شماره ركورد كنفرانس :
5301
عنوان مقاله :
Heat Integration of Extractive Distillation Process with Glycerol Entrainer for Separation of Water-Ethanol Azeotropic Mixture
پديدآورندگان :
Alimohammadi Maedeh Maedehalimohammadi.ut@gmail.com M.S. student of chemical engineering, University of Tehran, Tehran , Hedayat Ali alihedayat.che@gmail.com M.S. student of chemical engineering, University of Tehran, Tehran , Asghari Kimia kimiaasghari.che@gmail.com M.S. student of chemical engineering, Sharif University of Technology, Tehran , Zeinali Saber zeinali.saber@gmail.com M.S. student of chemical engineering, University of Tehran, Tehran
كليدواژه :
extractive distillation , heat integration , minimum boiling azeotrope , feed , splitting
عنوان كنفرانس :
هشتمين كنفرانس دوسالانه انرژي پاك
چكيده فارسي :
This paper evaluates separation of a minimum boiling homogeneous azeotropic mixture using the extractive distillation process. To alter the vaporliquid equilibrium of the water-ethanol azeotropic mixture, a glycerol entrainer with a boiling point higher than those of water and ethanol was used. Feed-splitting was used for heat integration. In this method, the feed is split into two sections, where the bottom section is pre-heated through a hot stream, while the top section flows into the column without a temperature change. This reduces the heat duty of the reboiler, with the heat duty of the condenser remaining almost unchanged. To evaluate the proposed method, four different processes were accurately simulated in Aspen HYSYS V.10. The proposed process was found to have 19% lower energy consumption than extractive distillation without heat integration
