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Nanoparticle Emission and Characterization from Pre-Dried Lignite and Bituminous Coal Co-Combustion

Author

Listed:
  • Ioannis Avagianos

    (Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 6th klm. Charilaou, Thermi Road, GR-570 01 Thessaloniki, Greece
    School of Mechanical Engineering, NTUA Zografos Campus, 9 Heroon Polytechniou, 15780 Zografos, Athens, Greece)

  • Panagiotis Vounatsos

    (Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 6th klm. Charilaou, Thermi Road, GR-570 01 Thessaloniki, Greece)

  • Ioannis Papandreou

    (Institute of Combustion and Power Plant Technology (IFK), University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany)

  • Joerg Maier

    (Institute of Combustion and Power Plant Technology (IFK), University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany)

  • Panagiotis Grammelis

    (Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 6th klm. Charilaou, Thermi Road, GR-570 01 Thessaloniki, Greece)

  • Emmanuel Kakaras

    (Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas, 6th klm. Charilaou, Thermi Road, GR-570 01 Thessaloniki, Greece
    School of Mechanical Engineering, NTUA Zografos Campus, 9 Heroon Polytechniou, 15780 Zografos, Athens, Greece)

Abstract

Nowadays, the high share of electricity production from renewables drives coal-fired power plants to adopt a more flexible operation scheme and, at the same time, maintain flue gas emissions within respective standards. A 500 kWth pulverized coal furnace was used to study pre-dried lignite combustion or co-combustion as an available option for these plants. Bituminous coal from Czech Republic and pre-dried lignite from Greece were blended for the experiments. Particle emissions measurements with a heated Electrical Low Pressure Impactor (ELPI+) and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS) analyses were performed. The effect of the pre-dried lignite proportions in the fuel feed and the combustion conditions regarding the combustion air staging were the two parameters selected for this study. Skeletal density values were measured from the cyclone prior to the impactor. Results are depicted with respect to the aerodynamic and Stokes diameter for impactor stages. The presence of pre-dried lignite in the fuel blend lowers the particle matter (PM) PM 2.5 , PM 1 and PM 0.1 emissions, thus having a positive impact on ESP’s fractional and overall efficiency. The staged combustion air feed reduces the particle emissions in all cases. Sulfur content follows a pattern of higher concentration values for finer particles.

Suggested Citation

  • Ioannis Avagianos & Panagiotis Vounatsos & Ioannis Papandreou & Joerg Maier & Panagiotis Grammelis & Emmanuel Kakaras, 2020. "Nanoparticle Emission and Characterization from Pre-Dried Lignite and Bituminous Coal Co-Combustion," Energies, MDPI, vol. 13(9), pages 1-19, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:9:p:2373-:d:355949
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    Citations

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    Cited by:

    1. Tadeusz Dziubak & Leszek Bąkała, 2021. "Computational and Experimental Analysis of Axial Flow Cyclone Used for Intake Air Filtration in Internal Combustion Engines," Energies, MDPI, vol. 14(8), pages 1-28, April.
    2. Ryszard Wójtowicz & Paweł Wolak & Agnieszka Wójtowicz-Wróbel, 2020. "Numerical and Experimental Analysis of Flow Pattern, Pressure Drop and Collection Efficiency in a Cyclone with a Square Inlet and Different Dimensions of a Vortex Finder," Energies, MDPI, vol. 14(1), pages 1-20, December.
    3. Tadeáš Ochodek & Emmanouil Karampinis & Artur Pozarlik, 2022. "Contemporary Problems in Combustion—Fuels, Their Valorisation, Emissions, Flexibility and Auxiliary Systems," Energies, MDPI, vol. 15(5), pages 1-4, February.

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