Applicability of Acoustic Emission Monitoring to Estimate Gasification Area in Underground Coal Gasification

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  • HAMANAKA Akihiro
    Department of Earth Resources Engineering, Kyushu University
  • ISHII Yuma
    Department of Earth Resources Engineering, Kyushu University
  • ITAKURA Ken-ichi
    Endowed Research Laboratory of Un-mined Mineral Resources and Energy Engineering, College of Information and Systems, Muroran Institute of Technology
  • SU Fa-qiang
    School of Energy Science and Engineering, Henan Polytechnic University
  • KODAMA Jun-ichi
    Division of Sustainable Resources Engineering, Hokkaido University
  • SASAOKA Takashi
    Department of Earth Resources Engineering, Kyushu University
  • SHIMADA Hideki
    Department of Earth Resources Engineering, Kyushu University
  • DEGUCHI Gota
    Underground Resources Innovation Network

Bibliographic Information

Other Title
  • 石炭地下ガス化におけるAE 計測モニタリングの可能性

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Description

<p>Underground Coal Gasification (UCG) is a promising process for recovering energy from potential underground coal resources as combustible gases such as hydrogen and carbon monoxide. The gasification process that occurs underground is an invisible phenomenon, and the temperature in the underground gasification reaction zone can be over 1,000 °C. Therefore, the visualization/monitoring of the gasification area of UCG plays an important role in the development of a highly efficient, safe , and low environmental impact UCG system. This article reviews the possibility of monitoring high-temperature gasification reaction zones in UCG using Acoustic Emission (AE) technique. AE monitoring can be used as a real time monitoring technique because AE can be detected at the same time when the cracks occur due to the gasification, indicating that it gives an advance warning immediately if the extensive damage occurs. The challenges and future prospects for estimating the gasification reaction area by AE technique are also addressed at the end of article.</p>

Journal

  • Journal of MMIJ

    Journal of MMIJ 140 (6), 50-57, 2024-06-28

    The Mining and Materials Processing Institute of Japan

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