Patent US2985584A successfully refreshed from Google Patents.
US2985584A
Expired / Lapsed
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Regeneration of coked catalyst with controlled oxygen content of the regeneration gas
Assignee: Union Carbide Corp
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Filing: 1958-11-07
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Granted: 1961-05-23
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Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jule A Rabo
- 👤 John B Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:07
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A PROCESS OF CONVERTING HYDROCARBONS IN THE PRESENCE OF FINELY DIVIDED SILICA-ALUMINA CATALYST WHEREIN PREHEATED HYDROCARBON VAPORS AND GASES ARE MIXED WITH FINELY DIVIDED CATALYST PARTICLES AND THE MIXTURE IS PASSED THROUGH A REACTION ZONE TO EFFECT THE DESIRED CONVERSION DURING WHICH THE CATALYST PARTICLES BECOME COATED WITH VOLATILE HYDROCARBONS AND COKE AFTER WHICH THE COATED CATALYST PARTICLES ARE REMOVED FROM THE REACTION ZONE FOR SEPARATION FROM THE CONVERSION PRODUCTS AND REGENERATED IN A REGENERATION ZONE BY BURNING WITH OXYGENCONTAINING GAS WHICH IS CONVERTED THEREBY TO CARBON OXIDES-CONTAINING REDUCED GAS AND VENTED AS TOP EFFLUENT GAS, THE REGENERATED CATALYST PARTICLES BEING RECYCLED TO SAID REACTION ZONE FOR REUSE THEREIN, THE IMPROVEMENT COMPRISING THE STEP OF EFFECTING SUCH REGENERATION IN SAID REGENERATION ZONE BY CONTACT WITH A GAS STREAM CONTAINING BETWEEN ABOUT 23% AND 30% BY VOLUME OXYGEN EQUIVALENT AT A TEMPERATURE BETWEEN ABOUT 1,000*
Claim 2
Dependent Claim
145 words
IN A PROCESS OF CONVERTING HYDROCARBONS IN THE PRESENCE OF FINELY DIVIDED SILICA-ALUMINA CATALYST WHEREIN PREHEATED HYDROCARBON VAPORS AND GASES ARE MIXED WITH FINELY DIVIDED CATALYST PARTICLES AND THE MIXTURE IS PASSED THROUGH A REACTION ZONE TO EFFECT THE DESIRED CONVERSION DURING WHICH THE CATALYST PARTICLES BECOME COATED WITH VOLATILE HYDROCARBONS AND COKE AFTER WHICH THE COATED CATALYST PARTICLES ARE REMOVED FROM THE REACTION ZONE FOR SEPARATION FROM THE CONVERSION PRODUCTS AND REGENERATED IN A REGENERATION ZONE BY BURNING WITH OXYGENCONTAINING GAS WHICH IS CONVERTED THEREBY TO CARBON OXIDES-CONTAINING REDUCED GAS AND VENTED AS TOP EFFLUENT GAS, THE REGENERATED CATALYST PARTICLES BEING RECYCLED TO SAID REACTION ZONE FOR REUSE THEREIN, THE IMPROVEMENT COMPRISING THE STEP OF EFFECTING SUCH REGENERATION IN SAID REGENERATION ZONE BY CONTACT WITH A GAS STREAM CONTAINING BETWEEN ABOUT 23% AND 30% BY VOLUME OXYGEN EQUIVALENT AT A TEMPERATURE BETWEEN ABOUT 1,000*
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |