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Oxygen Generator Technology - OXYSWING®
Overview | Products | Technology | Applications
The OXYSWING: PSA Oxygen Generators apply an optimized Pressure Swing Adsorption process for the separation of the oxygen in ambient air from the other gases. An OXYSWING® PSA Oxygen Generator contains either two single adsorption vessels (Twin-Tower systems) or a series of modules of two adsorption vessels (Modular systems), where each vessel is filled with an appropriate zeolite molecular sieve.
The oxygen production process starts by pressurizing one of the adsorption vessels with clean compressed air. Before the equilibrium load is reached at the top of the adsorption bed, the feed air supply will be interrupted to prevent a break-through.
The adsorption vessels are alternatively loaded in order to guarantee a continuous oxygen flow. If one adsorption vessel is loaded, simultaneously the other one is regenerated by a pressure decrease (desorption). The depressurization required for regeneration is obtained by simply venting to the atmosphere.
Prior to the subsequent adsorption and desorption phase, a pressure equalization will take place between the adsorption vessels in order to preload the regenerated vessel by a gas rich in oxygen.
The OXYSWING® PSA Oxygen Generators are able to produce oxygen at very stable purities between 90 – 95%.
IGS’ engineers have dedicated special attention to the adsorber vessel design in order to avoid fluidization (moving) of the zeoilte molecular sieve bed during the entire adsorption and desorption process and under any possible working condition of the OXYSWING® PSA Oxygen Generator.
Extensive CFD simulations and running tests have been performed in order to remain distant from the physical fluidization limit for each adsorber vessel size and under all process circumstances.
Thanks to extensive in-house CFD and FEM simulations of process flows and mechanical designs IGS’ engineers also managed to develop the extremely compact gas distribution system FlatFlow® for the OXYSWING® Modular PSA Oxygen Generators.
The FlatFlow® technology makes it possible to turn a horizontal feed gas flow into a vertical and uniformly distributed gas flow over the entire molecular sieve bed section within an extremely limited space. Despite these limited dimensions, the FlatFlow® technology even results into a superior bed utilization compared to conventional gas distribution systems.
This break-through made it finally possible to develop a compact, highly efficient and truly flexible PSA generator. The FlatFlow® technology from IGS is protected by several international patent applications.