Measurement and correlation of liquid-liquid equilibrium for the ternary system(water+1,2-dichloroethane+sulfolane)at 288.15,298.15,and 308.15 K  

作　　者：Zhansheng Li Jiayu Song Shouhai Zhang Jinyan Wang Xigao Jian 

机构地区：[1]State Key Laboratory of Fine Chemicals,Liaoning High Performance Polymer Engineering Research Center,School of Chemical Engineering,Dalian University of Technology,Dalian,116024,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第11期109-114,共6页中国化学工程学报（英文版）

基　　金：financially supported by National Key Research and Development Program of China(2017YFB0307600);Liaoning Revitalization Talents Program(XLYC1802073);Dalian High-level Talent Innovation Support Program(2019RD08)。

摘　　要：Sulfolane is an important aprotic polar solvent.Liquid-liquid equilibrium(LLE)data for the ternary systems of water+1,2-dichloroethane+sulfolane were measured at temperatures of 288.15,298.15 and 308.15 K under the atmospheric pressure.The distribution coefficient and selectivity were determined from the measured LLE data,which showed that 1,2-dichloroethane is a suitable extractant for the recovery of sulfolane from its aqueous solution.The nonrandom two-liquid(NRTL)model and the universal quasi-chemical(UNIQUAC)model were utilized to correlate the experimental LLE data.The low values of RMSD indicated that the ternary system could be fitted well by the NRTL and UNIQUAC models.The consistency of the binary interaction parameters for the two thermodynamic models obtained was confirmed by the topological information contained in the Gibbs energy of mixing function(G^(M)/RT).

关 键 词：Phase equilibria THERMODYNAMICS Parameter estimation SULFOLANE NRTL model UNIQUAC model 

分 类 号：O642.4[理学—物理化学]