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US 6,112,550 AGranted
Cryogenic rectification system and hybrid refrigeration generation
AssigneePraxair Technology, Inc.
InventorsDante Patrick Bonaquist, Bayram Arman, Joseph Alfred Weber, Walter Joseph Olszewski, Mark Edward Vincett
Life of this patent
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Abstract
A system for generating refrigeration and providing the refrigeration into a cryogenic rectification plant wherein, in addition to refrigeration generated by turboexpansion, further refrigeration for the plant is generated by a recirculating multicomponent refrigerant in a refrigeration circuit.
Claims18
A method for providing refrigeration for a cryogenic rectification plant comprising:
- (A) compressing a multicomponent refrigerant fluid, expanding the compressed multicomponent refrigerant fluid to produce refrigeration and warming the expanded multicomponent refrigerant fluid by indirect heat exchange with a process fluid thereby passing refrigeration from the refrigerant fluid into the process fluid;
- (B) passing refrigeration from the process fluid into the cryogenic rectification plant;
- (C) turboexpanding a fluid stream to generate refrigeration and passing refrigeration from the turboexpanded fluid stream into the cryogenic rectification plant;
- and
- (D) using refrigeration generated by the expanded multicomponent refrigerant fluid and refrigeration generated by the turboexpanded fluid stream to produce at least one product by cryogenic rectification within the cryogenic rectification plant.
2 more elements
Apparatus for providing refrigeration into a cryogenic rectification plant comprising:
- (A) a multicomponent refrigerant fluid refrigeration circuit comprising a compressor, expansion means and a heat exchanger, and means for passing multicomponent refrigerant fluid from the compressor to the expansion means, from the expansion means to the heat exchanger and from the heat exchanger to the compressor;
- (B) means for passing process fluid through the heat exchanger and means for passing refrigeration from the process fluid into a cryogenic rectification plant;
- (C) a turboexpander for generating refrigeration and means for passing refrigeration from the turboexpander into the cryogenic rectification plant;
- and
- (D) means for recovering product from the cryogenic rectification plant.
2 more elements
Dependencies are inferred from the claim text.