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Production method of medical hydrogen peroxide

A production method and hydrogen peroxide technology, applied in the field of fine chemicals, can solve the problems of low added value of hydrogen, and achieve the effects of low production cost and simple process flow

Pending Publication Date: 2022-06-07
CHEM & CHEM ENG GUANGDONG LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrochemical method also has technical disadvantages, such as the low added value of hydrogen precipitated by the cathode of the bismuth vanadate method, and the anode of the oxygen cathode reduction method requires the use of precious metal platinum, etc.

Method used

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  • Production method of medical hydrogen peroxide
  • Production method of medical hydrogen peroxide

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: bismuth vanadate method of medical hydrogen peroxide production method

[0027]In the present embodiment, the electrolyzer and evaporator in the production equipment adopts the fusible PTFE PFA as the lining to avoid the introduction of impurities in the production of hydrogen peroxide, to ensure the stability of the product. The electrolyzer uses bismuth-doped vanadate monocrystalline as the anode material, nickel-based alloy as cathode material, and the cathode and anode are isolated by a proton exchange membrane. The evaporator uses a falling film evaporator. The applied bias voltage is 2.6V and the current density during electrolysis is 0.15A / cm 2 。

[0028] The present embodiment of the process flow such as Figure 1 As shown, the raw material is made of pure water 111 (in line with the analytical laboratory water GB / T6682-2008 tertiary water: conductivity ≤0.5mS / m, evaporation residue ≤2ppm); Electrolyte 112 is Na 2 CO 3 (≥99.5%), composed of pure water 111 ...

Embodiment 2

[0030] Example 2: the use of bismuth vanadate method and oxygen cathodic reduction method combined with the production method of medical hydrogen peroxide

[0031] Based on the production equipment of Example 1, the present embodiment of the electrolyzer cathode is changed to a carbon-based material i.e., graphite / carbon black / PTFE composite, and the applied bias voltage is reduced to 2.5V, the current density at the time of electrolysis is 0.3A / cm 2 ； The incoming raw material oxygen is the purity of the oxygen production mechanism≥ 90% cheap oxygen.

[0032] as Figure 2As shown, the electrolyte flows through the electrolytic cell to undergo an electrolytic reaction, the incoming oxygen 213 in the cathode oxygen reduction reaction to obtain hydrogen peroxide, the anode occurs two electrons water oxidation reaction also to obtain hydrogen peroxide; When the hydrogen peroxide concentration reaches 3wt%, the electrolyte 114 containing hydrogen peroxide in the cathode chamber a...

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Abstract

The invention discloses a medical hydrogen peroxide production method which comprises the following steps: preparing hydrogen peroxide by adopting pure water and oxygen as raw materials through an electrolysis process, and when the concentration of hydrogen peroxide reaches 1-3wt%, carrying out evaporation process treatment on an electrolyte containing hydrogen peroxide in the electrolysis process to prepare medical hydrogen peroxide with the concentration of less than or equal to 3wt%. The method has the beneficial effects that relatively low-cost high-purity water and high-purity oxygen are adopted as raw materials, the total organic carbon content in the prepared high-purity hydrogen peroxide can be ignored, inorganic impurities are efficiently removed through a mature evaporation process, and the high-quality medical hydrogen peroxide can be obtained; the method has the advantages of simple process flow, low production cost and potential industrial application value.

Description

Technical field [0001] The present invention relates to the field of fine chemicals, specifically an electrochemical production method of medical hydrogen peroxide. Background [0002] Hydrogen peroxide (aqueous hydrogen peroxide solution) is an important chemical raw material with clean and pollution-free characteristics, which is widely used in printing and dyeing, papermaking, environmental protection, food, medicine, chemical synthesis and semiconductor industries. The industrial production method of hydrogen peroxide is barium peroxide method, ammonium persulfate method, anthraquinone method, isopropanol method and oxygen cathodic reduction method. Among them, anthraquinone method is the mainstream industrial production method at home and abroad, and its total chemical reaction equation is H 2 +O 2 ＝H 2 O 2 Its advantages are mature technology, high degree of automation control, low raw material cost and energy consumption, suitable for large-scale production, its disadvanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/30C25B1/50C25B15/08
CPCC25B1/30C25B1/50C25B15/083C25B15/085Y02P20/54
Inventor 李国岭
Owner CHEM & CHEM ENG GUANGDONG LAB