Patent US2772218A successfully refreshed from Google Patents.
US2772218A
Expired / Lapsed
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Process for the upgrading of hydrocarbons by hydrogen-donor diluent cracking
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-12-08
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Granted: 1956-11-27
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Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Homer Z Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:02
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/32; C10G47/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PROCESS FOR UPGRADING HEAVY HYDROCARBONACEOUS OILS WHICH COMPRISES THE STEPS OF PARTIALLY HYDROGENERATING IN A HYDROGENATION ZONE A RECYCLED HYDROCARBON STREAM OBTAINED AS HEREINAFTER DESCRIBED TO FORM A HYDROGEN DONOR DILUENT, ADMIXING SAID DONOR DILUENT WITH A HEAVY OIL FEED AND A RECYCLED BOTTOMS FRACTION, THERMALLY CRACKING THE RESULTING MIXTURE, AND SEPARATING THE CRACKED MIXTURE INTO AT LEAST A LIGHT FRACTION AS PRODUCT, A DILUENT FRACTION BOILING BETWEEN ABOUT 700* AND 900* F. AND A BOTTOMS FRACTION; THE IMPROVEMENT WHICH COMPRISES PASSING AT LEAST A PORTION OF SAID DILUENT FRACTION TO AN AROMATIC SEPARATION ZONE, SEPARATING FROM SAID PORTION OF DILUENT FRACTION A CONCENTRATE CONTAINING SUBSTANTIALLY INCREASED PROPORTIONS OF CONDENSED RING AROMATICS BY SELECTIVE SOLVENT TREATMENT AND PASSING SAID CONCENTRATE TO SAID HYDROGENATION ZONE TO SUPPLY AT LEAST A PORTION OF SAID RECYCLED HYDROCARBON STREAM.
Claim 2
Dependent Claim
137 words
IN A PROCESS FOR UPGRADING HEAVY HYDROCARBONACEOUS OILS WHICH COMPRISES THE STEPS OF PARTIALLY HYDROGENERATING IN A HYDROGENATION ZONE A RECYCLED HYDROCARBON STREAM OBTAINED AS HEREINAFTER DESCRIBED TO FORM A HYDROGEN DONOR DILUENT, ADMIXING SAID DONOR DILUENT WITH A HEAVY OIL FEED AND A RECYCLED BOTTOMS FRACTION, THERMALLY CRACKING THE RESULTING MIXTURE, AND SEPARATING THE CRACKED MIXTURE INTO AT LEAST A LIGHT FRACTION AS PRODUCT, A DILUENT FRACTION BOILING BETWEEN ABOUT 700* AND 900* F. AND A BOTTOMS FRACTION; THE IMPROVEMENT WHICH COMPRISES PASSING AT LEAST A PORTION OF SAID DILUENT FRACTION TO AN AROMATIC SEPARATION ZONE, SEPARATING FROM SAID PORTION OF DILUENT FRACTION A CONCENTRATE CONTAINING SUBSTANTIALLY INCREASED PROPORTIONS OF CONDENSED RING AROMATICS BY SELECTIVE SOLVENT TREATMENT AND PASSING SAID CONCENTRATE TO SAID HYDROGENATION ZONE TO SUPPLY AT LEAST A PORTION OF SAID RECYCLED HYDROCARBON STREAM.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |