Micro-interface enhanced oxidation system and method for preparing hydrogen peroxide

A hydrogen peroxide and interface technology, applied in peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of low oxygen utilization rate, air and hydrogenation Anthraquinone cannot be fully mixed, the product yield is low, etc., to achieve the effect of simple operation, improved application area, and high purity

Active Publication Date: 2021-10-08
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a micro-interface enhanced oxidation system for the preparation of hydrogen peroxide, the micro-interface enhanced oxidation system by setting a mixed micro-interface inside the oxidation reaction tower The unit makes the air broken into microbubbles before the oxidation reaction between the air and th

Method used

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  • Micro-interface enhanced oxidation system and method for preparing hydrogen peroxide

Examples

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Example Embodiment

[0054] Example

[0055] See figure 1 As shown, the micro-surface strong oxidation system for the preparation of hydrogen peroxide is prepared in the embodiment of the present invention, which mainly includes an oxidation reaction column 1, and a mixed micro-interface unit 13 disposed inside the oxidation reaction column 1, mainly hydrogenation in the oxidation reaction column 1. The oxidation reaction of anthraquinone and air is produced to produce hydrogen peroxide. In order to improve the oxidation effect, each side of the inner wall of the oxidation reaction column is provided with a grille 14, and the grid 14 is symmetrical.

[0056] The mixing micro-interface unit 13 of this embodiment includes a connecting micro-interface generator 131 and a lower micro-interface generator 132 that connects up and down, the upper micro interface generator 131, and the lower micro interface generator 132. A gas-liquid emulsion passage 133 is provided, and the gas-liquid emulsion passage 133 i...

Example Embodiment

[0070] Example 2

[0071] Other operation steps were consistent with Example 1, only oxidation heating constant temperature of 45 ° C, and the oxidation reaction column 1 reaction pressure was 0.25 MPa, analysis results: the conversion of hydride is 96.5%, and the utilization of oxygen is 96.5%.

Example Embodiment

[0072] Example 3

[0073] Other operation steps were consistent with Example 1, only oxidation heating constant temperature of 55 ° C, and the oxidation reaction column 1 reaction pressure was 0.35 MPa, analysis results: the conversion of hydride is 96.5%, and the utilization of oxygen is 96.5%.

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Abstract

The invention provides a micro-interface enhanced oxidation system and method for preparing hydrogen peroxide. The micro-interface enhanced oxidation system comprises an oxidation reaction tower, wherein a liquid phase pipeline for conveying hydrogenated anthraquinone is arranged at the top of the side surface of the oxidation reaction tower, and a gas phase pipeline for conveying air is arranged at the bottom of the side surface of the oxidation reaction tower; a liquid distributor, a filler section, a liquid receiving disc and a mixed micro-interface unit are sequentially arranged in the oxidation reaction tower from top to bottom; and the mixed micro-interface unit comprises an upper micro-interface generator and a lower micro-interface generator which communicate with each other along a vertical direction, hydroanthraquinone is conveyed into the mixed micro-interface unit, is distributed by the liquid distributor, sequentially descends and then is mixed, dispersed and crushed with air in the mixed micro-interface unit. By adopting the micro-interface enhanced oxidation system, the utilization rate of oxygen can be increased, an occupied area is small, and operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of hydrogen peroxide preparation, in particular to a micro-interface enhanced oxidation system and an oxidation method for preparing hydrogen peroxide. Background technique [0002] Hydrogen peroxide is hydrogen peroxide (H 2 o 2 ) aqueous solution is an important inorganic peroxide, which has the characteristics of oxidation, bleaching and environmental protection during use, and can be applied to fabrics, pulp decolorization, chemical synthesis, wastewater treatment, medical treatment, metallurgy, military industry, food processing And other fields, act as oxidizing agent, bleaching agent, disinfectant, polymer initiator and crosslinking agent, propellant, etc. With the increasingly stringent environmental protection regulations, the production capacity of propylene oxide, green caprolactam and other products by hydrogen peroxide direct oxidation (HPPO method) has increased, resulting in H 2 o 2 The market deman...

Claims

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Application Information

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IPC IPC(8): C01B15/023B01J8/00
CPCC01B15/023B01J8/008
Inventor 张志炳孟为民周政王宝荣杨高东罗华勋张锋李磊杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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