文献类型：期刊文献

英文题名：Decomposition and gasification of pyrolysis volatiles from pine wood through a bed of hot char

作者：Sun, Qingsong[1];Yu, Sang[1];Wang, Fuchen[2];Wang, Jie[1]

机构：[1]E China Univ Sci & Technol, Dept Chem Engn Energy, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Coal Gasificat, Minist Educ, Shanghai 200237, Peoples R China

年份：2011

卷号：90

期号：3

起止页码：1041

外文期刊名：FUEL

收录：;EI(收录号：20110913700258);WOS:【SCI-EXPANDED(收录号:WOS:000287476000017)】；

基金：This study is sponsored by the Shanghai Pujiang Program (Project no.: 07pj14028) and the Program for Changjiang Scholars and Innovative Research Team in University in China (IRT0620). The authors thank associate professor F. Wang, associate professor J.Q. Cao and Mr. Z.Y. Wang for their assistance in the research. The authors appreciate two anonymous reviewers for their invaluable advice in the revision of the manuscript.

语种：英文

外文关键词：Pine wood; Pyrolysis; Gasification; Catalytic tar cracking; Char

摘要：Pine wood was pyrolyzed in a fixed bed reactor at a heating rate of 10 degrees C and a final temperature of 700 degrees C, and the resultant volatiles were allowed to be secondarily cracked through a tubular reactor in a temperature range of 500-700 degrees C with and without packing a bed of char. The thermal effect and the catalytic effect of char on the cracking of tar were investigated. An attempt was made to deconvolute the intermingled contributions of the char-catalyzed tar cracking and the char gasification to the yields of gaseous and liquid products. It was found that the wood char (charcoal) was catalytically active for the tar cracking at 500-600 degrees C, while at 650-700 degrees C, the thermal effect became a dominant mode of the tar cracking. Above 600 degrees C, the autogenerated steam gasified the charcoal, resulting in a marked increase in the yield of gaseous product and a significant change in the gas composition. An anthracite char (A-char), a bituminous coal char (B-char), a lignite char (L-char) and graphite also behaved with catalytic activities towards the tar cracking at lower temperature, but only L-char showed reactivity for gasification at higher temperature. (C) 2010 Elsevier Ltd. All rights reserved.