System and process for preparing hydrogen peroxide based on anthraquinone method

A technology of hydrogen peroxide and anthraquinone method, applied in peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, separation method, chemical instrument and method, etc., can solve the problem of low system reaction efficiency , to achieve the effect of ensuring the reaction rate, improving the hydrogenation efficiency and reducing the risk

Inactive Publication Date: 2021-03-16
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

[0009] Therefore, the present invention provides a system and process for preparing hydrogen peroxide based on the anthraquinone method to overcome the problem of low system reaction efficiency caused by inhomogeneous mixing of materials and by-products in the prior art

Method used

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  • System and process for preparing hydrogen peroxide based on anthraquinone method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0089] In the process, the reaction temperature in the hydrogenation tower is 38°C, the reaction pressure is 0.05MPa, the anthraquinone content is 220g / L, and the flow rate of the working fluid containing anthraquinone derivatives is 130h -1 , the gas-liquid ratio in the first micro-interface generator is 300:1.

[0090] In the process, the reaction temperature in the oxidation tower is 35°C, the reaction pressure is 0.10MPa, and the flow rate of the hydrogenation solution containing 2-ethylhydroanthraquinone is 140h -1 , the gas-liquid ratio in the second micro-interface generator is 400:1.

[0091] After testing, after using the system and process, the hydrogenation efficiency is 14.2g / L, the oxidation efficiency is 13.9g / L, and the conversion rate of oxidation reaction is 97.9%.

Embodiment 2

[0093] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0094] In the process, the reaction temperature in the hydrogenation tower is 39°C, the reaction pressure is 0.15MPa, the anthraquinone content is 235g / L, and the flow rate of the working fluid containing anthraquinone derivatives is 135h -1 , the gas-liquid ratio in the first micro-interface generator is 350:1.

[0095] In the process, the reaction temperature in the oxidation tower is 37°C, the reaction pressure is 0.13MPa, and the flow rate of the hydrogenation solution containing 2-ethylhydroanthraquinone is 145h -1 , the gas-liquid ratio in the second micro-interface generator is 420:1.

[0096] After testing, after using the system and process, the hydrogenation efficiency is 14.6g / L, the oxidation efficiency is 14.3g / L, and the conversion rate of the oxidation reaction is 97.9%.

Embodiment 3

[0098] Use above-mentioned system and process to carry out anthraquinone method to prepare hydrogen peroxide, wherein:

[0099] In the process, the reaction temperature in the hydrogenation tower is 42°C, the reaction pressure is 0.30MPa, the anthraquinone content is 245g / L, and the flow rate of the working fluid containing anthraquinone derivatives is 147h -1 , the gas-liquid ratio in the first micro-interface generator is 400:1.

[0100]In the process, the reaction temperature in the oxidation tower is 40°C, the reaction pressure is 0.15MPa, and the flow rate of the hydrogenation solution containing 2-ethylhydroanthraquinone is 152h -1 , the gas-liquid ratio in the second micro-interface generator is 450:1.

[0101] After testing, after using the system and process, the hydrogenation efficiency is 14.7g / L, the oxidation efficiency is 14.4g / L, and the conversion rate of the oxidation reaction is 98.0%.

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Abstract

The invention relates to a system and process for preparing hydrogen peroxide based on an anthraquinone method. The system comprises a hydrogenation tower, a micro-interface generator, a filtering andcooling unit, an oxidation tower and an extraction tower. Hydrogen is crushed to form micron-sized bubbles, and the micron-sized bubbles are mixed with an anthraquinone derivative-containing workingsolution or a 2-ethylanthraquinone-containing hydrogenated solution to form a gas-liquid emulsion, so that the phase interface area of a gas phase and a liquid phase is increased, the effect of enhancing mass transfer within a relatively low preset operation condition range is achieved, the hydrogenation and oxidation efficiency of the anthraquinone derivative-containing working solution is improved, the hydrogen reaction rate is improved, the cost is saved, and the risk is reduced. A mixture of 2-ethylanthraquinone and hydrogen peroxide is extracted through the extraction tower, countercurrent extraction is carried out on a water phase from top to bottom and the mixture from bottom to top, and rapid extraction is realized.

Description

technical field [0001] The invention relates to the technical field of anthraquinone method for preparing hydrogen peroxide, in particular to a system and process for preparing hydrogen peroxide based on anthraquinone method. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
CPCC01B15/023B01D47/02
Inventor 张志炳黄传峰周政张锋李磊孟为民王宝荣杨高东罗华勋杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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