Assembled smoke purifier

The utility model provides an assembled smoke purifying device. The smoke enters a dust removal desulfurizing device body from the entrance of a smoke reheating device. The smoke enters a dust removal desulfurizing cylinder through an adjustable cyclone board. A plurality of channels of sprayers spray alkali liquid in the cylinder. The alkali liquid is atomized and forms a water film on the cylinder wall. The water and the gas are sufficiently contacted. The water and the gas are separated in a dehydration cylinder. The smoke which is purified and dehydrated returns to the smoke reheating device. The smoke is discharged from the exit of the smoke reheating device to a draught fan and then to a chimney.