Patent US2902429A successfully refreshed from Google Patents.
US2902429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demetallization of hydrocarbon fractions
Assignee: California Research LLC
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Filing: 1955-06-17
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Granted: 1959-09-01
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Expires: 1975-06-17
Abstract
No abstract record available.
Inventors
- 👤 John W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:45
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/847; B01J23/8472; B01J23/85; B01J23/88; B01J23/882; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G69/00; C10G69/02; C10G69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
7. IN A CATALYTIC CRACKING PROCESS WHEREIN A HYDROCARBON FEED IS CONTACTED IN A CATALYTIC CRACKING ZONE WITH A CRACKING CATALYST UNDER CRACKING CONDITIONS, THE METHOD OF TREATING SAID FEED PRIOR TO CRACKING TO REMOVE METALCONTAINING COMPOUNDS THEREFROM, WHICH COMPRISES: SEPARATING SAID FEED INTO TWO FRACTIONS, ONE BEING HIGHER BOILING AND RICHER IN SAID COMPOUNDS THAN THE OTHER; REMOVING METAL-CONTAINING COMPOUNDS THAN THE OTHER; BOILING FRACTION BY PASSING SAID HIGHER BOILING FRACTION INTO, CONTRACT WITH A CATALYST IN THE PRESENCE OF FROM ABOUT 1000-10,000 S.C.F./B. OF HYDROGEN AT A TEMPERATURE OF FROM ABOUT 650*F. TO 900*F. AND SUPERATMOSPHERIC PRESSURE, SAID CATALYST COMPRISING A SUPPORT HAVING A SURFACE AREA OF NOT MORE THAN 15M2/GM. AND A SULFUR RESISTANT HYDROGENATING-DEHYDROGENATINGT COMPONENT DISPOSED ON SAID SUPPORT IN AN AMOUNT FROM 0.25-0.75 PERCENT BY WEIGHT OF THE TOTAL CATALYST; AND PASSING THE FRACTION SO DEMETALLIZED AND THE OTHER FRACTION TO SAID CRACKING ZONE.
Claim 2
Dependent Claim
149 words
7. IN A CATALYTIC CRACKING PROCESS WHEREIN A HYDROCARBON FEED IS CONTACTED IN A CATALYTIC CRACKING ZONE WITH A CRACKING CATALYST UNDER CRACKING CONDITIONS, THE METHOD OF TREATING SAID FEED PRIOR TO CRACKING TO REMOVE METALCONTAINING COMPOUNDS THEREFROM, WHICH COMPRISES: SEPARATING SAID FEED INTO TWO FRACTIONS, ONE BEING HIGHER BOILING AND RICHER IN SAID COMPOUNDS THAN THE OTHER; REMOVING METAL-CONTAINING COMPOUNDS THAN THE OTHER; BOILING FRACTION BY PASSING SAID HIGHER BOILING FRACTION INTO, CONTRACT WITH A CATALYST IN THE PRESENCE OF FROM ABOUT 1000-10,000 S.C.F./B. OF HYDROGEN AT A TEMPERATURE OF FROM ABOUT 650*F. TO 900*F. AND SUPERATMOSPHERIC PRESSURE, SAID CATALYST COMPRISING A SUPPORT HAVING A SURFACE AREA OF NOT MORE THAN 15M2/GM. AND A SULFUR RESISTANT HYDROGENATING-DEHYDROGENATINGT COMPONENT DISPOSED ON SAID SUPPORT IN AN AMOUNT FROM 0.25-0.75 PERCENT BY WEIGHT OF THE TOTAL CATALYST; AND PASSING THE FRACTION SO DEMETALLIZED AND THE OTHER FRACTION TO SAID CRACKING ZONE.
References 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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |