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

摘要

A method and apparatus for argon recovery in which an impure argon stream isseparated from air within a cryogenicair separation unit having a divided wall argon rejection/rectificationcolumn. The resulting argon stream is subsequently recoveredand purified within an integrated pressure swing adsorption system to produceproduct grade argon.