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Activated carbon as sole absorbent in rapid cycle hydrogen PSA

  • US 6,660,064 B2
  • Filed: 03/08/2002
  • Issued: 12/09/2003
  • Est. Priority Date: 03/08/2002
  • Status: Expired due to Term
First Claim
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1. A pressure swing adsorption process for recovering a product gas from a feed gas, said process comprising:

  • supplying a multiple-bed pressure swing adsorption apparatus comprising an adsorbent composition containing activated carbon as a major ingredient, wherein said adsorbent composition and said apparatus are substantially free of zeolite adsorbents;

    feeding a feed gas into said pressure swing adsorption apparatus during a feed period not exceeding 20 seconds, said feed gas comprising a mixture of hydrogen and at least one other member selected from the group consisting of carbon dioxide, carbon monoxide, hydrocarbon, oxygen, methane, argon and nitrogen; and

    recovering said product gas from said pressure swing adsorption apparatus, provided that when said product gas is hydrogen a rate of hydrogen recovery is greater than 82%.

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