Compressor provides compressed air, air purification system, air oxygen clean compression, nitrogen separation into the adsorption tower, to obtain qualified nitrogen, the process includes:

Compressed air: under a certain pressure, pressure swing adsorption, in order to achieve the best adsorption, therefore, the environment to compressed air; Screw compressors are usually used and centrifugal, screw compressors are divided into two categories, namely, lubricating oil and oil-free lubrication, while taking into account the high price of oil-free screw machines, at present, injection screw machines are usually used. Molecular sieve microporous particles, many carrying oil compressed air, will lead to pore blockage, thereby reducing the efficiency of the molecular sieve, the output of the equipment, and such damage is not recoverable, high-quality selection, small amount of air compressor oil, is one of the key factors to ensure the normal operation of the system.

Air purification: Due to the presence of water, food, compressed air of oil, these impurities are destructive to the molecular sieve, therefore, the cooling of the system (air filter and cold dryer, dryer, etc.) must be treated to remove oil in order to protect the purpose of the molecular sieve. The high quality of the air treatment system is also one of the key factors to ensure the normal operation of the nitrogen production device.

PSA nitrogen production: is the core and key technical point of the whole process, known as the former.