Large-scale circulating fluidized bed boiler clean power generation method by mixing and burning coal slime

The invention relates to a large-scale circulating fluidized bed boiler clean power generation method by mixing and burning coal slime. The large-scale circulating fluidized bed boiler clean power generation method comprises the steps that a double-cylinder plunger pump with an S pendulum and a coal slime gun with an atomizing function are adopted to convey the coal slime, compressed air is introduced to atomize the coal slime when the coal slime gun runs in order to burn out the coal slime, and a wall box is arranged to seal wind to avoid a gun head from being burned; the water containing rate of the coal slime entering a coal slime conveying system is controlled to be about 30%; and a conveying pipeline of the coal slime conveying system is provided with a material unloading spiral device and a coal slime bin stirring device to be used for uniformizing the coal slime water containing rate to improve material unloading spiral force output. By means of the large-scale circulating fluidized bed boiler clean po