Device and process for the direct carbon dioxide capture from air
AssigneeCarbyon Holding B.V.
InventorsHans Maria Paul De Neve, Jasper Anne Frido Marikus Simons, Dries Van Eyck, Aswin Schouten
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Abstract
The present invention is based on the use of surface adsorption to capture CO2 molecules from air, without requiring the need for bulk absorption within the bulk of the sorbent. Since surface adsorption is a much faster process than bulk absorption, the present invention offers a greatly increased CO2 capture rate, as well as a greatly improved energy efficiency, over conventional systems. The invention involves the use of a molecular monolayer of CO2 sorbent, a process and a system for capturing CO2 from air employing such a molecular monolayer of CO2 sorbent.
Claims19
A process for capturing CO2 from air using a device comprising a sorption chamber, a regeneration chamber and a porous support structure comprising a surface containing pores, the process comprising:
- (i) providing a flow of air through the sorption chamber over the surface of the a porous support structure to obtain air depleted in CO2 and a loaded CO2 sorbent;
- (iii) regenerating the CO2 sorbent at the regeneration chamber to obtain a product flow comprising CO2 and regenerated CO2 sorbent,
- wherein the pores have an interior surface coated with a molecular monolayer of CO2 sorbent having a thickness in the range of 0.1-3 nm, while the central part of the pores is free of sorbent and open to receive gaseous molecules, wherein the CO2 sorbent is a bicarbonate-based sorbent or an amine-based sorbent.
A device for capturing CO2 from air, comprising:
- (a) a porous support structure comprising a surface containing pores, wherein the pores have an interior surface coated with a molecular monolayer of solid state CO2 sorbent having a thickness in the range of 0.1-3 nm, while the central part of the pores is free of sorbent and open to receive gaseous molecules, wherein the CO2 sorbent is a bicarbonate-based sorbent or an amine-based sorbent;
- (b) at least one sorption chamber;
- (c) at least one regeneration chamber;
- (d) an air displacement device or suction device that enables a flow of air over the sorbent support structure through the sorption chamber;
- (e) at least one outlet for discharging CO2, located in the regeneration chamber;
- and
- (f) means for regenerating the sorbent in the regeneration chamber.
A method for capturing CO2 from air using a molecular monolayer of CO2 sorbent comprising:
- providing a porous support comprising pore walls
- coated with the molecular monolayer of CO2 sorbent, wherein the CO2 sorbent is a bicarbonate-based sorbent or an amine-based sorbent and the molecular monolayer has a thickness in the range of 0.1-3 nm, and
- contacting the porous support with a flow of air comprising CO2.
Dependencies are inferred from the claim text.