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Effect of mineral on sulfur behavior during pressurized coal pyrolysis

Authors Liu, Quanrun
Hu, Haoquan
Zhou, Qiang
Zhu, Shengwei
Chen, Guohua View this author's profile
Issue Date 2004
Source Fuel processing technology , v. 85, (8-10), 2004, JUL 15, p. 863-871
Summary Chinese Yima coal and its HCl/HF and HCl/HF/HNO3 treated 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. (C) 2004 Elsevier B.V. All rights reserved.
ISSN 0378-3820
Language English
Format Article
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