Title

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

Authors

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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