Carbon dioxide absorbent, carbon dioxide separating apparatus, and reformer
First Claim
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1. A carbon dioxide absorbent comprising:
- lithium silicate containing lithium orthosilicate and lithium metasilicate, the lithium metasilicate being contained in an amount of 5% by weight or more to 40% by weight or less with respect to the total amount of lithium orthosilicate and lithium metasilicate, where the lithium metasilicate produced by reaction of the lithium orthosilicate and carbon dioxide is excluded.
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Abstract
A carbon dioxide absorbent includes lithium silicate containing lithium orthosilicate and lithium metasilicate, the lithium metasilicate being contained in an amount of 5% by weight or more to 40% by weight or less with respect to the total amount of lithium orthosilicate and lithium metasilicate, where the lithium metasilicate produced by reaction of the lithium orthosilicate and carbon dioxide is excluded.
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Citations
17 Claims
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1. A carbon dioxide absorbent comprising:
lithium silicate containing lithium orthosilicate and lithium metasilicate, the lithium metasilicate being contained in an amount of 5% by weight or more to 40% by weight or less with respect to the total amount of lithium orthosilicate and lithium metasilicate, where the lithium metasilicate produced by reaction of the lithium orthosilicate and carbon dioxide is excluded. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A carbon dioxide separating apparatus comprising:
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a reaction vessel provided with introduction and discharge pipes for carbon dioxide; a carbon dioxide absorbent stored in the reaction vessel, including lithium silicate containing lithium orthosilicate and lithium metasilicate, the lithium metasilicate being contained in an amount of 5% by weight or more to 40% by weight or less with respect to the total amount of lithium orthosilicate and lithium metasilicate, where the lithium metasilicate produced by reaction of the lithium orthosilicate and carbon dioxide is excluded; and heating means disposed around the outer circumference of the reaction vessel for supplying heat to the reaction vessel. - View Dependent Claims (9, 10, 11, 12)
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13. A reformer comprising:
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a reaction vessel having an introduction pipe which introduces a raw material gas containing carbon and steam, and a discharge pipe which discharges a produced gas; a solid catalyst stored in the reaction vessel to promote a reforming reaction; a carbon dioxide absorbent stored in the reaction vessel, including lithium silicate containing lithium orthosilicate and lithium metasilicate, the lithium metasilicate being contained in an amount of 5% by weight or more to 40% by weight or less with respect to the total amount of lithium orthosilicate and lithium metasilicate, where the lithium metasilicate produced by reaction of the lithium orthosilicate and carbon dioxide is excluded; and heating means disposed around the outer circumference of the reaction vessel for supplying heat to the reaction vessel. - View Dependent Claims (14, 15, 16, 17)
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Specification