Cryogenic argon producing unit for air separation apparatus, has unit for connecting head of argon mixture columns with denitrogenation column, and other unit for connecting tank of denitrogenation column with mixture columns

摘要

#CMT# #/CMT# The unit has an argon mixture column formed by primary and secondary argon mixture columns (K10-1, K10-2), and a denitrogenation column (K11), where a head of the primary argon mixture column is connected to a base of the secondary argon mixture column. A connection unit connects a head of the argon mixture columns with the denitrogenation column. Another connection unit connects a base of the denitrogenation column with the argon mixture columns. #CMT# : #/CMT# An independent claim is also included for a method for producing cryogenic argon by cryogenic distillation in an air separation apparatus. #CMT#USE : #/CMT# Unit for producing cryogenic argon in an air separation column of an air separation apparatus (claimed) by cryogenic distillation. #CMT#ADVANTAGE : #/CMT# The unit produces the pure cryogenic argon in the air separation apparatus by cryogenic distillation in simple and effective manner by eliminating nitrogen in the denitrogenation column. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic diagram of an air separation method. K1 : Low pressure column K2 : High pressure column V3 : Opening valve K10-1 : Primary argon mixture column K10-2 : Secondary argon mixture column K11 : Denitrogenation column 23 : Liquid argon.