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Visual characterization of coal gas desorption using infrared radiation

Author

Listed:
  • Tian, He
  • Li, Zhonghui
  • Liu, Zhi
  • Yin, Shan
  • Niu, Yue
  • Zhang, Quancong
  • Chen, Dong

Abstract

Gas monitoring is an important means of preventing gas disasters in coal mines. Correct gas monitoring methods can be used to locate abnormal areas of gas emission on the surface of coal bodies. Therefore, an infrared radiation (IR) testing system of coal gas adsorption and desorption is established in the present work, and the IR-based measurement of coal gas desorption is conducted. The corresponding relationship between amount of gas desorption and the infrared radiation temperature (IRT) difference in coal gas desorption process is studied. The general formula of amount of gas desorption of coal based on the average infrared radiation temperature (AIRT) difference is established, and the visual characterization of amount of gas desorption of coal based on IRT difference is realized. The results show that the process of coal gas desorption is a cooling process, and AIRT difference, in the process of coal gas desorption shows a downward trend. There is a linear relationship between the amount of gas desorption of coal and the AIRT difference. The gas desorption curve of coal based on the AIRT difference is consistent with the measured curve. The cloud diagram of coal gas desorption under different adsorption equilibrium pressures can better reflect the variation characteristics of gas desorption in the process of coal gas desorption, and quantitatively characterize the distribution of gas desorption in different regions of the coal. The research results will help to accurately grasp the regional distribution characteristics of coal gas emissions and provide theoretical support for accurate monitoring and control of gas disaster risk at the mining face.

Suggested Citation

  • Tian, He & Li, Zhonghui & Liu, Zhi & Yin, Shan & Niu, Yue & Zhang, Quancong & Chen, Dong, 2024. "Visual characterization of coal gas desorption using infrared radiation," Energy, Elsevier, vol. 289(C).
    • Handle: RePEc:eee:energy:v:289:y:2024:i:c:s0360544223034461
    DOI: 10.1016/j.energy.2023.130052
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    References listed on IDEAS

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    1. Tang, Xu & Snowden, Simon & McLellan, Benjamin C. & Höök, Mikael, 2015. "Clean coal use in China: Challenges and policy implications," Energy Policy, Elsevier, vol. 87(C), pages 517-523.
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    3. Zhou, Aitao & Du, Chang'ang & Tian, Jie & Xu, Zhiyuan & Wang, Dongxu & Wang, Kai, 2023. "Experimental study on coal deformation induced by gas adsorption-instantaneous pressure relief under unconstrained stress state with different pore structures," Energy, Elsevier, vol. 276(C).
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