KNA-60F Nitrogen Generator Technical Plan

1. Design requirements

1.1 Compressed Air required

Air compressor selection recommendations: enlarge 15-20% margin according to the intake air.

1.2 Product Data

Flow unit “Nm3/h” is under 20℃，0.101MPa standard flow

1.3 Project Requirements

1.4 Installation Condition

2. Process of the System

Process 1. Air Compression (Standalone Unit)

Compressed air is produced from the 45kw Screw Air Compressor with outlet pressure 0.8MPa, flow
volume 8.2m3/min.

Process 2. Air Purificaion (Skid-mounted System)

Purified Compressed Air is produced in the following process:
1) Removing from most of liquid oil, water, dust via KAS-108 efficient gas-liquid separator (with cyclone separation),
2) Drying the compressed purified air via KAD-108F refrigeration air dryer, enabling the compressed air dew point atmospheric pressure dropped to about-20℃, to take off the most water,
3) Removing oil via 3 sets of KAL-108 ultra filters to make sure the oil content ≤0.001ppm, dust content≤ 0.01 M.
4) Removing most of the water via KBM-108 heat regeneration air dryer and KAF-108 dust filter so that the compressed air pressure dew point down to -60 ℃.

Process 3. Nitrogen Generation and Buffering (Skid-mounted System)

Clean compressed air first enter to buffer tank V-2, and then going into two PSA separation towers which filled with adsorbents (Carbon Molecular Sieve, composite structure) i.e. KNA-60F. Compressed air enter through the bottom of the adsorption tower, the air flow evenly spread after the special stainless steel multi-layer to adsorption tower to separate Nitrogen and oxygen, finally Nitrogen flow out, this processed by pressure equalizing and pressure reducing (to atmospheric pressure). The adsorbent release the adsorbed impurities component (primarily oxygen) to complete the regeneration of the adsorbent. The operating cycles between 2 adsorption towers, the air is continuously fed in, the Nitrogen continuously generated.
Nitrogen generated from the Nitrogen generator first enter to Nitrogen buffer tank V-1.0, and then filtered by KAF-026 dust filter to get the purity of 99.999% Nitrogen, the yield is 60Nm3/h, the output pressure is 0.6MPa(adjustable), atmospheric dew point ≤-60℃, oil content ≤0.001ppm, dust content ≤0.1μm.
KNA-60F nitrogen generatoris equipped with a Nitrogen analyzer (scope of 79-99.999%) , rotor flow meter, auto emptying devices, and pressure relief devices. Digital display, online analysis to ensure 99.999% Nitrogen purity.

3. Our Technical advantages

3.1 High-Quality Carbon Molecular Applied

High quality Carbon molecular sieve to make sure maximum energy saving, our company use the latest imported products which has the advantages of strong hardness, less powder, high Nitrogen recycling, long lifespan (up to 8 years).

3.2 Our New-Generation Structure Design for absorbing tower

Our new PSA Nitrogen generator adopt the new composite structure design for the absorbing tower, the top is cylinder and coconut auto compress device, the upper part is carbon molecular sieve, the lower molecular sieve is activate processed, compressed air through a special diffuser, firstly flow through to the activated molecular sieves to take off the most moisture to ensure the dew point under -45℃ for the air pass through the sieve.

3.3 State-of-Art Stainless Steel Valve

We corporate with the world famous Danish ESG stainless steel pneumatic angle seat valve, with switching time of 0.05 seconds. Its the normal use lifespan is more than 3 million times and it has advantages of simple structure, reliable sealing, close quickly, easy maintenance, reliable operation for protection of nitrogen generator.

3.4 Special Gas Diffusion Structure Improves Efficiency and Lifespan

The adsorption tower has a special internal air diffuser apparatus, first compressed air enter through the neck of the cyclone unit to contact with the special diffusion alumina balls (using a spherical shape and its hardness), the air flow as an “S” shape. The gas then flows through the double stainless steel mesh sieve and activated processed sieve to finally contact with the carbon molecular sieve, which not only greatly reduce the impact to molecular sieve, but also make gas more evenly in the adsorption process, help to improve nitrogen life efficiency and carbon molecular sieves.