[Table of Contents]

Plasma and Fusion Research

Volume 5, 010 (2010)

Regular Articles

Basic Study on the Generation of RF Plasmas in Premixed Oxy-combustion with Methane
Yugo OSAKA, Noriyuki KOBAYASHI1), M. A. RAZZAK2), Noriyasu OHNO1), Shuichi TAKAMURA3) and Yoshihiko UESUGI4)
Department of Chemical Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
1)
EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
2)
Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
3)
Department of Electrical and Electronics Engineering, Graduate School of Engineering, Aichi Institute of Technology, Yakusa-cho, Toyota 470-0392
4)
Department of Electrical and Electronic Engineering, Graduate School of Natural Science, Kanazawa University, Kakuma-cho,Kanazawa 920-1192, Japan
(Received 7 May 2009 / Accepted 1 December 2009 / Published 29 March 2010)

Abstract

Oxy-combustion generates a high temperature field (above 3000 K), which is applied to next generation power plants and high temperature industrial technologies because of N2 free processes. However, the combustion temperature is so high that the furnace wall may be fatally damaged. In addition, it is very difficult to control the heat flux and chemical species' concentrations because of rapid chemical reactions. We have developed a new method for controlling the flame by electromagnetic force on this field. In this paper, we experimentally investigated the power coupling between the premixed oxy-combustion with methane and radio frequency (RF) power through the induction coil. By optimizing the power coupling, we observed that the flame can absorb RF power up to 1.5 kW. Spectroscopic measurements also showed an increase in the emission intensity from OH radicals in the flame, indicating improved combustibility.

Keywords

oxy-combustion, plasma assisted combustion, RF inductive plasma

DOI: 10.1585/pfr.5.010

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This paper may be cited as follows:

Yugo OSAKA, Noriyuki KOBAYASHI, M. A. RAZZAK, Noriyasu OHNO, Shuichi TAKAMURA and Yoshihiko UESUGI, Plasma Fusion Res. 5, 010 (2010).