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US 4,440,633 AGranted
Process for solvent deasphalting heavy hydrocarbon fractions
AssigneeInstitut Francais du Petrole
InventorsYves Jacquin, Manuel Gimenez-Coronado, Huynh Dai-Nghia
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Abstract
Heavy hydrocarbon fractions are made free of asphaltenes and/or resins by extraction with a deasphalting solvent in the presence of ultrasonic radiation.
Claims8
In a process for deasphalting a heavy hydrocarbon fraction containing asphaltenes, comprising the step of admixing said fraction with a deasphalting solvent, thereby forming a first liquid phase, being a hydrocarbons solution in said solvent and having a reduced asphaltene content, and a second liquid phase, being an asphalt fraction having an increased asphaltene content;
- separating said first and second liquid phases;
- and removing the solvent from said first liquid phase and recovering the resultant deasphalted oil,
- the improvement wherein said admixing is effected in a contact zone, at least a portion of which is subjected to ultrasonic radiation.
Dependencies are inferred from the claim text.