Laminar scrubber apparatus for capturing carbon dioxide from air and methods of use

• US 7,833,328 B2
• Filed: 09/09/2009
• Issued: 11/16/2010
• Est. Priority Date: 08/20/2004
• Status: Expired due to Fees

• Current Assignee: Kilimanjaro Energy, Inc.
• Original Assignee: Trustees Of Columbia University In The City Of New York (Columbia University), Kilimanjaro Energy, Inc.
• Inventors: Lackner, Klaus S., Wright, Allen
• Primary Examiner(s): Smith; Duane
• Assistant Examiner(s): WU, IVES J
• Application Number:
  US12/555,874
• Publication Number:
  US 20090320688A1
• Time in Patent Office: 433 Days
• Field of Search: 95210-213, 952/36, 952/57, 952/18, 962/90, 962/96, 96281-289, 261/114.5
• US Class Current: 96/281
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/18 Absorbing units; Liquid distributors therefor B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32
• CPC Class Codes: B01D 53/62 Carbon oxides
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

The present invention is directed to methods for carbon dioxide from air, which comprises exposing solvent covered surfaces to air streams where the airflow is kept laminar, or close to the laminar regime. The invention also provides for an apparatus, which is a laminar scrubber, comprising solvent covered surfaces situated such that they can be exposed to air streams such that the airflow is kept laminar.

Claims

1. A scrubber apparatus for capturing carbon dioxide from open air, comprising:

substantially horizontal concentric tubes each including first and second ends and surfaces therebetween and including a center tube axis, wherein said first and second ends are not closed so as to allow a flow of open air to pass through the tubes and directly contact the surfaces;

A mechanism for continuously rotating each tube around its center tube axis;

A pump in fluid communication with a source of carbon dioxide solvent;

A conduit in fluid communication with the pump for introducing the solvent to the surface of the tubes via one of the first and second ends; and

A catch tray for collecting the solvent flowing from one of the first and second ends.

2. An apparatus according to claim 1, further comprising airflow guides for directing the air flow so that it is substantially parallel to the center axis of the tubes.

3. An apparatus according to claim 2, wherein the airflow guides are configured so as to cause the air to flow substantially horizontally through the tubes.

4. An apparatus according to claim 1, wherein the solvent is adapted to remove carbon dioxide from open air under ambient conditions.

5. An apparatus according to claim 4, wherein the solvent is a hydroxide solution having a hydroxide concentration of from about 0.1 molar to about 20 molar.

6. An apparatus according to claim 1, wherein the conduit and the pump are configured to recycle solvent from the catch tray to one of the first and second ends of the tubes.

7. An apparatus according to claim 1, wherein the surfaces include one or more of grooves, dimples, bumps, and other surface structures that are configured so that air flowing through the tubes remains within the laminar boundary of air flow.