Active Member
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[China]
Address: No.592 Zhongshan North Road, Hangzhou, China
Contact name:Lou Yizhen
Hangzhou Hangyang Cryogenic Liquefaction Equipment Co., Ltd |
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Nitrogen Generation Plant 570 Nm3/h KDN-570 Reverse Filling Nitrogen Generator
Specifications:
Standard Products for KDN Type Nitrogen Generation
MODEL CONTENTS | KDN-390 | KDN-770 | KDN-850 | KDN-1000 | |
GN flow | Nm3/h | 390 | 770 | 850 | 1000 |
LIN flow |
| / | / | / | / |
purity | ppm(O2)/%(N2) | 1ppm(O2) | 0.3ppm(O2) | 1ppm(O2) | 1ppm(O2) |
GN pressure | MPa | 0.75 | 0.75 | 0.3 | 0.2 |
LIN INJECT | Nm3/h | 27.7 | 38 | 41 | 45 |
Typical Product:570 Nm3/h KDN-570 Reverse Filling Nitrogen Generation
Output, purity and pressure
| Flow (Nm3/h) | Purity | Pressure MPa(G) |
GN | 570 (g) | 0.3ppm(O2) | 0.75 |
Note: 1. Nm3/h is defined as the volume at standard atmospheric pressure;
2. All pressures which are not specially defined are the gauge pressures.
3. The liquid output is calculated from data of gas, and the pressure is calculated with 0 meter high at outlet of cold box
Description:
This plant employs a process in which the air is purified by molecular sieve, and reversed filling of liquid nitrogen. The air is cleaned of dust and mechanical impurities in air filter , and then goes into air compressor to be compressed to rated pressure. The compressed air goes into air pre-cooling unit to reduce the temperature, and remove the condensed moisture as well. The compressed air enters one of molecular sieve adsorbers, where such impurities as moisture, CO2, C2H2 and other hydrocarbons are adsorbed. The air coming from the adsorber goes into main heater exchanger , where the temperature is reduced gradually. The air out of will reach saturation temperature, and enters into the bottom of nitrogen column to follow rectification. The air goes up in the nitrogen column to be condensed continuously, by which the nitrogen content will rise, and the product nitrogen gas will be obtained at the top. The nitrogen gas will be withdrawn from the top to main heater exchanger to be rewarmed, and then sent to the user.The rest nitrogen at the top enters condenser evaporator to be condensed to liquid nitrogen. The liquid nitrogen flows back to nitrogen column to be as reflux liquid with reserved filling liquid nitrogen from outside to follow rectification, and then the oxygen content increases as it is evaporated gradually, and it becomes oxygen enriched liquid air at the bottom. The oxygen enriched liquid air from the bottom of nitrogen column flows into condenser evaporator. The oxygen enriched liquid air is evaporated to be oxygen enriched gaseous air in the condenser evaporator, and then it goes into main heater exchanger to be rewarmed after being withdrawn from the top, and then it goes out of cold box, part of which enters into electric heater, and then enters another molecular sieve adsorber to be as generation gas of molecular sieve adsorber; the rest will be discharged.
Applications:
1. Filling Gas
2. Sealing Gas
3. Inert Gas
4. Agriculture
5. Aerospace science and technology
6. Metal production
Competitive Advantage:
1. This nitrogen plant is designed for long, stable and reliable running, economization of energy, convenient operation and maintenance.
2. PLC is used to control the automatic switchover of molecular sieve purification system such that the reliability and safety in running of the plant are greatly improved and the loss in switchover of air is reduced.
3. Powerful manufacturing capacity
4. Long life span
5. Impeccable quality management system
