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US4126644A
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Method of upgrading a fischer-tropsch light oil
Assignee: Mobil Oil AS
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Filing: 1976-10-14
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Granted: 1978-11-21
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Expires: 1996-10-14
Abstract
Abstract The product of Fischer-Tropsch synthesis is separated to recover a C 5 -400° F liquid fraction which is thereafter upgraded to a higher octane gasoline fraction and a low-pour, high diesel index fuel oil by a "dense phase" process using HZSM-5 and related zeolites as catalysts.
Inventors
- 👤 Philip D. Caesar
- 👤 William E. Garwood
- 👤 Alan W. Peters
- 👤 John J. Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:47
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/06; C10G35/00; C10G35/04; C10G35/06; C10G35/095; C10L; C10L1/00; C10L1/04; C10L1/06; Y; Y10; Y10S; Y10S208/00; Y10S208/95
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
In a method for upgrading a product of Fischer-Torpsch synthesis boiling within the range of C 5 to 400° F. to gasoline and fuel oil product by contacting a crystalline aluminosilicate catalyst characterized by a pore dimension greater than 5 Angstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12, the improvement which comprises, (a) effecting contact of said Fischer-Tropsch synthesis product boiling within the range of C 5 to 400° F. maintained at least 90 percent in liquid phase with said crystalline aluminosilicate catalyst in the absence of hydrogen at a pressure within the range of 200 to 1000 psig, maintaining the temperature during said contact within the range of 400° to 560° F. and a liquid hourly space velocity within the range of 0.1 to 2, and (b) recovering a C 5 plus gasoline product of improved octane and a fuel oil product from said liquid phase upgrading operation.
Claim 2
Dependent Claim
162 words
In a method for upgrading a product of Fischer-Torpsch synthesis boiling within the range of C 5 to 400° F. to gasoline and fuel oil product by contacting a crystalline aluminosilicate catalyst characterized by a pore dimension greater than 5 Angstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12, the improvement which comprises, (a) effecting contact of said Fischer-Tropsch synthesis product boiling within the range of C 5 to 400° F. maintained at least 90 percent in liquid phase with said crystalline aluminosilicate catalyst in the absence of hydrogen at a pressure within the range of 200 to 1000 psig, maintaining the temperature during said contact within the range of 400° to 560° F. and a liquid hourly space velocity within the range of 0.1 to 2, and (b) recovering a C 5 plus gasoline product of improved octane and a fuel oil product from said liquid phase upgrading operation.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the temperature is at least 450° F. and the space velocity is below 1.0.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the crystalline aluminosilicate is exchanged with one of hydrogen ions or ammonium ions.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein the crystalline aluminosilicate is selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-35 and ZSM-38.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein the gasoline product is hydrotreated in the presence of a cobalt-molybdenum-alumina catalyst to produce a deoxygenated gasoline product.
Claim 7
Dependent Claim
18 words
The method of claim 1 wherein the zeolite is ZSM-5 and is composited with an inorganic oxide binder.
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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |