【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。更多还原

【Abstract】 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.更多还原