US 12,472,460 B2
Apparatus for reducing greenhouse gas emission in vessel and vessel including the same
Byung Tak Nam, Geoje-si (KR)
Assigned to DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD., Geoje-si (KR)
Appl. No. 18/031,354
Filed by DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD., Geoje-si (KR)
PCT Filed Dec. 17, 2020, PCT No. PCT/KR2020/018602
§ 371(c)(1), (2) Date Apr. 12, 2023,
PCT Pub. No. WO2022/092427, PCT Pub. Date May 5, 2022.
Claims priority of application No. 10-2020-0139692 (KR), filed on Oct. 26, 2020; and application No. 10-2020-0154967 (KR), filed on Nov. 18, 2020.
Prior Publication US 2023/0372864 A1, Nov. 23, 2023
Int. Cl. B01D 53/18 (2006.01); B01D 53/14 (2006.01); F01N 3/08 (2006.01); F02G 5/02 (2006.01)
CPC B01D 53/1475 (2013.01) [B01D 53/1425 (2013.01); F01N 3/0857 (2013.01); F01N 2560/021 (2013.01); F01N 2590/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for reducing greenhouse gas emission in a vessel, the apparatus comprising:
a seawater supply unit that supplies seawater;
an absorbent liquid producing unit that produces and supplies a high-concentration CO2 absorbent liquid;
an absorption tower comprising a CO2 removing unit that cools exhaust gas discharged from a vessel engine by reacting the exhaust gas with the seawater supplied from the seawater supply unit, and removes CO2 by reacting the cooled exhaust gas with the absorbent liquid supplied from the absorbent liquid producing unit to convert CO2 into an aqueous ammonium salt solution;
an absorbent liquid recycling unit that recycles the absorbent liquid and NH3 by reacting the aqueous ammonium salt solution discharged from the absorption tower with an aqueous divalent metal hydroxide solution and circulates and supplies the absorbent liquid and the NH3 to the absorption tower for reuse as the absorbent liquid; and
an absorbent liquid circulating unit that circulates the aqueous ammonium salt solution or a part of an unreacted absorbent liquid discharged from a lower end of the absorption tower through an absorbent liquid circulation line to an upper end of the absorption tower.