Selective separation of multi-ring aromatic hydrocarbons from di

Details Selective separation of multi-ring aromatic hydrocarbons from di Selective separation of multi-ring aromatic hydrocarbons from di

1989-12-19

1990-10-09

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By membrane, selective septum, or coalescer

208308, 210651, 21050028, 21050038, C07C 7144

Patent

active

049622714

ABSTRACT:
Membrane separation under perstraction conditions of a lube oil distillate is disclosed which produces a retentate rich in non-aromatics hydrocarbons and alkyl aromatic and a permeate rich in multi-ring aromatics. The recovered retentate is similar to a solvent extracted raffinate but possesses a higher concentration of alkyl-single ring aromatics. The membrane separation process is highly selective for removing multi-ring aromatics from the lube distillate.

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"Separation of C.sub.8 Aromatic Isomers by Pervaporation through Commercial Polymer Membranes", McCandless, et al., J. Membrane Sci. 30 1987 (pp. 111-116).

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