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Numerical simulation of the co-firing of pulverized coal and eucalyptus wood in a 1000MWth opposed wall-fired boiler

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Listed:
  • Huang, Junxuan
  • Liao, Yanfen
  • Lin, Jianhua
  • Dou, Changjiang
  • Huang, Zengxiu
  • Yu, Xiongwei
  • Yu, Zhaosheng
  • Chen, Chunxiang
  • Ma, Xiaoqian

Abstract

Currently, coal-fired coupled biomass power generation is widely regarded as a primary method for reducing carbon emissions in coal-fired power plants. This research investigates the co-firing of biomass in an opposed wall-fired boiler and the implementation of air-staged combustion technology using numerical simulation approaches. The study examines the impact of various air methods of distribution and blending ratios on combustion properties and NOx emissions. The findings demonstrate that the abrasive wear of fuel particles on the platen superheater is decreased by the addition of biomass to the fuel mix. Furthermore, a drop in the furnace chamber's overall temperature is the outcome of raising the blending ratio. Different blending ratios have their own adapted air distribution methods. At blending ratios of 10% and 30%, the W-type air distribution exhibits the lowest NOx outlet concentrations of 231.84 mg/Nm3 and 220.6 mg/Nm3, respectively. Moreover, the W-type air distribution shows the highest burnup rates of 98.74% and 98.43% at these blending ratios. This suggests that it is feasible to change the burner monolayer air distribution and combine it with co-firing of biomass technology to achieve low NOx and efficient operation of a hedge-fired boiler.

Suggested Citation

  • Huang, Junxuan & Liao, Yanfen & Lin, Jianhua & Dou, Changjiang & Huang, Zengxiu & Yu, Xiongwei & Yu, Zhaosheng & Chen, Chunxiang & Ma, Xiaoqian, 2024. "Numerical simulation of the co-firing of pulverized coal and eucalyptus wood in a 1000MWth opposed wall-fired boiler," Energy, Elsevier, vol. 298(C).
    • Handle: RePEc:eee:energy:v:298:y:2024:i:c:s036054422401079x
    DOI: 10.1016/j.energy.2024.131306
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    References listed on IDEAS

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