Patent US4260841A successfully refreshed from Google Patents.
US4260841A
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Conversion of oxygenated products of Fischer-Tropsch synthesis
Assignee: Mobil Oil AS
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Filing: 1979-09-04
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Granted: 1981-04-07
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Expires: 1999-09-04
Abstract
Abstract Water-soluble oxygenates of Fischer-Tropsch synthesis separated from water and acids are sequentially upgraded by a dehydration catalyst and a special zeolite catalyst to produce gasoline, LPG and light fuel oil.
Inventors
- 👤 Robert E. Holland
- 👤 Samuel A. Tabak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:58
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C10; C10G; C10G3/00; C10G3/42; C10G3/44; C10G3/48; C10G3/49; C07C2521/00; C07C2521/02; C07C2521/04; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C10G2300/00; C10G2300/10; C10G2300/1022; C10G2300/40; C10G2300/4081; C10G2400/00; C10G2400/02; C10G2400/28; C10G2400/30; Y; Y02; Y02P; Y02P30/00; Y02P30/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
A process for upgrading a mixture of C 2 plus water soluble oxygenates comprising primarily a mixture of C 5 and lower boiling alcohols, aldehydes, ketones and water which comprises, distilling the C 2 plus water soluble oxygenates to remove water and acids from a mixture of C 5 and lower boiling alcohols, aldehydes and ketones, dehydrating the mixture of C 5 and lower boiling alcohols, aldehydes and ketones under conditions to achieve within the range of 25 to 100% conversion thereof to a dehydrated product, separating a dehydrated product from water and unconverted material, recycling the separated water and unconverted material to the distillation step, passing the dehydrated product in contact with a special zeolite catalyst characterized by a pore opening of at least 5 Angstroms, a silica-to-alumina ratio of at least 12 and a constraint index within the range of 1 to 12, said contact between said dehydrated product and said zeolite catalyst being effected at a temperature within the range of 400° to 900° F. and a pressure sufficient to produce a product comprising high octane gasoline boiling components and aromatics.
Claim 2
Dependent Claim
184 words
A process for upgrading a mixture of C 2 plus water soluble oxygenates comprising primarily a mixture of C 5 and lower boiling alcohols, aldehydes, ketones and water which comprises, distilling the C 2 plus water soluble oxygenates to remove water and acids from a mixture of C 5 and lower boiling alcohols, aldehydes and ketones, dehydrating the mixture of C 5 and lower boiling alcohols, aldehydes and ketones under conditions to achieve within the range of 25 to 100% conversion thereof to a dehydrated product, separating a dehydrated product from water and unconverted material, recycling the separated water and unconverted material to the distillation step, passing the dehydrated product in contact with a special zeolite catalyst characterized by a pore opening of at least 5 Angstroms, a silica-to-alumina ratio of at least 12 and a constraint index within the range of 1 to 12, said contact between said dehydrated product and said zeolite catalyst being effected at a temperature within the range of 400° to 900° F. and a pressure sufficient to produce a product comprising high octane gasoline boiling components and aromatics.
Claim 3
Dependent Claim
42 words
The process of claim 1 wherein the product of said zeolite catalyst operation is separated to provide a C 4 and lower boiling product from a higher boiling product and separated lower boiling product is recycled to the zeolite catalyst conversion operation.
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein separated lower boiling product is used to provide LPG and fuel for the process.
Claim 5
Independent Claim
113 words
A method for upgrading the water soluble oxygenates of a Fischer-Tropsch syngas conversion operation which comprises, passing water soluble oxygenates comprising alcohols, aldehydes and ketones separated from a water phase by distillation in contact with a dehydration catalyst under conditions to obtain a dehydrated product, passing the dehydrated product in contact with a zeolite catalyst providing a pore opening of at least 5 Angstroms, a silica-alumina ratio of at least 12 and a constraint index within the range of 1 to 12 and maintaining the temperature and pressure conditions selective for the production of primarily gasoline boiling range component of high octane alone or in combination with producing a middle distillate boiling material.
Claim 6
Independent Claim
113 words
A method for upgrading the water soluble oxygenates of a Fischer-Tropsch syngas conversion operation which comprises, passing water soluble oxygenates comprising alcohols, aldehydes and ketones separated from a water phase by distillation in contact with a dehydration catalyst under conditions to obtain a dehydrated product, passing the dehydrated product in contact with a zeolite catalyst providing a pore opening of at least 5 Angstroms, a silica-alumina ratio of at least 12 and a constraint index within the range of 1 to 12 and maintaining the temperature and pressure conditions selective for the production of primarily gasoline boiling range component of high octane alone or in combination with producing a middle distillate boiling material.
Claim 7
Dependent Claim
18 words
The method of claim 4 wherein the dehydration catalyst is gamma alumina and the zeolite catalyst is ZSM-5.
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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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |