Patent US2808368A successfully refreshed from Google Patents.
US2808368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predicting bed defluidization in fluid cokers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-04-04
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Granted: 1957-10-01
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Jr John Frederick Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A FLUID COKING PROCESS WHEREING AN OIL IS PYROLYTICALLY CONVERTED BY CONTACT WITH A FLUIDIZED BED OF SOLIDS MAINTAINED AT A COKING TEMPERATURE IN A COKING ZONE TO VAPOROUS CONVSION PRODUCTS AND RESIDUE WHICH IS DEPOSITED ON SAID SOLIDS, METHOD OF DETERMINING THE ONSET OF BOGGING OF SAID FLUIDIZED BED, WHICH COMPRISES WITHDRAWING A PORTIONOF SAID FLUIDIZED BED, INTRODUCTING SAID PORTION INTO A RELATIVELY SMALL COKING ZONE, FLUIDIZING THE SOLIDS IN SAID SMALL COKING ZONE AT A GAS VELOCITY SUBSTANTIALLY EQUAL TO THAT IN SAIDFLUIDIZED BED, MAINING TEMPERATURE, FLOWING SOLIDS FROM SAID SMALL COKING ZONE AT A RATE SUFFICIENT TO MAINTAIN A SUBSTANTIALLY CONSTANT SOLIDS HOLDUP THEREIN, REMOVING CONVERSION PRODUCTS OVERHEAD FROM SAID SMALL COKING ZONE, INTRODDUCING A SMALL AMOUNT OF SAID OIL INTO SAID SMALL COKING ZONE, AND DECREASING THE LIQUID CONTENT OF THE SOLIDS OF SAID FLUIDIZED BED WHICH THE SOLIDS IN SAID COKING ZONE BEING TO BOG.
Claim 2
Dependent Claim
151 words
IN A FLUID COKING PROCESS WHEREING AN OIL IS PYROLYTICALLY CONVERTED BY CONTACT WITH A FLUIDIZED BED OF SOLIDS MAINTAINED AT A COKING TEMPERATURE IN A COKING ZONE TO VAPOROUS CONVSION PRODUCTS AND RESIDUE WHICH IS DEPOSITED ON SAID SOLIDS, METHOD OF DETERMINING THE ONSET OF BOGGING OF SAID FLUIDIZED BED, WHICH COMPRISES WITHDRAWING A PORTIONOF SAID FLUIDIZED BED, INTRODUCTING SAID PORTION INTO A RELATIVELY SMALL COKING ZONE, FLUIDIZING THE SOLIDS IN SAID SMALL COKING ZONE AT A GAS VELOCITY SUBSTANTIALLY EQUAL TO THAT IN SAIDFLUIDIZED BED, MAINING TEMPERATURE, FLOWING SOLIDS FROM SAID SMALL COKING ZONE AT A RATE SUFFICIENT TO MAINTAIN A SUBSTANTIALLY CONSTANT SOLIDS HOLDUP THEREIN, REMOVING CONVERSION PRODUCTS OVERHEAD FROM SAID SMALL COKING ZONE, INTRODDUCING A SMALL AMOUNT OF SAID OIL INTO SAID SMALL COKING ZONE, AND DECREASING THE LIQUID CONTENT OF THE SOLIDS OF SAID FLUIDIZED BED WHICH THE SOLIDS IN SAID COKING ZONE BEING TO BOG.
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |