非等温热重法对潞安煤焦-H_2O气化反应动力学的研究  

Experimental study on gasification kinetics of Lu’an coal char with steam by non-isothermal thermogravimetry

作　　者：丁华[1] 姜英[1] 陈亚飞[1] 李文华[2] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013 [2]中国煤炭学会煤化学专业委员会,北京100013

出　　处：《煤炭学报》2010年第4期666-669,共4页Journal of China Coal Society

摘　　要：用非等温热重法考察了潞安煤焦的水蒸气气化反应,分析了升温速率及水蒸气分压改变对煤焦气化反应性的影响。动力学计算结果表明:潞安煤焦气化行为可用体积反应模型来描述;通过求取的动力学参数可以发现,活化能与指前因子存在明显的动力学补偿效应,补偿效应可由过渡态理论给予解释。Steam gasification of Lu’an coal char was studied by non-isothermal thermogravimetry.The effect of various heating rates and steam differential pressures on char gasification was analyzed.Kinetics results show that Lu’an char gasification behavior can be described by volume reaction model.It is found by kinetics parameters that there is obvious compensation effect between activation energy and pre-exponential factor.The compensation effect can be explained by transition state theory.

关 键 词：非等温热重法 煤焦 水蒸气 气化 动力学 

分 类 号：TQ546[化学工程—煤化学工程]