H.sub.2 S Removal

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

1981-11-24

1983-06-14

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, C01B 1704, B01D 5334

Patent

active

043882935

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 ligand 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.

REFERENCES:
patent: 4009251 (1977-02-01), Meuly
patent: 4076621 (1978-02-01), Hardison
patent: 4189462 (1980-02-01), Thompson
Lange's Handbook of Chem., 12 ed., McGraw-Hill, 1979, pp. 5-37 and 5-40.

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