The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1983
Filed:
May. 29, 1980
Richard Fricker, Derby, GB;
A.G. (Patents) Limited, London, GB;
Abstract
A method for continuous fermentation in which carbohydrate solution is fed continuously into a fermentation zone containing substantially homogeneously distributed yeast and carbohydrate solution whereby the carbohydrate is fermented to ethanol, a proportion of the fermenting liquid continuously passing to a pressurised settling tank, yeast depleted liquid being withdrawn from the upper part of the settling tank and yeast enriched liquid being withdrawn from the lower part of said tank and returned to the fermentation zone, a proportion of yeast being withdrawn without being returned to the fermentation zone, said proportion being such that the concentration of yeast in the fermentation zone is substantially constant, and the pressure within the settling tank is sufficient to prevent the formation of gaseous carbon dioxide. The method enables rapid continuous fermentation to take place using high concentrations of yeast. Apparatus for operating the method is described.