Clean production process of sodium dichloroisoyanurate

A technology of sodium dichloroisocyanurate and clean production, applied in the direction of organic chemistry, etc., can solve the problems of large water consumption, increased wastewater treatment, and heavy burden, and achieve the effects of improving production efficiency, reducing water consumption, and reducing consumption

Active Publication Date: 2009-03-18
山东大明消毒科技有限公司
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Problems solved by technology

This kind of production is a batch production method, and its shortcomings are mainly manifested in the following points: the waste water produced in the production is discharged directly after treatment, causing serious environmental pollution; because the

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  • Clean production process of sodium dichloroisoyanurate
  • Clean production process of sodium dichloroisoyanurate

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[0020] The production process of the present invention includes the following steps:

[0021] ① After mixing cyanuric acid, calcium carbonate and water in proportion, put them in the batching kettle and stir to form a slurry. The weight ratio of cyanuric acid to calcium carbonate is 1:0.7-0.8, and water is 7-16 times the weight of cyanuric acid. Any value within the stated value range is acceptable;

[0022] ②Push the slurry into the pre-chlorination reactor for pre-chlorination reaction;

[0023] ③After the pre-chlorination reaction, the slurry enters the differential circulator for chlorination reaction. At the same time, chlorine gas is introduced from the bottom of the differential circulator, and the reaction temperature is 10℃-30℃;

[0024] ④ The residual chlorine generated in the chlorination reaction is sent back to the pre-chlorination reactor for reuse;

[0025] ⑤Use a centrifuge for liquid-solid separation of materials after chlorination reaction;

[0026] ⑥ The liquid ...

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Abstract

The invention disclosed a process for cleanly producing sodium dichloro isocyanurate. The process comprises the following steps: putting cyanuric acid, calcium carbonate and water which are mixed and put into a batching kettle to be stirred into slurry according to the proportion, pouring the slurry into a pre-chlorination reactor to perform pre-chlorination reaction; putting the slurry after the pre-chlorinated into a differential circulator to perform chlorination reaction, and sending the residual chlorine generated in the chlorination reaction back to the pre-chlorination reactor for reutilization; using a centrifugal machine to perform liquid-solid separation on the materials after the chlorination; performing settlement dechlorination on the separated liquid, adding hydrochloric acid to the liquid to generate cyanuric acid and chlorine after decomposition, and sending the chlorine back to the pre-chlorination reactor; washing a filter cake obtained after centrifuging with water, and sending the washing water after the washing back to the batching kettle; and using sodium carbonate to perform solid phase neutralization on the filter cake after the washing, and using airflow to dry the filter cake after the neutralization so as to obtain the sodium dichloro isocyanurate product. The process adopts continuous reaction to produce the sodium dichloro isocyanurate, so that the production efficiency is greatly improved; besides, the production process does not discharge wastewater, thus the environment is not polluted at all.

Description

technical field [0001] The step of the present invention and sodium dichloroisocyanurate is a clean production process of sodium dichloroisocyanurate. Background technique [0002] At present, the production process of sodium dichloroisocyanurate is generally produced by the liquid caustic method, using liquid caustic soda and cyanuric acid to react to produce disodium cyanurate, and then reacting with chlorine gas to generate dichloroisocyanuric acid, dichloroisocyanuric acid Then react with liquid caustic soda to generate sodium dichloroisocyanurate. This kind of production is a batch production method, and its shortcomings are mainly manifested in the following points: the waste water produced in the production is discharged directly after treatment, causing serious environmental pollution; because the reaction requires a low temperature state, the energy consumption is relatively high; The product decomposes seriously; the water consumption in the production process is ...

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Application Information

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IPC IPC(8): C07D251/36
Inventor 李成顺邵腾
Owner 山东大明消毒科技有限公司
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