Adsorption

, Volume 1, Issue 4, pp 313–320 | Cite as

Production of oxygen enriched air by rapid pressure swing adsorption

  • S. Sircar
  • B. F. Hanley
Article

Abstract

A novel rapid pressure swing adsorption (RPSA) process is described for production of 25–50% oxygen enriched air. The embodiment consists of one or more pairs of adsorbent layers contained in a single adsorption vessel. The layers undergo simultaneous pressurization-adsorption and simultaneous depressurization-purge steps. A total cycle time of 6–20 seconds is used. The process yields a very large specific oxygen production rate and a reasonable oxygen recovery for production of 20–50 mole% oxygen enriched gas.

It is demonstrated by a simple mathematical model of isothermal single adsorbate pressure swing ad(de)sorption concept on a single adsorbent particle that the specific production rate of a PSA process cannot be indefinitely increased by reducing the cycle time of operation when adsorbate mass transfer resistances are finite.

Key words

pressure swing adsorption air separation zeolite 

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • S. Sircar
    • 1
  • B. F. Hanley
    • 1
  1. 1.Air Products and Chemicals, Inc.AllentownUSA

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