System and method for carbon dioxide capture/storage from engine exhaust
AssigneeValero Services, Inc.
InventorsGraham T. Conway, Thomas E. Briggs, Jr., Terrence F. Alger, III, Jason Daniel Herrera
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Abstract
A system and method for carbon dioxide capture/storage from exhaust utilizing a carbon dioxide separation membrane which may be prepared in the form of a monolithic structure. The captured carbon dioxide may also be stored in a fluid state as supercritical CO2. An integrated fuel delivery and carbon dioxide unloading system is also disclosed, to remove carbon dioxide from a vehicle for sequestration or other industrial purposes.
Claims22
A method for selectively capturing and storing carbon dioxide from exhaust gas comprising:
- providing exhaust gas that contains carbon dioxide;
- contacting said exhaust gas with a carbon dioxide separation membrane comprising a metal oxide selected from the group consisting of Li2ZrO3, Li5AlO4, Li4SiO4, Li4TiO4, Li6Zr2O7, Li2CuO2, Li2SiO3, Na2ZrO3 and mixtures thereof, wherein said carbon dioxide separation membrane is configured to remove carbon dioxide from said exhaust gas;
- converting the removed carbon dioxide from said exhaust into supercritical carbon dioxide (sCO2) and storing said sCO2 in a vessel.
A system for selectively capturing and storing carbon dioxide from exhaust gas comprising:
- a carbon dioxide separation membrane comprising a metal oxide selected from the group consisting of Li2ZrO3, Li5AlO4, Li4SiO4, Li4TiO4, Li6Zr2O7, Li2CuO2, Li2SiO3, Na2ZrO3 and mixtures thereof, wherein said carbon dioxide separation membrane is configured to remove carbon dioxide from exhaust gas;
- a cooler configured to receive carbon dioxide removed from said exhaust gas;
- a compressor configured to receive said cooled carbon dioxide and compress said cooled carbon dioxide and form supercritical carbon dioxide (sCO2);
- and
- a sCO2 storage vessel to receive the sCO2 from said compressor.
A carbon dioxide separation membrane comprising a monolithic structure wherein said monolithic structure comprises a metal oxide selected from the group consisting of Li2ZrO3, Li5AlO4, Li4SiO4, Li4TiO4, Li6Zr2O7, Li2CuO2, Li2SiO3, Na2ZrO3 and mixtures thereof, and wherein said carbon dioxide separation membrane is configured to remove carbon dioxide from exhaust gas.
A carbon dioxide separation membrane comprising a plurality of sections or layers of a metal oxide wherein the metal oxide is selected from the group consisting of Li2ZrO3, Li5AlO4, Li4SiO4, Li4TiO4, Li6Zr2O7, Li2CuO2, Li2SiO3, or Na2ZrO3, wherein one section or layer has a first metal oxide (MO1) composition, one section or layer has a second metal oxide composition (MO2), wherein MO1 is compositionally different from MO2, and wherein said carbon dioxide separation membrane is configured to remove carbon dioxide from exhaust gas.
Dependencies are inferred from the claim text.