A fully automatic gas adsorption and desorption system and process

Abstract

The invention relates to a full-automatic gas adsorption and desorption system and a full-automatic gas adsorption and desorption process. A gas source (1) is adjusted by an automatic valve via a pipeline and respectively connected with four adsorption tanks connected with an electronic pressure gauge, a vacuum pump (12) is connected with the adsorption tanks by virtue of pipelines; the automatic valve, an intelligent flowmeter, the electronic pressure gauge, a temperature adjuster and the vacuum pump are connected with a central controller (29) by virtue of circuits; and a touch screen (30) is connected with the central controller. The opening and closing of the automatic valve, the intelligent flowmeter, the electronic pressure gauge, the temperature adjuster and the vacuum pump are controlled by the touch screen and the central controller so as to realize the full automation of a gas adsorption and desorption test and to collect data in the test process; and the system and process are high in determination precision; the tests of different test samples under different pressures and different temperatures can be simultaneously performed; a one-key operation can be realized; the process is simple and convenient; the test efficiency of gas adsorption and desorption can be greatly improved; and the test data is accurate, and the error rate of the test data is decreased.

Description

Technical field [0001] The invention relates to a gas adsorption and analysis system and process, in particular to a fully automatic gas adsorption and desorption system and process, belonging to the technical field of gas experimental systems. Background technique [0002] Coal and gas outburst accidents are a potential major threat to the deaths and injuries of coal mines, seriously affecting the safety production of coal mines and causing huge economic losses to society. Coal seam gas desorption initial velocity and gas pressure are important indicators for predicting coal and gas outbursts. However, due to the difficulty of field testing, the initial gas desorption velocity and isotherm adsorption constant a and b values ​​are usually measured in the laboratory, and then the coal seam gas pressure is calculated. Therefore, studying the kinetic characteristics of coal adsorption and desorption of gas has important theoretical and practical significance for preventing coal and ...

AI Technical Summary

Problems solved by technology

[0003] At present, the most commonly used method for studying gas adsorption and desorption is the volumetric method. Most of them use the drainage method to manually read the amount of gas desorption, but the experimental process is cumbersome. stage, the speed is fast, and the drainage is rapid, resulting in a large deviation in the manual reading of the experimental data

For this reason, engineers and technicians in this field have conducted a large amount of research on gas adsorption and desorption devices. A Chinese invention patent published on April 10, 2013 is "a gas adsorption and desorption experimental device" with the publication number CN103033442A. It is based on the principle of measuring the gas volume by the drainage method, and then uses a computer to collect data, but the structure is complex, and all valves in the device are still mechanical valves, which need to be switched manually, and one-button automatic operation cannot be realized.

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