The basic principle of PSA nitrogen production process is: the adsorbent (carbon molecular sieve) has different adsorption capacity on the adsorption medium under different pressures, and has selective adsorption characteristics for the components of the separated gas mixture under a certain pressure, so as to obtain the gas with certain purity. The factors affecting the purity of nitrogen in PSA nitrogen production process include the quality of feed gas, the working period of adsorption column, adsorption temperature and so on.
