| abstract |
An apparatus for polymerizing olefins comprising a polymerization reactor and a vessel system for pre-activating a solid catalyst component, wherein the vessel system is arranged upstream of the polymerization reactor, the vessel system comprising a contacting vessel comprising a main portion, an inlet and an outlet, and comprising one or more stirring means positioned within the contacting vessel, wherein the ratio (H/D) of the height (H) of the main portion to the diameter (D) of the main portion is 1.8 or greater and each of the stirring means is located at a position between the inlet and the outlet; and a process for preparing a pre-activated solid catalyst component for use in the polymerization of 1-olefins. |