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AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsPierre Barjhoux, Camille Bouvier, Fabien Durand, Martin Staempflin, Golo Zick
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Device and method for purifying a gas mixture to produce a concentrated gas, notably neon, starting from a mixture comprising neon, said device including, in a cold box housing a cryogenic purification circuit comprising, in series, at least one unit for purifying the mixture by cryogenic adsorption at a temperature between 65K and 100K and notably 65K, then a unit for cooling the mixture to a temperature between 25 and 65 K and then a unit for cryogenic distillation of the mixture to produce the concentrated liquid at the outlet of the cryogenic distillation unit, characterized in that the unit for cooling the mixture to a temperature between 25 and 65 K comprises at least one cryocooler that extracts thermal power from the mixture via a heat exchanger.
A device for purifying a gaseous fluid mixture to produce a concentrated neon gas, starting from a mixture comprising neon, said device comprising, in a cold box housing a cryogenic purification circuit comprising, in series, at least one unit for purifying the mixture by cryogenic adsorption at a temperature between 65K and 100K, then a unit for cooling the fluid mixture to a temperature between 25 and 65 K and then a unit for cryogenic distillation of the fluid mixture to produce a concentrated liquid at the outlet of the cryogenic distillation unit, characterized in that the unit for cooling the fluid mixture to a temperature between 25 and 65 K comprises at least one cryocooler that extracts thermal power from the mixture via a heat exchanger, the at least one cryocooler comprising at least one cryocooler of the Gifford McMahon type or a pulsed gas tube or a cryocooler of the Stirling type.
Dependencies are inferred from the claim text.