Vertical molten salt heat carrier heating furnace for experiment

The utility model relates to the technical field of heat carrier heating furnaces, in particular to a vertical molten salt heat carrier heating furnace for experiments, which comprises a furnace bottom, a radiation section, a radiation section coil pipe, a middle collecting pipe, a convection section, a convection section coil pipe, an inlet collecting pipe, an explosion door, a flue, a high-temperature air preheater, a smoke outlet and an outlet collecting pipe. A burner connector is arranged at the bottom of the furnace and is used for mounting a high-temperature low-nitrogen gas burner; the radiation section is provided with a radiation section coil pipe, and an outlet of the radiation section coil pipe is communicated with the outlet collecting pipe; the convection section is provided with a convection section coil pipe, an inlet of the convection section coil pipe is communicated with the inlet collecting pipe, an outlet of the convection section coil pipe is communicated with an inlet of the radiation s