US3718576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline production
Assignee: Chevron USA Inc
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Filing: 1970-07-01
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Granted: 1973-02-27
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Expires: 1990-07-01
Abstract
Abstract A process for producing gasoline from a hexane-rich hydrocarbon feed which comprises disproportionating the hexane-rich feed to obtain at least C5 hydrocarbons and C7+ hydrocarbons, and catalytically reforming the C7+ hydrocarbons to obtain reformate. Preferably, the normal pentane hydrocarbons obtained from disproportionating the hexane are fed to a C5 isomerization process to obtain isopentane. Preferably, a common fractionation zone is used for the disproportionation, catalytic reforming and C5 isomerization processes.
Inventors
- 👤 T Hughes
- 👤 R Sieg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:07
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G59/00; C10G59/02; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
34 words
A process in accordance with claim 1 wherein a normal pentane rich hydrocarbon stream is separated from the C5 hydrocarbons from disproportionation and the normal pentane rich hydrocarbon stream is isomerized to obtain iC5.
Claim 2
Dependent Claim
36 words
A process in accordance with claim 1 wherein the hexane disproportionation is carried out by contacting the hexane with a catalytic mass having catAlytic activity for paraffin dehydrogenation as well as catalytic activity for olefin disproportionation.
Claim 3
Dependent Claim
24 words
A process in accordance with claim 3 wherein the catalytic mass comprises platinum on alumina and a Group VIB metal on a refractory support.
Claim 4
Dependent Claim
31 words
A process in accordance with claim 4 wherein the disproportionation reaction is carried out at a temperature below 850*F. and in the presence of no more than 5 weight percent olefins.
Claim 5
Dependent Claim
49 words
A process in accordance with claim 1 wherein at least a portion of the reformate is separated by solvent extraction into an aromatics-rich stream and a raffinate stream rich in paraffins, and at least a portion of the raffinate is disproportionated to obtain C7+ hydrocarbons which are catalytically reformed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |