Process features:
Pressure swing adsorption process (PSA) is a new gas separation technology, its principle is to use molecular sieve to different gas molecules "adsorption" performance differences and the gas mixture is stripped, so as to extract higher purity, better quality oxygen. The purity of oxygen can meet 93%±2.
Process principle:
There are two adsorption towers filled with molecular sieve in the PSA molecular sieve oxygen production unit. Clean and dry compressed air enters the pressure swing adsorption oxygen production unit and flows through the adsorption towers A and B filled with molecular sieve. The compressed air flows through the adsorption tower from bottom to top, and the adsorption force of oxygen and nitrogen under different pressures is different with molecular sieve. Nitrogen, water, carbon dioxide and other components are adsorbed on the surface of the molecular sieve, and the unadsorbed oxygen is collected as product gas at the outlet, which flows out from the upper end of the adsorption tower and enters the buffer tank. After a period of time, the oxygen adsorbed by molecular sieve in the adsorption tower reaches saturation and needs to be regenerated.
Regeneration is achieved by stopping the adsorption step and reducing the pressure of the adsorption tower. After a short period of pressure equalization, the adsorption tower begins to reduce pressure, and the adsorbed nitrogen, water, carbon dioxide and other components are removed to complete the regeneration process. The two adsorption towers are alternately adsorbed and regenerated to produce high-quality oxygen with stable flow and purity.
Process flow chart:
Technical index parameters:
Flow rate: 3~200nm3/hr
Purity: ≥93%±3
Pressure: 0.01-0.4Mpa(adjustable within)
Dew point: -45℃
Filtration accuracy: 0.001ppm
Model number | Flow rate（m3/hr） | Purity(%) | stress(Mpa) | High pressure(Mpa) | Power source | Technology | Dew-point（℃） | Low dew point（℃） | Finished product |
XTFY-10 | 10 | ≥93±3 | ≤0.4-0.5 | 1-20 | Natural air | PSA Pressure swing adsorption type | -45 | -70 | Breath |
XTFY-15 | 15 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-20 | 20 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-30 | 30 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-40 | 40 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-50 | 50 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-60 | 60 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-70 | 70 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-80 | 80 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-100 | 100 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath | ||
XTFY-200 | 200 | ≥93±3 | ≤0.4-0.5 | 1-20 | -45 | -70 | Breath |
Oxygen production equipment application field:
Large factories, aquaculture oxygen, oxygen, dissolved oxygen, supporting the use of large ozone machine, disinfection, sterilization, algae and so on.
Can also be used for:
(1) Electric furnace steelmaking: decarbonization, oxygen combustion heating, foam slag dissolution, metallurgical control and post-heating.
(2) Wastewater treatment: oxygen-enriched aeration of activated sludge, pool oxygenation and ozone sterilization.
(3) Field cutting construction: field steel pipe, steel plate cutting with oxygen rich, mobile or small oxygen generator can meet the requirements.
(4) Sewage treatment, non-ferrous metal smelting: smelting steel, zinc, nickel, lead, etc., need to use oxygen enrichment, PSA method is gradually replacing the cryogenic method.
(5) Glass melting: oxygen combustion aid dissolution, cutting, increase glass production, extend the life of the furnace.
(6) Pulp bleaching and paper making: chlorine bleaching is converted into oxygen-rich bleaching, providing cheap oxygen.
(7) Ore treatment: used in production processes such as gold, which can improve the extraction rate of precious metals.
(8) Fermentation: rich generation instead of air for aerobic fermentation oxygen, can greatly improve efficiency
(9) Drinking water: Provide oxygen to the ozone generator, oxygen sterilization.
(10) petrochemical and chemical oxygen: the oxygen reaction in the petroleum and chemical process uses oxygen rich instead of air for oxidation reaction, which can improve the reaction speed and chemical product output.
About operating energy consumption
1, oxygen generator action and energy saving effect
The oxygen adsorption tower is switched once per minute, and the pressure boost time of each switch is only 1 to 2 seconds, that is to say, the instantaneous gas consumption is very large, if there is no buffering effect of the gas storage tank, the compressed air directly enters the system in the instant can not handle a lot of compressed air, so that a lot of compressed air containing water and oil directly enters the oxygen generator, which must poison the molecular sieve. Shorten the service life of molecular sieve, reduce the gas production rate, and increase the user's operating cost.
2, provide a stable air source
If there is a storage tank in the oxygen generator system, the output air of the main engine has a buffer, the air source can be better maintained at a set value, and the gas system can get a stable pressure, which is necessary for the use of modern factories.
3. Good air quality
The compressed air out of the oxygen generator is mainly sent to the air storage tank, where the air will stay for a certain time, can accumulate foreign bodies such as impurities and water in the air, and the temperature of the compressed air is also reduced, even if there is no freeze dryer, it can also send relatively high-quality air.
4, in fact, the role of savings is a reservoir, the air compressor is an air source, and the gas storage tank is a pool. The gas storage tank can balance the air pressure within a certain pressure scale according to the setting, buffer the uncertainty of the air pressure, reduce the number of launches of the main engine, and other gas storage tanks can also play the function of accumulating foreign bodies such as impurities and water in the air.
About Safe use
1, do not put in the sun, rain, wind or relative humidity greater than 85% of the place. Do not place in dusty, corrosive or flammable gas environment. Do not place in areas where there is a risk of vibration or condensation freezing. Do not get too close to the wall to prevent poor ventilation. It is necessary to use in the environment with corrosive gases, and the dryer with copper tube treated with rust prevention or stainless steel heat exchanger type should be selected. It should be used at ambient temperature below 40 degrees.
2, the inlet of compressed air should not be connected incorrectly. In order to facilitate repair, to ensure repair space, should be set up bypass pipeline. To prevent the vibration of the air compressor to the dryer. Pipe weight should not be added directly to the dryer.
3, the drain pipe do not stand up, do not discount or squish.
4, the power supply voltage promise is not firm less than 10%. Leakage break protectors of appropriate capacity should be provided. Grounding is necessary before use.
5, the compressed air inlet temperature is too high, the ambient temperature is too high (more than 40 degrees), the use of flow beyond the rated amount of air, the voltage is not firm more than 10%, ventilation is too poor (winter also to change air, otherwise the room temperature will rise), and other cases, the protection circuit will play a role, the indicator light off, intermittent operation.
6. When the air pressure is higher than 0.15MPa, the drain of the normally open automatic drainer can be closed. When the displacement of the cold and dry machine is too small, the drain is open and air is blown out.
7, the compressed air quality is poor, such as mixed with dust and oil, these stolen goods will adhere to the heat exchanger, reduce its efficiency, and drainage is also easy to fail. Expect a filter to be set at the inlet of the dryer and acknowledge drainage at least once a day.
8. The vent of the dryer should be vacuumed once a month.
9. Switch on the power supply, and then switch on the compressed air after the operation is stable. After interrupted operation, it is necessary to wait more than 3 minutes before starting again.
10, if the use of automatic drainage, should often check whether the drainage function is normal. Always clean the dust on the condenser. Always check the pressure of the refrigerant to determine whether the refrigerant leaks and whether the capacity of the refrigerator has changed. Check whether the temperature of the condensate removal water is normal.
About maintenance reminder
1. Maintenance time of air compressor: the first guarantee is 500 hours, and the future work is maintained every 3000 hours.
2. Air compressor maintenance content: Replace air compressor oil, replace internal accessories: oil filter, air filter, oil core.
3. Air purification end maintenance: air four-stage filtration needs to replace the filter element, depending on the surrounding environment, the general filter element replacement in about 6000 hours.
4. Freeze dryer: Generally not needed, if necessary, add refrigerant.
5. Adsorption dryer maintenance: Replace the raw material activated alumina or molecular sieve, depending on the frequency of use, the general replacement time is 1 to 2 years.
6. Supercharger equipment maintenance: regularly replace the piston ring, add grease, etc.
7. If you need more information, please contact our staff!
8. Thank you for reading, I wish you a happy life!
