Process and apparatus for the production of ultra purity nitrogen and oxygen of ultra purity by cryogenic rectification of feed air.A system for the production of ultra purity nitrogen and oxygen of ultra high purity and recovery by means of cryogenic grinding of the supply air by employing a colA main, auxiliary and a column of a column extraction.In which the column extraction is operated by fluid from the vessel to the main column and the process fluid generated in the auxiliary additional column is used in the main column.
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