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Experimental study on thermal modification characteristics of entrained-flow gasified fine ash using circulating fluidized bed

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  • Wang, Wenyu
  • Li, Wei
  • Ren, Qiangqiang
  • Lyu, Qinggang

Abstract

Gasified fine ash (GFA) exhibits poor reactivity due to its low carbon content and high ash content, which restricts its potential for combustion utilization. To enhance the reactivity of GFA, we employed a circulating fluidized bed (CFB) as a thermal modification unit (TMU) to thermally modify GFA from different entrained-flow gasifiers. We also experimentally investigated the impact of equivalence ratio, temperature, and feedstock moisture content on the thermal modification of GFA. After thermal modification of GFA, the pore structure of modified fine ash (MFA) was significantly improved, the proportion of active sites in residual carbon increased, and the proportion of graphitized structures decreased. An appropriate increment in the equivalence ratio increased the number of carbon active sites in MFA. A good thermal modification effect was found on the GFA produced by different types of gasification furnaces. The temperature rise promoted gasification reaction in the TMU and restricted carbon conversion, thus decreasing the consumption of combustible residual carbon. An increase of water content in the GFA improved the pore structure, but excessive water caused adverse effects.

Suggested Citation

  • Wang, Wenyu & Li, Wei & Ren, Qiangqiang & Lyu, Qinggang, 2024. "Experimental study on thermal modification characteristics of entrained-flow gasified fine ash using circulating fluidized bed," Energy, Elsevier, vol. 293(C).
    • Handle: RePEc:eee:energy:v:293:y:2024:i:c:s0360544224004869
    DOI: 10.1016/j.energy.2024.130714
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    References listed on IDEAS

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    1. Riaza, J. & Álvarez, L. & Gil, M.V. & Pevida, C. & Pis, J.J. & Rubiera, F., 2011. "Effect of oxy-fuel combustion with steam addition on coal ignition and burnout in an entrained flow reactor," Energy, Elsevier, vol. 36(8), pages 5314-5319.
    2. Wang, Wenyu & Li, Wei & Liang, Chen & Zhou, Li & Ren, Qiangqiang, 2023. "Decarburization and ash characteristics during melting combustion of fine ash from entrained-flow gasifier," Energy, Elsevier, vol. 263(PA).
    3. Li, Jiawei & Fan, Subo & Zhang, Xuyang & Chen, Zhichao & Qiao, Yanyu & Yuan, Zhenhua & Zeng, Lingyan & Li, Zhengqi, 2022. "Physicochemical structure, combustion characteristics and SiO2 properties of entrained flow gasification ash," Energy, Elsevier, vol. 251(C).
    4. Chen, Wei-Hsin & Chen, Chih-Jung & Hung, Chen-I & Shen, Cheng-Hsien & Hsu, Heng-Wen, 2013. "A comparison of gasification phenomena among raw biomass, torrefied biomass and coal in an entrained-flow reactor," Applied Energy, Elsevier, vol. 112(C), pages 421-430.
    5. Yi, Baojun & Zhang, Liqi & Huang, Fang & Mao, Zhihui & Zheng, Chuguang, 2014. "Effect of H2O on the combustion characteristics of pulverized coal in O2/CO2 atmosphere," Applied Energy, Elsevier, vol. 132(C), pages 349-357.
    6. Tremel, Alexander & Haselsteiner, Thomas & Nakonz, Mario & Spliethoff, Hartmut, 2012. "Coal and char properties in high temperature entrained flow gasification," Energy, Elsevier, vol. 45(1), pages 176-182.
    7. Adeyemi, Idowu & Janajreh, Isam & Arink, Thomas & Ghenai, Chaouki, 2017. "Gasification behavior of coal and woody biomass: Validation and parametrical study," Applied Energy, Elsevier, vol. 185(P2), pages 1007-1018.
    Full references (including those not matched with items on IDEAS)

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