A method of separating air in which a superheated air stream is introduced into a mass transfer contacting zone associated with a higher pressure column of an air separation unit. Krypton and xenon is washed from a superheated air stream introduced into the mass transfer contacting zone, thereby to form a krypton and xenon-rich liquid. The krypton and xenon- rich liquid is stripped within a stripping column to produce a krypton-xenon-rich bottoms liquid. A krypton-xenon- rich stream composed of the krypton-xenon-rich bottoms liquid from the stripping column is produced for purposes of further refinement.
申请公布号
WO2010019308(A2)
申请公布日期
2010.02.18
申请号
WO2009US46553
申请日期
2009.06.08
申请人
PRAXAIR TECHNOLOGY, INC.;PROSSER, NEIL, MARK;SAUNDERS, JOHN, BERNARD