Dual riser fluid catalytic cracking with zsm-5 zeolite
Abstract
Abstract A METHOD OF CRACKING A HYDROCARBON CHARGE STOCK WHICH COMPRISES PASSING SAID CHARGE STOCK INTO A REACTION ZONE TOGETHER WITH A CATALYST COMPOSITION COMPRISING TWO CRACKING COMPONENTS, ONE OF WHICH IS A ZEOLITE COMPONENT IDENTIFIED AS A ZSM-5 TYPE ZEOLITE, WITHDRAWING SAID CATALYST COMPOSITION FROM THE REACTION PRODUCTS, WITHDRAWING HYDROCARBON FROM THE REACTION ZONE, SEPARATING UNREACTED HYDROCARBON CHARGE AND INTRODUCING UNREACTED HYDROCARBON CHARGE INTO A SECOND REACTION ZONE TOGETHER WITH A CATALYST COMPOSITION COMPRISING TWO CRACKING COMPONENTS ONE OF WHICH IS A ZEOLITE COMPONENT IDENTIFIED AS ZSM-5 TYPE ZEOLITE, WITHDRAWING THE REACTION COMPONENTS AND RECOVERING LIQUID PRODUCT.
Inventors
- 👤 E Demmel
- 👤 H Owen
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |