Patent ID: 6447744
Filing Date: 2002-09-10
Classification: B01J,C01B

Abstract:
A process for the preparation of hydrogen peroxide by the anthraquinone process, comprising a hydrogenation stage and an oxidation stage, comprising, in the hydrogenation stage:passing a working solution comprising an anthraquinone reaction carrier and a gas phase comprising hydrogen over a fixed bed of particulate catalyst arranged in a vertically aligned columnar hydrogenation reactor at a temperature of 10Â° to 100Â° C. and under a pressure of 0.1 to 2 MPa, wherein the hydrogenation reactor is operated as a bubble column, in that a mixture of the working solution and the gas phase comprising hydrogen is passed through from the bottom of the hydrogenation reactor upwards with an empty tube speed of the working solution in a range of 0.05 to 100 m/h.