文献类型：期刊文献

英文题名：Effect of torrefaction on pinewood pyrolysis kinetics and thermal behavior using thermogravimetric analysis

作者：He, Qing[1];Ding, Lu[3];Gong, Yan[1];Li, Weifeng[1];Wei, Juntao[1];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China;[2]Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan 750021, Peoples R China;[3]Tokyo Inst Technol, Dept Environm Sci & Technol, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268503, Japan

年份：2019

卷号：280

起止页码：104

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20190706494580);WOS:【SCI-EXPANDED(收录号:WOS:000460896800012)】；

基金：This work was supported by National Key R&D Program of China (2017YFB0602601) and National Natural Science Foundation of China (21878093).

语种：英文

外文关键词：Torrefaction; Pyrolysis; Iso-conversion method; Master plots; Thermodynamic parameters

摘要：Torrefaction is a promising pretreatment technology for biomass thermochemical conversion. In this study, pinewood (PW) and PW250 (torrefied at 250 degrees C) were prepared for pyrolysis. Torrefaction was carried out in a fixed bed reactor and the pyrolysis was studied by thermogravimetric analyzer using six different heating rates. The results showed that the content of hemicellulose in biomass decreased while cellulose and lignin increased after torrefaction. Moreover, the C-O peaks of torrefied biomass was strengthened in FTIR spectrum and the crystallinity degree was enhanced according to XRD analysis. The performance of devolatilization and heat transfer were improved for PW250 while the volatiles only decreased by only 4%. Activation energy was calculated by three iso-conversion methods. It was found that the PW followed D3 diffusion model, while the PW250 followed D1 diffusion model and tended to higher order reaction model at high conversions. In addition, the thermodynamic parameters were compared.