FCC卸出剂用于典型废塑料的热解特性与动力学研究  

Study on Pyrolysis Characteristics and Kinetics of Spent FCC Catalysts for Typical Waste Plastics

作　　者：单体仑 高晓东 边慧光[1] 王孔烁 朱东林 汪传生[1] 田晓龙[1] SHAN Ti-lun;GAO Xiao-dong;BIAN Hui-guang;WANG Kong-shuo;ZHU Dong-lin;WANG Chuan-sheng;TIAN Xiao-long(College of Mechanical and Electrical Engineering,Qingdao University of Science and Technology,Qingdao 266100,China;China Nuclear Power Engineering Corporation,Beijing 100000,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266100 [2]中国核电工程有限公司,北京100000

出　　处：《塑料科技》2023年第5期1-8,共8页Plastics Science and Technology

基　　金：国家自然科学基金面上项目(52173101);山东省自然基金重点项目(ZR2020KE037);青岛市科技惠民示范引导专项(22-3-7-cspz-18-nsh);山东省博士后创新项目(202103024)。

摘　　要：通过热重分析和多种动力学模型,研究聚丙烯(PP)、聚乙烯(PE)和聚苯乙烯(PS)及混合塑料(PP/PE/PS)在催化热解和非催化热解过程中的热解特性和动力学参数变化规律。结果表明:在FCC卸出剂的催化作用下,可以降低PP、PE和混合塑料的最大失重温度,有利于提高热降解速率和缩短热解温度区间。混合塑料共热解过程中存在较明显的正协同作用,可降低10%的理论活化能。相较非催化热解,在FCC卸出剂催化作用下可以进一步提高混合塑料的热降解速率。动力学补偿效应公式发现活化能(Ea)和指前因子(A)之间存在明显的补偿效应。实验结果为FCC卸出剂的资源化利用以及降低塑料热解能耗提供支持。The pyrolysis characteristics and kinetic parameters of polypropylene(PP),polyethylene(PE),polystyrene(PS)and mixed plastics(PP/PE/PS)during catalytic and non-catalytic pyrolysis were studied by thermogravimetric analysis and various kinetic models.The results show that the maximum weight loss temperature of PP,PE and mixed plastics can be reduced under the catalysis of spent FCC catalyst,which is beneficial to improve the thermal degradation rate and shorten the pyrolysis temperature range.There is obvious positive synergy in the co-pyrolysis process of mixed plastics,which can reduce the theoretical activation energy by 10%.Compared with non-catalytic pyrolysis,the thermal degradation rate of mixed plastics can be further improved under the catalysis of spent FCC catalyst.The kinetic compensation effect formula found that there was a significant compensation effect between activation energy(Ea)and pre-exponential factor(A).The experimental results provide support for the resource utilization of spent FCC catalyst and the reduction of plastic pyrolysis energy consumption.

关 键 词：FCC卸出剂 废塑料 热解特性 热解机理 动力学 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业] X705[环境科学与工程—环境工程]