Two-stage hydrodenitrogenation of heavy distillate in a coal liquid

Isao Mochida, Kinya Sakanishi, Yozo Korai, Hiroshi Fujitsu

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

Successive two-stage hydrodenitrogenation using a commercial NiMo catalyst was applied to a heavy distillate of a coal liquid to achieve a high level of denitogenation. A successive hydrotreatment in 1-methylnaphthalene, at 390 °C for 2 h and at 440 °C for 2 h under hydrogen pressure of 12 MPa, removed 83% (overall) nitrogen from the distillate, while a single reaction at 420 °C for 3 h under 23 MPa removed only 34%. Addition of catalyst prior to the second stage reaction, or a four-ring aromatic such as pyrene or fluoranthrene as a component of the reaction solvent (20 wt%) increased markedly the removal of nitrogen in the two stage hydrotreatment. Based on preliminary analyses of the products, a combination of extensive hydrogenation in the first stage and effective CN bond cleavage in the second is suggested for the course of the effective denitrogenation. Suppression of catalyst deactivation, by proper choice of solvent may be another reason. The hydrogen pressure required for denitrogenation can be reduced in a two-stage process.

本文言語英語
ページ(範囲)633-635
ページ数3
ジャーナルFuel
65
5
DOI
出版ステータス出版済み - 5 1986

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術
  • 有機化学

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