Process and plant for air separation by cryogenic distillation

Details Process and plant for air separation by cryogenic distillation Process and plant for air separation by cryogenic distillation

1998-04-01

1999-05-11

Kilner, Christopher B.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62910, F25J3/04

Patent

active

059015772

ABSTRACT:
A process and plant for air separation by cryogenic distillation. Air is cooled in a main exchanger and is sent to a distillation column in which it separates into an oxygen-enriched liquid and a nitrogen-enriched vapor. A stream of pressurized liquid coming from the apparatus vaporizes in the main exchanger. The refrigeration necessary for the process is generated by expansion of air in one or more turbines immediately downstream of the main exchanger. The turbine or turbines produces or produce, as output, a stream which is at least 95 percent liquid, preferably 100 percent liquid.

REFERENCES:
patent: 5564290 (1996-10-01), Bonaquist et al.
patent: 5600970 (1997-02-01), Drnevich et al.

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