US 11,919,774 B2
Cooling absorption tower, CO2 recovery device including same, and CO2 recovery method
Yoshiki Sorimachi, Yokohama (JP); Takashi Kamijo, Yokohama (JP); and Shinya Kishimoto, Yokohama (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/599,762
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Feb. 10, 2020, PCT No. PCT/JP2020/005144
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/202804, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-072682 (JP), filed on Apr. 5, 2019.
Prior Publication US 2022/0153592 A1, May 19, 2022
Int. Cl. C01B 32/50 (2017.01); B01D 53/14 (2006.01); B01D 53/18 (2006.01); B01D 53/62 (2006.01); B01D 53/78 (2006.01)
CPC C01B 32/50 (2017.08) [B01D 53/1418 (2013.01); B01D 53/1475 (2013.01); B01D 53/18 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); B01D 2252/10 (2013.01); B01D 2252/20478 (2013.01); B01D 2252/504 (2013.01); B01D 2257/504 (2013.01); B01D 2258/0283 (2013.01); C01P 2006/80 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A CO2 recovery device, comprising a cooling absorption tower including:
an outer shell;
a cooling section for cooling a flue gas, the cooling section being disposed in the outer shell; and
an absorbing section configured to cause CO2 in the flue gas cooled by the cooling section to be absorbed in an absorption solvent, the absorbing section being disposed in the outer shell and above the cooling section,
wherein the absorbing section includes a chimney tray for storing the absorption solvent which has absorbed CO2 in the flue gas, the chimney tray being disposed at a lowest portion of the absorbing section,
wherein the CO2 recovery device further comprises:
an absorption solvent tank disposed below the absorbing section; and
a tank introduction line for introducing the absorption solvent stored in the chimney tray to the absorption solvent tank.