US2754249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent treatment of hydrocarbon mixtures
Assignee: ExxonMobil Oil Corp
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Filing: 1953-06-29
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Granted: 1956-07-10
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harold C Myers
- 👤 Richard N Lovett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:48
CPC Classifications
C; C10; C10G; C10G21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
233 words
IN THE METHOD OF SEPERATING NON-PARAFFINIC HYDROCARBON FROM PARAFFINIC HYDROCARBONS WHEREIN A MIXTURE OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBONS IS CONTACTED WITH A SOLVENT HAVING A GREATER SOLUBILITY FOR NON-PARAFFINIC THAN FOR PARAFFINIC HYDROCARBONS, TO FORM A RAFFINATE PHASE RICHER INPARAFFINIC HYDROCARBONS THAN THE AFORESAID MIXTURE OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBON AND CONTAINING SOLVENT AND TO FORM AN EXACT PHASE COMPRISING A MAJOR PORTION OF THE SOLVENT TOGETHER WITH NON-PARAFFINIC HYDROCARBONS EXTRACTED FROM THE AFORESAID MIXTURE, FRACTIONATING THE AFORESAID REFFINATE PHASE TO OBTAIN A SOLVENT FRACTION AND A RAFFINATE OIL FRACTION AND RETURNING THE AFORESAID SOLVENT FRACTION TO THE EXTRACTOR FRACTIONATING THE EXXTRACT PHASE TO OBTAIN A SOLVENT FRACTION AND AN EXTRACT OIL FRACTION AND RETURNING THE EXTRACT SOLVENT FRACTION TO THE EXTRACTOR WHEREIN IN COMBINATION WITH THE RAFFINATE SOLVENT FRACTION SAID EXTRACT SOLVENT FRACTION IS USED TO EXTRACT FURTHER MIXTURES OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES DIVIDING SAID EXTRACT PHASE INTO TWO PORTIONS ADDING TO ONE PORTION OF SAID EXTRACT PHASE A SOLVENT SOLUBLE ADDITION AGENT CAPABLE OF REDUCING THE SOLUBILITY OF NON-PARAFFFINIC HYDROCARBONS IN SAID SOLVENT, COOLING SAID PORTION OF EXTRACT PHASE TO A TEMPERATURE OF WHICH A MAJOR PORTION OF THE NON-PARAFFINIC HYDROCARBONS CONTAINED THEREIN IS SUBSTANTIALLY INSOLUBLE IN SAID MIXTURE OF SOLVENT AND ADDITION AGENT, SEPARSTING SAID NON-PARAFFINIC HYDROCARBONS FROM SAID MIXTURE OF SOLVENT AND ADDITION AGENT BY GRAVITY TO OBTAIN AN OIL-RICH UPPER LAYER AND AN
Claim 2
Dependent Claim
233 words
IN THE METHOD OF SEPERATING NON-PARAFFINIC HYDROCARBON FROM PARAFFINIC HYDROCARBONS WHEREIN A MIXTURE OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBONS IS CONTACTED WITH A SOLVENT HAVING A GREATER SOLUBILITY FOR NON-PARAFFINIC THAN FOR PARAFFINIC HYDROCARBONS, TO FORM A RAFFINATE PHASE RICHER INPARAFFINIC HYDROCARBONS THAN THE AFORESAID MIXTURE OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBON AND CONTAINING SOLVENT AND TO FORM AN EXACT PHASE COMPRISING A MAJOR PORTION OF THE SOLVENT TOGETHER WITH NON-PARAFFINIC HYDROCARBONS EXTRACTED FROM THE AFORESAID MIXTURE, FRACTIONATING THE AFORESAID REFFINATE PHASE TO OBTAIN A SOLVENT FRACTION AND A RAFFINATE OIL FRACTION AND RETURNING THE AFORESAID SOLVENT FRACTION TO THE EXTRACTOR FRACTIONATING THE EXXTRACT PHASE TO OBTAIN A SOLVENT FRACTION AND AN EXTRACT OIL FRACTION AND RETURNING THE EXTRACT SOLVENT FRACTION TO THE EXTRACTOR WHEREIN IN COMBINATION WITH THE RAFFINATE SOLVENT FRACTION SAID EXTRACT SOLVENT FRACTION IS USED TO EXTRACT FURTHER MIXTURES OF PARAFFINIC AND NON-PARAFFINIC HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES DIVIDING SAID EXTRACT PHASE INTO TWO PORTIONS ADDING TO ONE PORTION OF SAID EXTRACT PHASE A SOLVENT SOLUBLE ADDITION AGENT CAPABLE OF REDUCING THE SOLUBILITY OF NON-PARAFFFINIC HYDROCARBONS IN SAID SOLVENT, COOLING SAID PORTION OF EXTRACT PHASE TO A TEMPERATURE OF WHICH A MAJOR PORTION OF THE NON-PARAFFINIC HYDROCARBONS CONTAINED THEREIN IS SUBSTANTIALLY INSOLUBLE IN SAID MIXTURE OF SOLVENT AND ADDITION AGENT, SEPARSTING SAID NON-PARAFFINIC HYDROCARBONS FROM SAID MIXTURE OF SOLVENT AND ADDITION AGENT BY GRAVITY TO OBTAIN AN OIL-RICH UPPER LAYER AND AN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |