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An experimental and modeling study of ash deposition behaviour for co-firing peat with lignite

Author

Listed:
  • Shao, Yuanyuan
  • Wang, Jinsheng
  • Xu, Chunbao (Charles)
  • Zhu, Jesse
  • Preto, Fernando
  • Tourigny, Guy
  • Badour, Chadi
  • Li, Hanning

Abstract

Co-firing peat with lignite for power generation was studied at pilot-scale, focusing on the issue of ash deposition, the major concern for this application. A specially designed probe was used to measure the rate of ash deposition under similar conditions of power plant boiler operation. Fraction of peat in the feed was varied up to 100%. It was observed that whereas the ash deposition decreased in general with increasing fraction of low-ash peat, the decrease was significantly less than expected from ash content of the feed, suggesting higher deposition tendency of ash from the peat. Chlorine content in the deposited ash showed a maximum at a certain blend ratio of the feed, which could not be explained by fuel chlorine content alone. The ash and chlorine deposition behaviour has been analyzed and simulated by mathematical models where interactions between fuel chlorine, alkali and ash particles are parameterized. The models ought to be useful for control and optimization purposes, and also be useful for co-firing other fuel blends.

Suggested Citation

  • Shao, Yuanyuan & Wang, Jinsheng & Xu, Chunbao (Charles) & Zhu, Jesse & Preto, Fernando & Tourigny, Guy & Badour, Chadi & Li, Hanning, 2011. "An experimental and modeling study of ash deposition behaviour for co-firing peat with lignite," Applied Energy, Elsevier, vol. 88(8), pages 2635-2640, August.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:8:p:2635-2640
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    Citations

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    Cited by:

    1. Li, Fenghai & Li, Zhenzhu & Huang, Jiejie & Fang, Yitian, 2014. "Understanding mineral behaviors during anthracite fluidized-bed gasification based on slag characteristics," Applied Energy, Elsevier, vol. 131(C), pages 279-287.
    2. Liu, Rongtang & Liu, Ming & Fan, Peipei & Zhao, Yongliang & Yan, Junjie, 2018. "Thermodynamic study on a novel lignite poly-generation system of electricity-gas-tar integrated with pre-drying and pyrolysis," Energy, Elsevier, vol. 165(PB), pages 140-152.
    3. Oladejo, Jumoke M. & Adegbite, Stephen & Pang, Cheng Heng & Liu, Hao & Parvez, Ashak M. & Wu, Tao, 2017. "A novel index for the study of synergistic effects during the co-processing of coal and biomass," Applied Energy, Elsevier, vol. 188(C), pages 215-225.
    4. Li, Guangyu & Xu, Shisen & Zhao, Xuebin & Sun, Ruijin & Wang, Chang’an & Liu, Kang & Mao, Qisen & Che, Defu, 2020. "Investigation of chemical composition and morphology of ash deposition in syngas cooler of an industrialized two-stage entrained-flow coal gasifier," Energy, Elsevier, vol. 194(C).
    5. Gong, Yan & Zhang, Qing & Guo, Qinghua & Xue, Zhicun & Wang, Fuchen & Yu, Guangsuo, 2017. "Vision-based investigation on the ash/slag particle deposition characteristics in an impinging entrained-flow gasifier," Applied Energy, Elsevier, vol. 206(C), pages 1184-1193.
    6. Oladejo, Jumoke & Adegbite, Stephen & Gao, Xiang & Liu, Hao & Wu, Tao, 2018. "Catalytic and non-catalytic synergistic effects and their individual contributions to improved combustion performance of coal/biomass blends," Applied Energy, Elsevier, vol. 211(C), pages 334-345.
    7. Wieland, Christoph & Kreutzkam, Benjamin & Balan, Gundula & Spliethoff, Hartmut, 2012. "Evaluation, comparison and validation of deposition criteria for numerical simulation of slagging," Applied Energy, Elsevier, vol. 93(C), pages 184-192.
    8. Pérez-Jeldres, Rubén & Flores, Mauricio & Cornejo, Pablo & Gordon, Alfredo & García, Ximena, 2018. "Co-firing of coal/biomass blends in a pilot plant facility: A comparative study between Opuntia ficus-indica and Pinus radiata," Energy, Elsevier, vol. 145(C), pages 1-16.
    9. Namkung, Hueon & Xu, Li-Hua & Kang, Tae-Jin & Kim, Dae Sung & Kwon, Hyok-Bo & Kim, Hyung-Taek, 2013. "Prediction of coal fouling using an alternative index under the gasification condition," Applied Energy, Elsevier, vol. 102(C), pages 1246-1255.
    10. Yuanyuan Shao & Jinsheng Wang & Fernando Preto & Jesse Zhu & Chunbao Xu, 2012. "Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation," Energies, MDPI, vol. 5(12), pages 1-19, December.

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