US 12,030,013 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 Oct. 22, 2021, as Appl. No. 17/451,936.
Prior Publication US 2023/0130504 A1, Apr. 27, 2023
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)] 29 Claims
OG exemplary drawing
 
1. An exhaust gas carbon dioxide capture and recovery system for an internal combustion engine, the system comprising:
an exhaust absorber system configured to extract at least a portion of carbon dioxide from a first exhaust feed using a lean solvent stream comprising a solvent selective for absorbing carbon dioxide and to produce a first exhaust product having a reduced amount of carbon dioxide and a rich solvent stream comprising solvent and absorbed carbon dioxide;
a solvent regenerator configured to convert the rich solvent stream into the lean solvent stream and a crude carbon dioxide vapor using at least two heat sources, where the solvent regenerator is coupled to the exhaust absorber system using a system solvent loop such that the solvent regenerator is downstream of the exhaust absorber system for receiving the rich solvent stream and upstream of the exhaust absorber system for providing the lean solvent stream, wherein the solvent regenerator operates at a temperature of above 100° C., and where the at least two heat sources comprise two or more of the following: (1) an engine exhaust going to a tailpipe of the internal combustion engine; (2) an engine exhaust being recirculated to the internal combustion engine; (3) an engine coolant; or (4) an engine lubrication oil;
a carbon dioxide compressor configured to convert the crude carbon dioxide vapor into a concentrated pressurized carbon dioxide product, where the carbon dioxide compressor is coupled downstream of the solvent regenerator along a carbon dioxide gas flow path;
a carbon dioxide storage tank configured to both receive and store the concentrated pressurized carbon dioxide product, where the carbon dioxide storage tank is coupled downstream of the carbon dioxide compressor along the carbon dioxide gas flow path;
where the system is mounted on a mobile vehicle or vessel or receives exhaust gas from an internal combustion engine.