中文摘要：

以塑料（PVC）和木屑为原料模拟可燃固体废弃物中主要成分,采用Freeman-Carroll法根据优化的数学函数和动力学参数建立动力学模型,研究在全氧条件下生物质和塑料（塑料质量比15%,25%和50%）共燃烧的特性及动力学,对比了木屑和塑料单独燃烧的情况,结果表明,随试样中塑料比例增加,TG-DTG曲线逐渐向低温区移动,挥发分失重峰温逐渐降低,固定碳失重峰逐渐增加.起始温度和最大燃烧速率对应的温度逐渐降低,终止温度增大.随塑料含量增加,计算的平均活化能逐渐增加,分别为52.46,63.05和70.91k J/mol,表明燃烧的难度逐渐增大,对外加能量的需求量也越大.燃烧特性指数逐渐减小,即加入塑料能降低木屑的燃烧温度.可燃固体废弃物中生物质含量多时易燃烧,塑料多时不易燃烧.

英文摘要：

Plastic（PVC） and sawdust was used to simulate the main components of the combustible solid waste in this experiment. The co-combustion characteristics and dynamics of plastic and sawdust（ plastic mass ratio of 15%, 25%, 50%） were researched under the condition of total oxygen. Dynamic model is established by using Freeman-Carroll method to optimize the mathematical function and kinetic parameters. The results indicate thatwith the increase of the proportion of plastics in the sample, the TG-DTG curves gradually move to the low temperature region, the temperature correspond to volatile weight loss peak decreases, and the peak value of the fixed carbon weight loss increases. The ignition temperature and the temperature corresponding to maximum burning rate of blends tend to decrease and the final combustion temperature increase. with the increase of the amount of plastic, the average activation energy is gradually increased as respectively 52.46, 63.05, 70.91 k J/mol.Its means that blends combustion reaction costs more energy. The index S decrease with the increase of waste plastics which means adding waste plastics can reduce the combustion characteristics of sawdust. The higher biomass content make the combustible solid wasteeasier to combustion, while it is just opposite to plastic content.