Simplified dynamic simulation model of plastic waste pyrolysis in laboratory and pilot scale tubular reactor

B. Csukás, M. Varga, N. Miskolczi, S. Balogh, A. Angyal, L. Bartha

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Thermal pyrolysis of plastic wastes in tubular reactor has been studied with Direct Computer Mapping based simulation methodology, combined with genetic algorithm. Degradation process was carried out in laboratory and pilot scale tubular reactor. The investigated pyrolysis temperature range was 465-545°C, and raw material feeding rate was between 6 and 20 g/min. A dynamic simulation model has been developed based on a four-step degradation scheme, considering four cracking product fractions (gas, naphtha, middle distillate and heavy oil) and their hydrocarbon composition (paraffin, olefin and aromatic). A collaborating genetic algorithm was used for the identification of kinetic and stoichiometric model parameters. Having analyzed the identification results we concluded that some of the stoichiometric parameters, moreover all of the kinetic parameters and vapour/liquid phase ratios were independent from the reaction parameters, however they depend on the quality of raw material. The temperature and feeding rate dependency of the model were considered by two calculated parameters (pLiq, pAro). According to the investigations, the rate determining factor of the degradation process is the effectively utilized enthalpy resulting from the heat transfer through the wall of the equipment. The simplified dynamic simulation model can support the scale-up procedure of the pyrolysis technology.

Original languageEnglish
Pages (from-to)186-200
Number of pages15
JournalFuel Processing Technology
Volume106
DOIs
Publication statusPublished - Feb 2013

Fingerprint

Pyrolysis
Plastics
Computer simulation
Degradation
Identification (control systems)
Raw materials
Genetic algorithms
Mineral Oil
Naphthas
Alkenes
Kinetic parameters
Paraffin
Paraffins
Olefins
Enthalpy
Crude oil
Gases
Hydrocarbons
Vapors
Heat transfer

Keywords

  • Dynamic simulation
  • Genetic algorithm
  • Plastic (polyethylene) wastes
  • Pyrolysis
  • Tubular reactor

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)

Cite this

Simplified dynamic simulation model of plastic waste pyrolysis in laboratory and pilot scale tubular reactor. / Csukás, B.; Varga, M.; Miskolczi, N.; Balogh, S.; Angyal, A.; Bartha, L.

In: Fuel Processing Technology, Vol. 106, 02.2013, p. 186-200.

Research output: Contribution to journalArticle

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