Patent ID: 8500855

Claim:
A method of removing and concentrating carbon dioxide from carbon dioxide laden air, the method comprising mixing ambient air with a minor proportion of a carbon dioxide-containing effluent gas, directing a flow of carbon dioxide-laden air through a carbon dioxide capture structure comprising a sorbent capable of adsorbing, or releasably binding, carbon dioxide to remove carbon dioxide from the air, the sorbent being held on the surfaces of a porous solid mass, so that the carbon dioxide is adsorbed, or bound, to the sorbent on the surfaces of the solid mass, directing process heat at the carbon dioxide-containing capture structure to separate carbon dioxide from the sorbent as a more concentrated form of CO2, and to regenerate the sorbent; directing another flow of carbon dioxide-laden air through the regenerated carbon dioxide capture structure so that the regenerated sorbent can adsorb or bind additional carbon dioxide, to remove the additional carbon dioxide from the flow of additional carbon dioxide laden air, wherein the flow of carbon dioxide-laden air is directed through a removal chamber and the process heat is directed at the carbon dioxide-containing capture structure in a regeneration chamber; and the method further comprising alternatively moving the carbon dioxide-containing capture structure between the removal chamber and the regeneration chamber.