Patent US3257313A successfully refreshed from Google Patents.
US3257313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil distillation and hydrodesulfurizing process
Assignee: Phillips Petroleum Co
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Filing: 1962-08-28
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Granted: 1966-06-21
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Expires: 1982-08-28
Abstract
No abstract record available.
Inventors
- 👤 Charles C Martini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:20
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A METHOD FOR THE PROGRESSIVE DISTILLATION AND REFINING OF A HEAVY OIL TO OBTAIN LIGHTER REFINED PRODUCTS THEREFROM AN OIL FOR FURTHER TREATMENT TO PRODUCE A FINAL PETROLEUM PRODUCT WHICH COMPRISES THE STEPS OF: (A) DESALTING THE LUBE CRUDE FRACTION, (B) HEATING SAID LUBE CRUDE FRACTION TO A TEMPERATUR AT WHICH A LIGHTER THAN A TOPPER CRUDE FRACTION NOT DESIRED IN THE LUBE FRACTION WILL DISTILL THEREFROM, (C) SUBJECTING THE THUS HEATED LUBE CRUDE FRACTION TO DISTILLATION, IN THE PRESENCE OF A STRIPPING GAS, (D) IN SAID LAST DISTILLATION REMOVING FROM SAID LUBE CRUDE FRACTION A DISTILLATION REMOVING FROM SAID LUBE PONENTS NOT DESIRED IN THE LUBE CRUE IN ITS FURTHER PROCESSING TO OBTAIN LUBE OIL PRODUCT, (E) RECOVERING A TOPPED LUBE CRUDE FOR FURTHER PROCESSING, (F) PASSING SAID DISTGILLATE INTO A LIGHT FRACTIONS SEPARATION ZONE, (G) ALSO PASSING INTO SAID LIGHT FRACTIONS SEPARATION ZONE A NONLUBE FRACTION CONTAINING CRUDE OIL STOCE SUITABLE FOR CRACKING, (H) EFFECTING DIRECT HEAT EXCHANGE IN SAID LIGHT FRACTIONS SEPARATION ZONE BETWEENSAID DISTILLATE AND SAID CRUDE OIL STOCK, (I) REMOVING FRIM SAID LIGHT FRACTIONS SEPARATION ZONE A DISTILLATE COMPRISING LIGHT FRACTIONS, (J) WITHDRAWING FROM SAID LIGHT FRACTIONS SEPARATION ZONE A COMBINED DISTILLATION STOCK, (K) DESALTING SAID COMBINED DISTILLATION STOCK, (L) HEATING SAID COMBINED DISTILLATION STOCK, (M) PASSING THE HEATED COMBINED DISTILLATION STOCK TO A HIGH PRESSURE FRACTIONATION ZONE,
Claim 2
Independent Claim
223 words
A METHOD FOR THE PROGRESSIVE DISTILLATION AND REFINING OF A HEAVY OIL TO OBTAIN LIGHTER REFINED PRODUCTS THEREFROM AN OIL FOR FURTHER TREATMENT TO PRODUCE A FINAL PETROLEUM PRODUCT WHICH COMPRISES THE STEPS OF: (A) DESALTING THE LUBE CRUDE FRACTION, (B) HEATING SAID LUBE CRUDE FRACTION TO A TEMPERATUR AT WHICH A LIGHTER THAN A TOPPER CRUDE FRACTION NOT DESIRED IN THE LUBE FRACTION WILL DISTILL THEREFROM, (C) SUBJECTING THE THUS HEATED LUBE CRUDE FRACTION TO DISTILLATION, IN THE PRESENCE OF A STRIPPING GAS, (D) IN SAID LAST DISTILLATION REMOVING FROM SAID LUBE CRUDE FRACTION A DISTILLATION REMOVING FROM SAID LUBE PONENTS NOT DESIRED IN THE LUBE CRUE IN ITS FURTHER PROCESSING TO OBTAIN LUBE OIL PRODUCT, (E) RECOVERING A TOPPED LUBE CRUDE FOR FURTHER PROCESSING, (F) PASSING SAID DISTGILLATE INTO A LIGHT FRACTIONS SEPARATION ZONE, (G) ALSO PASSING INTO SAID LIGHT FRACTIONS SEPARATION ZONE A NONLUBE FRACTION CONTAINING CRUDE OIL STOCE SUITABLE FOR CRACKING, (H) EFFECTING DIRECT HEAT EXCHANGE IN SAID LIGHT FRACTIONS SEPARATION ZONE BETWEENSAID DISTILLATE AND SAID CRUDE OIL STOCK, (I) REMOVING FRIM SAID LIGHT FRACTIONS SEPARATION ZONE A DISTILLATE COMPRISING LIGHT FRACTIONS, (J) WITHDRAWING FROM SAID LIGHT FRACTIONS SEPARATION ZONE A COMBINED DISTILLATION STOCK, (K) DESALTING SAID COMBINED DISTILLATION STOCK, (L) HEATING SAID COMBINED DISTILLATION STOCK, (M) PASSING THE HEATED COMBINED DISTILLATION STOCK TO A HIGH PRESSURE FRACTIONATION ZONE,
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |