Patent ID: 7854793

Claim:
A pressure swing adsorption system comprising (a) two or more vessels, each vessel having a feed end, a product end, and adsorbent material adapted to adsorb one or more components from a multi-component feed gas mixture; (b) piping adapted to introduce the feed gas mixture into the feed ends of the vessels, piping adapted to withdraw a product gas from the product ends of the vessels, piping adapted to place the product ends of any pair of vessels in flow communication, and piping adapted to withdraw a waste gas from the feed ends of the vessels; (c) a feed pipe adapted to supply the feed gas mixture to the system, a product pipe adapted to withdraw the product gas from the system, and a waste gas pipe adapted to withdraw the waste gas from the system; and (d) an indexed rotatable multi-port valve adapted to place the product end of each vessel in sequential flow communication with the product end of each of the other vessels.