Coal injection thermal compensation device capable of saving blast furnace fuel

The utility model relates to the technical field of blast furnaces, and discloses a coal injection thermal compensation device capable of saving blast furnace fuel, which comprises a pulverized coal heater and a heating furnace, a pulverized coal feed port of the pulverized coal heater is communicated with a feeding device, and a pulverized coal discharge port of the pulverized coal heater is connected with a pulverized coal collector. A flue gas outlet of the pulverized coal heater is fixedly provided with an air gas heater through a high-temperature flue gas exhaust pipeline, a blast furnace gas inlet of the heating furnace is communicated with a blast furnace gas connector through a pipeline, and the pipeline penetrates through the air gas heater. An air inlet of the heating furnace is connected with the outdoor air connector through a pipeline, and the pipeline penetrates through the air and gas heater. According to the utility model, the problems that the combustion efficiency of pulverized coal is low,