US3974062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of full range crude oils with low molecular weight carbon-hydrogen fragment contributors over zeolite catalysts
Assignee: Mobil Oil AS
•
Filing: 1974-10-17
•
Granted: 1976-08-10
•
Expires: 1994-10-17
Abstract
Abstract A refinery process is described for converting desalted full range crude oils and syncrudes derived from coal, shale and tar sands. The process involves mixing and reacting the full range heavy oil feed with a low molecular weight carbon-hydrogen fragment contributor such as methanol or C2-C5 olefins in the presence of a fluid zeolite cracking catalyst comprising mordenite.
Inventors
- 👤 Hartley Owen
- 👤 Edward J. Rosinski
- 👤 Paul B. Venuto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
A method for converting a full boiling range oil charge selected from the group consisting of crude oil and syncrudes derived from coal, shale and tar sands which comprises, mixing the oil charge with at least 5 weight percent on feed of a low molecular weight carbon-hydrogen fragment contributor selected from the group consisting of methanol alone or in admixture with C 2 -C 5 olefins, passing the mixture thus formed in contact with a crystalline zeolite cracking catalyst under conversion conditions comprising a temperature within the range of 800° to 1400°F. and an oil charge residence time within the range of 0.5 to 12 seconds, and recovering the products of said cracking operation separate from the catalyst employed therein.
Claim 2
Independent Claim
120 words
A method for converting a full boiling range oil charge selected from the group consisting of crude oil and syncrudes derived from coal, shale and tar sands which comprises, mixing the oil charge with at least 5 weight percent on feed of a low molecular weight carbon-hydrogen fragment contributor selected from the group consisting of methanol alone or in admixture with C 2 -C 5 olefins, passing the mixture thus formed in contact with a crystalline zeolite cracking catalyst under conversion conditions comprising a temperature within the range of 800° to 1400°F. and an oil charge residence time within the range of 0.5 to 12 seconds, and recovering the products of said cracking operation separate from the catalyst employed therein.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein from about 100 to 200 volume percent of methanol per 100 volume percent of oil charge is employed.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the crystalline zeolite comprises a faujasite crystalline zeolite.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein the crystalline zeolite comprises a mordenite crystalline zeolite.
Claim 6
Dependent Claim
22 words
The method of claim 1 wherein a large pore crystalline zeolite cracking catalyst is employed in combination with a ZSM-5 crystalline zeolite.
Claim 7
Dependent Claim
54 words
The method of claim 1 wherein the oil charge comprises a desalted whole crude admixed with from about 5 to about 200 weight percent of C 5 and lighter olefins which is thereafter passed in contact with a mordenite crystalline zeolite cracking catalyst at a temperature within the range of 950° to about 1050°F.
Claim 8
Dependent Claim
36 words
The method of claim 1 wherein a heavy naphtha product of the cracking operation is recovered and recracked at an elevated temperature in the presence of the carbon-hydrogen fragment contributor to form a higher octane product.
Claim 9
Dependent Claim
35 words
The method of claim 1 wherein a heavy cycle oil and a heavy fuel oil product of the cracking operation is recovered and recracked with the full boiling range oil charge to the cracking operation.
Claim 10
Dependent Claim
20 words
The method of claim 1 wherein the full boiling range feed boils in the range of -30°F. to about 1300°F.
Claim 11
Dependent Claim
39 words
The method of claim 7 wherein the cracking of the full boiling range oil charge and the recycled heavy naphtha product of cracking takes place in separate riser reactors relying upon the same catalyst source and product separation zones.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein the crystalline zeolite cracking catalyst comprises a mixture of faujasite and mordenite crystalline zeolites.
Claim 13
Dependent Claim
21 words
The method of claim 11 wherein the mordenite crystalline zeolite is used in a major proportion to the faujasite zeolite component.
Claim 14
Dependent Claim
15 words
The method of claim 4 wherein the mordenite component is a dealuminized mordenite crystalline zeolite.
Claim 15
Dependent Claim
15 words
The method of claim 11 wherein the mordenite component is a dealuminized mordenite crystalline zeolite.
References Cited (Backward Citations)
US2211944A
Cited
US2456584A
Cited
US3533936A
Cited
US3506731A
Cited
US3728408A
Cited
US3617496A
Cited
US3758403A
Cited
US3743593A
Cited
US3748251A
Cited
US3760024A
Cited
US3849291A
Cited
US3756942A
Cited
US3830724A
Cited
US3856659A
Cited
US3894106A
Cited
US3894107A
Cited
US3894932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |