Liquid drum type fuel cell-metal recovery apparatus

Patent metadata

Field	Value
Publication number	US-9577277-B2
Application number	US-201414451543-A
Country	US
Kind code	B2
Filing date	Aug 5, 2014
Priority date	Aug 8, 2013
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

Disclosed herein is a liquid drum type fuel cell-metal recovery apparatus, which can produce power through electrochemical oxidation of coal by continuously receiving coal/metal oxide mixed particles.

First claim

What is claimed is:

1. A metal-reductive direct carbon fuel cell comprising:
(a) a housing;
(b) at least one fuel inlet through which a mixture of a fuel and a metal oxide is injected into the housing;
(c) at least one unit cell which has a cylindrical shape having an elongated hole formed therein in an axial direction and is rotatably disposed within the housing;
(d) at least one gas inlet through which an oxygen-containing gas is injected into the hole from an outside of the housing;
(e) at least one gas outlet through which carbon dioxide generated in the housing is discharged;
(f) a liquid media filling at least a portion of an empty space within the housing; and
(g) at least one metal outlet through which a metal reduced from the injected metal oxide by the unit cell is discharged from the housing.

2. The direct carbon fuel cell according to claim 1 , wherein the unit cell comprises:
(c1) a fuel electrode formed on a surface thereof;
(c2) an air electrode formed on a surface of the hole formed in the axial direction;
(c3) a fuel electrode current collector contacting at least a portion of a surface of the fuel electrode; and
(c4) an air electrode current collector contacting at least a portion of a surface of the air electrode.

3. The direct carbon fuel cell according to claim 2 , wherein the fuel electrode current collector comprises at least one conductive metal wire contacting the surface of the fuel electrode.

4. The direct carbon fuel cell according to claim 3 , wherein the fuel electrode comprises yttria-stabilized zirconia (YSZ), and has a nanoscale thick TiO 2 or V 2 O 3 layer formed on the surface thereof.

5. The direct carbon fuel cell according to claim 4 , wherein the fuel electrode comprises a plurality of protrusions on the surface thereof.

6. The direct carbon fuel cell according to claim 1 , further comprising:
an outlet through which the liquid media is discharged from the housing; and
an inlet through which the liquid media is injected again into the housing.

7. The direct carbon fuel cell according to claim 1 , wherein the fuel comprises at least one solid fuel selected from among coal, coke, char and graphite; at least one liquid fuel selected from among gasoline, diesel, heavy oil and kerosene; or a mixture of the solid and liquid fuels.

8. The direct carbon fuel cell according to claim 7 , wherein the fuel is a solid fuel pulverized to a size from 0.1 μm to 5 μm.

9. The direct carbon fuel cell according to claim 1 , wherein the metal oxide comprises at least one selected from among Ag 2 O, HgO, PdO, Cu 2 O, Fe 2 O 3 , NiO, and CoO.

10. The direct carbon fuel cell according to claim 1 , wherein the liquid media is molten tin.

11. The direct carbon fuel cell according to claim 10 , wherein the liquid media further comprises at least one metal selected from among Sb, Pb, and Bi.

12. The direct carbon fuel cell according to claim 1 , wherein the fuel electrode is yttria-stabilized zirconia (YSZ), the liquid media is molten tin, and the metal-reductive direct carbon fuel cell is operated at 600° C. to 1,200° C.

13. The direct carbon fuel cell according to claim 2 , wherein the unit cell further comprises:
(c5) an external wire connecting the air electrode current collector to the fuel electrode current collector through a load.

Assignees

• Gwangju Inst Science & Tech

Inventors

• Lee Jaeyoung
• Ju Hyungkuk
• Lee Jae Kwang

Classifications

• H01M8/247

  Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks · CPC title

• H01M4/8626 Primary

  characterised by the form · CPC title

• H01M8/004

  Cylindrical, tubular or wound · CPC title

• H01M4/8657

  layered · CPC title

• H01M8/243

  Grouping of unit cells of tubular or cylindrical configuration · CPC title