Explosion limits of H2/CH4/O2 Mixtures: Analyticity and dominant kinetics

Wenkai Liang, Zirui Liu, Chung K. Law

Research output: Contribution to conferencePaper

Abstract

The pressure-Temperature explosion limits of H2/CH4/O2 mixtures were analyzed computationally and analytically. It is shown that, with the addition of about 5% of H2 to the mixture, the explosion limit evolves from being monotonic to the non-monotonic Z-shaped response characteristic of H2/O2/ explosions. Such transition is much less sensitive compared with the H2//CO/O2 system, which is explained by the different response of the kinetic parameters corresponding to O and OH radical competitions by H2 and CH4. Further eigenvalue analysis with appropriate quasi-steady state simplifications leads to accurate analytic solutions for the explosion limits, with explicit expressions for the controlling pathways for different H2 and CH4 concentrations.

Original languageEnglish (US)
StatePublished - Jan 1 2018
Event2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018 - State College, United States
Duration: Mar 4 2018Mar 7 2018

Other

Other2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018
CountryUnited States
CityState College
Period3/4/183/7/18

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)

Keywords

  • Eigenvalue analysis.
  • Explosion limits
  • Syngas
  • methane

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    Liang, W., Liu, Z., & Law, C. K. (2018). Explosion limits of H2/CH4/O2 Mixtures: Analyticity and dominant kinetics. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.