US 12,453,941 B2
Carbon dioxide capture system and method of operating carbon dioxide capture system
Koshito Fujita, Yokohama Kanagawa (JP); Daigo Muraoka, Kawasaki Kanagawa (JP); Yasuhiro Kato, Kawasaki Kanagawa (JP); Yusuke Handa, Kita Tokyo (JP); and Satoshi Saito, Yamato Kanagawa (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed on Jan. 14, 2022, as Appl. No. 17/575,994.
Claims priority of application No. 2021-005073 (JP), filed on Jan. 15, 2021.
Prior Publication US 2022/0226770 A1, Jul. 21, 2022
Int. Cl. B01D 53/14 (2006.01); B01D 53/18 (2006.01); B01D 53/92 (2006.01)
CPC B01D 53/1475 (2013.01) [B01D 53/1425 (2013.01); B01D 53/1493 (2013.01); B01D 53/185 (2013.01); B01D 53/92 (2013.01); B01D 2252/204 (2013.01); B01D 2257/504 (2013.01); B01D 2258/01 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A carbon dioxide capture system comprising:
a carbon dioxide capturer configured to cause a carbon dioxide contained in a combustion exhaust gas to be absorbed into an absorbing liquid containing an amine;
an absorbing liquid regenerator configured to cause the carbon dioxide to be released from the absorbing liquid discharged from the carbon dioxide capturer to regenerate the absorbing liquid;
a first washer configured to wash the combustion exhaust gas discharged from the carbon dioxide capturer with a mist of a first cleaning liquid sprayed by a first spray to capture the amine accompanying the combustion exhaust gas;
a second washer configured to wash the combustion exhaust gas discharged from the first washer with a second cleaning liquid to capture the amine accompanying the combustion exhaust gas; and
an absorbing liquid line configured to supply the absorbing liquid regenerated in the absorbing liquid regenerator as the first cleaning liquid to the first spray, wherein
the first cleaning liquid sprayed by the first spray is supplied as the absorbing liquid to the carbon dioxide capturer,
wherein
the first washer has a first receiver arranged below the first spray and configured to receive and store the mist of the first cleaning liquid sprayed from the first spray, and a first washing-capturing space which is arranged below the first spray and in which the mist of the first cleaning liquid sprayed from the first spray comes into contact with the combustion exhaust gas while freely dropping, and
the first washing-capturing space is formed from the first spray to the first receiver and is free of a structure in which the first cleaning liquid flows down on a surface of the structure.