Lights removal from carbon dioxide
US11353261B2 · kind B2 · utility
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24References
9Claims
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Key dates
| Filing date | Oct 31, 2019 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Light gases such as helium are extracted from a carbon dioxide-containing feed stream by distillation. Costly dehydration steps are avoided by pumping the liquid bottoms stream leaving the distillation column without vaporization so as to ensure that any water present in the feed remains in solution with the bulk stream leaving the process. This prevents any liquid phase water causing corrosion or solid ice or hydrates forming to plug the flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.