Ex Situ UCG model experiments with oxygen enriched air in an artificial coal seam

Fa Qiang Su, Kenichi Itakura, Akihiro Hamanaka, Gota Deguchi, Kohki Sato, Jun Ichi Kodama

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Underground Coal Gasification (UCG) demands precise evaluation of the combustion area in the coal seam. Especially, the monitoring of fracture activity in the coal seam and around rock is important not only for efficient gas production but also for estimation of subsidence and gas leakage to the surface. For this objective, laboratory experiments were conducted using the simulated UCG models. This paper also investigated gas energy for coal consumption, the production gas quantity and heat value, the application of oxygen element balance in the gasification reaction process, and the gas composition obtained in this study. During burning of the coal, temperatures inside the coal, contents of product gases and acoustic emission (AE) activities were monitored successively under the control of feeding gas (air/oxygen and steam) flow rate. Comparison of the temperature variation and accumulated AE event curves revealed a close correlation between them. The local change of temperature inside the coal induced fractures with AE. The AE activity was related closely to the local changes of temperature inside the model. The evaluation of gas energy recovery calculated from the obtained product gas provided a fair evaluation for the coal consumed, and the quantity of gas product and calorific value obtained from the UCG process.

本文言語英語
ホスト出版物のタイトルEngineering Materials and Technology - ICMSET 2016
編集者Jong Won Jung
出版社Trans Tech Publications Ltd
ページ379-384
ページ数6
ISBN(印刷版)9783035710335
DOI
出版ステータス出版済み - 2017
外部発表はい
イベントInternational Conference on Material Science and Engineering Technology, ICMSET 2016 - Phuket, タイ
継続期間: 10 14 201610 16 2016

出版物シリーズ

名前Key Engineering Materials
737 KEM
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

その他

その他International Conference on Material Science and Engineering Technology, ICMSET 2016
Countryタイ
CityPhuket
Period10/14/1610/16/16

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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