Process for the production of nitrogen by cryogenic distillation

Details Process for the production of nitrogen by cryogenic distillation Process for the production of nitrogen by cryogenic distillation

1993-10-08

1994-12-20

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 38, 62 40, F25J 302

Patent

active

053736990

ABSTRACT:
An air separation process wherein a nitrogen enriched fraction is withdrawn from the distillation column, a portion of which is compressed and recycled through the lowest positioned reboiler in the column and directed to an upper portion of the column as reflux.

REFERENCES:
patent: 4303428 (1981-12-01), Vandenbussche
patent: 4662916 (1987-05-01), Agrawal et al.
patent: 4662917 (1987-05-01), Cormier et al.
patent: 4853015 (1989-08-01), Yoshino
patent: 4947649 (1990-08-01), Agrawal et al.

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