05045206 is referenced by 15 patents and cites 29 patents.

Multi-ring aromatic hydrocarbons and/or toxins are selectively solvent extracted from hydocarbon feed streams by the process comprising contacting the aromatics and/or toxins containing hydrocarbon stream with one side of a porous, non-selective partition barrier membrane while simultaneously contacting the other side of said membrane with an aromatics selective extraction solvent whereby the multi-ring aromatic hydrocarbons and/or toxins selectively migrate through the porous partition barrier membrane in response to the selective solvent. A preferred extraction solvent is ethylenediamine. The permeate comprising multi-ring aromatics in solvent can be subjected to a membrane separation process to separate the extraction solvent from the aromatics.

Title
Selective multi-ring aromatics extraction using a porous, non-selective partition membrane barrier
Application Number
7/622706
Publication Number
5045206
Application Date
December 5, 1990
Publication Date
September 3, 1991
Inventor
James R Sweet
Baton Rouge
LA, US
Tan Jen Chen
Clearwater
CA
Agent
Joseph J Allocca
Assignee
Exxon Research & Engineering Company
NJ, US
IPC
B01D 3/00
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