TY - JOUR
T1 - An effectiveness factor model for slurry phase olefin polymerizations
AU - Zhang, Shuaifeng
AU - Zhang, Qinghua
AU - Kong, Bo
AU - Yang, Chao
AU - Fox, Rodney O.
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/4/6
Y1 - 2022/4/6
N2 - The multigrain model (MGM) is the most widely used single-particle model, giving a detailed description of phenomena during olefin polymerization. However, the detailed modeling of the diffusion–reaction process inside the catalyst particles requires solving a large number of ordinary differential equations, which is unsuitable for coupling with multiphase CFD tools. That is the reason why the current CFD simulation studies of olefin polymerization reactors rarely consider intraparticle transport. To fill this gap, an effectiveness factor model (EFM) is developed from MGM for slurry olefin polymerizations. It maintains the multilevel framework of MGM and is suitable for use in multiphase CFD simulations. The MGM and EFM are first implemented into OpenFOAM. Moreover, the EFM has been validated by comparison with literature data. Detailed comparisons between MGM and EFM show that the EFM can produce similar results as the MGM with a much lower computation cost for olefin slurry polymerization when αi,mp < 2.0.
AB - The multigrain model (MGM) is the most widely used single-particle model, giving a detailed description of phenomena during olefin polymerization. However, the detailed modeling of the diffusion–reaction process inside the catalyst particles requires solving a large number of ordinary differential equations, which is unsuitable for coupling with multiphase CFD tools. That is the reason why the current CFD simulation studies of olefin polymerization reactors rarely consider intraparticle transport. To fill this gap, an effectiveness factor model (EFM) is developed from MGM for slurry olefin polymerizations. It maintains the multilevel framework of MGM and is suitable for use in multiphase CFD simulations. The MGM and EFM are first implemented into OpenFOAM. Moreover, the EFM has been validated by comparison with literature data. Detailed comparisons between MGM and EFM show that the EFM can produce similar results as the MGM with a much lower computation cost for olefin slurry polymerization when αi,mp < 2.0.
KW - Multigrain model
KW - Slurry phase polymerization
KW - Catalyzed olefin polymerization
KW - Effectiveness factor
UR - http://www.scopus.com/inward/record.url?scp=85123704757&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2022.117429
DO - 10.1016/j.ces.2022.117429
M3 - 文章
SN - 0009-2509
VL - 251
JO - Chemical Engineering Science
JF - Chemical Engineering Science
M1 - 117429
ER -