Heating passage used for combination method titanium sponge distillation production

The invention discloses a heating passage used for combined method titanium sponge distillation production. The heating passage comprises a passage pipe, a shell, a vacuum pumping pipe, lifting rings,temperature measuring casing pipes and short connecting flanges. Multiple heating element casing pipes are arranged on 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 casing pipe. A high-temperature-resisting heat insulation coating is arranged on the inner surface of the shell. Strengthening ribs are arranged between the inner wall of the shell and the outer wall of the passage pipe. By means of the heating passage used for combined method titanium sponge distillation production, passage andheating integration is achieved, lifting is facilitated, and the number of using times of a crown block is reduced; and cold and heat passages at the two ends are connected through graphite pad sealing bolts instead of a weld