Process for removing at least benzene from hydrocarbon streams

Details Process for removing at least benzene from hydrocarbon streams Process for removing at least benzene from hydrocarbon streams

C - Chemistry, Metallurgy

10

G

C10G 31/11 (2006.01) C10G 7/08 (2006.01) C10G 21/00 (2006.01) C10G 45/44 (2006.01) C10G 67/04 (2006.01)

Patent

CA 2665197

A method of removing at least benzene from a hydrocarbon stream comprises concentrating aromatics in the hydrocarbon stream by passing the hydrocarbon stream through a membrane unit having at least one membrane to produce a permeate stream and a retentate stream, wherein the permeate stream is aromatics rich relative to the hydrocarbon stream; and extracting aromatics after concentrating using a selective aromatics extraction solvent in an extraction unit to produce an extract stream, wherein the extract stream is aromatics rich relative to the permeate stream.

L'invention concerne un procédé permettant d'enlever au moins le benzène d'un courant d'hydrocarbure qui comprend les étapes consistant à concentrer les aromatiques dans le courant d'hydrocarbure en faisant passer le courant d'hydrocarbure à travers une unité membranaire ayant au moins une membrane pour produire un courant de perméat et un courant de rétentat, le courant de perméat étant riche en aromatiques par rapport au courant d'hydrocarbure, et extraire les aromatiques après concentration en utilisant un solvant sélectif d'extraction des aromatiques dans un unité d'extraction pour produire un courant d'extrait, le courant d'extrait étant riche en aromatiques par rapport au courant de perméat.

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