Patent · US Expired

Apparatus for fermentation of organic material

US4698310A · kind A · utility

4Cited by

8References

6Claims

0Family size

Assignee

ALFA LAVAL CORPORATE AB · SE

Inventors

Bert S. Wikholm · Tullinge, SE
Torsten L. T. Carlsson · Gately Drive, SE
Ake R. ster · Tumba, SE

Key dates

Filing date	Sep 28, 1982
Grant date	Oct 6, 1987
Priority date	—
Expiry date	Sep 28, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/30
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A horizontal cylindrical tank contains a conveyor screw rotatable on a horizontal axis below the symmetry axis of the tank, the latter having at its lower part an inlet at one end for organic material and an outlet at the other end for fermented material. A heating medium is circulated through one of the bearings, a frame supporting the screw, and the latter's peripheral portion. The screw moves sludge along the tank bottom toward the outlet and recirculates fermented material back to the inlet region via a space at one side of the screw, while evolved gas discharges through an outlet in the top of the tank.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.