Numerical simulation of molten-slag flow in coal gasifier

Maromu Otaka, Hiroaki Watanabe, Saburo Hara

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

4 被引用数 (Scopus)

抄録

In this paper, numerical simulations of the heat transfer in molten-slag flow with free surface and phase change (solidification) is carried out, and we propose a new evaluation method for discharging performance of the molten-slag from coal gasifier. A stable operation of the coal gasifier requires that the molten-slag should be discharged from the slag-hole continuously. In the maintenance of discharging a molten slag, it is necessary to keep the molten-slag temperature higher than an ash fluid temperature, and to hold the fluidity of the molten-slag. From the viewpoint of gasification performance, if the air ratio is set low in order to raise the cold gas efficiency, the molten-slag is not able to get enough heat for its discharge, because of the lowering of gas temperature in the coal gasifier. To strike a balance between the maintenance of continuity on the molten-slag discharge and the improvement in gasification performance, it is important to develop a prediction and evaluation method for discharge performance of the molten-slag from coal gasifier.

本文言語英語
ホスト出版物のタイトルProceedings of the ASME Power Conference, 2005
ホスト出版物のサブタイトルIncludes Papers from the 2005 International Conference on Power Engineering, ICOPE
ページ1471-1476
ページ数6
出版ステータス出版済み - 11 21 2005
外部発表はい
イベント2005 ASME Power Conference - Chicago, IL, 米国
継続期間: 4 5 20054 7 2005

出版物シリーズ

名前Proceedings of the ASME Power Conference, 2005
PART B

その他

その他2005 ASME Power Conference
Country米国
CityChicago, IL
Period4/5/054/7/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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