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Experimental and modeling study of methyl cyclohexane pyrolysis and oxidation
J P Orme1, H J Curran, J M Simmie
1Chemistry Department, National University of Ireland, Galway, Ireland.
This study investigates methylcyclohexane oxidation, a key naphthene, using high-temperature shock tube experiments. Results enhance understanding of cyclic hydrocarbon combustion chemistry.
Area of Science:
- Combustion Chemistry
- Chemical Kinetics
- Petroleum Engineering
Background:
- Combustion chemistry of aliphatic hydrocarbons is well-understood.
- Oxidation of cyclic hydrocarbons, such as naphthenes, is less studied.
- Methylcyclohexane is a representative cyclic hydrocarbon relevant to fuels.
Purpose of the Study:
- To deepen the understanding of naphthene combustion chemistry.
- To investigate the oxidation of methylcyclohexane under high-temperature conditions.
- To provide experimental data for validating kinetic models.
Main Methods:
- High-temperature shock tube experiments were conducted.
- Ignition delay times were measured for methylcyclohexane/oxygen mixtures.
- Experiments covered temperatures from 1200-2100 K and pressures of 1.0-4.0 atm.
Main Results:
- Experimental data on methylcyclohexane ignition delay times were obtained.
- Data spans various equivalence ratios (phi=0.5, 1.0, 2.0).
- A detailed chemical kinetic mechanism was developed and showed good agreement with experimental results.
Conclusions:
- The study provides crucial experimental data for methylcyclohexane oxidation.
- The developed kinetic mechanism accurately simulates the observed combustion behavior.
- Findings contribute to a better understanding of cyclic hydrocarbon combustion.
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