Carbon Dioxide Capture and Related Processes
First Claim
Patent Images
1. A process for capturing carbon dioxide comprising:
- processing water to generate an acidic solution and an alkaline solution;
neutralizing the acidic solution; and
capturing carbon dioxide from a source of carbon dioxide with the alkaline solution.
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Abstract
Processes for capturing carbon dioxide are described. The carbon dioxide may be captured from the atmosphere and/or from the waste stream of a carbon dioxide point source (e.g., power plants, chemical plants, natural gas fields, oil fields, industrial sites, etc.). The processes can involve capturing carbon dioxide using alkaline solutions (e.g., NaOH). In some processes, the carbon dioxide may react with the alkaline solution to form a product (e.g., NaHCO3). The alkaline solution may be made a number of different ways. In some of the processes, products produced during processing may be used to add value beyond carbon dioxide capture.
204 Citations
136 Claims
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1. A process for capturing carbon dioxide comprising:
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processing water to generate an acidic solution and an alkaline solution; neutralizing the acidic solution; and capturing carbon dioxide from a source of carbon dioxide with the alkaline solution. - View Dependent Claims (76, 79, 81, 84, 86, 91, 94, 103, 112, 113)
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119. A process for capturing carbon dioxide comprising:
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adding ash to water to form an alkaline solution; and capturing carbon dioxide from a source of carbon dioxide with the alkaline solution. - View Dependent Claims (122, 123, 124)
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120-121. -121. (canceled)
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- 129. A carbonate composition comprising a metal ion and a carbonate, wherein the carbonate is formed from carbon dioxide captured from a gaseous source of carbon dioxide by dissolution of the carbon dioxide in an alkaline solution, and wherein said alkaline solution is produced by processing water to generate said alkaline solution and an acidic solution.
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Specification