煤沥青热反应动力学研究  

Kinetics research on coal tar pitch and its extraction

作　　者：徐传礼[1] 程相林[1] 王留成[1] 赵建宏[1] 王建设[1] 宋成盈[1] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450003

出　　处：《炭素》2015年第4期42-45,48,共5页Carbon

基　　金：中国石油科技创新基金资助（2015D-5006-0408）;郑州大学优秀青年发展基金

摘　　要：对煤沥青在升温速率分别为5℃／min、10℃／min、15℃／min和20℃／min条件下进行热重分析，探究了中温沥青与精制沥青热分解过程。利用Kissinger法、Flynn—Wall—Ozawa法、Friedman法分别求出了中温沥青与精制沥青的表观活化能E，利用Kissinger法求出指前因子1rn，采用Coats—Redfern积分法判定得出热分解过程反应机理函数积分式。结果表明，中温煤沥青表现出比精制沥青更强的温度敏感性，中温煤沥青比精制沥青表现出更强的反应活性。The kinetics of pyrolysis characteristics of coal tar pitch were investigated by thermogravimetric analysis at heating rates of 5, 10, 15, 20℃/min, respectively. The results show that pyrolysis process of coal tar pitch includes three stages. The apparent activation energy was studied by the model of Kissinger, Flynn-Wall-Ozawa and Friedman, respectively. The pre-exponential factor lnA was investigated by the method of Kissinger. With Coats-Redfern model, the reaction mechanism function of pyrolysis process could be determined. The coal tar pitch shows more significant temperature susceptibility and higher reactivity.

关 键 词：煤沥青 热分析 动力学 

分 类 号：TQ522.65[化学工程—煤化学工程]