Optimization and Application of SNCR Denitrification Automatic Control for Circulating Fluidized Bed Boilers
Due to the complex combustion environment and significant changes in coal quality,the denitrification control effect of circulating fluidized bed boilers is average.Therefore,this paper applies advanced predictive control technology to optimize and adjust the denitrification control system of a circulating fluidized bed boiler.It adopts a multi-level composite control scheme with the NOx concentration at the environmental protection assessment point of the boiler′s total discharge as the core and the NOx concentration at the outlet of the economizer and desulfurization island as the auxiliary for automatic denitrification control.The results show that this scheme can effectively reduce the concentration of nitrogen oxides,reduce fluctuation amplitude,improve the level of denitrification automation control,and to some extent reduce the use of denitrification reducing agents,improving the economic efficiency of boiler operation.
circulating fluidized bed boilerSNCR denitrificationnitrogen oxides
NETL
NSTL
万方数据
维普
