Modern design solutions in the design of boiler units, ovens and fireboxes burning solid fuel in a fluidified bed

Abstract

Coal fuel has always played an important role in Russia’s fuel and energy balance due to its extensive reserves, availability in a number of regions and relatively low cost. Currently, coal flaring technology is widely used in domestic boiler plants, but it should be noted that this approach is more applicable for high-quality high-calorie coals with low ash content. In addition, flaring is sensitive to changes in the composition of the fuel and deviations from the specified values can lead to a decrease in the reliability of the boiler unit. There are also regions where there are deposits of low-grade coal that are not suitable for flaring. The problem of boiler sensitivity to the use of unspecified fuels, as well as the involvement of local low-grade fuels, can be solved by introducing circulating fluidized bed (CFB) combustion technology.