US2834721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the controlled withdrawal of granular solids from a liquid-granular solids contacting zone
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-08-26
•
Granted: 1958-05-13
•
Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Grady L Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:40
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/02; C; C10; C10G; C10G25/00; C10G25/12; B01D15/08; B01D15/10; B01D15/18; B01D15/1892; C10G2300/00; C10G2300/20; C10G2300/201; C10G2300/202; C10G2300/40; C10G2300/4056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A METHOD FOR THE CONTINUOUS WITHDRAWAL OF GRANULAR SOLIDS AT CONTROLLED RATES FROM A LIQUID HYDROCARBONGRANULAR SOLIDS CONTACTING ZONE, WHICH COMPRISES: PASSING A STREAM OF GRANULAR SOLIDS-LIQUID HYDROCARBON SLURRY IN TURBULENT FLOW CONDITION FROM THE CONTACTING ZONE DOWNWARDLY THROUGH A CONFINED PASSAGE; DISCHARGING THE SLURRY FROM SAID PASSAGE ONTO A SUBSTANTIALLY HORIZONTAL PERFORATED SURFACE WHICH IS PERVIOUS TO THE LIQUID HYDROCARBONS BUT IMPERVIOUS TO GRANULAR SOLIDS SO THAT LIQUID HYDROCARBONS WILL PASS THROUGH THE SURFACE WHILE GRANULAR SOLIDS ARE RETAINED THEREON; ROTATING SAID SURFACE ABOUT A VERTICAL AXIS OF ROTATION REMOVED A SUBSTANTIAL DISTANCE FROM THE POINT OF SUPPLY OF THE SLURRY TO THE SURFACE; CONTROLLING THE LINEAR VELOCITY OF THE STREAM IN THE DRAIN PASSAGE, THE DISTANCE BETWEEN THE LOWER END OF THE PASSAGE AND THE SURFACE, THE RATE OF ROTATION OF THE SURFACE AND THE PERVIOUSNESS OF THE SURFACE TO LIQUID FLOW SO AS TO CAUSE AN ACCUMULATION OF WET GRANULAR SOLIDS TO BUILD UP ON THE SURFACE AND THROTTLE THE FLOW OF GRANULAR SOLIDS FROM THE PASSAGE, WHICH ACCUMULATION HAS AN OIL CONTENT LESS THAN THAT DETERMINED BY THE FOLLOWING EQUATION:
Claim 2
Independent Claim
184 words
A METHOD FOR THE CONTINUOUS WITHDRAWAL OF GRANULAR SOLIDS AT CONTROLLED RATES FROM A LIQUID HYDROCARBONGRANULAR SOLIDS CONTACTING ZONE, WHICH COMPRISES: PASSING A STREAM OF GRANULAR SOLIDS-LIQUID HYDROCARBON SLURRY IN TURBULENT FLOW CONDITION FROM THE CONTACTING ZONE DOWNWARDLY THROUGH A CONFINED PASSAGE; DISCHARGING THE SLURRY FROM SAID PASSAGE ONTO A SUBSTANTIALLY HORIZONTAL PERFORATED SURFACE WHICH IS PERVIOUS TO THE LIQUID HYDROCARBONS BUT IMPERVIOUS TO GRANULAR SOLIDS SO THAT LIQUID HYDROCARBONS WILL PASS THROUGH THE SURFACE WHILE GRANULAR SOLIDS ARE RETAINED THEREON; ROTATING SAID SURFACE ABOUT A VERTICAL AXIS OF ROTATION REMOVED A SUBSTANTIAL DISTANCE FROM THE POINT OF SUPPLY OF THE SLURRY TO THE SURFACE; CONTROLLING THE LINEAR VELOCITY OF THE STREAM IN THE DRAIN PASSAGE, THE DISTANCE BETWEEN THE LOWER END OF THE PASSAGE AND THE SURFACE, THE RATE OF ROTATION OF THE SURFACE AND THE PERVIOUSNESS OF THE SURFACE TO LIQUID FLOW SO AS TO CAUSE AN ACCUMULATION OF WET GRANULAR SOLIDS TO BUILD UP ON THE SURFACE AND THROTTLE THE FLOW OF GRANULAR SOLIDS FROM THE PASSAGE, WHICH ACCUMULATION HAS AN OIL CONTENT LESS THAN THAT DETERMINED BY THE FOLLOWING EQUATION:
References Cited (Backward Citations)
US417546A
Cited
US888257A
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US1061660A
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US2034784A
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US2240347A
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US2553387A
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US2673176A
Cited
US2631727A
Cited
US2701786A
Cited
US2674564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |