摘要
催化剂的焙烧是催化剂制备的重要步骤,以乙苯脱氢制苯乙烯催化剂为研究对象,对隧道窑和连续式回转炉等常用工业设备焙烧的催化剂,与实验室马福炉焙烧的催化剂分别进行了评价和分析。结果表明,回转炉焙烧的催化剂平均抗压碎强度和抗压碎强度方差略优于隧道窑焙烧的催化剂;回转炉焙烧的催化剂在反应活性、选择性以及比表面积、孔容、平均孔径、晶粒形貌等各项特征上均达到实验室马福炉焙烧的水平,更优于隧道窑焙烧的催化剂。焙烧的催化剂的比表面积、孔容、平均孔径及晶粒形貌的差别是催化剂活性存在差异的主要原因。应充分关注从实验室小试装置到工业大规模设备由于温度场差异引起的催化剂焙烧过程的放大效应。
Calcination is one of the most procedures in catalyst preparation. The activity and strength of the catalysts calcinated by commercial scale tunnel kiln, continuous rotary furnace and experimental muffle furnace, respectively, used for the dehydrogenation of ethylbenzene were investigated. The result showed that the average strength and the strength variation of catalyst calcinated by rotary furnace were better than that of catalyst calcinated by tunnel kiln. The activity, the specific surface area, the pore volume, the average pore size and the surface morphology of catalyst calcinated by rotary furnace could repeat those of catalysts calcinated by muffle furnace, and were better than those of catalyst calcinated by tunnel kiln. The reason causing the different activities between the catalysts calcinated by different devices was the differences in their specific surface area, the pore volume, the average pore size and the surface morphology of catalysts. There is obvious scale-up effect in the calcination of catalyst from experiment to commercial production for the dehydrogenation of ethylbenzene.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2007年第1期28-34,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石油化工股份有限公司科研开发合同项目(401065)资助
关键词
催化剂
焙烧
焙烧设备
工业放大
乙苯脱氢催化剂
温度差异
catalyst
calcination
calcinator
scale-up
catalyst for dehydrogenation ofethylbenzenel temperature difference
