The PSA nitrogen generation system works on the pressure swing principle. Tanks filled with carbon granules realize the separation of oxygen and thus the reduction of the oxygen content in the air. The granules consist of specially treated activated carbon, which enables the separation of oxygen and nitrogen.
In contrast to the Oxeo EcoPrevent VG variant, the PG variant uses a separate compressed air source that operates at a pressure level of 6 to 9 bar(g) as well as suitable compressed air treatment. The compressed ambient air is fed into an adsorption tank. This contains carbon granules that retain the smaller oxygen molecules in their pores. The nitrogen can thus flow past and is thus separated from the oxygen. A cycle lasts about 60 seconds and includes the separation of nitrogen in one tank (adsorption) and the removal of the bound oxygen in a second tank (desorption). Since this process is repeated continuously in alternation, nitrogen is permanently available for supplying the protected area.
The air factor (efficiency of the N2 generator in relation to the required compressed air ) and the low power consumption of the air compressors have been optimized to the maximum, so that our new PSA systems guarantee maximum economy at comparatively low investment costs.
Furthermore, the complete compressed air treatment, consisting of a refrigeration dryer, several filter stages and an activated carbon adsorber, has been reworked to make it even more process-safe and flow-optimized.
In many cases, the economic efficiency of a PSA system can be increased by using a heat recovery system to generate hot water in the heating circuit.
Oxeo EcoPrevent PG systems offer a user-friendly interface including an online diagnostics platform with a wide range of control and monitoring options for economical and reliable control and monitoring of the system. All information from the sensors installed as standard, such as pressure dew point, oxygen and flow sensors, is displayed in the interface and reflects the efficient operation of the N2 generator.