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Multi-component all-acid fixed bed hydrogen peroxide production process

A production process, hydrogen peroxide technology, applied in the direction of peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, non-metallic elements, etc. Reactor, easy precipitation of hydroanthraquinone and other problems, to achieve the effect of reducing material consumption, improving filtration accuracy, and improving product purity

Pending Publication Date: 2021-03-16
PINGHU PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in this method, such as rapid growth of micron-sized bubbles, high tail oxygen content, large number of microreactors, high investment, easy precipitation of hydroanthraquinone and blockage of microreactors, etc.

Method used

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  • Multi-component all-acid fixed bed hydrogen peroxide production process
  • Multi-component all-acid fixed bed hydrogen peroxide production process
  • Multi-component all-acid fixed bed hydrogen peroxide production process

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A multi-component fully acidic fixed-bed hydrogen peroxide production process, the process flow chart is as follows figure 1 As shown, the specific steps are:

[0031] 1. Use the mixture of trioctyl phosphate (TOP), tetrabutylurea (TBU) and heavy aromatics (AR) as the carrier solvent, and 2-ethylanthraquinone (EAQ) as the carrier to prepare the working solution (900m 3 / h). During the reaction, control the volume ratio of trioctyl phosphate, tetrabutylurea, and heavy aromatics within the range of 10-15:10-15:70-75, and make the concentration of 2-ethylanthraquinone in the working solution It is 140-165g / L.

[0032] The working fluid is pumped and mixed with hydrogen (5000Nm 3 / h) enter the hydrogenation tower together, and carry out hydrogenation under the action of a palladium-gold catalyst to generate a hydrogenation liquid,

[0033] 2. Phosphoric acid is added to the hydrogenation solution to adjust the pH to about 3.5. After the hydrogenation solution and phosp...

Embodiment 2

[0037] A multi-component fully acidic fixed-bed hydrogen peroxide production process, the specific steps are:

[0038] The working solution (950m 3 / h), in the reaction process, control the volume ratio of trioctyl phosphate, tetrabutylurea, and heavy aromatics in the scope of 10-15:10-15:70-75, and make 2-ethylanthraquinone work The concentration in the liquid is 140-165g / L.

[0039] The working fluid is pumped and mixed with hydrogen (5200Nm 3 / h) together under the action of palladium-gold catalyst to generate hydrogenation solution, add phosphoric acid to the hydrogenation solution to adjust the pH to about 3.5, mix with phosphoric acid and pass the hydrogenation solution delivery pump (960m 3 / h) into the oxidation tower and air (34000Nm 3 / h) co-current reaction to generate oxidation liquid, through the oxidation liquid pump (950m 3 / h) is transported to the bottom of the extraction tower, and the pure water is acidified to obtain acid pure water (21m3 / h) into the u...

Embodiment 3

[0041] A multi-component fully acidic fixed-bed hydrogen peroxide production process, the specific steps are:

[0042] The working solution (1000m 3 / h), the working fluid is pumped with hydrogen (5500Nm 3 / h) together under the action of palladium-gold catalyst to generate hydrogenation solution, add phosphoric acid to the hydrogenation solution to adjust the pH to about 3.5, mix with phosphoric acid and pass the hydrogenation solution delivery pump (1000m 3 / h) into the oxidation tower and air (36000Nm 3 / h) co-current reaction to generate oxidation liquid, through the oxidation liquid pump (1000m 3 / h) is transported to the bottom of the extraction tower, and the pure water is acid-pure water (25m 3 / h) into the upper part of the extraction tower, countercurrent extraction with the oxidizing liquid entering the bottom of the tower to generate hydrogen peroxide (extraction liquid 28m 3 / h) Enter the purification tower, carry out liquid-liquid extraction with the heavy ar...

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Abstract

The invention relates to a multi-component all-acid fixed bed hydrogen peroxide production process which comprises the following steps: (1) in a hydrogenation tower, carrying out hydrogenation reaction on raw material hydrogen and a carrier anthraquinone under the action of a palladium-gold catalyst to generate a hydroanthraquinone hydrogenation solution; (2) adding phosphoric acid into the hydroanthraquinone hydrogenation solution to adjust the pH value to 3.5 + / -0.2, and reacting with oxygen in the air to obtain an oxidation liquid; and (3) taking pure water as an extraction agent, carryingout countercurrent extraction in an extraction tower to obtain an extraction solution containing hydrogen peroxide, and then purifying with heavy aromatics in a purification tower to obtain a qualified hydrogen peroxide product. According to the production process, a full-acid fixed bed process technology is adopted, balanced regeneration of a working solution system is optimally controlled, partial aluminum peroxide adsorption regeneration is adopted, dust entrainment is reduced, meanwhile, the filtering precision is improved, dust and salt entrainment in a product is greatly reduced, and indexes such as free acid, organic carbon and non-volatile matter are far away; and the product purity is superior to the national standard and companies.

Description

technical field [0001] The invention relates to a hydrogen peroxide production process, in particular to a multi-component fully acidic fixed-bed hydrogen peroxide production process, which belongs to the technical field of chemical production. Background technique [0002] The current production process of hydrogen peroxide is mainly the anthraquinone method. The fixed bed hydrogen peroxide production process of the anthraquinone method uses 2-ethylanthraquinone as the working carrier, and aromatic hydrocarbons, trioctyl phosphate, and tetrabutylurea as solvents. Proportionally formulated as a working fluid, the working fluid is hydrogenated with hydrogen in a fixed bed at a certain temperature and pressure under the catalytic action of a palladium catalyst, and the hydrogenated fluid is then oxidized with oxygen in the air to obtain the oxidized The liquid is extracted and purified with pure water to obtain the finished hydrogen peroxide, and the working liquid is recycled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 杨卫东钱立堂高军范昌海陈国峰亓虎李陈想刘其祥奚桢浩
Owner PINGHU PETROCHEM
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