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High Reduction Efficiencies of Adsorbed NO x in Pilot-Scale Aftertreatment Using Nonthermal Plasma in Marine Diesel-Engine Exhaust Gas

Author

Listed:
  • Takuya Kuwahara

    (Department of Mechanical Engineering, Nippon Institute of Technology, 4-1 Gakuendai, Miyashiro-machi, Minamisaitama, Saitama 345-8501, Japan)

  • Keiichiro Yoshida

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

  • Tomoyuki Kuroki

    (Department of Mechanical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Japan)

  • Kenichi Hanamoto

    (Daihatsu Diesel MFG. Co., Ltd., 45 Amura-cho, Moriyama city, Shiga 524-0035, Japan)

  • Kazutoshi Sato

    (Daihatsu Diesel MFG. Co., Ltd., 45 Amura-cho, Moriyama city, Shiga 524-0035, Japan)

  • Masaaki Okubo

    (Department of Mechanical Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Japan)

Abstract

An efficient NO x reduction aftertreatment technology for a marine diesel engine that combines nonthermal plasma (NTP) and NO x adsorption/desorption is investigated. The aftertreatment technology can also treat particulate matter using a diesel particulate filter and regenerate it via NTP-induced ozone. In this study, the NO x reduction energy efficiency is investigated. The investigated marine diesel engine generates 1 MW of output power at 100% engine load. NO x reduction is performed by repeating adsorption/desorption processes with NO x adsorbents and NO x reduction using NTP. Considering practical use, experiments are performed for a larger number of cycles compared with our previous study; the amount of adsorbent used is 80 kg. The relationship between the mass of desorbed NO x and the energy efficiency of NO x reduction via NTP is established. This aftertreatment has a high reduction efficiency of 71% via NTP and a high energy efficiency of 115 g(NO 2 )/kWh for a discharge power of 12.0 kW.

Suggested Citation

  • Takuya Kuwahara & Keiichiro Yoshida & Tomoyuki Kuroki & Kenichi Hanamoto & Kazutoshi Sato & Masaaki Okubo, 2019. "High Reduction Efficiencies of Adsorbed NO x in Pilot-Scale Aftertreatment Using Nonthermal Plasma in Marine Diesel-Engine Exhaust Gas," Energies, MDPI, vol. 12(19), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3800-:d:274233
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    References listed on IDEAS

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    1. Pietikäinen, Mari & Väliheikki, Ari & Oravisjärvi, Kati & Kolli, Tanja & Huuhtanen, Mika & Niemi, Seppo & Virtanen, Sampo & Karhu, Toomas & Keiski, Riitta L., 2015. "Particle and NOx emissions of a non-road diesel engine with an SCR unit: The effect of fuel," Renewable Energy, Elsevier, vol. 77(C), pages 377-385.
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    Cited by:

    1. Masaaki Okubo, 2019. "Special Issue on Plasma Processes for Renewable Energy Technologies," Energies, MDPI, vol. 12(23), pages 1-4, November.
    2. Jaehwan Jang & Byungchae Min & Seongyool Ahn & Hyunjun Kim & Sangkyung Na & Jeongho Kang & Heehwan Roh & Gyungmin Choi, 2022. "Modeling Differential Pressure of Diesel Particulate Filters in Marine Engines," Energies, MDPI, vol. 15(10), pages 1-12, May.

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