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Method and device for determining length of gasification working face in underground coal gasification process

An underground gasification and working face technology, applied in coal gasification, underground mining, earth drilling and mining, etc., can solve the problem of difficulty in the length of the gasification working face, and achieve simple and easy realization, good monitoring and operation processing, The Effect of Increasing the Content of Effective Components in Gas

Active Publication Date: 2016-06-29
ENN SCI & TECH DEV
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Problems solved by technology

[0005] However, since the underground coal gasification channel is in the underground coal seam, the difficulty of depth and the high temperature formed by the coal seam combustion during the gasification process make it difficult to determine the length of the gasification working face in the underground coal gasification process

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  • Method and device for determining length of gasification working face in underground coal gasification process
  • Method and device for determining length of gasification working face in underground coal gasification process
  • Method and device for determining length of gasification working face in underground coal gasification process

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0029] see figure 1 The method for determining the length of the gasification working face in the underground coal gasification process provided by the embodiment of the present invention may include step 11 to step 15.

[0030] In step 11, a gasification simulation platform is built according to the underground coal gasification site.

[0031] Wherein, the gasification simulation platform may include a simulated coal seam, a gasification channel, a temperature sensor, a gasification agent system, a water vapor system, and a monitoring system, and the coal in the simulated coal seam comes from the underground coal seam of the underground coal gasification site , the gasification channel and the temperature sensor are arranged in the simulated coal seam, the first end of the gasification channel is ...

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Abstract

The invention discloses a method, system and device for determining the length of a gasification working face in an underground coal gasification process. The method includes: building a gasification simulation platform according to the underground coal gasification site; obtaining monitoring data from the gasification simulation platform; determining The length of the gasification working face of the gasification simulation platform at different times, and according to the gas composition and gas flow output by the gasification simulation platform at different times, the pyrolysis coal volume of the gasification simulation platform at different times is obtained; The length of the gasification working face, the amount of pyrolysis coal, the amount of pollutant precipitation, and the gas temperature output from the gasification simulation platform at different times, and the length of the gasification working face, the amount of pollutant precipitation, and the pyrolysis of the underground coal gasification site are determined. The relationship between the amount of coal and the gas temperature at the outlet of the gasification channel; according to the determined relationship, the length of the gasification working face in the underground coal seam of the underground coal gasification site is obtained, which reduces the cost of determining the length of the gasification working face in the underground coal gasification process. difficulty.

Description

technical field [0001] The invention relates to coal gasification technology, in particular to a method, system and device for determining the length of a gasification working face in an underground coal gasification process. Background technique [0002] Underground coal gasification is a process in which coal buried in the ground is burned directly and controlled, and combustible gas is generated through the thermal and chemical effects of coal. Underground coal gasification, also known as chemical coal mining, has the advantages of good safety, low investment, high efficiency, and less pollution compared with traditional physical coal mining by building wells. [0003] In the underground coal gasification process, the channel formed by the gasification agent in the coal seam from the air inlet hole to the air outlet hole is the gasification channel. The area where the chemical reaction occurs in the gasification channel is the gasification area, that is, the gasification...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B43/295
Inventor 李金刚姚凯
Owner ENN SCI & TECH DEV
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