Process for the cryogenic separation of oxygen containing mixtures, organized lining therefore and air distillation column including such lining
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsJean-Yves Lehman, Jean-Claude Colin
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Abstract
A process for the cryogenic separation of mixtures containing oxygen to obtain a produce having a high concentration of oxygen. In this process, a heat and material exchange occurs in counter-current between a descending liquid and a rising gas in at least one transfer zone including a bundle of organized linings consisting of cross-undulated metallic layers. In at least one transfer zone where the concentration of oxygen is higher than 98%, the layers are made of a sheet of aluminum having a thickness between 0.3 and 1 mm. Additionally, the bundles of layers have a specific surface lower than 400 m.sup.2 /m.sup.3.
Claims16
Process for the cryogenic separation of mixtures containing oxygen to give a product having a high concentration of oxygen, comprising the step of effecting a heat and material exchange in counter-current between a descending liquid and a rising gas in at least one transfer zone including a bundle of organized linings consisting of cross-undulated metallic layers, wherein at least in one transfer zone where the concentration of oxygen is higher than 98%, the layers are made of a sheet of aluminum having a thickness between 0.3 and 1 mm, the bundle of layers having a specific surface lower than 400 m.sup.2 /m.sup.3.
Organizing lining for the cryogenic separation of mixtures containing oxygen comprising cross-undulating, metallic layers, which permit heat and material exchange between a descending liquid and a rising gas wherein, for an oxygen concentration of more than 98% in a region surrounding said lining, said lining comprises an arrangement of layers of aluminum sheet having a thickness between 0.3 and 1 mm and has a predetermined wave pitch and height such that the lining has a specific surface less than 400 m.sup.2 /m.sup.3.
Dependencies are inferred from the claim text.