Temperature swing adsorption of CO2 from flue gas using a parallel channel contractor
First Claim
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1. A process for the removing CO2 from a flue gas stream containing CO2, which process comprises:
- a) conducting said flue gas stream to a temperature swing adsorption gas separation unit wherein the gas separation unit contains at least one adsorbent contactor comprised of;
i) a process gas inlet end; and
ii) a process gas outlet end;
wherein the gas inlet end and the gas outlet end are in fluid connection by a plurality of open flow channels wherein the surface of the open flow channels are comprised of an adsorbent material that has an adsorption selectivity for CO2 over at least one other gaseous component of the flue gas stream of greater than 1, thereby resulting in a substantially CO2-free flue gas stream and CO2 adsorbed onto said adsorbent material;
b) venting said substantially CO2-free flue gas stream into the atmosphere; and
c) heating said adsorbent material having CO2 adsorbed thereon to an effective temperature that results in the desorption of at least a fraction of CO2, thereby resulting in a CO2 rich stream.
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Abstract
The adsorption of CO2 from flue gas streams using temperature swing adsorption. Adsorbent contactors are used in the temperature swing adsorption unit that contain a plurality of substantially parallel channels comprised of or coated with an adsorbent material that is selective for adsorbing CO2 from flue gas.
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25 Claims
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1. A process for the removing CO2 from a flue gas stream containing CO2, which process comprises:
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a) conducting said flue gas stream to a temperature swing adsorption gas separation unit wherein the gas separation unit contains at least one adsorbent contactor comprised of; i) a process gas inlet end; and ii) a process gas outlet end; wherein the gas inlet end and the gas outlet end are in fluid connection by a plurality of open flow channels wherein the surface of the open flow channels are comprised of an adsorbent material that has an adsorption selectivity for CO2 over at least one other gaseous component of the flue gas stream of greater than 1, thereby resulting in a substantially CO2-free flue gas stream and CO2 adsorbed onto said adsorbent material; b) venting said substantially CO2-free flue gas stream into the atmosphere; and c) heating said adsorbent material having CO2 adsorbed thereon to an effective temperature that results in the desorption of at least a fraction of CO2, thereby resulting in a CO2 rich stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification