Hydrocracking and hydrodesulfurization process
Abstract
Abstract AN IMPROVED PROCESS FOR THE HYDROCRACKING AND HYDRODESULFURIZATION OF HEAVY HYDROCARBON OILS SUCH AS RESIDUAL OILS WHICH IS CHARACTERIZED BY HIGH CONVERSION AND EFFICIENT SULFUR REMOVAL. THE PROCESS INVOLVES A FIRST STEP IN WHICH THE HYDROCARBON OIL AND HYDROGEN ARE REACTED AT ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF AN ACTIVE PARTICULATE HYDRODESULFURIAZATION CATALYST WHEREIN HYDROCRACKING OCCURS UP TO ABOUT 50% CONVERSION. THE REACTION PRODUCT IS THEREAFTER REACTED IN A SECOND STEP WITH HYDROGEN AT ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A LESS ACTIVE PARTICULATE HYDRODESULFURIZATION CATALYST WHEREIN HYDROCRACKING IS CARRIED TO AN OVERALL CONVERSION OF UP TO ABOUT 80% AND SULFUR CONTENT IS REDUCED TO A LOW LEVEL.
Inventors
- 👤 W Mounce
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |