Behaviour of Gaseous Chlorine and Alkali Metals During Biomass Thermal Utilisation

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	Behaviour of Gaseous Chlorine and Alkali Metals During Biomass Thermal Utilisation
	Wei XL(魏小林); Schnell U; Hein KRG
刊名	Fuel
	2005
通讯作者邮箱	xlwei@imech.ac.cn ; schnell@ivd.uni-stuttgart.de
卷号	84 期号:7-8 页码:841-848
ISSN号	0016-2361
通讯作者	Schnell, U (reprint author), Univ Stuttgart, Inst Proc Engn & Power Plant Technol, IVD, Pfaffenwaldring 23, D-70569 Stuttgart, Germany.
中文摘要	The behaviour of gaseous chlorine and alkali metals of three sorts of biomass (Danish straw, Swedish wood, and sewage sludge) in combustion or gasification is investigated by the chemical equilibrium calculating tool. The ranges of temperature, air-to-fuel ratio, and pressure are varied widely in the calculations (T=400-1800 K, gimel=0-1.8, and P=0.1-2.0 MPa). Results show that the air excess coefficient only has less significant influence on the release of gaseous chlorine and potassium or sodium during combustion. However, in biomass gasification, the influence of the air excess coefficient is very significant. Increasing air excess coefficient enhances the release of HCl(g), KOH(g), or NaOH(g) as well as it reduces the formation of KCl(g), NaCl(g), K(g), or Na(g). In biomass combustion or straw and sludge gasification, increasing pressure enhances the release of HCl(g) and reduces the amount of KCI(g), NaCl(g), KCI(g), or NaOH(g) at high temperatures. However, during wood gasification, the pressure enhances the formation of KOH(g) and KCI(g) and reduces the release of K(g) and HCl(g) at high temperatures. During wood and sewage sludge pyrolysis, nitrogen addition enhances the formation of KCN(g) and NaCN(g) and reduces the release of K(g) and Na(g). Kaolin addition in straw combustion may enhance the formation of potassium aluminosilicate in ash and significantly reduces the release of KCl(g) and KOH(g) and increases the formation of HCl(g).
学科主题	力学
类目[WOS]	Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	FLUIDIZED-BED COMBUSTION ; DIBENZO-P-DIOXINS ; ASH DEPOSITION ; STRAW PYROLYSIS ; FIRED BOILERS ; GAS-PHASE ; COAL ; GASIFICATION ; COCOMBUSTION ; POTASSIUM
收录类别	SCI
语种	英语
WOS记录号	WOS:000227650800008
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17106]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Wei XL,Schnell U,Hein KRG. Behaviour of Gaseous Chlorine and Alkali Metals During Biomass Thermal Utilisation[J]. Fuel,2005,84(7-8):841-848.
APA	魏小林,Schnell U,&Hein KRG.(2005).Behaviour of Gaseous Chlorine and Alkali Metals During Biomass Thermal Utilisation.Fuel,84(7-8),841-848.
MLA	魏小林,et al."Behaviour of Gaseous Chlorine and Alkali Metals During Biomass Thermal Utilisation".Fuel 84.7-8(2005):841-848.