Monitoring the gasification area and its behavior in underground coal gasification by acoustic emission technique instead of temperature measurement
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- Hamanaka, Akihiro
- Department of Earth Resources Engineering, Kyushu University
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- Ishii, Yuma
- Department of Earth Resources Engineering, Kyushu University
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- Itakura, Ken-ichi
- Endowed Research Lab. of Un-mined Mineral Resources and Energy Eng., Muroran Institute of Technology
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- Sasaoka, Takashi
- Department of Earth Resources Engineering, Kyushu University
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- Shimada, Hideki
- Department of Earth Resources Engineering, Kyushu University
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- Widodo, Nuhindro Priagung
- Department of Mining Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung
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- Sulistianto, Budi
- Department of Mining Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung
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- Kodama, Jun-ichi
- Division of Sustainable Resources Engineering, Hokkaido University
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- Deguchi, Gota
- Underground Resources Innovation Network
Description
Underground Coal Gasification (UCG) requires monitoring of the gasification area because the gasification process is invisible and the reaction temperature exceeds 1000 °C. Many fracturing events that occurred due to coal heating can be captured with Acoustic Emission (AE) monitoring technique during UCG. However, the temperature conditions to generate fracturing events during UCG have not yet been clarified. Therefore, the coal heating experiment and small-scale UCG experiment are conducted by measuring the temperature and AE activities in this research to examine the applicability of the AE technique instead of temperature measurement as a monitoring method during UCG. As a result, many fracturing events are generated when the temperature of coal is changed drastically, especially during coal gasification. Besides, AE events increase in the sensor near the heat source and AE sources are expanded widely with the expansion of the high-temperature region. AE monitoring is an effective technique for the estimation of the gasification area during UCG instead of temperature monitoring.
Journal
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- Scientific Reports
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Scientific Reports 13 9757-, 2023-06-16
Springer Nature
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Keywords
Details 詳細情報について
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- CRID
- 1050017057726311168
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- ISSN
- 20452322
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- HANDLE
- 2324/6792845
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- PubMed
- 37328489
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- KAKEN
- OpenAIRE
