异形多通孔催化剂的工程研究——IV.异形多通孔颗粒反应-传质-传热耦合过程数学模型  

Engineering Research of Irregular Shape Catalysts with Through-holes IV. Mathematical Model of Coupling Process of Reaction-Mass transfer-Heat transfer

作　　者：樊蓉蓉[1] 甘霖[1] 朱炳辰[1] 

机构地区：[1]华东理工大学化学工程系,上海200237

出　　处：《华东理工大学学报（自然科学版）》2003年第1期1-5,共5页Journal of East China University of Science and Technology

摘　　要：以乙烯氧化合成环氧乙烷多重反应体系为背景,根据YS-5环柱形银催化剂本征动力学,对12孔及24孔异形多通孔颗粒建立反应-传质-传热数学模型,通过正交配置法求解了颗粒内部的浓度及温度分布。结果表明,12孔及24孔多通孔颗粒的应用有助于提高反应选择性和转化率,降低粒内温升。同时由模拟计算的数据得到12孔及24孔多通孔颗粒的L-H型主副反应宏观动力学方程。In this paper, the mathematical model of multiple reactionsmass transferheat transfer coupling process in irregular shape catalysts with throughholes was set up based on the intrinsic kinetics of ethylene oxidation to ethylene oxide on YS5 catalyst. The concentration and temperature profiles in the catalyst pellet were obtained through the orthogonal collocation method. The results showed that the irregular shape catalysts with throughholes were helpful to increase the selectivity and conversion and decrease the rise in the temperature of the catalyst pellets. The dualrate LH type models of global kinetics for main and side reaction were obtained.

关 键 词：异形多通孔颗粒 反应-传质-传热耦合过程 数学模型 异形多通孔催化剂 环氧乙烷 正交配置法 多重反应体系 

分 类 号：TQ231.1[化学工程—有机化工] TQ032.41