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Release Characteristics of Potassium during Biomass Combustion

Author

Listed:
  • Feng Zhang

    (Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, China)

  • Xiuqin Hou

    (Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, China)

  • Xingchang Xue

    (Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, China)

  • Jiyun Ren

    (State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Lingxiao Dong

    (State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Xumeng Wei

    (Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, China)

  • Lin Jian

    (Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, China)

  • Lei Deng

    (State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

To investigate the release characteristics of potassium during biomass combustion, experimental studies were conducted on three typical biomass fuels in a reactor with a fixed-bed system. The effects of fuel type, combustion temperature, exposure time, oxygen concentration, and water-washing pretreatment were evaluated. The results show that the K release ratio in corn straw increases with the increment in exposure time when the temperature is between 700 and 900 °C. When burned at 900 °C for 40 min, 17.73% of K is released in the volatile combustion stage, while only 2.62% is released in the char combustion stage. When burned at 700–900 °C, the K release ratios in both corn and wheat straw improve slightly with the elevation in oxygen concentration. Water washing significantly reduces the ratio and the amount of K release from corn straw during combustion. The effect of temperature and atmosphere on K release from the water-washed sample is similar to that for the raw sample.

Suggested Citation

  • Feng Zhang & Xiuqin Hou & Xingchang Xue & Jiyun Ren & Lingxiao Dong & Xumeng Wei & Lin Jian & Lei Deng, 2023. "Release Characteristics of Potassium during Biomass Combustion," Energies, MDPI, vol. 16(10), pages 1-11, May.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:10:p:4107-:d:1147617
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    References listed on IDEAS

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    1. Ahmed, I.I. & Gupta, A.K., 2012. "Sugarcane bagasse gasification: Global reaction mechanism of syngas evolution," Applied Energy, Elsevier, vol. 91(1), pages 75-81.
    2. Jiang, Jiahao & Tie, Yuan & Deng, Lei & Che, Defu, 2022. "Influence of water-washing pretreatment on ash fusibility of biomass," Renewable Energy, Elsevier, vol. 200(C), pages 125-135.
    3. Long, Jimiao & Deng, Lei & Che, Defu, 2020. "Analysis on organic compounds in water leachate from biomass," Renewable Energy, Elsevier, vol. 155(C), pages 1070-1078.
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