Method for removal of hydrogen sulfide

Details Method for removal of hydrogen sulfide Method for removal of hydrogen sulfide

1984-06-07

1985-06-25

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, B01D 5334, C01B 1704

Patent

active

045253382

ABSTRACT:
A two stage process for removing and subsequently recovering sulfur values from hydrogen sulfide or mercaptan-contaminated feed gas streams is disclosed. The process employs a polyvalent metal ion chelate redox couple to convert S.sup.-- to S and uses the metal ion reoxidation gas stream to remove the solid sulfur overhead as a flotation froth. The feed gas stream is contacted with the chelate in a first contacting zone, and additionally in the reoxidation zone.

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