Experimental investigation of gasification and incineration characteristics of dried sewage sludge in a circulating fluidized bed

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	Experimental investigation of gasification and incineration characteristics of dried sewage sludge in a circulating fluidized bed
	Zhu, Jian-guo 1; Yao, Yao 1,2; Lu, Qing-gang 1; Gao, Ming 1; Ouyang, Zi-qu 1,2
刊名	FUEL
	2015-06-15
卷号	150 页码:441-447
关键词	Dried sewage sludge Gasification Incineration Nitrogen oxides
英文摘要	Sewage sludge is noted for its high nitrogen content compared to most other fuels. A combined gasification and incineration process for the disposal of dried sewage sludge was tested in a pilot-scale circulating fluidized bed (CFB) gasifier and a down-flow combustor (DFC). Syngas produced from the CFB gasifier, together with fine solids, was pneumatically transported into the DFC for incineration in order to recover the heating value of the syngas with low nitrogen oxides emission. Measured data indicated that under typical operating conditions, approximately 90% of fuel-N was released into the gas phase and further reduced to N-2 in the gasifier. The NOx concentrations measured in the subsequent incineration process were 220 +/- 6 mg/N m(3) (corrected to 6 vol% free O-2) due to effective air staging scheme that maintained the temperature in the DFC below 1150 degrees C. The conversion of fuel-N to NOx was found to be 1 +/- 0.04%, based on elemental mass balance. The combustible content in the fly ash collected from the DFC was 2.8%, corresponding to an overall combustion efficiency of 99.2% in the system. The experimental results demonstrated that the two-stage process developed in the present study is very promising for environmentally friendly disposal of sewage sludge. Crown Copyright (C) 2015 Published by Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	STEAM GASIFICATION ; EMISSION CHARACTERISTICS ; HYDROGEN-PRODUCTION ; AIR GASIFICATION ; ENERGY RECOVERY ; COMBUSTION ; COAL ; CHINA ; N2O ; REMOVAL
收录类别	SCI
语种	英语
WOS记录号	WOS:000351710400052
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98937]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Jian-guo,Yao, Yao,Lu, Qing-gang,et al. Experimental investigation of gasification and incineration characteristics of dried sewage sludge in a circulating fluidized bed[J]. FUEL,2015,150:441-447.
APA	Zhu, Jian-guo,Yao, Yao,Lu, Qing-gang,Gao, Ming,&Ouyang, Zi-qu.(2015).Experimental investigation of gasification and incineration characteristics of dried sewage sludge in a circulating fluidized bed.FUEL,150,441-447.
MLA	Zhu, Jian-guo,et al."Experimental investigation of gasification and incineration characteristics of dried sewage sludge in a circulating fluidized bed".FUEL 150(2015):441-447.