Heating passage for titanium sponge distillation production by combined method

A heating passage for combined titanium sponge distillation production comprises a passage pipe, a shell, an evacuation pipe, a lifting ring, a temperature measuring sleeve and a short-circuit flange.A plurality of heating element sleeves are arranged at the top of the shell and are arranged in two rows in the axial direction; a heating element arranged in the shell is arranged in each heating element sleeve; a high-temperature-resistant heat insulation coating is arranged on the inner surface of the shell; a reinforcing rib is arranged between the inner wall of the shell and the outer wall of the aisle pipe; according to the utility model, integration of aisle and heating is realized, hoisting is convenient, and the use frequency of a crown block is reduced; graphite pad sealing bolt connection is adopted for replacing a welding connection mode for the cold-end passage and the hot-end passage, the production time is saved by about 8 hours, the sealing problem of welding connection isavoided, the air inlet pr