99.99% & 7 bar N2 nitrogen generator for electron SMT processing and purging system
What is PSA nitrogen?
PSA is short for pressure swing adsorption.
Pressure
Elevated pressures, normally 5-10 bar(g), are needed for the process. Higher pressure can be applied, if required.
Swing
Two vessels work in counter phase in terms of pressurising and depressurising.
Adsorption
The PSA principle is applied for separation of atmospheric air where nitrogen
How does it work?
On-site nitrogen generators are based on the well-known PSA (pressure swing adsorption) technology. Two pressurised vessels with molecular sieves ensure continuous production for separation of nitrogen from other gases.
Nitrogen generator consists of two pressure vessels storing carbon molecular sieves (CMS).
Dry compressed air is blown through a valve to the first vessel where the pressure is built to reach 5 to 10 bar(g). The unwanted gas (oxygen) is adsorbed by the pellets during the building of pressure, and the nitrogen will pass through to the accumulation tank.
While pressure is building up in one vessel, the other vessel is regenerating through a decrease in pressure, all to guarantee a continuous flow. Before the subsequent adsorption or desorption stage, a pressure equalisation between the adsorption vessels will take place. When the pressure decreases in the first vessel, and the CMS pellets are saturated, the waste product is exhausted through the exhaust system. The pressure in the second vessel will now build up until the pressure between both vessels is once again equalised.
Advantages of PSA
The process of the pressure swing adsorption (PSA) technology is an extremely clean operation. The only ‘raw material’ is air.
On-site nitrogen generators allow for an uninterrupted supply of gas with a high purity output. This means that you can produce nitrogen where and when you need it, and in the exact quantity and quality you need.
PSA is a cost-efficient process for producing high purity nitrogen.
For an uninterrupted production of gas this process is continuously repeated.
Our PSA nitrogen generators can produce purities between 95-99.9999% (1 ppm) nitrogen.
Features of PSA system :
- Compact, modular, well-proven design
- Automatic, unattended operation with advanced monitoring and control system
- Low specific power
- Low maintenance
- Higher capacity units can be UIG owned and operated to provide hassle-free, low-cost onsite-produced nitrogen.
- Units are available for purchase, with lease-purchase as an option
| Item | Nitrogen purity (Nm3/hr) | Dimensions | Weight |
| 95% | 99% | 99.5% | 99.9% | 99.99% | 99.995% | 99.999% | (L*W*H) mm | KG |
| OSP5 | 21 | 13 | 11 | 8 | 5 | 4.2 | 3 | 1100*600*1700 | 300 |
| OSP10 | 38 | 29 | 25 | 15 | 10 | 7.5 | 6.1 | 1200*650*1800 | 350 |
| OSP20 | 80 | 56 | 52 | 32 | 20 | 16 | 14 | 1600*1000*2200 | 450 |
| OSP40 | 160 | 116 | 105.2 | 67.2 | 40 | 34 | 28 | 1800*1000*2200 | 600 |
| OSP60 | 252 | 174 | 157.8 | 100.8 | 60 | 51 | 45 | 1900*1200*2200 | 750 |
| OSP80 | 339.2 | 232 | 211 | 132 | 80 | 70 | 62 | 2000*1200*2400 | 980 |
| OSP100 | 420 | 290 | 263 | 168 | 100 | 90 | 78 | 2100*1600*2500 | 1300 |
| OSP150 | 630 | 435 | 394.5 | 252 | 150 | 135 | 120 | 2500*1800*2600 | 1600 |
| OSP200 | 848 | 580 | 526 | 336 | 200 | 180 | 160 | 2800*1900*2850 | 2200 |
| OSP250 | 1060 | 725 | 657.5 | 420 | 250 | 225 | 200 | 3100*2000*3200 | 2600 |
| OSP300 | 1270 | 870 | 780 | 500 | 300 | 260 | 240 | 3900*2600*3400 | 3850 |
| OSP400 | 1696 | 1160 | 1052 | 672 | 400 | 360 | 320 | 4500*3250*3600 | 5000 |
| OSP500 | 2120 | 1450 | 1300 | 840 | 500 | 450 | 400 | 4900*3600*3800 | 6500 |
| OSP600 | 2540 | 1740 | 1578 | 1000 | 600 | 540 | 480 | 5300*3600*3900 | 7800 |
| OSP800 | 3390 | 2320 | 2100 | 1340 | 800 | 720 | 640 | 5600*3900*4100 | 10200 |
| OSP1000 | 4240 | 2900 | 2630 | 1680 | 1000 | 900 | 800 | 5800*4000*4500 | 11800 |
Design reference :
Compressed air inlet pressure 7.5 bar(g)/108 psi(g)
Air quality 1.4.1 according to ISO 8573-1:2010
Nitrogen outlet pressure 6 bar(g)/87psi(g)
Nitrogen quality 1.2.1 according to ISO 8573-1:2010.
Designed working temperature max 50 ℃
Dew point at Nitrogen outlet - 40 ℃
Notes:
OSP nitrogen generator max working pressure 10 bar(g)/145psi(g)
Following request of PSA on-site nitrogen generator will be customized :
Working pressure ＞10 bar(g)/145 psi(g)
Dew point ＜ - 50 ℃
Plug and play
Movable/containerized
Other special requirements as per site conditions
Nitrogen Generator Applications
Here are the five most popular nitrogen generator applications in the industrial industry.
Food Packaging
Modified Atmosphere Packaging (MAP) with nitrogen and nitrogen-CO2 gas mixes are often used in the food packaging industry to preserve perishable items by preventing spoilage, ensuring freshness, maintaining flavour, and extending the product shelf life. Onsite nitrogen generation is highly beneficial in the food packaging industry to maintain a quality product. Food packagers can save hundreds of thousands of dollars by having an onsite system installed.
Beverage Storage, Transport, and Dispensing
Like the food industry, the beverage industry can also improve from having onsite nitrogen generating systems. These systems make it more efficient to transport beverages to end users such as juice packagers, vintners, breweries, and other manufacturers of beverage dispensing systems.
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