Nitrogen generator
PSA Nitrogen generator
Technical Data
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| Model | Nitrogen Outlet Flow Rate(Nm³/hr) | |||||
|---|---|---|---|---|---|---|
| 99.999% | 99.99% | 99.90% | 99.50% | 99% | 98% | |
| NGP-5 | 3 | 5 | 8 | 10 | 13 | 21 |
| NGP-10 | 6 | 10 | 16 | 21 | 26 | 43 |
| NGP-15 | 9 | 15 | 24 | 32 | 40 | 64 |
| NGP-20 | 12 | 20 | 32 | 43 | 53 | 86 |
| NGP-30 | 18 | 30 | 49 | 64 | 80 | 129 |
| NGP-40 | 24 | 40 | 65 | 86 | 107 | 172 |
| NGP-CR30 | 18 | 30 | 49 | 64 | 80 | 129 |
| NGP-CR40 | 24 | 40 | 65 | 86 | 107 | 172 |
| NGP-CR50 | 30 | 50 | 82 | 108 | 134 | 215 |
| NGP-CR60 | 36 | 60 | 98 | 129 | 161 | 258 |
| NGP-CR70 | 42 | 70 | 114 | 151 | 188 | 301 |
| NGP-CR80 | 48 | 80 | 131 | 173 | 215 | 344 |
| NGP-CR100 | 61 | 100 | 164 | 216 | 269 | 430 |
| NGP-CR120 | 73 | 120 | 196 | 259 | 322 | 516 |
| NGP-CR150 | 91 | 150 | 246 | 324 | 403 | 645 |
| NGP-CR200 | 122 | 200 | 328 | 433 | 537 | 860 |
| NGP-CR250 | 152 | 250 | 410 | 541 | 672 | 1075 |
| NGP-CR300 | 182 | 300 | 492 | 649 | 806 | 1291 |
| NGP-CR500 | 304 | 500 | 820 | 1082 | 1344 | 2151 |
Technical Data
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| Model | Inlet Air Required | ||
|---|---|---|---|
| Nitrogen Outlet Flow Rate 99.99%(Nm³/hr) | Inlet Air Required(Nm³/hr) | Desiccant Air Dryer Inlet Air Required(Nm³/hr) | |
| NGP-5 | 5 | 30.0 | 34.5 |
| NGP-10 | 10 | 60.0 | 69.0 |
| NGP-15 | 15 | 90.0 | 103.5 |
| NGP-20 | 20 | 120.0 | 138.0 |
| NGP-30 | 30 | 180.0 | 207.0 |
| NGP-40 | 40 | 240.0 | 276.0 |
Nitrogen Outlet Pressure : 0.5MPa
Minimum Air Inlet pressure : 0.75MPa
Ambient Temperature : 5℃ ~ 45℃
Inlet Air Quality : -20℃ Dew point | Particulate < 0.1 Micron | Oil < 0.01 mg/m³
PSA definition
- PSA(Pressure Swing Absorption) stands for Pressure Swing Absorption and refers to a device that uses absorption of pressure to separate gaseous components.
Advantage of PSA Generator
Economy
- No problems in purchase, transport, storage and maintenance (separate) of material (liquid nitrogen) Pay-back (ROI) period compared to the investment cost of N2 generator is very fast.
Safety
- It is not regulated by the high pressure gas handling law since it is a low pressure operation (typically 0.5 MPa) .Except senior safety officer responsibility.
Convenience
- All operations are controlled automatically unmanned and nitrogen can be supplied continuously.
Minimize a yearly operational cost (maintenance, management)
- Inhibited the loss due to electrical and mechanical defects by applying safe parts for equipment component with durability and trust.
PSA N₂ Generator
Developed Korea's first energy-saving ECO System
- Automatic air volume control function according to the change of nitrogen used(Save about 50% of energy cost when VSD compressor is applied)
patent application for inverter function
Sol / Valve Test function – Check if the System is normal
Set nitrogen purity / alarm function when pressure changes
- Optimum supply of nitrogen possible
Group Control (Option)
- Use of communication between PC and system, Main D.C.S possible.
- Possible to control purity, pressure, flow rate
- Recording function
Touch Screen function
- Check operation and status of nitrogen generator
- Password function
- LCD Display
Flow Diagram of N₂ PSA
P.S.A
Air configuration
PSA process
- There are two adsorption towers charged with CMS within. First, when compressed air comes in to an Adsorption tower A, oxygen, carbon dioxide and moisture is absorbed to CMS under the pressurized state, nitrogen and argon which are mostly not absorbed pass through the absorption tower. (Adsorption process) Typically in 1~2 minutes, an adsorption process in Adsorption Tower A is completed, and compressed air is introduced by the same manner to Adsorption tower B to continue to produce nitrogen products. While Adsorption Tower B is performing the process of adsorption, Adsorption Tower A desorbs the adsorbed oxygen by reducing the pressure to either to atmospheric or to vacuum pressure and cleans CMS. (revitalizing process). The nitrogen product can be produced continuously by alternately repeating this adsorption process and regeneration process.
CMS (Carbon Molecular Sieve)
CMS (Carbon Molecular Sieve)
It is possible to separate by selectively adsorb molecules in the air, and is the primary material for PSA device and its main ingredient is palm skin
Nitrogen gas (N₂)
- Molecule weight : 28.01
- Molecule diameter : 4.3 x 3.0Å
- Ratio of component in air : 78.09%
- It is difficult to combine with other substance, and is called an industrial inert gas for its cheap price.
Oxygen gas(O₂)
- Molecule weight : 31.99
- Molecule diameter : 3.9 x 2.8Å
- Ratio of component in air : 20.95%
- It is easy to combine with other substance and is called supporting gas.
- * Oxygen molecule (Molecule diameter : 3.9*2.8Å) adsorbs faster than nitrogen molecule(Molecule diameter : 4.3*3.0Å) in comparison due to the diffusion speed difference, and nitrogen PSA by CMS method is manufactured by using the adsorption speed difference of more than 30 times.
PSA method oxygen/nitrogen separation configuration
1.CMS consists of myriad of small holes(Å).
When compressed air is routed to CMS, oxygen, which has a small molecular diameter, is adsorbed first and the nitrogen, with a larger molecule diameter, is difficult to adsorb.
2. Nitrogen not adsorbed is used as product nitrogen.
3. Adsorbed oxygen molecule is released to atmosphere pressure and is regenerated.
4. Continuous use is possible by repetition of this cycle.
* Nitrogen molecules with a large diameter is difficult to get into CMS, and therefore only nitrogen remains.
Technical Data
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| Liquid nitrogen (LN₂) | Nitrogen gas (N₂) | |||
|---|---|---|---|---|
| kg | Liter | 0℃(m³) | 15℃(m³) | 35℃(m³) |
| 1.00 | 1.23 | 0.80 | 0.84 | 0.90 |
| 0.80 | 1.00 | 0.64 | 0.68 | 0.72 |
| 1.25 | 1.54 | 1.00 | 1.05 | 1.12 |
| 1.18 | 1.46 | 0.94 | 1.00 | 1.06 |
| 1.10 | 1.37 | 0.88 | 0.93 | 1.00 |