煤炭转化2017，Vol.40Issue(6)：71-77,7.
O2/CO2气氛下生物质三组分的燃烧特性
Combustion Characteristics of Three Biomass Components in the O2/CO2 Atmosphere
摘要
Abstract
O2/CO2 combustion characteristics of cellulose and hemicellulose and lignin were studied using thermogravimetric analyzer.The influence of the combustion atmosphere (O2/CO2 , O2/N2 ),oxygen volume fraction (10%,21% and 40%)and heating rate (10 ℃/min,20 ℃/min and 30 ℃/min)on O2/CO2 combustion characteristics were investigated.The results show that the three-biomass components combustion process appeare varying degrees of delay in O2/CO2 atmosphere compared that in O2/N2 atmosphere and it mainly reflects in the coke combustion stage.The lignin combustion delay is more obvious than that of cellulose and hemicellulose,due to the higher lignin coke content.In O2/CO2 atmosphere,the increase of oxygen volume fraction has less influence on volatile matter combustion,due to the high oxygen content of the three bio-mass components.However,there is a remarkable impact on coke combustion with the increase of oxygen volume fraction,and the coke combustion stage moves to the low temperature zone, the comprehensive combustion characteristics improve significantly.In O2/CO2 atmosphere,the combustion process of three biomass components move towards higher temperature zone with the heating rate increasing.There are significantly increasing of weight loss rate of cellulose and hemicellulose in the stage of volatile separating out;in the stage of coke combustion,the weight loss rate of lignin increase significantly.The comprehensive combustion characteristics of three biomass components improve.Compared with cellulose and hemicellulose,lignin combustion reactivity and combined combustion characteristics are relatively poor.关键词
纤维素/半纤维素/木质素/O2/CO2/燃烧特性/热重分析Key words
cellulose/hemicellulose/lignin/oxygen-enriched combustion characteristics/thermogravimetric analysis分类
化学化工引用本文复制引用
王廷旭,方庆艳,马仑,郭岸龙,张成,陈刚..O2/CO2气氛下生物质三组分的燃烧特性[J].煤炭转化,2017,40(6):71-77,7.基金项目
国家自然科学基金资助项目(51676076). （51676076）
