Extraction and storage of liquid/gaseous material

F - Mech Eng,Light,Heat,Weapons – 25 – B

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F25B 45/00 (2006.01) F04F 99/00 (2009.01) F17C 7/00 (2006.01) F04F 11/00 (2006.01)

Patent

CA 2133158

Extraction of liquid/gaseous material for reclamation is effected into a container by reducing the temperature of the container to a sufficiently cold temperature to generate a vacuum within the container sufficient to extract the material from the system to be extracted. The container is cooled by placing the container into an insulated drum containing a glycol bath within which is provided an evaporator duct shaped with a plurality of separate duct portions lying in horizontal planes and spaced vertically with each portion interconnected to the next by a vertical section of the duct. Into the duct is injected carbon dioxide from a compressed liquid supply which is passed through a metering orifice tuned to the length and shape of the duct so that evaporation takes place by the end of the duct. Any liquid remaining at the end of the duct as the temperature cools is returned by a diverter valve into the glycol bath for additional cooling effect.

Extraction d'un matériau liquide/gazeux aux fins de récupération effectuée dans un contenant en abaissant suffisamment la température du contenant de façon à générer une dépression à l'intérieur du contenant suffisante pour extraire le matériau du système. On refroidit le contenant en le plaçant dans un tambour isolé contenant un bain de glycol dans lequel se trouve un conduit évaporateur muni de plusieurs parties distinctes couchées dans des plans horizontaux et espacées verticalement où chaque partie rencontre la suivante par une section verticale du conduit. Du dioxyde de carbone est injecté dans le conduit à partir d'un approvisionnement de liquide comprimé qui traverse un orifice calibré réglé en fonction de la longueur et de la forme du conduit de façon que l'évaporation se produise à l'extrémité du conduit. Tout liquide restant à l'extrémité du conduit lors du refroidissement de la température est retourné par une vanne de dérivation dans le bain de glycol pour un effet refroidissant supplémentaire.

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