Deasphalting process

Details Deasphalting process Deasphalting process

1975-02-21

1976-08-17

Levine, Herbert

Mineral oils: processes and products

Fractionation

Deasphalting

C10G 2114

Patent

active

039753964

ABSTRACT:
An asphalt-containing mineral oil is deasphalted by contacting the oil at elevated temperature and elevated pressure with a deasphalting solvent comprising acetone and a three carbon atom containing-hydrocarbon, such as propylene, for a time sufficient to remove a substantial portion of the asphaltenes from the oil. Utilization of propylene-acetone as the deasphalting solvent permits utilization of higher treating tower temperatures, which may be desirable in those instances where air cooling of the solvent is provided. This process is particularly suited for the preparation of lubricating oils of low asphalt content.

REFERENCES:
patent: 2045742 (1936-06-01), Winning et al.
patent: 2130147 (1938-09-01), Milmore
patent: 2337448 (1943-12-01), Carr
patent: 2500757 (1950-03-01), Kiersted

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