US 12,274,976 B2
Process for capturing CO2 from a mobile source using exhaust heat
Alexander Voice, Detroit, MI (US); Austin Wilks, Brighton, MI (US); and Esam Zaki Hamad, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on May 24, 2024, as Appl. No. 18/674,468.
Application 18/674,468 is a division of application No. 17/451,936, filed on Oct. 22, 2021, granted, now 12,030,013.
Prior Publication US 2024/0307815 A1, Sep. 19, 2024
Int. Cl. B01D 53/14 (2006.01); F01N 3/02 (2006.01); F01N 3/08 (2006.01); F02M 26/22 (2016.01)
CPC B01D 53/1425 (2013.01) [B01D 53/1412 (2013.01); B01D 53/1418 (2013.01); B01D 53/1475 (2013.01); B01D 53/1493 (2013.01); F01N 3/0205 (2013.01); F01N 3/0857 (2013.01); F01N 3/0878 (2013.01); F01N 3/0885 (2013.01); F02M 26/22 (2016.02); B01D 2257/504 (2013.01); F01N 2410/02 (2013.01); F01N 2410/12 (2013.01); F01N 2410/14 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A process for recovering carbon dioxide from exhaust from an internal combustion engine using an exhaust gas carbon dioxide capture and recovery system mounted on a mobile vehicle or vessel, the process comprises:
introducing a first exhaust feed into the system;
introducing a second exhaust feed into the system;
operating the system such that carbon dioxide is extracted from the first exhaust feed and absorbed into a lean system solvent using an exhaust absorber system, forming both a rich system solvent and a first exhaust product;
operating the system such that heat is transferred from the lean system solvent into the rich system solvent using a solvent-to-solvent heat exchanger;
operating the system such that heat is transferred from the first exhaust feed into the rich system solvent using an exhaust gas to rich solvent heat exchanger, forming a superheated rich system solvent;
operating the system such that heat is transferred from the second exhaust feed into a second lean system solvent using an exhaust gas to regenerator lean solvent heat exchanger;
operating the system such that carbon dioxide is desorbed from the second lean system solvent and the rich system solvent using a solvent regenerator, forming a crude carbon dioxide and the lean system solvent;
operating the system such that the crude carbon dioxide is compressed using a carbon dioxide compressor, forming a concentrated pressurized carbon dioxide product;
passing the concentrated pressurized carbon dioxide product into a carbon dioxide storage tank mounted on a mobile vehicle or vessel;
passing the first exhaust product from the system, where the first exhaust product has a reduced temperature and reduced carbon dioxide concentration as compared to the first exhaust feed; and
passing the second exhaust product from the system, where the second exhaust product has a reduced temperature as compared to the second exhaust feed.