Correlations of kinetic parameters in biomass pyrolysis with solid residue yield and lignin content
Correlations of kinetic parameters in biomass pyrolysis with solid residue yield and lignin content
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DOI：
10.1016/j.fuel.2010.08.023
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发表时间：
2011-01-01
期刊：
影响因子：
7.4
通讯作者：
Mae, Kazuhiro
中科院分区：
文献类型：
--
作者：
Hashimoto, Kenji;Hasegawa, Isao;Mae, Kazuhiro
使用热重分析数据进行各种类型的生物质（树干、树皮、叶、壳、牧草、食物残渣和多糖）以及由纤维素和木质素组成的合成生物质的热解的动力学分析。生物质热解的反应速率可以用一个简单的n级反应模型来表示。通过对热重曲线的微分和非线性估计方法，对反应动力学参数（频率因子k（0）、活化能E和反应级数n）进行了估计。38个生物质样品和9个合成生物质样品的热解的速率参数成功地相关的固体残渣产率Ω的图表显示的相关性。此外，ω和木质素含量L之间的线性相关性被发现在木质生物质。这使得生物质热解的动力学参数能够使用ω值来估计，ω值从热重测量获得或从生物质原料的L值估计。(C)2010爱思唯尔有限公司版权所有。
A kinetic analysis of the pyrolysis of various types of biomass (trunk, bark, leaf, shell, herbage, food dregs, and polysaccharide) as well as synthetic biomass consisting of cellulose and lignin was performed using thermogravimetric analysis data. The reaction rates of biomass pyrolysis were found to be expressed simply by a single nth-order reaction model. The kinetic parameters (frequency factor k(0), activation energy E, and reaction order n) were estimated first by differentiating the thermogravimetric curves and then by the nonlinear estimation method. The rate parameters of the pyrolysis of both 38 biomass samples and 9 synthetic biomass samples were successfully correlated in terms of the solid residue yield omega; charts are presented showing the correlations. Furthermore, a linear correlation was found between omega and the lignin content L in the woody biomass. This allows the kinetic parameters of biomass pyrolysis to be estimated using the value of omega, which is obtained from thermogravimetric measurements or estimated from the value of L for the biomass feedstock. (C) 2010 Elsevier Ltd. All rights reserved.