PROCESS AND EQUIPMENT FOR THE PREPARATION OF AN OLEFINIC POLYMER

摘要

The invention relates to a process and a device that are suitable for the preparation of a polymer based on an olefinic monomer and optionally one or more comonomers that are copolymerisable therewith, in a horizontal reactor, divided into at least two zones and fitted with a stirring mechanism, which is operated under subfluidisation conditions, the polymer formed being discharg ed from the reactor separately from other reactor effluent, it being possible t o vary the composition of the overall feed to be supplied to a zone between tw o zones at least and the reactor effluent separated from polymer leaving the reactor as a single stream, at least part of this stream being returned to t he reactor as feed after one or more separating steps.