Flue gas purification device for waste incineration

The utility model relates to a flue gas treatment system and particularly relates to a flue gas purification device for waste incineration. An air pipe between an air filter and a fan is internally provided with an activated carbon feeding hole, and activated carbon is fed into the air pipe from the activated carbon feeding hole by using a quantitative activated carbon feeding system. After the activated carbon is fed into the air pipe and mixed with air, the activated carbon is mixed with air further by the fan, and after the activated carbon is mixed with air uniformly, the mixture is fed into a flue duct with a flue gas inlet. Therefore, the mixing and distributing uniformity of the activated carbon in the flue gas can be improved, and the effect of adsorbing dioxin and heavy metals by using the activated carbon can be enhanced. In addition, the fan can play a role of supplying power, thus the long-distance delivery of the activated carbon can be realized, and the blockage of the pipe can be avoided. The flue gas purification device provided by the utility model is very easy and convenient to use.