Pellet extruding machine

Details Pellet extruding machine Pellet extruding machine

1994-11-29

1996-08-27

Tapolcai, William E.

Refrigeration

Cryogenic treatment of gas or gas mixture

Solidification

62341, 55523, F25J 100

Patent

active

055489605

ABSTRACT:
An extruder and methods for converting pressurized liquid CO.sub.2 feed into dry ice pellets of predetermined shape and size, wherein the CO.sub.2 snow formation, CO.sub.2 snow compaction, and dry ice pellet extrusion phases occur simultaneously to achieve production rates on the order of 700-1000 lbs/hr. The increased production rates are achieved utilizing sintered plastic filter media to provide enhanced removal of CO.sub.2 gas from the CO.sub.2 snow formation chamber.

REFERENCES:
patent: Re30632 (1981-06-01), Breysse et al.
patent: 3576112 (1971-04-01), Frost et al.
patent: 3762566 (1973-10-01), Del Pico
patent: 3837146 (1974-09-01), Faure et al.
patent: 4227527 (1980-10-01), De Frank et al.
patent: 4457487 (1984-07-01), Steigerwald
patent: 5419138 (1995-05-01), Anderson et al.

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