99.999% Nitrogen Purity Carbon Molecular Sieve
Chemxin Carbon Molecular Sieve(CMS), a material containing tiny pores of a precise and uniform size, is used as an adsorbent for gases. It is widely used in PSA nitrogen generator to produce 98%~99.999% purity nitrogen(N2) .
Technical Parameter:
| Model | Carbon Molecular Sieve | |||
| Appearance | Black, extruded(pellet) | |||
| Nominal pore diameter | 4 angstroms | |||
| Bulk Density | 640-660g/ml | |||
| Dust level | 100PPM Max | |||
| Diameter (mm) | 1.0-1.2 | 1.3-1.5 | 1.5-1.8 | 1.8-2.0 |
| Crushing Strength (N/pc) | 50-60 | 60-70 | 70-80 | 80-100 |
| Production Output | Data as follows | 3-8% loss | 5-15% loss | 10-20% loss |
| Type | Adsorbent pressure | Nitrogen purity | Nitrogen quantity | Nitrogen recovery |
| (MPa) | (N2%) | (NM3/h.t) | N2/Air(%) | |
| CMS-220 | 0.8 | 99.99 | 100 | 4.8 |
| 99.9 | 145 | 3.7 | ||
| 99.5 | 200 | 3.1 | ||
| 99 | 260 | 2.4 | ||
| CMS-240 | 0.8 | 99.99 | 110 | 4.6 |
| 99.9 | 160 | 3.5 | ||
| 99.5 | 240 | 3.0 | ||
| 99 | 280 | 2.3 | ||
| 98 | 320 | 2.2 | ||
| CMS-260 |
0.8 |
99.99 | 120 | 4.6 |
| 99.9 | 175 | 3.4 | ||
| 99.5 | 260 | 2.9 | ||
| 99 | 320 | 2.2 | ||
| 98 | 350 | 2.1 | ||
| CMS-280 | 0.8 | 99.999 | 90 | 6.4 |
| 99.99 | 135 | 4.5 | ||
| 99.9 | 190 | 3.4 | ||
| 99.5 | 280 | 2.8 | ||
| 99 | 335 | 2.2 | ||
How a PSA Nitrogen Generator System Works:
Atmospheric air contains 78 % of nitrogen & 21% of oxygen. Nitrogen in PSA (Pressure Swing Adsorption) method is generated by physical separation of oxygen from atmospheric air and outlet the Nitrogen, using CHEMXIN adsorbent Carbon Molecular Sieve(CMS) which preferentially adsorb oxygen molecules, CO and CO2 whereas nitrogen molecules is not adsorbed by CMS due to its larger molecular size.
The compressed air is passed through PSA Tower which is interconnected with automatic changeover valves. In this Process, We can provide separate /Desiccant air Dryer. This has tendency of adsorbing moisture from compressed air. After that dried compressed air will now come in contact with bed of carbon molecular sieves (CMS).
At a time one tower remains under nitrogen production cycle, whereas the other tower undergoes regeneration which is achieved through depressurization of the tower to atmospheric pressure. The two towers of PSA modules are inter-connected with automatic changeover valves through pneumatic signal given by solenoid valve which in turn get the electrical signal from the timer provided in the control panel. The changeover time cycle will be 1 + 1 minute. The outgoing nitrogen gas is sent to a surge vessel where the minimum nitrogen pressure will be maintained with the help of Back pressure Regulator. The product nitrogen will now be sent to the consumer point through a pressure reducing valves at required pressure.
Production & Packaging
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