C - Chemistry – Metallurgy – 12 – G
Patent
C - Chemistry, Metallurgy
12
G
195/141, 195/4
C12G 3/02 (2006.01) C12M 1/04 (2006.01) C12M 1/08 (2006.01) C12P 7/06 (2006.01)
Patent
CA 1125200
ABSTRACT OF THE DISCLOSURE A method and apparatus are provided for maintaining the activity of yeast in a continuous fermentation of sugar-contain- ing mash to alcohol. In the continuous fermentation process fresh mash is continuously added and alcoholic solution contain- ing yeast is continuously drawn off. This solution is permitted to settle. At least a portion of the settled yeast is returned to the fermentation process while the non-settled or non-flocculated yeast cells and bacteria are drawn off along the alcohol- containing solution. This results in considerable lowering of the danger of infection from the bacteria as well as increase in concentration of yeast in the fermenter and shortening of the duration of time of the mash in the fermenter, thus increasing productivity. The apparatus for effecting this process comprises a fermentation vat and a yeast sedimentation container, with conduit from the fermentation vat to the sedimentation container of fermented mash with return conduit for settled yeast and a conduit our of the settling stage of the alcoholic solution containing non-settled yeast and bacteria.
327750
Swabey Ogilvy Renault
Waagner-Biro Aktiengesellschaft
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