Method and apparatus for producing carbon dioxide units

Details Method and apparatus for producing carbon dioxide units Method and apparatus for producing carbon dioxide units

1987-10-02

1988-10-25

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 35, 62341, F25J 500

Patent

active

047801190

ABSTRACT:
Carbon dioxide (CO.sub.2) solid discs (dry ice) are produced from liquid carbon dioxide injected into an extrusion cylinder in which the extrusion piston compresses dry snow and extrudes it through a fixed die, thereby producing pellets of dry ice which are fed by gravity into a forming cylinder chamber in which is operated a hydraulic cylinder compresses the pellets into discs. The operation is controlled by switches and hydraulic system.

REFERENCES:
patent: 2151855 (1939-03-01), Kobold
patent: 2282460 (1942-05-01), Dickey
patent: 3576112 (1971-04-01), Frost et al.
patent: 3786645 (1974-01-01), Cann
patent: 3835657 (1974-09-01), Scudder

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