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Investigating Agglomeration Tendency of Co-Gasification between High Alkali Biomass and Woody Biomass in a Bubbling Fluidized Bed System

Author

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  • Tanakorn Kittivech

    (The Joint Graduate School of Energy and Environment, Center of Excellence on Energy Technology and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

  • Suneerat Fukuda

    (The Joint Graduate School of Energy and Environment, Center of Excellence on Energy Technology and Environment, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

Abstract

Palm empty fruit bunches (EFB) is known as problematic biomass due to its high alkali content, i.e., more than half of inorganic matter is potassium (K). EFB when used as a fuel in fluidized beds with silica sand as bed material could form the sticky compound K 2 O·nSiO 2 starting at around 750 °C and adhere bed particles together, resulting in bed agglomeration. Blending EFB with rubber wood sawdust (RWS) could improve the chemical properties and consequent ash composition of the blended fuel. In this study, RWS was blended with EFB at three ratios: RWS:EFB = 25:75, RWS:EFB = 50:50, and RWS:EFB = 75:25. Adding RWS to the fuel prolonged de-fluidization time. The high content of CaO in the RWS ash acted as an inhibitor to prevent the formation of K 2 O·nSiO 2 and, instead, enhanced the formation of K 2 CO 3 , a higher melting point compound, which reduced bed agglomeration. During the experiment using RWS:EFB = 75:25, no bed agglomeration was found.

Suggested Citation

  • Tanakorn Kittivech & Suneerat Fukuda, 2019. "Investigating Agglomeration Tendency of Co-Gasification between High Alkali Biomass and Woody Biomass in a Bubbling Fluidized Bed System," Energies, MDPI, vol. 13(1), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:56-:d:300343
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    References listed on IDEAS

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    1. Tanakorn Kittivech & Suneerat Fukuda, 2019. "Effect of Bed Material on Bed Agglomeration for Palm Empty Fruit Bunch (EFB) Gasification in a Bubbling Fluidised Bed System," Energies, MDPI, vol. 12(22), pages 1-16, November.
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    Cited by:

    1. Carlos Vargas-Salgado & Elías Hurtado-Pérez & David Alfonso-Solar & Anders Malmquist, 2021. "Empirical Design, Construction, and Experimental Test of a Small-Scale Bubbling Fluidized Bed Reactor," Sustainability, MDPI, vol. 13(3), pages 1-22, January.
    2. Sylvie Valin & Serge Ravel & Philippe Pons de Vincent & Sébastien Thiery & Hélène Miller & Françoise Defoort & Maguelone Grateau, 2020. "Fluidised Bed Gasification of Diverse Biomass Feedstocks and Blends—An Overall Performance Study," Energies, MDPI, vol. 13(14), pages 1-19, July.

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