Treatment method for continuous regeneration of hydrogen peroxide working solution produced by anthraquinone process

A technology of hydrogen peroxide and treatment methods, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of high consumption of raw materials, waste water Large quantity, high labor intensity and other problems, to achieve the effect of low raw material consumption, large processing capacity, and low labor intensity

Inactive Publication Date: 2010-11-24
江山市双氧水有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the production of hydrogen peroxide by the anthraquinone method, the working liquid is used as the working carrier of the alkyl anthraquinone, and after continuous hydrogenation and oxidation steps, the degraded impurities of the alkyl anthraquinone will inevitably be produced, thereby affecting the production efficiency
Intermittent alkali cleaning regeneration treatment is generally adopted for this. After the hydrogen peroxide working fluid is recycled, degradation products will be generated with complex components. During the hydrogenation oxidation process, anthrone, hydroxyanthrone, 2-ethylanthraquinone epoxide, etc. will be generat

Method used

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  • Treatment method for continuous regeneration of hydrogen peroxide working solution produced by anthraquinone process
  • Treatment method for continuous regeneration of hydrogen peroxide working solution produced by anthraquinone process
  • Treatment method for continuous regeneration of hydrogen peroxide working solution produced by anthraquinone process

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Embodiment 1

[0019] (1) Mix the working solution and the sodium hydroxide solution with a mass content of 15% according to the mass ratio of 5:1;

[0020] (2) The mixed solution of the working fluid and the lye enters the tubular reactor 1 for reaction, and the tubular reactor 1 is heated with steam, and the reaction temperature is controlled at 50-60° C.; the reaction time is 10 minutes;

[0021] (3) The mixed solution after the reaction is separated by the separator 2 to go out the working fluid; the lye separated by the separator 2 enters the above-mentioned step (1) to replace part of the lye for recycling, and the excess lye is used as waste water to process.

[0022] (4) The separated working fluid enters the water washing tower 3 and is washed by deionized water at 60° C., wherein the deionized water refers to water with a resistivity greater than 1 megohm.

[0023] (5) The working liquid after washing with deionized water enters the production system, and the washing liquid washed...

Embodiment 2

[0025] (1) Mix the working solution and the sodium hydroxide solution with a mass content of 8% according to the mass ratio of 3:1;

[0026] (2) The mixed solution of the working fluid and the lye enters the tubular reactor 1 for reaction, and the tubular reactor 1 is heated with steam, and the reaction temperature is controlled at 30-40° C.; the reaction time is 7 minutes;

[0027] (3) After the reaction, the mixed solution is separated from the working fluid by the separator 2; the lye separated by the separator 2 enters the above-mentioned step (1), and is used to replace part of the lye for recycling, and the excess lye is used as waste water to process.

[0028] (4) The separated working fluid enters the water washing tower 3 and is washed with deionized water at 50° C., wherein the deionized water refers to water with a resistivity greater than 1 megohm.

[0029] (5) The working liquid after washing with deionized water enters the production system, and the washing liqu...

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Abstract

The invention provides a treatment method for continuous regeneration of hydrogen peroxide working solution produced by an anthraquinone process. The method comprises the following steps of: mixing the working solution and alkaline liquor according to a ratio, making the mixture enter a tubular reactor for reaction, and separating the working solution from the reacted mixed solution by using a separator; washing the separated working solution by using heated deionized water, and making the working solution washed by the deionized water enter a production system. The alkaline liquor separated by the separator and the washing solution washed out by the deionized water are used for replacing partial alkaline liquor for recycling. The method realizes continuous alkaline washing regeneration treatment of the hydrogen peroxide working solution by the anthraquinone process, and has the advantages of good alkaline washing treatment effect on the working solution, high treatment capability, low consumption of raw materials, low wastewater amount, low labor intensity, and the like.

Description

technical field [0001] The invention relates to the continuous regeneration treatment technology of the working liquid in the production of hydrogen peroxide by anthraquinone method, in particular, it is a continuous regeneration treatment method of the working liquid in the production of hydrogen peroxide by anthraquinone method for preparing hydrogen peroxide. Background technique [0002] In the preparation of hydrogen peroxide, the anthraquinone process is currently widely used in the production of hydrogen peroxide. In this process, alkylanthraquinones dissolved in a solvent or solvent mixture (working solution) are first hydrogenated to alkylhydroanthraquinones in the presence of a hydrogenation catalyst (hydrogenation step). The alkylhydroanthraquinones are then oxidized to regenerate the original alkylanthraquinones with concomitant formation of hydrogen peroxide (oxidation step). Hydrogen peroxide is usually isolated extractively with water (extraction step), while...

Claims

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Application Information

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IPC IPC(8): C01B15/023
Inventor 徐振祥夏小明郑小华周怀国
Owner 江山市双氧水有限公司
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