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Operating principle of nitrogen generator
- Sep 19, 2018 -

The nitrogen generator is mainly used to prepare high-purity nitrogen. The device utilizes advanced gas separation technology, uses high-quality adsorbent, and uses the principle of pressure swing adsorption at normal temperature to separate the nitrogen required for air production. During the separation process, the diffusion rates of oxygen and nitrogen gas molecules on the surface of the molecular sieve are different.

 

Therefore, during the operation of the nitrogen generator, the diffusion of oxygen molecules with smaller diameters is faster, and more of the pores entering the carbon molecular sieve, the diffusion rate of the larger diameter gas molecules (N2) is slower, and the micropores entering the carbon molecular sieve are relatively slower. less. The selective adsorption difference between nitrogen and oxygen by carbon molecular sieve leads to the enrichment of oxygen in the adsorption phase in a short time, the enrichment of nitrogen in the gas phase, so that the oxygen and nitrogen are separated, and the gas phase enriched nitrogen is obtained under the PSA condition.

 

It can be seen that the carbon molecular sieve has an important influence on the performance of the whole device in the process of preparing nitrogen gas by the nitrogen generator. It can be said that the performance of the dynamic adsorption amount and the separation coefficient of the carbon molecular sieve (CMS) determines the quality of the nitrogen generator.http://www.cnrelita.com/


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