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Preparation method of chlorine dioxide stabilized solution

A technology of chlorine dioxide and solution, which is applied in the fields of chemical industry, disinfection, sanitation and epidemic prevention. It can solve the problems of difficult control of the preparation process and unstable activation, and achieve the effects of avoiding uncertainty and safety problems, improving stability and being convenient to use

Active Publication Date: 2019-07-23
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the problem that the chlorine dioxide solution in the prior art is unstable after being passed into the stable absorption liquid and needs to be activated, and the problem that the preparation process is difficult to control, proposes a preparation method of the chlorine dioxide stable solution, the method prepares The chlorine dioxide stable solution does not need to be activated, the preparation process is simple, and the stability is high

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  • Preparation method of chlorine dioxide stabilized solution

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Embodiment approach 1

[0038] This embodiment discloses a chlorine dioxide stable solution, the preparation method of which is as follows: the chlorine dioxide solution prepared by sodium chlorate, sulfuric acid and hydrogen peroxide is passed into pure water at 4°C, and the chlorine dioxide solution in the chlorine dioxide solution is prepared. The concentration of chlorine oxide gas is 220mg / L, and chlorate and sodium chloride solid are added in the ratio of sodium chlorate:sodium chloride:chlorine dioxide=1:0.5:1 according to the amount of substance. Iron porphyrin according to the amount of substance: chlorine dioxide = 0.2: 1, add iron porphyrin, and use a pH adjuster (mixed by volume of citric acid: phosphoric acid = 1: 2) to add the solution formed by adding iron porphyrin The pH was adjusted to 2, and 5% sodium alkyl sulfate by volume of the solution formed after the pH adjustment was added to form a chlorine dioxide stable solution, which was put into a brown glass bottle with a threaded CPV...

Embodiment approach 2

[0040] This embodiment discloses a chlorine dioxide stable solution, the preparation method of which is as follows: the chlorine dioxide solution prepared by sodium chlorite and sulfuric acid is poured into pure water at 4°C to obtain chlorine dioxide in the chlorine dioxide solution. The gas concentration is 370mg / L, and chlorate and sodium chloride solid are added in the ratio of sodium chlorate:sodium chloride:chlorine dioxide=0.5:2:1 according to the amount of substance. Add iron porphyrin in the ratio of iron porphyrin: chlorine dioxide = 0.3: 1, and use a pH adjuster (mixed by volume ratio of tartaric acid: phosphoric acid = 1: 2) to adjust the pH of the solution formed after adding iron porphyrin Adjust to 2.5, add 5% sodium alkyl sulfonate by volume to form a solution after adjusting the pH to form a chlorine dioxide stable solution, and put it into a brown glass bottle with a threaded CPVC cap for preservation. According to the evaluation method of stability in "Disin...

Embodiment approach 3

[0042] This embodiment discloses a chlorine dioxide stable solution, the preparation method of which is as follows: the chlorine dioxide solution prepared by sodium chlorite and sulfuric acid is introduced into pure water at 6°C to obtain chlorine dioxide in the chlorine dioxide solution. The gas concentration is 580mg / L, and chlorate and sodium chloride solid are added in the ratio of sodium chlorate:sodium chloride:chlorine dioxide 2:0.5:1 according to the amount of substance. Add iron porphyrin in the ratio of iron porphyrin: chlorine dioxide = 0.4: 1, and use a pH adjuster (mixed by volume ratio of tartaric acid: phosphoric acid = 1: 2) to adjust the pH of the solution formed after adding iron porphyrin Adjust to 2.5, add 7% α-sulfofatty acid methyl ester by volume of the solution after adjusting the pH to form a chlorine dioxide stable solution, and put it into a brown glass bottle with a screw CPVC bottle cap for preservation. According to the evaluation method of stabil...

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Abstract

The invention relates to a preparation method of a chlorine dioxide stabilized solution, comprising the process of adding stable components composed of a balancing agent, a complexing agent, a pH regulator and a surfactant to a chlorine dioxide solution absorbing the components at low temperature of 4-11 DEG C. Based on the dissociation equilibrium of chlorine dioxide in water, the balancing agentcapable of dissociating H<+>, ClO<3-> and Cl<-> is added to inhibit the dissociation of chlorine dioxide in water and promote the equilibrium to move towards the formation of chlorine dioxide. The coordination of porphyrins and the anionic surfactant are used to effectively reduce the volatilization of chlorine dioxide, so that the stability of the chlorine dioxide solution is effectively enhanced, and the chlorine dioxide solution can be used conveniently without activation. The problems in the prior art of difficult preservation, poor stability, activation in use and inconvenient operationof chlorine dioxide are solved.

Description

[0001] Technical field: [0002] The invention belongs to the technical fields of chemical industry, disinfection, sanitation and epidemic prevention, and in particular relates to a preparation method of a chlorine dioxide stable solution. [0003] Background technique: [0004] Chlorine dioxide is extremely soluble in water, five times more soluble in water than chlorine gas. It is internationally recognized as a safe, non-toxic green disinfectant because of its strong oxidizing properties, broad-spectrum, high efficiency, safety, no residue, and no irritation to the human body. Chlorine dioxide can kill viruses, bacteria, protists, algae, fungi and various spore-formed cells. During the disinfection process, it is not greatly affected by temperature, and does not undergo chlorination reaction with organic matter, and does not produce "three consistency" Organic chlorides or other toxic substances that do not cause harm to humans and animals, and will not cause secondary poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/02
CPCC01B11/022
Inventor 吴明松刘宇鹤周秀艳王芷晴严翰辉周靖云
Owner 东北大学秦皇岛分校