METHOD OF MOLASSES WORT FERMENTATION Russian patent published in 1995 - IPC

FIELD: alcohol industry. SUBSTANCE: molasses wort at concentration 10-12% CB is fed to yeast-generation operated by gradient-continuous method for three stages of aeration involving medium recirculation from the third stage to the first one. Yeast at concentration 3-4% CB and containing biomass and alcohol (25-29 g/l and 3.5-4.0 vol. respectively) were fed to the head apparatus of fermentation device. Undiluted molasses is fed to the three fermentation apparatus to increase the parental wort conentration up to 27.0-27.5% CB. After filling all fermentation apparatus the matured mash is obtained containing alcohol (11-12 vol.) and biomass (25-27 g/l) which is fed to separator. Condensed yeast suspension is recirculated to the head apparatus and used as sowing material for anaerobic process, and yeastless mash is fed to distilling off. From this point the mash after aerobic yeast-generation does not feed to the fermentation battery but fed to separator where baker yeast biomass is obtained. Yeastless mash is fed to the head fermentation apparatus. Undiluted mash is fed to three initial fermentation apparatus to make parental medium concentration 27.0-27.5% CB followed by anaerobic fermentation. EFFECT: increased yield of ethanol. 1 tbl, 1 dwg