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Nitrogen Generator System Principle

Nitrogen generator is an advanced gas separation technology, high-quality imported carbon molecular sieve (CMS) as adsorbent, using pressure swing adsorption at room temperature (PSA) separation of air to produce high purity nitrogen.

Nitrogen generator system principle

Oxygen and nitrogen have different diffusion rates on the surface of molecular sieves. The smaller diffusion rate of gas molecules (O2) is faster, and the diffusion rate of gas molecules (N2) Slow, into the carbon molecular sieve pores less. The use of carbon molecular sieves for the selective adsorption of nitrogen and oxygen differences, resulting in a short time in the adsorption of oxygen in the adsorption phase, nitrogen enrichment in the gas phase, such as oxygen and nitrogen separation, in the PSA conditions to get gas phase nitrogen.

Carbon molecular sieve on the oxygen and nitrogen at different pressures at a certain time the amount of adsorption changes in the curve:

After a period of time, the adsorption of oxygen on the molecular sieve to balance, according to carbon molecular sieve at different pressures on the adsorbed gas adsorption capacity of different characteristics, reduce the pressure of carbon molecular sieve to remove the adsorption of oxygen, the process for regeneration. According to the different regeneration pressure, can be divided into vacuum regeneration and atmospheric regeneration. Atmospheric regeneration is conducive to the complete regeneration of molecular sieve, easy to obtain high purity gas.

PSA nitrogen generator (PSA nitrogen generator) is designed and manufactured by pressure swing adsorption technology, the production of nitrogen equipment. Usually using two adsorption tower in parallel, by the automatic control system according to a specific programmable strict control of the timing, alternating pressure adsorption and decompression regeneration, complete nitrogen and oxygen separation, access to the required high purity nitrogen.

The dynamic adsorption capacity and separation coefficient of carbon molecular sieve (CMS) determine the quality of nitrogen generator.

Zhejiang Yuanda Air Separation Equipment Co.Ltd.

Add.: Gaoqiao Industrial Zone, Hangzhou, Zhejiang, China  311402


Contact: Jane Qian +86-13588376592



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