Process and device for low-temperature separation of air

Details Process and device for low-temperature separation of air Process and device for low-temperature separation of air

1995-12-04

1997-07-08

Kilner, Christopher

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62654, 62924, F25J 304

Patent

active

056449348

ABSTRACT:
The process and the device are used for low-temperature separation of air. A first split stream of compressed and purified air is cooled, fed to a main rectifying system and separated there into liquid oxygen and gaseous nitrogen. A liquid product fraction (for example, oxygen and/or nitrogen) is vaporized in indirect heat exchange with a second split stream of compressed and purified air. The second split stream condenses during indirect heat exchange at least partially. At least a portion of the second split stream, downstream from indirect heat exchange with the liquid product fraction, is used as cooling medium for top cooling of a crude argon column downstream from the main rectifying system. The second split stream makes available all or essentially all the cold needed for liquefaction of crude argon. Preferably, at least a portion of the second split stream, vaporized in the indirect heat exchange in the top condenser of the crude argon column, is fed without further pressure increase to the main rectifying system.

REFERENCES:
patent: 4555256 (1985-11-01), Skolaude et al.
patent: 5019145 (1991-05-01), Tohde et al.
patent: 5049173 (1991-09-01), Cormier, Sr. et al.
patent: 5108476 (1992-04-01), Dray et al.
patent: 5159816 (1992-11-01), Kovak et al.
patent: 5245831 (1993-09-01), Agrawal et al.
patent: 5349824 (1994-09-01), Ha et al.
patent: 5426946 (1995-06-01), Corduan et al.
patent: 5440884 (1995-08-01), Bonaquist et al.
patent: 5469710 (1995-11-01), Howard et al.
patent: 5522224 (1996-06-01), Canney
patent: 5546766 (1996-08-01), Higginbotham

Affiliated with

Also associated with

Rating

Process and device for low-temperature separation of air does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for low-temperature separation of air, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for low-temperature separation of air will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2403787