Removal of CO 2 , N 2 , or H 2 S from gas mixtures by swing adsorption with low mesoporosity adsorbent contactors
First Claim
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1. A process for removing a first gas component selected from the group consisting of CO2, N2, and H2S from a gas mixture containing said first gas component and a second gas component, which process comprises:
- a) conducting said gas mixture to a swing adsorption gas separation unit wherein the gas separation unit contains at least one adsorbent contactor comprised of;
i) a gas inlet end; and
ii) a gas outlet end;
wherein the gas inlet end and the gas outlet end are in fluid connection by a plurality of open flow channels wherein the surface of the open flow channels are comprised of an adsorbent material that has a selectivity for said first gas component over said second gas component of a gas mixture greater than 5, wherein the contactor has less than about 20% of its open pore volume in pores with diameters greater than about 20 angstroms and less than about 1 micron, and wherein at least a fraction of said first gas component is adsorbed into said adsorbent material, thereby resulting in a product stream depleted of said first gas component;
b) collecting said the product stream;
c) desorbing the adsorbed gas from said adsorbent material, thereby resulting in a waste gas stream rich in said first gas component; and
d) collecting said waste gas stream.
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Abstract
The present invention relates to the separation of one or more of CO2, N2, and H2S gas components from a gas mixture containing at least a second gas using a swing adsorption process unit. The adsorbent contactors of the swing adsorption process unit are engineered structured adsorbent contactors having a plurality of flow channels wherein 20 volume percent or less of the open pore volume of the contactors is in the mesopore and macropore range.
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Citations
35 Claims
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1. A process for removing a first gas component selected from the group consisting of CO2, N2, and H2S from a gas mixture containing said first gas component and a second gas component, which process comprises:
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a) conducting said gas mixture to a swing adsorption gas separation unit wherein the gas separation unit contains at least one adsorbent contactor comprised of; i) a gas inlet end; and ii) a gas outlet end; wherein the gas inlet end and the gas outlet end are in fluid connection by a plurality of open flow channels wherein the surface of the open flow channels are comprised of an adsorbent material that has a selectivity for said first gas component over said second gas component of a gas mixture greater than 5, wherein the contactor has less than about 20% of its open pore volume in pores with diameters greater than about 20 angstroms and less than about 1 micron, and wherein at least a fraction of said first gas component is adsorbed into said adsorbent material, thereby resulting in a product stream depleted of said first gas component; b) collecting said the product stream; c) desorbing the adsorbed gas from said adsorbent material, thereby resulting in a waste gas stream rich in said first gas component; and d) collecting said waste gas stream. - 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)
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Specification