含油污泥掺混废轮胎燃烧动力学研究

利用热重 红外联用分析仪（TG FTIR）研究含油污泥掺混废轮胎的燃烧特性。结果表明，含油污泥掺混废轮胎燃烧过程存在相互作用，其中掺混废轮胎燃烧在低温段（200~550℃）促进了燃烧过程，但在高温段（800~1200℃）减缓了燃烧过程。通过燃烧特性分析表明，混合燃烧可弥补由着火温度和燃烬温度带来的负面影响，促进含油污泥的燃烧。采用Coats Redfern法对混合燃烧过程进行动力学分析发现，燃烧动力学可用一级反应模型表示；由平均表观活化能分析可得，掺混废轮胎混合燃烧均较含油污泥单独燃烧的平均表观活化能小。通过FTIR分析发现，含油污泥单独燃烧，在高温段有叔丁基（tert butyl）产生，但掺混废轮胎混合燃烧，可促进tert butyl的分解；CO2主要在低温段和中温段（550~800℃）产生，但CO主要在高温段产生。

Combustion Kinetics of Oily Sludge Blends Waste Tires

The co combustion characteristics of oily sludge blends waste tire was studied by using thermogravimetric analysis Fourier transform infrared spectrometer (TG FTIR). The results show that there is a synergistic effect of blended waste tires on combustion process of oily sludge, and it can promote the combustion process at the low temperature stage （200-550℃）, but at the high temperature stage （800-1200℃）, the combustion process is slowed down. Through the analysis of combustion characteristics, it can be concluded that the co combustion of oily sludge and waste tires can make up for the negative effects of ignition temperature and burnout temperature, and promote the combustion of oily sludge. The kinetic analysis of the co combustion process by Coats Redfern method shows that the combustion kinetics can be expressed by the first order reaction model. The mean apparent activation energy analysis results show that the mean activation energy of the co combustion of oily sludge blended waste tires is lower than that of single oily sludge. The FTIR analysis shows that the combustion of single oil sludge has tert butyl production at the high temperature stage, but oily sludge blended waste tire co combustion can promote the decomposition of tert butyl. CO2 is the main product at the low temperature stage and the medium temperature stage （550-800℃）, but CO is the main product at the high temperature stage.