Spray device capable of meeting desulfurization towers under different working conditions of CFB (circulating fluidized bed) boiler

The invention relates to a spray device capable of meeting desulfurization towers under different working conditions of a CFB (circulating fluidized bed) boiler and belongs to the environmental protection field. Each spray layer contains a main water inlet pipe, a plurality of branch pipes and a bearing beam for fixation, wherein each main water inlet pipe is a pipe adopting reducing type change, the branch pipes are arranged on pipes with different diameters, and spray heads arranged on the branch pipes; the bearing beams are fixedly connected with the wall of a spray tower; multiple spray layers are fixed in the spray tower, and the vertical positions of the main water inlet pipes of all the spray layers are not overlapped. Through combination of forward-flow spray with reverse-flow spray, angle arrangement of the spray heads and arrangement of directions of the spray layers, the conditions that the desulfurization tower scales, is blocked and has spray dead corners are eliminated fundamentally, so that the