Method for synchronously synthesizing hydrogen peroxide and peroxyacetic acid

A technology of peracetic acid and hydrogen peroxide, applied in the direction of peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, preparation of peroxygen compounds, chemical instruments and methods, etc., can solve the problem of corrosion Equipment corrosion resistance requirements and other issues, to achieve the effect of small corrosion, low content, simple synthesis process

Active Publication Date: 2012-08-01
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reaction aid can promote the generation of peroxygen bonds and inhibit the breaking of peroxygen bonds, but the disad

Method used

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  • Method for synchronously synthesizing hydrogen peroxide and peroxyacetic acid
  • Method for synchronously synthesizing hydrogen peroxide and peroxyacetic acid
  • Method for synchronously synthesizing hydrogen peroxide and peroxyacetic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0031] In the mixed solvent that synthetic reaction adopts, the mass ratio of ethanol, acetic acid and water is 60: 12: 28, and phosphoric acid content is 0.0050%, adds sodium bromide to make Br in the system - The content is 0.0100%, and the above mixed solvent and palladium catalyst (the mass ratio of mixed solvent and catalyst is 80:1) are added into the reactor, and the mass fraction of palladium in the catalyst is 5%. The reaction temperature is controlled at -20° C., the reaction pressure is controlled at 1 MPa, and the intake ratio of hydrogen and oxygen is 5:95 (volume ratio under standard conditions). Continuously react for 128h on the device shown in the accompanying drawing. After testing, the mass fraction of hydrogen peroxide in the mixed solution was 15.2%, and the mass fraction of peracetic acid was 8.2%.

Embodiment 2

[0033] In the mixed solvent that synthetic reaction adopts, the mass ratio of ethanol, acetic acid and water is 95: 0.5: 4.5, and phosphoric acid mass fraction is 0.0900%, adds hydrogen bromide to make Br - The mass fraction is 0.0005%, and the above-mentioned mixed solvent and palladium catalyst (the mass ratio of the mixed solvent and the catalyst is 100:1) are added into the reactor, and the mass fraction of palladium in the catalyst is 2.5%. The reaction temperature is controlled at 10° C., the reaction pressure is controlled at 20 MPa, and the intake ratio of hydrogen and oxygen is 40:60 (volume ratio under standard conditions). in the attached figure 1 The continuous reaction on the device shown was 128h. After testing, the content of hydrogen peroxide in the mixed liquid product is 14.1%, and the content of peracetic acid is 3.1%.

Embodiment 3

[0035] In the mixed solvent used in the synthesis reaction, the mass ratio of ethanol, acetic acid and water is 80:8:12, the mass fraction of phosphoric acid is 0.0600%, the Br -The mass fraction is 0.0050%, and the above mixed solvent and palladium catalyst (the mass ratio of the mixed solvent to the catalyst is 80:1) are added into the reactor, and the mass fraction of palladium in the catalyst is 5%. The reaction temperature is controlled at -10° C., the reaction pressure is controlled at 10 MPa, and the intake ratio of hydrogen and oxygen is 20:80 (volume ratio under standard conditions). in the attached figure 1 The continuous reaction on the device shown was 224h. After testing, the mass fraction of hydrogen peroxide in the mixed solution was 15.4%, and the mass fraction of peracetic acid was 7.1%.

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Abstract

The invention discloses a method for synchronously synthesizing hydrogen peroxide and peroxyacetic acid, wherein, hydrogen and oxygen are taken as gas sources, alcohol, water and acetic acid are taken as reaction solvent, and phosphoric acid and salt or acid which can generate Br- after being dissolved are taken as reaction assistants; and hydrogen peroxide and peroxyacetic acid can be synthesized synchronously under the conditions that the pressure ranges from 1 to 20 MPa and the temperature ranges from minus 20 to 15 DEG C. The mixed solution that is prepared according to the method can be used as raw material for preparing compound disinfectant and bleaching agents and can also be used as intermediates for other chemical synthesis.

Description

technical field [0001] The invention relates to a method for synchronously synthesizing hydrogen peroxide and peracetic acid. Background technique [0002] At present, the synthesis method of industrial hydrogen peroxide is mainly anthraquinone cyclic hydrooxidation method (referred to as anthraquinone method). Its main process: the working solution containing anthraquinone and tetrahydroanthraquinone undergoes hydrogenation reaction in the presence of a catalyst, the hydrogenated working solution enters the oxidation tower, and is oxidized with compressed air, and the oxidized working solution enters the extraction tower for extraction. Hydrogen peroxide is extracted with deionized water, and the working solution flowing out of the extraction tower undergoes a series of treatments before hydrogenation. The aqueous hydrogen peroxide solution obtained from the extraction tower generally contains more impurities and needs to be purified. The entire process includes hydrogenat...

Claims

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Application Information

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IPC IPC(8): C01B15/029C07C409/26C07C407/00
Inventor 寇志豪张明风张俊岳春波柴春玲韩忠诚杨海凌
Owner LIMING RES INST OF CHEM IND
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