Long-acting enamel molten steel heat pipe for on-line dehydrogenation

The utility model relates to a long-acting enamel molten steel heat pipe for on-line dehydrogenation. The utility model is a whole heat pipe comprising a heat end (1), a cold end (2) and a dehydrogenating agent reaction end (3), wherein the whole heat pipe is a heat steel pipe, a middle sealing ring is arranged between the heat end (1) and the cold end (2) of the heat steel pipe, and a cold end sealing ring is arranged between the cold end (2) and the dehydrogenating agent reaction end (3); the dehydrogenating agent reaction end (3) includes a steel mesh arranged in the heat steel pipe, an on-line dehydrogenating agent arranged inside the steel mesh and a filling pipe which is arranged in the steel mesh and extends out of the heat steel pipe; a nut cap is also arranged on the filling pipe at the end extending out of the heat steel pipe; and layers of enamel are coated on the outer wall of the heat steel pipe of the heat end (1) and components arranged at the heat end (1) respectively. The acid and corrosion r