PROCESS OF PRODUCING RECTIFIED ETHYL ALCOHOL "ALFA" Russian patent published in 2006 - IPC C12P7/06 C12G3/12 B01D3/14 

FIELD: food industry and alcohol production.

SUBSTANCE: process comprises epuration of wash distillate in epuration column under hydroselection conditions using water fed onto 32nd plate in amount allowing withdrawal of epurate with volume percentage of alcohol between 15 and 25%. Epurate from epuration column is fed onto 16th plate of rectification column. Further follow distillation and concentration of alcohol, pasteurization thereof and additionally refinement to remove head impurities, removal of fusel oil from rectification column, return of non-pasteurized from alcohol and distillation water into epuration column, post-purification of alcohol in final purification column equipped with dephlegmator and condenser by way of removal of intermediate impurities from liquid phase from 15th and 25th plates (in upward direction) and feeding thereof in amounts 0.5-1.0% into head fraction of ethyl alcohol and withdrawal of methanol fraction from condenser, which is fed in amount 0.5-1.0% onto 36th plate of epuration column or into head fraction of ethyl alcohol. Commercial rectified alcohol "Alfa" is discharged from bottom section of final purification column. Content of methanol is thus reduced from 0.03 to 0.003 mg/dm³ and content of fusel oil from 3 to 2 mg/dm³.

EFFECT: improved physicochemical characteristics of alcohol.

1 dwg, 3 ex