Laboratory analog simulation device for simulating underground coal bed gasification process

Abstract

The invention discloses a laboratory analog simulation device for simulating an underground coal bed gasification process, and relates to the technical field of underground coal bed gasification research. The simulation device comprises a base, a gasification wastewater treatment device and an experiment table, wherein a plurality of simulated layers are sequentially laid in an experiment box bodyfrom bottom to top; a separation test assembly is arranged between every two adjacent simulated layers; the simulated layer at the lowermost end is a simulated coal bed; a roadway simulation conduitassembly is used for being laid in the simulated coal bed; a gas inlet conduit and a gas outlet conduit are arranged on the two sides in the experiment box body respectively; the lower end of the gasoutlet conduit is connected with the roadway simulation conduit assembly; the upper end of the gas outlet conduit extends out of the top of the experiment box body and is connected with a gas component analysis device; and an oxidation zone monitoring assembly and a reduction zone monitoring assembly are both arranged in the simulated coal bed. The simulation device can simulate underground coal to realize a complete underground mining process and ground extracted gas component analysis, and an experimental platform is provided for laboratory scale research before underground gasification technology implementation.

Description

technical field [0001] The invention relates to the technical field of underground coal seam gasification research, in particular to a laboratory-like simulation device for simulating the underground coal seam gasification process. Background technique [0002] my country's total reserves of coal resources are relatively large, but my country's large population optimizes the structure of energy supply and demand. Optimizing the structure of coal production and consumption, promoting clean coal production and intelligent and efficient mining, and conducting green and precise mining of coal resources are urgent tasks facing my country's coal industry. As an important way of green and safe mining, coal gasification mining is very important to accelerate the exploration, development and utilization of coalbed methane and realize the gasification mining of underground coal. [0003] Underground coal gasification is a complex process as it depends on many factors such as geologic...

AI Technical Summary

Problems solved by technology

However, the underground environment where the original coal resources are located has not been fully considered, so the complete process of coal resources directly gasified from the ground has not been effectively simulated, and the impact of underground coal gasification on the state and shape of the coal seam As well as the impact of the reaction process and the advancement of mining, the fracture mechanism of the roof and the movement of the overlying strata have not been effectively explored; at the same time, the process of coalbed gasification mining is affected by many factors, including the various stages of the reaction. The temperature is relatively sensitive, and the gas composition in the reaction process has a great influence on the progress of the reaction. However, the existing coal gasification methods and technologies lack the monitoring of effective parameters in the gasification reaction process.

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