Hydrogen peroxide-based chlorine dioxide process

Details Hydrogen peroxide-based chlorine dioxide process Hydrogen peroxide-based chlorine dioxide process

C - Chemistry, Metallurgy

01

B

C01B 11/02 (2006.01)

Patent

CA 2135615

Chlorine dioxide is continuously produced at high efficiency in a single vessel process by reduction of chlorate ions with hydrogen peroxide in an aqueous acidic medium maintained at its boiling point under a subatmospheric pressure. The hydrogen peroxide is pre-mixed with at least a portion of the aqueous chlorate solution feed or the sulfuric acid feed or a mixture thereof. By pre-mixing the hydrogen peroxide feed, the occasional decomposition of hydrogen peroxide and the resulting foaming of the generator liquor is eliminated.

Du dioxyde de chlore est produit en continu avec un haut rendement grâce à un procédé en contenant unique, par réduction d'ions chlorates avec du peroxyde d'hydrogène dans un milieu aqueux acide, maintenu à son point d'ébullition, en dessous de la pression atmosphérique. Le peroxyde d'hydrogène est pré-mélangé avec au moins une portion de la solution aqueuse de chlorate ou l'alimentation d'acide sulfurique ou un mélange des deux. Grâce au prémélange de l'alimentation de peroxyde d'hydrogène, on évite la décomposition occasionnelle du peroxyde et le moussage résultant de la liqueur du générateur.

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