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Reductions of PAH and Soot by Center Air Injection

Department of Mechanical Science and Engineering, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
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Environments 2014, 1(1), 42-53; https://doi.org/10.3390/environments1010042
Received: 16 May 2014 / Revised: 1 July 2014 / Accepted: 8 July 2014 / Published: 15 July 2014
In this study, to reduce the amount of pollutant PAH and soot in the flame, we examined the burner system equipped with a center air injection. For this purpose, by using PAH-LIF and soot LII, we evaluated relative PAH and soot amounts in both the triple port burner and the conventional co-axial burner (double port burner) to discuss effects of center air injection on the formation of PAH and soot. The fuel was propane. In the triple port burner, two different blue flames are observed near the burner rim, followed by bright luminous flames with soot. The flame length is longer when the fuel flow velocity is increased. On the other hand, the flame length is shorter with an increase in internal air flow velocity. As for PAH and soot, these amounts of the triple port burner are much smaller than those of the double port burner. For the triple port burner, due to the center air injection, the fuel consumption occurs in both inner and outer flames. On the other hand, for the double port burner, the oxygen is supplied from one side air, and as a result, the fuel consumption rate is relatively lower. Hence, by the center air injection, the fuel consumption is largely accelerated, resulting in the reduction of PAH and soot. View Full-Text
Keywords: burner; air pollution; PAH; soot; fuel consumption burner; air pollution; PAH; soot; fuel consumption
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Yamamoto, K.; Takemoto, M. Reductions of PAH and Soot by Center Air Injection. Environments 2014, 1, 42-53.

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