Flue gas treatment device for CFB (circulating fluid bed) boiler

The utility model relates to the technical field of flue gas treatment, in particular to a CFB boiler flue gas treatment device which comprises a shell, a gas inlet pipe, a spraying assembly and a flue gas stirring mechanism. A reaction bin is arranged in the shell, an exhaust port communicated with the reaction bin is formed in one side of the shell, and the air inlet pipe is arranged on the side wall of the bottom of the shell; the spraying assembly is arranged at the top of the reaction bin; the flue gas stirring mechanism is mounted in the reaction bin and is used for mixing flue gas and a desulfurizing agent; the CFB boiler flue gas treatment device further comprises a backflow mechanism, and reactants settled at the bottom of the reaction bin are pumped into the spraying assembly for secondary utilization. Through cooperative arrangement of the gas inlet pipe, the spraying assembly, the flue gas stirring mechanism and the backflow mechanism, the convection speed of flue gas and a desulfurizing agent is