Method and apparatus for generating an ice crystal suspension

Details Method and apparatus for generating an ice crystal suspension Method and apparatus for generating an ice crystal suspension

1987-04-15

1988-03-29

Capossela, Ronald C.

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

34 5, 34 15, 34 92, 62123, 137 13, B01D 904

Patent

active

047341165

ABSTRACT:
The apparatus employs a compressor for compressing a flow of water vapor with an ethanol additive and a condensation chamber in which the compressed water vapor may be condensed to form ice crystals. A coolant circuit in provided in the condensation chamber to melt the ice crystals from the heat exchange surfaces for subsequent formation of primary ice in a bottom chamber. A recirculation circuit is provided to convey the primary ice into a freeze drying chamber for freeze-drying of the vapor at the triple point. The resulting product is passed to a water separator prior to ultimate use.

REFERENCES:
patent: 3350297 (1967-10-01), Torobin
patent: 4003213 (1977-01-01), Cox
patent: 4081257 (1978-03-01), Lassmann
patent: 4218893 (1980-08-01), Cheng et al.
patent: 4474031 (1984-10-01), Collet

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