Process for removing hydrocarbons from polymer slurries

Details Process for removing hydrocarbons from polymer slurries Process for removing hydrocarbons from polymer slurries

C - Chemistry, Metallurgy

08

F

C08F 6/10 (2006.01) B01D 3/06 (2006.01) B01J 8/00 (2006.01) C08F 6/00 (2006.01)

Patent

CA 2127785

2127785 9313843 PCTABS00024 A highly energy efficient process for removing hydrocarbons from polymer slurries is disclosed. The process includes feeding a hydrocarbon-containing polymer slurry to a flash tank to flash a portion of the hydrocarbon from the slurry. Thereafter, the resulting slurry is fed to a fluid bed dryer wherein additional hydrocarbon is stripped from the polymer. Subsequently, the resulting polymer powder is transferred to a powder silo wherein further hydrocarbon is removed from the polymer utilizing a heated purge gas flowing countercurrent to the polymer powder. The polymer output preferably has a low hydrocarbon content, on the order of 100 ppm or less.

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