What are the effects of the bed temperature of the circulating fluidized bed on the fragmentation behavior of coal particles?

　　The bed temperature mainly affects the fragmentation behavior of coal particles by affecting the speed of the volatilization process. After the bed temperature rises, the gas composition inside the particles has a higher pressure gradient, which will form an internal pressure burst that expands outward. Therefore, as the bed temperature increases, the fragmentation degree of coal particles intensifies.