Patent ID: 6211423
Filing Date: 2001-04-03
Classification: C07C

Abstract:
A process for treating a feedstock comprising saturated hydrocarbons, internal olefins, and alpha olefins, comprising:a) contacting the feedstock with a linear polyaromatic compound in a first reaction zone under conditions effective to form a first reaction mixture comprising first linear polyaromatic compound-olefin adducts and said saturated hydrocarbons;b) separating said olefin adducts from the saturated hydrocarbons in the reaction mixture to form a first linear polyaromatic compound-olefin adduct stream and a first saturated hydrocarbon stream;si) contacting at least a portion of the first saturated hydrocarbon stream with a linear polyaromatic compound in a second reaction zone under conditions effective to form a second reaction mixture comprising a second linear polyaromatic compound-olefin adduct and said saturated hydrocarbons;sii) separating said second linear polyaromatic compound-olefin adduct from the second reaction mixture in the second reaction zone to form a second linear polyaromatic compound-olefin adduct stream and a second saturated hydrocarbon stream, wherein the concentration of the saturated hydrocarbons in the second saturated hydrocarbon stream is enriched over the concentration of saturated hydrocarbons in the first saturated hydrocarbon stream, and the concentration of the saturated hydrocarbons in the first saturated hydrocarbon stream is enriched over the concentration of saturated hydrocarbons in the feedstock; andoi) dissociating said first linear polyaromatic compound-olefin adducts to form linear polyaromatic compounds and a first olefin composition comprising alpha olefins and internal olefins;oai) contacting the first olefin composition with a linear polyaromatic compound in a third reaction zone under conditions effective to form a reaction mixture comprising linear polyaromatic compound-alpha olefin adducts and an internal olefin composition;oaii) separating said linear polyaromatic compound-alpha olefin adducts, and optionally unreacted linear polyaromatic compounds as well, from the reaction mixture in the third reaction zone to form a linear polyaromatic compound-alpha olefin adduct stream and an internal olefin stream;oaiii) dissociating the linear polyaromatic compound-alpha olefin adducts to form linear polyaromatic compounds and an alpha olefin composition;whereby the concentration of alpha olefins in the alpha olefin composition is enriched over the concentration of alpha olefins in the first olefin composition, and the concentration of alpha olefins in the first olefin composition is enriched over the concentration of alpha olefins in the feedstock.