Method of removing organic impurities in hydrogen peroxide

A technology for hydrogen peroxide and organic impurities, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of short service life, energy Consumption and other problems, to achieve the effect of reducing energy consumption, saving investment, and saving costs

Active Publication Date: 2013-06-12
上海睿思化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The service life of the resin is short, usually 1 to 2 years; the regenerant methanol must be rectified before it can be reused, so the energy consumption is relatively large

Method used

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  • Method of removing organic impurities in hydrogen peroxide
  • Method of removing organic impurities in hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 , the temperature is 30℃ and the flow rate is 5m 3 / h organic impurity content is 350ppm hydrogen peroxide aqueous solution 5 and flow rate is 3m 3 / h solvent trimethylene 6 enters the static mixer 1 at the same time for strong mixing. The mixing time is less than 1min, the temperature is 30°C, and the pressure is 0.3MPa;

[0039] Then the mixture of the two first enters the first filter 2 with a filtration accuracy of 5 microns to remove the solid particles, the filtration temperature is 30 ° C, and the pressure is less than or equal to 0.3 MPa;

[0040] After filtering, it enters the coalescer group 3, and through collision, coalescence, sedimentation, and separation, the separated solvent 7 containing organic impurities flows out from the top, and the aqueous hydrogen peroxide solution flows out from the bottom into the second filter 4. Coalescer group 3 consists of two coalescers connected in series. The coalescing packing in each coalescer is made ...

Embodiment 2

[0043] see figure 1 , the temperature is 20℃ and the flow rate is 3m 3 / h organic impurity content is 350ppm hydrogen peroxide aqueous solution 5 and flow rate is 3m 3 / h solvent trimethylene 6 enters the static mixer 1 at the same time for strong mixing. The mixing time is less than 1min, the temperature is 20°C, and the pressure is 0.3MPa;

[0044] Then the mixture of the two first enters the first filter 2 with a filtration accuracy of 5 microns to remove the solid particles, the filtration temperature is 20°C, and the pressure is less than or equal to 0.3MPa;

[0045] After filtering, it enters the coalescer group 3, and through collision, coalescence, sedimentation, and separation, the separated solvent 7 containing organic impurities flows out from the top, and the aqueous hydrogen peroxide solution flows out from the bottom into the second filter 4. Coalescer group 3 consists of two coalescers connected in series. The material of the coalescing packing in each coale...

Embodiment 3

[0048] see figure 1 , the temperature is 25℃ and the flow rate is 1m 3 / h organic impurity content is 350ppm hydrogen peroxide aqueous solution 5 and flow rate is 5m 3 / h The solvent mesitylene 6 enters the static mixer 1 at the same time for intensive mixing. The mixing time is less than 1min, the temperature is 25°C, and the pressure is 0.3MPa;

[0049] Then the mixture of the two first enters the first filter 2 with a filtration accuracy of 2 microns to remove the solid particles, the filtration temperature is 25 ° C, and the pressure is less than or equal to 0.3 MPa;

[0050] After filtering, it enters the coalescer group 3, and through collision, coalescence, sedimentation, and separation, the separated solvent 7 containing organic impurities flows out from the top, and the aqueous hydrogen peroxide solution flows out from the bottom into the second filter 4. The coalescer group 3 is composed of two coalescers in series, and the coalescing filler in each coalescer is m...

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Abstract

The invention relates to a hydrogen peroxide purification method in the process of preparing hydrogen peroxide by using an anthraquinone process. The method comprises the following steps: firstly, simultaneously feeding a hydrogen peroxide solution containing organic impurities and a solvent into a mixing device, and completely mixing; feeding the two-phase mixture into a first filter so as to remove solid particles in the two-phase mixture; then, feeding the two-phase mixture into a series-wound coalescer set so as to separate the hydrogen peroxide solution with the solvent containing organic impurities; and finally, feeding the separated hydrogen peroxide solution into a second filter so as to remove trace organic impurities in the hydrogen peroxide solution. In case of treating hydrogen peroxide solutions by using the method disclosed by the invention, the organic matter content of the hydrogen peroxide solutions can be significantly reduced.

Description

Technical field: [0001] The invention relates to a method for purifying hydrogen peroxide in the process of preparing hydrogen peroxide by anthraquinone method. Background technique: [0002] Hydrogen peroxide (hydrogen peroxide) is a versatile and versatile chemical. Oxidation or reduction may occur in different cases. It can be used as oxidizing agent, bleaching agent, disinfectant, dechlorination agent, can be used as rocket fuel, and can be used to produce organic or inorganic peroxide, foam plastic and other porous substances. At present, hydrogen peroxide as a strong oxidant has been widely used in pulp / paper bleaching, chemical synthesis, textile bleaching and dyeing, wastewater treatment, metal processing, microelectronics production, food packaging, medical care and cosmetics. [0003] There are many ways to prepare hydrogen peroxide, but the current method of producing hydrogen peroxide on a commercial scale mainly adopts the auto-oxidation (AO) method of circula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/013
Inventor 崔建华
Owner 上海睿思化工科技有限公司
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