500 MW of thermal capacity and T = 450 ° C, P = 80 bar boilers of thermal power plant in 6000 a valuable and high-volatile thermal kcal.kg a lignite coal (A = 12%) are etched. Fluidized bed boiler system by making the most appropriate design elements and describe the shape by drawing. Determine the capacity of the system elements (coal supply unit, the daily silo, cyclone capacity, etc.)