Title: NOx formation by steam injection using detailed chemical kinetics

Authors: H. Yamashita, D. Zhao, S.N. Danov, T. Furuhata, N. Arai

Addresses: Department of Mechanical Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan. Department of Mechanical Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan. Research Center for Advanced Energy Conversion, Nagoya University, Chikusa-ku, Nagoya, 464 V8603, Japan. Research Center for Advanced Energy Conversion, Nagoya University, Chikusa-ku, Nagoya, 464 V8603, Japan. Research Center for Advanced Energy Conversion, Nagoya University, Chikusa-ku, Nagoya, 464 V8603, Japan

Abstract: In order to improve thermal efficiency of gas turbine system and better control NOx emission, the injection of steam into a gas turbine combustor has been employed. This study has used both chemical equilibrium calculations and the counterflow diffusion flame calculations of methane-air flame aiming at the elucidation of the NOx reduction mechanism due to the steam injection. The influence of the equivalence ratios, the amount of steam and method of injection, the influence of the temperature of the preheated air and fuel has been also investigated. In this study, the GRI-Mech was employed for modelling the chemical reactions.

Keywords: numerical analysis; NOx reduction; counterflow diffusion flame; steam injection; detailed chemical kinetics.

DOI: 10.1504/IJGEI.2001.000903

International Journal of Global Energy Issues, 2001 Vol.15 No.3/4, pp.310-322

Available online: 18 Aug 2003 *

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