Article for CO2 Capture Having Heat Exchange Capability

• US 20120272823A1
• Filed: 04/29/2011
• Published: 11/01/2012
• Est. Priority Date: 04/29/2011
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Halder, Amit, Jiang, Dayue David, Miao, Weiguo, Ogunwumi, Steven Bolaji, Song, Zhen
• Granted Patent: US 9,011,583 B2
• Time in Patent Office: Days
• US Class Current: 95/139
• CPC Class Codes: B01D 2253/108 Zeolites
• CPC Class Codes: B01D 2253/342 Monoliths
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2259/65 Employing advanced heat integration, e.g. Pinch technology
• CPC Class Codes: B01D 53/02 by adsorption, e.g. preparative gas chromatography solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01
• CPC Class Codes: B01D 53/0407 Constructional details of adsorbing systems
• CPC Class Codes: B01D 53/0462 Temperature swing adsorption
• CPC Class Codes: B01J 20/28045 Honeycomb or cellular structures; Solid foams or sponges
• CPC Class Codes: B01J 20/28097 being coated, filled or plugged with specific compounds
• CPC Class Codes: B01J 20/3483 by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

An article comprising a plurality of intersecting walls having outer surfaces that define a plurality of cells extending from one end to a second end, wherein the walls forming each cell in a first subset of cells are covered by a barrier layer to form a plurality of heat exchange flow channels, and wherein the walls forming each cell in a second subset of cells different from the first subset of cells, comprise a CO₂ sorbent and form reaction flow channels. Heat exchange flow channels allow quick and uniform heating and cooling of the sorbent body. The article may be useful, for example, for removing CO₂ from a gas stream.

Claims

1. An article for removing CO₂ from a gas stream, the article comprising:

a plurality of intersecting walls having outer surfaces that define a plurality of cells extending from one end to a second end,

wherein the walls forming each cell in a first subset of cells are covered by a barrier layer to form a plurality of heat exchange flow channels, and

wherein the walls forming each cell in a second subset of cells different from the first subset of cells, comprise a CO₂ sorbent material and form reaction flow channels.

2. The article of claim 1, wherein the intersecting walls have a porosity greater than 50 percent.

3. The article of claim 1, wherein the intersecting walls have a thickness of from 35 microns to 500 microns.

4. The article of claim 1 comprising a shaped body of sorbent material.

5. The article of claim 1, wherein the intersecting walls are impregnated with a solid sorbent.

6. The article of claim 5, wherein the amount of solid sorbent in the intersecting walls is greater than 150 grams per liter of intersecting wall.

7. The article of claim 5, wherein the solid sorbent impregnates the entire thickness of the intersecting wall.

8. The article of claim 5, wherein the solid sorbent impregnates the intersecting wall to a depth of at least 100 microns.

9. The article of claim 1, wherein the barrier layer has a minimum thickness of 10 microns.

10. The article of claim 1, wherein the barrier layer has a thickness from 10 microns to 100 microns.

11. The article of claim 1, wherein the barrier layer comprises polymer, glass, metal, ceramic, glass-ceramic, or combinations thereof.

12. The article of claim 1, wherein the article is in the form of a honeycomb.

13. The article of claim 1, wherein the intersecting walls comprises ceramic, glass, glass-ceramic, metal or combinations thereof.

14. The article of claim 1, having a void fraction less than 70 percent.

15. The article of claim 1, having a void fraction greater than 70 percent.

16. The article of claim 1, having a cell density of from 100 cells per square inch to 5000 cells per square inch.

17. The article of claim 1, wherein the reaction flow channels and heat exchange flow channels have different cross-sectional areas.

19. A method of removing CO₂ from a gas stream, the method comprising:

contacting a gas stream comprising CO₂ with the reaction flow channels of the article of claim 1 thereby adsorbing CO₂ on the article; and

flowing a cooling fluid through the heat exchange flow channels of the article;

wherein the cooling fluid acts to remove the heat resulting from the adsorption of the CO₂.

20. The method of claim 19, further comprising:

flowing a heating fluid through the heat exchange flow channels of the article of claim 1 to increase the temperature of the article thereby releasing the adsorbed CO₂.

18. A method of making an article for removing CO₂ from a gas stream, the method comprising:

providing a substrate comprising intersecting walls having outer surfaces that define a plurality of cells extending from one end to a second end;

wherein the intersecting walls have a median pore size greater than 10 microns;

wherein the porosity of the intersecting walls is greater than 50 percent;

impregnating the intersecting walls with a solid sorbent capable of adsorbing CO₂;

wherein the amount of solid sorbent in the intersecting walls is greater than 150 grams per liter of substrate;

masking the ends of selected cells of the substrate;

applying a barrier layer on the intersecting walls of the unmasked cells;

removing the mask, and

drying, and optionally firing, the article.