Experimental Study on Nitrogen Transformation in Combustion of Pulverized Semi-coke Preheated in a Circulating Fluidized Bed

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	Experimental Study on Nitrogen Transformation in Combustion of Pulverized Semi-coke Preheated in a Circulating Fluidized Bed
	Yao, Yao 1; Zhu, Jian-guo 2; Lu, Qing-gang 2
刊名	ENERGY & FUELS
	2015-06-01
卷号	29 期号:6 页码:3985-3991
英文摘要	A series of pulverized semi-coke combustion experiments were carried out to investigate the characteristics of fuel-N transformation and the effect of operating conditions in a circulating fluidized bed (CFB) and a down-fire combustor (DFC) on fuel-N transformation. The fuel-N transformation takes place in two stages: first, the fuel-N in pulverized semi-coke is partly converted to N-2 and NH3 in a circulating fluidized bed; second, the fuel-N in preheated semi-coke and NH3 is converted to NOx or N-2 in a down-fire combustor. The fuel-N in the preheated semi-coke and the NH3 concentration in the syngas both decreased with increasing lambda(CFB) in the preheating process. The distribution of the secondary air determined the paths of NH3 conversion in the reducing zone. The air staging of the tertiary air promoted NH3, which was generated for fuel-N, converting to N-2 in a complete combustion process. With this process, the NOx emissions were effectively limited. The lowest NO emission from combustion of pulverized semi-coke was 50 mg/m(3) (about 60 mg/m(3) NOx) (at 6 vol % free O-2), which satisfied the emission standard of air pollutants for thermal power plants in China.
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]	CARBONACEOUS MATERIALS ; NOX EMISSIONS ; COAL CHAR ; PYROLYSIS ; RELEASE ; CONVERSION ; PARTICLE ; OXIDE
收录类别	SCI
语种	英语
WOS记录号	WOS:000356755000053
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98905]
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yao,Zhu, Jian-guo,Lu, Qing-gang. Experimental Study on Nitrogen Transformation in Combustion of Pulverized Semi-coke Preheated in a Circulating Fluidized Bed[J]. ENERGY & FUELS,2015,29(6):3985-3991.
APA	Yao, Yao,Zhu, Jian-guo,&Lu, Qing-gang.(2015).Experimental Study on Nitrogen Transformation in Combustion of Pulverized Semi-coke Preheated in a Circulating Fluidized Bed.ENERGY & FUELS,29(6),3985-3991.
MLA	Yao, Yao,et al."Experimental Study on Nitrogen Transformation in Combustion of Pulverized Semi-coke Preheated in a Circulating Fluidized Bed".ENERGY & FUELS 29.6(2015):3985-3991.