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Process Simulation and Parameter Optimization of Rectisol

QIN Li,SHI Xian-lin,LI Yu-an,ZHAO Hai-quan(School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)  
For the difficulty in determining the vapor-liquid equilibrium data of Rectisol system and few literature reports.Vapor-liquid equilibrium data of this system is predicted with the UNIFAC group contribution method,then simulation model of separating Rectisol is set up based on ASPEN PLUS in this paper.The result shows that the model is satisfactorily agree with the real operation condition of the industry unit.On this basis,the influences of several parameters such as methanol flow and methanol temperature on the separation process is studied.The optimization operation parameters are obtained which can be used to improve the process.
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