US2877175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for handling combined shot catalyst mixtures
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-08-01
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Granted: 1959-03-10
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Donald D Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:20
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14; B; B01; B01J; B01J38/00; B01J38/04; B01J38/12; B01J8/00; B01J8/18; B01J8/1845; B01J8/1863; B01J8/24; B01J8/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A METHOD OF CONVERTING HYDROCARBONS IN CONTACT WITH A MIXTURE OF A MAJOR PROPORTION OF FINELY DIVIDED CATALYST PARTICLES AND A MAJOR PROPORTION OF FINLEY DIVIDED TRANSFER SOLIDS OR SHOT IN A DENSE, FLUIDIZED BED, AND IN WHICH CATALYST AND SHOT ARE CONTINUOUSLY WITHDRAWN FROM THE REACTION ZONE, CIRCULATED TO A REGENERATION ZONE WHERE CARBONACEOUS DEPOSITS ARE BURNED OFF AND THE CATALYST AND SHOT ARE HEATED FOR RETURN TO THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES CIRCULATING SHOT FROM THE REACTOR TO THE REGENERATOR AND BACK TO THE REACTOR AT A FASTER RATE THAN THE CATALYST, MAINTAINING A RELATIVELY QUIESCENT BOBY OF SHOT PARTICLES IN A STORAGE ZONE AT THE
Claim 2
Dependent Claim
111 words
IN A METHOD OF CONVERTING HYDROCARBONS IN CONTACT WITH A MIXTURE OF A MAJOR PROPORTION OF FINELY DIVIDED CATALYST PARTICLES AND A MAJOR PROPORTION OF FINLEY DIVIDED TRANSFER SOLIDS OR SHOT IN A DENSE, FLUIDIZED BED, AND IN WHICH CATALYST AND SHOT ARE CONTINUOUSLY WITHDRAWN FROM THE REACTION ZONE, CIRCULATED TO A REGENERATION ZONE WHERE CARBONACEOUS DEPOSITS ARE BURNED OFF AND THE CATALYST AND SHOT ARE HEATED FOR RETURN TO THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES CIRCULATING SHOT FROM THE REACTOR TO THE REGENERATOR AND BACK TO THE REACTOR AT A FASTER RATE THAN THE CATALYST, MAINTAINING A RELATIVELY QUIESCENT BOBY OF SHOT PARTICLES IN A STORAGE ZONE AT THE
References Cited (Backward Citations)
US2446247A
Cited
US2586818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |