Production of a refrigerant slurry by controlled venting and agi

Details Production of a refrigerant slurry by controlled venting and agi Production of a refrigerant slurry by controlled venting and agi

1974-06-24

1976-10-12

Lutter, Frank W.

Refrigeration

Processes

Circulating external gas

62 45, 62 50, 62 76, F25J 100

Patent

active

039849937

ABSTRACT:
This invention relates to a novel carbon dioxide product comprising a pumpable slurry consisting of finely divided particles of solid phase carbon dioxide dispersed in liquid phase carbon dioxide in which the solid particles are free flowing, i.e. do not agglomerate on standing for periods of time sufficient to permit beneficial commercial use of the product. The slurry is produced by withdrawing gaseous carbon dioxide at a controlled rate from a vessel containing liquid carbon dioxide at the temperature and pressure conditions of the triple point while vigorously agitating the liquid, to produce solid carbon dioxide particles in the liquid. The rate of formation of the solid is controlled to produce small, finely divided particles of solid carbon dioxide rather than large pieces.

REFERENCES:
patent: 1877180 (1932-09-01), Jones
patent: 1884313 (1932-10-01), Small
patent: 3376709 (1968-04-01), Dickey et al.
patent: 3443389 (1969-05-01), Townsend et al.
patent: 3660985 (1972-05-01), Tyree

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