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Combustion of Poplar and Pine Pellet Blends in a 50 kW Domestic Boiler: Emissions and Combustion Efficiency

Author

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  • Esperanza Monedero

    (Instituto de Investigación en Energías Renovables, Universidad de Castilla-La Mancha, Albacete 02006, Spain)

  • Henar Portero

    (Instituto de Investigación en Energías Renovables, Universidad de Castilla-La Mancha, Albacete 02006, Spain)

  • Magín Lapuerta

    (Escuela Técnica Superior de Ingenieros Industriales, Universidad de Castilla-La Mancha, Ciudad Real 13071, Spain)

Abstract

Poplar pellets with and without Ca, Mg-lignosulphonate and three poplar and pine pellet blends (with three different percentages of pine—5, 45 and 95 wt.%) were burned in a 50 kW domestic boiler in order to evaluate their suitability as fuels. The boiler efficiency and emissions were analyzed and compared with those from tests with poplar pellet. It was found that the adequate adjustment of excess air and of flowrate of secondary air according to the fuel properties improve the combustion efficiency. The results show an improvement in CO and NO x emissions and combustion efficiency when either Ca, Mg-lignosulphonate or pine were blended with poplar. However, the use of Ca, Mg-lignosulphonate is discouraged due to the observed increase in SO x emissions. No operational problems related with unburned matter or ash were observed for any of the pellet blends tested.

Suggested Citation

  • Esperanza Monedero & Henar Portero & Magín Lapuerta, 2018. "Combustion of Poplar and Pine Pellet Blends in a 50 kW Domestic Boiler: Emissions and Combustion Efficiency," Energies, MDPI, vol. 11(6), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1580-:d:152820
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    References listed on IDEAS

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    4. Esperanza Monedero & Juan José Hernández & Rocío Collado, 2017. "Combustion-Related Properties of Poplar, Willow and Black Locust to be used as Fuels in Power Plants," Energies, MDPI, vol. 10(7), pages 1-11, July.
    5. Araceli Regueiro & David Patiño & Jacobo Porteiro & Enrique Granada & José Luis Míguez, 2016. "Effect of Air Staging Ratios on the Burning Rate and Emissions in an Underfeed Fixed-Bed Biomass Combustor," Energies, MDPI, vol. 9(11), pages 1-16, November.
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