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The development and validation of a chemical kinetic model for anisole, a compound to represent biomass pyrolysis fuels

Wagnon, Scott W.; Thion, Sébastien; Nilsson, Elna J.K. LU ; Mehl, Marco; Serinyel, Zeynep; Zhang, Kuiwen; Dagaut, Phillippe; Konnov, Alexander A. LU ; Dayma, Guillaume and Pitz, William J. (2017) 10th U.S. National Combustion Meeting
Abstract

Lignocellulosic biomass is a promising alternative fuel source which can promote energy security, reduce greenhouse gas emissions, and minimize fuel consumption when paired with advanced combustion strategies. Pyrolysis is used to convert lignocellulosic biomass into a complex mixture of phenolic-rich species that can be used in a transportation fuel. Anisole (or methoxybenzene) can be used as a surrogate to represent these phenolic-rich species. Anisole also has attractive properties as a fuel component for use in advanced spark-ignition engines because of its high blending research octane number of 120. Presented in the current work are new measurements of laminar burning velocities, jet-stirred reactor (JSR) speciation of... (More)

Lignocellulosic biomass is a promising alternative fuel source which can promote energy security, reduce greenhouse gas emissions, and minimize fuel consumption when paired with advanced combustion strategies. Pyrolysis is used to convert lignocellulosic biomass into a complex mixture of phenolic-rich species that can be used in a transportation fuel. Anisole (or methoxybenzene) can be used as a surrogate to represent these phenolic-rich species. Anisole also has attractive properties as a fuel component for use in advanced spark-ignition engines because of its high blending research octane number of 120. Presented in the current work are new measurements of laminar burning velocities, jet-stirred reactor (JSR) speciation of anisole/O2/N2 mixtures, and the development and validation of a detailed chemical kinetic mechanism for anisole. Homogeneous, steady state, fixed temperature, perfectly stirred reactor CHEMKIN simulations were used to validate the mechanism against the current JSR measurements and published JSR experiments from CNRS-Nancy. Pyrolysis and oxidation simulations were based on the experimental reactant compositions and thermodynamic state conditions including P = 1 bar and T = 675-1275 K. The oxidation compositions studied in this work span fuel lean (φ = 0.5), stoichiometric, and fuel rich (φ = 2.0) equivalence ratios. Premixed laminar burning velocities were measured on a heat flux stabilized burner at an unburnt T = 358 K, P = 1 bar and simulated using the CHEMKIN premixed laminar flame-speed module. Under pyrolysis and oxidative conditions, unimolecular decomposition of anisole to phenoxy radicals and methyl radicals was found to be important due to the relatively low bond strength between the oxygen and methyl group, ~65 kcal-mole-1

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author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
Biomass, Burning velocity, Lignin, Methoxybenzene
conference name
10th U.S. National Combustion Meeting
conference location
College Park, United States
conference dates
2017-04-23 - 2017-04-26
external identifiers
  • scopus:85049085889
language
English
LU publication?
yes
id
b4af9734-4d52-4460-a6a6-c3babc85e5fd
date added to LUP
2018-07-09 14:14:11
date last changed
2018-07-09 14:14:11
@misc{b4af9734-4d52-4460-a6a6-c3babc85e5fd,
  abstract     = {<p>Lignocellulosic biomass is a promising alternative fuel source which can promote energy security, reduce greenhouse gas emissions, and minimize fuel consumption when paired with advanced combustion strategies. Pyrolysis is used to convert lignocellulosic biomass into a complex mixture of phenolic-rich species that can be used in a transportation fuel. Anisole (or methoxybenzene) can be used as a surrogate to represent these phenolic-rich species. Anisole also has attractive properties as a fuel component for use in advanced spark-ignition engines because of its high blending research octane number of 120. Presented in the current work are new measurements of laminar burning velocities, jet-stirred reactor (JSR) speciation of anisole/O2/N2 mixtures, and the development and validation of a detailed chemical kinetic mechanism for anisole. Homogeneous, steady state, fixed temperature, perfectly stirred reactor CHEMKIN simulations were used to validate the mechanism against the current JSR measurements and published JSR experiments from CNRS-Nancy. Pyrolysis and oxidation simulations were based on the experimental reactant compositions and thermodynamic state conditions including P = 1 bar and T = 675-1275 K. The oxidation compositions studied in this work span fuel lean (φ = 0.5), stoichiometric, and fuel rich (φ = 2.0) equivalence ratios. Premixed laminar burning velocities were measured on a heat flux stabilized burner at an unburnt T = 358 K, P = 1 bar and simulated using the CHEMKIN premixed laminar flame-speed module. Under pyrolysis and oxidative conditions, unimolecular decomposition of anisole to phenoxy radicals and methyl radicals was found to be important due to the relatively low bond strength between the oxygen and methyl group, ~65 kcal-mole<sup>-1</sup> </p>},
  author       = {Wagnon, Scott W. and Thion, Sébastien and Nilsson, Elna J.K. and Mehl, Marco and Serinyel, Zeynep and Zhang, Kuiwen and Dagaut, Phillippe and Konnov, Alexander A. and Dayma, Guillaume and Pitz, William J.},
  keyword      = {Biomass,Burning velocity,Lignin,Methoxybenzene},
  language     = {eng},
  location     = {College Park, United States},
  month        = {01},
  title        = {The development and validation of a chemical kinetic model for anisole, a compound to represent biomass pyrolysis fuels},
  year         = {2017},
}