SYSTEM AND PROCESS FOR OLEFIN POLYMERIZATION

摘要

The present invention provides a system and process for olefin polymerization. The inventive system and process for olefin polymerization facilitate lower operating vacuum pressures in the polymer recovery system by requiring at least two sequential condensing units, wherein at least one of the condensing units operates at significantly lower temperature ranges than the temperature ranges at which the current systems operate.

主权项

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 means for conveying said polymer-solvent-catalyst mixture; wherein said one or more means for conveying said polymer-solvent-catalyst mixture further provide means for deactivating said catalyst in said polymer-solvent-catalyst mixture and means for contacting said polymer-solvent-deactivated catalyst mixture with an acid scavenger, whereby a polymer-solvent-acid mixture is formed; (c) one or more means for heating said polymer-solvent-acid mixture, wherein said one or more means for heating is in communication with said one or more reactors via said one or more means for conveying of said polymer-solvent-catalyst mixture; (d) means for conveying said heated polymer-solvent-acid mixture; (e) one or more means 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 means for removing at least 60 percent of said solvent is in communication with said one or more means for heating; (f) one or more means 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 means for removing substantially the remaining portion of said solvent is in communication with said one or more means for one or more means for removing at least 60 percent of said solvent; (g) one or more means for removing said acid from the solvent-acid mixture; whereby a substantially acid free solvent is formed, and wherein said one or more means for removing said acid is in communication with said one or more means for removing substantially the remaining portion of said solvent; and (h) one or more means for removing said substantially acid free solvent in communication with the one or more means for removing said acid.