Slurry bed hydrogenation reactor for hydrogen peroxide production by anthraquinone method and its application

Abstract

The invention discloses a slurry bed hydrogenation reactor for preparing hydrogen peroxide by adopting an anthraquinone process and application of the slurry bed hydrogenation reactor. The hydrogenation reactor comprises an ascension pipe, an expanding section for expanding the upper pipe diameter of the ascension pipe, and a solid-liquid separator, wherein the expanding section is communicated with the upper part of the solid-liquid separator; the bottom of the solid-liquid separator is connected with the bottom of the ascension pipe; a guide cylinder is arranged in the expanding section; the bottom of the ascension pipe is provided with a raw material inlet; the top of the expanding section is provided with a gas outlet; a filter assembly is arranged in the solid-liquid separator and provided with a purified liquor outlet. The method for preparing the hydrogen peroxide is characterized in that the slurry bed hydrogenation reactor is applied to a hydrogenation unit, the gas-liquid-solid three-phase separation efficiency is high, the catalyst locality cannot be excessively hydrogenated, the excessive hydrogenation possibility is reduced, the hydrogenation efficiency is high, and a hydrogen peroxide product with the relatively high concentration can be obtained.

Description

technical field [0001] The present invention relates to a slurry bed loop reactor and its application method, more specifically, to a slurry bed reactor suitable for the hydrogenation process in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide Methods. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material, which is widely used in papermaking, textile, chemical synthesis, military industry, electronics, food processing, medicine, cosmetics, environmental protection, metallurgy and many other fields. Hydrogen peroxide decomposes to produce water and oxygen, which has no secondary pollution to the environment and is a green chemical. At present, the anthraquinone method is widely used in the production of hydrogen peroxide at home and abroad. The anthraquinone method to produce hydrogen peroxide uses anthraquinone derivatives as the working carrier. Under the action of a c...

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Problems solved by technology

At present, the most commonly used in the anthraquinone hydrogenation process in China is the downflow fixed bed reactor, that is, the trickle bed reactor, but the fixed bed reactor has low catalyst utilization efficiency, low reaction selectivity, uneven temperature distribution in the bed, The problem of large local liquid holding capacity of the catalyst and serious degradation of the working fluid

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