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High nitrogen purity
PSA nitrogen generator plants allow production of high-purity nitrogen from air, which membrane systems are unable to provide - up to 99.9995% nitrogen. This nitrogen purity may also be ensured by cryogenic systems, but they are considerably more complex and justified only by large consumption volumes. The nitrogen generators use CMS (carbon molecular sieve) technology to produce a continuous supply of ultra high purity nitrogen and are available with internal compressors or without.
Low operating costs
By substitution of out-of-date air separation plants nitrogen production savings largely exceed 50%.[citation needed]
The net cost of nitrogen produced by nitrogen generators is significantly less than the cost of bottled or liquefied nitrogen.
Nitrogen Generators Create Less Impact on the Environment
Generating nitrogen gas is a sustainable, environmentally friendly and energy efficient approach to providing pure, clean, dry nitrogen gas. Compared to the energy needed for a cryogenic air separation plant and the energy needed to transport the liquid nitrogen from the plant to the facility, generated nitrogen consumes less energy and creates far fewer greenhouse gases.

KNA-1500-99.6% PSA technology VS KNB-1500-99.6% Membrane Technology


 PSA technology 

 Membrane Technology

Nitrogen output           Nm3/h


Nitrogen purity               %


Nitrogen installation power     KW



Air compressor installation power    KW



Power supply                        V/HZ



Compress air consumption     Nm3/min



Compress air inlet pressure           MPa



The best adsorption pressure should be 8-9 barg, it would be wide selection scale for air compressor

The best adsorption pressure should be 12 barg, it would be specified required for air compressor

Key component using life

Carbon Molecular sieve for 8 years

Membrane for 4-5 years

Control type

PLC, Auto control

PLC, Auto control

Occupied land(M)(LxWxH)




55DB(Maximum instant 85DB)

55DB(Maximum instant 85DB)

Environmental Requirements

Indoors, ventilation,38ºC

Indoors, ventilation,38ºC

Investment cost

Nitrogen Generator

About $225000 

About $799000

Screw air compressor

About $93000

About $150000 

No matter from points of energy consumption, land, investment, maintenance cost, the PSA technology is a better Choice!!

Why choose Yuanda KNA series PSA Nitrogen Generator 
1) Purity: 95-99.9999%
2) Capacity: 5-8000Nm3/h
3) Pressure out: 0-0.8Mpa (1.0~15.0MPa is also available)
4) Dew point: -45 degree-- -70
Technical Features
1). Imported pneumatic valves, using life is more than 3 million times;
2). Siemens PLC Intelligent program controller, easy and stable operation;
3). Specific inert ceramic balls diffusion technology makes airflow distribution evenly; improve the adsorption efficiency for adsorbent;
4). Self-force cylinder compress device (Patent No.: ZL-200820168079.9) to protect the using life of the carbon molecular sieve;
5.) Original centrifugal vibration Filling (Patent No.: ZL-200820168078.4) effectively ensure the maximum filling volume.