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Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal
Chen, Zhao-Hui1,2; Lai, Deng-Guo1,2; Bai, Li-Qiang1; Tian, Yong1,2; Gao, Shi-Qiu1; Xu, Guang-Wen1; Tsutsumi, Atsushi3
2015-12-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume140Issue:DECPages:88-95
AbstractAn integrated fluidized bed which combines a fluidized bed gasifier and a transport bed pyrolyzer was proposed to produce CH4-rich syngas from coupling pyrolysis and gasification of low-rank powder coal below 10 mm. This study investigated the effects of major operating parameters on CH4 content in the syngas produced from processing a kind of subbituminous coal in a laboratory facility. It was found that the formation of CH4 was facilitated under the conditions of lower overall excessive oxygen ratio (ER), lower temperature of gasification (830-970 degrees C), higher temperature of pyrolysis (500-700 degrees C) and higher holdup of coal in transport bed. The CH4 content in the produced syngas increased with elevating the operating pressure but decreased with increasing the steam to carbon ratio (S/C) for gasification. Coupling transport bed pyrolysis with fluidized bed gasification at atmospheric pressure caused the CH4 content in the syngas to be 7.1 vol.% under the conditions of ER = 0.1, S/C = 0.1, gasification temperature of 900 degrees C and pyrolysis temperature of 700 degrees C, which was higher than 5.1 vol.% for the case without coupling coal pyrolysis. At the operating pressure of 1.4 MPa the CH4 content reached about 11.2 vol.%, about six times higher than 2.0 vol.% for the usual fluidized bed gasification and close to 12.0 vol.% for the Lurgi gasifier. (C) 2015 Elsevier B.V. All rights reserved.
KeywordMethane-rich Syngas Low-rank Coal Gasification Pyrolysis Coupling Integrated Fluidized Bed
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2015.08.028
Indexed BySCI
Language英语
WOS KeywordFREE-FALL REACTOR ; COKE-OVEN GAS ; NATURAL-GAS ; STEAM GASIFICATION ; BROWN-COAL ; TEMPERATURE ; PRESSURE ; GASIFIER ; BIOMASS ; CHINA
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationInternational Science & Technology Cooperation Program of China(2013DFG60060) ; National Basic Research Program of China(2011CB201304) ; National Natural Science Foundation of China(21376250 ; Chinese Academy of Sciences(XDA07010100) ; U1302273)
WOS IDWOS:000363354000011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19745
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, Being 100049, Peoples R China
3.Univ Tokyo, Inst Ind Sci, Collaborat Res Ctr Energy Engn, Meguro Ku, Tokyo 1538505, Japan
Recommended Citation
GB/T 7714
Chen, Zhao-Hui,Lai, Deng-Guo,Bai, Li-Qiang,et al. Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal[J]. FUEL PROCESSING TECHNOLOGY,2015,140(DEC):88-95.
APA Chen, Zhao-Hui.,Lai, Deng-Guo.,Bai, Li-Qiang.,Tian, Yong.,Gao, Shi-Qiu.,...&Tsutsumi, Atsushi.(2015).Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal.FUEL PROCESSING TECHNOLOGY,140(DEC),88-95.
MLA Chen, Zhao-Hui,et al."Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal".FUEL PROCESSING TECHNOLOGY 140.DEC(2015):88-95.
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