Radiant tube heating device is mainly composed of radiant tube body, heat exchanger and burner, etc.Radiant tube ontology is to release the fuel combustion heat radiation to strip of key components, waste heat recovery apparatus with u-shaped radiant tube in a horizontal heat treatment furnace is the most widely used;Tube heat exchanger is radiation heating device is one of the two core components, its main function is to improve the overall life of the radiant tube, its temperature is required to reach as high as possible air preheat temperature and flue gas emission temperature as low as possible, and to reduce the resistance loss of preheated air, so as to ensure that radiant tube from the dangers of the environment, so as to improve the life of radiant tube;Burner is radiant tube heating device of two core of another core component, it controls the radiant tube heating power, thermal efficiency, the temperature distribution and mastered the radiant tube service life.