The mixture effect of pulverized coal injected from burners and heat flux in furnace greatly affect the ignition position

ignition rate

combustion stability and efficiency of pulverized coals. Currently

there's lack of quantitative method to evaluate the mixture result. To solve this problem

this paper proposes a method evaluating the mixture effect of pulverized coal and heat flux based on combustion flame image. The measurement region in the combustion image is selected to evaluate the mixture effect according to the combustion flame image feature. In the region

the gray parameters and gray position distribution parameters which reflect the mixture result are built

and finally a mixture coefficient which can quantitatively evaluate the mixture result is constructed with the gray parameters and gray position distribution parameters. The application result shows that

this evaluation method can effectively evaluate the mixture effect

which provides a new combustion state space parameter that can be controlled quantitatively for boiler fine combustion optimization.