US3899411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Octane cracking
Assignee: Mobil Oil AS
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Filing: 1974-01-08
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Granted: 1975-08-12
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Expires: 1994-01-08
Abstract
Abstract This disclosure relates to the method of improving the activity of shape selective hydrocracking processes by the particular combination of reforming catalyst and shape selective hydrocracking catalyst. The relationship of operating conditions is particularly concerned with the disclosure of FIG. 1 wherein it is shown that the activity for the shape selective hydrocracking process can be significantly improved through the use of an admixture of a shape selective cracking catalyst having a pore diameter of about 4.5 to 6.0 A., and reforming catalyst in a relative concentration of about 20 to 50 weight percent reforming catalyst. In a preferred embodiment, the minimum research octane increase of the naphtha or reformate across a reactor containing such a catalyst mixture is about 6 to about 10 clear octane numbers.
Inventors
- 👤 John C Bonacci
- 👤 William P Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
IN THE METHOD OF UPGRADING THE OCTANE NUMBER OF A NAPHTHA BOILING RANGE HYDROCARBON FRACTION BY THE SEQUNCE OF REFORMING USING A PLATINUM TYPE REFORMING CATALYST FOLLOWED BY SHAPE SELECTIVE CONVERSION OF THE REFORMATE USING A SHAPE SELECTIVE CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST HAVING A PORE SIZE OF 4.5 TO 6.0 A. SUCH AS TO ADMIT ONLY MOLECULES HAVING AN EFFECTIVE DIAMETER UP TO THAT OF NORMAL PARAFFINS, THE IMPROVEMENT WHICH COMPRISES UTILIZING IN SAID SHAPE SELECTIVE CONVERSION STEP A CATALYST WHICH IS A MIXTURE OF SAID SHAPE SELECTIVE ZEOLITE AND ABOUT 20 TO 50 WEIGHT PERCENT OF A PLATINUM TYPE REFORMING CATALYST.
Claim 2
Dependent Claim
102 words
IN THE METHOD OF UPGRADING THE OCTANE NUMBER OF A NAPHTHA BOILING RANGE HYDROCARBON FRACTION BY THE SEQUNCE OF REFORMING USING A PLATINUM TYPE REFORMING CATALYST FOLLOWED BY SHAPE SELECTIVE CONVERSION OF THE REFORMATE USING A SHAPE SELECTIVE CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST HAVING A PORE SIZE OF 4.5 TO 6.0 A. SUCH AS TO ADMIT ONLY MOLECULES HAVING AN EFFECTIVE DIAMETER UP TO THAT OF NORMAL PARAFFINS, THE IMPROVEMENT WHICH COMPRISES UTILIZING IN SAID SHAPE SELECTIVE CONVERSION STEP A CATALYST WHICH IS A MIXTURE OF SAID SHAPE SELECTIVE ZEOLITE AND ABOUT 20 TO 50 WEIGHT PERCENT OF A PLATINUM TYPE REFORMING CATALYST.
Claim 3
Dependent Claim
27 words
The method as claimed in claim 1 wherein said shape-selective catalyst is a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 2.
Claim 4
Dependent Claim
14 words
The method as claimed in claim 1 wherein said shape selective catalyst comprises erionite.
Claim 5
Dependent Claim
39 words
The improved method claimed in claim 3 including carrying out said reforming at about 150 to 600 psig, 800 to 1020*F and 0.1 to 20 LHSV; and directly subjecting the product of said reforming to said shape selective conversion.
Claim 6
Dependent Claim
20 words
The method as claimed in claim 1 wherein said platinum type reforming catalyst is predominantly an eta alumina based catalyst.
Claim 7
Dependent Claim
39 words
The improved method claimed in claim 1 wherein said reforming catalysts consist essentially of at least about 95 weight percent alumina, about 0.1 to 5 weight percent chloride and an effective amount up to about 1 weight percent platinum.
Claim 8
Dependent Claim
34 words
The method as claimed in claim 1 wherein said naphtha hydrocarbon fraction is passed over said catalyst mixture in said shape selective conversion step under reforming conditions at a pressure below about 600 psig.
References Cited (Backward Citations)
US3114696A
Cited
US3267023A
Cited
US3301917A
Cited
US3546102A
Cited
US3395094A
Cited
US3617492A
Cited
US3679575A
Cited
US3664949A
Cited
US3663426A
Cited
US3753891A
Cited
US3707460A
Cited
US3719586A
Cited
US3806443A
Cited
US3849290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |