VPSA Oxygen Generation System Technical Description
The principle of Vacuum Pressure Swing Adsorption (VPSA) oxygen production is based on the preferential adsorption of nitrogen (N₂) by the adsorbent.Under ambient temperature conditions,by changing the adsorption pressure,nitrogen in the air is adsorbed and desorbed,thereby achieving the separation of nitrogen and oxygen (O₂). Oxygen is enriched at the outlet of the adsorption tower.
When the adsorption process reaches saturation, a vacuum pump is used to evacuate the adsorption tower to a negative pressure state.This causes the adsorbed nitrogen to desorb, and completing the regeneration of the adsorbent in preparation for the next adsorption cycle, thus finishing the entire cycle.By alternating the above cycles in the adsorption towers, continuous oxygen production can be achieved.
The typical oxygen purity is 90%–95%, with a dew point of ≤ -50°C. The operating pressure is approximately 50 kPa, and the desorption vacuum pressure is ≥ -50 kPa.Due to the low operating pressure, it is more energy-efficient under the same oxygen output capacity, and is suitable for scenarios with an oxygen production capacity requirement of ≤ 10,000 m³/h.
