Process for producing very high purity helium or hydrogen
AssigneesAir Liquide Advanced Technologies U.S. LLC, L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsPaul TERRIEN, Pierre-Philippe GUERIF
Life of this patent
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Abstract
A method of purifying a gas composed of a product gas and one or more impurity gases including combining a feed stream with a second stream thereby forming a combined feed stream, introducing the combined feed stream into a pressure swing adsorption device, thereby producing a high purity product gas stream and an off-gas stream, and introducing the off-gas stream into a membrane separation device, thereby producing a gas stream lean in product gas and a permeate stream.
Claims20
A method of purifying a gas composed of a product gas and one or more impurity gases, comprising:
- combining a feed stream with a second stream thereby forming a combined feed stream,
- introducing the combined feed stream into a pressure swing adsorption device, thereby producing a high purity product gas stream and an off-gas stream, and
- introducing the off-gas stream into a membrane separation device, thereby producing a gas stream lean in product gas and a permeate stream.
Dependencies are inferred from the claim text.