PROCESSO PARA A POLIMERIZAÇÃO DE OLEFINA COM A UTILIZAÇÃO DE MÚLTIPLOS REATORES DE ALÇA

摘要

A process for the slurry polymerization of one or more a-olefins in a sequence of at least two loop reactors interconnected by means of a transfer line, the transfer of polymer from a first loop reactor to a second loop reactor comprising the steps: i) establishing a recycle of polymer slurry to the second loop reactor by means of said transfer line, whereby a fraction of polymer slurry S1 withdrawn from said second loop reactor is continuously recycled back to it; ii) discharging a fraction of polymer slurry produced in the first loop reactor into a discharge line connected to said transfer line;