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Coal rapid pyrolysis in a transport bed under steam-containing syngas atmosphere relevant to the integrated fluidized bed gasification
Chen, Zhaohui1,2; Shi, Yong3; Lai, Dengguo1,2; Gao, Shiqiu1; Shi, Zhen1,2; Tian, Yong1,2; Xu, Guangwen1; Gao, SQ
2016-07-15
发表期刊FUEL
ISSN0016-2361
卷号176期号:JULY页码:200-208
摘要An integrated fluidized bed (IFB) consisting of an upper transport bed section and a bottom fluidized bed section was adopted to investigate the transport bed coal pyrolysis by varying its reaction temperature and reaction atmosphere adjusted to simulate steam-containing syngas produced by the bottom fluidized bed char gasification. Steam and syngas, in comparison with N-2, as the reaction atmosphere little affected the tar yield below 600 degrees C but significantly decreased it for the former and increased it for the latter at rather higher temperatures. The presence of H-2 in the syngas increased tar yield significantly because it could suppress polymerization and condensation reactions through providing H as radical stabilizer and hydrogenation agent. In the steam-containing syngas atmosphere, the tar yield obtained from transport bed rapid pyrolysis increased rapidly with raising temperature to a peak value of 10.5 wt.% (daf) at 600 degrees C, about 1.1 wt.% higher than the Gray-King assay yield, and then decreased due to the excessive secondary reactions. Analyzing tar composition further showed that steam-containing syngas combined their respective advantages that syngas improved the yields of both light and heavy tars while steam reduced the heavy tar yield, especially at temperatures above 600 degrees C. The steam-containing syngas atmosphere also promoted CH4 production in comparison with syngas atmosphere below 700 degrees C. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Pyrolysis Coal Transport Bed Steam Syngas Tar
文章类型Article
学科领域Energy & Fuels ; Engineering, Chemical ; Energy & Fuels ; Engineering
WOS标题词Science & Technology ; Technology
DOI10.1016/j.fuel.2016.02.082
URL查看原文
收录类别SCI
语种英语
关键词[WOS]VICTORIAN BROWN-COAL ; VOLATILE-CHAR INTERACTIONS ; IN-SITU DESTRUCTION ; WIRE-MESH REACTOR ; DROP-TUBE REACTOR ; COKE-OVEN GAS ; LOW-RANK COAL ; PRODUCT DISTRIBUTION ; FLASH PYROLYSIS ; NASCENT CHAR
WOS研究方向Energy & Fuels ; Engineering
WOS类目Energy & Fuels ; Engineering, Chemical
项目资助者International Science & Technology Cooperation Program of China(2013DFG60060) ; National Natural Science Foundation of China(21376250 ; Strategic Priority Research Program of Chinese Academy of Sciences(XDA07010100) ; U1302273)
WOS记录号WOS:000372325500024
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20684
专题研究所(批量导入)
通讯作者Gao, SQ
作者单位1.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
3.Anhui Univ Technol, Maanshan 243002, Anhui, Peoples R China
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Chen, Zhaohui,Shi, Yong,Lai, Dengguo,et al. Coal rapid pyrolysis in a transport bed under steam-containing syngas atmosphere relevant to the integrated fluidized bed gasification[J]. FUEL,2016,176(JULY):200-208.
APA Chen, Zhaohui.,Shi, Yong.,Lai, Dengguo.,Gao, Shiqiu.,Shi, Zhen.,...&Gao, SQ.(2016).Coal rapid pyrolysis in a transport bed under steam-containing syngas atmosphere relevant to the integrated fluidized bed gasification.FUEL,176(JULY),200-208.
MLA Chen, Zhaohui,et al."Coal rapid pyrolysis in a transport bed under steam-containing syngas atmosphere relevant to the integrated fluidized bed gasification".FUEL 176.JULY(2016):200-208.
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