Patent US3290241A successfully refreshed from Google Patents.
US3290241A
Expired / Lapsed
US
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Catalytic hydrocarbon conversion and stripping process
Assignee: Pullman Inc
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Filing: 1965-11-26
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Granted: 1966-12-06
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Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wickham
- 👤 Louis F Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD FOR CATALYTICALLY CONVERTING RELATIVELY HIGH BOILING HYDROCARBONS TO LOWER BOILING PRODUCTS IN A HEAT BALANCED CONVERSION SYSTEM WHICH COMPRISES: MAINTAINING A FIRST RELATIVELY DENSE FLUIDIZED BED OF CATALYST UNDERGOING REGENERATION IN A REGENERATION ZONE SUPERIMPOSED VERTICALLY ABOVE A SECOND RELATIVELY DENSE BED OF CATALYST PARTICIPATING IN CONVERSION IN A REACTION ZONE, FLOWING REGENERATED CATALYST DOWNWARDLY FROM SAID REGENERATION ZONE EXCLUSIVLEY INTO THE SECOND DENSE BED TO PROVIDE A CATALYST MIXTURE HAVING REDUCED ACTIVITY AND A TEMPERATURE WHICH IS SUBSTANTIALLY LOWER THAN THAT OF THE FRESHLY REGENERATED CATALYST, CONTACTING A RELATIVELY HIGH BOILING LIQUID HYDROCARBON OIL AND SOLID MATERIAL CONSISTING OF SAID CATALYST MIXTURE TO VAPORIZE AT LEAST A PORTION OF SUCH LIQUID AND TO PRODUCE AN UPFLOWING CONFINED SUSPENSION OF CATALYST AND HYDROCARBON MATERIAL, AND MAINTAINING HYDROCARBON CONVERSION CONDITIONS WITHIN THE SAID SUSPENSION, DISCHARGING SAID SUSPENSION ADJACENT THE UPPER LEVEL
Claim 2
Independent Claim
142 words
A METHOD FOR CATALYTICALLY CONVERTING RELATIVELY HIGH BOILING HYDROCARBONS TO LOWER BOILING PRODUCTS IN A HEAT BALANCED CONVERSION SYSTEM WHICH COMPRISES: MAINTAINING A FIRST RELATIVELY DENSE FLUIDIZED BED OF CATALYST UNDERGOING REGENERATION IN A REGENERATION ZONE SUPERIMPOSED VERTICALLY ABOVE A SECOND RELATIVELY DENSE BED OF CATALYST PARTICIPATING IN CONVERSION IN A REACTION ZONE, FLOWING REGENERATED CATALYST DOWNWARDLY FROM SAID REGENERATION ZONE EXCLUSIVLEY INTO THE SECOND DENSE BED TO PROVIDE A CATALYST MIXTURE HAVING REDUCED ACTIVITY AND A TEMPERATURE WHICH IS SUBSTANTIALLY LOWER THAN THAT OF THE FRESHLY REGENERATED CATALYST, CONTACTING A RELATIVELY HIGH BOILING LIQUID HYDROCARBON OIL AND SOLID MATERIAL CONSISTING OF SAID CATALYST MIXTURE TO VAPORIZE AT LEAST A PORTION OF SUCH LIQUID AND TO PRODUCE AN UPFLOWING CONFINED SUSPENSION OF CATALYST AND HYDROCARBON MATERIAL, AND MAINTAINING HYDROCARBON CONVERSION CONDITIONS WITHIN THE SAID SUSPENSION, DISCHARGING SAID SUSPENSION ADJACENT THE UPPER LEVEL
References Cited (Backward Citations)
US2900325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |