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Continuous production system and method for potassium peroxymonosulfate composite salt

A potassium hydrogen persulfate compound salt and production system technology, which is applied in the continuous production system field of potassium hydrogen persulfate compound salt, can solve problems such as low efficiency, high energy consumption, unstable product quality, etc., and achieve an increase in production The effect of high efficiency, fast material flow rate, and improvement of equipment utilization and production efficiency

Active Publication Date: 2021-04-13
河北纳泰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of high energy consumption, low efficiency and unstable product quality in the existing preparation method, the present invention provides a continuous production system and production method of potassium hydrogen persulfate compound salt

Method used

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  • Continuous production system and method for potassium peroxymonosulfate composite salt

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Embodiment 1

[0036] see figure 1 , the continuous production system of potassium hydrogen persulfate compound salt provided by the present invention is now described, and the continuous production system includes: an oxidation reaction device, a dilution device, a neutralization device, and a continuous crystallization device connected in sequence according to the flow direction of the feed liquid 8 , the first solid-liquid separation device 9, the mother liquor circulation device, the mother liquor crystallization system and the second solid-liquid separation device 14;

[0037] The oxidation reaction device includes a first reactor 1, a second reactor 2 and a reaction liquid circulation pump 3 connected in sequence, and the first reactor 1 is provided with a hydrogen peroxide feed port, a circulating oxidation liquid inlet and a first feed liquid outlet , the second reactor 2 is provided with a sulfuric acid feed port, a first feed liquid inlet, a circulating oxidation liquid outlet and ...

specific Embodiment approach

[0044] A specific embodiment provided as the continuous production system of potassium hydrogen persulfate compound salt of the present invention: the first solid-liquid separation device 10 is a centrifuge; the second solid-liquid separation device 15 is a centrifuge; The dilution device 4 itself is provided with a dilution liquid circulation pump 5; 7 between the neutralization reactor 6 and the neutralization cooler is provided with a neutralization liquid circulation pump 8; the addition of the circulation pump contributes to the solution in the reaction system Further cooling and dilution can improve the stability and safety of the reaction system.

[0045] As a specific embodiment provided by the continuous production system of potassium hydrogen persulfate compound salt of the present invention: the mother liquor crystallization system includes a low-temperature evaporator and a crystallization device connected in sequence to further recycle the products in the mother li...

Embodiment 2

[0048] Present embodiment provides a kind of continuous production method of potassium monopersulfate compound salt, produces with the continuous production system of potassium monopersulfate compound salt in embodiment 1. Specifically include the following steps:

[0049] S1: Continuously add hydrogen peroxide with a mass concentration of 70% to the first reactor 1, the mass flow rate of the hydrogen peroxide is 60kg / h, and continuously add SO to the second reactor 2 3 Content is the oleum of 65%, the mass flow rate of described oleum is 110kg / h, starts described oxidizing liquid circulation pump 3, makes hydrogen peroxide and oleum contact and circulates in described oxidation device, obtains oxidation liquid, control the temperature in the first reactor 1 to 1°C, and the temperature in the second reactor 2 to 5°C. When the detection sampling point at the outlet of the second reactor 2 measures When the mass concentration reaches 55% to 58%, control the oxidation liquid to ...

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Abstract

The invention relates to the technical field of inorganic salt production, and in particular relates to a continuous production system and method for potassium peroxymonosulfate composite salt. The production method comprises the steps of S1 continuously adding hydrogen peroxide and fuming sulfuric acid into a first reactor and a second reactor respectively, starting a reaction liquid circulating pump, enabling the hydrogen peroxide and the fuming sulfuric acid to be in contact with each other, circulating in an oxidation reaction device and then flowing into a dilution device; S2 allowing oxidation liquid to flow into a neutralization reactor through the dilution device, continuously adding potassium carbonate, cooling the obtained neutralization liquid through a cooler, and allowing the cooled neutralization liquid to flow into a continuous crystallization device; and S3 enabling the crystallized neutralization liquid to flow into a first solid-liquid separation device, enabling the liquid as a mother solution to flow into a mother solution circulating tank, opening a mother solution circulating pump to enable the mother solution in the mother solution circulating tank to flow into the dilution device to dilute the oxidation liquid, further processing the solid, and outputting, thereby realizing automatic production and continuous product output.

Description

technical field [0001] The invention relates to the technical field of inorganic salt production, in particular to a continuous production system and production method of potassium monopersulfate compound salt. Background technique [0002] Potassium monopersulfate compound salt is a stable, convenient, and widely used excellent acidic oxidant. Its application fields involve oral cleaning, swimming pool and hot spring water disinfection, circuit board etchant, pulp bleaching, and wool fabric anti-shrinkage treatment , Precious metal refining, etc. Potassium monopersulfate compound salt is also an important auxiliary agent in organic synthesis, which can epoxidize the double bonds in organic molecules, and is a free radical initiator for many polymerization reactions. In addition, potassium hydrogen persulfate compound salt can be used as an oxidant for sulfur-containing substances such as hydrogen sulfide in wastewater treatment, a low-temperature oxygen-based bleach in det...

Claims

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Application Information

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IPC IPC(8): C01B15/08
CPCC01B15/08
Inventor 张二令许永召
Owner 河北纳泰化工有限公司
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