Condensed mode cooling of ethylene polymerization in fluidized bed reactors

TFL McKenna - Macromolecular Reaction Engineering, 2019 - Wiley Online Library
This review gives an overview of the evolution of the technology of condensed mode
cooling, primarily for the case of ethylene polymerization on supported catalysts in fluidized …

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 …

Modelling of condensed mode cooling during the polymerization of ethylene in fluidized bed reactors

RF Alves, TFL McKenna - Industrial & Engineering Chemistry …, 2021 - ACS Publications
A compartmentalized reactor model has been developed to simulate the impact of running a
fluidized bed reactor for the gas-phase production of ethylene in condensed mode …

Modeling condensed mode operation for ethylene polymerization: part III. Mass and heat transfer

A Alizadeh, F Sharif, M Ebrahimi… - Industrial & …, 2018 - ACS Publications
The polymer flow model is employed to predict the transient behavior of the concentration
and temperature profiles within the growing particles during gas-phase ethylene …

Systematic Comparison of Slurry and Gas‐Phase Polymerization of Ethylene: Part I Thermodynamic Effects

A Alizadeh, V Touloupidis… - Macromolecular Reaction …, 2021 - Wiley Online Library
Abstract The Sanchez–Lacombe model is used to investigate the multiphase and
multicomponent thermodynamic equilibrium during ethylene polymerization and ethylene/1 …

Machine learning techniques for the prediction of polymerization kinetics and polymer properties

NB Ishola, TFL McKenna - The Canadian Journal of Chemical …, 2024 - Wiley Online Library
In the current study, the ability of two data‐driven machine learning tools, the extreme
learning machine (ELM) and the adaptive neuro‐fuzzy inference system (ANFIS), to predict …

Particle agglomeration and inhibition method in the fluidized pyrolysis reaction of waste resin

C Ren, P Zhang, Q Song, Z Huang, Y Yang… - Chinese Journal of …, 2024 - Elsevier
This work investigated the pyrolysis reaction of waste resin in a fluidized bed reactor. It was
found that the pyrolysis-generated ash would adhere to the surface of ceramic particles …

Assessing operational stability in condensed-mode fluidized bed reactor for linear low density polyethylene production: Insights from a thermoregulating water valve …

Y Liu - Journal of Elastomers & Plastics, 2024 - journals.sagepub.com
The reliability of thermal regulation systems is crucial for ensuring the stability of condensed-
mode gas-phase fluidized bed reactors (FBRs) used in the production of linear low-density …

[PDF][PDF] 持液颗粒聚合: 一种新型环境下的乙烯/α-烯烃反应

胡晓波, 孙婧元, 蒋斌波, 王靖岱, 阳永荣 - 高分子学报, 2021 - gfzxb.org
摘要通过改变乙烯/1-己烯共聚合反应中冷凝剂正己烷的含量, 建立了纯气相, 贫己烷和富己烷3
种聚合环境, 结合共单体效应和共溶效应的作用机制, 分析了3 种聚合环境下的聚合反应 …

Effect of condensable materials during the gas phase polymerization of ethylene on supported catalysts

FN de Andrade - 2019 - theses.hal.science
Fluidized bed reactors (FBR) are the only commercially viable technology for the production
of polyethylene in the gas phase since the polymerization is highly exothermic and the FBR …