废轮胎热解特性研究  

Study on the pyrolysis properties of waste tires

作　　者：张守玉[1] 周敏[1] 向银花[2] 李海滨[2] 张建民[1] 

机构地区：[1]上海理工大学动力学院燃烧与气化工程研究所,上海200093 [2]中国科学院广州能源研究所,广东广州510640

出　　处：《燃料化学学报》2006年第6期717-720,共4页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划(973计划;2004CB217705);上海市自然科学基金(04ZR14099);上海市"启明星"计划项目(05QMX1441)

摘　　要：利用TG/DTG对不同来源的三种废轮胎样品的热解特性进行了研究,并得到了热解动力学参数。结果表明,新旧废外轮胎样品热解趋势基本一致,均经历了一个不明显的失重过程和两个明显的失重过程,其原因是由于废外轮胎中的橡胶组分比较复杂;内轮胎样品中的组分比较单一,其热解过程比较简单,仅经历了一个不明显的失重过程和一个明显的失重过程;三种样品的主要失重温度为600 K^800 K,转化率为0.2~0.8;使用一级动力学反应模型很好的拟和了三种样品的主要失重过程,并求出了热解动力学参数。The pyrolysis properties of three tire samples were investigated by means of non-isothermal thermogravimetric analysis in N2 of high purity （99.99%） at heating rates ranging from 5 K/min to 20 K/min. The pyrolysis process of the samples from outer cover has two distinct phases with increasing temperature because of complex rubber ingredients in outer cover. The major rubber ingredient in inner tube is single and the pyrolysis process of the sample from inner tube has only one distinct phase. The temperature range for distinct weight loss of all three samples is from 600 K to 800 K, which corresponds to a tire conversion range of 0.2 - 0.8. The pyrolysis of the three samples can be described by the first-order kinetic model and the related kinetics parameters of the samples pyrolysis were determined.

关 键 词：废轮胎 热解 TG/DTG 动力学 

分 类 号：TQ336.1[化学工程—橡胶工业]