| The boiler is important burning equipment in a power plant. The combustion condition of it has a direct effect to the safety, economy and environmental protections of the power plant. So many studies are carried out focusing on the combustion efficiency of boiler. Firstly, the article researches on the influences of air and pulverized coal distribution,and ummarizes influence factors of the mix between primary, secondary air and air distribution, then introduces the concept,calculation method and results analysis. Finally, respective relationships of primary-air flow rate and excess air radio based on historical datas of a plant are found out,then we can find their actual significances through comparing with the results around the PCA. |