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Tar fouling reduction in wood pellet boiler using additives and study the effects of additives on the characteristics of pellets

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  • Kafle, Sagar
  • Euh, Seung Hee
  • Cho, Lahoon
  • Nam, Yun Seong
  • Oh, Kwang Cheol
  • Choi, Yun Sung
  • Oh, Jae-Heun
  • Kim, Dae Hyun

Abstract

Fouling of tar in wood pellet boiler reduces its thermal efficiency and demands periodical maintenance to keep its original performance. The fouling of tar in wood pellet boiler was studied along with the physical and thermal characteristics of the pellets. Four different samples were prepared and accessed: a sample of control pellets without additives and three other samples each with 2% additives (dolomite and/or lime). Experiments for each sample were carried out in the pellet boiler for 20 h and fouling of tar is investigated. It is observed that the fouling of tar is drastically reduced in the pellets with additives 1% dolomite plus 1% lime: 76% by area-density (kg/m2) and 82% by thickness (mm). At the same time, the particle density, mechanical durability, bulk density, and heating value are also found to be improved leading to an improved overall performance of the pellets and the boiler. The pellets with the additives are, therefore, found to be a better option to reduce tar in wood pellet boilers and are recommended.

Suggested Citation

  • Kafle, Sagar & Euh, Seung Hee & Cho, Lahoon & Nam, Yun Seong & Oh, Kwang Cheol & Choi, Yun Sung & Oh, Jae-Heun & Kim, Dae Hyun, 2017. "Tar fouling reduction in wood pellet boiler using additives and study the effects of additives on the characteristics of pellets," Energy, Elsevier, vol. 129(C), pages 79-85.
    • Handle: RePEc:eee:energy:v:129:y:2017:i:c:p:79-85
    DOI: 10.1016/j.energy.2017.04.105
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    References listed on IDEAS

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    1. Yin, Chungen, 2020. "Development in biomass preparation for suspension firing towards higher biomass shares and better boiler performance and fuel rangeability," Energy, Elsevier, vol. 196(C).
    2. Pronobis, Marek & Wejkowski, Robert & Kalisz, Sylwester & Ciukaj, Szymon, 2023. "Conversion of a pulverized coal boiler into a torrefied biomass boiler," Energy, Elsevier, vol. 262(PB).
    3. Ghorashi, Seyed Amin & Khandelwal, Bhupendra, 2023. "Toward the ultra-clean and highly efficient biomass-fired heaters. A review," Renewable Energy, Elsevier, vol. 205(C), pages 631-647.
    4. Eo, Jae Won & Kim, Min Jun & Jeong, In Seon & Cho, LaHoon & Kim, Seok Jun & Park, Sunyong & Kim, Dae Hyun, 2021. "Enhancing thermal efficiency of wood pellet boilers by improving inlet air characteristics," Energy, Elsevier, vol. 228(C).
    5. Lee, Sang Yeol & Oh, Kwang Cheol & Lee, Chung Geon & Cho, La Hoon & Park, Sun Yong & Jeong, In Seon & Kim, Dae Hyun, 2018. "Improvement of thermal efficiency of wood pellet boilers through the refractory insulation in a combustion chamber and fire tube and baffle modification," Energy, Elsevier, vol. 161(C), pages 1115-1121.

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