Hydrogenation method and hydrogenation device for oxanthranol-containing working solution

Abstract

The invention discloses a hydrogenation method and a hydrogenation device for an oxanthranol-containing working solution. The hydrogenation method comprises the following steps: carrying out hydrogenation reaction on hydrogen-containing gas and an anthraquinone working solution under a catalytic action of a catalyst to generate the oxanthranol-containing working solution; condensing, separating, filtering and pressurizing tail gas generated in a hydrogenation reaction process for recycling; filtering one part of the generated oxanthranol-containing working solution, and then removing the catalyst; carrying out cooling, filtering and security filtering, and then carrying out follow-up oxidation reaction; carrying out hydrogenation reaction on most oxanthranol-containing working solution again. After the process is industrialized, the production efficiency can be improved by 40 percent or above on the basis of an existing domestic fixed-bed hydrogenation process; in addition, dangerous factors in a production process are overcome in a production principle and process essence, and the concentration of a product can be improved from 30 percent to 40 percent or above; besides, primary indicators, such as the content of organic carbon and the content of nonvolatile matters, of the quality of the product are better than those of a product produced by a fixed-bed process; the hydrogenation method and the hydrogenation device have an epoch-making pushing meaning for development of hydrogen peroxide in China.

Description

technical field [0001] The invention relates to a hydrogenation method and a hydrogenation device for a hydrogen-containing anthraquinone working fluid. Background technique [0002] In the prior art, the preparation of hydrogen peroxide is generally realized by the anthraquinone method. The anthraquinone method uses 2-ethylanthraquinone as a carrier, palladium (or nickel) as a catalyst, and is formed by H 2 and O 2 direct synthesis of H 2 o 2 . It is divided into four processes: hydrogenation, oxidation, extraction and post-treatment. [0003] The hydrogenation process generally adopts a fixed-bed process, using alkyl anthraquinone as a carrier, and using heavy aromatics and tetrabutylurea as a solvent to form a working solution. Under certain pressure, temperature and the presence of a palladium catalyst, the working fluid undergoes a hydrogenation reaction with hydrogen to generate a solution containing the corresponding alkylhydroanthraquinone (referred to as the h...

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Problems solved by technology

[0005] Although the fixed-bed anthraquinone production process is the mainstream of domestic production of hydrogen peroxide devices, it also shows low production efficiency, poor product quality, high production consumption per unit product, heavy production equipment, large investment, and poor production and operation safety. More disadvantages

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