Water treatment method for resin in a purge vessel

Details Water treatment method for resin in a purge vessel Water treatment method for resin in a purge vessel

C - Chemistry, Metallurgy

08

F

402/585

C08F 10/00 (2006.01) C08F 4/64 (2006.01) C08F 6/02 (2006.01)

Patent

CA 1286838

WATER TREATMENT METHOD FOR RESIN IN A PURGE VESSEL ABSTRACT The deactivation of Ziegler-Natta catalyst and organometallic cocatalyst residues present in the olefin polymer resins produced by the fluidized bed polymerization process is accomplished in a purge vessel by contacting the olefin polymer resin with an inert purge gas containing water the latter being present in said inert purge gas in an amount to establish and maintain a moisture front region in the resin bed of said purge vessel as to create a region above said moisture front substantially free of water and wherein deactivation of said catalyst and cocatalyst are effected in said moisture front region.

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