Cleaning with liquid carbon dioxide

Details Cleaning with liquid carbon dioxide Cleaning with liquid carbon dioxide

B - Operations, Transporting

08

B

B08B 7/00 (2006.01) D06F 43/00 (2006.01) D06L 1/00 (2006.01)

Patent

CA 2514601

The invention relates to a method for cleaning objects in a cleaning vessel using liquid carbon dioxide, wherein the cleaning vessel is at least partly filled with liquid carbon dioxide. Prior to and/or during the cleaning operation the pressure within said cleaning vessel is raised to a value above the corresponding vapour pressure. A gas other than carbon dioxide is introduced into said cleaning vessel and at least a portion of the cleaning operation is performed after the introduction of said gas.

L'invention concerne un procédé pour nettoyer des objets dans une cuve de nettoyage au moyen de gaz carbonique liquide, la cuve de nettoyage étant au moins partiellement remplie de gaz carbonique liquide. Avant et/ou pendant l'opération de nettoyage, la pression à l'intérieur de ladite cuve de nettoyage est augmentée jusqu'à une valeur supérieure à la pression de vapeur correspondante. Un gaz autre que du dioxyde de carbone est introduit dans la cuve de nettoyage et au moins une partie de l'opération de nettoyage est réalisée après l'introduction de ce gaz.

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