Cryogenic side column rectification system for producing low...

Details Cryogenic side column rectification system for producing low... Cryogenic side column rectification system for producing low...

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/04 (2006.01)

Patent

CA 2201991

A cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from a higher pressure column is turboexpanded and condensed against lower pressure column intermediate liquid prior to being passed into the lower pressure column and low purity oxygen is produced in an auxiliary side column driven by fluid from the higher pressure column.

Système de rectification cryogénique pour la production d'oxygène de faible pureté et d'azote de haute pureté, de préférence à une pression élevée, dans lequel la vapeur riche en azote d'une colonne haute pression est turbodétendue puis condensée au contact du liquide d'une colonne de plus basse pression avant d'être introduite dans la colonne de plus basse pression; l'oxygène de faible pureté est produit dans une colonne auxiliaire entraînée par le fluide venant de la colonne haute pression.

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