Mineral oils: processes and products – Fractionation – Deasphalting
Patent
1979-07-23
1980-12-16
Levine, Herbert
Mineral oils: processes and products
Fractionation
Deasphalting
208 45, C10G 2100
Patent
active
042396166
ABSTRACT:
A process for effecting a deep cut in a heavy hydrocarbon material without a decrease in the quality of the extracted oil caused by the presence of undesirable entrained resinous bodies. The heavy hydrocarbon material is admixed with a solvent and introduced into a first separation zone maintained at an elevated temperature and pressure to effect a separation of the feed into a first light phase and a first heavy phase comprising asphaltenes and some solvent. The first light phase is introduced into a second separation zone maintained at an elevated temperature and pressure to effect a separation of the first light phase into a second light phase comprising oils and solvent and a second heavy phase comprising resins and some solvent. A portion of the first heavy phase is withdrawn and introduced into an upper portion of the second separation zone to contact the second light phase after which it separates therefrom. The contacting removes at least a portion of any entrained resinous bodies from the oil contained in the second light phase.
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Addison William G.
Kerr-McGee Refining Corporation
Levine Herbert
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