Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal

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	Methane-rich syngas production in an integrated fluidized bed by coupling pyrolysis and gasification of low-rank coal
	Chen, Zhao-Hui 1,2; Lai, Deng-Guo 1,2; Bai, Li-Qiang 1; Tian, Yong 1,2; Gao, Shi-Qiu 1; Xu, Guang-Wen 1; Tsutsumi, Atsushi 3
刊名	FUEL PROCESSING TECHNOLOGY
	2015-12-01
卷号	140 期号:DEC 页码:88-95
关键词	Methane-rich syngas Low-rank coal Gasification Pyrolysis Coupling Integrated fluidized bed
ISSN号	0378-3820
英文摘要	An 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.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	FREE-FALL REACTOR ; COKE-OVEN GAS ; NATURAL-GAS ; STEAM GASIFICATION ; BROWN-COAL ; TEMPERATURE ; PRESSURE ; GASIFIER ; BIOMASS ; CHINA
收录类别	SCI
语种	英语
WOS记录号	WOS:000363354000011
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19745]
专题	过程工程研究所_多相复杂系统国家重点实验室
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, Being 100049, Peoples R China 3.Univ Tokyo, Inst Ind Sci, Collaborat Res Ctr Energy Engn, Meguro Ku, Tokyo 1538505, Japan
推荐引用方式 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.