Nitrogen Generation Plant 500 Nm3/h KDN-500 Backflow Pure Nitrogen Generator Protective Gas GAN LIN
Specifications:
Standard Product of Nitrogen Generator KDN 350~ 450 Series
|
MODEL CONTENTS |
KDN-350 |
KDN-385 |
KDN-400 |
KDN-420/50Y |
|
|
GN flow |
Nm3/h |
350 |
385 |
400 |
420 |
|
LIN flow |
|
/ |
30Nm3/h |
20L/h |
50L/h |
|
purity |
ppm(O2)/%(N2) |
≤5ppm(O2) |
≤5ppm(O2) |
≤5ppm(O2) |
≤100ppm(O2) |
|
GN pressure |
MPa |
0.4 |
0.9 |
1 |
0.7 |
|
LIN pressure |
MPa |
/ |
0.9 |
0.7 |
0.7 |
Typical Product:500 Nm3/h KDN-500 Back Flow Nitrogen Generation
Output, purity and pressure
|
|
Flow (Nm3/h) |
Purity |
Pressure MPa(G) |
|
GN |
500 (g) |
≤1ppm(O2) |
0.8 |
Note: 1. Nm3/h is defined as the volume at 0, 101.3kPa(A) (same as below);
2. The liquid output is calculated from data of gas, and the pressure is calculated with 0 meter high at outlet of cold box.
3. All pressures which are not specially defined below are the gauge pressures.
Description:
This plant employs a expansion turbine process in which the air is purified by molecular sieve, nitrogen is produced by means of single column with expansion accomplished through backflow.After the feed air is cleaned of dust and mechanical impurities in air filter, it is compressed in air compressor.The compressed air is then fed into air pre-cooling system after it is cooled, it becomes saturated.The saturated and compressed air flows into switched molecular sieve adsorbers where such hydrocarbons as H2O, CO2 and C2H2 are adsorbed from the air.A small part of purified process air is drawn out to be used as instrument air; the remainder is fed into main heat exchanger, and then the cooled air is fed into the bottom of nitrogen column for participation in rectification. The high purity nitrogen gas and liquid nitrogen are then obtained at the top of nitrogen column while the saturated and oxygen-rich liquid air at the bottom of column is throttled into the evaporation side of condenser evaporator to condense the nitrogen gas at the top of column.Oxygen-rich liquid air at the evaporation side of condenser evaporator is heated and vapored to be saturated gas by nitrogen gas at the top of column, and then it is drawn out and into cold end of main heat exchanger, after rewarming, it is drawn out and into turbo-expander to be expanded and refrigerated.Expanded oxygen-rich liquid air enters main heat exchanger to be rewarmed to normal temperature and to be fed out of cold box; partial gas is to be regeneration gas for molecular sieve adsorber, the rest is blowed off.The nitrogen gas is drawn out of the top of nitrogen column. The nitrogen gas flows out of cold box to the client after it is reheated in main heat exchanger to a normal temperature. In order to prevent hydrocarbon from accumulating in condenser evaporator, a small stream of liquid drawn from oxygen-rich liquid air evaporation side is discharged as waste liquid.
Applications:
1. Enrichment Gas
2. Aerospace Industries
3. Lifting Gas
4. Blanketing Gas
5. Tempering Gas
6. Hardening Gas
Competitive Advantage:
1. Leading technical level, perfect technical development group
2. Long service life
3. High market share
4. Complete quality management system
5. Mature project engineering supervision
6. Designed for long, stable and reliable running
