US3284341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing olefins and aromatics by the catalytic cracking of a naphtha
Assignee: Gulf Research and Development Co
•
Filing: 1964-03-20
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Granted: 1966-11-08
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Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Henke
- 👤 Robert E Kline
- 👤 William C Offutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C10; C10G; C10G11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A HIGHLY SELECTIVE PRICESS FOR THE CATALYTIC CONVERSION OF A HYDROCARBON FEED STOCK SELECTED FROM AN NAPHTHA-GASOLINE FRACTION BOILING IN THE RANGE OF BETWEEN ABOUT 1000 AND 450*F. WHICH COMPRISES CONTACTING SAID FEED STOCK WITH A SILICA ALUMINA CRACKING CATALYST CONTAINING ABOUT 10 TO 50%% ALUMINA AT A LIQUID HOURLY SPACE VELOCITY BETWEEN ABOUT 4.5 AND 8, AT PRESSURE BETWEEN ABOUT 600 MM. AND 20 P.S.I.G., AND AT TEMPERATURE BETWEEN ABOUT 1000* AND 1200*F., THEREBY PRODUCING A HIGH YIELD OF MIXED OLEFINIC HYDROCARBONS HAVING FROM 2 TO 5 CARBON ATOMS AND MIXED AROMATIC HYDROCARBONS HAVING FROM 6 TO 8 CARBONS AND A REDUCED YIELD OF SATURATED GASEOUS HYDROCARBONS AND COKE.
Claim 2
Dependent Claim
110 words
A HIGHLY SELECTIVE PRICESS FOR THE CATALYTIC CONVERSION OF A HYDROCARBON FEED STOCK SELECTED FROM AN NAPHTHA-GASOLINE FRACTION BOILING IN THE RANGE OF BETWEEN ABOUT 1000 AND 450*F. WHICH COMPRISES CONTACTING SAID FEED STOCK WITH A SILICA ALUMINA CRACKING CATALYST CONTAINING ABOUT 10 TO 50%% ALUMINA AT A LIQUID HOURLY SPACE VELOCITY BETWEEN ABOUT 4.5 AND 8, AT PRESSURE BETWEEN ABOUT 600 MM. AND 20 P.S.I.G., AND AT TEMPERATURE BETWEEN ABOUT 1000* AND 1200*F., THEREBY PRODUCING A HIGH YIELD OF MIXED OLEFINIC HYDROCARBONS HAVING FROM 2 TO 5 CARBON ATOMS AND MIXED AROMATIC HYDROCARBONS HAVING FROM 6 TO 8 CARBONS AND A REDUCED YIELD OF SATURATED GASEOUS HYDROCARBONS AND COKE.
References Cited (Backward Citations)
US2385326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |