US2864763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized solids catalytic reforming process
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-08-02
•
Granted: 1958-12-16
•
Expires: 1974-08-02
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Schulman
- 👤 Walter G May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:49
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A METHOD OF CARRYING OUT ENDOTHERMIC REACTIONS WHICH COMPRISES CONTACTING VAPOROUS REACTANTS WITH A MIXTURE OF A MAJOR PROPORTION OF FINELY DIVIDED SOLID CATALYST PARTICLES AND A MINOR PROPORTION OF INERT HEAT TRANSFER SOLID PARTICLES OF GREATER DENSITY AND LARGER AVERAGE PARTICLE SIZE THAN SAID CATALYST PARTICLES IN A MAIN REACTION ZONE, CONTINUOUSLY INTRODUCING CATALYST AND HEAT TRANSFER SOLID PARTICLES AND VAPOROUS REACTANTS TO THE BOTTOM OF THE MAIN REACTION ZONE, CONTROLLING THE VAPOR VELOCITIES THROUGH SAID MAIN REACTION ZONE TO FORM A DENSE, FLUIDIZED BED OF SOLID PARTICLES AND VAPOROUS REACTANTS IN SAID REACTION ZONE, CONTINUOUSLY REMOVING VAPOROUS REACTION PRODUCTS SUBSTANTIALLY FREE OF SOLID PARTICLES OVERHEAD FROM SAID MAIN REACTION ZONE, CONTINUOUSLY REMOVING A MIXTURE OF CATALYST PARTICLES AND INERT HEAT TRANSFER SOLIDS FROM THE UPPER PORTION OF THE DENSE FLUIDIZED BED IN SAID MAIN REACTION ZONE, TRANSFERRING THE WITHDRAWN MIXTURE OF SOLIDS TO A SETTLING VESSEL PASSING AN AERATION GAS INTO THE BOTTOM OF SAID SETTLING VESSEL AT A RELATIVELY LOW VELOCITY PERMITTING THE SETTLING OF THE HEAT TRANSFER SOLIDS TO THE BOTTOM OF SAID SETTLING VESSEL,
Claim 2
Independent Claim
179 words
A METHOD OF CARRYING OUT ENDOTHERMIC REACTIONS WHICH COMPRISES CONTACTING VAPOROUS REACTANTS WITH A MIXTURE OF A MAJOR PROPORTION OF FINELY DIVIDED SOLID CATALYST PARTICLES AND A MINOR PROPORTION OF INERT HEAT TRANSFER SOLID PARTICLES OF GREATER DENSITY AND LARGER AVERAGE PARTICLE SIZE THAN SAID CATALYST PARTICLES IN A MAIN REACTION ZONE, CONTINUOUSLY INTRODUCING CATALYST AND HEAT TRANSFER SOLID PARTICLES AND VAPOROUS REACTANTS TO THE BOTTOM OF THE MAIN REACTION ZONE, CONTROLLING THE VAPOR VELOCITIES THROUGH SAID MAIN REACTION ZONE TO FORM A DENSE, FLUIDIZED BED OF SOLID PARTICLES AND VAPOROUS REACTANTS IN SAID REACTION ZONE, CONTINUOUSLY REMOVING VAPOROUS REACTION PRODUCTS SUBSTANTIALLY FREE OF SOLID PARTICLES OVERHEAD FROM SAID MAIN REACTION ZONE, CONTINUOUSLY REMOVING A MIXTURE OF CATALYST PARTICLES AND INERT HEAT TRANSFER SOLIDS FROM THE UPPER PORTION OF THE DENSE FLUIDIZED BED IN SAID MAIN REACTION ZONE, TRANSFERRING THE WITHDRAWN MIXTURE OF SOLIDS TO A SETTLING VESSEL PASSING AN AERATION GAS INTO THE BOTTOM OF SAID SETTLING VESSEL AT A RELATIVELY LOW VELOCITY PERMITTING THE SETTLING OF THE HEAT TRANSFER SOLIDS TO THE BOTTOM OF SAID SETTLING VESSEL,
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |