This series of products is the use of high temperature thermal insulation spiral case of cyclone separator, the application of circulating fluidized bed clean combustion technology design of the boiler, with a wide range of fuel, high combustion efficiency, low pollution and fuel saving, easy adjustment, etc.. The product design uses a circulating fluidized bed combustion method, through the furnace with limestone desulfurization. Is our company in the summary of the design experience of the circulating fluidized bed boiler, operating experience, based on domestic and foreign universities and research institutes jointly developed the energy-saving environmental protection type circulating fluidized bed boiler. QXF type circulating fluidized bed hot water boiler adopts the forced water circulation mode, and the boiler can be adjusted continuously between 40% and 100% load, and there are 10% overload capacity to meet the requirements of the heating load change. Patented technology of efficient adiabatic volute separator and low resistance Bell Hood was used in our development of circulating fluidized bed boiler, with the invention patent of "burning low calorific value fuel energy-saving type circulating fluidized bed boiler. To high parameter, large capacity and energy saving, environmental protection oriented development.