Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Production of High Purity Oxygen by Combination of Membrane and PSA Methods

분리막과 PSA혼합법에 의한 고순도 산소의 제조

  • Hwang, Sun-Tak (Department of Chemical Engineering, University of Cincinnati, ML 1071 Cincinnati, OH 45221-0171 U.S.A.)
  • Published : 1994.03.01
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Abstract

There are growing needs to produce relatively high purity(99.0% or higher) oxygen at low cost. For small scale production, both pressure swing adsorption(PSA) and membrane process are competitive and less expensive or more convenient than well known cryogenic fractionation technology. A continuous membrane column(CMC) combined with a PSA oxygen generator can be employed to produce high purity oxygen continuously. The oxygen enriched gas generated by a PSA unit, with a concentration of 93~94%, is fed to the CMC that consism of three modules of poly(imide) hollow fibers. Several experiments were conducted by varying parameters, such as feed flow rate, transmembrane pressure drop, stage cut, and feed location in order to obtain a high oxygen concentration above 99.0%. A two-series unit mode was also employed with CMC operation to optimize the given membrane area.

Keywords

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