Supercritical process for producing deasphalted demetallized and

Details Supercritical process for producing deasphalted demetallized and Supercritical process for producing deasphalted demetallized and

1980-06-30

1981-09-22

Hearn, Brian E.

Mineral oils: processes and products

Fractionation

Deasphalting

C10G 2100

Patent

active

042908809

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 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 A portion of the second heavy phase is withdrawn and introduced into an upper portion of the second separation zone to countercurrently contact the second light phase.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.

REFERENCES:
patent: 2940920 (1960-06-01), Garwin
patent: 2943050 (1960-06-01), Beavon
patent: 3507777 (1970-04-01), Hemminger
patent: 3658695 (1972-04-01), Van Pool
patent: 3775293 (1973-11-01), Watkins
patent: 3972807 (1976-08-01), Uitti
patent: 3981797 (1976-09-01), Kellar
patent: 3998726 (1976-12-01), Bunas
patent: 4239616 (1980-12-01), Gearhart

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