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Method for preparing liquid chlorine dioxide disinfectant and device thereof

A chlorine dioxide and disinfectant technology, applied in the chemical industry, can solve the problems of high preparation cost and high price, and achieve the effects of reducing the preparation cost, reducing the amount of hydrochloric acid, and reducing the dosage

Active Publication Date: 2020-04-17
四川蒙顶山化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the production of liquid chlorine dioxide disinfectant by the preparation method, chlorine dioxide must be prepared by using the technical formula of the oxidation method, and the price of the oxidant raw material itself is very high by the oxidation method, which is higher than other preparation methods oxidant, and other oxidants cannot be substituted, so there are great limitations in process technology, and the high cost of preparation cannot be avoided at all.

Method used

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  • Method for preparing liquid chlorine dioxide disinfectant and device thereof
  • Method for preparing liquid chlorine dioxide disinfectant and device thereof
  • Method for preparing liquid chlorine dioxide disinfectant and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing a liquid chlorine dioxide disinfectant, comprising the steps of: preparing agent A and agent B respectively, adding the two together to a dosing device for activation reaction, and continuously aerating to produce high-purity, Highly active chlorine dioxide gas is sent to drinking water application sites through dosing equipment;

[0040] Wherein, agent A is sodium chlorite solution, agent B is a mixed solution of hydrochloric acid, including hydrochloric acid solution, accelerator I and accelerator II, accelerator I is citric acid, and accelerator II is oxalic acid.

[0041] In agent B, the mass ratio of hydrochloric acid to the sum of citric acid and oxalic acid is 1:0.255-0.5, and the mass ratio of citric acid and oxalic acid is 1:3.6-8.0; the reaction volume ratio of agent A and agent B is 1: 1.01 to 1.04, the temperature of the activation reaction is normal temperature, and the time of the activation reaction is 15 to 20 minutes.

Embodiment 2

[0043] In Example 1, agent B is preferably configured using the following device:

[0044] A preparation device for hydrochloric acid mixed solution, comprising hydrochloric acid dilution mixing tank 6 and the first hydrochloric acid mixer 3 and the second hydrochloric acid mixer 10 connected to it respectively, the first hydrochloric acid mixer 3 links to each other with accelerator 1 dissolution tank 2, the second Dihydrochloric acid mixer 10 links to each other with accelerator II dissolution tank 11;

[0045] The hydrochloric acid dilution mixing tank 6 is connected with the circulation pump 7, and the circulation pump 7 is respectively connected with the finished product tank 8, the first hydrochloric acid mixer 3, the accelerator I dissolution tank 2, the second hydrochloric acid mixer 10 and the accelerator II dissolution tank 11 through pipelines connected.

[0046] On hydrochloric acid dilution mixing tank 6, be provided with hydrochloric acid solution inlet 4 and wa...

Embodiment 3

[0050] Adopt the method for preparing the hydrochloric acid mixed solution of the preparation device of the hydrochloric acid mixed solution of embodiment 2, may further comprise the steps:

[0051] Step 1. Pour the hydrochloric acid into the hydrochloric acid dilution mixing tank 6 filled with water, and add citric acid, oxalic acid, and hydrochloric acid to the accelerator I dissolving tank 2 and the accelerator II dissolving tank 11 at a mass ratio of 1:3.6 to 8.0. The mass ratio to the sum of citric acid and oxalic acid is 1:0.255~0.5; close the first valve, the third valve and the fourth valve, open the second valve and the fifth valve, and fully mix under the action of the circulation pump 7 (about 30 minutes of mixing);

[0052] Step 2, open the third valve and the fourth valve, continue to fully mix (about 4 hours of mixing);

[0053] Step 3: After obtaining the hydrochloric acid mixed solution that meets the requirements, close the second valve, the third valve, the ...

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Abstract

The invention relates to a method for preparing a liquid chlorine dioxide disinfectant, which comprises the following steps: respectively preparing an agent A and an agent B, adding the agent A and the agent B into adding equipment for activation reaction, and continuously aerating to generate high-purity and high-activity chlorine dioxide gas which is sent to a drinking water application place through the adding equipment; wherein the agent A is a sodium chlorite solution, the agent B is a hydrochloric acid mixed solution and comprises a hydrochloric acid solution, an accelerant I and an accelerant II, the accelerant I is citric acid, and the accelerant II is oxalic acid. According to the method for preparing the liquid chlorine dioxide disinfectant, a new process formula of the agent B solution is utilized, reasonable proportioning is conducted, then the agent B solution is reasonably proportioned with the original agent A solution, and through activation operation, high-yield and high-purity chlorine dioxide gas can be prepared.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method and device for preparing liquid chlorine dioxide disinfectant. Background technique [0002] As a new generation of broad-spectrum powerful bactericidal disinfectant recognized internationally, chlorine dioxide has been widely used in the fields of drinking water disinfection, industrial circulating water and various wastewater treatment in society. Due to the rapid sterilization of chlorine dioxide, strong oxidizing ability, good effect, no residue and no side effects, it has also been recognized by more and more people under the current situation that the country and governments at all levels attach great importance to environmental protection. The most ideal cleaning and disinfecting agent has more and more application fields, especially in the field of drinking water and civilian fields. [0003] Chlorine dioxide preparation technology has a history of 30 years in C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/02C02F1/76
CPCC01B11/024C02F1/76Y02A50/30
Inventor 陈祥衡张小康高凯高克勇
Owner 四川蒙顶山化工有限公司
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