Patent ID: 9290594
Filing Date: 2016-03-22
CPC Classification: B01J,C08F

Claim Text:
1. An olefin polymerization system comprising: (a) one or more reactors for polymerizing one or more olefin monomers in the presence of one or more catalyst systems and solvent to produce a polymer-solvent-catalyst mixture; (b) one or more first conduits for conveying said polymer-solvent-catalyst mixture; wherein said one or more conduits for conveying said polymer-solvent-catalyst mixture further provide first injection ports for deactivating said catalyst in said polymer-solvent-catalyst mixture and second injection ports for contacting said polymer-solvent-deactivated catalyst mixture with an acid scavenger, whereby a polymer-solvent-acid mixture is formed; (c) one or more heat exchanger for heating said polymer-solvent-acid mixture, wherein said one or more heat exchangers for heating is in communication with said one or more reactors via said one or more first conduits for conveying of said polymer-solvent-catalyst mixture; (d) one or more second conduits and optionally one or more screw pumps for conveying said heated polymer-solvent-acid mixture; (e) one or more first devolatilizers for removing at least 60 percent of said solvent from said heated polymer-solvent-acid mixture, whereby a polymer-reduced solvent-acid mixture is formed, and wherein said one or more first devolatilizers for removing at least 60 percent of said solvent is in communication with said one or more heat exchangers for heating; (f) one or more second devolatilizers for removing substantially the remaining portion of the solvent and acid from said polymer-reduced solvent-acid mixture, whereby a solvent-acid mixture is formed, and wherein said one or more second devolatilizers for removing substantially the remaining portion of said solvent is in communication with said one or more first devolatilizers for removing at least 60 percent of said solvent; (g) one or more first condensers for removing said acid from the solvent-acid mixture; whereby a substantially acid free solvent is formed, and wherein said one or more first condensers for removing said acid is in communication with said one or more second devolatilizers for removing substantially the remaining portion of said solvent; and (h) one or more second condensers for removing said substantially acid free solvent in communication with the one or more first condensers for removing said acid.