Application of distributed activation energy model and Coats-Redfern integration method in the study of industrial lignin pyrolysis kinetics
文献类型： 外文期刊
作者： Chen, Long 1 ; Hu, Jian 1 ; Han, Qian 1 ; Xie, Anqi 1 ; Zhou, Zhi 1 ; Yang, Jiankui 1 ; Tang, Qiyuan 1 ; Mi, Baobin 1 ; Wu, Fangfang 1 ;
作者机构： 1.Hunan Agr Univ, Coll Agron, Coll Biosci & Biotechnol, Hunan Engn Res Ctr Biochar,Sch Chem & Mat Sci, Changsha 410128, Hunan, Peoples R China
2.Hunan Acad Agr Sci, Res Inst Vegetables, Changsha 410125, Peoples R China
关键词： Industrial lignin; Pyrolysis behavior; Kinetics; DAEM; Coats-Redfern method
期刊名称：BIOMASS CONVERSION AND BIOREFINERY （ 影响因子：4.05； 五年影响因子：4.103 ）
ISSN： 2190-6815
年卷期：
页码：
收录情况： SCI
摘要： This study addressed the kinetics characteristics and pyrolysis behavior of waste industrial lignin in a thermogravimetric analyzer. DAEM and Coats-Redfern integration methods were employed to evaluate the kinetic parameters at varying heating rates (10-30 degrees C/min). The physicochemical inspection showed that the industrial lignin had excellent prospects to produce finest chemicals. The TGA results illustrated that the pyrolysis process of industrial lignin could be divided into three stages, including the water loss stage, massive decomposition stage (255-376celcius), and charring stage (392-508celcius). The activation energies calculated by DAEM are 12.7-23.9 kJ/mol as V/V* rose and 21-27 kJ/mol by the Coats-Redfern integration method of different pyrolysis stages. In addition, the average activation energy of the massive decomposition stage was higher than that of the charring stage. The similar activation energies calculated by both DAEM and Coats-Redfern methods confirmed the accuracy of the kinetic calculations.
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