文献类型：期刊文献

英文题名：THE COMPARISON OF NUMERICAL-SOLUTION OF 3 KINDS OF MODELS OF THE INTRAPARTICLE EFFECTIVENESS FACTORS FOR MULTIPLE REACTIONS SYSTEM OF METHANOL SYNTHESIS IN THE PRESENCE OF CU-BASED CATALYST

作者：YAO, PF; ZHU, BC; FANG, DY

机构：[1]E CHINA UNIV CHEM TECHNOL,DEPT CHEM ENGN,SHANGHAI 200237,PEOPLES R CHINA

年份：1994

卷号：12

期号：3

起止页码：389

外文期刊名：FUEL SCIENCE & TECHNOLOGY INTERNATIONAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1994NJ46100002)】；

语种：英文

摘要：In this paper for methanol synthesis from the hydrogenation of CO and CO2 over surface poisoned or unpoisoned Cu-based catalyst, three kinds of diffusion models for calculating the intraparticle effectiveness factors of the multiple reactions have been presented. They are one dimensional multi-components diffusion model, one demensional simplified multi-components diffusion model and one dimensional key-components diffusion model. Numerical solution of the intraparticle effectiveness factors solved by orthogonal collocation method have been obtained. Key-components diffusion model was available for calculating effectiveness factors only for the reactions over slightly poisoned catalyst. As poisoned fraction increases the deviation of effectiveness-factors calculated from key-components diffusion model and multi-components diffusion model gets greater. Since the time spent for calculating simplified multi-components diffusion model is less and the results are more precisely, this model is recommanded for calculating effectiveness factors.