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US 2011/0296868 A1Published application
CO2 Recovery Method Using Cryo-Condensation
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsFrederick Lockwood, Alain Ravex, Jean-Pierre Tranier, Claire Weber
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Abstract
The present invention relates to a method of capturing carbon dioxide in a fluid comprising at least one compound more volatile than carbon dioxide CO2, for example methane CH4, oxygen O2, argon Ar, nitrogen N2, carbon monoxide CO, helium He and/or hydrogen H2.
Claims16
1-15. (canceled)
A method for producing at least one CO2-lean gas and one or more CO2-rich primary fluids from a process fluid containing CO2 and at least one compound more volatile than CO2 comprising:
- a) a first cooling of said process fluid by exchange of heat with no change in state;
- b) a second cooling of at least part of said process fluid cooled in step a) so as to obtain at least one solid containing predominantly CO2 and at least said CO2-lean gas;
- and
- c) the liquefaction and/or sublimation of at least part of said solid and making it possible to obtain said one or more CO2-rich primary fluids;
- wherein at least part of the cold required to perform said first cooling and/or said second cooling is supplied by one or more refrigerating cycles each comprising at least one near-isentropic expansion of a gas.
2 more elements
Dependencies are inferred from the claim text.