US3281215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer recovery tank
Assignee: Phillips Petroleum Co
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Filing: 1966-02-10
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Granted: 1966-10-25
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Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert A Koble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:30
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
AN APPARATUS FOR THE SEPARATION OF A SLURRY OF FINELY DIVIDED POLYOLEFIN PARTICLES DISPERSED IN A LIQUID HYDROCARBON AND WATER ADMIXTURE WHICH COMPRISES, IN COMBINATION, A VERTICALLY DISPOSED AND CLOSED VESSEL; A FIRST ELONGATED CYLINDER OPENED AT ONE END DISPOSED IN THE TOP OF SAID CLOSED VESSEL; MEANS COMMUNICATING AT THE UPPER END OF SAID FIRST ELONGATED CYLINDER TO INTRODUCE WATER AND POLYMER SLURRY THERETO; A SECOND ELONGATED CYLINDER DISPOSED IN SAID CLOSED VESSEL IN CLOSED COMMUNICATION WITH SAID FIRST ELONGATED CYLINDER AT ITS LOWER END AND SPACED APART THEREFROM SO AS TO FORM A CLOSED ANNULUS BETWEEN SAID FIRST AND SECOND CYLINDERS, SAID FIRST CYLINDER BEING IN OPEN COMMUNICATION WITH SAID VESSEL AT ITS OPEN END AND CONTAINING A PLURALITY OF CIRCUMFERENTIALLY SPACED LOUVERED VANES THEREIN; MEANS IN AN UPPER PORTION OF SAID VESSEL FOR WITHDRAWING VAPORIZING HYDROCARBON; MEANS IN AN INTERMEDIATE PORTION OF SAID VESSEL AND OPENLY COMMUNICATING WITH SAID SECOND ELONGATED CYLINDER SO AS TO REMOVE WITHDRAWING LIQUID ACCUMULATED IN SAID ANNULUS BETWEEN SAID FIRST AND SECOND CYLINDERS; CONDUIT MEANS COMMUNICATING WITH VESSEL TO REMOVE POLYMER PARTICLES AND WATER THEREFROM, MEANS IN A LOWER PORTION OF SAID VESSEL TO INTRODUCE A STRIPPING MEDIUM THERETO; AND MEANS FOR AGITATING THE SLURRY IN THE LOWER SECTION OF SAID VESSEL.
Claim 2
Independent Claim
210 words
AN APPARATUS FOR THE SEPARATION OF A SLURRY OF FINELY DIVIDED POLYOLEFIN PARTICLES DISPERSED IN A LIQUID HYDROCARBON AND WATER ADMIXTURE WHICH COMPRISES, IN COMBINATION, A VERTICALLY DISPOSED AND CLOSED VESSEL; A FIRST ELONGATED CYLINDER OPENED AT ONE END DISPOSED IN THE TOP OF SAID CLOSED VESSEL; MEANS COMMUNICATING AT THE UPPER END OF SAID FIRST ELONGATED CYLINDER TO INTRODUCE WATER AND POLYMER SLURRY THERETO; A SECOND ELONGATED CYLINDER DISPOSED IN SAID CLOSED VESSEL IN CLOSED COMMUNICATION WITH SAID FIRST ELONGATED CYLINDER AT ITS LOWER END AND SPACED APART THEREFROM SO AS TO FORM A CLOSED ANNULUS BETWEEN SAID FIRST AND SECOND CYLINDERS, SAID FIRST CYLINDER BEING IN OPEN COMMUNICATION WITH SAID VESSEL AT ITS OPEN END AND CONTAINING A PLURALITY OF CIRCUMFERENTIALLY SPACED LOUVERED VANES THEREIN; MEANS IN AN UPPER PORTION OF SAID VESSEL FOR WITHDRAWING VAPORIZING HYDROCARBON; MEANS IN AN INTERMEDIATE PORTION OF SAID VESSEL AND OPENLY COMMUNICATING WITH SAID SECOND ELONGATED CYLINDER SO AS TO REMOVE WITHDRAWING LIQUID ACCUMULATED IN SAID ANNULUS BETWEEN SAID FIRST AND SECOND CYLINDERS; CONDUIT MEANS COMMUNICATING WITH VESSEL TO REMOVE POLYMER PARTICLES AND WATER THEREFROM, MEANS IN A LOWER PORTION OF SAID VESSEL TO INTRODUCE A STRIPPING MEDIUM THERETO; AND MEANS FOR AGITATING THE SLURRY IN THE LOWER SECTION OF SAID VESSEL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |