| 摘要 |
FIELD: food industry. ^ SUBSTANCE: method provides for distillation of wash in the wash column, epuration of wash distillate with supply of hydraulic selection water onto the upper plate of the epuration column having a splitter, a digestion and a concentration parts, rectification of epurate in the rectification column with extraction of fusel oil fractions, fusel alcohol and non-pasteurised alcohol, cleaning rectified alcohol of methanol and head admixtures in the methanol column. Vapours of fusel oil fractions from the epuration and rectification columns are condensed in the fusel condenser. Vapour condensate from the fusel condenser is delaminated into two liquid phases in the decanter; it is from the lower water stratum that fusel oil fractions from the epuration column splitter part are delivered into the bleeding zone. The fraction from the epuration column condenser, part of vapour condensate from the said column reflux exchanger and fusel alcohol fraction are distilled in the distillate column working according to the hydraulic selection method and having a splitter, a digestion and a concentration parts. A fraction is bled from the distillate column, joined with the upper liquid stratum from the reflux exchanger and discharged from the wash-rectification system in the form of head and intermediate admixtures fraction. From the liquid phase of the lower plates of the distillate column digestion part ethanol fraction is discharged and directed onto the upper plate of the epuration column splitter part. Fractions from the wash, methanol and rectification columns condensers, the carbon dioxide separator condenser and the alcohol traps are distilled in the column for concentration of methanol and head impurities from the condenser whereof one bleeds head impurities concentrate discharged from the wash-rectification installation while still liquor is returned into the wash. ^ EFFECT: invention allows to enhance organoleptic properties of rectified alcohol and increased its yield. ^ 1 dwg, 1 tbl, 2 ex |
