Patent US2632720A successfully refreshed from Google Patents.
US2632720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for countercurrent contacting of solids with liquids
Assignee: Standard Oil Development Co
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Filing: 1947-12-06
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Granted: 1953-03-24
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Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Stephen F Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:23
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/0242; B01D2011/002
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
180 words
THE METHOD OF CONTACTING A LIQUID WITH GRANULAR SOLIDS HAVING A PARTICLE SIZE OF ABOUT 20 TO 200 MESH IN CONTIGUOUS SUPERIMPOSED CONTACTING ZONES SEPARATED BY PERFORATED PARTITIONS WHICH COMPRISES INTRODUCING SAID GRANULAR SOLIDS INTO AN UPPER ZONE AND INTRODUCING SAID LIQUID INTO A LOWER ZONE, THEREAFTER PASSING SAID LIQUID UPWARDLY THROUGH SUCCESSIVE SUPERIMPOSED ZONES TO THE SAID UPPER ZONE, SAID LIQUID BEING INTRODUCED TO EACH OF SAID ZONE AT A PLURALITY OF POINTS DISTRIBUTED SUBSTANTIALLY THROUGHOUT THE LOWER LEVEL OF EACH OF THE ZONES AT AN UPWARDLY FLOWING MAXIMUM VELOCITY OF ABOUT 1 TO 5 FEET PER MINUTE, AND SAID LIQUID BEING REMOVED FROM THE SAID UPPER ZONE, MAINTAINING SAID GRANULAR SOLIDS IN EACH OF SAID ZONE AS A TURBULENT SLURRY PHASE HAVING AN INTERFACE SURMOUNTED BY CLEAR LIQUID EXTENDING SUBSTANTIALLY THROUGHOUT EACH ZONE, AND MAINTAINING SAID SOLIDS IN A RESTRICTED COLUMN EXTENDING BETWEEN ADJOINING ZONES AS A DENSE SLURRY PHASE PREVENTING ANY SUBSTANTIAL LIQUID FLOW THROUGH SAID DENSE SLURRY PHASE, WHEREBY SAID GRANULAR SOLIDS FLOW DOWNWARDLY THROUGH SUCCESSIVE ZONES, AND REMOVING SAID SOLIDS FROM THE SAID LOWER ZONE.
Claim 2
Independent Claim
180 words
THE METHOD OF CONTACTING A LIQUID WITH GRANULAR SOLIDS HAVING A PARTICLE SIZE OF ABOUT 20 TO 200 MESH IN CONTIGUOUS SUPERIMPOSED CONTACTING ZONES SEPARATED BY PERFORATED PARTITIONS WHICH COMPRISES INTRODUCING SAID GRANULAR SOLIDS INTO AN UPPER ZONE AND INTRODUCING SAID LIQUID INTO A LOWER ZONE, THEREAFTER PASSING SAID LIQUID UPWARDLY THROUGH SUCCESSIVE SUPERIMPOSED ZONES TO THE SAID UPPER ZONE, SAID LIQUID BEING INTRODUCED TO EACH OF SAID ZONE AT A PLURALITY OF POINTS DISTRIBUTED SUBSTANTIALLY THROUGHOUT THE LOWER LEVEL OF EACH OF THE ZONES AT AN UPWARDLY FLOWING MAXIMUM VELOCITY OF ABOUT 1 TO 5 FEET PER MINUTE, AND SAID LIQUID BEING REMOVED FROM THE SAID UPPER ZONE, MAINTAINING SAID GRANULAR SOLIDS IN EACH OF SAID ZONE AS A TURBULENT SLURRY PHASE HAVING AN INTERFACE SURMOUNTED BY CLEAR LIQUID EXTENDING SUBSTANTIALLY THROUGHOUT EACH ZONE, AND MAINTAINING SAID SOLIDS IN A RESTRICTED COLUMN EXTENDING BETWEEN ADJOINING ZONES AS A DENSE SLURRY PHASE PREVENTING ANY SUBSTANTIAL LIQUID FLOW THROUGH SAID DENSE SLURRY PHASE, WHEREBY SAID GRANULAR SOLIDS FLOW DOWNWARDLY THROUGH SUCCESSIVE ZONES, AND REMOVING SAID SOLIDS FROM THE SAID LOWER ZONE.
Claim 3
Dependent Claim
171 words
APPARATUS FOR CONTINOUSLY COUNTERCURRENTLY CONTACTING SOLID PARTICLES WITH LIQUID COMPRISING A VERTICALLY ELONGATED VESSEL, A LIQUID INLET LINE AT THE BOTTOM OF THE VESSEL AND A LIQUID DRAWOFF LINE AT THE TOP OF THE VESSEL, MEANS FOR INTRODUCING SOLIDS TO A LIQUID SYSTEM AT THE TOP OF THE VESSEL AND MEANS FOR REMOVING SOLIDS FROM A LIQUID SYSTEM AT THE BOTTOM OF THE VESSEL, A PLURALITY OF HORIZONTALLY DISPOSED VERTICALLY DISPLACED PERFORATED PLATES POSITIONED THROUGHOUT THE VESSEL DEFINING A PLURALITY OF TREATING ZONES, SAID PERFORATED PLATES BEING ADAPTED TO PERMIT THE PASSAGE OF LIQUIDS BUT TO PREVENT THE PASSAGE OF SOLID PARTICLES, AT LEAST ONE CONDUIT EXTENDING THROUGH EACH OF SAID PERFORATED PLATES ON ONE SIDE OF THE SAID TOWER, THE CONDUITS OF THE ADJACENT PLATES ABOVE AND BEING POSITIONED AT THE OPPOSITE SIDE OF THE TOWER, AND THE CONDUITS OF ADJACENT PAIRS OF PLATES EXTENDING TO SUBSTANTIALLY THE SAME HORIZONTAL LEVEL INTERMEDIATE THE PLATES, AND VALVE MEANS ASSOCIATED WITH EACH OF SAID CONDUITS ADAPTED TO CONTROL PASSAGE OF SOLIDS THERETHROUGH.
Claim 4
Dependent Claim
171 words
APPARATUS FOR CONTINOUSLY COUNTERCURRENTLY CONTACTING SOLID PARTICLES WITH LIQUID COMPRISING A VERTICALLY ELONGATED VESSEL, A LIQUID INLET LINE AT THE BOTTOM OF THE VESSEL AND A LIQUID DRAWOFF LINE AT THE TOP OF THE VESSEL, MEANS FOR INTRODUCING SOLIDS TO A LIQUID SYSTEM AT THE TOP OF THE VESSEL AND MEANS FOR REMOVING SOLIDS FROM A LIQUID SYSTEM AT THE BOTTOM OF THE VESSEL, A PLURALITY OF HORIZONTALLY DISPOSED VERTICALLY DISPLACED PERFORATED PLATES POSITIONED THROUGHOUT THE VESSEL DEFINING A PLURALITY OF TREATING ZONES, SAID PERFORATED PLATES BEING ADAPTED TO PERMIT THE PASSAGE OF LIQUIDS BUT TO PREVENT THE PASSAGE OF SOLID PARTICLES, AT LEAST ONE CONDUIT EXTENDING THROUGH EACH OF SAID PERFORATED PLATES ON ONE SIDE OF THE SAID TOWER, THE CONDUITS OF THE ADJACENT PLATES ABOVE AND BEING POSITIONED AT THE OPPOSITE SIDE OF THE TOWER, AND THE CONDUITS OF ADJACENT PAIRS OF PLATES EXTENDING TO SUBSTANTIALLY THE SAME HORIZONTAL LEVEL INTERMEDIATE THE PLATES, AND VALVE MEANS ASSOCIATED WITH EACH OF SAID CONDUITS ADAPTED TO CONTROL PASSAGE OF SOLIDS THERETHROUGH.
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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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |