丙烯酸甲酯-甲醇-水体系逆流萃取过程的模拟.pdf

化
进展
1784
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2013年第32卷第8期
tnenenncrerc
硏究开发
い Snoe
丙烯酸甲酯-甲醇-水体系逆流萃取过程的模拟
陈艳红,张贝克,马昕,卢秉南
(北京化工大学信息科学与技术学院,北京100029)
摘要:基于某丙烯酸甲酯厂甲醇萃取过程的实际运行数据与实际转盘塔的形式结构,计算了实际转盘塔的理
论级数。使用 Aspen Plus流糴模拟软件,通过对进籵组分合理的简化,建立了能够良好描述该萃取设备实际运
行工沉的模型,并实现了丙烯酸甲酯生产工艺中的萃取塔T303的流程模拟。结果表明,在逆流卒取级数=3时,
模拟结果与实际数据基本吻合。在所建模型基础上,研究了温度、萃取相比、理论级数等操作条件对萃取结果
的影响。通过分析和比较不同条件下的模拟结果,提出了能够提高产品质量的建议,也为丙烯酸甲酯生产工艺
改造与扩大生产提供了理论依据。
关键词:丙烯酸甲酯;液液萃取;模拟
中图分类号:TQ028.3文献标志码:A文章编号:1000-6613(2013)08-1784-05
DOl:10.3969/jiss.1000-6613.2013.08.011
Simulation of extraction process for methyl acrylate-methanol-water
system
CHEN Yanhong, ZHANG Beike, MA Xin, LU Bingnan
School of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China)
Abstract: The theoretical stages of an extraction column were calculated based on the main style and
structure and operation data. The model of extraction process for the system of methyl
acrylate-methanol-water was built by reasonable simplification of the components in feedstocks, and
the extraction process was simulated by chemical process simulation software-aspen Plus wi
industrial operation data. After three-stage countercurrent extraction, the simulation result
corresponded with the industrial operation data. Based on the established model, operation variables
and control variables influencing the stability of industrial process were investigated, such as
temperature, extraction ratio and extraction stage. Some suggestions of improving the quality of
products were presented, providing a reference for improving extraction column and increasing
production
Key words: methyl acrylate; liquid-liquid extraction, simulation
丙烯酸甲酯主要用于生产高分子聚合单体,易的丙烯酸甲酯、21%的甲醇及少量水和其它副产物
于与多种乙烯单体共聚,是有机合成及制作涂料、由于丙烯酸甲酯与甲醇沸点较近,若直接选用精馏
纺织、皮革、胶黏剂、工业用各种树脂的重要原料。方法分离,将会耗费大量能量,并且不利于节能减
由丙烯酸甲酯可以合成很多性能极佳的水性化产排。而丙烯酸甲酯-甲醇-水是一个部分互溶三元体
品,符合当今人类环保意识加强的要求,因此,丙
烯酸甲酯生产的发展是极其迅速的'?。
收稿日期:2013-03-14;修改稿日期:2013-04-17
第一作者:陈艳红(1986一),女,项士研究生。E- mail chenyanhong610④
某丙烯酸甲酯?生产工艺主要由反应系统与精
126.c0m。联系人:张贝克,副教授,研究方向为化工仿真与安全。
制系统组成,来自反应系统的粗酯液中含有约73%E-mailzhangbk(@mailbuct.edu.cn