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US 11,305,229 B1Granted
CO2 sorbent materials for advanced carbon capture technologies and dielectric barrier discharge (DBD) plasma based processes
OwnerJuan He, Tu Nguyen +1inventors
InventorsJuan He, Tu Nguyen, Mahendra Sunkara
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Abstract
The present development is a method for capturing and purifying CO2 from a flue gas stream using a metal aluminate nanowire absorbent and then regenerating the absorbent. After the CO2 is adsorbed into the absorbent, the adsorbent is regenerated by subjecting the CO2 saturated adsorbent to a dielectric barrier discharge plasma or to a microwave plasma or to a radio frequency (RF) plasma while ensuring that the external temperature does not exceed 200° C.
Claims16
A method for capturing and purifying CO2 from a flue gas stream wherein the method comprises:
- a. providing a CO2 sorbent material selected from lithium aluminate nanowires, calcium aluminate nanowires, sodium aluminate nanowires, potassium aluminate nanowires or a combination thereof;
- b. packing the CO2 sorbent material in a column;
- c. heating the CO2 sorbent material to a predetermined temperature;
- d. allowing the flue gas stream to pass through the CO2 sorbent material in the column while maintaining the sorbent material temperature at the predetermined temperature;
- e. continuing the flue gas flow through the CO2 sorbent material until the CO2 sorbent material becomes a CO2 saturated adsorbent;
- f. venting the flue gas stream from the column;
- and,
- g. regenerating the CO2 sorbent material by causing the CO2 saturated adsorbent to desorb.
5 more elements
Dependencies are inferred from the claim text.