Heat storage stable-combustion device of blast furnace gas diffusing tower

The utility model discloses a heat storage stable-combustion device of a blast furnace gas diffusing tower. The heat storage stable-combustion device comprises a shell arranged on the top of a combustor and communicated with the combustor. Heat storage materials are fixed inside the shell which is in a circular platform shape, and the shell is 1 meter high and is a stainless steel shell. When the diffusing tower is in a normal combustion state, the temperature of the heat storage materials in the shell becomes high, the temperature of the heat storage materials can be more than 800 DEG C through heat storage and heat release. When the diffusing amount of the diffusing tower is increased and exceeds the original combustion diffusing capability, namely, when flamelifting happens and gas flows inside the shell, the heat inside the shell can enable the gas to burn continuously, the stable-combustion effect is achieved, and the combustion diffusing ability of the diffusing tower is enhanced. After the combustion effect is improved, an original diffusing tower can be ignited, and a companying gas source is changed into blast furnace gas from converter gas. The flamelifting phenomenon does not happen easily in the gas diffusing tower, the gas can normally and stably burn and diffuse, and safety threat to surrounding people is reduced.