Carbon dioxide hydrocarbons separation process utilizing liquid-liquid extraction
US4547209A · kind A · utility
50Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | Jul 30, 1984 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Jul 30, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/929
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carbon dioxide is cryogenically separated from methane and then is separated from the ethane by liquid extraction with water at high pressures of 500 to 2250 psia thus avoiding the CO.sub.2 --C.sub.2 H.sub.6 azeotrope problem. The process is particularly applicable to the recovery of high pressure pure carbon dioxide from the wellhead products of carbon dioxide flooding used in enhanced oil recovery. The high pressure pure carbon dioxide liquid is pumped for reinjection to the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.