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Chlorine dioxide generator

A chlorine dioxide generator technology, applied in chlorine oxidation, chemistry, etc., can solve the problems of short reaction residence time, low conversion rate of raw materials, low purity of chlorine dioxide, etc., to improve conversion rate and product yield, The effect of reducing the content of active ingredients and facilitating storage, transportation and sales

Active Publication Date: 2006-04-26
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its biggest disadvantage is that the purity of chlorine dioxide is low and the conversion rate of sodium chlorate is low
However, this generator is a single-stage reactor, which has shortcomings such as short reaction residence time, insufficient reaction, and low conversion rate of raw materials.

Method used

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Embodiment 1

[0029] The preparation method of high-concentration and high-purity chlorine dioxide is as follows: sodium chlorate solution is used as an oxidizing agent, and 27% hydrogen peroxide solution is used as a reducing agent to react in 20% sulfuric acid medium. The proportion of raw materials entering NaClO 3 :H 2 o 2 :H 2 SO 4 =2:1:1, the reaction time is controlled to be more than 1 hour, the reaction temperature is 50°C, and the negative pressure is 0.01Mpa.

[0030] Raw materials sodium chlorate, hydrogen peroxide and sulfuric acid enter the reactor 1 in proportion from the top autosampler 4 of the main reactor 1, and react after being fully mixed with the air coming out through the air flow meter 3 and the air distributor 12 to form high Concentrated high-purity chlorine dioxide solution. The saturated chlorine dioxide solution is stirred by air, and small bubbles escape from the reaction solution. The incompletely reacted liquid in the main reactor 1 enters the auxiliar...

Embodiment 2

[0032] The preparation method of high-concentration and high-purity chlorine dioxide is as follows: sodium chlorate solution is used as an oxidizing agent, and 30% hydrogen peroxide solution is used as a reducing agent to react in 50% sulfuric acid medium. The proportion of raw materials entering NaClO 3 :H 2 o 2 :H 2 SO 4 =6:4:3, the reaction time is controlled to be more than 1 hour, the reaction temperature is 70°C, and the negative pressure is 0.01Mpa.

[0033] The raw materials sodium chlorate, hydrogen peroxide and sulfuric acid enter the reactor 1 in proportion from the autosampler 4 at the top of the main reactor 1, and react after being fully mixed with the air coming out of the air flow meter 3 and the air distributor 12 to generate a high concentration High-purity chlorine dioxide solution. The saturated chlorine dioxide solution is stirred by air, and small bubbles escape from the reaction solution. The incompletely reacted liquid in the main reactor 1 enters...

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Abstract

The present invention provides one kind of medium scale and small chlorine dioxide generator operating on chemical process and with simple operation, high conversion rate, high product purity, multiple uses and environment friendship. The chlorine dioxide generator consists of tank reactor, acid resisting ducts and water jetting vacuum machine set. The tank reactor is a two-stage or multiple-stage one, has air distributor inside its main reaction tank and balance tube inside its auxiliary reaction tank, and thus has complete reaction and residual effluent reaching the draining standard. The generated chlorine dioxide may be further prepared into water solution or other solution.

Description

Technical field: [0001] The invention relates to an environment-friendly equipment for preparing an environment-friendly oxidizing disinfectant, in particular to an environment-friendly chlorine dioxide generator with a special structure, high conversion rate of raw materials and high purity of products. Background technique: [0002] Chlorine dioxide is a broad-spectrum, high-efficiency, non-toxic fungicide, which can be widely used in disinfection, sterilization, algae killing and oxidation treatment. Because chlorine dioxide has the characteristics of strong oxidation and easy decomposition, it is difficult to store and transport, which brings a lot of inconvenience to some occasions that require the use of chlorine dioxide; in addition, some industries that require long-term and continuous use of chlorine dioxide, A stable and reliable device is required to ensure the supply of chlorine dioxide; the disinfection treatment of tap water and other industries requires the us...

Claims

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Application Information

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IPC IPC(8): C01B11/02A61L2/16
Inventor 徐炎华朱媛朱明新吴建明
Owner NANJING UNIV OF TECH
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