High purity nitrogen and oxygen gas production equipment

Details High purity nitrogen and oxygen gas production equipment High purity nitrogen and oxygen gas production equipment

1988-10-14

1989-08-01

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

With sorbing or mixing

62 24, 62 42, F25J 102

Patent

active

048530158

ABSTRACT:
There is provided an apparatus for manufacturing nitrogen gas and oxygen gas of very high purity by cryogenic liquefaction, and without using an expansion turbine. Supercooled and compressed air is sent to a distilling tower where it is mixed with and cooled by the latent heat of vaporization of liquid nitrogen from any external source. Utilizing the difference between their boiling points, nitrogen is taken out as gas while oxygen remains as liquid. The oxygen is concentrated in an oxygen condenser and then further concentrated in an oxygen distilling tower mixed with liquid oxygen from an external source as the refrigerant.

REFERENCES:
patent: 3312074 (1967-04-01), Keith et al.
patent: 3327489 (1967-06-01), Gaumer, Jr.
patent: 3363427 (1968-01-01), Blanchard et al.
patent: 3905201 (1975-09-01), Coveney et al.
patent: 3967464 (1976-07-01), Cormier et al.
patent: 4137056 (1979-01-01), Golovko
patent: 4152130 (1979-05-01), Theobald
patent: 4526595 (1985-07-01), McNeil

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