IMPROVED DRYING PROCESS FOR LINEAR ALPHA OLEFINS

摘要

The present invention relates to a method for preparing linear alpha-olefins by oligomerisation of ethylene, comprising the steps of: (i) oligomerising ethylene in a reactor in the presence of a solvent and a catalyst; (ii) transferring a liquid organic outlet stream of the reactor, containing solvent, catalyst, dissolved ethylene and linear alpha-olefins, to a catalyst deactivation section; (iii) deactivating the catalyst by washing the outlet stream with an aqueous basic phase to obtain a deactivated catalyst containing aqueous phase and a water saturated organic phase; (iv) separating the aqueous phase and the organic phase from step (iii); (v) transferring the water saturated organic phase to a distillation column; (vi) distilling the water saturated organic phase; and (vii) separating the distilled organic and aqueous phases.