PROCEDE DE DISTILLATION D'AIR AVEC PRODUCTION D'ARGON ET INSTALLATION DE DISTILLATION D'AIR CORRESPONDANTE

摘要

A method and apparatus for air distillation which makes it possible to deliver relatively large flow rates of oxygen-enriched and nitrogen-enriched fluid at a low cost, is provided. The apparatus has at least two double distillation columns and at least two argon columns that operate in parallel. The argon-enriched fluid which is formed are then mixed downstream of the argon columns, and directed through a common compressor, deoxygenation unit, or drying unit, and more than one of which may be common to both streams.