Inception criteria for entrainment of molten slag droplet in an entrained flow coal gasifier

Jun Inumaru, Hiroaki Watanabe, Maromu Ohtaka, Masami Ashizawa, Kazuyoshi Ichikawa

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Experimental studies using 2 t/d and 200 t/d coal gasifier were carried out to investigate the inception criteria for entrainment of molten slag droplet in an entrained flow coal gasifier. It was clarified that average gas dynamic pressure Pd and liquid film Reynolds number Ref influenced strongly the phenomenon of entrainment of molten slag. The formula of the critical gas dynamic pressure Pdc and the critical Weber number Wec=1.73, which could be applied to the large-scale gasifier, were obtained as inception criteria for the phenomenon. It was clearly shown that the flow pattern in the large-scale gasifier could be different from the smaller gasifier by means of numerical simulation analysis and that the critical velocity Ugc decreases relatively along with the scaling - up of the gasifier.

本文言語英語
ページ(範囲)1576-1583
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
75
756
DOI
出版ステータス出版済み - 8 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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