Method of extractive purification of residues from crude oil ref

Details Method of extractive purification of residues from crude oil ref Method of extractive purification of residues from crude oil ref

1979-06-27

1981-12-15

Gantz, Delbert E.

Mineral oils: processes and products

Fractionation

Deasphalting

208181, C10G 2116

Patent

active

043058132

ABSTRACT:
The subject of the invention is a method of extractive purification of prcts of crude oil processing, especially of residues, of heavy ends, extracts and used oils, from tars of asphaltenes and other compounds.
The process is conducted employing an extraction solvent and an additional substance having a limited miscibility with the extraction solvent. The substance constituting the additional solvent is appropriate for rapid obtaining of a distinct limit of phase separation.

REFERENCES:
patent: 2213798 (1940-09-01), Anne
patent: 3364138 (1968-01-01), Campagne et al.
patent: 4069141 (1978-01-01), Lionetti et al.

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