CRYOGENIC AIR SEPARATION

A cryogenic air separation system wherein nitrogen vapor from a higher pressure column and oxygen liquid from a lower pressure column each pass down through a once-through main condenser in heat exchange relation and some but not all of the oxygen liquid is vaporized such that the oxygen liquid and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JIBB, Richard, John, LOCKHETT, Michael, J, ROYAL, John, H, CHAKRAVARTHY, Vijayaraghavan, Srinivasan
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A cryogenic air separation system wherein nitrogen vapor from a higher pressure column and oxygen liquid from a lower pressure column each pass down through a once-through main condenser in heat exchange relation and some but not all of the oxygen liquid is vaporized such that the oxygen liquid and vapor exit the condenser in a liquid to vapor mass flowrate ratio within the range of from 0.05 to 0.5 whereby the need for a recirculation pump to ensure avoidance of oxygen boiling to dryness is eliminated.