含油污泥掺混废轮胎燃烧动力学  

Combustion Kinetics of Oily Sludge Blends Waste Tires

作　　者：吕全伟[1,2] 林顺洪[1,2] 柏继松[1,2] 李长江[1,2] 李伟[1,2] 莫榴 李玉 

机构地区：[1]重庆科技学院机械与动力工程学院,重庆401331 [2]重庆科技学院重庆垃圾焚烧发电技术研究院,重庆401331

出　　处：《石油学报（石油加工）》2018年第2期380-388,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：重庆市科技研发基地能力提升项目(cstc2014pt-gc20001);重庆市高校优秀成果转化项目(KJZH14108);重庆科技学院研究生科技创新计划项目(YKJCX1620306)资助

摘　　要：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。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 cocombustion 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

关 键 词：含油污泥 废轮胎 热重-红外联用 混合燃烧 相互作用 

分 类 号：X742[环境科学与工程—环境工程]