Continuous method for making rod-like solid carbon dioxide extru

Details Continuous method for making rod-like solid carbon dioxide extru Continuous method for making rod-like solid carbon dioxide extru

1976-04-05

1977-07-05

Lutter, Frank W.

Refrigeration

Processes

Circulating external gas

62 35, F25J 100

Patent

active

040337367

ABSTRACT:
A novel method in accordance with the present invention comprises the formation of compacted pellets of solid phase carbon dioxide from liquid phase carbon dioxide to form snow, compressing said snow to force the same through an extrusion passageway forming elongated, rod-like extrusions of compacted solid phase carbon dioxide and exerting back pressure against the rod-like extrusion as they leave the passageways thereby stabilizing the extrusions permitting the escape of gas without fracturing the same.

REFERENCES:
patent: 1965922 (1934-07-01), Fievet
patent: 2071302 (1937-02-01), Hill
patent: 2200577 (1940-05-01), Lozon
patent: 2214347 (1940-09-01), Post
patent: 2307013 (1943-01-01), Batzle
patent: 2493759 (1950-01-01), Freygang
patent: 3443389 (1969-05-01), Townsend et al.
patent: 3670516 (1972-06-01), Duron et al.

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