Methane/propane oxidation at high pressures: Experimental and detailed chemical kinetic modeling

    Authors

    E. L. Petersen; D. M. Kalitan; S. Simmons; G. Bourque; H. J. Curran;J. M. Simmie

    Comments

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    Abbreviated Journal Title

    Proc. Combust. Inst.

    Keywords

    ignition; methane; propane; shock tube; chemical kinetics; fuel blends; high pressure; REFLECTED SHOCK-WAVES; OXYGEN-ARGON MIXTURES; GAS-TURBINE COMBUSTOR; IGNITION DELAY TIMES; NATURAL-GAS; TEMPERATURE; CH3+O-2; MECHANISM; ETHANE; FUELS; Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering, ; Mechanical

    Abstract

    Shock tube experiments and chemical kinetic modeling were performed to further understand the ignition and oxidation kinetics of various methane-propane fuel blends at gas turbine pressures. Ignition delay times were obtained behind reflected shock waves for fuel mixtures consisting of CH4/C3H8 in ratios ranging from 90/10% to 60/40%. Equivalence ratios varied from lean (phi = 0.5), through stoichiometric to rich (phi = 3.0) at test pressures from 5.3 to 31.4 atm. These pressures and mixtures, in conjunction with test temperatures as low as 1042 K, cover a critical range of conditions relevant to practical turbines where few, if any, CH4/C3H8 prior data existed. A methane/propane oxidation mechanism was prepared to simulate the experimental results. It was found that the reactions involving CH3O, CH3O2, and CH3 + O-2/HO2 chemistry were very important in reproducing the correct kinetic behavior. (C) 2006 Published by Elsevier Inc. on behalf of The Combustion Institute.

    Journal Title

    Proceedings of the Combustion Institute

    Volume

    31

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    447

    Last Page

    454

    WOS Identifier

    WOS:000252858000041

    ISSN

    1540-7489

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