[1]潘晓梅,晏芸,徐积武,等.间歇萃取精馏分离二氯甲烷-乙醇-水体系的模拟及实验研究[J].东南大学学报(自然科学版),2012,42(3):511-515.[doi:10.3969/j.issn.1001-0505.2012.03.023]
 Pan Xiaomei,Yan Yun,Xu Jiwu,et al.Simulation and experimental study on batch extractive distillation for dichloromethane-ethanol-water[J].Journal of Southeast University (Natural Science Edition),2012,42(3):511-515.[doi:10.3969/j.issn.1001-0505.2012.03.023]
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间歇萃取精馏分离二氯甲烷-乙醇-水体系的模拟及实验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第3期
页码:
511-515
栏目:
化学化工
出版日期:
2012-05-20

文章信息/Info

Title:
Simulation and experimental study on batch extractive distillation for dichloromethane-ethanol-water
作者:
潘晓梅 晏芸 徐积武 肖国民
东南大学化学化工学院, 南京 211189
Author(s):
Pan Xiaomei Yan Yun Xu Jiwu Xiao Guomin
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189,China
关键词:
间歇萃取精馏 Aspen Plus模拟 二氯甲烷
Keywords:
batch extractive distillation Aspen Plus simulation dichloromethane
分类号:
TQ9
DOI:
10.3969/j.issn.1001-0505.2012.03.023
摘要:
基于NRTL模型,以乙二醇为萃取剂,用Aspen Plus软件对二氯甲烷-乙醇-水三元体系间歇萃取精馏过程进行模拟,分别考虑了溶剂比、回流比、塔板数、溶剂进料位置和溶剂进料温度对整个精馏过程的影响.原料为100 kg含95%二氯甲烷(质量分数)、3%水、2%乙醇的混合溶液.利用模拟结果对各工艺参数进行分析和优化,得出了最佳的操作条件:精馏塔塔板数为20块、溶剂进料位置在第2块塔板、溶剂进料温度为38 ℃、回流比为2.5、溶剂比为0.575.在该操作条件下,塔顶的二氯甲烷的质量分数可达99.8%以上,回收率为96.65%,满足溶剂回收再利用的要求.通过实验对该模拟结果进行验证,得到的二氯甲烷质量分数高达99.8%,回收率为90%左右,与模拟结果基本一致.
Abstract:
Using glycol as extraction agent, based on the non-random two-liquid(NRTL)model, Aspen Plus software is employed to simulate the batch extractive distillation process of dichloromethane-ethanol-water. The feed is 100 kg aqueous solution of dichloromethane-water-ethanol(mass ratio is 95:3:2). Taking solvent ratio, reflux ratio, number of plates, solvent feeding position and solvent feeding temperature into consideration, the optimum operating conditions are obtained: The number of tower plates is 20; the solvent feeding position is the second tower plate; the solvent feeding temperature is 38 ℃; the reflux ratio is 2.5; the solvent ratio is 0.575. Under these circumstances, the overhead fraction of dichloromethane is up to 99.8% and the recycling rate is up to 96.65%, fulfilling the requests of recycle. To verify the simulation results, the experiment is carried out. The mass fraction of dichloromethane is up to 99.8% and the recycling rate is about 90%, which are basically the same as the simulation results.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 潘晓梅(1974—),女,博士,副教授,panxiaomei@seu.edu.cn.
引文格式: 潘晓梅,晏芸,徐积武,等.间歇萃取精馏分离二氯甲烷-乙醇-水体系的模拟及实验研究[J].东南大学学报:自然科学版,2012,42(3):511-515. [doi:10.3969/j.issn.1001-0505.2012.03.023]
更新日期/Last Update: 2012-05-20