Cryogenic rectification system for producing ultra-high purity n

Details Cryogenic rectification system for producing ultra-high purity n Cryogenic rectification system for producing ultra-high purity n

1998-02-17

1999-07-06

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62653, F25B 300

Patent

active

059184825

ABSTRACT:
A system for the production of ultra-high purity nitrogen and ultra-high purity oxygen at high recovery by the cryogenic rectification of feed air employing a main column, an auxiliary column and a stripping column, wherein the stripping column is driven by main column kettle fluid and additional process fluid generated in the auxiliary column is utilized in the main column.

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patent: 5582032 (1996-12-01), Shelton et al.
patent: 5590543 (1997-01-01), Agrawal et al.

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