1. Compressed Air Purification System
Carbon molecular sieve is the key material to affect the production of nitrogen generator, as the compressed air provided by compressor usually contains oil and water, which will reduce the adsorption capacity of carbon molecular sieve, so oil and water must be filtrated firstly from the compressed air which will be carried into O2/N2 separation system.

First the air compressed by the compressor to 0.75-1.0 MPa is carried into the air purification system , and then pipelines filters help to remove most water, oil and machinery impurities from the air, the pressure dew point of air reach 2℃ -10 ℃ by the freeze-drying machine, the clean air will be got by purified through the fine filters, ultra-precision filter and activated carbon for oil removal in return.

Compressed air purification system is composed of pipelines filters, freeze-drying machine, fine filters, ultra-fine filters, the activated carbon for oil removal, sewage automatic valves, ball valves, and other components.

2. Air Tank System
The role of air tank systems is to smooth the gas transmission of O2/N2 separation system, preventing too rapid flow velocity in the switching transient, and then air tank system could impact the purification of air, and help to extend the natural life of carbon molecular sieve.

Air tank system is composed of air tank, safety valve, closing valves, ball valves, pressure gauges and so on.

3. O2/N2 Separation System
O2/N2 separation system is the core of N2 generator. Its main part is two towers filled with carbon molecular sieve . When the compressed air get into adsorption tower, the O2, CO2 and H2O is absorbed by carbon molecular sieve, N2 is produced from the export terminal . When one tower produces N2, another tower releases the O2, CO2 and H2O by reducing the pressure to get the renewable desorption of carbon molecular sieve. Two towers alternate adsorption and regeneration to output N2 continuously.

O2/N2 separation system is composed of tow tower filled with carbon molecular sieve, pneumatic valve, muffler, throttle, clamping cylinder, and pressure gauges etc.

4. Nitrogen Buffer System
The main role of N2 buffer system is to balance the pressure and purity of N2 which separated from O2/N2 separation system to ensure continuous supply of N2.

Nitrogen buffer system is composed of buffer tank, flowmeters, dust filters, pressure regulating valve, throttle, and safety valve etc.

5. Electrical Control System
Electrical Control System is to control start-up & shutdown operation, the status light, sound and light alarm fault instructions, purity display, driving pneumatic valve by setting procedures etc.

Electrical Control System is composed of the process controller CPU, triple gas source, electromagnetic valves, lights etc.

2. The unit of product flow "Nm3 / h" means the product flows in the condition of 20 ℃, 0.101 MPa (Absolute Pressure);

3. Pressure means the pressure from the gauge;

4. Dewpoint means the dewpoint under atmospheric pressure.