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US 6,604,367 B2Granted
System for providing refrigeration for chemical processing
AssigneePraxair Technology, Inc.
InventorsM. Mushtaq Ahmed, Theodore Fringelin Fisher
Life of this patent
Estimating the term…
Abstract
A system for providing refrigeration to a chemical processing operation wherein a refrigerant fluid is compressed and cooled, and a portion turboexpanded prior to being passed to a chemical processing operation for direct contact or indirect heat exchange.
Claims14
Apparatus for providing refrigeration for chemical processing comprising:
- (A) a compressor, a heat exchanger, and means for passing a first refrigerant fluid stream from the compressor to the heat exchanger;
- (B) a turboexpander, means for passing a second refrigerant fluid stream from the compressor to the heat exchanger, and means for passing the second refrigerant fluid stream from the heat exchanger to the turboexpander;
- (C) a chemical processing operation, means for passing the first refrigerant fluid stream from the heat exchanger to the chemical processing operation, and means for passing the second refrigerant fluid stream from the turboexpander to the chemical processing operation;
- and
- (D) means for passing refrigerant fluid from the chemical processing operation to the heat exchanger.
2 more elements
A method for providing refrigeration for chemical processing:
- (A) compressing a refrigerant fluid to produce compressed refrigerant fluid;
- (B) cooling a first portion of the compressed refrigerant fluid and passing the cooled first portion of the refrigerant fluid to a chemical processing operation to provide cooling for the chemical processing operation;
- (C) cooling a second portion of the compressed refrigerant fluid, turboexpanding the cooled second portion of the refrigerant fluid, and passing the turboexpanded second portion of the refrigerant fluid to the chemical processing operation to provide cooling for the chemical processing operation;
- and
- (D) withdrawing refrigerant fluid from the chemical processing operation and passing refrigerant fluid withdrawn from the chemical processing operation in indirect heat exchange with at least one of the cooling first portion of the compressed refrigerant fluid and the cooling second portion of the compressed refrigerant fluid.
2 more elements
Dependencies are inferred from the claim text.