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High Temperature Electrical Charger to Reduce Particulate Emissions from Small Biomass-Fired Boilers

Author

Listed:
  • Heikki Suhonen

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Ari Laitinen

    (Aerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, 33720 Tampere, Finland)

  • Miika Kortelainen

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Pasi Yli-Pirilä

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Hanna Koponen

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Petri Tiitta

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
    Current address: Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland.)

  • Mika Ihalainen

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Jorma Jokiniemi

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Mika Suvanto

    (Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland)

  • Jarkko Tissari

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland)

  • Niko Kinnunen

    (Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland)

  • Olli Sippula

    (Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
    Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland)

Abstract

New particulate matter (PM) filtering technologies are needed to meet the emission regulations for small combustion appliances. In this work, we investigate the performance of a novel electrical particle filtration system, the single needle shielded corona charger (SCC), which offers an advantageous solution for PM control in boilers by enhancing particulate deposition within existing boiler sections. Experiments under different operating conditions of a wood-fired boiler were performed, wherein the SCC was installed upstream of either a condensing heat exchanger (CHX) or a cyclone. PM reduction was found to be strongly affected by the SCC temperature and the following collection surface area, and reached its highest reduction efficiency of >90% at the temperature range of 400–500 °C when operating in combination with a CHX. The SCC–cyclone combination was less efficient, providing a 27% PM reduction, as a result of the low surface area and residence time in the cyclone. These results indicate that the SCC can feasibly provide particle filtration when combined with a CHX, wet scrubber, or a cyclone to meet the new emission regulation requirements. The system is best suited for small-scale boilers but can be scaled up to larger boilers by increasing the number of corona chargers.

Suggested Citation

  • Heikki Suhonen & Ari Laitinen & Miika Kortelainen & Pasi Yli-Pirilä & Hanna Koponen & Petri Tiitta & Mika Ihalainen & Jorma Jokiniemi & Mika Suvanto & Jarkko Tissari & Niko Kinnunen & Olli Sippula, 2020. "High Temperature Electrical Charger to Reduce Particulate Emissions from Small Biomass-Fired Boilers," Energies, MDPI, vol. 14(1), pages 1-20, December.
    • Handle: RePEc:gam:jeners:v:14:y:2020:i:1:p:109-:d:469215
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    References listed on IDEAS

    as
    1. Grigonytė-Lopez Rodriguez, Julija & Suhonen, Heikki & Laitinen, Ari & Tissari, Jarkko & Kortelainen, Miika & Tiitta, Petri & Lähde, Anna & Keskinen, Jorma & Jokiniemi, Jorma & Sippula, Olli, 2020. "A novel electrical charging condensing heat exchanger for efficient particle emission reduction in small wood boilers," Renewable Energy, Elsevier, vol. 145(C), pages 521-529.
    2. Yan, Pei & Zheng, Chenghang & Zhu, Weizhuo & Xu, Xi & Gao, Xiang & Luo, Zhongyang & Ni, Mingjiang & Cen, Kefa, 2016. "An experimental study on the effects of temperature and pressure on negative corona discharge in high-temperature ESPs," Applied Energy, Elsevier, vol. 164(C), pages 28-35.
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