US2742381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for countercurrent contacting of solids with liquids
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1952-09-10
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Granted: 1956-04-17
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Weiss Donald Eric
- 👤 Swinton Everard Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:19
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/0242; B01D11/0261; B01D15/00; B01D15/02; B01J8/00; B01J8/16; B01J8/18; B01J8/20; B01D15/08; B01D15/10; B01D15/18; B01D15/1892
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
A METHOD OF OBTAINING CONTINUOUS COUNTERCURRENT CONTACT BETWEEN SOLID ADSORBENT PARTICLES AND LIQUID WHICH COMPRISES FEEDING A PARTICULATE SOLID ABSORBENT TO ONE END PORTION OF A CONTACTING APPARATUS AND FEEDING LIQUID COUNTERCURRENTLY TO SAID SOLID FROM THE OPPOSITE END PORTION OF SUCH CONTACTING APPARATUS, PASSING SAID SOLID ALONG A SERIES OF PERFORATED PLATES ARRANGED AT PROGRESSIVELY VARYING LEVELS AND PULSATING SAID LIQUID SO THAT AT EACH PULSATION LIQUID PASSES THROUGH AND RETURNS THROUGHT THE PERFORATIONS IN SAID PLATES AND THUS PRODUCES NON-TUBULENT PARTIALLY FLUIDIZED BEDS OF SOLIDS PARTICLES IN CONTACTING COMPARTMENTS ADJACENT TO SAID PLATES, ADJUSTING THE MAGNITUDE OF THE PULSATIONS TO CONTROL THE MOBILITY OF THE PARTICLES AND ADJUSTING THE OVERALL LIQUID FLOW VELOCITY TO GIVE THE DESIRED LIQUID CONTACT TIME IN THE CONTACTING APPARATUS, PERMITTING THE PARTICLES TO FLOW CONSECUTIVELY FROM CONTACTING COMPARTMENT TO CONTACTING COMPARTMENT AT A CONTROLLED RATE, REMOVING THE PARTICLES FROM THE APPARATUS AFTER COUNTERCURRENT CONTACT WITH THE LIQUID, AND REMOVING THE LIQUID WHICH HAS PASSED COUNTERCURRENTLY TO THE SOLIDS THROUGH THE CONTACTING APPARATUS.
Claim 2
Independent Claim
169 words
A METHOD OF OBTAINING CONTINUOUS COUNTERCURRENT CONTACT BETWEEN SOLID ADSORBENT PARTICLES AND LIQUID WHICH COMPRISES FEEDING A PARTICULATE SOLID ABSORBENT TO ONE END PORTION OF A CONTACTING APPARATUS AND FEEDING LIQUID COUNTERCURRENTLY TO SAID SOLID FROM THE OPPOSITE END PORTION OF SUCH CONTACTING APPARATUS, PASSING SAID SOLID ALONG A SERIES OF PERFORATED PLATES ARRANGED AT PROGRESSIVELY VARYING LEVELS AND PULSATING SAID LIQUID SO THAT AT EACH PULSATION LIQUID PASSES THROUGH AND RETURNS THROUGHT THE PERFORATIONS IN SAID PLATES AND THUS PRODUCES NON-TUBULENT PARTIALLY FLUIDIZED BEDS OF SOLIDS PARTICLES IN CONTACTING COMPARTMENTS ADJACENT TO SAID PLATES, ADJUSTING THE MAGNITUDE OF THE PULSATIONS TO CONTROL THE MOBILITY OF THE PARTICLES AND ADJUSTING THE OVERALL LIQUID FLOW VELOCITY TO GIVE THE DESIRED LIQUID CONTACT TIME IN THE CONTACTING APPARATUS, PERMITTING THE PARTICLES TO FLOW CONSECUTIVELY FROM CONTACTING COMPARTMENT TO CONTACTING COMPARTMENT AT A CONTROLLED RATE, REMOVING THE PARTICLES FROM THE APPARATUS AFTER COUNTERCURRENT CONTACT WITH THE LIQUID, AND REMOVING THE LIQUID WHICH HAS PASSED COUNTERCURRENTLY TO THE SOLIDS THROUGH THE CONTACTING APPARATUS.
Claim 3
Dependent Claim
128 words
THE COMBINATION IN APPARATUS FOR OBTAINING CONTINUOUS COUNTERCURRENT CONTACT BETWEEN SOLID ADSORBENT PARTICLES AND LIQUID, OF A TRAIN OF RELATIVELY HORIZONTAL PERFORATED PLATES POSITIONED AT PROGESSIVELY VARYING LEVELS, COMPARTMENTS FORMED ADJACENT TO SAID PLATES, PASSAGES CONNECTING SAID COMPARTMENTS TO ADJACENT COMPARTMENTS, MEANS FOR FEEDING A LIQUID TO ONE END PORTION OF SAID APPARATUS, MEANS FOR FEEDING PARTICULATE SOLID ADSORBENT TO THE OTHER PORTION OF SAID APPARATUS, MEANS FOR PULSATING SAID LIQUID AND FOR DISTRIBUTING SUCH PULSATION, MEANS FOR WITHDRAWING SLURRY FROM A PORTION OF THE APPARATUS REMOTE FROM THAT TO WHICH THE SOLID IS FED, AND MEANS FOR WITHDRAWING LIQUID FROM A PORTION OF THE APPARATUS REMOTE FROM THAT TO WHICH THE LIQUID IS FED, THE INLET AND OUTLET PASSAGES OF EACH COMPARTMENT BEING REMOTE FROM ONE ANOTHER.
Claim 4
Dependent Claim
128 words
THE COMBINATION IN APPARATUS FOR OBTAINING CONTINUOUS COUNTERCURRENT CONTACT BETWEEN SOLID ADSORBENT PARTICLES AND LIQUID, OF A TRAIN OF RELATIVELY HORIZONTAL PERFORATED PLATES POSITIONED AT PROGESSIVELY VARYING LEVELS, COMPARTMENTS FORMED ADJACENT TO SAID PLATES, PASSAGES CONNECTING SAID COMPARTMENTS TO ADJACENT COMPARTMENTS, MEANS FOR FEEDING A LIQUID TO ONE END PORTION OF SAID APPARATUS, MEANS FOR FEEDING PARTICULATE SOLID ADSORBENT TO THE OTHER PORTION OF SAID APPARATUS, MEANS FOR PULSATING SAID LIQUID AND FOR DISTRIBUTING SUCH PULSATION, MEANS FOR WITHDRAWING SLURRY FROM A PORTION OF THE APPARATUS REMOTE FROM THAT TO WHICH THE SOLID IS FED, AND MEANS FOR WITHDRAWING LIQUID FROM A PORTION OF THE APPARATUS REMOTE FROM THAT TO WHICH THE LIQUID IS FED, THE INLET AND OUTLET PASSAGES OF EACH COMPARTMENT BEING REMOTE FROM ONE ANOTHER.
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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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |