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US 4,069,141 AGranted
Process for recovering fuel oil from topped crude
AssigneeTexaco Inc.
InventorsThomas A. Lionetti, Kenneth D. Miller, Levi C. Parker
Life of this patent
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Abstract
A topped crude oil is admixed with a hydrocarbon solvent and centrifuged in the presence of a brine carrier to produce a hydrocarbon solvent-fuel oil mixture and a brine-asphalt-fuel oil mixture, the latter mixture being recovered and admixed with a ketone solvent which effects emulsion breaking and extracts residual fuel oil, a ketone solvent rich phase being subsequently recovered and subjected to fractionation to separate the fuel oil from the ketone solvent, the latter being recycled for further usage.
Claims18
A process for recovering fuel oil from a topped crude oil comprising:
- a. admixing said topped crude oil with a hydrocarbon solvent;
- b. centrifuging said mixture of said topped crude oil and said hydrocarbon solvent in the presence of a brine carrier;
- c. recovering a brine-asphalt-fuel oil mixture from said centrifuging step;
- d. admixing said brine-asphalt-fuel oil mixture with a normally liquid ketone solvent selected from the class consisting of aliphatic and alicyclic ketones having at least four carbon atoms;
- e. recovering a ketone rich phase from the mixture produced in step (d);
- and
- f. recovering said fuel oil from said ketone rich phase.
4 more elements
Dependencies are inferred from the claim text.