METHOD OF RECTIFIED ALCOHOL MANUFACTURING Russian patent published in 2015 - IPC C12P7/06 

FIELD: chemistry.

SUBSTANCE: method includes distillation of wash in distillation-epuration column with condensation of part of epurated water-alcohol vapour in additional wash heater, supply of water-alcohol from main wash heater into boiler of preliminary purification column and supply of condensate from condenser of carbon dioxide separator into middle zone of said column, concentration of main admixtures on said column plates and in its dephlegmator and withdrawal of fraction of main admixtures from condenser of preliminary purification column. Bottom liquid of said column with fraction of fusel alcohol from rectification column and hydroselection water is supplied onto plate of epuration column feeding. Condensate of epurated water-alcohol vapour from additional wash heater of distillation-epuration column is supplied onto lower plate feeding distillation column of main and tailing fractions. Fraction of purified from admixtures ethyl alcohol from liquid phase of plates from middle zone of distillation column of main and tailing fractions is supplied onto plate of rectification column feeding. Fractions from condensers of rectification column, final purification column and liquid from alcohol trap of pure distillates are supplied onto upper plate feeding distillation column of main and tailing fractions.

EFFECT: invention makes it possible to increase alcohol quality and increase its output.

1 dwg, 2 ex, 1 tbl