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Simple process for producing sodium dichloro cyanurate

A technology of sodium dichloroisocyanurate and dichloroisocyanuric acid, applied in the direction of organic chemistry, can solve the problems of high equipment investment cost, decomposition of products or raw materials, and easy production of by-products, so as to improve production efficiency and increase revenue The effect of high efficiency and saving equipment investment cost

Inactive Publication Date: 2012-06-20
蚌埠晶显宏发化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But this process needs to use alkali kettle, alkali metering tank, reaction kettle, solid-liquid separation equipment, mother liquor storage tank, pump and refrigeration equipment, etc., the operation process is complicated, the equipment investment cost is high, and the strong alkali formed by adding sodium hydroxide Harmful environment is easy to cause product or raw material decomposition, easy to produce by-products

Method used

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  • Simple process for producing sodium dichloro cyanurate
  • Simple process for producing sodium dichloro cyanurate
  • Simple process for producing sodium dichloro cyanurate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Get 100g wet trichloroisocyanuric acid (dry basis available chlorine 90.8%, moisture content 8%), be the wet cyanuric acid mixing of 28% with moisture content, the quality of wet cyanuric acid is:

[0018] 100 * ( 1 - 0.08 ) * ( 0.908 - 0.7172 ) 0.7172 * ( 1 - 0.28 ) * 0.95 = 32.3 g

[0019] That is, 28% of water is contained in the above-mentioned wet cyanuric acid 32.3g.

[0020] After the above-mentioned materials are mixed uniformly, stay for 1 hour, then add sodium carbonate until the pH value of...

Embodiment 2

[0022] Get the mixture 100g of wet tricyanoisocyanuric acid and wet dichloroisocyanuric acid (dry base available chlorine 81%, water content 10%), the amount of adding wet cyanuric acid (moisture content is 30%) is:

[0023] 100 * ( 1 - 0.1 ) * ( 0.81 - 0.7172 ) 0.7172 * ( 1 - 0.3 ) * 1 = 16.63 g

[0024] After the above-mentioned substances were mixed uniformly and stayed for 4 hours, 27.2g of sodium carbonate was added to mix uniformly, so that the pH value of the mixture was 6.8, and dried to obtain 112g o...

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Abstract

The invention relates to a production process for sodium dichloro cyanurate, which has easy process operation and low equipment investment cost. The technical scheme comprises the following steps of: uniformly mixing wet trichloro-isocyanuric acid with the water content of 5 to 35 percent or a mixture of the wet trichloro-isocyanuric acid with the water content of 5 to 35 percent and dichlord isocyanurice acid and wet cyanuric acid with the water content of 22.5 to 45 percent; reacting for 1 to 4 hours; and neutralizing the mixture and sodium carbonate or sodium bicarbonate to obtain the sodium dichloro cyanurate. In the process of the invention, only one or two mixers are needed. Compared with the prior art, the simple process has the advantages of obviously less equipment, simplified operation procedure, obviously saved equipment investment cost, and capability of avoiding the decomposition of products or raw materials because no strong alkaline matter such as the sodium hydroxide is used in the reaction, improving the yield and the production efficiency and saving the production cost.

Description

technical field [0001] The invention relates to a production process of sodium dichloroisocyanurate. Background technique [0002] The prior art adopts adding trichloroisocyanuric acid and cyanuric acid in the mother liquor of sodium dichloroisocyanurate, and then adding sodium hydroxide dropwise (the molar ratio of the three is 2:1:3), and after the reaction is complete, the liquid phase The product is suction filtered or centrifuged and then washed and dried; a large amount of sodium dichloroisocyanurate is dissolved in the remaining filtrate, so it is called the mother liquor of sodium dichloroisocyanurate, and the mother liquor is circulated as a substitute for water use. [0003] But this process needs to use alkali kettle, alkali metering tank, reaction kettle, solid-liquid separation equipment, mother liquor storage tank, pump and refrigeration equipment, etc., the operation process is complicated, the equipment investment cost is high, and the strong alkali formed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D251/36
Inventor 唐银华
Owner 蚌埠晶显宏发化工有限公司