US4032432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversions of hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1975-08-28
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Granted: 1977-06-28
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Expires: 1995-08-28
Abstract
Abstract A combination operation is described comprising gas oil cracking in the presence of a large and smaller pore size crystalline zeolite dual component cracking catalyst in which combination C 6 minus products are separated and catalytically upgraded under selected conditions providing cyclization and/or carbon chain growth as by oligmerization and polymerization. Conversion of C 6 and lower boiling hydrocarbons is particularly accomplished with the smaller pore crystalline zeolite of the dual component catalyst.
Inventors
- 👤 Hartley Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
224 words
A method for converting hydrocarbons in the presence of a heterogenous catalyst mix comprising a relatively large pore faujasite crystalline zeolite mixed with a smaller pore crystalline zeolite selected from the group consisting of erionite and mordenite crystalline zeolites which comprises, passing a relatively high boiling hydrocarbon feed of at least gas oil boiling range in admixture with said heterogenous catalyst mix upwardly through a first hydrocarbon conversion zone at an elevated cracking temperature within the range of 900° to 1200° F. and a hydrocarbon residence time in the reaction zone up to 15 seconds but sufficient to form hydrocarbon conversion products thereof, separating said catalyst mix from said hydrocarbon conversion products, separating said conversion products into a C 6 and lower boiling fraction, a gasoline fraction and a higher boiling fraction including heavy cycle oil, recovering the separated gasoline and higher boiling fractions, contacting the separated C 6 and lower boiling components with a portion of said heterogenous catalyst mix separated from hydrocarbon conversion products of said first conversion zone at a temperature within the range 550° to 900° F. at a space velocity in the range of 0.25 to 13 promoting at least one of olefin oligmerization, polymerization and olefin cyclization, and separately recovering products of said C 6 and lower boiling products upgrading separately from said high boiling hydrocarbon conversion operation.
Claim 2
Independent Claim
224 words
A method for converting hydrocarbons in the presence of a heterogenous catalyst mix comprising a relatively large pore faujasite crystalline zeolite mixed with a smaller pore crystalline zeolite selected from the group consisting of erionite and mordenite crystalline zeolites which comprises, passing a relatively high boiling hydrocarbon feed of at least gas oil boiling range in admixture with said heterogenous catalyst mix upwardly through a first hydrocarbon conversion zone at an elevated cracking temperature within the range of 900° to 1200° F. and a hydrocarbon residence time in the reaction zone up to 15 seconds but sufficient to form hydrocarbon conversion products thereof, separating said catalyst mix from said hydrocarbon conversion products, separating said conversion products into a C 6 and lower boiling fraction, a gasoline fraction and a higher boiling fraction including heavy cycle oil, recovering the separated gasoline and higher boiling fractions, contacting the separated C 6 and lower boiling components with a portion of said heterogenous catalyst mix separated from hydrocarbon conversion products of said first conversion zone at a temperature within the range 550° to 900° F. at a space velocity in the range of 0.25 to 13 promoting at least one of olefin oligmerization, polymerization and olefin cyclization, and separately recovering products of said C 6 and lower boiling products upgrading separately from said high boiling hydrocarbon conversion operation.
Claim 3
Dependent Claim
68 words
The method of claim 1 wherein the high boiling feed is a residual oil and the C 6 minus product is a product of residual oil conversion which is converted in an adjacent upflowing catalyst conversion zone and catalyst separated from the products of the residual oil conversion is cascaded to the inlet of the adjacent upflowing catalyst conversion zone to upgrade the separated C 6 minus products.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein said heterogenous catalyst mixture is regenerated and employed in each of said conversion operations.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein a gasoline product of said gas oil conversion is mixed with upgraded products of the C 6 and lower boiling components conversion operation.
Claim 6
Dependent Claim
41 words
The method of claim 1 wherein the product of the high boiling feed conversion operation is separated to recover kerosene, light cycle oil and heavy cycle oil and the heavy cycle oil is recycled to the high boiling feed conversion operation.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |