F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
F26B 5/06 (2006.01) F26B 9/06 (2006.01)
Patent
CA 2215871
The present invention provides methods and apparatus for freeze drying in which a solution, which can be a radioactive salt dissolved within an acid, is frozen into a solid on vertical plates provided within a freeze drying chamber. The solid is sublimated into vapor and condensed in a cold condenser positioned above the freeze drying chamber and connected thereto by a conduit. The vertical positioning of the cold condenser relative to the freeze dryer helps to help prevent substances such as radioactive materials separated from the solution from contaminating the cold condenser. Additionally, the system can be charged with an inert gas to produce a down rush of gas into the freeze drying chamber to also help prevent such substances from contaminating the cold condenser.
Méthodes et appareil pour cryodessiccation, où une solution, qui peut être un sel radioactif dissous dans un acide, est congelé à l'état solide sur des plaques verticales, installées dans une chambre de cryodessiccation. Le solide est sublimé en vapeur, laquelle passe dans un condenseur installé au-dessus du compartiment de cryodessiccation et connecté à ce dernier par un conduit. Le positionnement vertical du condenseur froid par rapport au cryodessiccateur, aide à empêcher les substances, comme les matières radioactives séparées de la solution, à contaminer le condenseur. De plus, le système peut être chargé avec un gaz inerte produisant un flux gazeux dans le compartiment de cryodessiccation, ce qui contribue aussi à empêcher que ces substances contaminent le condenseur.
Coppa Nicholas V.
Renzi Ernesto
Stewart Paul
Gowling Lafleur Henderson Llp
The Boc Group Inc.
The Regents Of The University Of California
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