Process for the production of sulfur from sulfur dioxide extract

Details Process for the production of sulfur from sulfur dioxide extract Process for the production of sulfur from sulfur dioxide extract

1974-11-07

1976-07-20

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423564, C01B 1704

Patent

active

039707440

ABSTRACT:
A sulfur dioxide containing gas stream is purified by passage through an absorber containing an aqueous absorption solution for sulfur dioxide. Sulfur dioxide-laden aqueous absorption solution is continuously removed from the absorber. Approximately one-third is passed to a sulfur production zone. The balance of the solution is passed to a sulfur dioxide stripping zone where the sulfur dioxide is separated from the absorption solution which is returned to the absorber. The extracted sulfur dioxide is catalytically hydrogenated to hydrogen sulfide which is passed to the sulfur production zone for reaction with sulfur dioxide to form elemental sulfur. After the formation of elemental sulfur, the balance of the aqueous absorption solution essentially free of sulfur dioxide is returned to the absorber.

REFERENCES:
patent: 1967263 (1934-07-01), Rosenstein
patent: 2729543 (1956-01-01), Keller
patent: 3495941 (1970-02-01), Van Helden
patent: 3703366 (1972-11-01), Cullom
patent: 3764665 (1973-10-01), Groendaal

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