Passive cocapture device with a helical sorbent structure

Abstract

A device for passive collection of atmospheric carbon dioxide is disclosed, including a vessel having an opening and a sorbent regeneration system. The device also includes a helical sorbent structure rotatably coupled to the vessel. The sorbent structure has a helical framework coupled to a sorbent material. The sorbent structure is movable between collection and release configurations. The collection configuration includes the sorbent structure extending upward from the vessel to expose the sorbent structure to an airflow and allow the sorbent material to capture atmospheric CO. The sorbent structure is free to rotate on an axis. The sorbent material is constrained to a helix rotating about and propagating along the axis. The release configuration includes a lid covering the opening, and the sorbent material being sufficiently enclosed inside the vessel that the regeneration system may operate to release captured COfrom the sorbent material and form an enriched gas.