US2721168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed coke production in fluid coking systems using oxidation to increase friability
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-10-14
•
Granted: 1955-10-18
•
Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles N Kimberlin
- 👤 Ralph B Mason
- 👤 Robert W Krebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A HYDROCARBON OIL FLUID COKING PROCESS WHEREIN AN OIL IS PYROLYTICALLY CONVERTED IN A COKING ZONE BY CONTACT WITH FLUIDIZED PARTICULATE COKE MAINTAINED AT A COKING TEMPERATURE TO GASIFORM CONVERSION PRODUCTS AND CARBONACEOUS RESIDUE WHICH IS DEPOSITED ON SAID SOLIDS, A METHOD OF SUPPLYING SEED COKE TO SAID PROCESS WHICH COMPRISES WITHDRAWING A PORTION OF SAID PARTICULATE COKE FROM SAID PROCESS AND BURNING 3 TO 50 WT. PER CENT OF THE COKE SO WITHDRAWN AT A TEMPERATURE IN THE RANGE OF 600* TO 1500* F., SAID BURNING BEING ACCOMPLISHED BY FLUIDIZING THE COKE PARTICLES WITH A FREE-OXYGEN CONTAINING MEDIUM IN A COMBUSTION ZONE, WHEREBY THE COKE BECOMES FRIABLE AND A SUBSTANTIAL AMOUNT OF FINE PARTICLES ARE PRODUCED BY ATTRITION, AND RETURNING THE PORTION OF COKE SO BURNT TO SAID PROCESS, SAID PORTION SO RETURNED CON-
Claim 2
Dependent Claim
136 words
IN A HYDROCARBON OIL FLUID COKING PROCESS WHEREIN AN OIL IS PYROLYTICALLY CONVERTED IN A COKING ZONE BY CONTACT WITH FLUIDIZED PARTICULATE COKE MAINTAINED AT A COKING TEMPERATURE TO GASIFORM CONVERSION PRODUCTS AND CARBONACEOUS RESIDUE WHICH IS DEPOSITED ON SAID SOLIDS, A METHOD OF SUPPLYING SEED COKE TO SAID PROCESS WHICH COMPRISES WITHDRAWING A PORTION OF SAID PARTICULATE COKE FROM SAID PROCESS AND BURNING 3 TO 50 WT. PER CENT OF THE COKE SO WITHDRAWN AT A TEMPERATURE IN THE RANGE OF 600* TO 1500* F., SAID BURNING BEING ACCOMPLISHED BY FLUIDIZING THE COKE PARTICLES WITH A FREE-OXYGEN CONTAINING MEDIUM IN A COMBUSTION ZONE, WHEREBY THE COKE BECOMES FRIABLE AND A SUBSTANTIAL AMOUNT OF FINE PARTICLES ARE PRODUCED BY ATTRITION, AND RETURNING THE PORTION OF COKE SO BURNT TO SAID PROCESS, SAID PORTION SO RETURNED CON-
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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |