Regenerable sorbent CO2 scrubber for submarine vessels

A submarine CO2 scrubbing system, comprising:

• an assembly including a sorbent, the assembly configured to operate in at least two modes of operation including an adsorption mode and a regeneration mode;
• a scrubbing inlet in communication with the assembly and configured to receive a first airflow during the adsorption mode,
• wherein:
• the first airflow comprising air received from a cabin of a submarine either directly or via one or more ducts,
• during the adsorption mode, the assembly is configured to flow the first airflow over and/or through the sorbent so as to remove at least a portion of CO2 entrained in the first airflow;
• a scrubbing outlet in communication with the assembly and configured to expel the scrubbed first airflow from the assembly into the cabin either directly or via one or more ducts during the adsorption mode;
• an outside air inlet in communication with outside air and the assembly;
• a regeneration air outlet in communication with at least the assembly,
• wherein during the regeneration mode:
• the outside air inlet is configured to receive a second airflow comprising outside air,
• the assembly directs the second airflow over and/or through the sorbent to release CO2 so as to regenerate the sorbent,
• the regeneration air outlet is configured to expel the second airflow after the second airflow has flowed over and/or through the sorbent, and
• at least one of the outside air inlet and regeneration air outlet is configured to seal upon termination of the regeneration mode;
• heating means configured to heat at least one of the sorbent and the second airflow during the regeneration mode;
• and
• a controller configured to operate the system in:
• the absorption mode upon the submarine being submerged, and
• the regeneration mode upon the submarine surfacing, such that at least one of the sorbent and the second airflow is heated by the heating means and the second airflow receives CO2 from the adsorbent.