Liquid products using an air and a nitrogen recycle liquefier

Refrigeration – Processes – Circulating external gas

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62 28, 62 38, F25J 304

Patent

active

047055480

ABSTRACT:
Liquid nitrogen, oxygen and/or argon are produced from a cryogenic distillative separation efficiently and economically using a combination of air recycle and nitrogen recycle to produce a liquid product.

REFERENCES:
patent: 3605422 (1971-09-01), Pryor et al.
patent: 4152130 (1979-05-01), Theobald
patent: 4372764 (1983-02-01), Theobald
patent: 4375367 (1983-03-01), Prentice
patent: 4400188 (1983-08-01), Patel et al.
patent: 4464188 (1984-08-01), Agrawal et al.

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