Nitrogen making machine is a physical method to obtain nitrogen by separating oxygen and nitrogen between air as raw materials. The adsorption of carbon molecular sieves for selective oxygen and nitrogen and the use of a nitrogen-oxygen separation method called PSA nitrogen production.

The method is an agile development of a new nitrogen production technology 70. Compared with the traditional nitrogen method, it has the characteristics of simple process flow, high degree of automation, fast gas production, low energy consumption, a wide range of commercial purity can be adjusted according to the needs of users, easy operation, low cost protection operation, and strong adaptability of the equipment.

Widely used for nitrogen and oxygen in this field are carbon molecular sieves and zeolite molecular sieves.

The separation of oxygen and nitrogen by molecular sieve is mainly based on the fact that the two gas molecular sieve appear different in the dispersion rate, and the carbon molecular sieve is a kind of molecular sieve with the adsorption performance of activated carbon and a certain carbon base. The smaller diameter of the dispersed gas is faster and more molecular sieve solid phase, so the gas phase can be rich in nitrogen.

After a period of time to reach equilibrium, oxygen molecular sieve adsorption, based on the characteristics of the adsorption gas adsorption amount of different pressure is not the same as carbon molecular sieve, carbon molecular sieve exemption oxygen adsorption downward pressure, this process is called regeneration.