2. Circulating fluidized bed boiler is radically different from other boilers on the burning system. Its burning system consists of burning room, material destination and material returner. The high heat material enters the material returner together with the airflow, and the material collected will enter the material returner and then returns the burning room. This is called circulating burning which increase the burning efficiency greatly. 3. This boiler is with a wide range and high speed of load adjustment. 4. A clean and environmental burning technology is used in this boiler to improve the quality of air and environment. 5. It is easier to use the ash completely because of the low-heat burning and good burning condition of this boiler. 6. There is no immersed tube in the boiler, so it is easy to start or stop the equipment Upto 660mw