Inert nitrogen generator NITROBERG®

dryhigh-purityUHP

Overview
NITROBERG® PSA nitrogen generators produce nitrogen on site from compressed air at selectable purities from 97 % to 99.999 % and flow rates from 1.2 to 1,709.1 Nm³/h across 18 sizes. Skid-mounted units connect to the customer's compressed-air supply and replace cylinder or bulk deliveries and long-term supply contracts. Engineered and manufactured in Germany. Standard wear parts are available on the open market. Warranty: three years standard, up to five years with a service contract.

The Technology
A Pressure Swing Adsorption (PSA) nitrogen generator separates nitrogen from compressed air without chemical reaction or cryogenic cooling. Compressed air at 5–10 bar passes through a bed of Carbon Molecular Sieve (CMS) tuned to retain oxygen, CO2 and residual water vapour while allowing nitrogen to pass and be collected in a buffer tank. With properly treated compressed air the CMS remains effective for years. The only continuous input is compressed air; the continuous output is industrial-grade nitrogen at the set purity (97 % up to 99.999 %).

The PSA Cycle — five steps

• Adsorption (Tower A). Treated compressed air enters the adsorber at 5–10 bar. CMS retains oxygen, CO2 and water vapour; nitrogen passes through to the buffer tank.
• Pressure Equalization (A → B). Part of Tower A’s high-purity nitrogen is routed into Tower B to pre-pressurise it, saving compressed air and smoothing changeover.
• Desorption (Tower B). Tower B is depressurised to atmospheric pressure; oxygen released from the sieve is vented to atmosphere.
• Purge (Tower B). A small nitrogen back-flow sweeps Tower B clean of residual oxygen, preparing the sieve for the next adsorption cycle.
• Switch. Tower B takes over production while Tower A regenerates; towers alternate continuously (typical cycle 60–120 seconds per tower) so the buffer tank sees a continuous nitrogen flow.

Technical Specifications (summary)
Purity: 97 % – 99.999 %
N₂ Flow (range): 1.2 – 1,709.1 Nm³/h
Compressed-Air Demand: 7.7 – 3,930.8 Nm³/h (varies by model and purity)
Operating Pressure: 5 – 10 bar
Family size: 18 models (NITROBERG® 500 to 4000)
Typical cycle time per tower: 60–120 seconds
Wear parts: standard off-the-shelf filters, valves, Carbon Molecular Sieve
Certifications: PED 2014/68/EU, Notified Body NB 2912 (Module B + D)
Warranty: 3 years standard; up to 5 years with service contract.

Key Features

• Adjustable Purity Control: Purity set in the controller and changed to match application; running at 97 % vs 99.999 % reduces air consumption roughly two thirds.
• Scalable Across 18 Sizes: Family covers the industrial range from small laboratory lines up to process plants drawing more than a thousand Nm³/h.
• Standard Wear Parts: Filters, valves and Carbon Molecular Sieve are off-the-shelf and available on the open market (no proprietary spare-parts lock-in).
• Cycle Engineered for CMS Life: Cycle timing and pressure equalisation tuned to protect the sieve and keep replacements on planned intervals.
• Certifications: PED 2014/68/EU, Notified Body NB 2912 (Module B + D).

Model Matrix (N₂ output / Compressed-Air demand — values in Nm³/h). Operating pressure: 5–10 bar.
Header: Model | 97% (N₂ / Comp. Air) | 98% (N₂ / Comp. Air) | 99% (N₂ / Comp. Air) | 99.5% (N₂ / Comp. Air) | 99.9% (N₂ / Comp. Air) | 99.99% (N₂ / Comp. Air) | 99.995% (N₂ / Comp. Air) | 99.999% (N₂ / Comp. Air)

NITROBERG® 500 | 97%: N₂ 10.7 / Air 24.6 | 98%: N₂ 8.6 / Air 19.8 | 99%: N₂ 7.1 / Air 18.5 | 99.5%: N₂ 6.2 / Air 18.0 | 99.9%: N₂ 4.1 / Air 13.9 | 99.99%: N₂ 2.2 / Air 10.1 | 99.995%: N₂ 1.7 / Air 8.8 | 99.999%: N₂ 1.2 / Air 7.7
NITROBERG® 600 | 97%: N₂ 19.3 / Air 44.3 | 98%: N₂ 15.5 / Air 35.6 | 99%: N₂ 12.8 / Air 33.2 | 99.5%: N₂ 11.2 / Air 32.4 | 99.9%: N₂ 7.4 / Air 25.1 | 99.99%: N₂ 4.0 / Air 18.2 | 99.995%: N₂ 3.1 / Air 15.9 | 99.999%: N₂ 2.2 / Air 13.8
NITROBERG® 700 | 97%: N₂ 30.0 / Air 68.9 | 98%: N₂ 24.1 / Air 55.4 | 99%: N₂ 19.9 / Air 51.7 | 99.5%: N₂ 17.4 / Air 50.3 | 99.9%: N₂ 11.5 / Air 39.0 | 99.99%: N₂ 6.2 / Air 28.3 | 99.995%: N₂ 4.8 / Air 24.8 | 99.999%: N₂ 3.4 / Air 21.5
NITROBERG® 800 | 97%: N₂ 42.8 / Air 98.4 | 98%: N₂ 34.4 / Air 79.1 | 99%: N₂ 28.4 / Air 73.8 | 99.5%: N₂ 24.8 / Air 71.9 | 99.9%: N₂ 16.4 / Air 55.8 | 99.99%: N₂ 8.8 / Air 40.5 | 99.995%: N₂ 6.8 / Air 35.4 | 99.999%: N₂ 4.8 / Air 30.7
NITROBERG® 900 | 97%: N₂ 65.9 / Air 151.6 | 98%: N₂ 53.0 / Air 121.8 | 99%: N₂ 43.7 / Air 113.7 | 99.5%: N₂ 38.2 / Air 110.8 | 99.9%: N₂ 25.3 / Air 85.9 | 99.99%: N₂ 13.6 / Air 62.3 | 99.995%: N₂ 10.5 / Air 54.5 | 99.999%: N₂ 7.4 / Air 47.3
NITROBERG® 1000 | 97%: N₂ 89.9 / Air 206.7 | 98%: N₂ 72.2 / Air 166.2 | 99%: N₂ 59.6 / Air 155.1 | 99.5%: N₂ 52.1 / Air 151.0 | 99.9%: N₂ 34.4 / Air 117.1 | 99.99%: N₂ 18.5 / Air 85.0 | 99.995%: N₂ 14.3 / Air 74.3 | 99.999%: N₂ 10.1 / Air 64.5
NITROBERG® 1100 | 97%: N₂ 117.7 / Air 270.7 | 98%: N₂ 94.6 / Air 217.6 | 99%: N₂ 78.1 / Air 203.1 | 99.5%: N₂ 68.2 / Air 197.8 | 99.9%: N₂ 45.1 / Air 153.3 | 99.99%: N₂ 24.2 / Air 111.3 | 99.995%: N₂ 18.7 / Air 97.2 | 99.999%: N₂ 13.2 / Air 84.5
NITROBERG® 1200 | 97%: N₂ 145.5 / Air 334.7 | 98%: N₂ 117.0 / Air 269.0 | 99%: N₂ 96.6 / Air 251.1 | 99.5%: N₂ 84.3 / Air 244.5 | 99.9%: N₂ 55.8 / Air 189.6 | 99.99%: N₂ 29.9 / Air 137.6 | 99.995%: N₂ 23.1 / Air 120.2 | 99.999%: N₂ 16.3 / Air 104.4
NITROBERG® 1300 | 97%: N₂ 205.4 / Air 472.5 | 98%: N₂ 165.1 / Air 379.8 | 99%: N₂ 136.3 / Air 354.4 | 99.5%: N₂ 119.0 / Air 345.2 | 99.9%: N₂ 78.7 / Air 267.6 | 99.99%: N₂ 42.2 / Air 194.3 | 99.995%: N₂ 32.6 / Air 169.7 | 99.999%: N₂ 23.0 / Air 147.5
NITROBERG® 1400 | 97%: N₂ 286.8 / Air 659.5 | 98%: N₂ 230.5 / Air 530.1 | 99%: N₂ 190.3 / Air 494.7 | 99.5%: N₂ 166.2 / Air 481.9 | 99.9%: N₂ 109.9 / Air 373.6 | 99.99%: N₂ 59.0 / Air 271.2 | 99.995%: N₂ 45.6 / Air 236.9 | 99.999%: N₂ 32.2 / Air 205.8
NITROBERG® 1500 | 97%: N₂ 402.3 / Air 925.3 | 98%: N₂ 323.4 / Air 743.7 | 99%: N₂ 267.0 / Air 694.1 | 99.5%: N₂ 233.1 / Air 676.0 | 99.9%: N₂ 154.2 / Air 524.1 | 99.99%: N₂ 82.7 / Air 380.5 | 99.995%: N₂ 63.9 / Air 332.4 | 99.999%: N₂ 45.1 / Air 288.8
NITROBERG® 1600 | 97%: N₂ 494.9 / Air 1,138.2 | 98%: N₂ 397.7 / Air 914.8 | 99%: N₂ 328.4 / Air 853.7 | 99.5%: N₂ 286.7 / Air 831.5 | 99.9%: N₂ 189.6 / Air 644.7 | 99.99%: N₂ 101.7 / Air 468.0 | 99.995%: N₂ 78.6 / Air 408.8 | 99.999%: N₂ 55.5 / Air 355.2
NITROBERG® 1700 | 97%: N₂ 579.3 / Air 1,332.5 | 98%: N₂ 465.6 / Air 1,071.0 | 99%: N₂ 384.4 / Air 999.5 | 99.5%: N₂ 335.7 / Air 973.5 | 99.9%: N₂ 222.0 / Air 754.8 | 99.99%: N₂ 119.1 / Air 547.9 | 99.995%: N₂ 92.0 / Air 478.6 | 99.999%: N₂ 65.0 / Air 415.8
NITROBERG® 1800 | 97%: N₂ 792.6 / Air 1,822.9 | 98%: N₂ 637.0 / Air 1,465.1 | 99%: N₂ 525.9 / Air 1,367.4 | 99.5%: N₂ 459.2 / Air 1,331.8 | 99.9%: N₂ 303.7 / Air 1,032.6 | 99.99%: N₂ 163.0 / Air 749.6 | 99.995%: N₂ 125.9 / Air 654.8 | 99.999%: N₂ 88.9 / Air 568.9
NITROBERG® 1900 | 97%: N₂ 974.9 / Air 2,242.2 | 98%: N₂ 783.5 / Air 1,802.1 | 99%: N₂ 646.9 / Air 1,681.9 | 99.5%: N₂ 564.9 / Air 1,638.1 | 99.9%: N₂ 373.5 / Air 1,270.1 | 99.99%: N₂ 200.4 / Air 922.0 | 99.995%: N₂ 154.9 / Air 805.4 | 99.999%: N₂ 109.3 / Air 699.7
NITROBERG® 2000 | 97%: N₂ 1,141.3 / Air 2,625.0 | 98%: N₂ 917.3 / Air 2,109.8 | 99%: N₂ 757.3 / Air 1,969.0 | 99.5%: N₂ 661.3 / Air 1,917.8 | 99.9%: N₂ 437.3 / Air 1,486.9 | 99.99%: N₂ 234.7 / Air 1,079.4 | 99.995%: N₂ 181.3 / Air 942.9 | 99.999%: N₂ 128.0 / Air 819.2
NITROBERG® 3000 | 97%: N₂ 1,459.8 / Air 3,357.6 | 98%: N₂ 1,173.3 / Air 2,698.6 | 99%: N₂ 968.7 / Air 2,518.5 | 99.5%: N₂ 845.9 / Air 2,453.0 | 99.9%: N₂ 559.4 / Air 1,901.9 | 99.99%: N₂ 300.1 / Air 1,380.7 | 99.995%: N₂ 231.9 / Air 1,206.1 | 99.999%: N₂ 163.7 / Air 1,047.8
NITROBERG® 4000 | 97%: N₂ 1,709.1 / Air 3,930.8 | 98%: N₂ 1,373.6 / Air 3,159.4 | 99%: N₂ 1,134.0 / Air 2,948.5 | 99.5%: N₂ 990.3 / Air 2,871.9 | 99.9%: N₂ 654.9 / Air 2,226.6 | 99.99%: N₂ 351.4 / Air 1,616.4 | 99.995%: N₂ 271.5 / Air 1,412.0 | 99.999%: N₂ 191.7 / Air 1,226.7

Applications (typical)
PSA is commonly used where applications need 99 % purity or higher with a stable continuous supply: food & beverage, food packaging, pharmaceutical, laboratory & mass spectrometry, chemical inertisation, laser cutting, electronics & soldering, plastics & packaging, oil & gas, maritime/shipping.

Lifecycle & Service Notes
Under properly treated compressed air (dried, filtered, oil-free) the Carbon Molecular Sieve typically remains effective for 8–12 years. Dominant failure modes are upstream contamination (liquid water, oil carry-over, particulate breakthrough). Standard compressed-air treatment chain is recommended (water separator, dryer, fine filters, activated-carbon, dust filter) to protect the sieve and ensure long service intervals.