聚苯乙烯泡沫塑料与生物质共热解动力学

利用热重法研究聚苯乙烯泡沫塑料(EPS)与甘蔗渣、花生壳、玉米芯等生物质共热解过程,考察生物质和EPS共热解的相互作用,并根据热重曲线获得动力学参数建立动力学模型.热重分析结果表明:EPS分别与甘蔗渣、玉米芯共热解时有明显的协同作用,而与花生壳共热解协同作用不明显.动力学分析表明:可以用一级反应模型很好地拟合所得实验数据;EPS单独热解时可以用1个一级反应模型描述,生物质单独热解时可用3个连续一级反应模型描述,而EPS与生物质共热解则可用4个连续一级反应模型来描述.

Co-Pyrolysis Kinetics of Expandable Polystyrene and Biomass

Based on the thermogravimetric method,co-pyrolysis of expandable polystyrene(EPS) and three kinds of biomass(bagasse,peanut shell,corncob) were investigated.The interaction between EPS and biomass co-pyrolysis was studied and the kinetics models were established according to the thermogravimetric curves.The thermogravimetric analysis results showed that synergistic effect of the copyrolysis of EPS respectively with bagasse and corncob is obvious,but there is no obvious synergy for EPS with peanut shell.The kinetic analysis indicates that the pyrolytic processes can be described as first order reaction models,a quite good fitting of experimental data was obtained for all samples studied.When the EPS and the biomass pyrolyzed separately,the former can be described as one first order reaction model,and the latter can be described as three consecutive models,then the co-pyrolysis of EPS and biomass need to be described as four consecutive models.