What is an aftercooler for air compressors?

- Jul 18, 2019-

The air compressor aftercooleris simply a set of industrial equipment used to separate the components of the air to produce oxygen, nitrogen and argon. There are also rare gases such as helium, neon, argon, xenon, krypton, xenon, etc.


Product structure system

filtering system

Dust filtration to remove dust and mechanical impurities

Compressor system

Work on gas, improve energy, and have refrigeration capacity

Pre-cooling system

Pre-cooling the gas, reducing energy consumption and improving economy. The first throttling cycle with pre-cooling is more economical than the one without re-cooling, which increases the refrigeration cycle, reduces the workload of the heat exchanger, and makes full use of the cooling capacity of the product;

Purification system

Explosion-proof, purification; air is a multi-component composition, in addition to oxygen, nitrogen and other gas components, there are water vapor, carbon dioxide, acetylene and a small amount of dust and other organic impurities. These impurities will come into great harm with the air entering the air compressor and the air separation device. The solid impurities will wear the operating parts of the air compressor, block the cooler and reduce the cooling effect; the water vapor and carbon dioxide will freeze and precipitate during the air cooling process. The equipment and gas pipeline will be blocked, which will make the air separation unit unable to produce; acetylene will cause an explosion accident after entering the air separation unit, so in order to ensure the safe operation of the oxygen generator, it is necessary to remove these impurities.

Using a solid adsorbent to make a difference in the multicomponent adsorption capacity of the gas mixture; the ratio of oxygen to nitrogen production is 1: (2.5 to 3.5);

Function: adsorption of moisture, carbon dioxide, acetylene, propylene, propane, heavy hydrocarbons, N2O and other impurities in the air.

Compression expansion system

During the expansion process, there is external power output. After the expansion, the gas internal energy can be increased, and energy needs to be consumed. These energy needs to be compensated by kinetic energy, so the gas temperature must be lowered. Heat exchange system: achieve energy transfer, improve economy, low temperature operating conditions;

Separation system

Nitrogen/oxygen separation main distillation column system composition

Air separation, an appropriate amount of expanded air (20% to 25% of the air) can be sent directly to the above tower for rectification; nitrogen is taken from the top of the lower tower or under the top of the condensing evaporator, and after reheating, enter the nitrogen turbine expander After being passed through the expander and receiving the cold amount, it is output as a product or vented.