Onsite Skid Mounted 99.9995% Nitrogen Generating Equipment

Onsite Skid Mounted 99.9995% Nitrogen Generating Equipment

Nitrogen Generating Equipment Working Principle

Under a certain pressure, using the large difference of the diffusion rate between nitrogen and oxygen from the air

in the carbon molecular sieve, a large number of oxygen is adsorpted by carbon molecular sieve, while nitrogen is

collected in a short time, to achieve separation of oxygen and nitrogen.

The adsorption capacity of carbon molecular sieve is significantly different with different oxygen

pressures, reducing the pressure will release oxygen from carbon molecular sieve, this make carbon molecular

sieve regeneration, then can be used repeatedly.

Using two adsorption towers, one for adsorption and nitrogen generator, the other for desorption and recycling.

They switch with each other, thus continuous output of high-quality nitrogen.

Nitrogen Generating Equipment Main parts

Nitrogen Generating Equipment Details

1.  Compressed air system

Air compressor supply the raw material air for the nitrogen generator. The nitrogen making system need high quality,stable pressure and enough air consumption.Air compressor should use the reliable, maintenance easily,low noise,screw air compressor.

2.  Pressure Swing Adsorption Nitrogen making system

Pressure swing adsorption (PSA) is an advanced gas separate technique,it is widely used in gas supply field in the world.

2 .1  Adsorbing material

Adsorbing material is the center part of PSA nitrogen generator,Normally use the the Carbon Molecular Sieve,it can adsorb the oxygen,CO2,water in the air,but can’t adsorb the nitrogen..

2.2  PSA principal

Because O2 and N2 these two gas molecule have diffusion rate difference on the molecule sieve surface,O2 smaller diameter can diffuse faster,most of them inlet micropore of CMS,the large diameter N2 diffuse slowly,less of them can inlet ,use this adsorption difference come true O2 and N2 separate.

2.3  PSA N2 making processing

(1) Inlet air:The air compressor press the air into transporting pipe,then use the compressed air clarification system to remove the water,oil,dust and so on,reach to air buffer tank,then pass through air buffer tank into two adsorption tower.

(2) Adsorption: When air inlet adsorption tower,during the pressure function,O2 and CO2 be adsorbed quickly.Formed N2 near the outlet position.

(3) Air outlet :When the adsorption process working in the best status(Adsorption N2:O2 is the smallest),open the outlet valve,transport the N2 into N2 buffer tank.

(4) Average pressure:After finished exhaust,rest some N2 in the tower,so let it into another tower adsorb again with new air.This process is finished when the pressure of two tower is the same,so called average pressure.

(5) Exhaust :After average pressure finished,need to releasing the air which adsorb by CMS to be ready for next adsorption,the programme will open the air releasing valve automatically,let the pressure in the tower back to the original status,meanwhile release the O2,CO2,so than the CMS can adsorb new air again.

(6) These two tower exchange work can got N2 purity 99.9 %

Please check below chart of CMS adsorb under different pressure of O2 and N2 :

Nitrogen Generating Equipment Pictures