Non-isothermal Kinetics of Pyrolysis of Three Kinds of Fresh Biomass

作     者：MIN Fan-fei ZHANG Ming-xu CHEN Qing-ru 

作者机构：Department of Matertal Sctence and Engmeermg Anhut Umverstty of Sctence and Technology Huaman Anhut 232001 China Key Laboratory of Modern Mining Engineering of Anhui Province Huainan Anhui 232001 China School of Chemical and Engineering Technology China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China 

出 版 物：《Journal of China University of Mining and Technology》 (中国矿业大学学报（英文版）)

年 卷 期：2007年第17卷第1期

页      面：105-111页

核心收录：

学科分类：082903[工学-林产化学加工工程] 08[工学] 0829[工学-林业工程] 

基　　金：Project 50474056 supported by the National Natural Science Foundation of China 

主　　题：non-isothermal kinetics fresh biomass pyrolysis thermogravimetric analysis 

摘      要：The pyrolysis kinetics of three different kinds of fresh biomass (grass: triple A, wheat straw, corn straw) in nitrogen flow were studied by thermogravimetric analysis at five different heating rates. The kinetic parameters of the pyrolysis process were calculated using the method of Ozawa-Flynn-Wall and the mechanism of reactions were investi- gated using the method of Popescu. It was found that the values of activation energy varied in different temperature ranges. The pyrolysis processes are well described by the models of Zhuravlev (Zh) and valid for diffusion-controlled between 200 ℃ and 280 ℃, by Ginstling-Brounshtein (G-B), valid for diffusion-control between 280 ℃ and 310 ℃, for first-order chemical reaction between 310℃ and 350 ℃, by Zhuravlev (Zh) valid for diffusion-control between 350 ℃ and 430 ℃ and by the one-way transport model when temperatures are over 430 ℃.