Method for purifying hydrogen peroxide solution

A technology of hydrogen peroxide solution and purification method, which is applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., and can solve industrial-grade raw material adaptation To achieve the effect of effective removal of organic impurities, simple process and high safety

Inactive Publication Date: 2008-08-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of industrial hydrogen peroxide manufacturers, although they are basically produced by the anthraquinone method, the manufacturers' processes have their own characteristics, especially the different working solvents used, resulting in different types and contents of organic matter in industrial-grade hydrogen peroxide solutions. The big difference is that one of the adsorbents is used alone for the purification of hydrogen peroxide solution, and the adaptability to industrial-grade raw materials provided by different product suppliers is limited to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] With 50% industrial grade hydrogen peroxide solution 2000g, at 20 DEG C, adopt organic component loading type carbon sequestration adsorbent (I) (publication number is the preparation of the method described in Example 3 of the invention patent application of CN 101053821A) , the addition amount is 10g, stir slowly in the adsorption tank for a period of adsorption, the adsorption time is 3 hours, remove the adsorbent with a filter with industrial nylon filter cloth, import the second adsorption tank for the second stage of adsorption, add 6g of organic complex Compound-loaded activated carbon adsorbent (II) (the publication number is prepared by the method described in Example 3 of the patent application for invention of CN 101053820A) and 4g activated carbon adsorbent (III), slowly stirred, and the adsorption time was 3 hours, and then used with industrial Nylon cloth filter removes sorbent. The purified solution is cooled to 5°C, and the liquid space velocity (the mul...

Embodiment 2

[0024] Step is with embodiment 1. Treatment temperature is 10 DEG C, and one-stage adsorbent (I) addition is 16g, and second-stage adsorbent is (II) addition is 6g, and adsorbent (III) addition is 8g, and all the other are with embodiment 1.

Embodiment 3

[0026] Step is with embodiment 1. Treatment temperature is 30 DEG C, and one-stage adsorbent (I) addition is 6g, and second-stage adsorbent is (II) addition is 16g, and adsorbent (III) addition is 0g, and all the other are with embodiment 1.

[0027] The results obtained in the above Examples 1-3 are shown in Table 1.

[0028] Data in the table shows, by the processing of embodiment 1~3, the method that the present invention adopts can effectively purify industrial hydrogen peroxide solution, and Cl in anion - The content dropped from 3.29ppm to about 0.3ppm; NO3 - The content dropped from 34.74ppm to 0.8~0.902ppm; SO4 2- The content dropped from 54.29ppm to below 3.233ppm; PO4 3- The content dropped from 301.46ppm to less than 0.191ppm, meeting the requirements of chemical reagent grade products for anions. Cationic iron can be reduced below 21.92ppb, nickel below 2.82ppb, copper below 2.16ppb, and lead below 0.85, meeting the requirements of reagent grade. The TOC conte...

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Abstract

The present invention provides a method of purifying superoxol, including a preliminary purification obtained by two adsorbent absorption of the technical grade superoxol under the temperature of 10-30 Celsius, filtering, then food grade or chemical reagent grade superoxol obtained by desorption anion of the resin anion exchange bed under the temperature of 5-10 Celsius; or high purity superoxol solution obtained by purifying peroxide utilizing circulating ion exchange process of cation, anion, cation, cation, anion resin bed, then critically filtered to remove suspended solid. The adsorbent is set load type carbon chelated adsorbent, organic complex load type active carbon adsorbent and active carbon adsorbent respectively. The effect of purifying to common solvent grade product of the invention is equivalent to the normal reduced pressure distillation and the macroporous rosin adsorption process, but the method also has a simple process, lower energy consumption, lower cost, and the absorption segment processed in an opening system, high security and efficient removing organic matter impurity.

Description

technical field [0001] The invention relates to a method for purifying hydrogen peroxide solution, in particular to a method for preparing high-purity hydrogen peroxide solution, and in particular to a method for purifying industrial-grade hydrogen peroxide solution by combining chelation adsorption and ion exchange technology. Background technique [0002] At present, most of the industrial production of hydrogen peroxide adopts the anthraquinone method. The characteristics of the production process make industrial hydrogen peroxide inevitably contain various organic, metal and non-metal impurities, and the organic impurities mainly come from the introduced working solvent. And the soluble degradation products produced in the production process, mainly include heavy aromatics, trioctyl phosphate, anthraquinone and its derivatives, etc., usually with a content of more than 100mg / l in terms of total organic carbon (TOC). Inorganic impurities mainly come from the surface pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/013
Inventor 钱宇耿建铭林倩
Owner SOUTH CHINA UNIV OF TECH
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