Deionizing device

Patent metadata

Field	Value
Publication number	US-2019337824-A1
Application number	US-201916511572-A
Country	US
Kind code	A1
Filing date	Jul 15, 2019
Priority date	Nov 21, 2013
Publication date	Nov 7, 2019
Grant date	—

Abstract

Provided is a deionization apparatus which includes: a porous electrode having fine pores; a non-pore ion exchange membrane that is formed in the porous electrode; a counter electrode that is spaced from the non-pore ion exchange membrane and faces the non-pore ion exchange membrane; and a spacer that is located between the porous electrode and the counter electrode, and that has a flow passage through which water to be treated passes.

First claim

What is claimed are:

1 . A deionization apparatus comprising:
a porous electrode including a porous substrate, wherein the porous substrate is formed of a non-woven fabric, a first porous nanofiber web having first pores and laminated on one surface of the non-woven fabric and a second porous nanofiber web having second pores and laminated on the other surface of the non-woven fabric, and the first porous nanofiber web and the second porous nanofiber web is formed of electrospun and accumulated nanofibers, the nanofibers being made of a polymer material; a non-pore ion exchange membrane formed on the second porous nanofiber web; a conductive film formed on the first porous nanofiber web, the conductive film being made of a conductive material, wherein the conductive material is coated on inner surfaces of the first pores; a counter electrode facing and spaced from the non-pore ion exchange membrane; a spacer located between the non-pore ion exchange membrane and the counter electrode, and having a flow passage through which water to be treated passes; and an insulating layer in contact with the counter electrode or the porous electrode, wherein a thickness of the first porous nanofiber web and the second porous nanofiber web is thinner than that of the non-woven fabric, and wherein the porous electrode, the non-pore ion exchange membrane, the spacer, the counter electrode, and the insulating layer are rolled into a spiral shape.

2 . The deionization apparatus of claim 1 , wherein the conductive film is formed by depositing the conductive material.

3 . The deionization apparatus of claim 1 , further comprising a coat layer coated on the conductive film.

4 . The deionization apparatus of claim 1 , wherein the counter electrode is a ground electrode.

5 . The deionization apparatus of claim 1 , wherein the counter electrode is a non-porous electrode.

6 . The deionization apparatus of claim 1 , wherein the spacer is a mesh or a nonwoven fabric.

7 . The deionization apparatus of claim 1 , wherein the polymer material includes a mixed polymer material of polyacrylonitrile (PAN) and polyvinylidene fluoride (PVDF), mixing ratio being in a range of 4:1 to 1:1 at a weight ratio.

8 . The deionization apparatus of claim 1 , wherein the non-pore ion exchange membrane is formed of an electrosprayed and accumulated ion exchange material.

9 . The deionization apparatus of claim 1 , wherein the first pores and the second pores have a diameter in a range of 1 nm to 100 μm, and the first porous nanofiber web and the second porous nanofiber web have a porosity in a range of 50% to 90%.

Assignees

• Amogreentech Co Ltd

Inventors

• Seo In Yong
• Hwang Jun Sik

Classifications

• B01D61/48

  having one or more compartments filled with ion-exchange material {, e.g. electrodeionisation} · CPC title

• C02F1/4695 Primary

  electrodeionisation · CPC title

• C02F1/46109

  Electrodes · CPC title

• C02F1/469 Primary

  by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis · CPC title

• B01D63/10

  Spiral-wound membrane modules · CPC title