Extractive distillation is an effective separation method in chemical engineering industry,and the selection of the extraction agents affect greatly the feasibility and economy of extractive distillation process.This paper is a heuristic research of applying the molecular simulation software,Material Studio(MS),to calculate the mixing energy of binary systems and using the mixing energy as the criteria for extractive agent selection.In this paper,a typical example of benzene and cyclohexane binary system wa...