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Application of potassium persulfate in preparing potassium monopersulfate compound salt and preparation method of potassium monopersulfate compound salt

A technology of potassium monopersulfate and potassium peroxodisulfate, which is applied in the field of preparation of inorganic peroxides, can solve the problems of complex preparation process and difficulty in meeting the product quality requirements of potassium monopersulfate compound salt, and achieve simple production process , shorten the preparation time, reduce the effect of the preparation process

Active Publication Date: 2018-11-23
河北纳泰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the complex preparation process of the existing potassium monopersulfate compound salt, the problem that the prepared potassium monopersulfate compound salt is difficult to meet the product quality requirements, the present invention provides a kind of potassium peroxodisulfate in the preparation of potassium monopersulfate compound salt application, and can effectively improve the performance of potassium monopersulfate compound salt products, and the preparation method of potassium monopersulfate compound salt is relatively simple, safe, environmentally friendly and efficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation method of potassium monopersulfate compound salt:

[0043] In step a, add 61g of 70wt% hydrogen peroxide into a 1000ml four-neck flask with stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the system temperature reaches -2°C. 215g of 65wt% fuming sulfuric acid was added dropwise to the container, and the dropwise addition time was 2h, and the temperature was kept for 25min to obtain the peroxidation reaction solution;

[0044] Step b, control the temperature in the reactor to 18°C, add dropwise 300g of the crystallization dehydration mother liquor containing 1wt% potassium peroxodisulfate to the peroxidation reaction solution, and add the dropwise time for 25min, then control the temperature at 23°C, add Potassium bicarbonate 250g, the addition time is controlled to be 120min, obtains the neutralization reaction liquid;

[0045] In step c, the neutralization reaction liquid is cooled to -8°C to cr...

Embodiment 2

[0047] A kind of preparation method of potassium monopersulfate compound salt:

[0048] In step a, add 105g of 65wt% hydrogen peroxide into a 1000ml four-necked flask with stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the system temperature reaches 0°C. Add 230g of 30wt% oleum dropwise for 2.5 hours, and keep warm for 30 minutes to obtain a peroxidation reaction solution;

[0049] Step b, control the temperature in the reactor to 20°C, add dropwise 368g of crystallization dehydration mother liquor containing 5wt% potassium peroxodisulfate to the peroxidation reaction solution, the dropping time is 15min, then control the temperature at 25°C, add Potassium bicarbonate 300g, the addition time is controlled as 60min, to obtain the neutralization reaction solution;

[0050] Step c, the neutralization reaction solution is cooled to -2°C to crystallize, the crystallization time is 90min, centrifuged, and dried at 60°C to obtain ...

Embodiment 3

[0052] A kind of preparation method of potassium monopersulfate compound salt:

[0053] In step a, add 142g of 60wt% hydrogen peroxide into a 1000ml four-necked flask with stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the system temperature reaches 5°C. 240g of 10wt% fuming sulfuric acid was added dropwise for 3 hours and kept for 35 minutes to obtain a peroxidation reaction solution;

[0054] Step b, control the temperature in the reactor to 22°C, add dropwise 380g of crystallization dehydration mother liquor containing 10wt% potassium peroxodisulfate to the peroxidation reaction solution, the dropping time is 5min, then control the temperature at 27°C, add Potassium bicarbonate 350g, the addition time is controlled to be 20min, obtains the neutralization reaction liquid;

[0055] Step c, the neutralization reaction solution is cooled to 5°C to crystallize, the crystallization time is 120min, centrifuged, and dried at 80°...

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Abstract

The invention provides application of potassium persulfate in preparing potassium monopersulfate compound salt and a preparation method of the potassium monopersulfate compound salt. The preparation method of the potassium monopersulfate compound salt comprises the following steps: step a, adding hydrogen peroxide into a reactor, and controlling the temperature to be 2 DEG C below zero to 5 DEG C;dropwise adding oleum into the reactor under the condition of stirring and carrying out thermal insulation for 25 to 35 minutes to obtain peroxide reaction liquid; step b, controlling the temperaturein the reactor to be 18 to 22 DEG C and dropwise adding a solution containing the potassium persulfate into the peroxide reaction liquid; then controlling the temperature to be 23 to 27 DEG C and adding an alkaline potassium compound to obtain neutralized reaction liquid; step c, carrying out cooling crystallization on the neutralized reaction liquid, centrifuging, drying and adding an anticakingagent, thus obtaining a product. The preparation method of the potassium monopersulfate compound salt, disclosed by the invention, has the advantages of simple production process, capability of completing the reaction at normal pressure, no special requirements on the equipment and suitability for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic peroxides, in particular to the application of potassium peroxodisulfate in the preparation of potassium monopersulfate compound salt and the preparation method of potassium monopersulfate compound salt. Background technique [0002] Potassium monopersulfate compound salt, also known as potassium persulfate compound salt, potassium hydrogen persulfate compound salt, potassium monopersulfate compound salt, is composed of three components: potassium hydrogen persulfate, potassium hydrogen sulfate and potassium sulfate Compound salt, the molecular formula is 2KHSO 5 .KHSO 4 .K 2 SO 4 , with a molecular weight of 614.7, is a widely used disinfectant and bactericide with strong oxidizing properties. It is mainly used for bottom improvement of aquatic products, disinfection of livestock breeding, cleaning of dentures, low-temperature dry bleaching, anti-shrinkage treatment of wool fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/02A01P1/00A01P3/00
CPCA01N59/02
Inventor 孟红伟焦鑫冯亚利张少丹
Owner 河北纳泰化工有限公司
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