Monomer Transport Model of Olefin Polymerization

A novel comprehensive mathematical model extended from polymeric multigrain model (PMGM) to predict kinetic behavior, molecular weight and explain the higher rate of reaction and polydispersity index (PDI) using heterogeneous Ziegler-Natta catalysts for single propylene polymerization has been developed. The corrected polymeric multigrain model, which is also based on the multigrain model and some of the simpler continuum models, gives a more valid mathematical method and higher computational rate than multigrain model (MGM). In the mean time, the interstitial spaces among the microparticle make up the pores through which monomer transport occurs not only by diffusion, but also by convection driven by the pressure gradient caused by the monomer consumption within the particle especially for the newer and faster catalyst. So it is also the purpose of the present paper to use this solution methodology into the two-phase model with a reasonable simulation result