US3799866A
Expired / Lapsed
US
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Hydrocarbon conversion process utilizing a moving bed reactor
Assignee: Universal Oil Products Co
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Filing: 1972-10-18
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Granted: 1974-03-26
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Expires: 1992-10-18
Abstract
Abstract A MOVING BED OF A CATALYST WHICH DEACTIVATES IN A ZONAL MANNER IS TRANSFERRED DOWNWARD THROUGH A MULTIPASS RADIAL FLOW REACTOR WHILE A HYDROCARBON FEED STREAM FLOWS IN A STEPWISE COUNTERCURRENT FASHION ACROSS THE CATALYST. TO PROVIDE UNIFORM CONVERSION AND MAXIMUM USAGE OF THE CATALYST, A SONE OF ACTIVE CATALYST AND A ZONE OF DE- ACTIVATED CATALYST ARE BOTH MAINTAINED ACROSS THE HEIGHT OF A SINGLE SELECTED PASS BY CONTROLLING THE CATALYST TRANSFER RATE.
Inventors
- 👤 R Lengemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/125; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; C10; C10G; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 0
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |