烟草科技Issue(11)：38-41,50,5.
烤烟的燃烧特性及动力学分析
Combustion Characteristics of Flue-cured Tobacco and its Kinetic Analysis
摘要
Abstract
In order to investigate the effects of combustion conditions on the thermal behavior of flue-cured tobacco, the thermal decomposition and combustion characteristics of flue-cured tobacco at different oxygen concentrations and heating rates were investigated with thermogravimetric analysis, and the kinetics at volatilization stage and char combustion stage were analyzed with Coats-Redfern method and Malek method. The results showed that: 1) The thermal decomposition process of flue-cured tobacco could be divided into dehydration, volatilization, char combustion and burnout stages. 2) The changes of combustion conditions significantly affected the thermal decomposition characteristics of flue-cured tobacco. 3) The combustion characteristic index of flue-cured tobacco increased with the increases of oxygen concentration and heating rate. 4) A3 model was used in the kinetic calculations at volatilization stage,while F1 model was used in the kinetic calculations at char combustion stage, at different combustion conditions, and the relevant activation energies and exponential prefactors were obtained. The pyrolysis and combustion of flue-cured tobacco accelerated with the increase of oxygen concentration or heating rate.关键词
烤烟/热重分析/燃烧特性/动力学分析Key words
Flue-cured tobacco/Thermogravimetric analysis/Combustion characteristic/Kinetic analysis分类
轻工纺织引用本文复制引用
夏鸣,李金广,乔国宝,姜建军,胡永华..烤烟的燃烧特性及动力学分析[J].烟草科技,2012,(11):38-41,50,5.基金项目
安徽中烟工业有限责任公司科技计划项目"离线热分析联用技术的构建及其在烟草研究中的应用"(20111007). （20111007）
