文献类型：期刊文献

中文题名：分壁式萃取精馏塔制取无水正丙醇的实验与模拟研究

英文题名：Experiment and Simulation Study on Extractive Distillation of Anhydrous n-Propyl Alcohol by Dividing Wall Column

作者：刘树丽[1];赵俊明[1];齐鸣斋[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2012

卷号：37

期号：12

起止页码：11

中文期刊名：上海化工

外文期刊名：Shanghai Chemical Industry

语种：中文

中文关键词：分壁式精馏塔;萃取精馏;正丙醇;水

外文关键词：Dividing wall column; Extractive distillation; n-Propyl alcohol; Water

摘要：采用分壁式萃取精馏塔制取无水正丙醇,以乙二醇为萃取剂,在溶剂比为3、主塔回流比为2.5时,实验测得塔顶正丙醇的质量分数达到96.03%,塔釜乙二醇的质量分数达到99.44%,可作萃取剂直接循环利用。利用Aspen Plus对该工艺进行模拟计算,其结果与实验基本一致。模拟对比该工艺和常规双塔萃取精馏工艺,结果显示分壁式萃取精馏塔节能22.5%,降低了能耗和设备投资。
A dividing wall column was applied in extractive distillation in order to gain anhydrous n-propyl alcohol with ethanediol as extractant.When the solvent ratio was 3, the reflux ratio of main column was 2.5, the mass fraction of n-propyl alcohol in the top product was 96.03%, the mass fraction of ethanediol in the bottom product was 99.44% and it could be recycling used as extraction solvent.It showed that the experiment results were basically in agreement with the simulation results obtained by Aspen Plus. The DWC column could reduce energy by 22.5% compared with conventional extractive distillation process, the equipment cost and energy consumption could also be reduced.