METHOD AND APPARATUS FOR INCREASING ARGON RECOVERY IN A CRYOGENIC AIR SEPARATION UNIT INTEGRATED WITH A PRESSURE SWING ADSORPTION SYSTEM

A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recov...

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Bibliographische Detailangaben
Hauptverfasser:	DU, Hai, PROSSER, Neil, M, STEPHENSON, Neil, A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MIXTURES BY PRESSURE AND COLD TREATMENT REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recovered from the argon rejection column and purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon. The waste stream from the adsorbent based argon refining and purification subsystem is recycled back to the argon rejection column so as to improve the argon recovery.