Pressure Swing Adsorption (PSA) Oxygen Production Principle
Pressure swing adsorption oxygen production relies on zeolite molecular sieve as the adsorbent. By leveraging the principles of pressure adsorption and pressure desorption, it selectively adsorbs nitrogen from the air and releases it, thereby separating oxygen. Zeolite molecular sieve is a spherical granular adsorbent processed through a specialized pore - formation treatment. Its surface and internal structure are densely packed with micropores, which enable the kinetic separation of oxygen and nitrogen.
The separation mechanism is based on the subtle difference in the kinetic diameters of oxygen and nitrogen molecules. Nitrogen molecules diffuse more rapidly through the micropores of zeolite, while oxygen molecules have a slower diffusion rate. Water and carbon dioxide in compressed air exhibit a diffusion behavior similar to that of nitrogen. As a result, oxygen molecules become concentrated in the adsorption tower.
Advantages and Features of Oxygen Generators
Oxygen generators produce gaseous oxygen directly from compressed air on - site, presenting a cost - efficient, reliable, and safe alternative to traditional oxygen supply methods, such as oxygen cylinders or cryogenic liquid storage.
The Oxywise Oxygen Generator series offers 40 standard models, with capacities ranging from 1 to 200 Nm³ per hour and oxygen purity levels between 90 - 99%. These generators are engineered for continuous 24/7 operation. Each unit is equipped with an automatic start - stop function, allowing it to initiate and halt operation in accordance with oxygen consumption requirements.
Oxygen Generating and Filling Stations
When an oxygen generator is integrated with an oxygen high - pressure compressor for cylinder filling, it forms an Oxygen Generating and Filling Station. This system encompasses essential components like an air compressor, dryer, and filtration units. Standard features include molecular sieve protection, stainless - steel piping, and other advanced attributes, ensuring efficient and safe operation for oxygen production and filling processes.
The technical features of the oxygen generator after PSA are as follows
(1) Imported PLC control system and imported pneumatic angle seat valve with switching life up to 3 million times are adopted to ensure the continuous and reliable operation of the device.
(2) Imported PLC intelligent controller, easy to operate, stable operation, high degree of automation. Can choose touch screen control system, computer industrial control system.
(3) Reasonable internal components, uniform airflow distribution, reduce the impact of high-speed airflow.
(4) Special molecular sieve protection measures extend the service life of zeolite molecular sieve.
(5) The automatic interlock oxygen emptying device ensures the oxygen quality of the product.
(6) The operation of the whole machine can be: depending on the organic combination of advanced oxygen production process design, scientific gas distribution structure, adsorption tower with compound bed structure, unique molecular sieve filling process, unique molecular sieve protection measures and automatic compression compensation device of cylinder, it is conducive to the long-term use of oxygen molecular sieve.
| |
Model |
purity |
Size |
Weight |
Inlet |
Oulet |
|
| 1 |
LPO-3 |
90-95% |
1200*900*1900 |
520 |
DN15 |
G1/2" |
| 2 |
LPO-5 |
90-95% |
1350*1050*2100 |
750 |
DN20 |
G1/2" |
| 3 |
LPO-10 |
90-95% |
1550*1300*2100 |
1100 |
DN25 |
G1/2" |
| 4 |
LPO-15 |
90-95% |
1700*1450*2350 |
1500 |
DN32 |
G1/2" |
| 5 |
LPO-20 |
90-95% |
1800*1550*2350 |
1750 |
DN32 |
G1/2" |
| 6 |
LPO-25 |
90-95% |
1900*1650*2400 |
2000 |
DN40 |
G1" |
| 7 |
LPO-30 |
90-95% |
2000*1750*2400 |
2250 |
DN40 |
G1/2" |
| 8 |
LPO-35 |
90-95% |
1970*1250*2800 |
1800 |
DN40 |
DN25 |
| 9 |
LPO-40 |
90-95% |
2000*1300*2460 |
2380 |
DN40 |
DN25 |
| 10 |
LPO-50 |
90-95% |
2000*1300*2800 |
2790 |
DN50 |
DN25 |
| 11 |
LPO-60 |
90-95% |
2000*1300*2800 |
2930 |
DN50 |
DN25 |
| 12 |
LPO-70 |
90-95% |
2200*1500*2900 |
3190 |
DN50 |
DN40 |
| 13 |
LPO-80 |
90-95% |
2200*1500*2900 |
3585 |
DN50 |
DN40 |
| 14 |
LPO-90 |
90-95% |
2250*1550*2980 |
3940 |
DN50 |
DN40 |
| 15 |
LPO-100 |
90-95% |
2370*1500*3050 |
4249 |
DN65 |
DN40 |
| 16 |
LPO-110 |
90-95% |
2370*1500*3240 |
4508 |
DN65 |
DN40 |
| 17 |
LPO-120 |
90-95% |
2370*1500*3440 |
4708 |
DN65 |
DN40 |
| 18 |
LPO-130 |
90-95% |
2370*1500*3600 |
4910 |
DN65 |
DN50 |
| 19 |
LPO-160 |
90-95% |
2440*1850*3700 |
5810 |
DN80 |
DN65 |
1. What are the differences between a VPSA oxygen generator and a PSA oxygen generator?
The PSA (Pressure Swing Adsorption) oxygen generator is ideal for applications requiring an oxygen output of up to 300 cubic meters. It is characterized by its simplicity, convenience, and mobility, making it suitable for various small - to medium - scale operations.
In contrast, the VPSA (Vacuum Pressure Swing Adsorption) oxygen generator is designed for larger - scale applications, with an optimal capacity of over 300 cubic meters. One of its key advantages is that as the gas output increases, the energy consumption per unit of oxygen produced decreases, making it a more energy - efficient choice for high - volume oxygen production.
2. What distinguishes a fish pond aerator from a fish pond oxygen generator?
A fish pond aerator typically incorporates an integrated air pump. It works by introducing air into the water, thereby mixing approximately 20% of the oxygen present in the air with the water. This method is suitable for maintaining basic oxygen levels in ponds under normal circumstances.
On the other hand, a fish pond oxygen generator produces oxygen with a purity of around 90% and dissolves it directly into the water. This significantly boosts the oxygen content, providing a more concentrated and efficient oxygen supply. Merchants should consider factors such as the type of fry, the desired oxygen production rate, the production cycle, and the overall size of the fish pond when deciding between an aerator and an oxygen generator.
3. What is the purity level of the PSA oxygen generator?
The standard PSA oxygen generators usually achieve a purity level ranging from 90% to 93%. However, our company's PSA oxygen generators offer enhanced performance. They can reach purity levels of 95% and 98%, and in some advanced models, even exceed 99%.
4. What precautions should be taken when using an oxygen generator for ozone production?
When using an oxygen generator to support ozone production, it is essential to choose an oxygen generator that ensures stable gas flow and consistent purity. Inconsistent performance of the oxygen generator can lead to fluctuations in ozone concentration and production, negatively impacting the effectiveness of the ozone - generation process.
5. How should the PSA oxygen generator be maintained?
The daily maintenance of the PSA oxygen generator is relatively uncomplicated and consists of the following steps:
- Air Compressor Maintenance: Regularly service the air compressor. Pay close attention to air filtration and oil - related aspects. Replace the oil according to the manufacturer's specified intervals and guidelines to ensure optimal compressor performance and longevity.
- Dryer Maintenance: Periodically check the refrigerant pressure of the dryer to ensure it operates within the normal range. Clean the heat sink with compressed air daily to prevent the accumulation of dust and debris. Replace the filter element regularly; the typical replacement interval is 8000 operating hours, although this may vary depending on the specific operating conditions and pressure differences.
- Air Storage Tank Maintenance: Open the drain valve of the air storage tank once a day to remove any accumulated condensate, ensuring the quality of the compressed air.
- Automatic Drainer Maintenance: Inspect the automatic drainer daily to prevent clogging, which could hinder its drainage function. If the drainer becomes blocked, slightly open the manual valve, close the self - discharge valve, and then remove the automatic drainer for disassembly and cleaning. When cleaning the automatic drainer, use soap to effectively remove any contaminants.
- Oxygen Generator System Monitoring: Regularly check the working pressure of the adsorption tower. Continuously record the oxygen purity and flow rate to monitor the overall performance of the oxygen generator and promptly detect any potential issues.
LDH GAS offers a range of services to help you maximize your benefits. For maximum convenience, we offer a fixed price service agreement based on operation time or calendar time. Of course, all customers are welcome to call us at any time. We are always more than willing to assist you.
1) Consultancy
Help for self-help, exchange of experience and individual support.
If you have questions on plant operation or need somebody for troubleshooting, we give you advice either on the phone or in writing. The direct contact with you is very important for us as it is the basis for a permanent cooperation as partners to the benefit of both sides.
2) Commissioning
Systematic from final acceptance of erection to approval of proper operation and guaranteed features. This includes extensive operational tests, professional filling with adsorbents and catalysts, proper start-up, optimal setting of operating parameters and check of all safety functions. At the same time we train your operating personnel on functions and operation of the plant.
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