Abstract
The effects of the coal char on reducing NO emission with and without additive were studied at high temperature in order to decrease the fuel-N discharge in the circulating fluidized bed boiler. According to the experimental results, combining the calculating models and boundary conditions, the NO content distribution with and without additive were separately calculated through the FLUENT6.3 in a 460t/h CFB.The results indicated that the coal char specific surface area and reaction rate constant were increased with the addition of additive; the calculating models was suited; The NO weight percent was decreased with the addition of TiO2 additive in the CFB. The experiments and simulation results suggested a reference basis is provided for improving the removal effect of the feul-N in circulating fluidized bed boiler.
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