Offshore liquefaction process without compression
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et I'Exploitation des Procedes Georges Claude
InventorsMichael A. TURNEY, Alain GUILLARD
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Abstract
A process for producing liquid oxygen, including an offshore platform the system including cooling a high-pressure nitrogen gas stream in a main heat exchanger, thereby producing a cooled high-pressure nitrogen gas stream, expanding the cooled high-pressure nitrogen gas stream in a turbo-expander, thereby producing a cold low-pressure nitrogen gas stream, warming the cold low-pressure nitrogen gas stream by indirect heat exchange with a high-pressure gaseous oxygen stream, thereby producing a liquefied oxygen stream and a warm low-pressure nitrogen gas stream, wherein, at least a portion of the warm low-pressure nitrogen gas stream is vented to the atmosphere.
Claims12
A process for producing liquid oxygen, comprising an offshore platform comprising:
- a) cooling a high-pressure nitrogen gas stream in a main heat exchanger, thereby producing a cooled high-pressure nitrogen gas stream,
- b) expanding the cooled high-pressure nitrogen gas stream in a turbo-expander, thereby producing a cold low-pressure nitrogen gas stream,
- c) warming the cold low-pressure nitrogen gas stream by indirect heat exchange with a high-pressure gaseous oxygen stream, thereby producing a liquefied oxygen stream and a warm low-pressure nitrogen gas stream,
- wherein, at least a portion of the warm low-pressure nitrogen gas stream is vented to the atmosphere.
Dependencies are inferred from the claim text.