Refrigeration – Processes – Circulating external gas
Patent
1994-03-11
1995-03-14
Kilner, Christopher
Refrigeration
Processes
Circulating external gas
62 36, 62 39, 261 94, F25J 304
Patent
active
053967720
ABSTRACT:
A method of cryogenically separating a mixture of atmospheric gases within a distillation column system having at least one distillation column. In accordance with the method, liquid and gaseous phases of the mixture of atmospheric gases to be separated are countercurrently passed through structured packing. The column is operated with a pressure greater than 2 bars and with a vapor rate of the vapor phase that is less than a critical vapor rate at which the column floods and which varies with the liquid rate of the liquid phase. Minimum and critical vapor rates at which the column floods are set in accordance with experimentally derived data for maximum column utilization in terms of packing volume or column throughput. Additionally, separation performance in terms of HETP increases with the increase in pressure so that a lower than prior art height of structured packing can be used to obtain a particular separation.
REFERENCES:
patent: 4838913 (1989-06-01), Victor et al.
patent: 4994098 (1991-02-01), Agrawal et al.
patent: 5019144 (1991-05-01), Victor et al.
patent: 5019145 (1991-05-01), Rohde et al.
patent: 5049174 (1991-09-01), Thorogood et al.
patent: 5076823 (1991-12-01), Hansel et al.
patent: 5100448 (1992-03-01), Lockett et al.
patent: 5197296 (1993-03-01), Prosser et al.
patent: 5237823 (1993-08-01), Cheung et al.
patent: 5289688 (1994-03-01), Agrawal
patent: 5311744 (1994-05-01), Sweeney et al.
Krishnamurthy Ramachandran
McKeigue Kevin
Cassett Larry R.
Kilner Christopher
Rosenblum David M.
The BOC Group Inc.
LandOfFree
Atmospheric gas separation method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Atmospheric gas separation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atmospheric gas separation method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-707057