Extraction of Low Rank Coals by Coal Derived Oils at 350℃ for Producing Clean Fuels

DOI Web Site Web Site 被引用文献6件 参考文献19件 オープンアクセス

書誌事項

タイトル別名
  • Extraction of Low Rank Coals by Coal Derived Oils at 350.DEG.C. for Producing Clean Fuels.
  • Extraction of Low Rank Coals by Coal Derived Oils at 350ドC for Producing Clean Fuels

この論文をさがす

説明

We have recently presented a new coal solvent extraction method that enhances the extraction yield dramatically. The method extracts coal using a flowing stream of either tetralin or 1-methylnaphthalene under 10 MPa at 200 to 400°C. The extract yield reached 65 to 80% for bituminous coals at 350°C, and the extract was almost free from mineral matters. Thus, this method was found to be effective to recover clean fuels from bituminous coals under rather mild conditions. To extend the extraction method to low rank coals and to make the method practically applicable, coal derived oils, carbol oil and creosote oil, were used in addition to tetralin in this study. Twenty kinds of coals were subjected to the extraction by tetralin and the coal derived oils at 350°C. Almost all sub-bituminous coals and brown coals examined were surprisingly extracted by 80% in the carbol oil at 350°C. It was also found that the extract was almost free from mineral matters and that most of sulfur was retained in the coal through the extraction by tetralin, whereas most of sulfur including pyritic sulfur was transferred into the soluble fraction through the extraction by the carbol oil. Thus, it was clarified that the proposed method was effective to produce a large amount of clean fuels from low rank coals under rather mild conditions.

収録刊行物

被引用文献 (6)*注記

もっと見る

参考文献 (19)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ