城市固体废弃物热重分析及热解动力学研究  

Thermogravimetric analysis and pyrolytic kinetic study on municipal solid wastes(MSW)

作　　者：柯威[1] 熊伟[1] 刘景雪[1] 韦刘柯[1] 周力[1] 鲍秀婷[1] 向晶晶[1] 郭嘉[1] 

机构地区：[1]武汉工程大学化工与制药学院湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430073

出　　处：《可再生能源》2006年第5期53-56,共4页Renewable Energy Resources

基　　金：湖北省基础化学实验示范中心研究创新型实验项目(2005006)

摘　　要：对城市垃圾典型组分(塑料、橡胶、果皮、织物、纸板等)进行热重分析及热解动力学研究。热重分析结果表明,塑料组分开始分解的温度较高,但分解速率最快;橡胶组分开始分解反应的温度相对较低,且分解速率相对较慢。果皮、织物和纸板类以纤维和木质类物质为主要成分,其热解特性较为相似。热解动力学研究表明,橡胶的热解活化能最高,最难分解,且热解符合二维扩散机理;塑料的热解相对较容易,符合一维扩散机理。而果皮、织物和纸板类的活化能较低,它们的热解符合体积缩小机理。In this paper, thermogravimetric analyses and pyrolysis kinetic studies for municipal solid waste components, including plastics, rubber, fruit peel, textile, and board paper, were carried out. Thermogravimetric analyses showed that the initial temperature for plastic pyrolysis was high, while its decomposition rate was larger. Rubber components commenced pyrolysis at a lower temperature, but with a lower decomposition rate. The pyrolytic characteristics for fruit peel, textile and board paper were similar due to their fiber and lignocelluloses nature. From the pyrolytic kinetic study, it could be found that the pyrolytic activation energy for rubber was the highest and the process followed two-dimensional diffusion mechanism. Pyrolysis of plastic was relatively easy and followed one-dimensional diffusion mechanism. The activation energies for fruit peel, textile and board paper were lower, and their pyrolyses followed volume contraction mechanism.

关 键 词：城市固体废弃物 再利用 热解 热重分析 动力学参数 

分 类 号：X705[环境科学与工程—环境工程]