Patent ID: 7947118

Claim:
A containerized gas separation system comprising (a) a container having an interior, an exterior, and a container volume defined by the outer dimensions of the container and (b) a single pressure swing adsorption system installed in the interior of the container and adapted to selectively adsorb nitrogen from air to provide a product gas comprising at least 80 vol % oxygen at a product gas flow rate, wherein the ratio of the container volume to the product gas flow rate is less than about 2000 ft 3 /(ton per day) and wherein the pressure swing adsorption system comprises (1) two or more vessels, each vessel having a feed end, a product end, and adsorbent material adapted to selectively adsorb nitrogen from air; (2) piping adapted to introduce the feed gas mixture into the feed ends of the vessels, piping adapted to withdraw the 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; and (3) 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.