生物质半焦微波诱导CH_4/CO_2重整反应动力学研究  

Kinetic study on microwave-induced reforming of CH_4 by CO_2 over a biomass-derived char

作　　者：李龙之[1] 宋占龙[2] 马春元[2] 赵希强[2] 王孚懋[1] 

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266590 [2]山东大学燃煤污染物减排国家工程实验室,山东济南250061

出　　处：《煤炭学报》2015年第6期1457-1462,共6页Journal of China Coal Society

基　　金：山东科技大学人才引进科研启动基金资助项目(2013RCJJ018);山东省优秀中青年科学家科研奖励基金资助项目(BS2014NJ014)

摘　　要：为研究微波辐射下CH4/CO2重整反应的动力学规律,在微波加热综合实验系统上使用生物质微波热解初生半焦进行CH4/CO2重整的实验研究。通过实验结果的比较和统计分析方法的验证,筛选出合适的重整反应动力学模型,进而利用该模型开展动力学特征值的计算与结果分析。计算得到,微波加热和常规加热方式下重整反应的活化能分别为29.40 k J/mol和54.97 k J/mol。相比于传统方式下的重整反应,微波辐照半焦诱导重整反应的活化能降幅达到46.5%。分析认为,微波辐射下"热点效应"是降低重整反应活化能的主要原因。In order to study the dynamic behavior of CH4 reforming by CO2 under microwave irradiation,an experimental study of CH4 reforming by CO2 was conducted on an experimental system with microwave heating,with biomass char from microwave pyrolysis served as catalyst. A suitable kinetic model of CH4 reforming reaction was developed through the comparison of experimental results and identification using statistical analysis method. Then the calculation of kinetic characteristics value and further analysis was performed based on this model. The results show that activation energy with microwave heating and electrical heating are 29. 40 k J / mol and 54. 97 k J / mol respectively. A decrease up to46. 5% in activation energy with microwave heating is achieved,compared to that obtained in the reforming reaction with electrical heating. The reduction in activation energy is due to hot spots effect under microwave irradiation.

关 键 词：重整 动力学 微波 活化能 半焦 

分 类 号：TE665.3[石油与天然气工程—油气加工工程]