Method for producing hydrogen peroxide

Details Method for producing hydrogen peroxide Method for producing hydrogen peroxide

C - Chemistry, Metallurgy

01

B

C01B 15/023 (2006.01)

Patent

CA 2398330

The invention relates to a method for producing hydrogen peroxide according to the anthraquinone method. The aim of the inventive improvement is the reduction of epoxides in the oxidation stage. According to the invention, the hydrogenated working solution, containing a 2-alkyl- tetrahydroanthrahydroquinone, is mixed with a partially or preferably, completely oxidised working solution and the mixture is oxidised in the oxidation reactor with a gas containing oxygen. The volume ratio of hydrogenated working solution to oxidised working solution is between 5 to 1 to 1 to 5, especially 2 to 1 to 1 to 2.

Procédé de production de peroxyde d'hydrogène reposant sur le procédé à l'anthraquinone, l'amélioration concernant la réduction de la formation d'époxydes dans la phase d'oxydation. Selon la présente invention, la solution de travail hydrogénée, contenant une 2-alkyl-tétrahydroanthrahydroquinone, est mélangée avec une solution de travail partiellement ou de préférence totalement oxydée, ce mélange étant ensuite oxydé dans un réacteur d'oxydation à l'aide d'un gaz contenant de l'oxygène. Le rapport en volume de la solution de travail hydrogénée à la solution de travail oxydée se situe entre 5 à 1 et 1 à 5, en particulier entre 2 à 1 et 1 à 2.

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