Carbon dioxide sequestration involving two-salt-based thermolytic processes
First Claim
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1. A method of sequestering carbon dioxide produced by a source, comprising:
- (a) heating a first halide or hydrate thereof with water to form a first hydroxide, oxide and/or hydroxychloride and HCl, and removing the HCl;
(b) admixing some or all of the first hydroxide, oxide, and/or hydroxychloride with a second halide or hydrate thereof and carbon dioxide to form a first halide or hydrate thereof, a carbonate salt, and water; and
(c) separating some or all of the carbonate salt from step b, whereby the carbon dioxide is sequestered into a mineral product form.
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Abstract
The present invention relates to an energy efficient carbon dioxide sequestration processes whereby Group 2 silicate minerals and CO2 are converted into limestone and sand using a two-salt thermolytic process that allows for the cycling of heat and chemicals from one step to another.
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Citations
52 Claims
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1. A method of sequestering carbon dioxide produced by a source, comprising:
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(a) heating a first halide or hydrate thereof with water to form a first hydroxide, oxide and/or hydroxychloride and HCl, and removing the HCl; (b) admixing some or all of the first hydroxide, oxide, and/or hydroxychloride with a second halide or hydrate thereof and carbon dioxide to form a first halide or hydrate thereof, a carbonate salt, and water; and (c) separating some or all of the carbonate salt from step b, whereby the carbon dioxide is sequestered into a mineral product form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification