Carbon molecular sieve adsorbent
AssigneeAir Products and Chemicals, Inc.
InventorsRoger Dean Whitley, Shubhra Jyoti Bhadra, Erdem Arslan, Yong Cao, Timothy Christopher Golden
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Abstract
Disclosed herein are rapid cycle pressure swing adsorption (PSA) process for separating O2 from N2 and/or Ar. The processes use a carbon molecular sieve (CMS) adsorbent having an O2/N2 and/or O2/Ar kinetic selectivity of at least 5 and an O2 adsorption rate (1/s) of at least 0.2000 as determined by linear driving force model at 1 atma and 86° F.
Claims25
A rapid cycle pressure swing adsorption (PSA) process for separating O2 from N2 and/or Ar, wherein the process utilizes a plurality of adsorption beds comprising a carbon molecular sieve (CMS) adsorbent having an O2/N2 and/or O2/Ar kinetic selectivity of at least 5 and an O2 adsorption rate (1/s) of at least 0.20 as determined by linear driving force model at 1 atma and 86° F., and wherein the process comprises subjecting each of the plurality of beds to a rapid PSA cycle comprising a feed step, at least one depressurization step, a purge step, and at least one re-pressurization step, the duration of the feed step being 60 seconds or less.
Use of a carbon molecular sieve (CMS) adsorbent in a rapid cycle pressure swing adsorption (PSA) process for separating O2 from N2 and/or Ar, wherein the CMS has an O2/N2 and/or O2/Ar kinetic selectivity of at least 5 and an O2 adsorption rate (1/s) of at least 0.20 as determined by linear driving force model at 1 atma and 86° F.
Dependencies are inferred from the claim text.