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US 6,351,969 B1Granted
Cryogenic nitrogen production system using a single brazement
AssigneePraxair Technology, Inc.
InventorsBayram Arman, Dante Patrick Bonaquist, Tu Cam Nguyen
Life of this patent
Estimating the term…
Abstract
A cryogenic nitrogen production plant wherein all the heat transfer steps, and preferably all the heat transfer and separation steps, are carried out in a brazement which receives feed air and from which is recovered product nitrogen.
Claims10
Apparatus for producing product nitrogen by the cryogenic separation of feed air comprising:
- (A) a brazement containing a heat exchange section, a condenser, and a separation section;
- (B) means for passing feed air from outside the brazement into the heat exchange section, and means for passing feed air from the heat exchange section to the separation section;
- (C) means for passing waste fluid from the separation section to the condenser, means for passing waste fluid from the condenser to the heat exchange section, and means for passing waste fluid from the heat exchange section to outside the brazement;
- and
- (D) means for passing product nitrogen from the separation section to the heat exchange section, and means for passing product nitrogen from the heat exchange section to outside the brazement for recovery.
2 more elements
Apparatus for producing product nitrogen by the cryogenic separation of feed air comprising:
- (A) a brazement containing a heat exchange section and a condenser, and a separation section outside of the brazement;
- (B) means for passing feed air from outside the brazement into the heat exchange section, and means for passing feed air from the heat exchange section to the separation section;
- (C) means for passing waste fluid from the separation section to the condenser, means for passing waste fluid from the condenser to the heat exchange section, and means for passing waste fluid from the heat exchange section to outside the brazement;
- and
- (D) means for passing product nitrogen from the separation section to the heat exchange section, and means for passing product nitrogen from the heat exchange section to outside the brazement for recovery.
2 more elements
Dependencies are inferred from the claim text.