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[Chemical Knowledge]：Production and manufacturing method and process flow of ammonium potassium persulfate

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Ammonium potassium persulfate is an important raw material for chemical production, which is widely used in redox reaction, bleaching, water treatment and other fields. This article will introduce the manufacturing method of ammonium potassium persulfate, including raw material preparation, reaction process, post-treatment and other links.

1. raw material preparation

manufacturing ammonium potassium persulfate need to prepare the following raw materials: ammonium sulfate, potassium sulfate, hydrogen peroxide, sodium hydroxide. Among them, ammonium sulfate and potassium sulfate should be chemically pure reagents, hydrogen peroxide should be about 30% aqueous solution, and sodium hydroxide should be industrial grade or chemically pure reagents.

2. Reaction Process

1. Ammonium Sulfate and Sodium Hydroxide Reaction
Ammonium sulfate and sodium hydroxide are added to the reactor according to a certain proportion, the reaction temperature is controlled, and the reaction generates sodium sulfate and ammonia. Constant stirring is required during the reaction to ensure a homogeneous reaction. After completion of the reaction, the reaction solution was filtered to remove generated ammonia gas and insolubles.

2. Potassium sulfate and hydrogen peroxide reaction
Potassium sulfate and hydrogen peroxide are added into another reactor according to a certain proportion, the reaction temperature is controlled, and the reaction generates potassium persulfate and water. The reaction process also requires constant stirring to avoid decomposition of hydrogen peroxide. After completion of the reaction, the reaction solution was filtered to remove insoluble matter.

3. Mixing reaction
The sodium sulfate and potassium persulfate obtained from the above two reactions are mixed according to a certain ratio, and added into the reactor to control the reaction temperature and time, and the reaction generates ammonium potassium persulfate and water. Constant stirring is required during the reaction to ensure a homogeneous reaction. After completion of the reaction, the reaction solution was cooled to room temperature to obtain crystals of ammonium potassium persulfate.

3. work-up

The crystals are filtered, washed and dried to give the finished ammonium potassium persulfate sulfate. It should be noted that during the filtration and washing process, sodium ammonium potassium persulfate should be avoided from contacting with water to avoid hydrolysis reaction. The temperature and humidity should be controlled during the drying process to avoid product agglomeration or deterioration.
Precautions for
4.

1. During the entire manufacturing process, the quality and proportion of raw materials should be strictly controlled to ensure that the reaction generates the required sodium persulfate, ammonium and potassium persulfate.
2. The control of reaction temperature and time has a great influence on product quality and yield, and should be adjusted and optimized according to actual conditions.
3. In the post-processing process, it should be ensured that the product purity and quality meet relevant standards and requirements.

In short, the manufacturing method of ammonium potassium persulfate involves multiple chemical reactions and operating steps, and it is necessary to strictly control the process parameters and operating points of each link to ensure product quality and yield. At the same time, attention should be paid to safety and environmental protection in the production process to avoid harm to the environment and personnel.

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