US3340183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for decolorizing oils
Assignee: Chevron USA Inc
•
Filing: 1965-08-05
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Granted: 1967-09-05
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Expires: 1985-08-05
Abstract
No abstract record available.
Inventors
- 👤 Clark J Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR DECOLORIZING A DARK COLORED HEAVY OIL CONTAINING NITROGEN AND SULFUR COMOUNDS WHICH COMPRISES CONTINUOUSLY PASSING SAID OIL AND HYDROGEN AT ELEVATED PRESSURE ABOVE 1000 P.S.I.G. THROUGH A REACTION ZONE TO CONTACT THEREIN A SULFACTIVE HYDROGENATION CATALYST HAVING DENITRIFICATION AND HYDROCRACKING ACTIVITIES AT TEMPERATURES MAINTAINED IN THE RANE 650-850*F. THROUGHOUT MOST OF THE CONTACTING UNTIL ORGANIC NITROGEN AND SULFUR COMPOUNDS IN THE OIL FEED ARE SUBSTANTIALLY CONVERTED TO NH3 AND H2S, MAINTAINING A LOWER TEMPERATURE IN A DOWNSTREAM PORTION OF THE REACTION ZONE AND CONTINUING THE CONTACTING OF OIL WITH THE CATALYST THEREIN FOR A RELATIVELY SHORT TIME WHILE THE OIL IS BEING COOLED TO A TEMPERATURE OF BELOW ABOUT 450*F., AND WITHDRAWING DECOLORIZED LIQUID OIL EFFLUENT FROM SAID REACTION ZONE AT SAID LOW TEMPERATURE.
Claim 2
Dependent Claim
127 words
A PROCESS FOR DECOLORIZING A DARK COLORED HEAVY OIL CONTAINING NITROGEN AND SULFUR COMOUNDS WHICH COMPRISES CONTINUOUSLY PASSING SAID OIL AND HYDROGEN AT ELEVATED PRESSURE ABOVE 1000 P.S.I.G. THROUGH A REACTION ZONE TO CONTACT THEREIN A SULFACTIVE HYDROGENATION CATALYST HAVING DENITRIFICATION AND HYDROCRACKING ACTIVITIES AT TEMPERATURES MAINTAINED IN THE RANE 650-850*F. THROUGHOUT MOST OF THE CONTACTING UNTIL ORGANIC NITROGEN AND SULFUR COMPOUNDS IN THE OIL FEED ARE SUBSTANTIALLY CONVERTED TO NH3 AND H2S, MAINTAINING A LOWER TEMPERATURE IN A DOWNSTREAM PORTION OF THE REACTION ZONE AND CONTINUING THE CONTACTING OF OIL WITH THE CATALYST THEREIN FOR A RELATIVELY SHORT TIME WHILE THE OIL IS BEING COOLED TO A TEMPERATURE OF BELOW ABOUT 450*F., AND WITHDRAWING DECOLORIZED LIQUID OIL EFFLUENT FROM SAID REACTION ZONE AT SAID LOW TEMPERATURE.
References Cited (Backward Citations)
US3006843A
Cited
US3003953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |