Transverse boiler coal economizer composite dust-removing device

The utility model discloses a transverse boiler coal economizer composite dust-removing device, characterized in that; a dust-removing device is compounded in the front or at the back of a transverse boiler coal economizer; the device is provided with a box body whose both ends are communicated with a smoke channel; at least three rows of smoke dust cut-off components are arranged in the box; a dust collecting bucket is arranged at the position of the smoke dust cut-off components corresponding to the bottom of the coal economizer. The device joins the heat transferring and dust removing functions of the boiler coal economizer organically, and dust is removed from air in the process of flowing through the coal economizer. The device can decrease the initial dust-removing concentration by 81 percent to 93 percent, which meets the new international discharge requirements. The utility model has the advantages of reasonable structure, low energy consumption, high comprehensive dust removing efficiency, etc.