高校化学工程学报2016，Vol.30Issue(5)：985-991,7.DOI:10.3969/j.issn.1003-9015.2016.05.001
四氢萘-正癸烷-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 a Tetranap-n-Decane-Dimethyl Sulfoxide System
吴辉 1刘昌见 1肖聪1
作者信息
- 1. 中国石油大学 北京 CNPC催化重点实验室，北京 102249
- 折叠
摘要
Abstract
Coal direct liquefaction oil contains 50%~70% aromatics, in which heavy aromatics accounts for about 80%. Dimethyl sulfoxide (DMSO) is a desired solvent for heavy aromatics extraction, and the quality of liquefaction oil can be improved by extraction with DMSO. Tetranap was selected as a model aromatics compound based on the composition of liquefaction oil, and n-decane was selected to represent the rest part of liquefaction oil. The liquid-liquid equilibrium (LLE) of the tetranap-n-decane-DMSO ternary system under atmospheric pressure was measured at 303.15, 313.15, 323.15 K, respectively, and the phase diagram of this ternary system was obtained. The results were correlated with the Othmer-Tobias and NRTL models to obtain binary interaction parameters, which show that both the Othmer-Tobias and the NRTL models can correlated the equilibrium composition satisfactorily, the selectivity coefficients of tetranap to n-decane are 3.2~17.7. The results show that DMSO is a suitable extraction solvent to separate tetranap and n-decane.关键词
煤液化油/相平衡/溶剂萃取/NRTL模型/预测Key words
coal liquefaction oil/phase equilibrium/solvent extraction/NRTL model/prediction分类
化学化工引用本文复制引用
吴辉,刘昌见,肖聪..四氢萘-正癸烷-二甲基亚砜液-液平衡数据的测定与关联[J].高校化学工程学报,2016,30(5):985-991,7.
