摘要
采用不同水温通过浸泡的方式对小麦秸秆、稻壳和桐木木屑进行水洗,对原样和水洗后样品分别进行燃料特性分析、热失重分析和灰熔融特性分析,研究了水洗对生物质燃料特性及燃烧特性的影响。结果表明,水洗能有效脱除生物质中对锅炉运行造成危害的K、Na、Cl和S元素,使燃烧过程中挥发分的析出和燃烧略有滞后,改善了小麦秸秆的灰熔融特性。随着水温增大,除Cl外,其他三种元素的脱除率单调变化,小麦秸秆的灰渣逐渐变"短"。
Wheat straw, rice hull and candlenut wood were washed by submerging with water of different temperatures. The effect of washing on fuel properties and combustion characteristics of biomass was studied via fuel analysis, thermogravimetric analysis and ash fusibility measurement. The results show that washing can effectively remove K, Na, C1 and S of biomass which may be harmful to boiler operation. After washing, the volatile release and ignition delays and the fusion temperatures of wheat straw ash increase. As the water temperature increases, the removal rate of K, Na, S changes monotonously and the slag of wheat straw turns into short slag gradually.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第7期1239-1242,共4页
Journal of Engineering Thermophysics
关键词
水洗
生物质
燃料特性
燃烧特性
washing
biomass
fuel properties
combustion characteristics
