煤炭转化2012，Vol.35Issue(3)：6-14,9.
煤程序升温与等温热解特性及动力学比较研究
CAMPARATIVE STUDY ON COAL PYROLYSIS VIA PROGRAMMED AND ISOTHERMAL HEATING
摘要
Abstract
This article investigated the volatile evolution characteristics and estimated the corresponding reaction kinetics of five coal samples belonging to different coal rank in the pyroly-sis via programmed and isothermal heating realized in thermogravimetric analyzer and micro fluidized bed (MFB) respectively. The pyrolysis via programmed heating demonstrated that the release sequence of the volatile gases was CO2 , CO, CH4 and H2 in succession, whereas the isothermal pyrolysis in MFB showed that the gas release of CO and CO2 was also preceded CH4 and H2. For the isothermal fast pyrolysis in MFB, the activation energy of the five coal samples was 17 kJ/mol-35 kj/mol, obviously lower than that for the pyrolysis via programmed heating. The reaction order of CO2 and CO was found to be close to 1 and that for the formation of CH4 and H2 obviously deviated from 1, which demonstrates essentially the difference in the formation mechanism for these two groups of volatile gases.关键词
煤/热解/微型流化床/反应动力学/等温反应Key words
coal, pyrolysis, micro fluidized bed, reaction kinetics, isothermal reaction分类
化学化工引用本文复制引用
蔡连国,刘文钊,余剑,岳君容,高士秋,许光文..煤程序升温与等温热解特性及动力学比较研究[J].煤炭转化,2012,35(3):6-14,9.基金项目
国家重点基础研究规划(973)项目(2011CB201304)、国家自然科学基金委员会与神华集团有限公司联合资助项目(51174283)、国家重大科学仪器设备开发专项项目(2011YQ120039)和中国科学院战略性先导科技专项项目(XDA07010100). （973）
