US3316318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of aromatics from cracked gasoline fractions
Assignee: Shell USA Inc
•
Filing: 1962-03-09
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Granted: 1967-04-25
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Voetter Heinz
- 👤 Ridderikhoff Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:44
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/04; C10G67/0409; C10G67/0427; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE RECOVERY OF AN AROMATIC HYDROCARBON HAVING FROM 6 TGHROUGH 8 CARBON ATOMS PER MOLECULE FROM A CRACKED GASOLINE CONTAINING SAID AROMATIC HYDROCARBON, ALKENES AND ALKADIENES WHICH COMPRISES PASSING SAID GASOLINE TOGETHER WITH HYDROGEN OVER A SELECTIVE HYDROGENATION CATALYST UNDER SELECTIVE HYDROGENATION CONDITIONS TGO HYDROGENATE AT LEAST 95% OF THE ALKADIENES WHILE CONVERTING LESS THAN 25% OF THE ALKENES TO ALKANES, FRACTIONATING THE HYDROGENATED GASOLINE TO OBTAIN A LIGHT FRACTION HAVING A FINAL BOILING POINT NOT MORE THAN 160*C., SAID FRACTIONATION BEING CARRIED OUT UNDER REDUCED PRESSURE AND WITH A BOTTOM TEMPERATURE BELOW 100*C., AND EXTRACTING SAID AROMATIC HYDROCARBON FROM THE LIGHT FRACTION BY MEANS OF A SOLVENT SELECTIVE FOR AROMATICS.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE RECOVERY OF AN AROMATIC HYDROCARBON HAVING FROM 6 TGHROUGH 8 CARBON ATOMS PER MOLECULE FROM A CRACKED GASOLINE CONTAINING SAID AROMATIC HYDROCARBON, ALKENES AND ALKADIENES WHICH COMPRISES PASSING SAID GASOLINE TOGETHER WITH HYDROGEN OVER A SELECTIVE HYDROGENATION CATALYST UNDER SELECTIVE HYDROGENATION CONDITIONS TGO HYDROGENATE AT LEAST 95% OF THE ALKADIENES WHILE CONVERTING LESS THAN 25% OF THE ALKENES TO ALKANES, FRACTIONATING THE HYDROGENATED GASOLINE TO OBTAIN A LIGHT FRACTION HAVING A FINAL BOILING POINT NOT MORE THAN 160*C., SAID FRACTIONATION BEING CARRIED OUT UNDER REDUCED PRESSURE AND WITH A BOTTOM TEMPERATURE BELOW 100*C., AND EXTRACTING SAID AROMATIC HYDROCARBON FROM THE LIGHT FRACTION BY MEANS OF A SOLVENT SELECTIVE FOR AROMATICS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |