METHOD AND APPARATUS FOR PRODUCING RECTIFIED ETHYL ALCOHOL Russian patent published in 2013 - IPC C07C31/08 B01D3/14 C12P7/06 C12G3/12 C07C29/80 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing rectified ethyl alcohol and apparatus for realising said method. The method involves distillation of alcohol and attendant impurities in a mash column, purification of alcohol from head impurities in an epuration column, concentration of alcohol and purification thereof from intermediate impurities and residues of heat impurities in an alcohol column, and separation of impurities in a column for concentration of head and intermediate impurities. The wash distillate is fortified in the concentration part of the mash column; extraction of impurities in the epuration column is carried out with intense feeding of hot water for hydro-selection into the top tray and the middle part of the epuration column; purification of alcohol from methanol is carried out in a methanol column; lutter water from the alcohol column is fed into the top tray and the middle part of the column for concentration of head and intermediate impurities; lutter from the column for concentration of head and intermediate impurities is fed into the top tray and the middle part of the epuration column.

EFFECT: invention enables to obtain ethyl alcohol of high quality with minimum loss thereof with by-products.

2 cl, 1 tbl, 1 dwg