文献类型：期刊文献

中文题名：沥青球在流化床反应器中氧化不熔化及后续炭化行为的研究

英文题名：Oxidative stabilization of pitch spheres in fluidized bed and their carbonization behavior

作者：王永邦[1];刘小军[1];李泽斯[1];乔文明[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2010

卷号：29

期号：6

起止页码：5

中文期刊名：炭素技术

外文期刊名：Carbon Techniques

收录：CSTPCD;;CSCD:【CSCD_E2011_2012】；

基金：上海市科学技术委员会资助项目(09495801200)

语种：中文

中文关键词：沥青;氧化不熔化;流化床

外文关键词：Pitch; oxidation stabilization; fluidized bed

摘要：用流化床反应器对沥青球进行了氧化不熔化处理,考察了不同温度下沥青球的氧化行为及其后续炭化行为。采用热重分析仪、傅里叶变换红外光谱仪、元素分析仪及扫描显微镜对氧化沥青球和炭化球进行了表征。结果表明:流化床反应器强化了沥青球氧化不熔化的传热和传质过程,在0.21 m/s的临界流态化气速下,以0.5℃/min快速升温至300℃进行沥青球的不熔化处理,得到具有良好表面形貌和球形度的氧化沥青球及其炭化球,极大改善了沥青球制备过程中氧化不熔化的耗时、耗能问题。
The pitch spheres were oxidized at different temperatures in a fluidized bed.The chemical structure and morphology of the oxidized and carbonized pitch spheres samples were investigated by TG,FT-IR,SEM and elemental analysis.The results showed that the fluidized bed reactors has strengthened the heat and mass transfer in oxidative stabilization,and decreased the time and energy consumption of oxidation process.When the oxidation was operated at the critical fluidization velocity of 0.21 m/s and the heating rate of 0.5 ℃/min to 300 ℃,pitch spheres were oxidative stabilization completely,and carbonized pitch spheres with smooth-surfaced morphologies were obtained.