US4305808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrocracking
Assignee: Mobil Oil AS
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Filing: 1980-04-14
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Granted: 1981-12-15
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Expires: 2000-04-14
Abstract
Abstract Catalytic hydrocracking of polynuclear aromatic containing feedstocks is conducted over catalysts comprising zeolites in intimate contact with a nickel-tungsten hydrogenation component. Said zeolites are characterized by a silica to alumina mole ratio of at least 12, a constraint index within the approximate range of 1 to 12 and an alpha value of between about 25 and 200.
Inventors
- 👤 Emmerson Bowes
- 👤 Allan W. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:16
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/20; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/888; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J29/48; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A process for hydrocracking a polynuclear aromatic containing feedstock having a %C A within the range of from about 30% to about 100% which comprises contacting said feedstock under conversion conditions including a temperature of between about 400° F. and 950° F., a pressure of between about 100 psig and 2000 psig, a LHSV of between about 0.1 and 10, and a molar ratio of hydrogen to hydrocarbon charge of between about 2 and 80 with a catalyst comprising one or more members of a class of zeolites characterized by a silica to alumina mole ratio of at least 12, a constraint index in the approximate range of 1 to 12 and an alpha value of between about 25 and 200 and wherein said zeolite is in intimate contact with a nickel-tungsten hydrogenation component.
Claim 2
Dependent Claim
134 words
A process for hydrocracking a polynuclear aromatic containing feedstock having a %C A within the range of from about 30% to about 100% which comprises contacting said feedstock under conversion conditions including a temperature of between about 400° F. and 950° F., a pressure of between about 100 psig and 2000 psig, a LHSV of between about 0.1 and 10, and a molar ratio of hydrogen to hydrocarbon charge of between about 2 and 80 with a catalyst comprising one or more members of a class of zeolites characterized by a silica to alumina mole ratio of at least 12, a constraint index in the approximate range of 1 to 12 and an alpha value of between about 25 and 200 and wherein said zeolite is in intimate contact with a nickel-tungsten hydrogenation component.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein said zeolite is ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, or ZSM-38.
Claim 4
Dependent Claim
10 words
The process of claim 2 wherein said zeolite is ZSM-5.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein said zeolite has a crystallite size of less than about 5 microns.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said feedstock is FCC light cycle oil.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein said alpha value is between about 50 and 125.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein said intimate contact is attained by impregnation.
Claim 9
Dependent Claim
53 words
The process of claim 1 wherein said conversion conditions include a temperature of between about 500° F. and 800° F., a pressure of between about 400 psig and 1500 psig, a LHSV of between about 0.1 and 10, and a molar ratio of hydrogen to hydrocarbon charge of between about 5 and 50.
Claim 10
Dependent Claim
35 words
The process of claim 1 wherein said hydrogenation component consists of about 0.7 to about 7 wt. % nickel and about 2.1 to about 21 wt. % tungsten expressed as metal based on said catalyst.
Claim 11
Dependent Claim
14 words
The process of claim 1 wherein said zeolite is contained in an alumina matrix.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |