Abstract: The present invention concerns to the distillation industry and can be used in units for production of rectified alcohol. The technical result on the achievement of which the present invention is directed consists in power consumption decrease. Fresh wort and yeast are supplied to the preparatory vessel 1 through the line 2 and the branch pipe 3 correspondingly in a demanded proportion. As a result the fermentation of wort begins and initial beer is formed. The working temperature and consistence of initial beer is provided by the stirrer 4 and heat exchanger 5, and then it is directed to the working section 6. The process of fermentation and emission of ethanol proceeds in the initial beer in the working section 6. Simultaneously with the process of fermentation the carbon dioxide, ethanol and water vapours is carried out through the vacuum line 7 and the further beer fermentation occurs at the lowered pressure. Not fully fermented beer is brought out from section 6 and supply to decanter 8.