苯、噻吩、水、二甲基甲酰胺体系相平衡研究

Study on Phase Equilibrium Data for Systems of Benzene,Thiophene,Water and Dimethylformamide

对１０１．３ｋＰａ下苯－ＤＭＦ、苯－噻吩、噻吩－ＤＭＦ二元体系，苯－噻吩－ＤＭＦ三元体系，苯－噻吩－水－ＤＭＦ四元体系ＶＬＥ数据进行了热力学关联，并用二元体系的相平衡数据对三元体系进行了热力学推算．关联精度符合设计要求．

The VLE data for the binary systems of benzene DMF,benzene thiophene and thiophene DMF,the ternary system of benzene thiophene DMF and the quarternary system of benzene thiophene water DMF are correlated by UNIQUAC,NRTL and McCann equations and the LLE data are correlated by UNIQUAC and NRTL equations.The ternary system is predicted by the three equations.The correlated precision meets the requirements of chemical engineering's design.