化工学报2013，Vol.64Issue(3)：814-819,6.DOI:10.3969/j.issn.0438-1157.2013.03.005
甲苯-正己烯-二甲基亚砜液-液平衡数据的测定与关联
Determination and correlation of liquid-liquid equilibrium data for toluene-n-hexene-dimethyl sulfoxide system
摘要
Abstract
Pyrolysis gasoline is an important resource of aromatics with high content of olefins, and dimethyl sulfoxide (DMSO) is a solvent that could extract aromatics from olefins selectively. Liquid-liquid equilibrium (LLE) of toluene-n-hexene-DMSO system is the basis for the extraction of aromatics from pyrolysis gasoline. In this study, LLE data of toluene-n-hexene-DMSO system at 293. 15 K, 298. 15 K and 303. 15 K were determined at atmospheric pressure, the phase diagram and plait point of this ternary system were obtained. The equilibrium data were well correlated by Hand and NRTL model. The parameters in the NRTL model for the ternary system and a formula of equilibrium data for industrial extraction were obtained. The LLE data predicted with the NRTL model are in satisfactory agreement with experimental data. The selectivity coefficients indicate that it is possible to separate toluene and n-hexene using DMSO.关键词
甲苯/正己烯/DMSO/液-液平衡/NRTL模型Key words
toluene/ n-hexene/ DMSO/ liquid-liquid equilibrium/ NRTL model分类
化学化工引用本文复制引用
陈莹,刘昌见..甲苯-正己烯-二甲基亚砜液-液平衡数据的测定与关联[J].化工学报,2013,64(3):814-819,6.
