Method of removing hydrogen sulfide from gases utilizing a stabi

Details Method of removing hydrogen sulfide from gases utilizing a stabi Method of removing hydrogen sulfide from gases utilizing a stabi

1982-05-24

1983-12-20

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, C01B 1704, B01D 5334

Patent

active

044217331

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 a stabilizer selected from specified bisulfites 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: 3068065 (1962-12-01), Hartley et al.
patent: 3580950 (1971-05-01), Bersworth
patent: 3933993 (1976-01-01), Salemme
patent: 4009251 (1977-02-01), Meuly
patent: 4091073 (1978-05-01), Winkler

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