燃料化学学报Issue(9)：1040-1046,7.
热解过程中生物质半焦比热容的测定
Determination of specific heat capacity of biomass char during pyrolysis
摘要
Abstract
The specific heat capacities of chars during primary pyrolysis of biomass with different conversion and the heat capacities of virgin biomass were determined.The ratio method was employed to measure the specific heat capacities of two biomass samples and their pyrolyzed chars through thermogravimetry and differential scanning calorimetry ( TG-DSC).A mathematical model was developed to calculate values of specific heat of chars.The results show that the specific heat capacitei s of the two biomass samples and their derived chars increase linearly within 60~200℃.The values oft he specific heat capacity fo the chars are lower than those fo the virgin biomass samples.The specific heat of chars decreases as the extent of pyrolysis increases.The calculated specific heat capacities from the developed mathematical model are quite close to those me asured by TG-DSC analyses eb twe n 150~200℃.关键词
生物质/热解/焦炭/比热容/热分析Key words
b iomsa s/primary pyrolysis/biochar/specific heat capacity/TG-DSC分类
能源科技引用本文复制引用
陈群,庞任重,陈熙,杨锐明,禚玉群,陈昌和..热解过程中生物质半焦比热容的测定[J].燃料化学学报,2014,(9):1040-1046,7.基金项目
国家自然科学基金（51276099）；清华大学自主科研计划（2011Z02147）。 （）
