Nitrogen generating units operation principle
The equipment operates as follows:
- Molecular sieve is used as an adsorbent. Lifetime is unlimited if incoming compressed air filtration is properly organised.
- Oxygen molecules are trapped in granules pores, releasing nitrogen molecules.
- Two columns operate in parallel (one in operation, another in regeneration mode). This ensures almost continuous nitrogen production.
- Nitrogen is separated from the air due to oxygen adsorption by molecular granules.
Technical specifications
Model | Demand | 95 | 96 | 97 | 98 | 99 | 99,5 | 99,9 | 99,95 %, 500 ppm |
99,99 %, 100 ppm |
99,995%, 50 ppm |
99,999 %, 10 ppm |
Nitrostrong 3 | m³/hour | 8,34 | 7,61 | 6,80 | 5,91 | 4,70 | 4,05 | 3,00 | 2,59 | 1,86 | 1,46 | 1,05 |
Nitrostrong 5 | m³/hour | 13,91 | 12,69 | 11,34 | 9,86 | 7,83 | 6,75 | 5,00 | 4,32 | 3,11 | 2,43 | 1,76 |
Nitrostrong 7 | m³/hour | 19,47 | 17,77 | 15,88 | 13,80 | 10,96 | 9,45 | 6,99 | 6,05 | 4,35 | 3,40 | 2,46 |
Nitrostrong 10 | m³/hour | 27,81 | 25,38 | 22,68 | 19,71 | 15,66 | 13,50 | 9,99 | 8,64 | 6,21 | 4,86 | 3,51 |
Nitrostrong 15 | m³/hour | 41,72 | 38,07 | 34,02 | 29,57 | 23,49 | 20,25 | 14,99 | 12,96 | 9,32 | 7,29 | 5,27 |
Nitrostrong 20 | m³/hour | 55,62 | 50,76 | 45,36 | 39,42 | 31,32 | 27,00 | 19,98 | 17,28 | 12,42 | 9,72 | 7,02 |
Nitrostrong 25 | m³/hour | 69,53 | 63,45 | 56,70 | 49,28 | 39,15 | 33,75 | 24,98 | 21,60 | 15,53 | 12,15 | 8,78 |
Nitrostrong 30 | m³/hour | 83,43 | 76,14 | 68,04 | 59,13 | 46,98 | 40,50 | 29,97 | 25,92 | 18,63 | 14,58 | 10,53 |
Nitrostrong 40 | m³/hour | 111,24 | 101,52 | 90,72 | 78,84 | 62,64 | 54,00 | 39,96 | 34,56 | 24,84 | 19,44 | 14,04 |
Nitrostrong 50 | m³/hour | 139,05 | 126,90 | 113,40 | 98,55 | 78,30 | 67,50 | 49,95 | 43,20 | 31,05 | 24,30 | 17,55 |
Nitrostrong 75 | m³/hour | 208,58 | 190,35 | 170,10 | 147,83 | 117,45 | 101,25 | 74,93 | 64,80 | 46,58 | 36,45 | 26,33 |
Nitrostrong 100 | m³/hour | 278,10 | 253,80 | 226,80 | 197,10 | 156,60 | 135,00 | 99,90 | 86,40 | 62,10 | 48,60 | 35,10 |
Nitrostrong 125 | m³/hour | 347,63 | 317,25 | 283,50 | 246,38 | 195,75 | 168,75 | 124,88 | 108,00 | 77,63 | 60,75 | 43,88 |
Nitrostrong 150 | m³/hour | 417,15 | 380,70 | 340,20 | 295,65 | 234,90 | 202,50 | 149,85 | 129,60 | 93,15 | 72,90 | 52,65 |
Nitrostrong 175 | m³/hour | 486,68 | 444,15 | 396,90 | 344,93 | 274,05 | 236,25 | 174,83 | 151,20 | 108,68 | 85,05 | 61,43 |
Nitrostrong 200 | m³/hour | 556,20 | 507,60 | 453,60 | 394,20 | 313,20 | 270,00 | 199,80 | 172,80 | 124,20 | 97,20 | 70,20 |
Nitrostrong 225 | m³/hour | 625,73 | 571,05 | 510,30 | 443,48 | 352,35 | 303,75 | 224,78 | 194,40 | 139,73 | 109,35 | 78,98 |
Nitrostrong 250 | m³/hour | 695,25 | 634,50 | 567,00 | 492,75 | 391,50 | 337,50 | 249,75 | 216,00 | 155,25 | 121,50 | 87,75 |
Nitrostrong 300 | m³/hour | 834,30 | 761,40 | 680,40 | 591,30 | 469,80 | 405,00 | 299,70 | 259,20 | 186,30 | 145,80 | 105,30 |
Nitrogen production technologies
For large enterprises and laboratory environments, three following methodologies are used:
- Cryogenic – nitrogen is separated at boiling point between constituent components difference. Method’s main advantage is high purity gas in liquid state obtaining. Among disadvantages are bulky equipment, its cost, system quick start-up and shutdown impossibility, personnel presence necessity and rather high power consumption.
- Adsorption – method is based on size difference between nitrogen and oxygen molecules. Provides stable nitrogen purity up to 99.999%. Adsorption-type nitrogen equipment is practically universal for various applications. It is characterised by low sensitivity to compressed air temperature and wear resistance. Adsorbent has a service life of 15 years and is more affordable than membranes. Among technology comparative disadvantages are calculated nitrogen purity change complexity, construction complexity due to numerous valves, low adaptability for inclusion into mobile nitrogen unit, as it is more suitable for containerised design.
- Membrane – method provides the compressed air is separated into components. Method’s advantages include: vapour moisture in the compressed air does not affect membranes functioning; purity and capacity easy control, simple design with minimum moving parts. Purity rate rarely exceeds 99.5 %; to produce higher percentage, equipment often becomes uneconomical as it requires more compressed air. Membranes are too sensitive to high temperatures and must be replaced frequently – every 5 years.
The ONH Systems Company offers to purchase:
Adsorption nitrogen units
- A compressor pressurises air to a pressure of 10 bar or higher.
- A refrigeration or adsorption dryer dries the air mixture and it is further filtered before being fed into one of the adsorbers.
- An adsorber traps oxygen and other components, and nitrogen of required purity is delivered to customer.
Membrane nitrogen units
- Compressed air from compressor is fed to an air treatment system where it is cleaned of moisture, oil and mechanical impurities.
- An air mixture is transferred to an electric heater to provide it with optimum temperature.
- The heated air mixture passes to gas separation modules where nitrogen is separated.
Design options
Nitrogen units can be manufactured in several different types:
- Stationary – to be installed on a common frame and placed in a heated premises.
- Block-modular – equipment installation in an all-metal container for use at different temperatures, including severe northern conditions with slides.
- Mobile – unit equipment on a chassis or trailer in special containers with autonomous power plants.
Nitrogen generating units advantages
We manufacture modern high-tech nitrogen units and plants developed in-house. We carry out complex turnkey projects. We advise on technical specification development. When purchasing ONH Systems equipment, you get the following advantages:
- Cost reduction. Energy and maintenance costs for nitrogen generating unit are minimised.
- Increased safety. No more need to transport heavy pressurised cylinders.
- Uninterrupted nitrogen supply. You are not dependent on external supplies and receive required gas volumes on site.
- Environmentally friendly. Environmental impact is reduced by avoiding nitrogen transportation by road.
How to purchase?
To get the price and to purchase a nitrogen generating unit, please contact us by phone given on this website. Warranty for equipment supplied up to 24 months.