混合塑料热裂解反应动力学研究  

STUDY ON THE KINETICS OF PYROLYSIS REACTION OF MIXED PLASTICS

作　　者：姚璐 朱建华[1] 李术元[2] 马跃[2] 岳长涛[2] 许强[1] 刘宗鹏 Yao Lu;Zhu Jianhua;Li Shuyuan;Ma Yue;Yue Changtao;Xu Qiang;Liu Zongpeng(College of Chemical Engineering and Environment,China University of Petroleum,Beijing 102249;College of Science,China University of Petroleum)

机构地区：[1]中国石油大学(北京)化学工程与环境学院,北京102249 [2]中国石油大学(北京)理学院

出　　处：《石油炼制与化工》2025年第4期114-122,共9页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2019YFC1906305)。

摘　　要：选用聚丙烯(PP)、高密度聚乙烯(HDPE)及聚苯乙烯(PS)3种塑料颗粒,以不同的比例进行混合,利用热重试验装置分析3种塑料样品单独及混合热裂解的温度范围及失重规律,并采用Friedman、KAS和有限平行反应模型求解塑料的热裂解动力学参数。研究结果表明,几种塑料样品发生热裂解反应由易到难的顺序及由Friedman、KAS法计算的平均表观活化能由小到大的顺序均遵循:PS<PP-PS<PP-HDPE-PS(1∶1∶1)<HDPE-PS<PP-HDPE-PS(实际比例)<PP<PP-HDPE<HDPE。由有限平行反应模型估算的PP,HDPE,PS,PP-HDPE,PP-PS,HDPE-PS,PP-HDPE-PS(1∶1∶1),PP-HDPE-PS(实际比例)塑料样品的热裂解反应活化能分别集中在198~314,231~317,192~297,200~314,194~299,186~301,171~242,196~312 kJ/mol范围内。Three types of plastic particles,polypropylene(PP),high-density polyethylene(HDPE),and polystyrene(PS),were selected and mixed in different proportions,and the thermogravimetric apparatus was used to analyze the pyrolysis temperature range and weight loss of the separate and mixed samples of the three types of plastics.Friedman,KAS and finite parallel reaction model were used to solve the pyrolysis reaction kinetic parameters of plastics.The results demonstrated that the order of pyrolysis reactions of several plastic samples from easy to difficult and the order of average activation energy calculated by Friedman and KAS method from small to large of several plastic samples followed:PS<PP-PS<PP-HDPE-PS(1∶1∶1)<HDPE-PS<PP-HDPE-PS(actual proportions)<PP<PP-HDPE<HDPE.The activation energies of PP,HDPE,PS,PP-HDPE,PP-PS,HDPE-PS,PP-HDPE-PS(1∶1∶1)and PP-HDPE-PS(actual proportions)plastic samples estimated by the finite parallel reaction model were concentrated in the range of 198-314,231-317,192-297,200-314,194-299,186-301,171-242 and 196-312 kJ/mol,respectively.

关 键 词：热裂解反应 动力学分析 有限平行反应模型 Friedman法 KAS法 

分 类 号：TQ3[化学工程]