Abstract
The interactive phenomena between a rotating arc and a premixed methane/air flame have been investigated. The effects of the rotating arc on the flame were observed: both lean and rich flammability limit was extended with the rotating arc on. More interestingly, the opposite interactions, i.e., the effects of the flame on the rotating arc, were also observed: the arc length, angular speed, and electrical characteristics are affected by the flame. An analysis of the optical emission spectra showed that the rotating arc generates chemically active species such as excited N2 molecules and O and H atoms. An analysis of the gas products indicated that the concentrations of the major gas products such as CO2, CO, and H2 were not significantly affected by the rotating arc, although the flammability limit are significantly extended. Unlike these major gas products, minor products like NOx emissions increased by an order of magnitude in the presence of a rotating arc under certain air/fuel conditions.
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Acknowledgments
This work is supported by the KIMM basic research program NK156B and the project “Ox and CO reduction with 3.5 ton/h burner aided by plasma” funded by KETEP. We are grateful for the financial support.
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Hwang, N., Lee, J., Lee, D.H. et al. Interactive Phenomena of a Rotating Arc and a Premixed CH4 Flame. Plasma Chem Plasma Process 32, 187–200 (2012). https://doi.org/10.1007/s11090-012-9349-0
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DOI: https://doi.org/10.1007/s11090-012-9349-0