Deasphalting process

Mineral oils: processes and products – Fractionation – Deasphalting

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208 45, C10C 300, C10G 2116

Patent

active

043246516

ABSTRACT:
An asphalt-containing mineral oil can be deasphalted at temperatures above about 80.degree. C. with methanol serving as the deasphalting solvent. Two liquid phases are produced, an asphalt-rich phase and a methanol-rich phase. By cooling the methanol-rich phase to a temperature below 80.degree. C., two additional liquid phases are produced, an oil-rich phase and a methanol-rich phase.

REFERENCES:
patent: 1766768 (1930-06-01), Werkentnin
patent: 2500757 (1950-03-01), Kiersted, Jr.
patent: 2669538 (1954-02-01), Yurasko et al.
patent: 4125458 (1978-11-01), Busnell et al.

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