초록 ▼

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 a

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 A portion of the first heavy phase is withdrawn and introduced into an upper portion of the second separation zone to contact the second light phase after which it separates therefrom.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.

대표청구항 ▼

A deasphalting process comprising: providing a heavy hydrocarbon material; providing a solvent; admixing said heavy hydrocarbon material with said solvent in a mixing zone to form a mixture; introducing said mixture into a first separation zone maintained at an elevated temperature and pressure to e

A deasphalting process comprising: providing a heavy hydrocarbon material; providing a solvent; admixing said heavy hydrocarbon material with said solvent in a mixing zone to form a mixture; introducing said mixture into a first separation zone maintained at an elevated temperature and pressure to effect a separation of said mixture into a first light phase comprising oils, resins and solvent and a first heavy phase comprising asphaltenes and some solvent; introducing said first light phase into a second separation zone maintained at a temperature level higher than the temperature in the first separation zone and at an elevated pressure to effect a separation of said first light phase into a second light phase comprising oils, entrained resins and solvent which collects in an upper portion of said second separation zone and a second heavy phase comprising resins and some solvent; withdrawing said first heavy phase from said first separation zone; introducing at least a portion of said first heavy phase into said upper portion of said second separation zone to contact said second light phase and settle therethrough to remove at least a portion of the entrained resins; introducing said second light phase after contact with said first heavy phase into a third separation zone maintained at an elevated temperature and pressure to effect a separation of said second light phase into a third light phase comprising solvent and a third heavy phase comprising oils; and recovering the third heavy phase as a product.