US4416765A
Expired / Lapsed
US
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Catalytic cracking
Assignee: Mobil Oil AS
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Filing: 1982-08-16
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Granted: 1983-11-22
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Expires: 2002-08-16
Abstract
Abstract Octane and overall product quality improvement in catalytic cracking processes utilizing an essentially entirely amorphous cracking catalyst can be attained by using instead a catalyst comprising a minor amount, e.g. from about 0.01 to about 25 weight percent, of a class of crystalline zeolites characterized by a silica to alumina mole ratio greater than about 12 and a constraint index of about 1 to 12. The crystalline zeolites may be added to the conventional amorphous cracking catalyst in the cracking process by way of adding a separate additive composition in an amount which provides the zeolite component of the additive composition in said minor amount of the total catalyst in the cracking process.
Inventors
- 👤 Arthur W. Chester
- 👤 William E. Cormier, Jr.
- 👤 William A. Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:26
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/04; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/80; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/36; B01J2229/42; B01J29/08; B01J29/084; B01J29/65; B01J29/70; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
137 words
In a catalytic cracking process designed for cracking a petroleum fraction over an essentially entirely amorphous cracking catalyst comprising contacting said fraction with said amorphous cracking catalyst at a temperature of from about 400° F. to about 1300° F. to provide a product exhibiting a certain octane number, the improvement of contacting said fraction in said process at a temperature of from about 400° F. to about 1300° F. with a catalyst comprising a major amount of amorphous cracking component and a minor amount of crystalline zeolite component characterized by a Constraint Index of from about 1 to about 12 and a silica to alumina mole ratio of greater than about 12 whereby the product of said process exhibits an increased octane number when compared to the same process conducted with an essentially entirely amorphous cracking catalyst.
Claim 2
Dependent Claim
137 words
In a catalytic cracking process designed for cracking a petroleum fraction over an essentially entirely amorphous cracking catalyst comprising contacting said fraction with said amorphous cracking catalyst at a temperature of from about 400° F. to about 1300° F. to provide a product exhibiting a certain octane number, the improvement of contacting said fraction in said process at a temperature of from about 400° F. to about 1300° F. with a catalyst comprising a major amount of amorphous cracking component and a minor amount of crystalline zeolite component characterized by a Constraint Index of from about 1 to about 12 and a silica to alumina mole ratio of greater than about 12 whereby the product of said process exhibits an increased octane number when compared to the same process conducted with an essentially entirely amorphous cracking catalyst.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said crystalline zeolite component is present at from about 0.01 weight percent to about 25 weight percent of the catalyst.
Claim 4
Dependent Claim
26 words
The process of claim 2 wherein said crystalline zeolite component is present at from about 0.01 weight percent to about 10 weight percent of the catalyst.
Claim 5
Dependent Claim
30 words
The process of claim 1 wherein said crystalline zeolite component is provided by adding a separate additive composition comprising said zeolite to said amorphous cracking component in the cracking process.
Claim 6
Dependent Claim
31 words
The process of claim 2 wherein said crystalline zeolite component is provided by adding a separate additive composition comprising said zeolite component to said amorphous cracking component in the cracking process.
Claim 7
Dependent Claim
31 words
The process of claim 3 wherein said crystalline zeolite component is provided by adding a separate additive composition comprising said zeolite component to said amorphous cracking component in the cracking process.
Claim 8
Dependent Claim
31 words
The process of claim 1 wherein said crystalline zeolite component is at least one member selected from the group consistng of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 9
Dependent Claim
31 words
The process of claim 2 wherein said crystalline zeolite component is at least one member selected from the group consisting of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 10
Dependent Claim
31 words
The process of claim 3 wherein said crystalline zeolite component is at least one member selected from the group consisting of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 11
Dependent Claim
31 words
The process of claim 4 wherein said crystalline zeolite component is at least one member selected from the group consisting of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 12
Dependent Claim
31 words
The process of claim 5 wherein said crystalline zeolite component is at least one member selected from the group consisting of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 13
Dependent Claim
31 words
The process of claim 6 wherein said crystalline zeolite component is at least one member selected from the group consisting of ZSM-5, ZSM-5/ZSM-11 intermediate, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 14
Dependent Claim
11 words
The process of claim 7 wherein said zeolite component is ZSM-5.
Claim 15
Dependent Claim
11 words
The process of claim 8 wherein said zeolite component is ZSM-5.
Claim 16
Dependent Claim
11 words
The process of claim 9 wherein said zeolite component is ZSM-5.
Claim 17
Dependent Claim
11 words
The process of claim 10 wherein said zeolite component is ZSM-5.
Claim 18
Dependent Claim
11 words
The process of claim 11 wherein said zeolite component is ZSM-5.
Claim 19
Dependent Claim
11 words
The process of claim 12 wherein said zeolite component is ZSM-5.
Claim 20
Dependent Claim
37 words
The process of claim 1 wherein said amorphous cracking component is a member selected from the group consisting of clay, silica-alumina, silica-magnesia, silica-zirconia, silica-thoria, silica-beryllia, silica-titania, silica-alumina-thoria, silica-alumina-zirconia, silica-alumina-magnesia, silica-magnesia-zirconia, a clay silica mixture and combinations thereof.
Claim 21
Dependent Claim
36 words
The process of claim 4 wherein said amorphous cracking component is a member selected from the group consisting of clay, silica-alumina, silica-magnesia, silica-zirconia, silica-thoria, silica-beryllia, silica-titania, silica-alumina-thoria, silica-alumina-zirconia, silica-alumina-magnesia, silica-magnesia-zirconia, a clay/silica mixture and combinations thereof.
Claim 22
Dependent Claim
17 words
The process of claim 1 wherein the catalytic cracking takes place in a fluid catalytic cracking process.
Claim 23
Dependent Claim
17 words
The process of claim 4 wherein the catalytic cracking takes place in a fluid catalytic cracking process.
Claim 24
Dependent Claim
22 words
The process of claim 4 wherein the addition of said separate additive composition occurs during an on-stream operation of the cracking process.
Claim 25
Dependent Claim
13 words
The process of claim 4 wherein the separate additive composition is intermittently added.
Claim 26
Dependent Claim
51 words
The process of claim 1 wherein a metal selected from the group consisting of platinum, palladium, iridium, osmium, rhodium, ruthenium and rhenium is added to the catalyst in an amount of from about 0.01 ppm to about 100 ppm, based on total catalyst inventory, in order to enhance carbon monoxide conversion.
Claim 27
Dependent Claim
54 words
The process of claim 4 wherein a metal selected from the groups consisting of platinum, palladium, iridium, osmium, rhodium, ruthenium and rhenium is added to the separate additive composition in an amount of from about 1.0 ppm to about 1000 ppm, based on total separate additive composition, in order to engance carbon monoxide conversion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |