| Item type |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2018-03-09 |
| 書誌情報 |
en : Applied Energy
巻 189,
p. 142-156,
発行日 2017-03-01
|
| タイトル |
|
|
タイトル |
Monitoring of coal fracturing in underground coal gasification by acoustic emission techniques |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Acoustic Emission (AE) |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Underground coal gasification (UCG) |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
UCG model |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Cavity growth |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Crack distribution |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
蘇, 発強
板倉, 賢一
出口, 剛太
大賀, 光太郎
|
| 室蘭工業大学研究者データベースへのリンク |
|
|
表示名 |
板倉 賢一（ITAKURA Ken-ichi） |
|
URL |
http://rdsoran.muroran-it.ac.jp/html/100000064_ja.html |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
During the underground coal gasification (UCG) process, fracturing and cracks occur inside the gasification zone and surrounding rocks as the underground coal cavity evolves. Although fracturing activity and crack extension directly affect gasification efficiency and have environmental impacts, little research to date has focused on their effects. This study discusses the application of acoustic emission (AE) analysis for the evaluation of distinctly designed UCG models and operational parameters and describes the gasification process based on its results. We studied the cavity growth, fracturing mechanism, and the effects of various design and operational variables, such as linking-hole type, gas feed rate, and gasification agent. We found that the AE activity was closely related to the temperature change occurring inside the coal, with AE generation apparently resulting from crack initiation and extension around the coal gasification area, which occurs as a result of thermal stress. UCG modeling showed that the location of AE sources reflects the size of the gasification area and the cavity growth. In addition, the quantitative information on the located AE sources can be obtained. The introduction of a process control system into UCG modeling along with AE monitoring allowed for the real-time monitoring of the fracturing and cavity evolution inside a combustion reactor. Together, these processes have the potential to significantly reduce field risk in UCG by enabling the timely adjustment of operational parameters. Thus, AE monitoring is useful for maintaining a safe and efficient UCG process. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier |
|
言語 |
en |
| 出版者版へのリンク |
|
|
表示名 |
10.1016/j.apenergy.2016.11.082 |
|
URL |
https://doi.org/10.1016/j.apenergy.2016.11.082 |
| DOI |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.apenergy.2016.11.082 |
| 日本十進分類法 |
|
|
主題Scheme |
NDC |
|
主題 |
575.3 |
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
03062619 |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 著者版フラグ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
AE_189_142_156 (1.7 MB)
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