Separation of thiosulfate from Stretford solution

Details Separation of thiosulfate from Stretford solution Separation of thiosulfate from Stretford solution

1979-03-05

1982-12-21

Peters, G.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, C01B 1704

Patent

active

043649181

ABSTRACT:
A thiosulfate-containing purge stream generated in a Stretford-type process for purifying a hydrogen sulfide contaminated gas stream is treated with a nickel ethylenediamine complex to remove thiosulfate as a nickel ethylenediamine thiosulfate precipitate. The precipitate is treated with acid to decompose the thiosulfate and then with lime to recover the nickel ethylenediamine complex for reuse.

REFERENCES:
patent: 3959452 (1976-05-01), Espenscheid et al.
Gast et al.; "J.A.C.S"; vol. 23, Jul. 1951; pp. 3037-3039.
"Chemical Abstracts", vol. 47; 1953, p. 438d.

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