分壁式萃取精馏塔制备高纯度醋酸乙烯酯的模拟与优化  

Simulation and Optimization of Preparation of High Purity Vinyl Acetate by Dividing Wall Extractive Distillation Column

作　　者：罗祖云[1] 张静娴 李宇康 陈傲 Luo Zu-yun;Zhang Jing-xian;Li Yu-kang;Chen Ao

机构地区：[1]福州大学至诚学院,福建福州350002

出　　处：《化工设计通讯》2020年第12期39-40,72,共3页Chemical Engineering Design Communications

基　　金：福建省自然科学基金(2018J01431);福建省中青年教师教育科研项目(JT180808);福州大学至诚学院院级课程改革项目(ZJ1835);福建省省级大学生创新训练计划(202013470019);福州大学至诚学院院级一流本科课程(ZJ2042)。

摘　　要：针对醋酸乙烯酯和水的二元共沸物采用普通精馏分离难以获得高纯度的醋酸乙烯酯的问题,采用甘油作为萃取剂,利用分壁式萃取精馏塔分离了醋酸乙烯酯和水的二元共沸物。利用Aspen Plus软件系统考察了主塔原料进料位置、萃取剂进料位置、萃取剂进料量、侧线采出位置、主塔回流比和副塔回流比等因素对于醋酸乙烯酯的分离效果及能耗的影响,确定了最优工艺参数。同时还与常规萃取精馏塔进行了比较,结果表明节能效果明显。It is difficult to get high purity vinyl acetate from the binary azeotrope of vinyl acetate and water by ordinary distillation.In terms of this issue,the binary azeotrope of vinyl acetate and water was separated with glycerol as extractant in a dividing wall extractive distillation column.Aspen plus software system was used to investigate the influence of feed position,extractant feed position,extractant feed amount,side line extraction position,reflux ratio of main column and secondary column on the separation effect and energy consumption of vinyl acetate,and the optimal process parameters were determined.Compared with the conventional extractive distillation column,the results showed that the energy-saving effect is obvious.

关 键 词：醋酸乙烯酯 分壁式萃取精馏塔 Aspen Plus 优化 

分 类 号：TQ225.24[化学工程—有机化工]