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Experimental study on NO emission and ash deposition during oxy-fuel combustion of high-alkali coal under oxygen-staged conditions

Author

Listed:
  • Wang, Chang'an
  • Zhao, Lin
  • Sun, Ruijin
  • Zhou, Lei
  • Jin, Liyan
  • Che, Defu

Abstract

The oxygen-staged combustion is an effective strategy to reduce NO emission, but its effects on ash deposition in oxy-fuel combustion of Zhundong high-alkali coal still remain unclear. This paper simultaneously focused on the NO emission and ash deposition during the oxygen-staged oxy-fuel combustion of Zhundong coal using a vertical two-stage furnace system. The air- and oxygen-staged combustion were compared and the impacts of oxygen content and stoichiometric ratio in primary zone (SR1) in oxygen-staged combustion were further evaluated. The results show that compared to air-staged combustion, the oxygen-staged case in oxy-fuel combustion leads to smaller conversion ratio of fuel-N to NO (XNO) and smaller mass of ash deposit. Under oxygen-staged conditions, both the XNO and deposit mass have an upward trend as the oxygen content increases (15%–50%). About 20 mg more ash could be collected for every 10% increase in oxygen content. The XNO increases when SR1 gets elevated from 0.5 to 1.2, however, the deposit mass exhibits a downtrend at SR1 ≤ 0.9 and becomes nearly independent of oxygen supply when the SR1 further increases. The SR1 of 0.9 is a reasonable choice, and some measures should be taken to alleviate the ash-related problems if smaller SR1 is needed.

Suggested Citation

  • Wang, Chang'an & Zhao, Lin & Sun, Ruijin & Zhou, Lei & Jin, Liyan & Che, Defu, 2022. "Experimental study on NO emission and ash deposition during oxy-fuel combustion of high-alkali coal under oxygen-staged conditions," Energy, Elsevier, vol. 251(C).
    • Handle: RePEc:eee:energy:v:251:y:2022:i:c:s0360544222007782
    DOI: 10.1016/j.energy.2022.123875
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    1. Li, Zixiang & Miao, Zhengqing, 2019. "Primary air ratio affects coal utilization mode and NOx emission in lignite pulverized boiler," Energy, Elsevier, vol. 187(C).
    2. Choi, Minsung & Kim, Kibeom & Li, Xinzhuo & Deng, Kaiwen & Park, Yeseul & Seo, Minseok & Sung, Yonmo & Choi, Gyungmin, 2020. "Strategic combustion technology with exhaust tube vortex flame: Combined effect of biomass co-firing and air-staged combustion on combustion characteristics and ash deposition," Energy, Elsevier, vol. 203(C).
    3. Riaza, J. & Gil, M.V. & Álvarez, L. & Pevida, C. & Pis, J.J. & Rubiera, F., 2012. "Oxy-fuel combustion of coal and biomass blends," Energy, Elsevier, vol. 41(1), pages 429-435.
    4. Andreoni, Valeria, 2022. "Drivers of coal consumption changes: A decomposition analysis for Chinese regions," Energy, Elsevier, vol. 242(C).
    5. Li, Sen & Xu, Tongmo & Hui, Shien & Wei, Xiaolin, 2009. "NOx emission and thermal efficiency of a 300Â MWe utility boiler retrofitted by air staging," Applied Energy, Elsevier, vol. 86(9), pages 1797-1803, September.
    6. Liang, Zengying & Ma, Xiaoqian & Lin, Hai & Tang, Yuting, 2011. "The energy consumption and environmental impacts of SCR technology in China," Applied Energy, Elsevier, vol. 88(4), pages 1120-1129, April.
    7. Liu, Zhuo & Li, Jianbo & Long, Xiaofei & Lu, Xiaofeng, 2022. "Mechanisms and characteristics of ash layer formation on bed particles during circulating fluidized bed combustion of Zhundong lignite," Energy, Elsevier, vol. 245(C).
    8. Wang, Pengqian & Wang, Chang'an & Yuan, Maobo & Wang, Chaowei & Zhang, Jinping & Du, Yongbo & Tao, Zichen & Che, Defu, 2020. "Experimental evaluation on co-combustion characteristics of semi-coke and coal under enhanced high-temperature and strong-reducing atmosphere," Applied Energy, Elsevier, vol. 260(C).
    9. Engin, Berrin & Kayahan, Ufuk & Atakül, Hüsnü, 2020. "A comparative study on the air, the oxygen-enriched air and the oxy-fuel combustion of lignites in CFB," Energy, Elsevier, vol. 196(C).
    10. Lasek, Janusz A. & Janusz, Marcin & Zuwała, Jarosław & Głód, Krzysztof & Iluk, Andrzej, 2013. "Oxy-fuel combustion of selected solid fuels under atmospheric and elevated pressures," Energy, Elsevier, vol. 62(C), pages 105-112.
    11. Stimpson, Curtis K. & Brunner, David R. & Reeder, Todd A. & Tree, Dale R., 2013. "Analysis of deposits collected under staged conditions in a pulverized coal reactor for eight US coals," Applied Energy, Elsevier, vol. 110(C), pages 65-72.
    Full references (including those not matched with items on IDEAS)

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    4. Zhao, Lin & Ma, Guowei & Wang, Chang'an & Chen, Yongxu & Nie, Yingchao & Chen, Yuanmao & Che, Defu, 2025. "Study on the deposition behaviors of sodium and calcium salts in high-alkali coal under oxy-fuel condition," Energy, Elsevier, vol. 315(C).

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