Back to results
US 5,475,984 AGranted
Method and apparatus for producing frozen particles using an entrapment zone of atomized cryogenic liquid droplets
AssigneeE. I. Du Pont de Nemours and Company
InventorsNicholas R. Fermani, Mark G. Fletcher
Life of this patent
Estimating the term…
Abstract
This invention relates to an apparatus and process for producing frozen particles of a liquid product having a liquid product nozzle for introducing liquid product droplets to be frozen and a plurality of cryogenic nozzles for introducing a cryogenic liquid directed away from the liquid product droplets.
Claims13
An apparatus for utilizing a cryogenic liquid for producing frozen particles of a liquid product which comprises:
- (a) a housing;
- (b) means positioned in the housing including at least three cryogenic liquid nozzles for producing a substantially continuous, annular downwardly directed circumferential wall of cryogenic liquid defining an interior entrapment zone;
- (c) a liquid product nozzle positioned in the housing for introducing droplets of the liquid product into the entrapment zone whereby the cryogenic liquid freezes the liquid product droplets to product frozen particles;
- and
- (d) a baffle located between the liquid product nozzle and the plurality of cryogenic liquid nozzles to shield the liquid nozzle and to prevent freezing of the liquid product in the liquid nozzle.
2 more elements
A process for utilizing a cryogenic liquid for producing frozen particles of a liquid product in a housing which comprises the steps of:
- (a) introducing the cryogenic liquid into the housing in an annular, downward direction creating an substantially continuous downwardly directed circumferential wall of cryogenic liquid, defining an interior entrapment zone;
- and
- (b) introducing droplets of the liquid product into the entrapment zone,
- whereby the cryogenic liquid freezes the liquid product droplets to produce frozen particles.
1 more element
Dependencies are inferred from the claim text.