燃料化学学报2011，Vol.39Issue(8)：585-589,5.
棉秆催化热解特性及动力学建模研究
Catalytic characteristic and kinetic modeling of cotton stalk pyrolysis
摘要
Abstract
The kinetic characteristic of cotton stalk pyrolysis catalyzed by six kinds of additives including NaOH, Na2CO3 , Na2SiO3, NaCl, TiO2 and HZSM-5 was investigated by using the thermogravimetric analysis. The weight loss behavior was simulated by assuming the three main components of the cotton stalk sample to experience the first order parallel and independent pyrolysis reactions. The pyrolysis kinetic parameters were estimated by the nonlinear least squares algorithm. The results show that the kinetic parameters of the three components are changed by adding additives. Under the action of the alkaline additives, the activation energies of cellulose and hemicellulose can be reduced to a greater degree. The stronger the basicity of the additives, the lower the pyrolysis activation energies for the cellulose and the higher for the hemicellulose. Neutral additive NaCl has little effect on the pyrolysis activation energy. Surface acidic additives make the pyrolysis activation energies increase for the cellulose and hemicellulose. However, all the additives have no significant effects on the pyrolysis activation energies for lignin.关键词
生物质/棉秆/催化热解/动力学/模型Key words
biomass/cotton stalk/catalytic pyrolysis/kinetics/model分类
化学化工引用本文复制引用
陈明强,齐雪宜,王君,陈明功,闵凡飞,刘少敏,并波..棉秆催化热解特性及动力学建模研究[J].燃料化学学报,2011,39(8):585-589,5.基金项目
国家自然科学基金(20676002) （20676002）
国家重点基础研究发展规划(973计划,2007CB210206) （973计划,2007CB210206）
国家高技术研究发展计划(863计划,2009 AA05Z408). （863计划,2009 AA05Z408）
