CFD modeling of the ethylene–vinyl acetate copolymerization autoclave reactor: Effects of comonomer ratio on reactor dynamics and copolymer properties

Shin, Sunkyu; Lee, Damin; Oh, Ji Ye; Kim, Young-Jo; Park, Myung-June; Lee, Won Bo

doi:10.1016/j.ces.2022.118430

Chemical Engineering Science

2023

DOI: 10.1016/j.ces.2022.118430

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CFD modeling of the ethylene–vinyl acetate copolymerization autoclave reactor: Effects of comonomer ratio on reactor dynamics and copolymer properties

Sunkyu Shin

Damin Lee

Ji Ye Oh

et al.

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2024

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Cited by 6 publications

References 33 publications

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Hot Spot Induced Thermal Runaway Map for Polymerization Reactors

Yoder,

Strasser,

Kacinski

et al. 2024

Macro Reaction Engineering

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Low‐Density Polyethylene (LDPE) reactors have the potential for rupture because of thermal runaway from auto‐accelerating chemistry. Pockets of unmixed, highly reactive, LDPE constituents, called hot spots, are often generated by conditions within the reactor and are the main source of thermal runaway. Because of this, there is a need to define thresholds of hot spot conditions that produce runaway. Computational Fluid Dynamics is used to study an isolated LDPE sphere with varying initial temperature, initial catalyst concentration, and volume to determine which combinations promote thermal runaway. It is found that increasing both initial temperature and initial catalyst concentration increased thermal runaway likelihood, while, counter‐intuitively, hot spot volume has no effect. An LDPE runaway map is provided to quantify the combinations that result in safe reactor operation. This allows manufacturers to make more informed control actions and to determine safe reactor conditions based on local mixture composition and temperature alone.

show abstract

Hot Spot Induced Thermal Runaway Map for Polymerization Reactors

Yoder,

Strasser,

Kacinski

et al. 2024

Macro Reaction Engineering

View full text Add to dashboard Cite

show abstract

Grid anisotropy of propagation fronts in cellular automata and its reduction methods

Ai,

Zhai,

et al. 2024

Applied Mathematics and Computation

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Surrogate-model-based optimization of a nonideal polymerization reactor for producing tailored molecular weight distribution

Shin,

Lee,

Park

2024

Chemical Engineering Journal

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CFD modeling of the ethylene–vinyl acetate copolymerization autoclave reactor: Effects of comonomer ratio on reactor dynamics and copolymer properties

Cited by 6 publications

References 33 publications

Hot Spot Induced Thermal Runaway Map for Polymerization Reactors

Hot Spot Induced Thermal Runaway Map for Polymerization Reactors

Grid anisotropy of propagation fronts in cellular automata and its reduction methods

Surrogate-model-based optimization of a nonideal polymerization reactor for producing tailored molecular weight distribution

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