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Pilot-Scale Experiment for Simultaneous Dioxin and NO x Removal from Garbage Incinerator Emissions Using the Pulse Corona Induced Plasma Chemical Process

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Abstract

A pilot-scale pulse corona induced plasma chemical process (PPCP) reactor for controlling gas-phase dioxins and NO x simultaneously is installed in a garbage incineration plant. The flow rate of the sampled flue gas is 5,000 Nm3/h (N: standard state) in maximum at the PPCP reactor, which consists of 22 wire-cylinder electrodes and is energized by a 50 kW nanosecond pulse high voltage generator. With an applied plasma energy density of 2.9–6.1 Wh/Nm3, the decomposition efficiency for dioxins is 75–84% based on TEQ (toxic equivalents); the conversion efficiency of NO to NO2 is ~93% at maximum. The flue gas treated by the PPCP reactor is introduced at a rate of 50 Nm3/h to a wet-type chemical reactor, which uses an aqueous solution of sodium sulfite (Na2SO3). More than 90% of NO x is reduced to nitrogen, with negligible byproducts such as NO2 − or NO3 − ions left in the solution.

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Acknowledgments

The authors sincerely thank Mr. K. Kitaura and K. Hayakawa (former graduate students of Osaka Prefecture University) for their support in the experiments. This study is partially supported by Grant-in-Aid of the Japan Society of Promotion of Science.

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Authors and Affiliations

  1. Department of Electrical and Electronic Systems Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka, 535-8585, Japan

    Keiichiro Yoshida

  2. Department of Electrical and Electronics Engineering, Tokyo City University, 1-28-1 Tamatsutsumi, Setagaya-ku, Tokyo, 158-8557, Japan

    Toshiaki Yamamoto

  3. Department of Mechanical Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531, Japan

    Tomoyuki Kuroki & Masaaki Okubo

Authors
  1. Keiichiro Yoshida
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  2. Toshiaki Yamamoto
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  3. Tomoyuki Kuroki
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  4. Masaaki Okubo
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Correspondence to Masaaki Okubo.

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Yoshida, K., Yamamoto, T., Kuroki, T. et al. Pilot-Scale Experiment for Simultaneous Dioxin and NO x Removal from Garbage Incinerator Emissions Using the Pulse Corona Induced Plasma Chemical Process. Plasma Chem Plasma Process 29, 373–386 (2009). https://doi.org/10.1007/s11090-009-9184-0

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  • DOI: https://doi.org/10.1007/s11090-009-9184-0

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