Process for capturing CO2 from a mobile source using exhaust heat

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.