US3309780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for drying wet particulate solids
Assignee: Phillips Petroleum Co
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Filing: 1966-01-10
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Granted: 1967-03-21
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Expires: 1986-01-10
Abstract
No abstract record available.
Inventors
- 👤 Robert R Goins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:00
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PROCESS FOR DRYING WET PELLETS COMPACTED FROM CARBON BLACK WHICH COMPRISES THE STEPS OF: (1) ENTRAINING SAID PELLETS IN A STREAM OF HOT DRYING GAS COMPRISING ESSENTIALLY SMOKE FROM THE CARBON BLACK REACTOR WHEREIN THE CARBON BLACK WAS PRODUCED, WATER-QUENCHED TO A TEMPERATURE IN THE RANGE OF 500 TO 100*F. TO FORM A SUSPENSION OF SAID PELLETS IN SAID GAS; (2) PASSING THE SUSPENSION OF STEP (1) THROUGH AN ELONGATED TRANSPORT DRYING ZONE OF SUBSTANTIAL LENGTH TO DRY SAME SUBSTANTIALLY; (3) PASSING SAID PELLETS FROM THE ZONE OF STEP (2) UPWARDLY INTO A FLUIDIZED BED DRYER OF EXPANDED LATERAL DIMENSION RELATIVE TO THE ZONE OF STEP (2), SAID GAS BEING THE FLUIDIZING GAS; (4) MAINTAINING SAID PELLETS IN FLUIDIZED CONDITION IN THE DRYER OF STEP (3) SO AS TO FURTHER DRY SAID PELLETS TO A RELATIVELY LOW MOISTURE CONTENT; AND (5) SEPARATELY WITHDRAWING GAS AND DRIED PELLETS FROM THE DRYER OF STEP (3).
Claim 2
Dependent Claim
154 words
A PROCESS FOR DRYING WET PELLETS COMPACTED FROM CARBON BLACK WHICH COMPRISES THE STEPS OF: (1) ENTRAINING SAID PELLETS IN A STREAM OF HOT DRYING GAS COMPRISING ESSENTIALLY SMOKE FROM THE CARBON BLACK REACTOR WHEREIN THE CARBON BLACK WAS PRODUCED, WATER-QUENCHED TO A TEMPERATURE IN THE RANGE OF 500 TO 100*F. TO FORM A SUSPENSION OF SAID PELLETS IN SAID GAS; (2) PASSING THE SUSPENSION OF STEP (1) THROUGH AN ELONGATED TRANSPORT DRYING ZONE OF SUBSTANTIAL LENGTH TO DRY SAME SUBSTANTIALLY; (3) PASSING SAID PELLETS FROM THE ZONE OF STEP (2) UPWARDLY INTO A FLUIDIZED BED DRYER OF EXPANDED LATERAL DIMENSION RELATIVE TO THE ZONE OF STEP (2), SAID GAS BEING THE FLUIDIZING GAS; (4) MAINTAINING SAID PELLETS IN FLUIDIZED CONDITION IN THE DRYER OF STEP (3) SO AS TO FURTHER DRY SAID PELLETS TO A RELATIVELY LOW MOISTURE CONTENT; AND (5) SEPARATELY WITHDRAWING GAS AND DRIED PELLETS FROM THE DRYER OF STEP (3).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |