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 and organometallic compounds. The heavy hydrocarbon material is contacted with a solvent in a first separation zon

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 and organometallic compounds. The heavy hydrocarbon material is contacted with a solvent in 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 A portion of the second heavy phase is withdrawn and introduced into an upper portion of the second separation zone to countercurrently contact the second light phase. The contacting removes at least a portion of any entrained resinous bodies and organometallic compounds from the oils contained in the second light phase.

대표청구항 ▼

A process for producing a low metals content deasphalted oil from a heavy hydrocarbon material comprising: introducing a heavy hydrocarbon material comprising oils, resins, asphaltenes and associated organometallic compounds and a solvent into a first separation zone maintained at a temperature at l

A process for producing a low metals content deasphalted oil from a heavy hydrocarbon material comprising: introducing a heavy hydrocarbon material comprising oils, resins, asphaltenes and associated organometallic compounds and a solvent into a first separation zone maintained at a temperature at least equal to the critical temperature of said solvent and a pressure at least equal to the critical pressure of said solvent to effect a separation of said heavy hydrocarbon material and solvent into a first light phase comprising oils, resins, some of the organometallic compounds and solvent and a first heavy phase comprising asphaltenes, organometallic compounds and some solvent; introducing said first light phase into a second separation zone maintained at a temperature level higher than the temperature in said 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 organometallic compounds and solvent which collects in an upper portion of said second separation zone and a second heavy phase comprising resins and some solvent; withdrawing at least a portion of said second heavy phase from said second separation zone; recycling at least a portion of said withdrawn second heavy phase into said upper portion of said second separation zone to contact said second light phase and settle through said second light phase to remove at least a portion of the entrained resins and organometallic compounds; and recovering said second light phase comprising solvent and deasphalted oil having a reduced metals content after contact with said recycled second heavy phase.