Device and method for passive collection of atmospheric carbon dioxide with electro-swing materials

Patent metadata

Field	Value
Publication number	US-12569798-B2
Application number	US-202118254971-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	Nov 30, 2020
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A system, device, and method for passive collection of atmospheric carbon dioxide is disclosed. The device includes a release chamber having a sorbent regeneration system with a power supply, and a capture structure coupled to the release chamber, having a plurality of disks coupled to and spaced along at least one collapsible support. Each disk has an electro-swing sorbent material. The capture structure is movable between collection and release configurations. The collection configuration includes the capture structure extending upward to expose the structure to an airflow and allow the sorbent to capture atmospheric carbon dioxide while a collection voltage is established across the sorbent material. The release configuration includes the disks enclosed inside the release chamber and conductively coupled to the power supply such that a release voltage is established across the electro-swing sorbent material, resulting in the release of captured carbon dioxide forming an enriched gas.

First claim

What is claimed is:

1 . A device for passive collection of atmospheric carbon dioxide, comprising:
a release chamber comprising an opening, a sorbent regeneration system having a power supply, and a product outlet; a capture structure coupled to the release chamber and comprising at least one collapsible support and a plurality of disks coupled to and spaced along the at least one collapsible support, each disk comprising an electro-swing 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; and wherein 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 disks to capture atmospheric carbon dioxide while, in each disk of the plurality of disks, a collection voltage is established across the electro-swing sorbent material; wherein 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 disks enclosed inside the release chamber and conductively coupled to the power supply of the sorbent regeneration system such that plurality of disks receive power and a release voltage is established across the electro-swing sorbent material of each disk, resulting in the release of captured carbon dioxide from the electro-swing sorbent material and the formation of an enriched gas within the release chamber.

2 . The device of claim 1 :
wherein each disk of the plurality of disks comprises at least one pair of electrical contacts on a top of the disk, and at least one pair of conductive posts on a bottom of the disk, each pair of electrical contacts communicatively coupled to the electro-swing sorbent material of the disk, each electrical contact communicatively coupled to a different conductive post and aligned such that when the capture structure is in the release configuration, the electrical contacts of a lower disk of a neighboring pair of disks is in direct conductive contact with the conductive posts of an upper disk of the neighboring pair; and wherein the sorbent regeneration system further comprises at least one pair of base electrical contacts beneath the plurality of disks, the at least one pair of base electrical contacts communicatively coupled to the power supply and positioned such that when the capture structure is in the release configuration, at least one pair of conductive posts of the plurality of disks is in direct conductive contact with at least one pair of base electrical contacts and the plurality of disks receives power from the power supply of the sorbent regeneration system.

3 . The device of claim 1 :
wherein each disk of the plurality of disks comprises at least two edge contacts communicatively coupled to the electro-swing sorbent material of that disk; wherein the release chamber further comprises at least one pair of power rails having opposite polarity, the power rails communicatively coupled with the sorbent regeneration system and positioned such that when the plurality of disks is in the release configuration, each disk of the plurality of disks is in contact with the at least one pair of power rails through the at least two edge contacts such that the electro-swing sorbent material is communicatively coupled with the power supply of the sorbent regeneration system through the at least one pair of power rails.

4 . The device of claim 3 , wherein the at least one pair of power rails is coupled to the release chamber through a plurality of biasing elements, such that the power rails are biased toward the plurality of disks when the capture structure is in the release configuration and maintain contact with the edge contacts of the plurality of disks.

5 . The device of claim 1 :
wherein each disk of the plurality of disks further comprises a battery and a voltage controller, the voltage controller communicatively coupled to the battery and the electro-swing sorbent material of the disk; and wherein each battery of the plurality of disks receives power from the power supply of the sorbent regeneration system at least while the capture structure is in the release configuration.

6 . The device of claim 1 , wherein the electro-swing sorbent material of the plurality of disks is conductively coupled to the power supply of the release chamber while the capture structure is moving between the collection and release configurations, and wherein the plurality of disks are conductively coupled to the power supply of the release chamber through the at least one collapsible support.

7 . The device of claim 1 :
wherein each disk of the plurality of disks comprises a first segment having a first radius as measured from a centroid of the disk and defined as the disk at a radius less than the first radius, and a second segment having a second radius as measured from the centroid and defined as the disk at a radius less than the second radius but greater than the first radius, the first segment being electrically isolated from the second segment; wherein the collection voltage is segmented, comprising a first segment voltage and a second segment voltage different from the first segment voltage; and wherein, for each disk in the plurality of disks, the collection voltage is established when the first segment voltage is established across the first segment at the same time the second segment voltage is established across the second segment, to manipulate the flow of carbon dioxide being sorbed into the electro-swing sorbent material while the capture structure is in the collection configuration.

8 . The device of claim 1 :
wherein each disk of the plurality of disks comprises a first segment having a first radius as measured from a centroid of the disk and defined as the disk at a radius less than the first radius, and a second segment having a second radius as measured from the centroid and defined as the disk at a radius less than the second radius but greater than the first radius, the first segment being electrically isolated from the second segment; wherein the release voltage is segmented, comprising a third segment voltage and a fourth segment voltage different from the third segment voltage; and wherein, for each disk in the plurality of disks, the release voltage is established when the third segment voltage is established across the first segment at the same time the fourth segment voltage is established across the second segment, to manipulate the flow of carbon dioxide being released by the electro-swing sorbent material while the capture structure is in the release configuration.

9 . The device of claim 1 , wherein the sorbent regeneration system comprises a heat source.

10 . The device of claim 9 , wherein the heat source is a steam source.

11 . The device of claim 1 :
wherein each disk of the plurality of disks is substantially planar; and wherein, for each disk of the plurality of disks, the electro-swing sorbent material comprises a plurality of sorbent surfaces coupled to a surface of the disk at an angle greater than zero.

12 . The device of claim 1 , wherein each disk of the plurality of disks comprises an aperture.

13 . A method for passive collection of atmospheric carbon dioxide, comprising:
preparing a passive collection device, comprising a release chamber and a capture structure, to collect atmospheric carbon dioxide by movi

Assignees

• Univ Arizona State

Inventors

• Lackner Klaus
• Page Robert

Classifications

• B01D2259/4009

  using hot gas · CPC title

• B01D2259/40086

  by using a purge gas (B01D2259/4009 takes precedence) · CPC title

• B01D2258/06

  Polluted air · CPC title

• B01D2257/504

  Carbon dioxide · CPC title

• B01D53/323

  by electrostatic effects or by high-voltage electric fields · CPC title