化学工程2025，Vol.53Issue(2)：33-37,5.DOI:10.3969/j.issn.1005-9954.2025.02.006
二正丙胺-水部分互溶体系汽液相平衡数据的测定与关联
Vapor-liquid equilibrium measurements and correlation of dipropylamine-water binary system
刘家欣 1彭阳峰 1赵红亮 1童天中1
作者信息
- 1. 华东理工大学化工学院,上海 200237
- 折叠
摘要
Abstract
Dipropylamine is an important organic synthesis raw material and intermediate.The vapor-liquid equilibrium data of the partially miscible system of dipropylamine-water is an essential basic data for the separation and purification of dipropylamine.The liquid-liquid equilibrium data of the dipropylamine-water system in the range of 303.15-360.85 K were determined by the turbidimetric method.The experimental results show that the solubility of dipropylamine in 100 g water is only 0.433 5-3.275 g while the solubility of water in 100 g dipropylamine is 10.47-40.96 g,indicating that this system has relatively low mutual solubility.Vapor-liquid equilibrium of the dipropylamine-water binary system under pressure of 101.3 kPa was investigated with an improved Partt still.The Herrington thermodynamic consistency test shows that the experimental data is reliable.Binary interaction parameters of NRTL equation were presented using Aspen and the relationship between model parameters and temperature was regressed.Compared with experimental data,the relative average deviation of vapor molar fraction predicted by the NRTL model is 8.2％,and the average temperature deviation is 0.22 K.The predicted results agree well with the experimental values.关键词
二正丙胺/水/液液平衡/汽液平衡/NRTL模型Key words
dipropylamine/water/liquid-liquid equilibrium/vapor-liquid equilibrium/NRTL model分类
化学化工引用本文复制引用
刘家欣,彭阳峰,赵红亮,童天中..二正丙胺-水部分互溶体系汽液相平衡数据的测定与关联[J].化学工程,2025,53(2):33-37,5.
