Products / Nitrogen Generator / Nitrogen Generators (NG) with Pressure Swing Adsorption (PSA) technology
Nitrogen Generators (NG) with Pressure Swing Adsorption (PSA) technology
Atlas Copco's Nitrogen Generators (NG) offer a cost-effective means for on-site gas generation. Including nitrogen models sized for a wide range of flow rates and product purities, the NG series stands for exceptional versatility and efficiency.
Nitrogen Generator Highlights

PSA Nitrogen Generator NG
- Proven technology, simple, reliable and durable
- Your own independent on-site supply of nitrogen
- Continuous availability
- The exact nitrogen purity your application demands
- Low operating costs for extra cost-efficiency
- Elimination of safety hazards such as handling high pressure cylinders
- Customized engineering and modularity to meet your requirements
- World-class expertise in a unique market offer from compressor to nitrogen gas
For more information, please contact us or visit our products website.
Based on Pressure Swing Adsorption (PSA) technology, Atlas Copco's Nitrogen Generator series provide a continuous flow of nitrogen at desired purity.
By using Carbon Molecular Sieve (CMS), oxygen is selectively separated while continuous N2 is production is ensured.
Straightforward Two-Phase Process

PSA Technology
Adsorption
High-pressure air flows through the columns filled with Carbon Molecular Sieve (CMS). By pressurizing the vessel as such, oxygen molecules are adsorbed preferentially by the CMS while nitrogen molecules pass on thanks to their different molecular size. The sieve continues to adsorb oxygen until a saturation point is reached.
Regeneration (desorption)
The entering air stream is cutt off and the oxygen is able to leave the vessel at low pressure. Two connected vessels work together to product a near-continuous flow of nitrogen gas.
Efficient Separation
While ordinary activated carbons are unable to separate nitrogen from the air, Carbon Molecular Sieve is a substance with discrete pore structures which can separate the molecules on the basis of their size. Through this high absorption selectivity, Carbon Molecular Sieve allows efficient nitrogen separation. The small oxygen molecules will penetrate the pores while the large nitrogen molecules will by-pass the carbon molecular sieve.
Animation
This animation explains the PSA technology.