Simultaneous scrubbing and oxidation of hydrogen sulfide using e

Details Simultaneous scrubbing and oxidation of hydrogen sulfide using e Simultaneous scrubbing and oxidation of hydrogen sulfide using e

1982-08-10

1984-02-28

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423224, 423573R, B01D 5334, C01B 1705

Patent

active

044341458

ABSTRACT:
In the scrubbing and simultaneous oxidation of hydrogen sulfide with an aqueous alkaline scrubbing solution containing five-valent vanadium as the oxidizing agent, the sulfide being converted into higher oxidation states with simultaneous reduction of the five-valent vanadium to four-valent vanadium, the scrubbing solution subsequently being regenerated for reuse in a downstream oxidizer by treatment with an oxygen-containing gas for the reoxidation of the four-valent vanadium, to avoid losses of vanadium when the pH in the scrubbing solution is below 9.5, using the vanadium in a ration which exceeds the stoichiometric ratio for the oxidation of the hydrogen sulfide.

REFERENCES:
patent: 4125597 (1978-11-01), Fleck
Kohl et al. "Gas Purification", 3rd Ed., 1979, Gulf Publishing Company, Houston, pp. 476-482.

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