Patent ID: 7196238
Filing Date: 2007-03-27
Classification: C07C,Y02P

Abstract:
1. A process for dimerizing olefinic, lower hydrocarbons, comprising: feeding a fresh olefinic hydrocarbon feedstock to a reaction zone; contacting the olefinic hydrocarbons of the feedstock in liquid phase with an acid catalyst in the reaction zone, wherein the acid catalyst is selected from the group of natural and synthetic medium pore zeolites; withdrawing an effluent containing dimerized olefins from the reaction zone; conducting the effluent to a separation zone, wherein the dimerized reaction product is separated from said effluent; withdrawing from said separation zone a first product containing unreacted hydrocarbons; recycling at least a part of the first product to the reaction zone; and recovering from said separation zone a second product containing dimerized olefins; wherein the conversion rate of the olefinic hydrocarbons fed to the reaction zone is adjusted so as to provide a ratio of dimeric compounds to the total molar amount of converted olefins of at least 0.8.