The transient phenomena of methane catalytic ignition assisted by hydrogen pre-reaction

H. W. Hsu, Y. C. Chao, J. Y. Chen

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper investigates the transient characteristics of hydrogen-assisted methane-air catalytic combustion by both experiments and numerical calculations. The ignition criterion curve and the interested phenomena of hydrogen-assisted methane catalytic ignition are obtained in this study. With H2 pre-reaction, the minimum CH4 concentration required for successful ignition decreases with the increasing content of H2. And based on the ignition delay time calculation in the catalyst channel and transient temperature measurements of surface and outlet gas phase, four ignition modes are revealed with three ignition regions as functions of hydrogen and methane volume concentrations along the ignition criterion curve. The evolution of hydrogen-assisted catalytic ignition of methane is dominated by the competition between surface and gas phase reaction and the abrupt increase temperature the ignition process.

Original languageEnglish
Publication statusPublished - 2007 Jan 1
Event6th Asia-Pacific Conference on Combustion, ASPACC 2007 - Nagoya, Japan
Duration: 2007 May 202007 May 23

Conference

Conference6th Asia-Pacific Conference on Combustion, ASPACC 2007
CountryJapan
CityNagoya
Period07-05-2007-05-23

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics

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