Petrochemical feedstock by thermal cracking of plastic waste

András Angyal, N. Miskolczi, L. Bartha

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The thermal cracking is one of the possible ways to obtain petrochemical feedstock from polymer wastes. The properties of the cracking products depend mainly on the type of the raw material. In this study the degradation of different mixtures of polymer wastes (polypropylene and polystyrene) were investigated in a horizontal tube reactor. Temperature of 510-520 °C and residence time of 15-30 min were used. The effects of the concentration of polystyrene on the yields and structure of products were also studied. Moreover, the interaction between the polymers during the pyrolysis was investigated. The products of the thermal cracking were analyzed by gas-chromatography, infrared spectroscopy and different standardized and non-standardized methods. It was found, that the concentration of polystyrene significantly affected both the quantity and quality of degradation products. It was also observed that the presence of the polystyrene in the raw material increased the reaction rate coefficient, and enhanced the degradation rate of polypropylene. By higher concentration of polystyrene in raw materials, the yield of light products considerably increased, furthermore, in the naphtha-like fraction the concentration of aromatics also increased. The characteristics of the products were changed with the polystyrene content in the raw materials. The liquid products had advantageous properties for further utilization as fuel like or petrochemical feedstock applications.

Original languageEnglish
Pages (from-to)409-414
Number of pages6
JournalJournal of Analytical and Applied Pyrolysis
Volume79
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - May 2007

Fingerprint

Polystyrenes
Petrochemicals
Feedstocks
plastics
polystyrene
Plastics
Raw materials
products
Polymers
Polypropylenes
Degradation
degradation
polypropylene
polymers
Naphthas
Gas chromatography
Reaction rates
gas chromatography
Hot Temperature
Infrared spectroscopy

Keywords

  • Mixed plastic waste
  • Reaction rate
  • Thermal degradation
  • Tube reactor
  • Utilization

ASJC Scopus subject areas

  • Analytical Chemistry
  • Physical and Theoretical Chemistry

Cite this

Petrochemical feedstock by thermal cracking of plastic waste. / Angyal, András; Miskolczi, N.; Bartha, L.

In: Journal of Analytical and Applied Pyrolysis, Vol. 79, No. 1-2 SPEC. ISS., 05.2007, p. 409-414.

Research output: Contribution to journalArticle

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