Numerical Simulation of the Thermal Conversion of Gaseous Products of Polyethylene Pyrolysis

Numerical simulation of thermal conversion of gaseous products of polyethylene pyrolysis (GPPE) is performed at atmospheric pressure in the temperature range of 700 to 1200 K. Initial conditions are taken from experimental data presented in the literature. Several detailed kinetic mechanisms (DKMs)...

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Published in:Russian journal of physical chemistry. B 2021-07, Vol.15 (4), p.678-684
Main Authors: Tereza, A. M., Agafonov, G. L., Anderzhanov, E. K., Medvedev, S. P.
Format: Article
Language:English
Subjects:
Aromatic compounds
Chemistry
Chemistry and Materials Science
Combustion
Conversion
Explosion
Initial conditions
Methane
Physical Chemistry
Polyethylene
Polyethylenes
Pyrolysis
Qualitative analysis
Shock Waves
Thermal simulation
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description Numerical simulation of thermal conversion of gaseous products of polyethylene pyrolysis (GPPE) is performed at atmospheric pressure in the temperature range of 700 to 1200 K. Initial conditions are taken from experimental data presented in the literature. Several detailed kinetic mechanisms (DKMs) are used to demonstrate that the amount of heat generated by GPPE conversion reactions drastically increases with consumption of C 2 + hydrocarbons. Thermal conversion generates methane and hydrogen as major products. The remaining products are various C 6 + aromatic compounds. Whereas the DKMs employed predict similar qualitative trends, the characteristic times of temperature rise obtained in the simulations differ significantly between the DKMs. It is shown that all DKMs predict similar methane and hydrogen yields and equal amounts of heat generated.
doi_str_mv 10.1134/S1990793121040266
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1990-7923
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subjects Aromatic compounds
Chemistry
Chemistry and Materials Science
Combustion
Conversion
Explosion
Initial conditions
Methane
Physical Chemistry
Polyethylene
Polyethylenes
Pyrolysis
Qualitative analysis
Shock Waves
Thermal simulation
title Numerical Simulation of the Thermal Conversion of Gaseous Products of Polyethylene Pyrolysis
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