燃料化学学报2013，Vol.41Issue(8)：958-965,8.
生物质炭燃烧特性与动力学分析
Investigation on combustion characteristics and kinetics of bio-char
摘要
Abstract
The bio-char from cotton stalk and sawdust was prepared using a tubular fixed bed,and the combustion characteristics of the resulted bio-chars were analyzed with a thermogravimetric analyzer.Based on the comprehensive reaction rate equation,the gas-solid reaction mechanism of the bio-char combustion was deduced,and the thermogravimetric data of the bio-char combustion were fitted.The results indicate that as the carbonization temperature increases,the ignition temperature and burnout temperature of the bio-chars increase,while the combustion performance index (S) decreases.The combustion characteristics of the cotton stalk charcoal are better than that of the sawdust charcoal.The reaction mechanisms for the cotton stalk charcoal combustion are different in different temperature ranges.The charcoal combustion in lower temperature range follows the planar internal diffusion reaction mechanism,while the globular interface reaction mechanism applies to higher temperature range.The combustion reaction of sawdust charcoal follows globular interface reaction mechanism during the whole oxidation process.The reaction reactivity of bio-char combustion can't be judged by the calculated activation energy.关键词
生物质/生物质炭/燃烧特性/气固反应机理/反应动力学Key words
biomass/ bio-char/ combustion characteristic/ gas-solid reaction mechanism/ kinetics分类
能源科技引用本文复制引用
熊绍武,张守玉,吴巧美,郭熙,董爱霞,陈川,郑红俊,邓文祥,刘大海..生物质炭燃烧特性与动力学分析[J].燃料化学学报,2013,41(8):958-965,8.基金项目
国家科技支撑计划(2012BAA04B01). （2012BAA04B01）
