A preliminary kinetic model of chromium in a hydrogen/air flame

S. Yu, I. M. Kennedy

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Chromium has been indentified as a carcinogenic metal. Incineration is the useful method for disposal of toxic chromium hazard waste and a chromium kinetic model in a flame is very important to study chromium oxidation. Chromium chemical kinetics over a range of temperatures of a hydrogen/air flame is proposed. Nine chromium compounds and fifty-eight reversible chemical reactions were considered. The forward reaction rates are calculated based on the molecular collision approach and Arrhenius's Law. The backward reaction rates were calculated according to forward reaction rates, the equilibrium constants and chemical thermodynamics. The kinetic model is verified for two premixed equilibrium cases and is tested for a hydrogen/air diffusion flame. A chemical flux analysis is employed to reveal the significant chemical reactions. The results show that the kinetic model is precise enough and the chromium kinetics play an important role in the Hydrogen/Air diffusion flame.

Original languageEnglish (US)
Pages (from-to)35-45
Number of pages11
JournalCombustion Science and Technology
Volume160
Issue number1-6
StatePublished - 2000
Externally publishedYes

Keywords

  • Chemical kinetics
  • Chromium
  • Hazard waste
  • Hydrogen/air flame

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Engineering (miscellaneous)

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