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Method for efficiently and continuously producing potassium peroxymonosulfate composite salt

A kind of potassium hydrogen persulfate compound salt, high-efficiency technology, applied in the direction of chemical instruments and methods, alkali metal sulfite/sulfite, alkali metal compounds, etc., can solve the difficulty of controlling the precise addition of raw materials, low cooling efficiency, Product quality fluctuations and other issues, to achieve the effect of automatic precision control, small equipment footprint, and less online raw materials

Pending Publication Date: 2022-08-09
SHANGYU JIEHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At this stage, the production process of potassium hydrogen persulfate compound salt mostly adopts kettle-type intermittent reaction or part of the process adopts continuous reaction pseudo-continuous production process. As long as there is intermittent reaction, the probability of product quality fluctuations will increase greatly
In addition, it is difficult to control the precise addition of raw materials in the batch reaction process, the loss rate of hydrogen peroxide is high, the cooling efficiency is low, the safety hazard is large, the equipment occupies a large space, and the utilization rate is not high, the equipment has serious corrosion and the reality of difficult maintenance Happening

Method used

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  • Method for efficiently and continuously producing potassium peroxymonosulfate composite salt
  • Method for efficiently and continuously producing potassium peroxymonosulfate composite salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) raw material: weigh 150kg of oxidizing liquid by mass flowmeter, pump it into raw material tank 1, open frozen brine, reduce the temperature of oxidizing liquid to -10 ℃, use as raw material A for standby; weigh 250kg of mother liquor by mass flowmeter, Pump into the raw material tank 2, open the frozen brine, reduce the temperature of the mother liquor to -10 ° C, and use it as the raw material B for standby; weigh 90 kg of potassium carbonate and put it into the silo for standby.

[0029] Reactor equipment: the mixer is a spiral plate mixer with a heat exchange area of ​​5m 2 .

[0030] Neutralization kettle: The transfer kettle is a 300L stainless steel reactor.

[0031] (2) The raw material A and the raw material B are pumped and pumped into the mixer through the flow meter, and the flow rate of the raw material A is controlled to be 75kg / h, and the flow rate of the raw material B is 125kg / h; the inlet frozen brine is -20 ℃, and the outlet frozen brine is 5 ℃;...

Embodiment 2

[0036] The difference from Example 1 is that the selected alkali metal salt of potassium is KOH.

[0037] (1) Raw material: weigh 150kg of oxidizing liquid by mass flowmeter, pump into raw material tank 1, turn on frozen brine, reduce the temperature of peroxide liquid to -10°C, and use as raw material A for standby; weigh 250kg of mother liquor by mass flowmeter , pumped into raw material tank 2, opened frozen brine, lowered the mother liquor temperature to -10 ℃, used as raw material B for standby; weighed 74 kg of potassium hydroxide and put it into the silo for standby.

[0038] Reactor equipment: the mixer is a spiral plate mixer with a heat exchange area of ​​5m 2 .

[0039] Neutralization kettle: The transfer kettle is a 300L stainless steel reactor.

[0040] (2) The raw material A and the raw material B are pumped and pumped into the mixer through the flow meter, and the flow rate of the raw material A is controlled to be 75kg / h, and the flow rate of the raw material...

Embodiment 3

[0045] The difference from Example 1 is that the heat exchange area of ​​the mixer is different.

[0046](1) raw material: weigh 150kg of oxidizing liquid by mass flow meter, pump into raw material tank 1, open frozen brine, reduce the temperature of oxidizing liquid to -10 ℃, use as raw material A for standby; weigh 250kg of mother liquor by mass flow meter , pumped into the raw material tank 2, opened the frozen brine, lowered the temperature of the mother liquor to -10 ℃, used as the raw material B for standby; weighed 90 kg of potassium carbonate and put it into the silo for standby.

[0047] Reactor equipment: the mixer is a spiral plate mixer with a heat exchange area of ​​10m 2 .

[0048] Neutralization kettle: The transfer kettle is a 300L stainless steel reactor.

[0049] (2) The raw material A and the raw material B are pumped and pumped into the mixer through a flow meter, and the flow rate of the raw material A is controlled to be 75kg / h, and the flow rate of the...

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Abstract

The invention discloses a method for efficiently and continuously producing potassium peroxymonosulfate composite salt. The process comprises the following steps: 1, taking oxidation liquid prepared by reaction of sulfuric acid and hydrogen peroxide as a raw material A; 2, taking the diluted solution as a raw material B; 3, taking alkali metal salt of potassium as a raw material C; 4, enabling the raw material A and the raw material B to simultaneously flow through a mixer according to a set proportion through an automatic control system for continuous mixing, and injecting the mixed solution into a neutralization kettle; 5, continuously adding the raw material C into the neutralization kettle to prepare a neutralization solution; 6, when the neutralization liquid reaches the inner volume of the neutralization kettle, continuously putting the neutralization liquid in the kettle into a crystallization kettle for crystallization; 7, the turbid liquid in the crystallization kettle is continuously put into a continuous centrifugal machine to be centrifuged, and a potassium peroxymonosulfate composite salt wet product and mother liquor are obtained; and 8, conveying the wet product to a vibrated fluidized bed, and drying to obtain a potassium peroxymonosulfate composite salt finished product.

Description

technical field [0001] The invention relates to the technical field of preparation of potassium hydrogen peroxymonosulfate composite salt, in particular to a real continuous production system and production process of potassium hydrogen peroxymonosulfate composite salt. Background technique [0002] Potassium hydrogen peroxymonosulfate compound salt is a kind of white crystalline particles with high oxidation potential and is an excellent acidic strong oxidant. It is a compound salt composed of potassium hydrogen peroxymonosulfate, potassium hydrogen sulfate and potassium sulfate. Potassium peroxymonosulfate compound salt has a wide range of applications, and its fields involve circuit board etchant, swimming pool disinfectant, disinfectant in animal protection industry, denture and oral cleaning agent, pulp bleaching agent, anti-shrinkage treatment of wool fabric, precious metal refining And many free radical initiators for polymerization, etc. [0003] At present, the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/08C01D5/00
CPCC01B15/08C01D5/00C01P2004/82Y02P20/10
Inventor 陶卓奇崔旭罗力军严朝阳陶彭均黄卓敏苏建强刘龙
Owner SHANGYU JIEHUA CHEM
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