METHOD OF PRODUCING RECTIFIED ALCOHOL Russian patent published in 1997 - IPC

FIELD: alcohol industry. SUBSTANCE: method involves cooking out alcohol from brew in brew or brew-epuration column with transferring ethyl alcohol and accompanying components, into fusel distillate together with vapors from these column and liquid fractions from carbon dioxide separator condenser and from alcohol trap of brew column. Brew distillate is purified from head and intermediate components, including those of fusel oil, in epuration column using hydroselection technique. Epurate is rectified in alcohol column with bleeding fusel oil fractions, fusel alcohol and non-pasteurized alcohol. Fusel oil fractions and fusel alcohol are rectified in fusel column with bleeding fusel from accumulator section. Ethanol is additionally purified by bleeding fusel/ether/aldehyde/methanol fractions from condenser of carbon dioxide separator and condenser and alcohol trap of brew or brew-epuration column. Brew distillate is subjected to epuration in epuration column with feeding hot water onto upper plate and withdrawing it from condenser of separator of fusel/ether/aldehyde/methanol fraction, which is together with similar fractions from condenser of carbon dioxide separator and condenser and alcohol trap of the latter, methanol/ether/aldehyde brew or brew-epuration column is used to additionally feed fusel column. From the 28-36th plates of this column, fraction of propyl alcohols and from condenser of this column, methanol/ether/aldehyde fraction are taken off and are then used for feeding distillation column together with non-pasteurized alcohol from condenser of alcohol column. Into the middle zone of cooking part of distillation column, hot water is introduced. From the condenser of this column, head fraction concentrate is withdrawn; from liquid phase of plate over hot water inlet propyl alcohol concentrate is taken off; and from the still, water-alcohol liquid is withdrawn and directed into original brew. EFFECT: enhanced efficiency of process. 1 dwg, 1 tbl