Effects of the residence time in four-bed pressure swing adsorption process

Se Il Yang, Ju Yong Park, Dae Ki Choi, Sung Hyun Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Hydrogen separation by the four-bed PSA process using layered beds of activated carbon and zeolite 5A was investigated experimentally and theoretically to recover high purity H2 from steam methane reforming off-gas. The recovery increased with increasing the residence time at given product purity because of the contact time between the impurities and the adsorbents is increased. The difference of increasing the recovery became smaller with increasing the residence time and then the recovery was not increased after 43.6 seconds of the residence time. The minimum residence time exists to obtain the maximum recovery at desired product purity (99.999%{thorn}).

Original languageEnglish
Pages (from-to)1023-1044
Number of pages22
JournalSeparation Science and Technology
Issue number5
Publication statusPublished - 2009 Jan

Bibliographical note

Funding Information:
This work was supported by SK Corporation and National RDND Organization for Hydrogen and Fuel Cell, Ministry of Commerce, Industry, and Energy.

Copyright 2009 Elsevier B.V., All rights reserved.


  • Hydrogen
  • Pressure swing adsorption
  • Residence times

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Process Chemistry and Technology
  • Filtration and Separation


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