摘要
在15-20kg／h规模的沉降式加压气化实验装置上，实验研究了高温条件下，不同O／C摩尔比对生物质气化特性的影响。并根据实验气化炉的边界条件，建立了相应的气化模型。模型计算结果与实验结果吻合较好，模型能够很好的预测气化参数对生物质气流床气化特性的影响。研究结果表明：在气化还原反应区，高温有利于气化反应向吸热方向进行；O／C比在1．0—2．0范围内，随O／C比的增加，CO、H2均呈现先增加后减小的趋势，可燃气体成分（CH4＋H2＋CO）占总合成气的50％左右；部分燃烧反应区温度在1600K以上时。碳转化率大于90％，冷煤气效率达到50％左右。
The influence, of different oxygen to carbon molar ratios, on biomass gasification characteristics, has been studied on a 15 -20kg/h lab-scale pressurized down-flow gasifier under high temperature conditions; a corresponding gasification model has been built, in accordance with the boundary conditions of the experimental gasifier, which can be used to perfectly predict the influence of gasifying parameters on gasification characteristics. Results show that high temperature in the reduction zone helps to impel reaction in endothermic direction. With rising O/C molar ratio, in the range of 1.0 - 2.0, both CO and H2 content tend to grow at first and then reduce. The combustible content （CH4 ＋H2 ＋ CO） accounts for about 50 % of the total syngas. In some parts of the combustion zone where temperature gets above 1600K, carbon conversation rate exceeds 90% and cold gas efficiency gets to about 50% .
出处
《动力工程》
EI
CSCD
北大核心
2007年第4期629-634,共6页
Power Engineering
基金
上海市科研计划项目资助(05XD14026)
日本学术振业会(JSPS)项目基金
关键词
能源与动力工程
生物质
气化
计算模型
高温
energy and power engineering
biomass
gasification
calculation model
high-temperature
