Continuous freeze drying

Details Continuous freeze drying Continuous freeze drying

1984-11-20

1986-05-27

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 92, 62 74, 62347, F26B 506, F26B 1330, F25C 100

Patent

active

045906840

ABSTRACT:
Apparatus and method for continuous freeze drying in which a slurry of material to be freeze dried is provided. The slurry is advanced along a predetermined path having a freezing area in which one or more plugs of frozen slurry are provided to afford a pressure drop. Heat is applied to the frozen slurry as it exits into an area of reduced pressure. The heat and reduced pressure cause the frozen slurry to sublime.

REFERENCES:
patent: 3431655 (1969-03-01), Grover et al.
patent: 3445247 (1969-05-01), Baerwald
patent: 3477137 (1969-11-01), Van Gelder

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