PROCESS FOR PRODUCING HYDROGEN PEROXIDE

A process for the manufacture of hydrogen peroxide by the AO process comprising the two alternate essential steps of (a) hydrogenation of a working solution in a hydrogenation unit (hydrogenator) in the presence of a catalyst wherein said working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of said at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; and further comprising the step of (c) extracting the hydrogen peroxide formed in the oxidation step in an extraction unit wherein the hydrogenation oxidation and extraction steps are performed in an reactor system which is designed as a compact modular system of a hydrogenation an oxidation and an extraction unit and wherein said reactor system is configured to operate without a reversion (regeneration) unit for continuous reversion of the working solution as a small to medium scale AO process with a production capacity of hydrogen peroxide of up to 20 kilo tons per year preferably with a production capacity of hydrogen peroxide of up to 15 kilo tons per year and more preferably with a production capacity of hydrogen peroxide of up to 10 kilo tons per year wherein the working solution and/or the catalyst are replaced and/or treated for regeneration or reactivation only intermittently or periodically e.g. with a low frequency.