METHOD OF PRODUCTION OF ETHYL ALCOHOL FROM STARCH-CONTAINING RAW Russian patent published in 2000 - IPC

FIELD: alcohol industry. SUBSTANCE: method involves raw milling, its mixing with water, dilution in the presence of enzyme preparations, mass holding time in capacity at stirring and multiple circulation in circulation contour. Then mass is heated in contact head, sterilized, boiled, cooled under vacuum to saccharification point. Then mass is saccharified by addition enzyme preparations, saccharified must is cooled to fermenting temperature, fermented and alcohol is isolated. In the process of method carrying out mass is held additionally at stirring and multiple circulation in additional capacity connected with the main capacity. In the process of circulation at each stage of holding in inlet of circulating mass flow into circulation contour and in its outlet of each capacity the rubbing through of the batch undissolved particles and their additional milling to homogeneous state are carried out. In the process of saccharification and fermentation multiple circulation of flows is carried out also by addition of enzyme saccharifying preparations and must feeding for saccharification in the process of circulation into circulation flow directly. Fermentation process is carried out into battery of in-line connected fermenters at circulation of fermenting must from the end fermenter into the head one with spraying circulating must on upper layer of fermenting mass for foam quenching. EFFECT: increased yield of alcohol. 4 cl, 1 dwg, 1 tbl, 2 ex