Sodium peroxycarbonate (2Na2CO3-3H2O2), also known as sodium perborate or sodium percarbonate, is an inorganic compound. It has the effect of releasing oxygen, bleaching, sterilizing and deodorizing, so it is widely used in the fields of washing, bleaching, food and medical treatment. This article will introduce the manufacturing method of sodium peroxycarbonate.
I. Production raw materials
The raw materials for the production of sodium peroxycarbonate mainly include sodium carbonate, hydrogen peroxide and water. Among them, sodium carbonate is an alkaline absorbent, hydrogen peroxide is an oxidizing agent, and water is used as a solvent and reaction medium.
Two, production principle
The production principle of sodium peroxycarbonate is to react hydrogen peroxide with sodium carbonate under certain conditions to produce sodium peroxycarbonate crystals. The reaction equation is:
2Na2CO3 + 3H2O2 → 2Na2CO3-3H2O2
3. Production process
1. Dosing
According to a certain proportion of sodium carbonate, hydrogen peroxide and water are added to the dosing tank, and stirred well.
2. Reaction
Pump the mixture in the dosing tank into the reactor, and carry out the reaction under certain temperature and pressure to produce sodium peroxide carbonate crystals.
3. Crystallization
After the reaction is completed, the reaction liquid is pumped into the crystallizer for crystallization. The crystallizer is equipped with a stirring device to promote the generation and growth of crystals.
4. Centrifugal Separation
After the crystallization is completed, the crystallized liquid is pumped into the centrifuge for centrifugal separation to obtain sodium peroxycarbonate crystals and mother liquor.
5. Drying
Send the sodium peroxycarbonate crystals into the drier for drying to get the dried sodium peroxycarbonate product.
4. Precautions
1. Control the reaction temperature and pressure to ensure the smooth progress of the reaction.
2. Suitable stirring device should be set up in the crystallizer to promote the generation and growth of crystals.
3. The centrifugal separation should control the centrifugal speed and time to avoid the crystallization broken and mother liquor residue.
4. Drying temperature and time should be controlled to avoid overheating and decomposition of the product.
V. Summary
The manufacturing method of sodium peroxycarbonate mainly includes the steps of ingredients, reaction, crystallization, centrifugal separation and drying. In the production process, attention needs to be paid to control the process parameters such as reaction temperature and pressure, crystallization and drying to ensure the quality and yield of the product.
