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Oxidizer and oxidation process for a desulphurization process

  • US 7,279,148 B1
  • Filed: 03/14/2007
  • Issued: 10/09/2007
  • Est. Priority Date: 06/05/2006
  • Status: Active Grant
First Claim
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1. A process for continuously removing hydrogen sulfide from a gaseous stream comprising the following steps in combination:

  • a. providing a feed stream containing hydrogen sulfide to a oxidation-reduction process;

    b. contacting the feed gas stream with a chelated metal catalyst to produce a first hydrogen sulfide-free gas stream and a second stream comprising elemental sulfur and chelated metal catalyst solution;

    c. removing the first hydrogen sulfide-free gas stream from the process;

    d. providing a hollow fiber membrane having an interior and an exterior;

    e. directing at least a portion of the second stream from step b. to the exterior of the hollow fiber membrane;

    f. introducing a pressurized, oxygen containing gas stream into the interior of the hollow fiber membrane such that the oxygen diffuses through the hollow fiber membrane and contacts the second stream; and

    g. separating elemental sulfur from the chelated metal catalyst solution.

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