METHOD FOR EXTRACTING ARGON BY LOW-TEMPERATURE AIR SEPARATION

摘要

The invention relates to a method for extracting argon by low-temperature air separation. To this end, the rectifying system (2, 4) comprises at least one air separation column (4) subdivided into a first and second partial section (6, 7) by a partition (5) extending in a longitudinal direction of the column. A fluid (3) containing oxygen and argon is introduced into the first partial section (6), and a flow (13) containing oxygen and argon and having an argon concentration ranging from 15 % to 50 % is withdrawn from the second partial section (7).