C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/715
C07C 7/10 (2006.01) C10G 21/02 (2006.01) C10G 21/28 (2006.01)
Patent
CA 1163276
12805-1 METHOD OF SEPARATING AROMATIC AND NONAROMATIC HYDROCARBONS IN MIXED HYDROCARBON FEEDS ABSTRACT A process for separating aromatic and nonaromatic hydrocarbons which comprises a continuous solvent extraction - solvent decantation process. The process is particularly well-suited for a hydrocarbon feed comprising hydrocarbon mineral oils as a nonaromatic component wherein the process provides improved stability of said hydrocarbon mineral oils, normally susceptible to thermal degradation and oxidation and, further, decreases the tendency of such oils to form sludge. The process involves: (a) contacting such hydrocarbon feed in an extraction zone with an aromatic selective solvent, at a temperature of at least about 150°C, to provide an aromatic-rich solvent phase containing primarily aromatic hydrocarbons and solvent and a raffinate phase containing primarily nonaromatic hydrocarbons; (b) cooling the aromatic-rich solvent phase to bring about the formation of two phases; (c) introducing the phases of the cooled aromatic-rich solvent phase to a decantation zone and introducing therewith from about 0.5 to about 25.0% by weight of an anti-solvent for said aromatic hydrocarbon in said aromatic selective solvent to provide an aromatic-rich extract phase containing primarily aromatic hydrocarbons and a solvent phase containing primarily aromatic selective solvent and anti-solvent; (d) removing anti-solvent from said solvent phase and recycling said solvent phase to the extraction zone of -1- 12805-1 step (a); and (e) recovering the aromatic-rich extract of step (c) and the raffinate of step (a). S P E C I F I C A T I O N -2-
380653
Hopley William G.
Union Carbide Corporation
LandOfFree
Method of separating aromatic and nonaromatic hydrocarbons... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of separating aromatic and nonaromatic hydrocarbons..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of separating aromatic and nonaromatic hydrocarbons... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-319428