Selective separation of naphthenes from paraffins by membrane ex

Details Selective separation of naphthenes from paraffins by membrane ex Selective separation of naphthenes from paraffins by membrane ex

1990-12-05

1992-04-21

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By membrane, selective septum, or coalescer

208308, 210644, 210650, 210651, C07C 7144, B01D 1100

Patent

active

051070561

ABSTRACT:
Naphthenic hydrocarbons are separated from aliphatic rich hydrocarbon feeds comprising mixtures of naphthenes with paraffinic hydrocarbons by a membrane extraction process whereby the hydrocarbon feed is contacted with one face of a porous, non-selective partition barrier membrane while simultaneously contacting the other side of said membrane with a polar solvent such as ethylenediamine. The naphthenic hydrocarbon preferentially migrates through the porous membrane partition barrier in response to the polar solvent present on the permeate side of the barrier.

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