Rotary type capacitive deionization apparatus

Patent metadata

Field	Value
Publication number	US-11891315-B2
Application number	US-202117531774-A
Country	US
Kind code	B2
Filing date	Nov 21, 2021
Priority date	Apr 30, 2021
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A capacitive adsorption module assembly is proposed. The capacitive adsorption module assembly includes a plurality of capacitive adsorption modules, each having a disk-shaped spacer configured to form a flow path through which feed flows, a cation exchange membrane attached to any one of an upper surface and a lower surface of the spacer, a first electrode attached to the cation exchange membrane, an anion exchange membrane attached to the other of the upper surface and the lower surface of the spacer, and a second electrode attached to the anion exchange membrane, wherein the capacitive adsorption modules are vertically stacked such that adjacent capacitive adsorption modules share or contact the first electrode or the second electrode, and at least one first terminal and second terminal passing through the stacked modules being provided.

First claim

What is claimed is:

1. A capacitive adsorption module assembly comprising:
a plurality of capacitive adsorption modules:
wherein each of the plurality of capacitive adsorption modules comprises:
a disk-shaped spacer configured to form a flow path through which feed flows;
a cation exchange membrane attached to any one of an upper surface and a lower surface of the spacer;
a first electrode attached to the cation exchange membrane;
an anion exchange membrane attached to the other of the upper surface and the lower surface of the spacer; and
a second electrode attached to the anion exchange membrane,
wherein the capacitive adsorption modules are vertically stacked such that adjacent capacitive adsorption modules share or contact the first electrode or the second electrode, and
wherein at least one first terminal and second terminal passing through the stacked capacitive adsorption modules are provided,
wherein the spacer includes a pair of frames spaced apart by a predetermined distance to face each other, and
wherein a space between the pair of frames forms a flow path through which the feed flows,
wherein each frame includes a circumferential frame part formed in a circumferential direction and a radial frame part formed in a radial direction to connect the circumferential frame part.

2. The capacitive adsorption module assembly according to claim 1 , wherein the first terminal is electrically connected to the first electrode of an odd-numbered capacitive adsorption module, and the second terminal is electrically connected to the second electrode of an even-numbered capacitive adsorption module.

3. The capacitive adsorption module assembly according to claim 1 , wherein each radial frame part of the pair of frames is disposed so as not to overlap or face each other.

4. The capacitive adsorption module assembly according to claim 1 , wherein each radial frame part of the pair of frames forms a curve having curvature in opposite directions.

5. The capacitive adsorption module assembly according to claim 2 , wherein the first terminal is embedded in the odd-numbered capacitive adsorption module and coupled to a first nut electrically connected to the first electrode and the second terminal is embedded in the even-numbered capacitive adsorption module and coupled to a second nut electrically connected to the second electrode.

6. The capacitive adsorption module assembly according to claim 5 , wherein the stacked capacitive adsorption modules are fixed by the coupling between the first terminal and the first nut and the coupling between the second terminal and the second nut.

7. The capacitive adsorption module assembly according to claim 5 , wherein the first terminal is fixed with an insulator for the even-numbered electro-adsorption module, and the second terminal is fixed with an insulator for the odd-numbered electro-adsorption module.

8. The capacitive adsorption module assembly according to claim 2 , further comprising a rotary shaft inserted through the stacked capacitive absorption modules,
wherein a first adapter is provided on one side of the rotary shaft to fix and electrically connect the first terminal of a first odd-numbered capacitive absorption module, and
a second adapter is provided on the other side of the rotary shaft to fix and electrically connect the second terminal of a last even-numbered capacitive absorption module.

9. A capacitive deionization apparatus comprising:
a capacitive adsorption module assembly comprising a plurality of capacitive adsorption modules, each of the plurality of capacitive adsorption modules comprising:
a disk-shaped spacer configured to form a flow path through which feed flows;
a cation exchange membrane attached to any one of an upper surface and a lower surface of the spacer;
a first electrode attached to the cation exchange membrane;
an anion exchange membrane attached to the other of the upper surface and the lower surface of the spacer;
a second electrode attached to the anion exchange membrane; and
a rotary shaft inserted through the stacked capacitive absorption modules,
wherein the capacitive adsorption modules are vertically stacked such that adjacent capacitive adsorption modules share or contact the first electrode or the second electrode, and
wherein at least one first terminal and second terminal passing through the stacked capacitive adsorption modules are provided, and wherein the first terminal is electrically connected to the first electrode of an odd-numbered capacitive adsorption module, and the second terminal is electrically connected to the second electrode of an even-numbered capacitive adsorption module,
a casing hermetically accommodating the capacitive absorption module assembly and having a feed passage;
a power source configured to supply DC power to both ends of the rotary shaft protruding to an outside of the casing; and
a rotary driving unit configured to drive the rotary shaft.

10. The capacitive deionization apparatus according to claim 9 , wherein a first adapter is provided on one side of the rotary shaft to fix and electrically connect the first terminal of a first odd-numbered capacitive absorption module, and a second adapter is provided on the other side of the rotary shaft to fix and electrically connect the second terminal of a last even-numbered capacitive absorption module.

11. The capacitive deionization apparatus according to claim 9 , wherein the power source supplies DC power to the rotary shaft via a slip ring.

12. The capacitive deionization apparatus according to claim 9 , wherein the power source supplies power to the capacitive adsorption module assembly such that (—) power is applied to one side of the rotary shaft on which the first adapter is mounted, and (+) power is applied to one side of the rotary shaft on which the second adapter is mounted so that the capacitive absorption module assembly is operated in a charging mode.

13. The capacitive deionization apparatus according to claim 11 , wherein the power source supplies power to the capacitive adsorption module assembly such that (—) power is applied to one side of the rotary shaft on which the first adapter is mounted, and (+) power is applied to one side of the rotary shaft on which the second adapter is mounted so that the capacitive absorption module assembly is operated in a charging mode.

14. The capacitive deionization apparatus according to claim 9 , wherein the power source supplies power to the capacitive adsorption module assembly such that (+) power is applied to one side of the rotary shaft on which the first adapter is mounted, and (—) power is applied to one side of the rotary shaft on which the second adapter is mounted is applied so that the capacitive absorption module assembly is operated in a discharging mode.

15. The capacitive deionization apparatus according to claim 11 , wherein the power source supplies power to the capacitive adsorption module assembly such that (+) power is applied to one side of the rotary shaft on which the first adapter is mounted, and (—) power is applied to one side of the rotary shaft on which the second adapter is mounted is applied so that the capacitive absorption module assembly is operated in a discharging mode.

16. A capacitive adsorption module assembly comprising:
a plurality of capacitive adsorption modules:
wherein each of the plurality of capacitive adsorption modules comprises:
a disk-shaped spacer configured to form a flow path through which feed flows;
a cation exchange membrane attached to any one of an upper surface and a lower surface of the spac

Assignees

• Doosan Enerbility Co Ltd

Inventors

• Kang Wee Kwan
• Jo Ho Yong
• You Jang Yong

Classifications

• C02F1/4691 Primary

  Capacitive deionisation · CPC title

• C02F1/46109

  Electrodes · CPC title

• C02F2001/46123

  Movable electrodes · CPC title

• C02F2001/46133

  characterised by the material · CPC title

• C02F2001/46152

  characterised by the shape or form · CPC title