Boiler exhaust -gas treatment apparatus

The utility model provides a boiler exhaust -gas treatment apparatus, including cyclone, collection chamber and the flue that is used for arranging the pipe connection with the boiler, the flue, the collection chamber, cyclone communicates in proper order, cyclone's inside is provided with the vertical supplementary dust leg of placing, the inside of supplementary dust leg is fixed with the screw-tupe spout, the screw -tupe spout coils into the tube -shape, and the height is the same with supplementary dust leg, the notch level of screw -tupe spout and towards the vertical central line of screw -tupe spout, the tank bottom lateral wall of screw -tupe spout and the laminating of the inside wall of supplementary dust leg, cyclone's bottom is connected with the dust collection box, the inside wall on flue top is provided with the ceramic heat exchanger. Through setting up the ceramic heat exchanger, retrieve the heat that the high temperature flue gas was taken away as far as, big or small dust can be acceptd to