文献类型：期刊文献

中文题名：反应精馏隔壁塔生产碳酸二甲酯工艺模拟及优化

英文题名：Simulation and optimization of reactive distillation dividing wall column process for dimethyl carbonate production

作者：金鑫鹏[1];叶启亮[1];孙浩[1];袁佩青[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2025

卷号：45

期号：12

起止页码：210

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金资助项目(22178113)。

语种：中文

中文关键词：反应精馏;隔壁塔;碳酸二甲酯;Aspen Plus;模拟

外文关键词：reactive distillation;dividing wall column;dimethyl carbonate;Aspen Plus;simulation

摘要：针对碳酸二甲酯生产过程中存在的能耗高、分离效率低等问题,提出反应精馏隔壁塔替代常规反应精馏工艺。通过Aspen Plus软件构建工艺模型,系统研究了进料位置、反应段理论板数、精馏段理论板数、提馏段理论板数、回流比、气相分配比及液相分配比对产物分离效率和能耗的影响。优化结果表明,当反应段为18块理论板、精馏段为4块理论板、提馏段为4块理论板、碳酸丙烯酯第5块理论板进料、甲醇第20块理论板进料时,系统在质量回流比为0.38,气相分配比为0.8,液相分配比为0.9的操作条件下达到最佳分离效果,较常规反应精馏工艺能耗降低22.8%,年度总费用降低15.95%。
To address the high energy consumption and low separation efficiency issues in the dimethyl carbonate production process,this study proposes a reactive dividing-wall column process to replace conventional reactive distillation process.A process model is constructed by means of Aspen Plus software to study systematically the influences of feed location,the number of theoretical plates in the reaction section/rectifying section/stripping section,reflux ratio,vapor split ratio,and liquid split ratio on product separation efficiency and energy consumption.The optimization results demonstrate that the system achieves the optimal separation performance when there are 18 theoretical plates in the reaction section,4 plates in the rectifying section,and 4 plates in the stripping section,propylene carbonate is fed at the 5th plate,methanol is fed at the 20th plate,the mass reflux ratio is 0.38,the vapor split ratio is 0.8,and the liquid split ratio is 0.9.Compared with conventional reactive distillation process,the optimized configuration reduces energy consumption by 22.8%and decreases total annual cost by 15.95%.