Cryogenic nitrogen generator with bottom reboiler and nitrogen e

Details Cryogenic nitrogen generator with bottom reboiler and nitrogen e Cryogenic nitrogen generator with bottom reboiler and nitrogen e

1990-08-22

1992-06-23

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 39, F25J 300

Patent

active

051239469

ABSTRACT:
A process of producing nitrogen by cryogenic separation of air in a single distillation column process, in which cooled feed air is passed to a reboiler heat exchanger in a distillation column, whereby in the column a portion of a formed nitrogen-rich stream is used for reflux, and the remaining portion is recovered as vapor and liquid product, and a portion of a formed oxygen-rich stream is used for reflux, and a remaining portion is recovered as product, and wherein the nitrogen-rich stream is used to provide process refrigeration.

REFERENCES:
patent: 3500651 (1970-03-01), Becker
patent: 4594085 (1986-06-01), Cheung
patent: 4662916 (1987-05-01), Agrawal et al.
patent: 4707994 (1987-11-01), Shenoy et al.
patent: 4783210 (1988-11-01), Ayres et al.
patent: 4834785 (1989-05-01), Ayres

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