What is the material circulation rate of a circulating fluidized bed boiler?

　　In the early development of technology, people referred to the rate of the amount of material circulating outside the cfb boiler to the amount of fuel entering the furnace per unit time as the material circulation rate. According to the new circulating fluidized bed design theory, the fluidization state of a circulating fluidized bed boiler design is determined, that is, the internal rapid bed state (determined along the height pressure drop distribution) at full load operation is determined, and the external circulation volume is determined, the heat transfer coefficient is determined accordingly, and the operating temperature is determined. This state should not be affected by the amount of fuel. On the surface, the increase or decrease of fuel ash content changes the amount of fuel entering the furnace and changes the so-called material circulation rate. In fact, the state of the fast bed in the boiler does not change. Simply put, when the same circulating fluidized bed boiler uses different fuels, the corresponding fluidization state is the same despite the different cycle rate.