文献类型：期刊文献

中文题名：环氧乙烷合成银催化剂宏观动力学及失活分析

英文题名：GLOBAL KINETICS AND DEACTIVATION OF SILVER CATALYST FOR ETHYLENE OXIDE SYNTHESIS

作者：甘霖[1];王弘轼[1];朱炳辰[1];徐懋生[1];王忠良[2]

机构：[1]华东理工大学化工系,上海200237;[2]上海石油化工股份有限公司,上海200540

年份：2001

卷号：52

期号：11

起止页码：969

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：2002156914207);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：环氧乙烷;合成;宏观动力学;活性校正因子;失活;银催化剂;催化活性;乙烯;氧化

外文关键词：Catalyst activity;Ethylene;Iterative methods;Mathematical models;Reaction kinetics;Silver;Synthesis (chemical);Two dimensional

摘要：在工业生产的条件下用无梯度反应器研究了工业颗粒银催化剂上乙烯氧化合成环氧乙烷宏观动力学 ,得到了能反映该系统主副反应特性的双速率方程 .建立了二维非均相反应器模型 ,模拟并比较了工业生产操作数据 。
The global kinetic rate equations of the main and side reactions of ethylene oxide synthesis are studied in a gradientless reactor under industrial operating conditions. The two-dimensional heterogeneous model of fixed-bed reactor is set up for the simulation of industrial reactor. The Crank-Nicholson predictor-corrector method is used in the integration for the gas phase and the iteration method is used for the solid phase. The accuracy of reactor model, global kinetic equations and heat transfer parameters were tested by comparing the calculated values with industrial actual values. These also show that the other transfer parameters cited in the calculation are suitable. The activity correction factors of the main and side reactions are correlated with time by regression of industrial operation data. The main and side reaction deactivation rates of sliver catalyst of ethylene oxide synthesis are also obtained through further research. The deactivation rates are used to forecasting the suitable time when the catalyst should be replaced and to optimize operating conditions in the later period of catalyst activity.