Production and operation principle of air separation plant

Air separation unit is the unit for producing air separation. A device that separates air from oxygen and gases.

The operation principle can be divided into the following systems:

1. The power system compresses the air into the unitthrough the air compressor

2. Purification system, the compressed air through the air cooling system, through the contact heat exchange to reduce the temperature, washing

The acid substances and harmful impurities in the air are removed by molecular sieve purification system, and the harmful substances such as water, carbon dioxide, acetylene, propylene, propane and nitrous oxide in the air are removed.

3. Refrigeration system, through expansion refrigeration, follow the refrigeration cycle

4. Heat exchange system, through the refrigeration system and heat exchange system, the heat exchanger mainly uses aluminum plate fin heat exchanger

The device.

5. Distillation system is the core of air separation plant, which realizes the separation of various gases

Separation.

6. Transportation system, produced oxygen and nitrogen and other gases, have various specifications of oxygen and nitrogen compression

Conveyor pipe.

7. Liquid storage system, by the tank storage liquid oxygen and liquid nitrogen and other products, with cryogenic liquid pump vaporizer.

The air separation unit is such an operation, through the compression cycle deep freezing method to change the air into liquid, and then through distillation and gradually separate from the liquid air to produce oxygen, nitrogen, argon and other inert gases.