Aromatics extraction from hydrocarbon oil using tetramethylene s

Details Aromatics extraction from hydrocarbon oil using tetramethylene s Aromatics extraction from hydrocarbon oil using tetramethylene s

1993-09-07

1999-03-09

Caldarola, Glenn A.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

585856, 585857, C07C 710

Patent

active

058803254

ABSTRACT:
Aromatic hydrocarbons are selectively extracted from lube oil stocks comprising mixtures of same with non-aromatic hydrocarbons using tetramethyl sulfoxide as the extraction solvent. The oils so extracted are the heavier oils, those boiling above about 200.degree. C. and identified as being at least lube base stock grade 60N and higher.

REFERENCES:
patent: 3092571 (1963-06-01), Francis
patent: 4280881 (1981-07-01), Montagna et al.
patent: 4371428 (1983-02-01), Montagna et al.
"Liquid-Liquid Equilibrium Studies for Separation of Aromatics" Rawat, et al. J. Appl. Chem. Biotechnol, 1976, 26, 425-435.

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