METHODS OF SEQUESTERING CO2

• US 20100132556A1
• Filed: 02/02/2010
• Published: 06/03/2010
• Est. Priority Date: 12/28/2007
• Status: Abandoned Application

• Current Assignee: Calera Corporation
• Original Assignee: Calera Corporation
• Inventors: Constantz, Brent R., Omelon, Sidney, Danziger, Robert, Way, J. Douglas, Farsad, Kasra, Tuet, Philip Brian, Youngs, Andrew, Decker, Valentin, Kirk, Donald W., Ryan, Cecily, Bard, Allen J., Fernandez, Miguel, Gilliam, Ryan J.
• Application Number:
  US12/698,802
• Publication Number:
  US 20100132556A1
• Time in Patent Office: Days
• US Class Current: 95/234
• CPC Class Codes: B01D 2251/402 of magnesium
• CPC Class Codes: B01D 2251/404 of calcium
• CPC Class Codes: B01D 2257/302 Sulfur oxides
• CPC Class Codes: B01D 2257/404 Nitrogen oxides other than dinitrogen oxide
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2257/602 Mercury or mercury compounds
• CPC Class Codes: B01D 53/1425 Regeneration of liquid absorbents
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/1493 Selection of liquid materials for use as absorbents
• CPC Class Codes: B01D 53/62 Carbon oxides
• CPC Class Codes: B01D 53/77 Liquid phase processes
• CPC Class Codes: C01B 32/60 Preparation of carbonates or bicarbonates in general of percarbonates C01B15/10; of specific carbonates or bicarbonates according to the cation C01B-C01G
• CPC Class Codes: C01F 11/18 Carbonates
• CPC Class Codes: C01F 5/24 Magnesium carbonates
• CPC Class Codes: C01P 2004/03 obtained by SEM
• CPC Class Codes: C02F 1/66 by neutralisation; pH adjustment for degassing C02F1/20; using ion-exchange C02F1/42; for flocculation or precipitation of suspended impurities C02F1/52; for removing dissolved compounds C02F1/58
• CPC Class Codes: C02F 1/683 by addition of complex-forming compounds
• CPC Class Codes: C04B 7/367 Avoiding or minimising carbon dioxide emissions
• CPC Class Codes: Y02C 20/40 of CO2
• CPC Class Codes: Y02E 60/36 Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
• CPC Class Codes: Y02P 20/133 : Renewable energy sources, e.g. sunlight
• CPC Class Codes: Y02P 20/151 : Reduction of greenhouse gas [GHG] emissions, e.g. CO2
• CPC Class Codes: Y02P 40/18 : Carbon capture and storage [CCS]
• CPC Class Codes: Y02W 10/33 : using wind energy
• CPC Class Codes: Y02W 10/37 : using solar energy

Abstract

Methods of sequestering carbon dioxide (CO₂) are provided. Aspects of the methods include precipitating a storage stable carbon dioxide sequestering product from an alkaline-earth-metal-containing water and then disposing of the product, e.g., by placing the product in a disposal location or using the product as a component of a manufactured composition. Also provided are systems for practicing methods of the invention.

Claims

1-20. -20. (canceled)

21. A method of sequestering carbon dioxide from a gaseous waste stream of an industrial plant, comprising:

a) charging brine with the gaseous waste stream to produce a CO₂-charged solution;

b) producing a slurry from the CO₂-charged solution, wherein the slurry comprises carbonates and/or bicarbonates; and

c) pumping the slurry underground.

22. The method of claim 21, wherein the industrial plant is a power plant or a cement plant.

23. The method of claim 22, wherein the gaseous waste stream further comprises SOx, mercury, or both.

24. The method of claim 23, wherein the method further comprises sequestering SOx, mercury, or both.

25. The method of claim 22, wherein the brine is a man-made brine or a natural brine.

26. The method of claim 25, wherein the brine is a man-made brine comprising a geothermal plant wastewater or a desalination waste water.

27. The method of claim 25, wherein the brine is a natural brine comprising a surface brine, a deep brine, or an alkaline lake.

28. The method of claim 25, wherein producing the slurry from the CO₂-charged solution comprises adjusting pH.

29. The method of claim 28, wherein pH is adjusted to a pH below pH 8-9.

30. The method of claim 28, wherein pH is adjusted to a pH above pH 9-10.

31. The method of claim 30, wherein pH is adjusted to a pH above pH 11.

32. The method according to claim 28, wherein pH is adjusted by a process comprising adding a base to the water.

33. The method of claim 32, wherein the base is hydroxide.

34. The method of claim 33, wherein the hydroxide is produced in an electrochemical process.

35. The method of claim 34, wherein the electrochemical process comprises a chloralkali process.

36. The method of claim 34, wherein the hydroxide is produced by applying a voltage across an anode and a cathode.

37. The method of claim 36, wherein the voltage applied across the anode and the cathode is less than 2.8 V.

38. The method of claim 37, wherein the voltage applied across the anode and the cathode is less than 2.0 V.

39. The method of claim 38, wherein the voltage applied across the anode and the cathode is less than 1.5 V.

40. The method of claim 39, wherein the voltage applied across the anode and the cathode is less than 1.0 V.

41. The method of claim 21, wherein the slurry further comprises strontium.

42. The method of claim 41, wherein the slurry comprises strontium at 3-10,000 ppm.

43. A method of sequestering carbon dioxide from a gaseous waste stream of an industrial plant, comprising:

a) preparing a sodium hydroxide solution in an electrochemical process;

b) charging brine with the gaseous waste stream to produce a CO₂-charged solution; and

c) using the sodium hydroxide solution in a process adapted to produce a precipitate comprising a metal carbonate, metal bicarbonate, or combination thereof from the CO₂-charged solution.

44. A method of sequestering carbon dioxide from a gaseous waste stream of an industrial plant, comprising:

a) preparing a sodium hydroxide solution in an electrochemical process;

b) charging seawater with the gaseous waste stream to produce a CO₂-charged solution; and

c) using the sodium hydroxide solution to produce a precipitate comprising a metal carbonate, metal bicarbonate, or combination thereof, from the CO₂-charged solution.