| abstract |
The apparatus for olefin polymerization 202 includes a plurality of cylindrical tube olefin polymerization reactors 202a and 202b, each reactor comprising an olefin polymerization reaction mixture inlet joint and a crude polyolefin product outlet joint 55a, 55b. . Each reactor 202a, 202b has a pump 25a, arranged to circulate the reaction mixture, independently of the introduction of the olefin polymerization reaction mixture into the reactors 202a, 202b through the tubular side of the reactors 202a, 202b. It is installed in the recirculation system including 25b). The apparatus 202 also has an inlet reaction mixture distribution manifold 215, 15a, 15b and an outlet polymerization reaction mixture collection manifold 255, 55a, which interconnect the reactors 202a, 202b for operation in parallel. 55b). The apparatus 202 also includes a catalyst composition and a catalyst reformer inlet for each reactor 202a, 202b arranged such that the catalyst modifier can be introduced into each reactor 202a, 202b at a rate independent of the introduction of the catalyst composition. 16a, 16b, 30a, 30b). The apparatus 202 further includes a crude polyolefin product catalyst removal and cleaning system comprising a plurality of settling vessels 302, 306, 308 associated with the piping and an inlet 318 of the catalyst killing agent. This crude polyolefin product catalyst removal and washing system controls receiving crude polyolefin product from crude polyolefin product outlet 255 and removing residual catalyst therefrom. |