H.sub.2 S Removal process

Details H.sub.2 S Removal process H.sub.2 S Removal process

1982-09-30

1983-08-23

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, 423228, C01B 1704, B01D 5334

Patent

active

044003684

ABSTRACT:
A cyclic process for the removal of hydrogen sulfide, and carbon dioxide, from a variety of gas streams is disclosed. The gas stream containing the sour gas(es) is contacted with an aqueous solution of a specific reactant ligands or chelate, or mixtures thereof, optionally in an absorbent, containing specific stabilizers for improvement of chelate life. The hydrogen sulfide is converted to sulfur, CO.sub.2 may be absorbed to produce a purified gas stream, and the reactant chelate is reduced. The process includes sulfur removal and regeneration of the reactant chelate.

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patent: 3580950 (1971-05-01), Bersworth
patent: 3928548 (1975-12-01), Deschamps et al.
patent: 3933993 (1976-01-01), Salemme
patent: 3956473 (1976-05-01), Mimoun et al.
patent: 4009251 (1977-02-01), Meuly
patent: 4036942 (1977-02-01), Sibeud et al.
patent: 4091073 (1978-05-01), Winkler
patent: 4278646 (1981-07-01), Lynn et al.

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