US3132090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking process with regulation of the aromatic content of the product
Assignee: Union Oil Company of California
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Filing: 1962-01-23
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Granted: 1964-05-05
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Paul F Helfrey
- 👤 Nicholas L Kay
- 👤 Peralta Bernal
- 👤 Cloyd P Reeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:45
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/10; C10G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A CATALYTIC HYDROCRACKING PROCESS WHEREIN A HYDROCARBON FEEDSTOCK BOILING ABOVE THE GASOLINE RANGE AND CONTAINING AROMATIC HYDROCARBONS IS CONTACTED WITH A GROUP VIII NOBLE METAL-CONTAINING HYDROCRACKING CATALYST IN THE PRESENCE OF ADDED HYDROGENAT A PRESSURE BETWEEN ABOUT 400 AND 2,500 P.S.I.G. AND AT A TEMPERATURE BETWEEN ABOUT 400-750*F. SELECTED TO GIVE A SUBSTANTIAL CONVERSION TO AT LEAST ONE DESIRED PRODUCT SELECTED FROM THE CLASS CONSISTING OF GASOLINE, JET FUEL AND DIESEL FUEL, THE IMPROVED METHOD FOR CONTROLLING AND ALTERNATELY VARYING THE AROMATICITY OF SAID DESIRED PRODUCT WHICH COMPRISES: MAINTAINING ALTERNATELY (A) A RELATIVELY HIGH, CONTINUOUS CONCENTRATION OF HYDROGEN SULFIDE, ABOVE ABOUT 0.01 MILLIMOLE THEREOF PER MOLE OF HYDROGEN IN THE HYDROCRACKING ZONE, TO PRODUCE A RELATIVELY AROMATIC PRODUCT, AND (B) A RELATIVELY LOW CONTINOUS PARTIAL PRESSURE OF HYDROGEN SULFIDE, BELOW ABOUT 0.2 MILLIMOLE THEREOF PER MOLE OF HYDROGEN IN THE HYDROCRACKING ZONE, TO PRODUCE A RELATIVELY NON-AROMATIC PRODUCT.
Claim 2
Dependent Claim
149 words
IN A CATALYTIC HYDROCRACKING PROCESS WHEREIN A HYDROCARBON FEEDSTOCK BOILING ABOVE THE GASOLINE RANGE AND CONTAINING AROMATIC HYDROCARBONS IS CONTACTED WITH A GROUP VIII NOBLE METAL-CONTAINING HYDROCRACKING CATALYST IN THE PRESENCE OF ADDED HYDROGENAT A PRESSURE BETWEEN ABOUT 400 AND 2,500 P.S.I.G. AND AT A TEMPERATURE BETWEEN ABOUT 400-750*F. SELECTED TO GIVE A SUBSTANTIAL CONVERSION TO AT LEAST ONE DESIRED PRODUCT SELECTED FROM THE CLASS CONSISTING OF GASOLINE, JET FUEL AND DIESEL FUEL, THE IMPROVED METHOD FOR CONTROLLING AND ALTERNATELY VARYING THE AROMATICITY OF SAID DESIRED PRODUCT WHICH COMPRISES: MAINTAINING ALTERNATELY (A) A RELATIVELY HIGH, CONTINUOUS CONCENTRATION OF HYDROGEN SULFIDE, ABOVE ABOUT 0.01 MILLIMOLE THEREOF PER MOLE OF HYDROGEN IN THE HYDROCRACKING ZONE, TO PRODUCE A RELATIVELY AROMATIC PRODUCT, AND (B) A RELATIVELY LOW CONTINOUS PARTIAL PRESSURE OF HYDROGEN SULFIDE, BELOW ABOUT 0.2 MILLIMOLE THEREOF PER MOLE OF HYDROGEN IN THE HYDROCRACKING ZONE, TO PRODUCE A RELATIVELY NON-AROMATIC PRODUCT.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |