Electrochemical reactor and process

Inventor: Wayne Buschmann (Boulder, CO)

Assignee: Clean Chemistry, Inc.

C25B9/08 C01B7/01 C01B11/06 C01B11/062 C01B15/01 C01D1/04 C25B1/00 C25B1/14 C25B1/24 C25B1/26 C25B1/265 C25B1/30 C25B1/34 C25B9/00 C25B15/02 C25B15/08

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Quick Facts

Patent No.: US 9,551,076
App. No.: 14/122,185
Filed: Nov 25, 2013
Granted: Jan 24, 2017
Kind: B2
Examiner: CONTRERAS, CIEL P
Art Unit: 1754
USPC: 204/265

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Abstract

The electrochemical reactors disclosed herein provide novel oxidation and reduction chemistries and employ increased mass transport rates of materials to and from the surfaces of electrodes therein.

Claims (65)

1. A tubular electrochemical reactor, comprising: a tubular gas chamber, a tubular gas dispersion tube, a cathode flow channel, a tubular cathode, a tubular separator, a tubular anode, a tubular anolyte chamber, a tubular anolyte chamber housing, a first and a second toroidal seat plate which form a first and a second end respectively of said tubular anolyte chamber, a first end plate, a second end plate, a first toroidal cathode current distributor and compression ferrule, a second toroidal cathode current distributor and compression ferrule, and

wherein said tubular gas chamber resides within and is defined by the interior surface of said tubular gas dispersion tube, and

wherein the exterior surface of said tubular gas dispersion tube forms the interior side of said cathode flow channel, and

wherein the interior surface of said tubular separator forms the exterior side of said cathode flow channel, and

wherein said tubular cathode resides within said cathode flow channel, and

wherein the exterior surface of said tubular separator forms the interior side of said tubular anolyte chamber, and

wherein the exterior side of said tubular anolyte chamber is formed by the interior surface of said tubular anolyte chamber housing, and

wherein said tubular anode resides within said tubular anolyte chamber,

wherein a second side of said first toroidal seat plate forms said first end of said tubular anolyte chamber by bridging a first end of said interior surface of said tubular anolyte chamber housing at an exterior portion of said first toroidal seat plate and a first end of said exterior surface of said tubular separator at an interior portion of said first toroidal seat plate, and

wherein a first side of said second toroidal seat plate forms said second end of said tubular anolyte chamber by bridging a second end of said interior surface of said tubular anolyte chamber housing at an exterior portion of said second toroidal seat plate and a second end of said exterior surface of said tubular separator at an interior portion of said second toroidal seat plate, and

wherein a second side of said first toroidal cathode current distributor and compression ferrule contacts a first end of said tubular cathode, and

wherein said second side of said first toroidal cathode current distributor and compression ferrule bridges a first end of said tubular separator and a interior surface of said first toroidal seat plate, and

wherein a first side of said second toroidal cathode current distributor and compression ferrule contacts a second end of said tubular cathode, and

wherein said first side of said second toroidal cathode current distributor and compression ferrule bridges a second end of said tubular separator and a interior surface of said second toroidal seat plate, and

wherein a second side of said first end plate forms a first end of said tubular gas chamber, and

wherein said second side of said first end plate forms a first end of said tubular gas dispersion tube, and

wherein said second side of said first end plate compresses said first toroidal cathode current distributor and compression ferrule between said second side of said first end plate and said first side of said first toroidal seat plate, and

wherein a first side of said second end plate forms a second end of said tubular gas chamber, and

wherein said first side of said second end plate forms a second end of said tubular gas dispersion tube, and

wherein said first side of said second end plate compresses said second toroidal cathode current distributor and compression ferrule between said first side of said second end plate and a second side of said second toroidal seat plate.

2. The tubular electrochemical reactor of claim 1 further comprising at least one cathode electrical feed through post in said first and said second end plate, at least one catholyte inlet/outlet port in said first and said second end plate, at least one gas inlet/outlet port in said first and said second end plate, at least one anolyte inlet/outlet port in said tubular anolyte chamber housing, at least one anode electrical feed through post that passes through said tubular anolyte chamber housing and makes contact with said tubular anode at at least one anode current collector tab.

3. The tubular electrochemical reactor of claim 2 wherein a second end of said at least one cathode electrical feed through post contacts said first toroidal cathode current distributor and compression ferrule, and

wherein a first end of said at least one cathode electrical feed through post protrudes from a first side of said first end plate, and

wherein said first end of said at least one cathode electrical feed through post contacts said second toroidal cathode current distributor and compression ferrule, and

wherein a second end of said at least one cathode electrical feed through post protrudes from a second side of said second end plate.

4. The tubular electrochemical reactor of claim 3 wherein the at least one catholyte inlet/outlet port in said first and said second end plate forms a channel with said cathode flow channel, and

wherein the at least one gas inlet/outlet port in said first and said second end late forms a channel with said tubular gas chamber, and

wherein the at least one anolyte inlet/outlet port in said tubular anolyte chamber housing forms a channel with said tubular anolyte chamber.

5. The tubular electrochemical reactor of claim 4 wherein said tubular separator is selectively permeable to cations.

6. The tubular electrochemical reactor of claim 4 wherein said tubular separator is selectively permeable to anions.

7. The tubular electrochemical reactor of claim 4 wherein said tubular cathode comprises a thickness that is between 0.1 and 10 millimeters, between 0.5 and 5 millimeters, or between 1 and 3 millimeters.

8. The tubular electrochemical reactor of claim 4 wherein said tubular cathode exhibits electroactivity over greater than 50% of its specific surface area, and

wherein said tubular cathode comprises a specific surface area greater than 1 m 2 per 1 m 2 superficial area, a specific surface area greater than 5 m 2 per 1 m 2 superficial area, a specific surface area greater than 10 m 2 per 1 m 2 superficial area, or a specific surface area greater than 100 m 2 per 1 m 2 superficial area.

9. A tubular electrochemical reactor, comprising: a tubular gas chamber, a tubular gas dispersion tube, a cathode flow channel, a tubular cathode, a tubular separator, a tubular anode, a tubular anolyte chamber, a tubular anolyte chamber housing, a first and a second toroidal seat plate which form a first and a second end respectively of said tubular anolyte chamber, a first end plate, a second end plate, a first toroidal cathode current distributor and compression ferrule, a second toroidal cathode current distributor and compression ferrule, at least one cathode electrical feed through post in said first and said second end plate, at least one catholyte inlet/outlet port in said first and said second end plate, at least one gas inlet/outlet port in said first and said second end plate, at least one anolyte inlet/outlet port in said tubular anolyte chamber housing, at least one anode electrical feed through post that passes through said tubular anolyte chamber housing and makes contact with said tubular anode, and