Premium
Ethanol dehydration by extractive distillation
Author(s) -
Meirelles Antonio,
Weiss Siegfried,
Herfurth Herbert
Publication year - 1992
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280530213
Subject(s) - extractive distillation , fractional distillation , ethanol , ethylene glycol , dehydration , solvent , distillation , azeotropic distillation , chemistry , molar ratio , chromatography , mole fraction , organic chemistry , catalysis , biochemistry
Experiments and process simulation enable favourable operating conditions to be determined for the extractive distillation of ethanol—water, with ethylene glycol as a solvent. The solvent molar rate to feed molar rate ratio S/F = 0·6 and the reflux ratio R = 0·5 were determined in order to achieve at least 99·5 mole % purity of ethanol. Other parameters examined include feed concentration, purity of solvent, and number of plates. Extractive distillation can be used to achieve high purity of ethanol at low energy consumption and under simple operating conditions.