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Numerical study on the influence of platen super-heater on combustion characteristics in a 600 MW tangentially fired pulverized-coal boiler

Numerical simulations have been conducted to study combustion characteristics of tangentially fired pulverized-coal boiler. A 600 MW tangentially coal-fired boiler was used for investigating the effect of platen super-heaters on the temperature, species distributions and heat transfer. Two furnace models were established, whose difference lies in modeling super-heaters or not. Results show that modelling platen super-heaters is conducive to precisely predict the temperature, species (CO, CO2, O2) and heat flux in the platen zone and has a weak influence on these data in zones below the platen. Modelling platen super-heaters has little influence on the NOx prediction. Platen super-heaters obviously decrease heat absorbed by water-wall nearby and affects heat distribution coefficient of furnace.
PAPER REVISED: 2020-06-26
PAPER ACCEPTED: 2020-07-09
  1. Zhou, Y., et al., Experimental and numerical study on the flow fields in upper furnace for large scale tangentially fired boilers. Applied Thermal Engineering, 29(2009), pp. 732-739
  2. Zhang, J., et al., Optimization of separated overfire air system for a utility boiler from a 3-MW pilot-scale facility. Energy & Fuels, 27(2013), pp. 1131-1140
  3. Díez, L.I., et al., Numerical investigation of NOx emissions from a tangentially-fired utility boiler under conventional and overfire air operation. Fuel, 87(2008), pp. 1259-1269
  4. Park, H.Y., et al., Reduction of main steam temperature deviation in a tangentially coal-fired two pass boiler. Fuel, 166(2016), pp. 509-516
  5. Hashimoto N, and Watanabe H. Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field. Fuel Processing Technology. (145)2016, pp. 20-30.
  6. Yin, C., et al., Investigation of the flow, combustion, heat-transfer and emissions from a 609 MW utility tangentially fired pulverized-coal boiler. Fuel, 81(2002), pp. 997-1006
  7. Yin, C., et al., Further study of the gas temperature deviation in large-scale tangentially coal-fired boilers. Fuel, 82(2003), pp. 1127-1137
  8. Park, H.Y., et al., Coupled fluid dynamics and whole plant simulation of coal combustion in a tangentially-fired boiler. Fuel, 89(2010), pp. 2001-2010
  9. Zhou, H., et al., Numerical simulation of the NOx emissions in a 1000 MW tangentially fired pulverized-coal boiler: influence of the multi-group arrangement of the separated over fire air. Energy & Fuels, 25(2011), pp. 2004-2012
  10. Zeng, L., et al., Numerical simulation of combustion characteristics and NOx emissions in a 300 MWe utility boiler with different outer secondary-air vane angles. Energy & Fuels, 24(2010), pp. 5349-5358
  11. Habib, M.A., et al., Thermal and emission characteristics in a tangentially fired boiler model furnace. International Journal of Energy Research, 34(2010), pp. 1164-1182
  12. Chen, K., et al., Effect of separated over-fire air on combustion performance of a 3 MW pilotscale facility, Applied Thermal Engineering, 108 (2016), pp. 30-40.
  13. Jones, J.M., et al., Modelling NOx formation in coal particle combustion at high temperature: an investigation of the devolatilisation kinetic factors. Fuel, 78(1999), pp. 1171-1179,
  14. Korytnyi, E., et al., Computational fluid dynamic simulations of coal-fired utility boilers: An engineering tool. Fuel, 88(2009), pp. 9-18
  15. Liu, H., et al., Effect of two-level over-fire air on the combustion and no emission characteristics in a 600 MW wall-fired boiler. Numerical Heat Transfer Part a-Applications, 68(2015), pp. 993-1009
  16. Zhang, X., et al., Numerical investigation of low NOx combustion strategies in tangentiallyfired coal boilers. Fuel, 142(2015), pp. 215-221
  17. Tian, D., et al., Influence of vertical burner tilt angle on the gas temperature deviation in a 700 MW low NOx tangentially fired pulverised-coal boiler. Fuel Processing Technology, 138(2015) pp. 616-628
  18. Haryanto, A. and Hong, K.S., Modeling and simulation of an oxy-fuel combustion boiler system with flue gas recirculation. Computers & Chemical Engineering, 35(2011), pp. 25-40
  19. Guo, J., et al., Numerical investigation on oxy-combustion characteristics of a 200 MWe tangentially fired boiler. Fuel, 40(2015), pp. 660-668
  20. Liu, H., et al., Modeling the occurrence and methods of reducing thermal deviations of upper furnace heating surfaces in a 1000 MW dual circle tangential firing single furnace ultrasupercritical boiler. Numerical Heat Transfer Part a-Applications, 66(2014), pp. 816-838