Catalytic liquefaction of coal using synthesis gas
Abstract
Abstract THE LIQUEFACTION OF COAL IN A HYDROGEN DONOR SOLVENT IS CARRIED OUT IN THE PRESENCE OF A CARBON MONOXIDE SENDITIVE CATALYST AND A CARBON MONOXIDE-CONTAINING TREAT GAS UNDER REACTION CONDITIONS INCLUDING A TEMPERATURE FROM ABOUT 750 TO ABOUT 900* F., A PRESSURE FROM ABOUT 500 TO ABOUT 4500 P.S.I.G., A TREAT GAS-TO-SOLVENT RATIO FROM ABOUT 2,000 TO ABOUT 15,000 S.C.F./B., A SOLVENT-TO-COAL RATIO FROM ABOUT 1.0 TO ABOUT 2.5 LB./LB., AND A SLURRY/ CATALYST RATIO FROM 0.25 TO 4 W./HR./W. STEAM IS INTRODUCED INTO THE LIQUEFACTION ZONE AT A RATE FROM ABOUT 1 TO ABOUT 4 MOLS OF STEAM PER MOL OF CARBON MONOXIDE, WHEREBY SAID COAL IS LIQUIFIED WITHOUT UNDUE DEACTIVATION OF SAID CATALYST BY SAID CARBON MONOXIDE.
Inventors
- 👤 Frank B Sprow
- 👤 John E Keller
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |