Patent US2895902A successfully refreshed from Google Patents.
US2895902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of metal contaminants from residual oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-11-27
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Granted: 1959-07-21
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Expires: 1976-11-27
Abstract
No abstract record available.
Inventors
- 👤 Nick P Peet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:13
CPC Classifications
C; C10; C10G; C10G55/00; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A METHOD OF TREATING A PETROLEUM FRACTION FEED STOCK CONTAINING A MAJOR PORTION OF COMPONENTS BOILING ABOVE 900* F. AND CONTAMINATED BY A SUBSTANTIAL AMOUNT OF METAL CONTAMINANTS WHICH COMPRISES DEASPHALT ING SAID FEED STOCK WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON SOLVENT TO SEPARATE ASPHALT FROM SAID FEED STOCK AND TO FORM A SOLUTION OF DEASPHALTED OIL IN SAID SOLVENT CONTACTING SAID SOLUTION OF DEASPHALTED OIL WITH A WASH OIL CONTAINING AS ITS PRINCIPAL COMPONENT A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS AND RERECOVERING SAID THUS TREATED DEASPHALTED OIL ,SAID RECOVERED DEASPHALTED OIL BEING SUBSTANTIALLY COMPLETELY FREE FROM METAL CONTAMINANTS, SAID SYNTHETIC ASPHALT HAVING BEEN PRODUCED BY THERMAL CRACKING OF CYCLE STOCK OBTAINED IN THE CATALYTIC CRACKING OF GAS OIL.
Claim 2
Independent Claim
121 words
A METHOD OF TREATING A PETROLEUM FRACTION FEED STOCK CONTAINING A MAJOR PORTION OF COMPONENTS BOILING ABOVE 900* F. AND CONTAMINATED BY A SUBSTANTIAL AMOUNT OF METAL CONTAMINANTS WHICH COMPRISES DEASPHALT ING SAID FEED STOCK WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON SOLVENT TO SEPARATE ASPHALT FROM SAID FEED STOCK AND TO FORM A SOLUTION OF DEASPHALTED OIL IN SAID SOLVENT CONTACTING SAID SOLUTION OF DEASPHALTED OIL WITH A WASH OIL CONTAINING AS ITS PRINCIPAL COMPONENT A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS AND RERECOVERING SAID THUS TREATED DEASPHALTED OIL ,SAID RECOVERED DEASPHALTED OIL BEING SUBSTANTIALLY COMPLETELY FREE FROM METAL CONTAMINANTS, SAID SYNTHETIC ASPHALT HAVING BEEN PRODUCED BY THERMAL CRACKING OF CYCLE STOCK OBTAINED IN THE CATALYTIC CRACKING OF GAS OIL.
Claim 3
Dependent Claim
197 words
AN IMPROVED METHOD FOR TREATING A METALS CONTAMINATED CRUDE PETROLEUM OIL INCLUDING THE STEPS OF DISTILLING SAID CRUDE PETROLEUM OIL TO OBTAIN A DISTILLATE GAS OIL FRACTION AND A RESIDUAL FRACTION CONTAMINATED WITH A SUBSTANTIAL AMOUNT OF SAID METALLIC COMPONENTS OF SAID CRUDE OIL DEASPHALTING SAID RESIDUAL FRACTION WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON SOLVENT TO SEPARATE ASPHALT FROM SAID RESIDUAL FRACTION AND TO FORM A SOLUTION OF DEASPHALTED OIL IN SAID SOLVENT, CONTACTING SAID SOLUTION OF DEASPHALTED OIL WITH A WASH OIL CONTAINING AS ITS PRINCIPAL COMPONENT A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS RECOVERING SAID THUS TREATED DEASPHALTED OIL AND MIXING THE SAME WITH SAID DISTILLATE GAS OIL FRACTION,CHARGING SAID MIXTURE TO A CATALYTIC CRACKING ZONE TO CATALYTICALLY CRACK THE SAME DISTILLING THE PRODUCTS FROM SAID CATALYTIC CRACKING ZONE TO RECOVER DISTILLATE PRODUCTS LIGHTER THAN SAID FEED MIXTURE TO SAID CATALYTIC CRACKING ZONE AND A CYCLE STOCK FRACTION, THERMALLY CRACKING SAID CYCLE STOCK FRACTION DISTILLING THE PRODUCTS FROM SAID THERMAL CRACKING TO RECOVER A BOTTOMS PRODUCT COMPRISING A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS, SAID THUS OBTAINED SYNTHETIC ASPHALT BEING THE SYNTHETIC ASPHALT UTILIZED FOR THE CONTACTING OF SAID SOLUTION OF DEASPHALTED OIL.
Claim 4
Dependent Claim
197 words
AN IMPROVED METHOD FOR TREATING A METALS CONTAMINATED CRUDE PETROLEUM OIL INCLUDING THE STEPS OF DISTILLING SAID CRUDE PETROLEUM OIL TO OBTAIN A DISTILLATE GAS OIL FRACTION AND A RESIDUAL FRACTION CONTAMINATED WITH A SUBSTANTIAL AMOUNT OF SAID METALLIC COMPONENTS OF SAID CRUDE OIL DEASPHALTING SAID RESIDUAL FRACTION WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON SOLVENT TO SEPARATE ASPHALT FROM SAID RESIDUAL FRACTION AND TO FORM A SOLUTION OF DEASPHALTED OIL IN SAID SOLVENT, CONTACTING SAID SOLUTION OF DEASPHALTED OIL WITH A WASH OIL CONTAINING AS ITS PRINCIPAL COMPONENT A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS RECOVERING SAID THUS TREATED DEASPHALTED OIL AND MIXING THE SAME WITH SAID DISTILLATE GAS OIL FRACTION,CHARGING SAID MIXTURE TO A CATALYTIC CRACKING ZONE TO CATALYTICALLY CRACK THE SAME DISTILLING THE PRODUCTS FROM SAID CATALYTIC CRACKING ZONE TO RECOVER DISTILLATE PRODUCTS LIGHTER THAN SAID FEED MIXTURE TO SAID CATALYTIC CRACKING ZONE AND A CYCLE STOCK FRACTION, THERMALLY CRACKING SAID CYCLE STOCK FRACTION DISTILLING THE PRODUCTS FROM SAID THERMAL CRACKING TO RECOVER A BOTTOMS PRODUCT COMPRISING A SYNTHETIC ASPHALT SUBSTANTIALLY FREE FROM METAL CONTAMINANTS, SAID THUS OBTAINED SYNTHETIC ASPHALT BEING THE SYNTHETIC ASPHALT UTILIZED FOR THE CONTACTING OF SAID SOLUTION OF DEASPHALTED OIL.
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |