Biometric Technology Today, Vol. 2025 No. 1 (0): Theme: The Adaptive Biometric Technology: Innovations in AI, Security, Data Mining, and Network Optimization, Theme: Adaptive Biometric Technology: Innovations in AI, Security, Data Mining, and Network Optimization

Experimental study on the effect of intermittent microwave on coal adsorption performance

Authors

  • Dan Zheng , Institute of Safety Science and Engineering, Liaoning Technical University; Key Laboratory of Mine Thermal Power Disaster and Prevention Education, Liaoning Technical University
  • Yuxing Zhang , Institute of Safety Science and Engineering, Liaoning Technical University; Key Laboratory of Mine Thermal Power Disaster and Prevention Education
  • Lin Hong , Institute of Safety Science and Engineering, Liaoning Technical University; Key Laboratory of Mine Thermal Power Disaster and Prevention Education, Liaoning Technical University
  • Dameng Gao Institute of Safety Science and Engineering, Liaoning Technical University; Key Laboratory of Mine Thermal Power Disaster and Prevention Education, Liaoning Technical University

Keywords:

Coalbed methane; microwave irradiation;lignite;adsorption performance;pore structure

Abstract

Most of the coal seams in China belong to low permeability coal seams, and microwave permeability enhancement method can effectively improve the mining effect of coalbed methane. In order to study the effect of microwave irradiation on the adsorption performance and pore structure of coal, the lignite samples of Hulun Buir Linglu Mine in Inner Mongolia were irradiated by intermittent microwave. The LPGA-N2 experiment and LPGA-CO2 adsorption experiment were carried out on the irradiated coal samples, and the NLDFT model was used to calculate the effect of microwave irradiation on the pore volume, specific surface area and proportion of coal samples. The results show that with the increase of irradiation time, the adsorption amount of CO2 and N2 on coal decreases linearly. After 10 min of microwave irradiation, the adsorption amount of CO2 decreases by 14.13 %, and the adsorption amount of N2 decreases by 34.34 %. The total pore volume and total specific surface area of coal samples decreased with the increase of irradiation time due to microwave action. Therefore, it was confirmed that microwave action would reduce the adsorption performance of coal samples. The experimental results will help to improve the gas extraction rate and provide reference for reducing the risk of coal seam outburst.

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Published

2025-06-11

Issue

Vol. 2025 No. 1 (0): Theme: The Adaptive Biometric Technology: Innovations in AI, Security, Data Mining, and Network Optimization

Section

Theme: Adaptive Biometric Technology: Innovations in AI, Security, Data Mining, and Network Optimization