A coal combustion model for circulating fluidized bed boilers

A steady state model of a coal-fired circulating fluidized-bed boiler, base d on hydrodynamics, heat transfer and combustion, is presented. This model predicts the flue gas temperature, the chemical gas species (O-2, H2O, CO, CO2 and SO2) and char concentration distributions in both the axial and rad ial locations along the furnace including the bottom and upper portion. The model was validated against experimental data generated in a 35 t/h commer cial boiler with low circulation ratio. (C) 1999 Elsevier Science Ltd. All rights reserved.