Process for the preparation and recovery of olefins

A process for the preparation and recovery of olefins, said process comprising:- (i) passing a feed stream comprising paraffins having in the range of from 20 to 28 carbon atoms to a dehydrogenation zone, operating the dehydrogenation zone at dehydrogenation conditions sufficient to dehydrogenate paraffins, and recovering from the dehydrogenation zone a dehydrogenation product stream comprising monoolefins and paraffins wherein the monoolefins in the dehydrogenated product stream have in the range of from 20 to 28 carbon atoms; and (ii) passing the dehydrogenation product stream to a separation zone and contacting said dehydrogenation product stream with a bed of adsorbent under conditions which cause the selective retention of the monoolefins having in the range of from 20 to 28 carbon atoms on the adsorbent and recovering the retained monoolefins having in the range of from 20 to 28 carbon atoms from the adsorbent by contacting the adsorbent with a desorbent.