Gas‐Phase Polyethylene Reactors—A Critical Review of Modeling Approaches

RF Alves, T Casalini, G Storti… - Macromolecular …, 2021 - Wiley Online Library
Different approaches to modeling the gas phase polymerization of ethylene that have been
considered in the literature are reviewed. It is shown that while simple, well‐mixed models …

Important mesoscale phenomena in gas phase fluidized bed ethylene polymerization

J Sun, H Wang, S Tian, X Fan, Q Shi, Y Liu, X Hu… - Particuology, 2020 - Elsevier
Gas phase fluidized bed processes have been widely applied to polyethylene production. In
these processes, the flow, mass transfer, and reaction rate on the microscale and …

Modeling the change in particle size distribution in a gas-solid fluidized bed due to particle attrition using a hybrid artificial neural network-genetic algorithm approach

AAK Farizhandi, H Zhao, R Lau - Chemical Engineering Science, 2016 - Elsevier
Particle size distribution (PSD) is an important parameter in gas-solid fluidized bed. The
change in PSD due to particle attrition can affect the long-term performance of fluidized bed …

Thermal-stability analysis of ethylene-polymerization fluidized-bed reactors under condensed-mode operation through a TPM− PBM integrated model

X Fan, J Sun, Y Yang, J Wang, Z Huang… - Industrial & …, 2019 - ACS Publications
Thermal stability is a crucial issue for fluidized-bed ethylene-polymerization reactors,
especially when the particle-aggregation probability increases as a result of the high …

Two-stage modeling strategy for industrial fluidized bed reactors in gas-phase ethylene polymerization processes

T Kusolsongtawee, P Bumroongsri - Chemical Engineering Research and …, 2018 - Elsevier
Fluidized bed reactor is one of the main units in gas-phase ethylene polymerization
processes. Due to the complexity in the polymerization kinetics, hydrodynamic behavior and …

Study on Preparation of Crude ZrCl4 by Industrial Desiliconization Zirconia with Carbochlorination Based on Thermodynamics, Dynamics and Neural Network

Z Yang, M Mu, J Wang, J Chen, Q Li, G Yin, G Qi, Q Wu - JOM, 2024 - Springer
To optimize the operating conditions of the industrial fluidized bed reactor with a daily output
of 3 tons of crude ZrCl4, crude ZrCl4 was prepared by carbochlorination using …

[PDF][PDF] Pseudo-homogeneous CSTR Simulation of a Fluidized Bed Reactor operating in condensed-mode including Sanchez-Lacombe n-hexane co-solubility effect …

P Rainhoa, A Alizadehb, M Ribeiroc, TF Mckennab - J. Eng. Rookies, 2014 - Citeseer
This work explores the impact of the inert condensing agent (ICA) n-hexane in the
production of Polyethylene via gasphase condensed mode bed reactor. The gas loaded to …

Model predictive control of a polyolefin reactor

K Linnestad - 2015 - ntnuopen.ntnu.no
Two models for the copolymerization of propylene and ethylene in a fluidized bed reactor
(FBR) were developed. A simple model for control; and a more advanced model which …

Effect of induced condensing agents on ethylene polymerization in gas-phase reactors

AB Mrad - 2020 - theses.hal.science
The prediction of the impact of induced condensing agents (ICAs) during ethylene
polymerization in gas phase reactors is studied. The Sanchez-Lacombe Equation of State …

Surrogate modeling applications in chemical and biomedical processes

AA Kazemzadeh Farizhandi - 2017 - dr.ntu.edu.sg
Surrogate modeling is an efficient alternative for computation-intensive process simulations
in engineering problems. Surrogate model is developed using experimental or computer …