Liquid oxygen plant 1000 Nm3/h ~ 1500 Nm3/h KDON-1000Y/1000Y/32Y Carrier Gas Cutting Gas Fuel Gas
Specifications:
1000 Nm3/h ~ 1500 Nm3/h KDON Series Air Separation Plant
| MODEL CONTENTS | KDON-1000Y/500Y/28Y | KDON-1600Y/2000Y/95Y | KDON-2000Y/3000/118Y | KDON-1500Y/1000/45Y | KDON-1275Y/670Y/45Y |
| LOX/LIN/ LAr flow | Nm3/h | 1000/500/28 | 1600/2000/95 | 2000/3000/ 118 | 1500/1000/45 | 1275/670/45 |
| LOX/LIN/ LAr purity | ppm | 99.6%O2/ 10ppmO2/ 99.9995% Ar | 99.6%O2/ 2ppmO2/2ppmO2, 3ppmN2 | 99.6%O2/ 5ppmO2/ 99.999%Ar | 99.6%O2/10ppmO2/ 2ppmO2,3ppm2N2 | 99.6%O2/10ppmO2/ 2ppmO2,3ppm2N2 |
| LOX/LIN/ LAr pressure | MPa | 0.12/0.15/015 | 0.16/0.2/0.12 | 0.05/0.01/ 0.05 | 0.16/0.018/0.16 | 0.16/0.3/0.16 |
| Subcooled | ℃ | -184/-189/ -181 | -187/-193/ -183 | -183/21/-186 | -180/37.5/ -193 | -183/-193/ -182 |
Typical Product: KDON-1000Y/1000Y/32Y Liquid oxygen plant
Output, purity and pressure
| Product | Output(Nm3/h) | Pressure MPa(G) | Temperature (℃) | Purity |
| Liquid Oxygen | 1000 | ～0.2 | ～-185 | 99.6%O2 |
| Liquid Nitrogen | 500 | ～0.4 | ～-185 | ≤10ppmO2 |
| Gaseous Nitrogen | 1000 | ～0.02 | ～37 | ≤10ppmO2 |
Description:
The feed air inhaled from the suction inlet flows into the self-cleaning air filter AF where the dust and other mechanical impurities are removed, and then flows into the centrifuge feed air compressor to be compressed to around 0.625MPa(A). The compressed air flows into the air pre-cooling unit to be cooled to around 10℃, and then enters into the switched molecular sieve MS1201(or MS1202) where the CO2, carbohydrate and water vapor are adsorbed. The two molecular sieve purifiers are switched, when one is during working, another is during regeneration, and automatic switches regularly.
The purified air mixed with the refluxed air which is rewarmed in the main heat exchanger after being expanded goes to the centrifugal circulating air compressor to be compressed to around 2.5MPa(A), and then enters the cold box to be cooled to 253K in the main heat exchanger after being boosted by the boosting end of the expander, and then it enters the cryogenic refrigerator to be cooled to 243K, and goes back to the main heat exchanger to be cooled to 162K, and then it is divided into two streams: one steam of circulating air flows into the expander to be expanded, and the part expansion air enters the lower column, and the rest reflux and enters the main heat exchanger to be rewarmed, and then goes out of the cold box to the centrifuge circulating air compressor to be as circulating air; the other steam enters the lower column after being cooled and throttled.
The air is preliminarily separated into gaseous nitrogen and oxygen-enriched liquid air in the lower column, and the top gaseous nitrogen is liquefied in the mian condenser K1, and at the same time, the liquid oxygen at the low pressure side of the main cold box is gasified. Part liquid nitrogen is as the reflux liquid of the lower column, and the other part of liquid nitrogen will be extracted from the top of the lower column and subcooledin the subcooler E3 with purify gaseous nitrogen and wasten gaseous nitrogen, and a part is sent to the storage tank as product, and the rest is fed to the top of the upper column C2 after being throttled. The wasten liquid nitrogen (oxygen content is 1% O2) is fed to the upside of the upper column C2 after being subcooled in E3 and throttled. The liquid air is fed to the middle of the upper column C2 as reflux liquid after being subcooled in the subcooler E3 and throttled.
The product liquid oxygen is extracted from the bottom of the upper column, and fed to the storage tank after being subcooled in the subcooler E3.
The purify gaseous nitrogen is extracted from the top of the upper column, and goes out of the cold box as the product after being rewarmed in the subcooler and medium pressure heat exchanger.
The wasten nitrogen extracted from the top of the upper column goes out of the cold box after being rewarmed in the subcooler and main heat exchanger, and then goes into the electric heater as the regeneration gas of the molecular sieve.
Applications:
- Shielding gas
- Standard Gas
- Process Gas
- Sterilization Gas
- N2 Converter Rental
- Cutting Gas
- Fuel Gas
- Carrier Gas
Competitive Advantage:
1) The molecular sieve purifies the air with boosting expander process, and air circulating refrigeration.
2) The air pre-cooling system employs pre-cooling unit, which is easy to be operated.
3) The molecular sieve is used to purify the air, which greatly improves the reliability and safety of the plant operation.
4) The sieve plate tower is used to reduce the investment and the height of cold box.
5) The system uses the advanced DCS control technology which realizes the integrated control at local cabinet and on site, and can effectively monitor the production duration of air separation plant. The control system has such advantages as of advanced/reliable design and high ratio between performance and price.
