Modelling of carbon tetrachloride decomposition in oxidative RF thermal plasma

Tamás Kovács, T. Turányi, Katalin Foglein, J. Szépvölgyi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Decomposition of carbon tetrachloride in a RF thermal plasma reactor was investigated in oxygen-argon atmosphere. The net conversion of CCl4 and the main products of decomposition were determined by GC-MS (Gas Chromatographic Mass Spectroscopy) analysis of the exhaust gas. Temperature and flow profiles had been determined in computer simulations and were used for concentration calculations. Concentration profiles of the species along the axis of the reactor were calculated using a newly developed chemical kinetic mechanism, containing 34 species and 134 irreversible reaction steps. Simulations showed that all carbon tetrachloride decomposed within a few microseconds. However, CCl4 was partly recombined from its decomposition products. Calculations predicted 97.9% net conversion of carbon tetrachloride, which was close to the experimentally determined value of 92.5%. This means that in RF thermal plasma reactor much less CCL4 was reconstructed in oxidative environment than using an oxygen-free mixture, where the net conversion had been determined to be 61%. The kinetic mechanism could be reduced to 55 irreversible reaction steps of 26 species, while the simulated concentrations of the important species were within 0.1% identical compared to that of the complete mechanism.

Original languageEnglish
Pages (from-to)293-308
Number of pages16
JournalPlasma Chemistry and Plasma Processing
Volume26
Issue number3
DOIs
Publication statusPublished - Jun 2006

Fingerprint

Plasma Gases
Carbon tetrachloride
Carbon Tetrachloride
thermal plasmas
carbon tetrachloride
reactors
Decomposition
Plasmas
decomposition
argon-oxygen atmospheres
gas spectroscopy
Oxygen
exhaust gases
Argon
products
profiles
Exhaust gases
Reaction kinetics
temperature profiles
reaction kinetics

Keywords

  • Carbon tetrachloride
  • Decomposition
  • Modelling
  • Oxygen
  • Thermal plasma

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

Modelling of carbon tetrachloride decomposition in oxidative RF thermal plasma. / Kovács, Tamás; Turányi, T.; Foglein, Katalin; Szépvölgyi, J.

In: Plasma Chemistry and Plasma Processing, Vol. 26, No. 3, 06.2006, p. 293-308.

Research output: Contribution to journalArticle

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