Round type vertical furnace for continuous thermal decomposition of coal

The utility model relates to a round type vertical furnace for continuous thermal decomposition of coal, which is characterized in that the lower part of the furnace body is designed with a central air intake apparatus, and the air inlet of the apparatus and the central coal gas inlet of the furnace body can supply air simultaneously. The lower part of the furnace body is provided with a rotating coke discharging disk. A coke discharging furrow is fixed on the furnace body and extended in the coke disk. The tail part of the coke discharging furrow is provided with a coke groove, and the lower part of the groove is a belt conveyor. The interior of the furnace is provided with an extinguishing pipe for receiving the waste water from the tar recovery plant. The furnace can enlarge the burning diameter under the condition of no change of the diameter of the furnace body. The burning diameter can be changed from D to 2D, and the burning volume can be changed from (D / 2) 2 pai H to (2D / 2) 2 pai H, so that the production quantity is enlarged.