Effect of mineral on sulfur behavior during pressurized coal pyrolysis

Quanrun Liu, Haoquan Hu, Qiang Zhou, Shengwei Zhu, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)

Abstract

Chinese Yima coal and its HCl/HF and HCl/HF/HNO3treated samples were pyrolyzed in a fixed bed reactor under a pressure of 2 MPa. The effect of mineral on organic and pyrite sulfur transformation was investigated along with the effect of decomposition of pyrite on organic sulfur removal during pyrolysis. The results showed that the inherent mineral in coal has little effect on the decomposition of pyrite. The problems to hinder sulfur removal from coal during pyrolysis mainly include following three aspects: (I) large proportion of sulfide was produced from alkaline mineral matter in coal reacting with sulfur containing gas; (II) pyrite sulfur transformed into organic sulfur; (III) iron sulfide produced by decomposition of pyrite, which is more difficult to decompose at low temperature.
Original languageEnglish
Pages (from-to)863-871
Number of pages9
JournalFuel Processing Technology
Volume85
Issue number8-10
DOIs
Publication statusPublished - 15 Jul 2004
Externally publishedYes

Keywords

  • Coal pyrolysis
  • Desulfurization
  • Organic sulfur
  • Pyrite

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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