Apparatus for processing a pasty product in a vacuum

Details Apparatus for processing a pasty product in a vacuum Apparatus for processing a pasty product in a vacuum

1990-07-02

1992-06-30

Yeung, George

Drying and gas or vapor contact with solids

Apparatus

Vacuum

426448, 426473, F26B 1700

Patent

active

051251680

ABSTRACT:
In order to dry continuously a pasty product being processed in a wet condition the product is fed via an extruder into a vacuum zone, which e.g. can be formed by a vacuum band drier. The heating of the product occurring due to the extrusion leads to a rapid expansion and drying in the vacuum. An additional feeding of heat is depending on the product no longer necessary. Accordingly the dwell time of the product in the vacuum can be reduced such that the productivity can be increased. Furthermore it is possible to operate at lower temperatures such that the quality of the product is not detrimentally influenced.

REFERENCES:
patent: 3612411 (1971-10-01), Oetjen et al.
patent: 4251558 (1981-02-01), Kobayashi et al.
patent: 4574495 (1986-03-01), Brander

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