Vapor–Liquid Equilibrium Experiment and Process Simulation for Methanol and Ethyl Formate at 101.3 kPa
Xiaoyan Han, Yanqi Wang, Yongguang Wang, Hongkang Zhao, Qunsheng Li
Abstract
As there is an azeotropic point between methanol and ethyl formate, they cannot be completely separated by ordinary distillation. In this paper, extractive distillation was applied and dimethyl sulfoxide (DMSO) and ethylene glycol (EG) were used as entrainers. Vapor–liquid equilibrium (VLE) data for methanol–ethyl formate, methanol–ethyl formate–DMSO, and methanol–ethyl formate–EG were measured at 101.3 kPa, and the NRTL model was applied for data fitting. It was found that the experimental value and the calculated value were accordant well through the deviation value. Then, the NRTL model was used for simulation by Aspen Plus to achieve the separation goal, and it verified the feasibility of the experimental scheme.