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US 4,552,748 AGranted
Method in the production of hydrogen peroxide
AssigneeEka AB
InventorsCarl T. Berglin, Wolfgang Herrmann
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AssigneeEka AB
InventorsCarl T. Berglin, Wolfgang Herrmann
Estimating the term…
A method in the production of hydrogen peroxide is described, utilizing the so-called anthraquinone process in which alkylated anthraquinones dissolved in organic solvents to form a liquid working solution, are alternately reduced and oxidized. The working solution is subjected to catalytic hydrogenation by contacting it with hydrogen in the presence of a hydrogenation catalyst. The contact with hydrogen is established in a fixed catalyst bed comprising one or more solid catalyst bodies, each of which consists of a thin-walled, coherent, solid body of a structure forming parallel channels through which the working solution and hydrogen gas are allowed to pass. The channels of the catalyst bed are of equal length and parallel to the direction of flow of the working solution. The catalyst preferably is provided in a thin layer on the walls of the structure, preferably by means of a porous carrier.
An improved method in the production of hydrogen peroxide by the alternate reduction and oxidation of alkylated anthraquinones which are dissolved in one or more organic solvents to form a liquid working solution, said working solution being subjected to catalytic hydrogenation in a reactor by contact with hydrogen in the presence of a hydrogenation catalyst, the improvement comprising causing an inflow of the working solution and hydrogen to flow through a fixed catalyst body having thin walls defining a multiplicity of parallel through channels of about equal length to divide said inflow into a multiplicity of partial flows of working solution and hydrogen, the central portions of said through channels generally permitting unimpeded flow, the hydrogenation catalyst being attached to said walls, whereby the contact time of the working solution and the hydrogen with the catalyst body for said partial flows is approximately equal.
Dependencies are inferred from the claim text.