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US 6,053,008 AGranted
Method for carrying out subambient temperature, especially cryogenic, separation using refrigeration from a multicomponent refrigerant fluid
AssigneePraxair Technology, Inc.
InventorsBayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, Mark Edward Vincett
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Abstract
A method for low temperature separation of fluids wherein the separation process is sustained by refrigeration generated by a recirculating multicomponent refrigerant fluid.
Claims15
A method for separating a fluid mixture comprising:
- (A) compressing a multicomponent refrigerant fluid;
- (B) cooling the compressed multicomponent refrigerant fluid to at least partially condense the multicomponent refrigerant fluid;
- (C) expanding the cooled, compressed multicomponent refrigerant fluid to generate refrigeration;
- (D) employing said refrigeration to maintain low temperature conditions for a fluid mixture;
- (E) separating the fluid mixture into at least one more volatile vapor component and into at least one less volatile liquid component;
- and
- (F) recovering at least one of said more volatile vapor component(s) and less volatile liquid component(s).
4 more elements
A method for carrying out cryogenic rectification of feed air comprising:
- (A) passing feed air into a cryogenic rectification plant and separating the feed air by cryogenic rectification within the cryogenic rectification plant to produce at least one of product nitrogen and product oxygen;
- (B) compressing a multicomponent refrigerant fluid, cooling the compressed multicomponent refrigerant fluid to at least partially condense the multicomponent refrigerant fluid, expanding the cooled, compressed multicomponent refrigerant fluid to generate refrigeration, and employing said refrigeration to sustain said cryogenic rectification;
- and
- (C) recovering at least one of product nitrogen and product oxygen from the cryogenic rectification plant.
1 more element
Dependencies are inferred from the claim text.