Method for preparing high-purity chlorine dioxide

A chlorine dioxide, high-purity technology, applied in chlorine oxide and other directions, can solve the problems of difficult treatment of industrial wastewater, large production equipment, and low product purity, and achieve the effects of eliminating adverse reactions, optimizing production links, and reducing environmental pollution.

Inactive Publication Date: 2015-09-09
湖北南五洲食品原料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects of low product purity, difficult industrial wastewater treatment, large production equipment and difficult storage and transportation in the prior art chlorine dioxide production method, and provide a convenient, fast and efficient chlorine dioxide production method without large equipment. Method for preparing high-purity chlorine dioxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method for preparing high-purity chlorine dioxide comprises the following steps:

[0032] 1) Prepare sodium chlorite and sodium sulfate, the weight ratio of the two is 1:4, then use a mixer to wrap sodium chlorite with sodium sulfate to obtain granular raw materials, and then use a molecular filter membrane with a pore size of ≤0.1 μm to seal and wrap the particles The raw materials are obtained in A package for later use; the molecular filter membrane with this pore size has water permeability and can prevent by-products and raw materials other than chlorine dioxide from passing through.

[0033] In this embodiment, the mixer is a commercially available ZK-V mixer manufactured by Shanghai Qiaofeng Mixer Equipment Factory.

[0034] 2) Mix citric acid and catalyst according to the weight ratio of 1:0.1, the catalyst is a mixture of aluminum trichloride and oxalic acid at 1:0.2, and then wrap it with a molecular filter membrane with a pore size≤0.1 μm to obtain B wrap...

Embodiment 2

[0039] The method for preparing high-purity chlorine dioxide comprises the following steps:

[0040] 1) Prepare sodium chlorite and sodium chlorite, the weight ratio of the two is 1:4, then use a mixer to wrap sodium chlorite with sodium chlorite to obtain granular raw materials, and then use a molecular filter membrane with a pore size of ≤0.1 μm to wrap For granular raw materials, get A package for later use; the molecular filter membrane with this pore size has water permeability, and can prevent by-products and raw materials other than chlorine dioxide from passing through.

[0041] In this embodiment, the mixer is a commercially available ZK-V mixer manufactured by Shanghai Qiaofeng Mixer Equipment Factory.

[0042] 2) Mix citric acid and aluminum trichloride according to the weight ratio of 1:0.05, then seal and wrap with a molecular filter membrane with a pore size of ≤0.1 μm to obtain B wrapping for later use;

[0043] 3) Package B is put into package A, and then pack...

Embodiment 3

[0047] The method for preparing high-purity chlorine dioxide comprises the following steps:

[0048] 1) Prepare sodium chlorite and sodium sulfate with a weight ratio of 1:5, then use a mixer to wrap sodium chlorite with sodium sulfate to obtain granular raw materials, and then use a molecular filter membrane with a pore size of ≤0.1 μm to seal and wrap the particles The raw materials are obtained in A package for later use; the molecular filter membrane with this pore size has water permeability and can prevent by-products and raw materials other than chlorine dioxide from passing through.

[0049] In this embodiment, the mixer is a commercially available ZK-V mixer manufactured by Shanghai Qiaofeng Mixer Equipment Factory.

[0050] 2) Mix citric acid and catalyst according to the weight ratio of 1:0.08, the catalyst is a 1:1 mixture of boric acid and oxalic acid, and then wrap it with a molecular filter membrane with a pore size≤0.1 μm to obtain B wrapping for subsequent use...

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Abstract

The invention discloses a method for preparing high-purity chlorine dioxide. The method comprises mixing sodium chlorite and a mixing agent so that sodium chlorite is coated with the mixing agent to form raw material particles, coating the raw material particles with molecular filter membranes to obtain a coated material A for next use, mixing citric acid and a mixing agent, coating the mixture with molecular filter membranes to obtain a coated material B for next use, sealing the coated material A and the coated material B in a raw material bag, and putting the raw material bag into water so that the high-purity chlorine dioxide is obtained. The produced chlorine dioxide solution has purity of 99.99%, eliminates adverse effects caused by chlorine dioxide solution residual substances in the disinfection liquid use, is safe and reliable, realizes chlorine dioxide gas storage and transport, realizes on-site preparation, has good on-site usage effects and fills a gap in the field of direct disinfection of air in a space.

Description

technical field [0001] The invention relates to the technical field of chlorine dioxide preparation, in particular to a method for preparing high-purity chlorine dioxide. Background technique [0002] Chlorine dioxide (ClO 2 ) is a yellow-green to orange-yellow gas, which is internationally recognized as a safe and non-toxic green disinfectant. Chlorine dioxide has a broad spectrum and can efficiently kill viruses, bacteria, protozoa, algae, fungi, and various spores and spore-forming bacteria. The dosage is very small, and all bacterial propagules and spores can be killed at 0.1ppm. Many pathogenic bacteria, 50ppm can completely kill bacterial propagules, hepatitis viruses, phages and bacterial spores. [0003] There are many defects in the chlorine dioxide production method of prior art: [0004] 1. The raw materials used are dangerous goods such as sulfuric acid, hydrochloric acid, and chlorine; [0005] 2. The purity of chlorine dioxide gas produced is not enough, ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/02
Inventor 郭峰陈小莉肖阳朋
Owner 湖北南五洲食品原料有限公司
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