Patent US2811472A successfully refreshed from Google Patents.
Patent US2643219A successfully refreshed from Google Patents.
US2643219A
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US
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Fluidized distillation of oil-shale
Assignee: Standard Oil Development Co
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Filing: 1949-06-21
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Granted: 1953-06-23
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Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jr James W Carr
- 👤 Jr Lindsay I Griffin
- 👤 Edward W S Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:30
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/02; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN THE DISTILLATION OF CARBONACEOUS SOLIDS OF THE TYPE OF OIL SHALE WHICH DISINTEGRATE DURING DISTILLATION WHEREIN THE SUBDIVIDED SOLIDS ARE DISTILLED IN THE FORM OF A DENSE TURBULENT MASS FLUIDIZED BY AN UPWARDLY FLOWING GASIFORM MEDIUM IN A DISTILLATION ZONE, SPENT SOLIDS ARE SUBJECTED TO COMBUSTION AND HIGHLY HEATED IN THE FLUIDIZED STATE IN A COMBUSTION ZONE AND HEAT IS SUPPLIED TO SAID DISTILLATION ZONE IN THE FORM OF SENSIBLE HEAT OF SOLIDS CIRCULATING FROM SAID COMBUSTION ZONE TO SAID DISTILLATION ZONE, THE IMPROVEMENT WHICH COMPRISES PASSING A GAS UPWARDLY IN A LOWER PORTION OF SAID COMBUSTION ZONE AT A SUPERFICIAL LINEAR VELOCITY OF SUBSTANTIALLY LESS THAN 1.5 FT. PER SECOND WHEREBY SEGREGATION OF COARSE PARTICLES HAVING A DIAMETER OF ABOUT 400 TO 7,000 MICRONS FROM PARTICLES LESS THAN 400 MICRONS IN DIAMETER TAKES PLACE IN SAID LOWER PORTION, INCREASING SAID VELOCITY THEREAFTER IN AN UPPER PORTION OF SAID COMBUSTION ZONE SUBSTANTIALLY ABOVE 1.5 FT. PER SECOND WHEREBY SOLIDS FINES OF 0-20 MICRONS PARTICLE SIZE ARE FULLY ENTRAINED AND REMOVED OVERHEAD FROM SAID COMBUSTION ZONE
Claim 2
Dependent Claim
176 words
IN THE DISTILLATION OF CARBONACEOUS SOLIDS OF THE TYPE OF OIL SHALE WHICH DISINTEGRATE DURING DISTILLATION WHEREIN THE SUBDIVIDED SOLIDS ARE DISTILLED IN THE FORM OF A DENSE TURBULENT MASS FLUIDIZED BY AN UPWARDLY FLOWING GASIFORM MEDIUM IN A DISTILLATION ZONE, SPENT SOLIDS ARE SUBJECTED TO COMBUSTION AND HIGHLY HEATED IN THE FLUIDIZED STATE IN A COMBUSTION ZONE AND HEAT IS SUPPLIED TO SAID DISTILLATION ZONE IN THE FORM OF SENSIBLE HEAT OF SOLIDS CIRCULATING FROM SAID COMBUSTION ZONE TO SAID DISTILLATION ZONE, THE IMPROVEMENT WHICH COMPRISES PASSING A GAS UPWARDLY IN A LOWER PORTION OF SAID COMBUSTION ZONE AT A SUPERFICIAL LINEAR VELOCITY OF SUBSTANTIALLY LESS THAN 1.5 FT. PER SECOND WHEREBY SEGREGATION OF COARSE PARTICLES HAVING A DIAMETER OF ABOUT 400 TO 7,000 MICRONS FROM PARTICLES LESS THAN 400 MICRONS IN DIAMETER TAKES PLACE IN SAID LOWER PORTION, INCREASING SAID VELOCITY THEREAFTER IN AN UPPER PORTION OF SAID COMBUSTION ZONE SUBSTANTIALLY ABOVE 1.5 FT. PER SECOND WHEREBY SOLIDS FINES OF 0-20 MICRONS PARTICLE SIZE ARE FULLY ENTRAINED AND REMOVED OVERHEAD FROM SAID COMBUSTION ZONE
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |