PSA recovery depends on complete adsorption of the contaminant leaving near 100% pure desired product. The off gas waste product (N2 + unrecovered O2) is vented and the near 100% O2 product is recovered for use.

This process competes with cryogenic Air separation tp produce O2 and/or N2 commercially

https://www.generon.com/product_type/psa-nitrogen-generator/

Thank you Mr. Rick Manner for your reply.

Do you have idea how can I have values to give input for aspen adsorber simulation like adsorber bed width, height, purge flow rate, feed rate.

I have pre-decided N2 product feed mass flow only.

Please guide me if you have any idea?

Diameter of adsorber is calculated based on maximum allowable Velocity, the length of adsorber is decided based on Breakthrough and hand calculation on dynamic adsorption capacity of adsorbent.

The length and diameter of adsorber should be determined simultaneously due to their interaction on each other.

Please read the book of unit operation written by mccabe