Experimental study on polymer pyrolysis in high-temperature air diluted by H 2O and CO 2 using stagnation-point flow

Yasuhiro Ogami, Makoto Mori, Kentaro Yoshinaga, Hideaki Kobayashi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Combustion experiments were performed for polyethylene (PE) in stagnation-point flow to investigate the fundamental characteristics of PE in high-temperature air combustion (HiTAC). Air diluted by nitrogen, water vapor, and carbon dioxide was tested as the oxidizer, and the oxidizer temperature was varied from 300K to 773K in order to investigate the effect of the dilution and temperature on the regression rate, the extinction limit, and the sooting limit of PE. The kinetic parameters of PE pyrolysis under the combustion conditions were estimated from the regression rate experimental data using a new method that combines experiments and numerical simulations. It was found that the previously reported kinetic parameters obtained with thermal gravimetric analysis (TGA) were much smaller than those obtained in this study. It was also found that the kinetic parameters varied when a different dilution gas was used, indicating that PE pyrolysis is affected by the composition of oxidizer.

Original languageEnglish
Pages (from-to)735-749
Number of pages15
JournalCombustion science and technology
Volume184
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

Keywords

  • High-temperature air combustion
  • Polyethylene
  • Pyrolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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