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Preparation method of chlorine dioxide

A chlorine dioxide and activator technology, applied in the direction of chlorine dioxide, chlorine oxide, etc., can solve the problems of losing the superiority of chlorine dioxide in treating tap water, high price, and drug failure, and achieves simple structure, convenient operation, and prevention of emission Effect

Active Publication Date: 2016-06-22
山东华实药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet because both adopt chlorite as raw material, its price is more expensive, and the product of hydrochloric acid and sodium chlorite reaction contains chlorine gas by-product, can produce trichloromethane poisonous substance in the process of processing tap water, thereby loses dichloride. Advantages of Chlorine Oxidation in Treating Tap Water
If the medicament formula is activated by adding water, there will be chlorine dioxide gas overflowing and diffusing in the air, which will not only cause waste, but also have an unbearable pungent smell. In the resulting chlorine dioxide solution product, it also contains toxic substances such as residual chlorite. Chlorite will react with acidic salts during storage and cause the agent to fail

Method used

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  • Preparation method of chlorine dioxide

Examples

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Effect test

Embodiment 1

[0019] Embodiment 1 prepares chlorine dioxide solution

[0020] use figure 1 The chlorine dioxide reaction apparatus shown prepares chlorine dioxide solution. The raw materials in the kit 5 are powdery, containing: 12.06g (0.11mol) of sodium chlorate, 4.41g (0.049mol) of oxalic acid dihydrate, 5.28g (0.044mol) of sodium bisulfate, 24.4g (0.044mol) of anhydrous calcium chloride ( 0.22mol).

[0021] Follow the steps below:

[0022] Step 1: Unload the outlet tap 12 of the chlorine dioxide absorption bottle 3 or open the bottle cap of the chlorine dioxide absorption bottle 3, and add 1L of tap water to it to ensure that the liquid level is higher than the second conduit 10 in the chlorine dioxide absorption bottle 3 And the conduit port of the first water outlet tap 12, but lower than the conduit port of the third conduit 11 above the medicine box 5, preventing water from flowing backwards. Usually, the mass ratio of the chlorate in the kit 5 to the water added in the absorpti...

Embodiment 2

[0029] Embodiment 2 prepares chlorine dioxide solution

[0030] Chlorine dioxide is prepared according to the same method in Example 1, but the raw materials in the kit 5 are different, and the raw materials contain: potassium chlorate 12.25g (0.1mol), oxalic acid 10.8g (0.12mol), potassium pyrosulfate 40.7g ( 0.16mol), 5.33g (0.04mol) of anhydrous aluminum chloride.

[0031] After reacting for 12 minutes, the absorption solution in the absorption bottle 3 was taken for inspection, and the chlorine dioxide concentration recorded was 438ppm, and the chlorine gas concentration was 26ppm.

Embodiment 3

[0032] Embodiment 3 prepares chlorine dioxide solution

[0033]Chlorine dioxide is prepared according to the same method in Example 1, but the raw materials in the kit 5 are different, and the raw materials contain: sodium chlorate 10.64g (0.1mol), sodium sulfite 12.6g (0.1mol), oxalic acid 9.0g ( 0.1mol), anhydrous magnesium chloride 9.5g (0.1mol).

[0034] After reacting for 12 minutes, the absorption solution in the absorption bottle 3 was taken for inspection, and the chlorine dioxide concentration recorded was 316 ppm, and the chlorine gas concentration was 32 ppm.

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Abstract

The invention discloses a preparation method of chlorine dioxide. The preparation method comprises the following steps of dropwise adding water in a mixture of chlorate, an acidic substance, an activating agent and a reducing agent, and reacting, thus obtaining the chlorine dioxide, wherein the reducing agent is sodium sulphite, potassium sulphite, oxalic acid, sodium oxalate, potassium oxalate or urea, the acidic substance for providing an acid environment is sodium hydrogen sulphate, potassium hydrogen sulphate, calcium hydrogen sulphate, sodium pyrosulphate, potassium pyrosulphate, the oxalic acid, citric acid or tartaric acid, and the activating agent is anhydrous calcium sulphate, anhydrous calcium chloride, anhydrous aluminium sulphate, anhydrous aluminium chloride, anhydrous ferric sulphate, anhydrous ferric chloride, anhydrous magnesium chloride or anhydrous magnesium sulphate. The preparation method of the chlorine dioxide, disclosed by the invention, is high is security, low in cost, less in loss of the chlorine dioxide and simple in operation.

Description

technical field [0001] The invention relates to a preparation method of chlorine dioxide, in particular to a method for preparing chlorine dioxide by using chlorate, reducing agent, acid and activator. Background technique [0002] Chlorine dioxide contains unpaired electrons, its chemical properties are active, and it has the functions of sterilization, deodorization, bleaching, and freshness preservation. As a water treatment agent, it can be used in tap water, swimming pools, hospitals and chemical plant sewage treatment, etc.; as a sterilization, disinfection and preservative, it can be used in catering, food preservation, medical rescue, and breeding fields; Indoor, cold storage, refrigerator and other deodorization to improve air quality; in addition, chlorine dioxide can also be used for pulp bleaching. [0003] At present, the research and development of chlorine dioxide generators and pharmaceutical formulations have also attracted much attention. The conventional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/02
CPCC01B11/023
Inventor 张旭刘庆初世敬
Owner 山东华实药业有限公司
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