An anthraquinone method for producing hydrogen peroxide system and anthraquinone method for producing hydrogen peroxide

Abstract

The invention discloses a system and method for producing hydrogen peroxide through an anthraquinone method. The system comprises the four unit processes of hydrogen dissolving, hydrogenation, oxidation and extraction, wherein a hydrogenation unit comprises a series fixed bed and upflow-type tubular reactors, and working liquid and hydrogen are subjected to a hydrogenation reaction in the hydrogenation unit to obtain hydrogenation liquid; an oxidation unit comprises an oxidation tower, the hydrogenation liquid and oxygen-containing gas are subjected to an automatic oxidation reaction to obtainoxidation liquid; and an extraction unit comprises an extraction tower, hydrogen peroxide in the oxidation liquid is extracted by the water, and thus a high-concentration hydrogen peroxide product isobtained. According to the system and method, the anthraquinone hydrogenation reaction rate can be significantly improved, the anthraquinone hydrogenation reaction efficiency can be significantly improved, the uniformity of the reaction process is maintained, side reactions are less, the obtained hydrogenation liquid is good in quality, small in by-product number and low in viscosity, the gas-liquid mass transfer rate in the oxidation process is increased, the extraction efficiency in the extraction process is improved, the oxidation time is significantly shortened, and the number of actual tower plates of the extraction tower is decreased.

Description

technical field

[0001] The invention belongs to a hydrogen peroxide production process, in particular to a system for producing hydrogen peroxide by an anthraquinone method and a method for producing hydrogen peroxide by an anthraquinone method. Background technique

[0002] At present, the main method for producing hydrogen peroxide in industry is the anthraquinone method. Anthraquinone fixed-bed hydrogen peroxide production process uses 2-ethylanthraquinone as the working carrier, aromatic hydrocarbon, trioctyl phosphate or 2-methylcyclohexyl acetate as the solvent, and is formulated into a working solution in a certain proportion. In the fixed bed, under the catalysis of a certain temperature, pressure and palladium catalyst, the hydrogenation reaction is carried out with hydrogen, and the hydrogenated liquid is then oxidized with oxygen in the air, and the obtained oxidized liquid is extracted and purified by pure water to obtain the finished product Hydrogen peroxide a...

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