US3883418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead free motor fuel production
Assignee: Phillips Petroleum Co
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Filing: 1973-01-02
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Granted: 1975-05-13
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Expires: 1993-01-02
Abstract
Abstract A two-stage reforming process for the production of high-octane unleaded motor fuel from low-octane naphthas. The paraffinic raffinate from an intermediate extractive distillation step is reformed over a steam-active catalyst. Several product streams produced during the various process steps are combined to produce a high-octane motor fuel.
Inventors
- 👤 Lewis E Drehman
- 👤 Jr Floyd E Farha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; C10G; C10G59/00; C10G59/02; C10G61/00; C10G61/02; C10G61/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
228 words
A METHOD FOR UPGRADING A NAPHTHA FEED STOCK COMPRISING: CONTACTING SAID NAPHTHA IN A FIRST REFORMING ZONE WITH A REFORMING CATALYST UNDER REFROMING CONDITIONS CONDUCIVE TO NAPHTHENE DEHYDROGENATION WITH A MINIMUM OF PARAFFIN CONVERSION AND SEPARATING FROM SAID FIRST REFORMING ZONE A FIRST LIQUID REFORMATE STREAM COMPRISING AROMATICS, UNREACTED PARAFFINS AND UNREACTED NAPHTHENES; SEPARATING SAID LIQUID REFORMATE STREAM FROM SAID FIRST REFORMING ZONE INTO A FIRST FRACTION BOILING BELOW ABOUT 110*F, A SECOND FRACTION BOILING IN THE RANGE OF ABOUT 120* TO ABOUT 260*F, AND A THIRD FRACTION BOILING ABOVE ABOUT 260*F; SEPARATING SAID SECOND FRACTION BOILING IN THE RANGE OF ABOUT 120* TO ABOUT 260*F INTO A PARAFFIN-RICH RAFFINATE AND AN AROMATICS-RICH EXTRACT; CONTACTING SAID PARAFFIN-RICH RAFFINATE IN A SECOND REFORMING ZONE IN THE PRESENCE OF STEAM UNDER REFORMING CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF AT LEAST ONE GROUP VIII METAL OR METAL COMPOUND CAPABLE OF REDUCTION, AT LEAST ONE TIN GROUP METAL OR METAL COMPOUND, AND AT LEAST ONE GROUP 11 METAL ALUMINATE OR ALUMINATE SPINEL SUPPORT MATERIAL; AND SEPARATING FROM SAID SECOND REFORMING ZONE A SECOND LIQUID REFORMATE STREAM; AND BLENDING SAID FIRST FRACTION HAVING A BOILING POINT BELOW ABOUT 110*F, SAID THIRD FRACTION BOILING ABOVE ABOUT 260*F, SAID AROMATICS-RICH EXTRACT AND SAID SECOND LIQUID REFORMATE STREAM TO FORM A GASOLINE FRACTION HAVING AN UNLEADED ASTM RESEARCH OCTANE NUMBER OF AT LEAST ABOUT 95.
Claim 2
Independent Claim
228 words
A METHOD FOR UPGRADING A NAPHTHA FEED STOCK COMPRISING: CONTACTING SAID NAPHTHA IN A FIRST REFORMING ZONE WITH A REFORMING CATALYST UNDER REFROMING CONDITIONS CONDUCIVE TO NAPHTHENE DEHYDROGENATION WITH A MINIMUM OF PARAFFIN CONVERSION AND SEPARATING FROM SAID FIRST REFORMING ZONE A FIRST LIQUID REFORMATE STREAM COMPRISING AROMATICS, UNREACTED PARAFFINS AND UNREACTED NAPHTHENES; SEPARATING SAID LIQUID REFORMATE STREAM FROM SAID FIRST REFORMING ZONE INTO A FIRST FRACTION BOILING BELOW ABOUT 110*F, A SECOND FRACTION BOILING IN THE RANGE OF ABOUT 120* TO ABOUT 260*F, AND A THIRD FRACTION BOILING ABOVE ABOUT 260*F; SEPARATING SAID SECOND FRACTION BOILING IN THE RANGE OF ABOUT 120* TO ABOUT 260*F INTO A PARAFFIN-RICH RAFFINATE AND AN AROMATICS-RICH EXTRACT; CONTACTING SAID PARAFFIN-RICH RAFFINATE IN A SECOND REFORMING ZONE IN THE PRESENCE OF STEAM UNDER REFORMING CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF AT LEAST ONE GROUP VIII METAL OR METAL COMPOUND CAPABLE OF REDUCTION, AT LEAST ONE TIN GROUP METAL OR METAL COMPOUND, AND AT LEAST ONE GROUP 11 METAL ALUMINATE OR ALUMINATE SPINEL SUPPORT MATERIAL; AND SEPARATING FROM SAID SECOND REFORMING ZONE A SECOND LIQUID REFORMATE STREAM; AND BLENDING SAID FIRST FRACTION HAVING A BOILING POINT BELOW ABOUT 110*F, SAID THIRD FRACTION BOILING ABOVE ABOUT 260*F, SAID AROMATICS-RICH EXTRACT AND SAID SECOND LIQUID REFORMATE STREAM TO FORM A GASOLINE FRACTION HAVING AN UNLEADED ASTM RESEARCH OCTANE NUMBER OF AT LEAST ABOUT 95.
Claim 3
Dependent Claim
49 words
A process according to claim 1 wherein said third fraction boiling above about 260* F. and said aromatic-rich extract are blended to produce an aromatic-rich blend and said aromatic-rich blend is blended with said first fraction having a boiling point below about 110*F. and said second liquid reformate stream.
Claim 4
Dependent Claim
56 words
A process according to claim 1 wherein said Group VIII metal component of said second reforming catalyst is selected from the group consisting of nickel, platinum, ruthenium, rhodium, palladium, osmium, iridium and mixtures thereof; and said tin group metal component of said catalyst is selected from the group consisting of tin, germanium, lead, and mixtures thereof.
Claim 5
Dependent Claim
16 words
A process according to claim 3 wherein said support material of said catalyst is zinc aluminate.
Claim 6
Dependent Claim
20 words
A process according to claim 4 wherein said Group VIII component is platinum and said tin group component is tin.
Claim 7
Dependent Claim
24 words
A process according to claim 5 wherein said naphtha is a straight-run naphtha having a boiling range of about 200* to about 400* F.
References Cited (Backward Citations)
US2773810A
Cited
US2917449A
Cited
US2908628A
Cited
US3374167A
Cited
US3632525A
Cited
US3641182A
Cited
US3660271A
Cited
US3670044A
Cited
US3632503A
Cited
US3669875A
Cited
US3674706A
Cited
US3748256A
Cited
US3793192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |