Rotary contactor for vehicle carbon dioxide capture

A method for capturing carbon dioxide (CO2) in exhaust gas of a vehicle, the method including:

• locating a rotary contactor onboard the vehicle;
• delivering a stream of the exhaust gas of the vehicle to a cooled section of a rotary contactor, the rotary contactor including openings that extend from a first side of the rotary contactor to a second side of the rotary contactor opposite the first side;
• adsorbing the CO2 of the exhaust gas with a sorbent of the cooled section of the rotary contactor;
• rotating the rotary contactor so that the cooled section of the rotary contactor is in a path of a hot fluid of the vehicle and heating the cooled section of the rotary contactor to release the adsorbed CO2 as a released CO2 stream, converting the cooled section of the rotary contactor to a heated section of the rotary contactor;
• directing a mixture of the released CO2 stream and the exhaust gas towards the stream of the exhaust gas with a purge sector;
• and
• rotating the rotary contactor so that the heated section of the rotary contactor is in a path of the exhaust gas and cooling the heated section of the rotary contactor with the exhaust gas to convert the heated section of the rotary contactor back to the cooled section of the rotary contactor;
• where
• the exhaust gas passes through an energy recovery device, the energy recovery device generating energy for compressing the released CO2;
• and
• the rotary contactor and the energy recovery device are located onboard the vehicle.

A system for capturing carbon dioxide (CO2) in exhaust gas of a vehicle, the system including:

• a rotary contactor located onboard the vehicle, the rotary contactor having a cooled section operable to receive delivery of a stream of the exhaust gas of the vehicle, the rotary contactor including openings that extend from a first side of the rotary contactor to a second side of the rotary contactor opposite the first side;
• a sorbent located on the cooled section of the rotary contactor operable to adsorb the CO2 of the exhaust gas;
• and
• a hot fluid directed at the cooled section of the rotary contactor operable to release the adsorbed CO2 as a released CO2 stream and convert the cooled section of the rotary contactor to a heated section of the rotary contactor;
• a purge sector operable to direct a mixture of the released CO2 stream and the exhaust gas towards the stream of the exhaust gas;
• where
• the rotary contactor is rotatable so that the heated section of the rotary contactor is cooled to convert the heated section of the rotary contactor back to the cooled section of the rotary contactor.