Device, system, and method for passive collection of atmospheric carbon dioxide

Patent metadata

Field	Value
Publication number	US-2025058266-A1
Application number	US-202418815777-A
Country	US
Kind code	A1
Filing date	Aug 26, 2024
Priority date	Oct 29, 2018
Publication date	Feb 20, 2025
Grant date	—

Abstract

A device for passive collection of atmospheric carbon dioxide is disclosed. The device includes a release chamber having an opening and a sorbent regeneration system. The device also includes a capture structure coupled to the release chamber, having at least one collapsible support and a plurality of tiles spaced along the collapsible support. Each tile has a sorbent material. The capture structure is movable between a collection configuration and a release configuration. The collection configuration includes the capture structure extending upward from the release chamber to expose the capture structure to an airflow and allow the sorbent material to capture atmospheric carbon dioxide. The release configuration includes the collapsible support being collapsed and the plurality of tiles being sufficiently enclosed inside the release chamber that the sorbent regeneration system may operate on the plurality of tiles to release captured carbon dioxide from the sorbent material and form an enriched gas.

First claim

1 .- 24 . (canceled)

25 . A device for passive collection of atmospheric carbon dioxide, comprising:
a capture structure comprising at least one collapsible support and a plurality of tiles, each tile comprising a sorbent material; a release chamber configured to receive the capture structure, the release chamber having a lid configured to cover an opening in the release chamber when the capture structure is in the release chamber; a sorbent regeneration system in fluid communication with the inside of the release chamber; a product outlet in fluid communication with the inside of the release chamber and configured to receive a product stream of enriched gas; and an actuator configured to move the capture structure between a collection configuration and a release configuration, wherein when the capture structure is in the collection configuration, the capture structure extends into an airflow to allow the sorbent material of the plurality of tiles to capture atmospheric carbon dioxide, and wherein when the capture structure is in the release configuration, the capture structure is enclosed in the release chamber such that the sorbent regeneration system may operate on the plurality of tiles to release captured carbon dioxide from the sorbent material and form an enriched gas within the release chamber.

26 . The device of claim 25 , wherein the sorbent material is a moisture swing sorbent material, the sorbent regeneration system comprises a release medium, and a release medium emitter, and wherein the release medium is one of liquid water and steam.

27 . The device of claim 25 , wherein the sorbent material is a heat swing sorbent material and the sorbent regeneration system comprises a heat source.

28 . The device of claim 25 , wherein the release chamber further comprises a sweep gas inlet coupled to a sweep gas source and configured to introduce a sweep gas to the release chamber to displace the enriched gas.

29 . The device of claim 25 , wherein each tile of the plurality of tiles is substantially planar.

30 . The device of claim 29 , wherein, for each tile of the plurality of tiles, the sorbent material comprises a plurality of sorbent surfaces coupled to a surface of the tile at an angle greater than zero.

31 . The device of claim 25 , wherein each tile of the plurality of tiles comprises an aperture.

32 . The device of claim 25 , wherein each tile of the plurality of tiles comprises an upper frame and a lower frame, with the sorbent material sandwiched between the upper frame and lower frame.

33 . The device of claim 25 , further comprising:
at least one sensor communicatively coupled to a control system; wherein the control system is configured to determine at least one ambient condition based on signals received from the at least one sensor, and autonomously drive the actuator to move the capture structure between the collection configuration and the release configuration based upon the at least one ambient condition; wherein the at least one ambient condition comprises at least one of a temperature, a humidity, and a wind speed.

34 . The device of claim 25 , further comprising at least one baffle.

35 . The device of claim 25 , further comprising a control system communicatively coupled to the actuator and configured to drive the actuator to move the capture structure between the collection configuration and the release configuration.

36 . A method for passive collection of atmospheric carbon dioxide, comprising:
exposing a capture structure to an airflow, the capture structure comprising at least one collapsible support and a plurality of tiles coupled to and spaced along the at least one collapsible support, each tile comprising a sorbent material; collapsing the at least one collapsible support into a release chamber such that the at least one collapsible support and the plurality of tiles are entirely inside the release chamber; closing a release chamber lid to confine the plurality of tiles inside the release chamber; regenerating the sorbent material of the plurality of tiles by operating on the sorbent material with a sorbent regeneration system to release the captured carbon dioxide, forming an enriched gas within the release chamber; and emitting a product stream of enriched gas through a product outlet in fluid communication with the inside of the release chamber by displacing the enriched gas with a sweep gas introduced to the release chamber.

37 . The method of claim 36 , wherein the sorbent material is a moisture swing sorbent material, the sorbent regeneration system comprises a release medium, and a release medium emitter, and wherein the release medium is one of liquid water and steam.

38 . The method of claim 36 , wherein the sorbent material is a heat swing sorbent material and the sorbent regeneration system comprises a heat source, and wherein the heat source is a release medium emitter configured to release steam.

39 . The method of claim 36 , further comprising:
determining at least one ambient condition local to the passive collection device based on a signal received from at least one sensor communicatively coupled to a control system; and determining an optimal exposure time for the capture structure based on the at least one ambient condition.

40 . The method of claim 36 , wherein the sweep gas is one of air, nitrogen, water vapor, and steam.

41 . A system for passive collection of atmospheric carbon dioxide, comprising:
at least one passive collection cluster, each passive collection cluster comprising at least two passive collection devices, each passive collection device comprising:
a release chamber comprising an opening and a sorbent regeneration system;
a capture structure coupled to the release chamber and comprising at least one collapsible support and a plurality of tiles coupled to and spaced along the at least one collapsible support, each tile comprising a sorbent material, and the capture structure being movable between a collection configuration and a release configuration;
a lid covering the opening of the release chamber when the capture structure is in the release configuration;
an actuator coupled to the capture structure; and
a control system communicatively coupled to each passive collection cluster and configured to drive the actuator to move the capture structure of at least one passive collection device between the collection configuration and the release configuration; wherein, for each passive collection device, the collection configuration comprises the capture structure extending upward from the release chamber to expose at least a portion of the capture structure to an airflow and allow the sorbent material of the plurality of tiles to capture atmospheric carbon dioxide; wherein, for each passive collection device, the release configuration comprises the at least one collapsible support of the capture structure being collapsed, the lid covering the opening of the release chamber, and the plurality of tiles being sufficiently enclosed inside the release chamber that the sorbent regeneration system may operate on the plurality of tiles to release captured carbon dioxide from the sorbent material and form an enriched gas within the release chamber.

42 . The system of claim 41 , wherein the release chamber of each passive collection device in the same cluster is in fluid communication, such that the enriched gas of one collection device may be swept through the release chamber of a neighboring collection device.

Assignees

• Univ Arizona State

Inventors

• Lackner Klaus
• Kedia Shreyans
• Choodamani Venkatram
• Page Robert

Classifications

• B01D2259/4009

  using hot gas · CPC title

• B01D2257/504

  Carbon dioxide · CPC title

• B01D2253/34

  Specific shapes · CPC title

• B01D53/0454

  Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047) · CPC title

• B01D2258/06

  Polluted air · CPC title