Air separation

Details Air separation Air separation

1993-06-23

1994-07-26

Capossella, Ronald C.

Refrigeration

Processes

Circulating external gas

62 38, 62 39, F25J 302

Patent

active

053318188

ABSTRACT:
Air is rectified in a rectification system comprising a higher pressure rectification column, an intermediate pressure rectification column, and a lower pressure rectification column. A first reboiler-condenser provides liquid nitrogen reflux for the higher pressure rectification column and for the lower pressure rectification column and also reboils the intermediate pressure rectification column. Another reboiler-condenser provides liquid nitrogen reflux for the intermediate pressure rectification column and reboils the lower pressure rectification column. Air is fed to the higher pressure rectification column through a pair of inlets. A first oxygen product is withdrawn from the intermediate pressure rectification column by a pump. Gaseous nitrogen products are withdrawn from the intermediate and lower pressure rectification columns through a pair of outlets thereof.

REFERENCES:
patent: 4936099 (1990-06-01), Woodward et al.
patent: 5069699 (1991-12-01), Agrawal
patent: 5231837 (1993-08-01), Ha
patent: 5257504 (1993-11-01), Agrawal et al.

Affiliated with

Also associated with

Rating

Air separation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air separation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air separation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1046956