Measurement and correlation of laminar flame speeds of CO and C2 hydrocarbons with hydrogen addition at atmospheric and elevated pressures

Fujia Wu, Andrew P. Kelley, Chenglong Tang, Delin Zhu, Chung K. Law

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

The laminar flame speeds of mixtures of ethane, ethylene, acetylene, and carbon monoxide with small amount of hydrogen addition at atmospheric and elevated pressures were experimentally and computationally determined. It was found that the approximate linear correlation identified previously between the laminar flame speeds and an appropriate definition of the amount of hydrogen addition for methane, propane and n-butane at atmospheric pressure also largely applies to ethane, ethylene, and acetylene at atmospheric as well as elevated pressures. The linear correlation, however, does not hold for carbon monoxide, at all pressures, due to the strong catalytic effect of hydrogen on the oxidation of carbon monoxide. A mechanistic analysis shows that both the Arrhenius and diffusive contributions to the laminar flame speed are nearly linear functions of the hydrogen addition, which explains this overall approximate linear correlation.

Original languageEnglish (US)
Pages (from-to)13171-13180
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number20
DOIs
StatePublished - Oct 1 2011

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Keywords

  • Elevated pressure combustion
  • Hydrogen addition
  • Laminar flame speeds

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