Coal gasifying combustion boilers

The utility model relates to a coal gasifying combustion boiler, which is a boiler changing coal to gas for combusting through a coal gas generating chamber. The utility model is composed of a supporting base, a coal gas generating chamber, a combustion chamber, an explosion-proof door, a closed end of a boiler container, a closed end of a boiler shell, a surrounding flue composed of a bended water pipe, a boiler shell, etc. The utility model is provided with an upper and a lower arches above a middle arch, achieving the heat storage and radiation effects. A fire separating wall and a fire resisting wall are arranged in the surrounding flue; the utilization of the smoke can be increased. An igniting head and a boiler fire detecting pipe are arranged on the lower part of the combustion chamber; the automatic ignition and fire-extinguishing alarm can be realized. The utility model has the advantages of simple structure, high thermal efficiency, complete combustion and low energy consumption; smoke content of the smoke outlet is 80 mg/dry calibration m+3, according with the requirements of environmental protection.