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Modeling coal pyrolysis in a cocurrent downer reactor
Zhang, Yan1,2; Zhao, Yuehong1; He, Xianfeng1
2015-08-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume21Issue:AUGPages:154-159
Abstract

In this paper, a model for fast coal pyrolysis in a cocurrent downer reactor is developed, in which both hydrodynamics and coal pyrolysis kinetics are simultaneously considered. The results of simulations based on this model display reasonable agreement with experimental data obtained using Huolinhe coal as the feedstock, and this model is therefore suitable for predicting the fast pyrolysis of specific coal types. A series of simulations of fast coal pyrolysis in a cocurrent downer demonstrated that coal devolatilization is almost complete in the inlet region within a time span of 0.4s, and that higher temperatures improve the pyrolysis efficiency. However, the yield of liquid products is decreased with increasing pyrolysis temperatures, especially above 670 degrees C, because of additional cracking of the liquids. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences.

KeywordCoal Pyrolysis Model Cocurrent Downer Low-rank Coal
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2014.06.015
Indexed BySCI
Language英语
WOS KeywordFLASH PYROLYSIS ; BROWN-COAL ; DEVOLATILIZATION ; KINETICS ; TEMPERATURE ; BED
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
WOS IDWOS:000356980700017
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19317
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yan,Zhao, Yuehong,He, Xianfeng. Modeling coal pyrolysis in a cocurrent downer reactor[J]. PARTICUOLOGY,2015,21(AUG):154-159.
APA Zhang, Yan,Zhao, Yuehong,&He, Xianfeng.(2015).Modeling coal pyrolysis in a cocurrent downer reactor.PARTICUOLOGY,21(AUG),154-159.
MLA Zhang, Yan,et al."Modeling coal pyrolysis in a cocurrent downer reactor".PARTICUOLOGY 21.AUG(2015):154-159.
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