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Development of pulverized biomass combustor with a pre-combustion chamber

Author

Listed:
  • Laphirattanakul, Ponepen
  • Charoensuk, Jarruwat
  • Turakarn, Chinnapat
  • Kaewchompoo, Chatchalerm
  • Suksam, Niwat
Abstract
A 0.5 MW pre-combustion chamber for pulverized biomass burner was design based on a pulverized coal combustor design. The design concept, a 2D simulation guiding the construction and experimental results are discussed followed by an assessment of a 3D simulation. The difference in burning characteristics between coal and biomass were used to specify sizes of the air exits and the pre-combustion chamber. Simulation with pure biomass was used to guide fabrication of the test facility: the predicted temperature profiles suggested flame attachment within the specified operation range. Experimental results suggested that our design could achieve an anchoring flame as the measured temperature was above 800 °C within the pre-combustion chamber when operating between 0.3 and 0.5 MW. Maximum temperature at the last monitoring in the pre-combustion chamber was observed at 0.4 MW throughput, while the convection started to play negative impact at 0.5 M and the flame blow out occurred beyond this target. The 3D simulation under Reynolds-averaged Navier-Stokes assumption with its associated models agreed well with experiments which measured the axial temperature distribution in the pre-chamber. However, overestimation in the main combustion chamber suggested further improvement on model calibration as well as boundary conditions.

Suggested Citation

  • Laphirattanakul, Ponepen & Charoensuk, Jarruwat & Turakarn, Chinnapat & Kaewchompoo, Chatchalerm & Suksam, Niwat, 2020. "Development of pulverized biomass combustor with a pre-combustion chamber," Energy, Elsevier, vol. 208(C).
    • Handle: RePEc:eee:energy:v:208:y:2020:i:c:s0360544220314407
    DOI: 10.1016/j.energy.2020.118333
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    References listed on IDEAS

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