Process and apparatus for obtaining krypton and/or xenon
OwnerMatthais Meilingerinventor
Life of this patent
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Abstract
The process and apparatus are used to obtain krypton and/or xenon by cryogenic separation of air. Krypton and xenon are enriched to form a krypton/xenon concentrate. Krypton and/or xenon is obtained from the krypton/xenon concentrate by means of distillation. Prior to distillation, the krypton/xenon concentrate is passed over a catalyst bed which contains TiO2 and/or ZrO2. In the process, at least one halogen compound contained in the krypton/xenon concentrate is reacted.
Claims10
Process for obtaining krypton and/or xenon by cryogenic separation of air, in which krypton and xenon are enriched to form a krypton/xenon concentrate and krypton and/or xenon are obtained from the krypton/xenon concentrate by means of distillation, characterized in that the krypton/xenon concentrate is passed over a catalyst bed which contains a transition metal oxide, in particular TiO2 and/or ZrO2, and at least one fully halogenated compound contained in the krypton/xenon concentrate, in particular at least one fully fluorinated compound, is reacted in the catalyst bed.
Apparatus for obtaining krypton and/or xenon by cryogenic separation of air, having at least one separation column for nitrogen/oxygen separation, having means for extracting a krypton/xenon concentrate from the separation column, having a distillation device for obtaining krypton and/or xenon from the krypton/xenon concentrate, characterized by a purification device which has a catalyst bed that contains TiO2 and/or ZrO2, the purification device being arranged upstream of the distillation device for obtaining krypton and/or xenon from the krypton/xenon concentrate and having means for introducing krypton/xenon concentrate into the catalyst bed.
Dependencies are inferred from the claim text.