Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1996-12-12
1997-11-04
Capossela, Ronald C.
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62924, F25J 302
Patent
active
056827652
ABSTRACT:
A cryogenic rectification system wherein additional stripping vapor for the lower pressure column of a double column is produced from higher pressure column bottoms and feed for the argon column is taken from the upper portion of the lower pressure column and first processed through a stripping column. Lower purity oxygen is recovered either directly from the lower pressure column or after first being processed in an auxiliary column which additionally produces higher purity oxygen.
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Bonaquist Dante Patrick
Lynch Nancy Jean
Capossela Ronald C.
Ktorides Stanley
Praxair Technology Inc.
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