主要垃圾组分热解动力学模型的优化及比较

Optimization and comparison of pyrolysis kinetic model for typical MSW components

引言垃圾热解技术是近年来备受关注的热点技术这是因为该技术是在隔绝空气的还原性条件下完成的,产生的酸性气体、二（口恶）英等污染物很少另外,热解产物（包括可燃气体、焦油和焦炭）既可以储存,还可以进入下一级燃烧室,在低空气比下燃烧.

By now, f（α）= （l-α）^n （usually n=l） has been adopted as reaction mechanism function in most research on pyrolysis kinetic model of municipal solid waste （MSW） components. In order to clarify the error of the model prediction, experimental studies on pyrolysis kinetics of PE, PVC, latex glove, inner tube of bicycle tyre, outer cover of bicycle tyre, cloth, watermelon peel, double-faced printing paper and fish bone were performed with the thermogravimetry analyzer. Using the common twenty mechanism functions of kinetic models, the experimental results of each sample were simulated respectively, and the optimal models were chosen, then the calculated results of the optimal model were compared with those of the model based on reaction mechanism of f（a）=l-α. The results show that the kinetic model based on f（α）= 1-α reaction mechanism is not the optimal pyrolysis model except for PE, and a relative by large error even exists in certain temperature regions for some samples.