Process and apparatus to produce ultra high purity oxygen from a liquid feed
Patent
·
OSTI ID:6524820
This patent describes a process to produce ultra high purity oxygen from a liquid feed comprising: (a) introducing feed liquid containing oxygen, light impurities and heavy impurities into a stripping column; (b) passing feed liquid down the stripping column and stripping light impurities from downflowing liquid into upflowing vapor; (c) vaporizing resulting liquid, passing a first vapor portion thereof into an absorbing column, and passing a second portion thereof up the stripping column as the upflowing vapor; (d) passing first vapor portion up the absorbing column and absorbing heavy impurities from ascending vapor into descending liquid to produce ultra high purity oxygen vapor; (e) condensing ultra high purity oxygen vapor and passing resulting ultra high purity oxygen liquid down the absorbing column as descending liquid, and (f) recovering product ultra high purity oxygen.
- Assignee:
- Union Carbide Corp., Danbury, CT
- Patent Number(s):
- US 4780118
- OSTI ID:
- 6524820
- Country of Publication:
- United States
- Language:
- English
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