ADSORPTION CYCLE FOR OZONE PRODUCTION

摘要

A gas mixture is separated by an adsorption cycle using at least three adsorber vessels in which the sweep stage recovering adsorbed product from one adsorber vessel overlaps with that of another of the adsorber vessels and/or effluent from one adsorber vessel in a feed rinse stage is routed to another adsorber vessel that is in an air sweep stage. Also provided is a PSA ozone separation cycle in which the product ozone concentration is maintained within a range of 10 mg/l.