A kinetic model for polystyrene (PS) pyrolysis reaction |
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Authors: | Hyun-Seob?Song Joo?Sung?Lee Email author" target="_blank">Jae?Chun?HyunEmail author |
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Affiliation: | (1) Applied Rheology Center (ARC), Department of Chemical and Biological Engineering, Korea University, Anam-dong, Sungbuk-gu, 136-701 Seoul, Korea;(2) Present address: Process Technology Research & Development, LG, Chem/Research Park, 104-1 Moonji-dong, Yuseong-gu, 305-380 Daejeon, Korea |
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Abstract: | A mathematical model for the pyrolysis reaction of polystyrene (PS) in a semi-batch reactor has been presented. The thermal
degradation of PS was flexibly modeled by a combination of random and specific chain-end scissions. Numerical simulation was
used to investigate the effect of operating conditions on the PS products spectrum, the results of which were validated by
the experimental data. It was found that as the reaction temperature increased (decreased), the monomer fraction in the products
became lower (higher) while the trimer higher (lower). No significant variation in the product composition was, however, observed
while constant temperature was maintained. These results indicate the reaction temperature is an effective manipulated variable
for the control of products composition of PS pyrolysis. The calculation of the optimum temperature trajectories through the
optimization study can thus be of interest for achieving productivity enhancement in plastics pyrolysis processes.
This paper is dedicated to Professor Dong Sup Doh on the occasion of his retirement from Korea University. |
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Keywords: | Polystyrene (PS) Pyrolysis Temperature Effect Population Balances Batch Reactor |
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