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Effect of Bed Material on Bed Agglomeration for Palm Empty Fruit Bunch (EFB) Gasification in a Bubbling Fluidised Bed System

Author

Listed:
  • 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

The high level of potassium compounds in Empty Fruit Bunch (EFB) induces ash-related problems, such as bed agglomeration, which is caused by the formation of a low-melting-point sticky compound: K 2 On·SiO 2 , especially in fluidised bed gasification using silica sand as bed material. Dolomite was found to be an effective alternative bed material for preventing bed agglomeration by the release of CaO via calcination processes during gasification. CaO acts as a catalyst to inhibit bed agglomeration by possibly enhancing the formation of K 2 CO 3 instead of K 2 O·nSiO 2 . Alumina sand was also found to be a suitable alternative bed material to prevent bed agglomeration; however, due to the relatively high density of alumina sand, high gas velocity was needed to ensure good mixing and fluidisation. Using both dolomite and alumina sand as bed materials yielded a product gas having similar higher heating value (HHV) to that when using silica sand (i.e., 3.8–3.9 MJ/Nm 3 ).

Suggested Citation

  • 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.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4336-:d:286753
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    Citations

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    Cited by:

    1. 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.
    2. Long, Xiaofei & Li, Jianbo & Wu, Qi & Lu, Xiaofeng & Zhang, Yuanyuan & Li, Dongfang & Jeon, Chung-Hwan & Zhang, Dongke, 2024. "Inhibiting agglomeration of bed particles in CFB burning high-alkali fuel: Experiment, mechanisms and criteria for recirculating bottom ash or selecting alternative bed materials," Energy, Elsevier, vol. 289(C).

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