Continental Oil Company

Robert T Struck

Metro D Kulik

Everett Gorin

Everett Gorim

An improvement in regenerative SO.sub.2 scrubbing systems which use sodium, potassium or ammonium carbonate to react with the SO.sub.2 to form sulfite, wherein a thiosulfate-rich aqueous solution of the carbonate is used to prevent oxidation of the sulfite to sulfate; to serve both as a source of the carbonate and as a source of sulfite-reducing agent; and finally to increase the salt concentration in the SO.sub.2 absorbent solution, to thereby permit operation of the scrubbing system at higher temperatures than those normally employed.

Treatment of gases containing sulfur dioxide

An improvement in wet regenerative SO.sub.2 scrubbing systems using a sulfite-forming additive wherein a thiosulfate-rich aqueous solution is used to prevent oxidation of sulfite to sulfate, to serve as a source of the sulfite-forming additive, and also to increase the salt concentration of the SO.sub.2 absorbent, to thereby permit operation of the scrubbing system at higher temperature.

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Pittsburgh, PA, United States of America

Robert T Struck