Patent ID: 7906597

Claim:
A system for supplying a polymerization catalyst to a polymerization reactor comprising: a) a storage vessel adapted to contain a concentrated catalyst slurry of solid catalyst particles in a diluent liquid; b) a mixing vessel connected to said storage vessel by at least one slurry conduit extending from said storage vessel to said mixing vessel; c) a transfer conduit extending from said mixing vessel to provide for the transfer of catalyst slurry from said mixing vessel to said polymerization reactor; d) a diluent supply line for supplying a diluent liquid to said concentrated catalyst slurry to provide for a diluted catalyst slurry in said mixing vessel; e) a cocatalyst storage vessel adapted to contain a cocatalyst; f) a cocatalyst supply line extending from said cocatalyst storage vessel to said transfer conduit to bring said cocatalyst into contact with said diluted catalyst slurry; g) an enlarged contact vessel interfaced in said transfer conduit between the connection of said cocatalyst supply line to said transfer conduit and said polymerization reactor.