Mineral oils: processes and products – Fractionation – Liquid extraction with solvents
Patent
1986-12-04
1990-03-20
Caldarola, Glenn
Mineral oils: processes and products
Fractionation
Liquid extraction with solvents
208327, 208323, C10G 2106
Patent
active
049099272
ABSTRACT:
Hydrocarbon oils, particularly petroleum oils, more particularly lube, transformer, white oil and other specialty oils can be extracted to remove aromatic hydrocarbon components therefrom using a combination polar extraction solvent, such as n-methyl pyrrolidone phenol or furfural, preferably NMP in combination with aliphatic-aromatics, polar naphthenes or morpholine, preferably alkylbenzene, mixed extraction solvent.
The combination of polar extraction solvent and aliphatic-aromatic, polar naphthene or morpholine extraction solvent mixture contains and from 1 to up to but not including 10 LV % aliphatic-aromatic, polar naphthene or morpholine and mixtures thereof, preferably from 2.5 to less than 10% aliphatic-aromatic, polar naphthene or morpholine and from 0 to 10 LV % water, the amount of polar extraction solvent being suitably adjusted to reflect the presence of the water. Extraction using the combination solvent is conducted at a temperature above the haze point of the oil being extracted but at tower bottoms temperature at least 30.degree. C., and preferably 40.degree. C., or more below the critical solution temperature of the feed-solvent mixture.
REFERENCES:
patent: 2228507 (1941-01-01), Cook
patent: 2251773 (1941-08-01), Agruss
patent: 2922760 (1960-01-01), Beach et al.
patent: 2981663 (1961-04-01), Black
patent: 3167463 (1965-02-01), Norton et al.
patent: 3317422 (1967-05-01), Benham
patent: 3366568 (1968-01-01), Eisenlohr et al.
patent: 3415743 (1968-12-01), Benham
patent: 3449462 (1969-06-01), Alders et al.
patent: 3458431 (1969-07-01), Nixon
patent: 3673081 (1972-06-01), Preusser et al.
patent: 3721620 (1973-03-01), Paret et al.
patent: 3779904 (1973-12-01), Kubek et al.
patent: 3816302 (1974-06-01), Paret
patent: 4013549 (1977-03-01), Bushnell
patent: 4125458 (1978-11-01), Bushnell et al.
patent: 4325818 (1982-04-01), Woodle
patent: 4333824 (1982-06-01), Brown et al.
Allocca Joseph J.
Caldarola Glenn
Exxon Research and Engineering Company
LandOfFree
Extraction of hydrocarbon oils using a combination polar extract does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extraction of hydrocarbon oils using a combination polar extract, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraction of hydrocarbon oils using a combination polar extract will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-791000