褐煤与油菜秸秆共燃烧性能与动力学分析  

Co-combustion performance and kinetic analysis of lignite and rape straw

作　　者：付莹莹 李雪梅 何润霞[1,2] 宋银敏 智科端[1,2] 刘全生 Fu Yingying;Li Xuemei;He Runxia;Song Yinmin;Zhi Keduan;Liu Quansheng(College of Chemical Engineering,Inner Mongolia University of Technolegy,Huhhot 010051,China;Inner Mongolia Key Laboratory of High-Value Funtional Utilization of Low Rank Carbon Resources,Huhhot 010051,China)

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010051 [2]内蒙古自治区低阶碳质资源高值功能化利用重点实验室,内蒙古呼和浩特010051

出　　处：《煤炭与化工》2023年第3期143-149,共7页Coal and Chemical Industry

摘　　要：选用胜利褐煤和油菜秸秆为研究对象,利用热重分析仪考察了褐煤、油菜秸秆及二者共混物的燃烧性能,分析对比了共混物燃烧的协同效应,并对其进行了动力学分析。结果表明,油菜秸秆的掺混改善了褐煤的着火性能和综合燃烧性能。共混物挥发分燃烧过程的协同效应较弱,而固定碳燃烧过程的协同效应较大,当油菜秸秆掺混比例为30%时协同效应最好。动力学分析表明,油菜秸秆燃烧过程的活化能高于褐煤,尤以固定碳的燃烧过程更明显,而共混物的活化能处于油菜秸秆与褐煤之间,且低于理论计算活化能,进一步说明褐煤和油菜秸秆在共燃烧过程中存在协同效应。Shengli lignite and rape straw were selected as the research objects,the combustion properties of lignite,rape straw and their blends were investigated by thermogravimetric analyzer,the synergistic effect of combustion of the blends was analyzed and compared,and its kinetics was analyzed.The results showed that the blending of rape straw improved the ignition performance and comprehensive combustion performance of lignite.The synergistic effect of volatiles combustion process of blends was weak,while the synergistic effect of fixed carbon combustion process was larger,and the synergistic effect was the best when the blending ratio of rape straw was 30%.Kinetic analysis showed that the activation energy of rape straw combustion process was higher than that of lignite,especially the combustion process of fixed carbon was more obvious,however,the activation energy of the blend was between rape straw and lignite,and lower than the theoretical calculated activation energy,which further indicated that there was a synergistic effect between lignite and rape straw in the co-combustion process.

关 键 词：胜利褐煤 油菜秸秆 燃烧性能 共燃烧 协同效应 动力学 

分 类 号：O643[理学—物理化学]