分布活化能模型在垃圾热解/气化动力学研究中的应用  

Application of Distributed Activation Models in Research on Dynamics of Pyrolysis and Gasification of Garbage

作　　者：朱颖[1] 金保升[1] 王泽明[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室东南大学动力工程系

出　　处：《动力工程》2007年第3期441-445,共5页Power Engineering

基　　金：教育部博士点基金(20030286005);江苏省建设系统技术发展项目(JS200311)

摘　　要：采用热重分析仪,对我国城市生活垃圾典型有机混合物(MMSW)的热解和气化特性进行了研究,并用分布活化能模型对TG-DTG曲线进行了动力学分析。试验表明:MMSW失重过程分为厨余中淀粉热解、厨余中脂肪分解、纸类纤维素热解和聚乙烯分解4个过程,并存在3种有机组分的相互作用;在相同失重率下,气化反应活化能值高于热解反应活化能值;整个反应过程中,热解反应活化能分布较窄,而气化反应活化能分布在相对较宽的范围内。Characteristics of pyrolysis and gesification of typical mixtures of organic matter （MMSW）, modelizing municipal solid waste in China, were studied with a thermogravimetric analyzer. The TG-DTG curves were moveover dynamically analyzed with the help of a distributed activation energy model. Study results indicate that the weight loss of MMSW proceeds in the following four process-stages： pyrolytic decomposition of starch, contained in food refuses, decomposition of fats in food refuse, pyrolysis of cellulose in waste paper and decomposition of polyethylene; moreover three organic components interacting with one-another. The active energy of gesification E exceeds that of pyrolysis. In the course of the whole reaction process, the distribution range of activation energy of gasification is relatively limited and that of pyrolytie reaction relatively broader.

关 键 词：环境工程学 城市生活垃圾 动力学参数 热分析 DAEM 热解 气化 

分 类 号：X705[环境科学与工程—环境工程]