Flue gas self-incineration system of fire resistance test furnace

The utility model relates to the technical field of fire-resistant test furnaces, in particular to a fire-resistant test furnace flue gas self-incineration system which comprises a test furnace hearth, a combustion system, a bottom flue port, a rear wall flue port, a fire-resistant partition wall, a first purification burner, a second purification burner, a third purification burner, a first air supplement nozzle, a second air supplement nozzle, a first combustion area and a second combustion area. By designing the air supplement nozzle, the purification burner and the fire-resistant partition wall in the hearth, flue gas which is originally directly led out from the bottom is guided upwards again and then converged into the flue downwards, so that the time of the flue gas staying in the hearth is prolonged, volatile oily gas, poisonous and harmful gas and the like are subjected to high-temperature secondary incineration or high-temperature cracking, and the combustion efficiency is improved. According to the