Separation of hydrogen sulfide from gaseous and non-aqueous liqu

Details Separation of hydrogen sulfide from gaseous and non-aqueous liqu Separation of hydrogen sulfide from gaseous and non-aqueous liqu

1984-04-27

1985-07-02

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423220, 423224, 423578R, 204101, 204136, 210758, C01B 1705, C25B 100

Patent

active

045267740

ABSTRACT:
An indirect hydrogen sulfide conversion process for the production of elemental hydrogen and sulfur. The process is based upon the electrochemical oxidation of iodide in an aqueous solution with a pH in the range of 0 to 1 at high current densities and current efficiencies. Hydrogen gas is produced concurrently with soluble triiodide. Treatment of a gaseous or non-aqueous liquid stream with electrolyte solutions containing triiodide yields a sulfur product in plastic form. The sulfur product can be recrystallized from a solvent to yield sulfur of comparable purity to that presently produced.

REFERENCES:
patent: 1034646 (1912-08-01), Rabenah
patent: 1497649 (1924-06-01), Marx
patent: 2809885 (1957-10-01), Ditman et al.
patent: 3401101 (1968-09-01), Keller, Jr.
patent: 3409520 (1968-11-01), Bolmer
patent: 4220505 (1980-09-01), Deem

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