Method for producing stable hypochlorous acid solution

A technology of hypochlorous acid solution and hypochlorite radicals, which is applied in the fields of hypochlorous acid, botanical equipment and methods, and chemicals for biological control, etc. The problem of high cost of use can achieve the effect of continuous automatic production, remarkable stability and low equipment requirements.

Active Publication Date: 2015-04-29
上海日洁环境科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The production of hypochlorous acid by electrolysis, such as: U.S. Pat. No. 5858201, not only consumes a large amount of electric energy, but also uses expensive noble metal electrodes that are easily damaged, making the production equipment costly and difficult to maintain. The most serious defect is: through The available chlorine content of the hypochlorous acid solution produced by electrolysis generally does not exceed 80mg/L, and the

Method used

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  • Method for producing stable hypochlorous acid solution
  • Method for producing stable hypochlorous acid solution

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Embodiment

[0028] Take the production of a hypochlorous acid solution with an available chlorine content of 200 mg / L (ie: C=2.8 mmol / L) and a pH value of 4.5 at room temperature as an example.

[0029] Known pK of acetic acid a It is 4.76, close to 4.5, and acetic acid and sodium acetate are all easy-to-get chemical raw materials, so select acetic acid / sodium acetate as the buffer system (so m=10 (pH-pKa) =10 (4 . 5-4 . 76) =10 -0 . 26 = 0.55).

[0030] Select sodium hypochlorite as the hypochlorite providing agent in this example, the concentration of commercially available sodium hypochlorite aqueous solution is generally 8-10%, can be used directly, but need confirm its accurate content before using, assume that its confirmed result is 10% (relative density) in this example 1.10, so C 1 =1.48mol / L).

[0031] Acetic acid can be mixed with water in any proportion, but it is solid at low temperature (≤16.7°C). In order to maintain its fluidity, in this example, a 10mol / L aqueo...

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Abstract

The invention discloses a method for producing stable a hypochlorous acid solution. According to the method, the hypochlorous acid solution is obtained by mixing and reacting raw water, an aqueous solution of hypochlorite ion provider, a weak acid aqueous solution with the pKa of 4.0-6.5 and a conjugate base aqueous solution of the weak acid aqueous solution according to the following quantitative ratio: Q1=C/C1.Q0; Q2>=C/C2.0.435(1+m)/m.Q0; Q3=m.C2/C3.Q2; m=10(pH-pKa). The method for producing the stable hypochlorous acid solution disclosed by the invention achieves the continuous automatic production of hypochlorous acid solution, and moreover, the hypocholorous acid solution produced according to the method has the storage stability of at least one year; and in addition, the method has the advantages of easy availability of the raw materials, low requirements for needed equipment, simple operation, greenness, environment protection and the like, and has industrial application value.

Description

technical field [0001] The invention relates to a production method of a hypochlorous acid solution, in particular to a method for producing a stable hypochlorous acid solution by a quantitative ratio method, and belongs to the technical field of disinfectant preparation. Background technique [0002] Hypochlorous acid (HClO) is a very active oxidizing agent. As early as more than 100 years ago, people have discovered that hypochlorous acid has a strong bactericidal effect. Hypochlorous acid is the core substance of the immune system of organisms. Dilute hypochlorous acid solution has a very efficient ability to kill microorganisms, and the use process is safe and pollution-free, so it is widely used in personal, family, medical, agricultural Disinfection, cleaning, nursing, etc. in various industries such as animal husbandry and breeding. [0003] Cl in the hypochlorous acid solution 2 , HClO, ClO - dynamic balance (see figure 1 shown), and many studies have shown that...

Claims

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Application Information

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IPC IPC(8): C01B11/04A01N59/00A01P1/00
CPCA01N59/00C01B11/04
Inventor 韩娟李利红
Owner 上海日洁环境科技有限公司
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