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

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The manufacturing method
of potassium bromide
potassium bromide is an important chemical, widely used in medicine, photography, analytical chemistry, inorganic synthesis and photosensitive materials and other fields. This article will introduce the manufacturing method of potassium bromide, including raw material selection, reaction principle, operation steps, equipment requirements and safety precautions.

1. raw material selection

manufacturing potassium bromide is the main raw material of bromine and potassium hydroxide. Bromine is a halogen element, with strong oxidizing and corrosive; potassium hydroxide is a strong alkali, with strong corrosive. Therefore, in the process of manufacturing potassium bromide, it is necessary to select high-purity raw materials to ensure the quality and purity of the product.

2. Reaction Principle

The production of potassium bromide is obtained by the reaction of bromine and potassium hydroxide. The reaction equation is as follows:

Br2 2KOH → 2KBr H2O

In this reaction, bromine reacts with potassium hydroxide to produce potassium bromide and water.

3. operation steps

1. add potassium hydroxide to the reaction kettle, add the right amount of water, stir well.
2. slowly into the bromine gas, while stirring the solution in the reaction kettle, the bromine and potassium hydroxide fully reacted.
3. The reaction temperature and pH value need to be controlled during the reaction to ensure the smooth progress of the reaction.
4. After completion of the reaction, the reaction solution was filtered, washed and dried to obtain a potassium bromide product.

4. equipment requires

to manufacture potassium bromide requires the use of reaction kettle, stirrer, thermometer, pH meter, filter and other equipment. These devices need to have the characteristics of corrosion resistance, good sealing, and easy operation to ensure the safety and efficiency of the manufacturing process.

5. safety precautions

1. Bromine is a toxic and harmful gas that needs to be operated in a well-ventilated environment.
2. Potassium hydroxide is a strong alkali, and it is necessary to avoid contact with skin and eyes.
3. In the manufacturing process, it is necessary to strictly control the reaction temperature and pH value to prevent side reactions and safety accidents.
4. Operators need to have relevant chemical knowledge and skills, comply with safe operating procedures, and ensure the safety and smoothness of the manufacturing process.

In short, the manufacture of potassium bromide requires the selection of high-purity raw materials, control of reaction conditions and operating processes, and attention to equipment requirements and safety matters to ensure product quality and purity.

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