry the coal sample stored in the sample tank; a constant-temperature system is positioned outside the sample tank and the reference tank; and an analysis control system is in communication connection with the first electromagnetic valve, the second electromagnetic valve, the fourth pressure sensor, the fourth electromagnetic valve, the fifth pressure sensor and the fifth electromagnetic valve.

Description

technical field [0001] The application belongs to the technical field of testing or analyzing materials by means of measuring their chemical or physical properties, and in particular relates to a coal sample gas constant pressure adsorption and desorption rate test device and method. Background technique [0002] China is a big coal consumption country, and it is also one of the countries suffering from coal mine gas disasters very seriously. Gas drainage is a fundamental measure to control gas disasters, and the extracted gas is often used as coalbed methane resources. [0003] The mechanism of gas migration and flow during the extraction process is complicated. The current test and measurement method for the desorption rate of coalbed methane is mainly to use the drainage method to measure the gas desorption rate. The principle is to replace the free gas gas desorbed in the coal sample tank. The water column in the graduated cylinder, the reduction of the water column in ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 刘伟徐浩秦跃平毋凡张凤杰刘晓薇褚翔宇赵政舵
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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