Back to results
US 2025/0059037 A1Published application
Novel Process for the Production of Hydrogen Peroxide
AssigneeSolvay SA
InventorsAndrew Willson, Nuno Formiga, António Festas, Massimo Fedeli
Life of this patent
Estimating the term…
Abstract
Novel Process for the Production of Hydrogen Peroxide The invention relates to novel process for the production of hydrogen peroxide by the anthraquinone process. In particular, the invention relates to a new flow configuration for the recirculation and removal of the hydrogen peroxide in an aqueous phase from the hydrogen peroxide process.
Claims15
A process for the production of hydrogen peroxide by the anthraquinone process, wherein the process comprises the following steps:
- (1) hydrogenation of an organic working solution containing one or more anthraquinone derivatives in the presence of a heterogeneous catalyst in a hydrogenation reactor to obtain a hydrogenated organic working solution containing one or more hydrogenated anthraquinone derivatives;
- (2) oxidizing the hydrogenated organic working solution obtained in step (1) in an oxidation reactor, which is divided into an upper area, a middle area, and a lower area, by introducing the hydrogenated organic working solution obtained in step (1) to the upper area of the oxidation reactor and an oxygen-containing gas to the lower area of the oxidation reactor to form hydrogen peroxide in a counter current process and to obtain an oxidized organic working solution containing hydrogen peroxide;
- (3) either forwarding the oxidized organic working solution containing hydrogen peroxide obtained in step (2) to a combined degasser/decanter equipment, or decanting the oxidized organic working solution containing hydrogen peroxide obtained in step (2) directly in the lower area of the oxidation reactor followed by forwarding the oxidized organic working solution containing dissolved hydrogen peroxide to a degasser, for expansion of the entrained gas and degassing the oxidized organic working solution containing hydrogen peroxide;
- (4) introducing the degassed oxidized organic working solution obtained in step (3) to the lower part of an extraction column and combining it with an aqueous solution to form an aqueous phase containing hydrogen peroxide and an organic phase;
- (5) removing the aqueous phase obtained in step (4) from the lower part of the extraction column and removing the organic phase from the upper part of the extraction column and returning the organic phase back to the hydrogenation reactor;
- (6) introducing at least a part of the aqueous phase removed from the extraction column in step (5) back to the middle area of the oxidation reactor;
- and
- (7) recovering an aqueous hydrogen peroxide solution.
5 more elements
Dependencies are inferred from the claim text.