CO;removal sorbent composition with high chemical stability during multiple cycles
First Claim
1. A clay-alkali-amine CO2 sorbent composition comprising:
- a clay substrate;
a first basic alkali salt; and
an amine liquid;
where the basic alkali salt is supplied at from about 1 part to about 50 parts per 100 parts of the clay substrate by weight, andwhere the amine liquid is supplied at from about 1 part to about 10 parts per 10 parts of a clay-alkali combination by weight;
wherein said clay substrate, said first basic alkali salt and said amine liquid have been integrated to produce the clay-alkali-amine CO2 sorbent.
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Abstract
Disclosed herein is a clay-alkali-amine CO2 sorbent composition prepared by integrating a clay substrate, basic alkali salt, and amine liquid. The basic alkali salt is present relative to the clay substrate in a weight ratio of from about 1 part to about 50 parts per 100 parts of the clay substrate. The amine liquid is present relative to a clay-alkali combination in a weight ratio of from about 1 part to about 10 parts per 10 parts of the clay-alkali combination. The clay-alkali-amine C02 sorbent is particularly advantageous for low temperature CO2 removal cycles in a gas stream having a C02 concentration less than around 2000 ppm and an oxygen concentration around 21%, such as air.
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Citations
19 Claims
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1. A clay-alkali-amine CO2 sorbent composition comprising:
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a clay substrate; a first basic alkali salt; and an amine liquid; where the basic alkali salt is supplied at from about 1 part to about 50 parts per 100 parts of the clay substrate by weight, and where the amine liquid is supplied at from about 1 part to about 10 parts per 10 parts of a clay-alkali combination by weight;
wherein said clay substrate, said first basic alkali salt and said amine liquid have been integrated to produce the clay-alkali-amine CO2 sorbent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A clay-alkali-amine CO2 sorbent composition comprising:
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a clay substrate, a first basic alkali salt, where the basic alkali salt is comprised of a metallic cation and an anion where the metallic cation is Na, K, Li, Rb, Cs, Ca, Ba, or Sr and where the anion is hydroxide ion, a carbonate ion, an acetate ion, a phosphate ion, or an oxide ion, and where the basic alkali salt is supplied at from about 1 part to about 50 parts per 100 parts of the clay substrate by weight; where the clay substrate and the basic alkali salt comprise porous clay-alkali pellets;
an amine liquid comprised of an amine,where the amine liquid is supplied at from about 1 part to about 10 parts per 10 parts of a clay-alkali combination by weight, and where the amine liquid to penetrates some portion of the pores of the porous clay-alkali pellets. - View Dependent Claims (16, 17, 18, 19)
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Specification