Process for manufacturing sulfur from a solution of sodium sulfi

Details Process for manufacturing sulfur from a solution of sodium sulfi Process for manufacturing sulfur from a solution of sodium sulfi

1973-10-15

1976-06-29

Vertiz, Oscar R.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423183, 423242, 423428, 423548, 423551, 423575, C01B 1704, C01B 1760, C01C 1244, C01D 508

Patent

active

039668916

ABSTRACT:
A solution of sodium sulfite or sulfide is reacted with ammonium sulfate, so as to produce a gas containing SO.sub.2 or H.sub.2 S, NH.sub.3 and H.sub.2 O, which is thereafter treated for sulfur production and NH.sub.3 recovery, and a liquid outflow containing sodium sulfate which is reacted with CO.sub.2 and NH.sub.3, in order to produce NaHCO.sub.3 and regenerate the ammonium sulfate. NaHCO.sub.3 may be converted to sodium carbonate and CO.sub.2, the latter being re-used in the process.

REFERENCES:
patent: 1294526 (1919-02-01), Vis
patent: 2518530 (1950-08-01), Dooley
patent: 3493329 (1970-02-01), Stiers
patent: 3561925 (1971-02-01), Deschamps et al.
patent: 3598529 (1971-08-01), Deschamps et al.
patent: 3846535 (1974-11-01), Fonseca
patent: 3846538 (1974-11-01), Renault et al.
patent: 3846539 (1974-11-01), Renault et al.

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