|Dew Point::||-60℃-70℃||N2 Capacity::||10-500Nm3/h|
|Raw Material N2 Purity::||99.9%||Color::||As Customers' Requirements|
gas purification system,
nitrogen gas system
99.9995% Carbon Deoxidization Nitrogen Purification System 5ppm O2 Low Noise
I,Nitrogen generator system design
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.
Remark:We suggest air compressor prepare a spare set,to confirm the produce stable.
2. Compressed air clarification system
Compressed air pass through 9 grade filters,then pass through cooling type dryer.let the compressed air cooling,let the vapour in the air condensation into water,along with dust,oil drain out the machine.It’s better to put the cooling dryer in the compressed room.
After the cooling dryer is the filters,there are two group filters,one is 7 grade main pipeline filters,another is 5 grade high quality oil removing filter.7 grade main pipeline filter precision is 1um,filter out 1um and larger solid state and liquid particle,vestigital oil content 1ppm w/w.5 grade high quality oil removing filter filtrate precision 0.01um,remove 0.01um and larger solid state and liquid particle, 99.9999+% oil,the rest oil content 0.001 ppm w/w. Compressed air quality can reach 1 class according to ISO8573.1. Such clean and dry compressed air can inlet active carbon filter,air buffer tank then inlet nitrogen generator part,after PSA device make out the nitrogen purity ≥99%.
Pressure swing adsorption (PSA) is an advanced gas separate technique,it is widely used in gas supply field in the world.
1 .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..
1.2 PSA principal
Bec ause 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.
1.3 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 :
2. Fully intelligent, automated, easier to operate
Microcomputer control and (industrial computer system) touch screen control are built in the machine. From the microcomputer touch screen, we can understand the nitrogen generator as follows:
(1) Real-time working condition, total running time, working process and opening and closing statement of the valve.
(2) When operating, just need to turn on and off the machine, set the parameters and view the system fault information through the touch screen.
It truly realizes the unattended duty, intelligent and automated operation of the equipment. It can function as the real-time monitoring equipment of the user’s control room. If required, we can monitor distantly parameters such as the flow of finished nitrogen, purity, pressure in the user’s DCS system.
Normal purity N2 generator main parts.
|PSA adsorption tower||Professional design||
|Vortex airflow||Professional design||2 pieces||Technical Carbotech from Germany|
|Self complement compact device||Professional design||2sets||Jiangyin Tongyue|
|single unit processing part||/||1 set||SMC-Japan|
|Sample pressure reduce valve||/||1 piece||SMC-Japan|
|Direct current 24V power||/||1 set||Taiwan-Mingwei|
|DN65||5 pieces||Burkert Germany,approve|
|Magnetic valve||4V210-24V||10 pieces||Taiwan Airtac|
|Metal flow meter||LZZ-40||1 piece||Changzhou Shuanghuan|
|Control system||TPC7062K||1set||(color touch screen )Kunlun Tongtai|
|Muffler||TY-170X||1 set||Jiangyin Tongyue|
|Pipe valve system||bprofessional produce||1 set||Jiangyin Tongyue|
|PLC controller||S7-200||1 set||Siemens Germany|
|Nitrogen analyzer||P860-4N||1 set||Shanghai Changai|