US2949349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black wet pelleting process and apparatus
Assignee: Phillips Petroleum Co
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Filing: 1957-03-20
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Granted: 1960-08-16
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 William R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
150 words
A PROCESS FOR PRODUCING CARBON BLACK IN PELLETED FROM COMPRISING PASSING AN EFFLUENT GASEOUS SUSPENSION OF CARBON BLACK FROM AT LEAST ONE CARBON BLACK FURNACE THAN A GAS-SOLIDS SEPARATION ZONE SO AS TO REMOVE THE MAJOR PORTION OF THE CARBON BLACK, PASSING THE EFFLUENT GAS FROM SAID SEPARATION ZONE THRU A FIRST PLURALITY OF BAG FILTERS IN PARALLEL TO REMOVE THE MAJOR PORTION OF THE RESIDUAL CARBON BLACK, PASSING RECOVERED CARBON BLACK TO A WET PELLETTING MILL AND WET PELLETING SAME THEREIN, DRYING THE EFFLUENT PELLETS, SEPARATING OVERSIZE PELLETS AND FINES FROM SAID EFFLUENT PELLETS, SUSPENDING SAID FINES AND OVERSIZE PELLETS IN A GASEOUS STREAM AS RERUN CARBON BLACK, PASSING SAID STREAM THRU A SECOND PLURALITY OF BAG FILTERS VENTING BACKFLOW FROM THE COMMON FILTER TO OTHER FILTERS IN THE FIRST PLURALITY: AND PASSING THE RECOVERED RERUN CARBON BLACK TO SAID PELLETING MILL AS A PORTION OF THE FEED THERETO.
Claim 2
Dependent Claim
114 words
APPARATUS FOR PRODUCING WET CARBON BLACK PELLETS AT A SUBSTANTIALLY CONSTANT RATE COMPRISING IN COMBINATION, A PELLET MILL HAVING AN INLET LINE FOR CARBON BLACK AND AN EFFLUENT LINE FOR PELLETS: A WATER LINE LEADING INTO SAD MILL HAVING A FLOW CONTROL VALVE THEREIN: A CARBON BLACK FEEDER IN SAID INLET: A MOTOR ARRANGED TO DRIVE SAID FEEDER: WEIGHING MEANS IN SAID EFFLUENT LINE SENSITIVE TO THE WEIGHT RATE OF PELLETS PASSING THERETHRU WHICH EMITS A SIGNAL OF AN INTENSITY PROPORTIONAL TO SAID WEIGHT RATE, SPEED CONTROL MEANS ON SAID MOTOR, CONTROL MEANS DIRECTLY RESPONSIVE TO SAID SIGNAL IN DIRECT CONTROL OF SAID SPEED CONTROL MEANS, ADAPTED TO MAINTAIN SAID WEIGHT RATE SUBSTANTIALLY CONSTANT.
Claim 3
Dependent Claim
143 words
A PROCESS FOR PELLETING FLOCCUENT CARBON BLACK WITH WATER COMPRISING CONTINUOUSLY FEEDING A STREAM OF SAID BLACK INTO A WET PELLETING ZONE BY MEANS OF A MECHANICAL FEEDER, CONTINUOUSLY PASSING A SEPARATE STREAM OF WATER INTO SAID ZONE IN SUITABLE PROPORTION TO SAID BLACK TO FORM WET PELLETS, MIXING AND AGITATING THE WATER AND BLACK IN SAID ZONE SO AS TO FORM A CONTINUOUS EFFLUENT STREAM OF WET PELLETS, CONTINUOUSLY PASSING ALL OF SAID EFFLUENT STREAM THRU A WEIGHING ZONE TO DETERMINE THE WEIGHT RATE OF PRODUCING WET PELLETS, AND MAINTAINING THE PROPORTIONS OF WATER AND BLACK SUITABLE FOR GOOD PELLETING BY FEEDING A CONSTANT STREAM OF WATER AND REGULATING THE RATE OF FEEDING SAID BLACK BY VARYING THE RATE OF SAID MECHANICAL FEEDER IN RESPONSE TO SAID WEIGHT RATE SO AS TO MAINTAIN SAID WEIGHT RATE OF PRODUCING WET PELLETS SUBSTANTIALLY CONSTANT.
References Cited (Backward Citations)
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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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |