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Production method for continuously salifying cyanuric acid

A production method, the technology of trisodium cyanurate, is applied in the field of continuous salt formation of cyanuric acid, which can solve the problems of high labor intensity, difficulty in realizing automatic control, complicated operation steps, etc., and achieve high equipment production capacity and easy automatic control , the effect of simple operation

Pending Publication Date: 2020-08-18
覃晓刚
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Problems solved by technology

The process characteristics of using sequencing batch reaction technology are complicated operation steps, high labor intensity, low equipment production capacity (calculated by the production capacity of unit volume reactor), and the production process is not easy to realize automatic control.

Method used

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  • Production method for continuously salifying cyanuric acid

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Embodiment

[0051] The production method of this cyanuric acid continuous salification:

[0052] Using solid cyanuric acid and liquid sodium hydroxide as main raw materials, trisodium cyanurate is produced by continuous reaction process.

[0053] The production method of described continuous salification of cyanuric acid is carried out in two steps:

[0054] The first step is solid cyanuric acid and water to generate cyanuric acid-water slurry.

[0055] The second step is to react cyanuric acid-water slurry with sodium hydroxide to generate trisodium cyanurate.

[0056] The reaction of the cyanuric acid-water slurry and sodium hydroxide is carried out in two or more reactors connected in series.

[0057] Sodium hydroxide, one of the reactants, is added to two or more reactors respectively at the same time.

[0058] The materials participating in the reaction are added into the reactor after continuous metering, and leave the reactor continuously.

[0059] The concrete steps of the pro...

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Abstract

The invention discloses a production method for continuously salifying cyanuric acid. Solid cyanuric acid and liquid sodium hydroxide are used as main raw materials, and trisodium cyanurate is produced by a continuous reaction process. The production method for continuously salifying the cyanuric acid comprises the following two steps of: 1, reacting solid cyanuric acid with clear water to generate cyanuric acid-water slurry; and 2, reacting the cyanuric acid-water slurry with sodium hydroxide to generate trisodium cyanurate. The reaction process is a continuous process, the materials enteringa reaction system continuously enter the reaction system in the reaction process, and reaction products also continuously leave the reaction system. A feeding amount in the reaction process takes mass / time as a metering unit. The process for generating the sodium cyanurate salt by taking the cyanuric acid and sodium hydroxide as raw materials and adopting the continuous reaction has the advantages of simple operation, higher equipment production capacity, and easiness in realizing automatic control in production process.

Description

technical field [0001] The invention relates to a production process of trisodium cyanurate, in particular to a production method for continuous salt formation of cyanuric acid. Background technique [0002] At present, in the process of synthesizing chloroisocyanuric acid (including sodium dichloroisocyanurate and trichloroisocyanuric acid) from cyanuric acid, sodium hydroxide, and chlorine gas, cyanuric acid reacts with sodium hydroxide to form sodium cyanuric acid (including disodium cyanurate and trisodium cyanurate) is the first step. The traditional production process adopts the sequential batch reaction technology of intermittent operation, that is: cyanuric acid, sodium hydroxide and other raw materials are mixed and reacted in batches according to stoichiometry, and the reaction is completed after a certain period of time, and the reactants reach the predetermined conversion rate before transfer to the back system. During the reaction process, the materials added ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/32
CPCC07D251/32
Inventor 覃晓刚
Owner 覃晓刚
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