Characteristics of tunable adsorbents for rate selective separation of nitrogen from methane

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United States of America Patent

PATENT NO 11471820
APP PUB NO 20210008487A1
SERIAL NO

17034831

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Abstract

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The present invention generally relates to a pressure swing adsorption process for separating an adsorbate impurity from a feed stream comprising product gas, said process comprising feeding the feed stream to an adsorbent bed at a pressure of from about 60 psig to 2000 psig, wherein said adsorbent bed comprises adsorbent having:

    An isosteric heat of adsorption of from about 5 kJ/mol to about 30 kJ/mol, as determined by the LRC method, for the adsorbate,and an equivalent 65 kJ/mol or less isosteric heat of adsorption for the product,wherein the adsorbent has a rate of adsorption for the adsorbate impurity that is at least 10 times greater than the rate of adsorption for the product gas as determined by the TGA method and recovering said product gas with a reduced a level of said adsorbate impurity.

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Patent Owner(s)

Patent OwnerAddress
PRAXAIR TECHNOLOGY INC10 RIVERVIEW DRIVE DANBURY CT 06810

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barrett, Philip A Tonawanda, US 18 110
Pontonio, Steven J Eden, US 14 43
Stephenson, Neil A E. Amherst, US 17 51
Stuckert, Nicholas R Grand Island, US 13 3

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