Hydrogen peroxide producing efficient oxidation method

Abstract

The invention discloses a hydrogen peroxide producing efficient oxidation method. The hydrogen peroxide producing efficient oxidation method comprises the following steps: firstly, introducing hydrogenating liquid and oxygen-containing gas together into a high-pressure gas dissolving system, and dissolving most of the oxygen-containing gas into the hydrogenating liquid; secondly, introducing a material into an atomizer, and fully atomizing working liquid / hydrogen into micron-sized droplets; performing efficient oxidation on the atomized droplets in an oxidation reactor; and performing gas-liquid separation on the completely oxidized material, wherein oxidized liquid enters the next process. In the hydrogen peroxide oxidation process, the high-pressure gas dissolving system, a micron-grade atomizing system and a quick reaction system are used; the process technology is advanced; the stay time for achieving complete oxidation of the material in the reactor is short, only 1 / 5 of the stay time in the prior art, so that oxidation side reactions are few, decomposition of hydrogen peroxide is less, the oxidation efficiency is higher than or equal to 98%, and the oxidation yield is higher than or equal to 98%.

Description

technical field [0001] The invention relates to an oxidation method for producing hydrogen peroxide, in particular to an efficient oxidation method for producing hydrogen peroxide by anthraquinone method. Background technique [0002] The anthraquinone method is currently the main method for producing hydrogen peroxide. It uses 2-ethylanthraquinone (EAQ) as the working carrier, and heavy aromatics (Ar), trioctyl phosphate (TOP) or other components as the working solvent to prepare the working solvent. The hydrogen peroxide product is obtained through anthraquinone hydrogenation, hydrogen anthraquinone oxidation, pure water extraction and working fluid post-treatment. The hydrogen anthraquinone oxidation process is an automatic oxidation reaction between the working liquid containing hydrogen anthraquinone and the oxygen-containing gas in the oxidation tower. The reaction process is carried out between a large amount of air and the hydrogenation liquid, and the gas-liquid two...

AI Technical Summary

Problems solved by technology

There are several problems in the current oxidation process: (1) The oxidation reaction is an automatic oxidation reaction, and the complete oxidation reaction takes a long time, resulting in the decomposition of hydrogen peroxide and many side reactions; (2) During the oxidation reaction, the air The air bubbles will gradually grow and the gravity of the material will cause the back-mixing of the air and the hydrogenated liquid to cause insufficient contact, and the oxidation yield will be low

[0005] But in fact, as the oxidation reaction proceeds, micron-sized bubbles will quickly grow into large bubbles. On the one hand, the oxidation rate is greatly reduced, and on the other hand, the tail oxygen content is high, which poses a safety hazard; the formation of micron-sized bubbles involved The microporous membranes, microporous sieve plates, and micron-scale channels used in the process require high investment and are not suitable for large-scale industrial applications.

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