非木质生物质/废塑料共热解热重分析及动力学研究  

TG Analysis and Kinetics of Non-Woody Biomss and Waste Plastic Co-Pyrolysis

作　　者：赵宇[1] 金文英[1] 金珊[1] 刘春生[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2009年第2期15-18,共4页Journal of Liaoning Petrochemical University

摘　　要：对非木质生物质（稻草）、废塑料（农用地膜）及其混合物的热解行为进行了研究。实验结果表明,非木质生物质的失重温度区间较塑料的失重温度区间宽,由于生物质的灰分和固定碳含量高导致转化率低于塑料。非木质生物质/废塑料共热解时二者存在明显的协同效应,动力学分析结果表明,采用一级反应模型能很好地拟合实验数据。塑料单独热解时可用1个一级反应模型描述,生物质单独热解时可用2个连续一级反应模型描述,而生物质/塑料热解则需用4个连续一级反应模型来描述。其活化能为64.6-306.6 kJ/mol,指前因子为1.1×10^4-3.0×10^22。Thermal decomposition behaviours of no woody biomass （straw） and waste plastic （agricultural film） were investigated using TGA. The results showe that the biomass is decomposed at a wider temperature range than plastics, and the transfer efficiency of biomass is lowest because of the high content of ash and fixcarbon. It is exhibited significant synergistic effect created more the light component between biomass and plastic during co pyrolysis. The kinetic analysis indicates that the pyrolytic processes can be described as first order reactions model, a quite good fitting of experimental data was obtained for all samples studied. The only plastic can be described as the one model, and the only biomass be described as the two consecutive models, than the biomass/plastic co-pyrolysis need be described as the four consecutive models. The activation energies were found to be in the rang of 64.6 - 306.6 kJ/mol, and the pre-exponential factors were 1.1 × 10^4 -3.0× 10^-22.

关 键 词：生物质 塑料 热解 动力学 

分 类 号：TQ530.2[化学工程—煤化学工程]