TY - JOUR

T1 - A sequential lumped kinetic modelling approach for the co-pyrolysis of plastic mixtures with a heavy refinery intermediate product in a tubular reactor

AU - Lorbach, Sebastian-Mark

AU - Lechleitner, Andreas

AU - Schubert, Teresa

AU - Lehner, Markus

N1 - Publisher Copyright: © 2024 The Royal Society of Chemistry.

PY - 2024/4/10

Y1 - 2024/4/10

N2 - The knowledge of reaction rates and reaction pathways is essential for the upscaling of laboratory- and pilot-sized plants to full scale industrial processes. Over the last decades lumped kinetic modelling became the standard modelling approach for cracking reactions of hydrocarbon blends. In this paper a sequential nine-lump kinetic model is developed. The model allows for a fully automatic calculation of the kinetic parameters and efficient implementation in process simulation software like PetroSim. The kinetic parameters were calculated using experiments in a laboratory sized tubular reactor with a mass throughput between 600 g h−1 and 2500 g h−1 and temperatures between 440 °C and 530 °C at a pressure of 15 bar. A feedstock of 30 wt% plastic in different blends (PP, LDPE, HDPE) and 70 wt% carrier medium, a heavy refinery intermediate product, was used for the fitting and evaluation of the kinetic model. The results were evaluated with a set of experimental data, independent from the set used for the fitting. A residual analysis shows that the model has good predictive capabilities and can be used to simulate the cracking reaction of plastics in a plug flow reactor over a broad range of operating conditions.

AB - The knowledge of reaction rates and reaction pathways is essential for the upscaling of laboratory- and pilot-sized plants to full scale industrial processes. Over the last decades lumped kinetic modelling became the standard modelling approach for cracking reactions of hydrocarbon blends. In this paper a sequential nine-lump kinetic model is developed. The model allows for a fully automatic calculation of the kinetic parameters and efficient implementation in process simulation software like PetroSim. The kinetic parameters were calculated using experiments in a laboratory sized tubular reactor with a mass throughput between 600 g h−1 and 2500 g h−1 and temperatures between 440 °C and 530 °C at a pressure of 15 bar. A feedstock of 30 wt% plastic in different blends (PP, LDPE, HDPE) and 70 wt% carrier medium, a heavy refinery intermediate product, was used for the fitting and evaluation of the kinetic model. The results were evaluated with a set of experimental data, independent from the set used for the fitting. A residual analysis shows that the model has good predictive capabilities and can be used to simulate the cracking reaction of plastics in a plug flow reactor over a broad range of operating conditions.

KW - chemical recycling

KW - plastic waste

KW - plastic to oil

KW - feedstock recycling

KW - co-pyrolysis

UR - https://pureadmin.unileoben.ac.at/portal/en/publications/a-sequential-lumped-kinetic-modelling-approach-for-the-copyrolysis-of-plastic-mixtures-with-a-heavy-refinery-intermediate-product-in-a-tubular-reactor(1854599c-3a87-4146-acb2-872f7c739002).html

UR - http://www.scopus.com/inward/record.url?scp=85190304010&partnerID=8YFLogxK

U2 - 10.1039/D4RE00075G

DO - 10.1039/D4RE00075G

M3 - Article

VL - 9.2024

SP - 1883

EP - 1895

JO - Reaction chemistry & engineering

JF - Reaction chemistry & engineering

SN - 2058-9883

IS - 7

ER -