Process for the preparation of high-purity liquid nitrogen

Details Process for the preparation of high-purity liquid nitrogen Process for the preparation of high-purity liquid nitrogen

1995-01-25

1996-12-31

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

G01B 2100

Patent

active

055891519

ABSTRACT:
In a process for the preparation of high-purity liquid nitrogen substantially free from at least one of the impurities hydrogen, carbon monoxide and oxygen, liquid nitrogen to be purified is placed in contact with an adsorbent and high-purity liquid nitrogen is recovered. A device for making use of this process includes a source of liquid nitrogen to be purified connected by a conduit to the entry of a reactor containing an adsorbent, the reactor exit being provided with a connecting conduit.

REFERENCES:
patent: 2882244 (1959-04-01), Milton
patent: 3140933 (1964-07-01), McKee
patent: 4425143 (1984-01-01), Nishizawa et al.
patent: 4746332 (1988-05-01), Tomomura et al.
patent: 4869883 (1989-09-01), Thorogood et al.
patent: 5333463 (1994-08-01), Garnier et al.
Patent Abstracts of Japan, vol. 017, No. 410 (Jul. 1993), Derwent Publication AN 90-078652 (Apr. 1990).

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