I am trying to build PSA to reduce the amount of N2 in the gas stream but I am not sure which absorbent I should choose.
Pressure Swing Adsorption (PSA) uses, in most cases, two vessels, packed with carbon molecular sieve (CMS). The CMS adsorbs Oxygen as compressed air flows upward through one of the vessels while the other vessel is depressurized and a small amount of the nitrogen output is flowing downward (counter flow) to drive off or desorbs the oxygen and moisture collected by the vessel when it was online removing oxygen from the air. The vessels alternate this adsorption and desorption process. There are several steps in the process; equalization, pressurization/depressurization, adsorption/purge, then back to equalization.A PSA system used to separate and enrich nitrogen from oxygen employs MSC (molecular sieving carbon) for adsorbent. The principle of nitrogen separation by the use of MSC is as follows: As shown in attached figure. The A PSA system used to separate and enrich nitrogen from oxygen employs MSC (molecular sieving carbon) for adsorbent.
You mean the absorbent, or maybe the adsorbent. There are many different types, from activated carbons, through zeolites, to molecular sieves.
I tested few different types of molecular sieves (3A, 4A, 5A, 13X) but I cannot remove much nitrogen from the gas stream. Any recommendation for a good nitrogen adsorbent?
- Badges
- Science topic