According to the principle of pressure swing adsorption, a high quality carbon molecular sieve was used as adsorbent. After purification of dry compressed air, the pressure of adsorption and desorption in vacuum adsorber. Due to the aerodynamic effect, the diffusion rate of oxygen in carbon molecular sieves is much larger than that of nitrogen, and the oxygen is preferentially adsorbed by carbon molecular sieve. Then, after the pressure is reduced to normal pressure, the adsorbent can adsorb the adsorbed oxygen and other impurities, so as to realize regeneration.
Today we talk about the reason and solution of the purity of nitrogen generator:
First, the reasons for the decline in purity:
1, nitrogen adsorption pressure instability, such as too high, more than 0.8Mpa or adsorption pressure is too low, less than 0.6Mpa;
2, the source of excessive water content of oil;
3, the outlet part of air interface;
4, the volume of air pressure over the ambassador too fast;
5, nitrogen machine molecular sieve poisoning.
Two, there are several ways to improve the nitrogen making machine nitrogen purity solution:
1, reduce the gas pressure, increasing the intake pressure;
2, air inlet and a storage tank;
3, remove the plug again;
4, the replacement of molecular sieve;
5, adjust the nitrogen inlet valve to reduce the intake valve, before the installation of oil-water separator.
