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Issue
Korean Journal of Chemical Engineering,
Vol.9, No.4, 206-211, 1992
COAL COMBUSTION CHARACTERISTICS IN A FLUIDIZED BED COMBUSTOR WITH A DRAFT TUBE
Lee WJ, Cho YJ, Kim JR, Kim SD
The effects of gas velocity to draft tube (3-6mf), bed temperature (800-900℃) and excess air ratio(0-3%) on the total entrainment rate, overall combustion efficiency and heat transfer coefficient have been determined in an internally circulating fluidized bed combustor with a draft tube. The total entrainment rate increases with an increase in gas velocity to draft tube, but deceases with increasing bed temperature and excess air ratio. The overall combustion efficiency increases with increasing excess air ratio, but decreases with increasing gas velocity to draft tube. The overall combustion efficiency obtained in internally circulating fluidized beds was found o be somewhat higher than that in a bubbling fluidized bed combustor.
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[Cited By]
  1. Kim SD, Kim YH, Roh SA, Lee DH, Korean Journal of Chemical Engineering, 19(5), 911, 2002
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