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Method for purifying industrial hydrogen peroxide aqueous solution

A technology of hydrogen peroxide and aqueous solution, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve unseen problems, Achieve the effect of improving grade, low cost and realizing resource utilization

Inactive Publication Date: 2016-06-08
GUANGXI DONGXING DINGKANG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no research on the use of modified fly ash adsorption method coupled with vacuum distillation method for the purification of hydrogen peroxide aqueous solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 of the present invention: the method for purifying industrial hydrogen peroxide aqueous solution, the fly ash by-product of a certain power plant is cleaned with deionized water until the washing water does not change color, and is dried at 105° C. for 2 hours, and then placed and cooled for subsequent use; The concentration is 0.5g / L ammonium dihydrogen phosphate solution to soak the washed and dried fly ash for 24 hours, the ratio of solid to liquid is 1:100 (g / mL); Calcined for 0.5h, cooled and washed with deionized water until neutral, heated at 110°C for 2h to dry, cooled for later use;

[0021] Take 100mL of industrial hydrogen peroxide aqueous solution produced by anthraquinone method of a company, and its total organic carbon (TOC) is 126.6mg / L, add 1g of the above-mentioned modified fly ash, stir evenly, let it stand for 2 hours for adsorption, and centrifuge to obtain adsorption The hydrogen peroxide aqueous solution after adsorption; the hydrogen...

Embodiment 2

[0022] Embodiment 2 of the present invention: the method for purifying industrial hydrogen peroxide aqueous solution, the fly ash by-product of a certain power plant is cleaned with deionized water until the washing water does not change color, and is dried at 105° C. for 2 hours, and then placed and cooled for subsequent use; The concentration is 2g / L ammonium dihydrogen phosphate solution to soak the washed and dried fly ash for 24 hours, the ratio of solid to liquid is 10:100 (g / mL); the soaked fly ash is filtered and then calcined at 500°C 2h, after cooling, wash with deionized water until neutral, heat and dry at 105°C for 2h, cool for later use;

[0023] Take 100mL of industrial hydrogen peroxide aqueous solution produced by a company's anthraquinone method, whose total organic carbon (TOC) is 126.6mg / L, add 10g of the above-mentioned modified fly ash, stir evenly, let it stand for adsorption for 5h, and centrifuge to obtain adsorption The hydrogen peroxide aqueous solut...

Embodiment 3

[0024] Embodiment 3 of the present invention: the method for purifying industrial hydrogen peroxide aqueous solution, the fly ash by-product of a certain power plant is washed with deionized water until the water does not change color, heated at 105°C for 2h, then placed and cooled for subsequent use; the concentration is 5g Soak the cleaned fly ash in / L phosphoric acid solution for 24 hours, the ratio of solid to liquid is 30:100 (g / mL); filter the soaked fly ash, then calcinate it at 200°C for 2 hours, cool it and wash it with deionized water To neutral, heat and dry at 105°C for 2 hours, cool down for later use;

[0025] Take 100mL of industrial hydrogen peroxide aqueous solution produced by a company's anthraquinone method, whose total organic carbon (TOC) is 126.6mg / L, add 30g of the above-mentioned modified fly ash, stir evenly, let it stand for adsorption for 24 hours, and centrifuge to obtain adsorption The hydrogen peroxide aqueous solution after adsorption; the hydr...

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PUM

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Abstract

The invention discloses a method for purifying an industrial aqueous hydrogen peroxide solution. Organic matters in an industrial hydrogen peroxide solution are removed by using solid waste coal ash through modified coal ash adsorption, coupling and reduced-pressure distillation processes, so that total organic carbon in the industrial aqueous hydrogen peroxide solution produced by using an anthraquinone process can be removed at the removal rate of more than 40%, not only is the grade of the hydrogen peroxide solution increased, but also the additional value of hydrogen peroxide is increased, and the application range of industrial hydrogen peroxide is widened. The method has the advantages of simple process, low cost and environment friendliness, and is used for further recycling solid wastes so as to be very suitable for industrial production.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for purifying industrial hydrogen peroxide aqueous solution. Background technique [0002] At present, the production of hydrogen peroxide solution at home and abroad mostly adopts the anthraquinone method, because its production raw materials are anthraquinone organic compounds, plus the working fluid solvent and soluble degradation products produced in the production process, etc., resulting in the production of hydrogen peroxide The solution contains a large amount of organic matter. The existence of these organic matters affects the storage of hydrogen peroxide solution on the one hand, limits the application of hydrogen peroxide solution on food to a great extent on the other hand. Therefore, it is necessary to purify and purify it. [0003] Now the hydrogen peroxide solution purification process mainly includes rectification method, ion exchange resin method, mem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/013
Inventor 朱静李天祥陈海
Owner GUANGXI DONGXING DINGKANG PLASTIC IND