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[Chemical Knowledge]：Production method and process of sodium percarbonate

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The manufacturing method
of sodium percarbonate
sodium percarbonate, also known as 2-hydroxy -2-ethyl -1,3-dioxolane -2-sodium carbonate, is an important chemical production raw material, widely used in washing, bleaching, oxidation and other fields. This article will introduce the manufacturing method of sodium percarbonate.

1. Manufacturing Principle

The manufacturing principle of sodium percarbonate is mainly to combine sodium carbonate with hydrogen peroxide through a chemical reaction to form sodium percarbonate. The specific chemical equation is:

2Na2CO3 3H2O2 → 2Na2CO3 · 3H2O2

2. Manufacturing Process

1. Ingredients

The required sodium carbonate and hydrogen peroxide are added to the batching tank according to a certain proportion, while adding the right amount of stabilizer and water.

2. The reaction
is
in the reaction kettle, and the materials in the batching tank are added to control a certain temperature and pressure to carry out the reaction. During the reaction, constant stirring is required to ensure the uniformity of the reaction.

3. Crystallization
After completion of the
reaction, the material was cooled and crystallized to give sodium percarbonate crystals.

4. Centrifugal separation

The crystallized material is centrifuged to separate sodium percarbonate crystals and mother liquor.

5. Drying
The separated sodium percarbonate crystals are
dried to give the final product.

3. manufacturing equipment

manufacturing sodium percarbonate main equipment including batching tank, reaction kettle, crystallization tank, centrifuge, dryer and so on.
Precautions for
4.

1. During the manufacturing process, temperature and pressure need to be strictly controlled to ensure the safety of the reaction and the quality of the product.

2. Hydrogen peroxide has strong oxidation, so it is necessary to pay attention to safe operation and avoid contact with flammable and explosive substances.

3. During the drying process, it is necessary to control the appropriate temperature and air volume to avoid product decomposition and deterioration.

5. Application

Sodium percarbonate as an important chemical production raw material, widely used in the following fields:

1. Detergent: Sodium percarbonate can be used as an oxidant in detergent, effectively remove stains and odors on clothes.

2. bleach: sodium percarbonate can be used for paper, fabric and other items of bleaching, with good bleaching effect and stability.

3. Oxidant: Sodium percarbonate can be used as an oxidant for water treatment, metal surface treatment and other fields.

In conclusion, sodium percarbonate, as an important raw material for chemical production, has a wide range of applications. In the manufacturing process, it is necessary to strictly control the process conditions and equipment requirements to ensure product quality and safety.

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