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Preparation method of dihydrate sodium dichloroisocyanate

The technology of sodium dichloroisocyanurate and sodium dichloroisocyanurate is applied in the field of preparation of disinfectants, can solve the problems of poor operating environment, difficult operation, low volume production capacity, etc., and achieves easy operation, easy control, and production. The effect of continuous process and good economic benefits

Active Publication Date: 2015-12-23
JUANCHENG KANGTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chlorination method is a two-stage intermittent chlorination method. The production capacity per unit volume of the two-stage intermittent chlorination equipment is low, the operation is cumbersome, the control is difficult, the operation is difficult, the operating environment is poor, and the content of cyanogen trichloride is high, which is easy to occur. explode
And the product is mixed with calcium carbonate impurities and the solution is turbid after being dissolved in water, and the product quality is poor
The by-product calcium chloride is mixed with cyanuric acid, and the purity of calcium chloride is low, so it cannot be used as a chemical raw material in industry

Method used

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  • Preparation method of dihydrate sodium dichloroisocyanate

Examples

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Effect test

Embodiment 1

[0027] A kind of preparation method of sodium dichloroisocyanate dihydrate, is characterized in that: comprise the steps:

[0028] (1) Preparation of calcium carbonate suspension:

[0029] In a 5000L stirring enamel batching kettle, according to the weight ratio of 99% calcium carbonate and water 1:4, 1000kg of 99% calcium carbonate and 4000kg of water are made into calcium carbonate suspension;

[0030] (2) Preparation of intermediate product dichloride oxide:

[0031] Send the calcium carbonate suspension obtained in step (1) into the chlorine dioxide pipeline reactor, which is equipped with a high-pressure circulation pump to provide a reaction pressure of 0.6MPa, and the chlorine dioxide pipeline reactor is also equipped with a circulation tank , the circulation tank is equipped with a cooling device, the reaction temperature is controlled at 16°C, and 99% chlorine gas is fed through the jet pump at 190L / h to obtain the product oxidized dichlorine gas and a calcium chlori...

Embodiment 2

[0039] A kind of preparation method of sodium dichloroisocyanate dihydrate, is characterized in that: comprise the steps:

[0040] (1) Preparation of calcium carbonate suspension:

[0041] In a 5000L stirring enamel batching kettle, according to the weight ratio of 99% calcium carbonate and water 1:5, 800kg of 99% calcium carbonate and 4000kg of water are made into calcium carbonate suspension;

[0042] (2) Preparation of intermediate product dichloride oxide:

[0043] Send the calcium carbonate suspension obtained in step (1) into the chlorine dioxide pipeline reactor, which is equipped with a high-pressure circulation pump to provide a reaction pressure of 0.65MPa, and the chlorine dioxide pipeline reactor is also equipped with a circulation tank , the circulation tank is equipped with a cooling device, the reaction temperature is controlled at 18°C, and 99% chlorine gas is fed through a jet pump at 190L / h to obtain the product oxidized dichlorine gas and a calcium chloride...

Embodiment 3

[0051] A kind of preparation method of sodium dichloroisocyanate dihydrate, is characterized in that: comprise the steps:

[0052] (1) Preparation of calcium carbonate suspension:

[0053] In a 5000L stirring enamel batching kettle, according to the weight ratio of 99% calcium carbonate and water 1:4, 1000kg of 99% calcium carbonate and 4000kg of water are made into calcium carbonate suspension;

[0054] (2) Preparation of intermediate product dichloride oxide:

[0055] Send the calcium carbonate suspension obtained in step (1) into the chlorine dioxide pipeline reactor, which is equipped with a high-pressure circulation pump to provide a reaction pressure of 0.6MPa, and the chlorine dioxide pipeline reactor is also equipped with a circulation tank , the circulation tank is equipped with a cooling device, the reaction temperature is controlled at 20°C, and 99% chlorine gas is fed through the jet pump at 190L / h to obtain the product oxidized dichlorine gas and a calcium chlori...

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Abstract

The invention relates to the preparation field of sanitizer, in particular to a preparation method of dihydrate sodium dichloroisocyanate. The preparation method of the dihydrate sodium dichloroisocyanate is characterized by comprising the following steps of (1) preparing calcium carbonate suspension; (2) preparing intermediate product dichlorine monoxide; (3) preparing cyanuric acid suspension; (4) preparing intermediate product dichlord isocyanurice acid; (5) preparing dehydrate sodium dichloroisocyanurate. The preparation method of the dihydrate sodium dichloroisocyanate has the advantages of work flow continuity and high yield, impurities of products and by-products are less, the purity is high, the operation is simple, convenient and easy to control, the raw material production cost is low, mother liquor water power produced in production can be recycled, no waste water or waste gas is emitted, favorable economic benefit is achieved, and the cost of each ton of products is reduced by RMB680.

Description

technical field [0001] The invention relates to the field of preparation of disinfectants, in particular to a preparation method of sodium dichloroisocyanurate dihydrate. Background technique [0002] Sodium dichloroisocyanurate dihydrate is a very strong disinfectant, and it is also a chlorinating agent and oxidizing agent in chemical production. The products are high-efficiency, fast, broad-spectrum, and low-toxicity disinfectants, which can be rapidly and effectively disinfected Kill all kinds of bacteria, fungi, tooth spores and molds, etc. The product also has the functions of inactivating hepatitis A and hepatitis B surface antigen, algae killing, deodorizing, water purification and bleaching. This product is promoted internationally The non-toxic and safe disinfectant products are widely used in swimming pool disinfection, industrial water cycle treatment, food processing industry, food hygiene industry, aquaculture industry, hotels and medical places. [0003] At pr...

Claims

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Application Information

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IPC IPC(8): C07D251/36
CPCC07D251/36
Inventor 夏俊祥王宪生韩建臣
Owner JUANCHENG KANGTAI CHEM
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