发泡聚苯乙烯颗粒流化热解特性的实验研究
Experimental Research of Fluidized Pyrolysis Characteristics of Foamed Polystyrene Particles
纪国剑 1李奥赛 2陆蓓蓓 1黄鹏圆2
作者信息
- 1. 常州大学石油与天然气工程学院,能源学院,江苏 常州 213164;江苏省绿色过程装备重点实验室,江苏 常州 213164
- 2. 常州大学石油与天然气工程学院,能源学院,江苏 常州 213164
- 折叠
摘要
基于不同加热速率下的热重测试,计算发泡聚苯乙烯颗粒的热裂解动力学参数,自建可视化流化热解炉研究流化床热解过程,并对产物进行分析.热重实验数据根据阿伦尼乌斯方程用KAS,OFW,CR方法计算活化能和指前因子等热解动力学参数.通过可视化实验观察分析不同温度下发泡聚苯乙烯颗粒热解过程的形态变化,并分析固、液、气三相产物的主要成分.KAS 和 OFW 方法计算的活化能分别为 143.55 kJ/mol和 147.21 kJ/mol.CR方法计算指前因子为6.79×105～4.40×108 min-1.发泡聚苯乙烯热解过程中吉布斯自由能为 219.30 kJ/mol,反应焓变为137.94 kJ/mol,熵变为-0.12 kJ/K.流化裂解产物主要是苯乙烯、1,3,5-三苯基环己烷、9,9-二甲基萘为主的裂解油、碳黑及甲苯和苯乙烯为主的裂解气.
Abstract
Based on the thermogravimetric test at different heating rates,the pyrolysis kinetic parameters of expanded polystyrene particles were calculated,and the fluidized bed pyrolysis process was studied in a self-built visual fluidized pyrolysis furnace,and the products were analyzed.According to the experimental data of thermogravimetry,the kinetic parameters of pyrolysis such as activation energy and pre-index factor were calculated by using the methods of Kissinger Akahira Sunos(KAS),Ozawa Flynn Wall(OFW)and Coats Redfern(CR)according to the Arrhenius equation.The morphological changes of the pyrolysis process of expanded polystyrene particles at different temperatures were observed and analyzed through visualization experiments,and the main components of solid,liquid and gas three-phase products were analyzed.The activation energies calculated by the KAS and OFW methods were 143.55 kJ/mol and 147.21 kJ/mol,respectively.The pre-index factor calculated by CR method was 6.79×105-4.4×108 min-1.During the pyrolysis process of expanded polystyrene,the free energy was 219.30 kJ/mol,the enthalpy of the reaction was 137.94 kJ/mol,and the entropy was-0.12 kJ/K.The fluidized pyrolysis products are mainly styrene,1,3,5-triphenylcyclohexane,9,9-dimethylnaphthalene-based pyrolysis oil,carbon black,toluene and styrene-based pyrolysis gas.
关键词
发泡聚苯乙烯颗粒/流化/热解/热重分析/动力学Key words
expanded polystyrene granules/fluidization/pyrolysis/thermogravimetric analysis/kinetics引用本文复制引用
基金项目
常州大学基金项目(ZMF21020034)
江苏省研究生科研创新计划(KYCX22_3042)
出版年
2024
NETL
NSTL
万方数据