【Abstract】 By applying the configuration-bias vaporization method for the simulation of hquid-hquid equilibria based on lattice model,the liquid-liquid equilibria of three ternary systems with the specified molecular parameters(r₁=1,r₂＝4,r₃=8,ε₁₂=0.333,ε₁₃= 0.556,ε₂₃=00),(r₁＝1,r₂＝4,r₃=l6,ε₁₂＝0.25,ε_l3＝0.50,ε₂₃=-0.10)and(r₁＝1,r₂＝4,r₃＝32,ε_l2＝0.25,ε₁₃＝0.50,ε₂₃＝-0.10),respectively,are obtained.Comparisons between the simulation results and those calcu1ated by Flory-Huggins theory,Freed theory and Hu et el’s model for the Polymer solution are made.It is shown that Flory-Huggins theory have large deviation from simulated results,while Freed theory and Hu et al’s model gives much better results．更多还原