System and method for resource-efficient carbon dioxide capture

A method for collecting a sorbate gas from a sorbent material, comprising:

• containing a sorbent structure inside a regeneration vessel, the sorbent structure comprising the sorbent material into which the sorbate gas has been sorbed;
• producing a water vapor by providing heat at a first temperature to a liquid water supply;
• reducing the total pressure of the regeneration vessel to below the pressure corresponding to the saturated vapor pressure of water at the first temperature;
• introducing the water vapor at the first temperature to the regeneration vessel, placing the water vapor in fluidic contact with the sorbent material and causing a portion of the sorbate gas to be released and form a vapor mixture comprising the sorbate gas and the water vapor, raising the total pressure within the regeneration vessel to greater than the triple point pressure of the sorbate;
• allowing the vapor mixture to leave the regeneration vessel by placing the vapor mixture in fluidic contact with a condenser that is communicatively coupled to the regeneration vessel and also communicatively coupled to the liquid water supply through a liquid pump, the condenser in thermal contact with a first heat pump that is also in thermal contact with the liquid water supply, the first heat pump being one of at least one heat pumps;
• removing heat from the vapor mixture at a second temperature that is lower than the first temperature using the first heat pump, causing a portion of the water vapor in the vapor mixture to condense into liquid water;
• providing the heat removed from the vapor mixture at the second temperature to the liquid water supply at the first temperature;
• returning the liquid water condensed from the vapor mixture to the liquid water supply using the liquid pump;
• and
• compressing a remainder of the vapor mixture with a first compressor communicatively coupled to the condenser, forming a first sorbate product gas.