US 11,938,443 B2
Hybrid post-combustion CO2 capture system and method
Kunlei Liu, Lexington, KY (US)
Assigned to University of Kentucky Research Foundation, Lexington, KY (US)
Filed by University of Kentucky Research Foundation, Lexington, KY (US)
Filed on Feb. 12, 2021, as Appl. No. 17/174,853.
Claims priority of provisional application 62/975,329, filed on Feb. 12, 2020.
Prior Publication US 2021/0245092 A1, Aug. 12, 2021
Int. Cl. B01D 53/22 (2006.01); B01D 53/14 (2006.01); B01D 53/18 (2006.01); B01D 53/62 (2006.01); B01D 53/78 (2006.01); C01B 32/50 (2017.01)
CPC B01D 53/229 (2013.01) [B01D 53/1418 (2013.01); B01D 53/1425 (2013.01); B01D 53/1475 (2013.01); B01D 53/18 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); C01B 32/50 (2017.08); B01D 2053/221 (2013.01); B01D 2252/20447 (2013.01); B01D 2252/20484 (2013.01); B01D 2252/20489 (2013.01); B01D 2257/504 (2013.01); B01D 2258/0283 (2013.01); C01B 2210/0012 (2013.01); C01B 2210/0025 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A hybrid post-combustion carbon dioxide capture system for capturing carbon dioxide from a flue gas, comprising:
a compressor adapted to produce a compressed flue gas stream at a compression rate determined by external electricity demand;
a membrane-based carbon dioxide separation unit configured to receive a first portion of the compressed flue gas stream from the compressor; and
an aqueous-based carbon dioxide capture unit configured to receive a second portion of the compressed flue gas stream from the compressor whereby the compressed flue gas stream is processed in parallel by the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit wherein the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit are configured to operate without recycling any recovered carbon dioxide removed from the compressed flue gas stream to the compressor, the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit.