Cooling water jacket of petroleum coke can-type calcine furnace

The invention discloses a petroleum coke pot typed calciner cooling water jacket, comprising a step-one heat exchanging device which is used for enclosing a high-temperature material passage; the step-one heat exchanging device comprises a ring-shaped upper container which is provided with a water outlet, a ring-shaped lower container which is provided with a water inlet, a plurality of heat exchanging pipes which are fixedly connected with the upper container and the lower container and communicated with each other respectively, a heat guiding baffle which is fixedly connected between two adjacent heat exchanging pipes; the high-temperature material passage which is enclosed by the step-one heat exchanging device is internally provided with a step-two heat exchanging device. The cooling water sleeve has good rigidity, and is not easy to generate thermal deformation; furthermore, the heat exchanging area is large and the cooling and heat exchanging effect is good; by increasing the step-two heat exchanging de