化学工程2011，Vol.39Issue(12)：55-58,4.
水-丙烯酸-醋酸-甲苯四元体系液液平衡数据的测定与关联
Measurement and correlation of liquid-liquid equilibrium data for water-acrylic acid-acetic acid-toluene
张宏勋 1刘广宇 1郭海涛 1罗宁1
作者信息
- 1. 河南工业大学化学化工学院,河南郑州450001
- 折叠
摘要
Abstract
The liquid-liquid equilibrium (LLE) data for the quaternary system of water-acrylic acid-acetic acid-toluene at 293. 15, 303. 15 and 313. 15 K were measured in liquid-liquid equilibrium reactor under atmospheric pressure to screen the proper solvent for separating acrylic acid from water by the method of extraction followed by heteroazeotropic distillation. The reliability of the experimental L.L.E data was ascertained through Othmer-Tobias equation. The activity coefficient models of nonrandom two-liquid ( NRTL) and universal quasi-chemical (UNIQUAC) were used to regress the L.L.E. Data of the investigated system. The parameters of the two models were obtained. The calculated values of LLE from the models were compared with the experimental values. The pseudo-ternary phase diagrams at different temperatures of the quaternary system were given. The results show that the deviations of root mean square from the NRTL model are smaller than those from the UNIQUAC model.关键词
液液平衡/丙烯酸/醋酸/甲苯/NRTL/UNIQUACKey words
liquid-liquid equilibrium/ acrylic acid/ acetic acid/ toluene/ NRTL/ UNIQUAC分类
化学化工引用本文复制引用
张宏勋,刘广宇,郭海涛,罗宁..水-丙烯酸-醋酸-甲苯四元体系液液平衡数据的测定与关联[J].化学工程,2011,39(12):55-58,4.
