METHOD FOR PURIFYING ARGON THROUGH CRYOGENIC ADSORPTION

PATENT - 211PUS04421 ABSTRACT This invention relates to an improved process for preparing high purity argon employing a cryogenic adsorptive technique. In the process air is separated into its components and a crude argon feed containing 0.8 mol% oxygen or less and 0.5 mol% nitrogen or less is gener...

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Bibliographische Detailangaben
Hauptverfasser:	KOVAK, KENNETH W, PETERSON, JANICE C, AGRAWAL, RAKESH
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS COMPOUNDS THEREOF HEAT PUMP SYSTEMS HEATING INORGANIC CHEMISTRY LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY MIXTURES BY PRESSURE AND COLD TREATMENT NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRIGERATION OR COOLING SEPARATION TRANSPORTING WEAPONS
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Zusammenfassung:	PATENT - 211PUS04421 ABSTRACT This invention relates to an improved process for preparing high purity argon employing a cryogenic adsorptive technique. In the process air is separated into its components and a crude argon feed containing 0.8 mol% oxygen or less and 0.5 mol% nitrogen or less is generated. The crude argon feed is initially subjected to cryogenic adsorption for effecting nitrogen removal and then further subjected to cryogenic adsorption for effecting removal of oxygen. By conducting cryogenic adsorption in this manner, essentially no supplemental refrigeration is required in the cryogenic adsorption steps.