Low temperature drying of low rank coal by supercritical carbon dioxide with methanol as entrainer

Yoshio Iwai, Yasutake Koujina, Yasuhiko Arai, Izumi Watanabe, Isao Mochida, Kinya Sakanishi

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)

抄録

Berau coal as lignite was dried with supercritical carbon dioxide. When methanol was added in supercritical carbon dioxide as an entrainer, the extraction rate of water remarkably increased. Methanol added as an entrainer can reduce water contents to half of those of the coal dried with supercritical carbon dioxide and thermally dried coal. The surface area and pore volume of coal slightly decreased with increase in the mole fraction of methanol added in supercritical carbon dioxide. Flash pyrolysis was carried out at 740 °C for 5 s. The tar yield was significantly larger and the char yield was smaller for the coal dried with supercritical carbon dioxide+methanol compared with those dried with supercritical carbon dioxide only and dried thermally.

本文言語英語
ページ(範囲)251-255
ページ数5
ジャーナルJournal of Supercritical Fluids
23
3
DOI
出版ステータス出版済み - 2002

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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