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Mechanical Damage to Coal and Increased Coal Permeability Caused by Water-Based Ultrasonic Cavitation

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  • Xiaoyang Guo

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
    Postdoctoral Research Station, Huayang New Material Technology Group Co., Ltd., Yangquan 045000, China)

  • Yijia Liu

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Yanfeng Li

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Cunbao Deng

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Lemei Zhang

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Yu Zhang

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Abstract

Coalbed methane (CBM), recognized as a sustainable and environmentally friendly energy source, plays a crucial role in mitigating global climate change and advancing low-carbon energy solutions. However, the prevalence of low-permeability coal seams poses a significant challenge to effective CBM extraction. Improving coal permeability has emerged as a viable strategy to address the issue of low-permeability coal. Conventional CBM stimulation methods fall short in overcoming this obstacle. In contrast, the enhanced technique of CBM extraction by water-based ultrasonic cavitation holds great promise due to its use of high energy intensity, safety, and efficiency. Nevertheless, the inadequate theoretical framework for managing this technology impedes its widespread adoption for large-scale applications. This study investigated the impact of water-based ultrasonic cavitation treatment on coal’s properties and permeability through mechanical testing and permeability measurements conducted before and after treatment. This study also explored the process by which this technology, known as WUC-ECBM, improves coal’s mechanical properties and permeability. The findings suggest a potential stimulation technique (WUC-ECBM) for use in CBM extraction, and its physical mechanism.

Suggested Citation

  • Xiaoyang Guo & Yijia Liu & Yanfeng Li & Cunbao Deng & Lemei Zhang & Yu Zhang, 2024. "Mechanical Damage to Coal and Increased Coal Permeability Caused by Water-Based Ultrasonic Cavitation," Energies, MDPI, vol. 17(15), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:15:p:3626-:d:1441447
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    References listed on IDEAS

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    1. Zou, Quanle & Zhang, Tiancheng & Ma, Tengfei & Tian, Shixiang & Jia, Xueqi & Jiang, Zebiao, 2022. "Effect of water-based SiO2 nanofluid on surface wettability of raw coal," Energy, Elsevier, vol. 254(PA).
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