Smoke and dust free environment protection boiler

The utility model relates to a smoke and dust free environment protecting boiler, which belongs to industrial and civil boiler type products. A water jacket is arranged in a boiler body, and a ring type inverse-burning outer flue is formed between the boiler body and the water jacket. An arch type circulating and inverse-burning device, an inverse-burning device with a conical body and a water pipe are arranged in the water jacket. A cyclone dust collector is arranged in the inverse-burning outer flue, and an exhaust opening of the cyclone dust collector and a draught fan are arranged on the outside of the boiler body and communicated with the inverse-burning outer flue. Both ends of a cyclone dust-removal flue are matched and connected with the draught fan and a washing dust collector, and a cyclone dust-removal mouth is arranged below the cyclone dust collector. The rear part of the washing dust collector is orderly communicated with a sedimentation dust collector and a louver dust collector. The utility model has the advantages of good dust removing effect, sufficient and complete combustion and high thermal efficiency, and the utility model is favorable for environmental protection.