Removal of a target gas from a mixture of gases by swing adsorption with use of a turboexpander
First Claim
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1. A process for removing a target gas component from a gas mixture containing said target gas component and a product gas component, which process comprises:
- a) conducting said gas mixture to a turboexpander wherein the volume of said gas mixture is expanded, thereby lowering its pressure;
b) conducting said lowered pressure gas mixture from said turboexpander to a swing adsorption gas separation unit wherein said gas separation unit contains an adsorbent contactor comprised of an effective microporous adsorbent material for removing at least a portion of said target gas component from said gas mixture by adsorbing at least a portion of said target gas component onto said adsorbent material;
c) producing a product gas stream with a lower mol % of said target gas component than said gas mixture and a higher mol % of said product gas component than said gas mixture;
d) collecting said the product gas stream;
e) desorbing at least a portion of the adsorbed target gas component from said adsorbent material, thereby resulting in a waste gas stream which has a higher mol % of said target gas component than said gas mixture; and
f) collecting said waste gas stream.
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Abstract
The separation of a target gas selected from a high pressure gas mixture containing said target gas as well as a product gas using a swing adsorption process unit. A turboexpander is used upstream of the swing adsorber to reduce the pressure of the high pressure gas mixture. A compressor is optionally used downstream of the swing adsorber to increase the pressure of the target gas-containing stream for injecting into a subterranean formation.
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30 Claims
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1. A process for removing a target gas component from a gas mixture containing said target gas component and a product gas component, which process comprises:
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a) conducting said gas mixture to a turboexpander wherein the volume of said gas mixture is expanded, thereby lowering its pressure; b) conducting said lowered pressure gas mixture from said turboexpander to a swing adsorption gas separation unit wherein said gas separation unit contains an adsorbent contactor comprised of an effective microporous adsorbent material for removing at least a portion of said target gas component from said gas mixture by adsorbing at least a portion of said target gas component onto said adsorbent material; c) producing a product gas stream with a lower mol % of said target gas component than said gas mixture and a higher mol % of said product gas component than said gas mixture; d) collecting said the product gas stream; e) desorbing at least a portion of the adsorbed target gas component from said adsorbent material, thereby resulting in a waste gas stream which has a higher mol % of said target gas component than said gas mixture; and f) 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)
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Specification