US2737474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion of residual oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-01-23
•
Granted: 1956-03-06
•
Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles N Kimberlin
- 👤 Robert W Krebs
- 👤 Clark E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
C; C10; C10G; C10G51/00; C10G51/02; C10G51/04; C10G11/00; C10G11/14; C10G11/18; C10G9/00; C10G9/28; C10G9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A PROCESS FOR CRACKING HEAVY RESIDUAL OILS HAVING A CONRADSON CARBON OF ABOUT 5 TO 35 WEIGHT PER CENT AND AN ATMOSPHERIC BOILING RANGE SUBSTANTIALLY ABOVE 1000* F., THE IMPROVEMENT WHICH COMPRISES MIXING THE HEAVY RESIDUAL OIL WITH 20 TO 200 LBS. OF FINELY DIVIDED CRACKING CATALYST PER BARREL OF RESIDUAL OIL, PASSING THE MIXTURE THROUGH A CONVERSION ZONE AT 700 TO 900* F. AND AT A PRESSURE BETWEEN 500 TO 3000 P.S.I.G. WHICH IS SUFFICIENT TO MAINTAIN A MAJOR PORTION OF THE RESIDUAL OIL IN LIQUID PHASE, KEEPING THE MIXTURE UNDER THE SAID REACTION CONDITIONS FOR A RESIDENCE TIME BETWEEN ABOUT 2 TO 60 MINUTES TO PRODUCE A CONVERSION CORRESPONDING TO NOT MORE THAN 5 WEIGHT PER CENT OF DRY GAS FORMATION BASED ON RESIDUAL FEED AND UNTIL THE CATALYST IS JUST SUBSTANTIALLY COMPLETELY
Claim 2
Dependent Claim
136 words
IN A PROCESS FOR CRACKING HEAVY RESIDUAL OILS HAVING A CONRADSON CARBON OF ABOUT 5 TO 35 WEIGHT PER CENT AND AN ATMOSPHERIC BOILING RANGE SUBSTANTIALLY ABOVE 1000* F., THE IMPROVEMENT WHICH COMPRISES MIXING THE HEAVY RESIDUAL OIL WITH 20 TO 200 LBS. OF FINELY DIVIDED CRACKING CATALYST PER BARREL OF RESIDUAL OIL, PASSING THE MIXTURE THROUGH A CONVERSION ZONE AT 700 TO 900* F. AND AT A PRESSURE BETWEEN 500 TO 3000 P.S.I.G. WHICH IS SUFFICIENT TO MAINTAIN A MAJOR PORTION OF THE RESIDUAL OIL IN LIQUID PHASE, KEEPING THE MIXTURE UNDER THE SAID REACTION CONDITIONS FOR A RESIDENCE TIME BETWEEN ABOUT 2 TO 60 MINUTES TO PRODUCE A CONVERSION CORRESPONDING TO NOT MORE THAN 5 WEIGHT PER CENT OF DRY GAS FORMATION BASED ON RESIDUAL FEED AND UNTIL THE CATALYST IS JUST SUBSTANTIALLY COMPLETELY
References Cited (Backward Citations)
US2419427A
Cited
US2156591A
Cited
US2315192A
Cited
US2378531A
Cited
US2388055A
Cited
US2432744A
Cited
US2571342A
Cited
US2485315A
Cited
US2517900A
Cited
US2598058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |