文献类型：期刊文献

英文题名：Release and transformation behavior of Cl during pyrolysis of torrefied rice straw

作者：Chen, Handing;Chen, Xueli[1];Qiao, Zhi;Liu, Haifeng[1]

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

年份：2016

卷号：183

起止页码：145

外文期刊名：FUEL

收录：;EI(收录号：20162602539082);WOS:【SCI-EXPANDED(收录号:WOS:000381619400017)】；

基金：The authors are grateful for Program for New Century Excellent Talents in University (NCET-12-0854), 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：Torrefied straw; Pyrolysis; Chlorine; Release

摘要：Pyrolysis experiments in a fixed-bed reactor at 800-1200 degrees C were carried out to compare the release and transformation behavior of Cl between raw and torrefied rice straw. The impact of torrefaction pretreatment on total release of Cl during rice straw high temperature pyrolysis has also been assessed. The influence factors, including volatile matter, particle structure, surface elements enrichment and occurrence forms of Cl, which are different between raw and torrefied rice straw, have been studied. The results show that Cl release ratios of torrefied rice straw at 250 and 300 degrees C are lower than that of raw rice straw during pyrolysis at 800-1200 degrees C. At 900-1200 degrees C, release ratio of Cl of torrefied rice straw decreases with the torrefaction severity. Torrefaction pretreatment at 250 and 300 degrees C inhibits the total release of Cl during rice straw pyrolysis at 1000-1200 degrees C. Enrichment of Cl on surface for torrefied rice straw accelerates the release of Cl. The removed volatiles during torrefaction would reduce the release of Cl during pyrolysis, and generated organochlorine (or C - Cl) during torrefaction has the same inhibiting effect on the release of Cl. Surface morphology and specific surface area of pyrolysis char are different between raw and torrefied rice straw. Less specific surface area for pyrolysis char of torrefied rice straw at 250 and 300 degrees C would restrict the release of Cl. (C) 2016 Elsevier Ltd. All rights reserved.