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US 6,477,859 B2Granted
Integrated heat exchanger system for producing carbon dioxide
AssigneePraxair Technology, Inc.
InventorsKenneth Kai Wong, Dante Patrick Bonaquist, Henry Edward Howard
Life of this patent
Estimating the term…
Abstract
A system for producing carbon dioxide wherein carbon dioxide feed fluid is first processed in a cooling section of an integrated heat exchanger before purification in a column, and wherein column bottom fluid operates within one of an evaporating section and desuperheating section of the heat exchanger and refrigerant fluid operates within the other of the evaporating section and desuperheating section of the heat exchanger.
Claims28
A method for producing carbon dioxide comprising:
- (A) passing carbon dioxide feed fluid through a cooling section of a heat exchanger having a cooling section, a desuperheating section and an evaporating section to produce cooled carbon dioxide feed fluid;
- (B) passing cooled carbon dioxide feed fluid into a separation means and producing carbon dioxide product fluid in the separation means;
- (C) recovering carbon dioxide product fluid from the lower portion of the separation means as product carbon dioxide;
- and
- (D) passing carbon dioxide product fluid through one of the evaporating section and the desuperheating section of the heat exchanger, and passing refrigerant fluid through one of the evaporating section and the desuperheating section of the heat exchanger.
2 more elements
Apparatus for producing carbon dioxide comprising:
- (A) a heat exchanger having a cooling section, a desuperheating section and an evaporating section, and means for passing carbon dioxide feed fluid to the cooling section of the heat exchanger;
- (B) a separation means and means for passing carbon dioxide feed fluid from the cooling section of the heat exchanger to the separation means;
- (C) means for recovering carbon dioxide product fluid from the lower portion of the separation means;
- (D) means for passing carbon dioxide product fluid from the lower portion of the separation means through one of the desuperheating section and evaporating section of the heat exchanger, and means for passing refrigerant fluid through one of the evaporating section and the desuperheating section of the heat exchanger.
1 more element
Dependencies are inferred from the claim text.