US3344057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coking process
Assignee: Union Oil Company of California
•
Filing: 1965-11-02
•
Granted: 1967-09-26
•
Expires: 1985-11-02
Abstract
No abstract record available.
Inventors
- 👤 John T Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:46
CPC Classifications
C; C10; C10B; C10B55/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A DELAYED THERMAL COKING PROCESS WHEREIN PREHEATED FEED COMPRISING CRUDE OIL RESIDUUM IS PASSED ALTERNATELY TO A SERIES OF SOAKING DRUMS IN SEQUENCE SUCH THAT AT LEAST TWO DRUMS ARE ALWAYS ON-STREAM BUT IN STAGGERED PHASES OF THE COKE-FILLING CYCLE, THE CONDITIONS WITHIN SAID DRUMS BEING SUCH THAT CRACKED PRODUCT VAPORS ARE CONTINUOUSLY EVOLVED WITH ACCOMPANYING FOAMING AND FROTHING WHILE COKE DEPOSITES BUILD UP TO SUCCESSIVELY HIGHER LEVELS THEREIN AND WHEREIN PRODUCT VAPORS ARE CONTINUOUSLY WITHDRAWN OVERHEAD, THE IMPROVED METHOD FOR AVOIDING CARRYOVER TO PRODUCT FRACTIONATION EQUIPMENT OF ENTRAINED COKE AND FROTH IN SAID PRODUCT VAPORS SUCH AS NORMALLY OCCURS WHEN THE COKE LEVEL IN SAID DRUMS APPROACHES THE OVERHEAD VAPOR OUTLET THEREOF, WHICH COMPRISES DIVERTING THE PRODUCT VAPORS FROM EACH DRUM ENTERING THE TERMINAL PHASE OF A FILL CYCLE TO THE VAPOR SPACE IN THE UPPER PORTION OF ANOTHER DRUM WHICH IS IN THE INITIAL
Claim 2
Dependent Claim
147 words
IN A DELAYED THERMAL COKING PROCESS WHEREIN PREHEATED FEED COMPRISING CRUDE OIL RESIDUUM IS PASSED ALTERNATELY TO A SERIES OF SOAKING DRUMS IN SEQUENCE SUCH THAT AT LEAST TWO DRUMS ARE ALWAYS ON-STREAM BUT IN STAGGERED PHASES OF THE COKE-FILLING CYCLE, THE CONDITIONS WITHIN SAID DRUMS BEING SUCH THAT CRACKED PRODUCT VAPORS ARE CONTINUOUSLY EVOLVED WITH ACCOMPANYING FOAMING AND FROTHING WHILE COKE DEPOSITES BUILD UP TO SUCCESSIVELY HIGHER LEVELS THEREIN AND WHEREIN PRODUCT VAPORS ARE CONTINUOUSLY WITHDRAWN OVERHEAD, THE IMPROVED METHOD FOR AVOIDING CARRYOVER TO PRODUCT FRACTIONATION EQUIPMENT OF ENTRAINED COKE AND FROTH IN SAID PRODUCT VAPORS SUCH AS NORMALLY OCCURS WHEN THE COKE LEVEL IN SAID DRUMS APPROACHES THE OVERHEAD VAPOR OUTLET THEREOF, WHICH COMPRISES DIVERTING THE PRODUCT VAPORS FROM EACH DRUM ENTERING THE TERMINAL PHASE OF A FILL CYCLE TO THE VAPOR SPACE IN THE UPPER PORTION OF ANOTHER DRUM WHICH IS IN THE INITIAL
References Cited (Backward Citations)
US1873024A
Cited
US3248321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |