中国电机工程学报Issue(29)：63-68,6.
热解条件对煤焦孔结构和反应性的影响
Effects of Pyrolysis Conditions on the Pore Structure and Reactivity of Chars
摘要
Abstract
Lignite, sub-bituminous and bituminous coals were pyrolyzed in pressurised thermogravimetric analyser (PTGA), muffle furnace (MF) and drop-tube furnace (DTF). The effects of pyrolysis conditions on the char properties were studied. Mercury porosimetry and N2, CO2 adsorption were used to obtain pore structures of chars. The CO2 gasification reactivity was determined by PTGA at 1 173K. Chars were also analyzed with scanning electron microscope and a CHN elemental analyzer. The results indicate that low pyrolysis pressure, high heating rate and short residence time under high temperature substantially increase the mesoporosity and CO2 gasification reactivity, but reduce both microporosity and the macropore fractal dimension. The reactivity of char is mainly influenced by the residual volatile matter content, the second is macroporosity and mesoporosity, and has no relation to microporosity.关键词
煤焦/热解/孔隙结构/气化反应活性Key words
char/pyrolysis/pore structure/gasification reactivity分类
能源科技引用本文复制引用
温雨鑫,徐祥,肖云汉..热解条件对煤焦孔结构和反应性的影响[J].中国电机工程学报,2013,(29):63-68,6.基金项目
国家863高技术研究发展计划项目(2006AA05A103)；国家自然科学基金项目(51006106)；科技部国际合作项目(2010DFB705602)；中国科学院知识创新工程重要方向性项目(KGCX2-YW-348)。The National High Technology Research and Development of China 863 Program (2006AA05A103). （2006AA05A103）
Project Supported by National Natural Science Foundation of China (51006106) （51006106）
Projects of International Cooperation (2010DFB705602), Ministry of Science and Technology of China （2010DFB705602）
Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences (KGCX2-YW-348) （KGCX2-YW-348）
