High conversion level hydrogenation
Abstract
Abstract HYDRODESULFURIZATION CATALYSTS WHICH ARE NORMALLY MANUFACTURED FOR USE IN THE HYDROCONVERSION OF RESIDUAL OILS TO LIGHTER BOILING PRODUCTS CONSIST OF MIXTURES OF RELATIVELY POROUS AND RELATIVELY NONPOROUS CATALYST PARTICLES AS A FUNCTION OF THE MANUFACTURING PROCEDURE. IN THE EBULLATED PROCESS, FOR HIGH CONVERSION LEVEL OPERATIONS, THERE IS A CRITICAL LIMIT TO THE AMOUNT OF NONPOROUS CATALYST PARTICLES THAT CAN EXIST IN A MIXTURE BEFORE THE DEFLUIDIZATION OF THE CATALYST SYSTEM OCCURS. IN USING MICROSPHEROIDAL OR EXTRUDATE CATALYST, THE AMOUNT OF NONPOROUS CATALYST CONTAINED IN THE CATALYST BED TO THE UNIT IS LIMITED TO ABOUT 10% BEFORE DEFLUIDIZATION OF THE CATALYST SYSTEM SETS IN WHEN OPERATING AT CONVERSION LEVELS EXCEEDING 60%.
Inventors
- 👤 R Wolk
- 👤 M Chervenak
- 👤 S Alpert
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |