文献类型：期刊文献

英文题名：Effect of torrefaction on the properties of rice straw high temperature pyrolysis char: Pore structure, aromaticity and gasification activity

作者：Chen, Handing[1];Chen, Xueli[1];Qin, Yueqiang[1];Wei, Juntao[1];Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, POB 272, Shanghai 200237, Peoples R China

年份：2017

卷号：228

起止页码：241

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20170203230462);WOS:【SCI-EXPANDED(收录号:WOS:000397928000031)】；

基金：The authors are grateful for Program for the National Natural Science Foundation of China (21306050) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Torrefaction; Pyrolysis; Surface area; Gasification activity; Graphitization

摘要：The influence of torrefaction on the physicochemical characteristics of char during raw and water washed rice straw pyrolysis at 800-1200 degrees C is investigated. Pore structure, aromaticity and gasification activity of pyrolysis chars are compared between raw and torrefied samples. For raw straw, BET specific surface area decreases with the increased torrefaction temperature at the same pyrolysis temperature and it approximately increases linearly with weight loss during pyrolysis. The different pore structure evolutions relate to the different volatile matters and pore structures between raw and torrefied straw. Torrefaction at higher temperature would bring about a lower graphitization degree of char during pyrolysis of raw straw. Pore structure and carbon crystalline structure evolutions of raw and torrefied water washed straw are different from these of raw straw during pyrolysis. For both raw and water washed straw, CO2 gasification activities of pyrolysis chars are different between raw and torrefied samples. (C) 2016 Elsevier Ltd. All rights reserved.