Cryogenic process for the production of methane-free, krypton/xenon product
US5063746A · kind A · utility
3Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1991 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Feb 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/925
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the production of kryton and xenon by using a vapor stream containing greater than 2% oxygen to strip a liquid stream containing oxygen, krypton, methane and xenon of methane. This is accomplished by properly adjusting the liquid to vapor flows in the distillation column. The use of a suitable reflux liquid will decrease the loss of krypton and xenon in the methane laden vapor stream leaving the distillation system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.