Screen holding apparatus in a liquid cryogen pressure vessel

Details Screen holding apparatus in a liquid cryogen pressure vessel Screen holding apparatus in a liquid cryogen pressure vessel

1979-12-26

1982-01-26

Millin, V.

Tobacco

Tobacco treatment

131291, 131300, 131900, 62 64, 62384, 62340, 62 47, A24B 318

Patent

active

043123694

ABSTRACT:
In a pressure vessel of the type used for processing a product with a liquid cryogen such as the impregnation of tobacco with liquid carbon dioxide for expansion thereof, a withdrawal door, pivotally hinged to open to permit gravitational discharge of the processed product, includes a grating to support the product in the vessel when the door is closed. A wire screen mesh is disposed on the grating to permit gaseous and liquid cryogen to pass therethrough while substantially preventing product from passing therethrough. A holding apparatus includes means for securely holding the screen fixed relative to the grating at the periphery and interior surface portions of the screen, the apparatus preferably including a gridded structure for minimizing stretching and tearing of the screen during discharge of the processed product from the vessel.

REFERENCES:
patent: 3857254 (1974-12-01), Lobel
patent: 4165618 (1979-08-01), Tyree, Jr.

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