Circulating water cooling structure and method for coke discharging device of dry distillation furnace

Abstract

The invention relates to a circulating water cooling structure and method for a coke discharging device of a dry distillation furnace. The coke discharging device comprises a shell, a coke dischargingroller, a rotor shaft and a driving device, wherein the driving device drives the coke discharging roller to rotate through the rotor shaft, a plurality of hoppers are arranged on the coke discharging roller in the axial direction and the circumferential direction, and the rotor shaft is a rotor hollow shaft; and the portion, except for the hoppers, of a roller body of the coke discharging rolleris provided with a water-cooling jacket composed of an inner-layer roller body and an outer-layer roller body, the inner-layer roller body is provided with water inlets to be connected with a water inlet pipe and is provided with water outlets to be connected with a water outlet pipe, and the water inlet pipe and the water outlet pipe are arranged in the rotor hollow shaft in a penetrating mode and are connected with an external circulating water inlet pipeline and an external circulating water return pipeline through rotary sealing joints correspondingly. According to the structure and the method, circulating cooling water is introduced into the coke discharging roller to play a role in cooling the rotor shaft and the coke discharging roller of the coke discharging device and play a rolein cooling and complementally quenching semi-coke in the hoppers, so that smoothness of discharging and uniformity of temperature are guaranteed, and the service life of the coke discharging device is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment cooling, in particular to a circulating water cooling structure and method for a carbonization furnace coke discharge device. Background technique [0002] The discharge device of the externally heated low-rank pulverized coal continuous retort furnace is installed at the bottom of the retort furnace to realize continuous discharge of powdery semi-coke, which requires uniform discharge and good controllability. The Chinese patent application number 201510465618.X discloses "a discharge device for continuous carbonization furnace", which realizes the continuous discharge of semi-coke through the coke discharge drum, which is connected to the driving device through the rotating shaft; application number The Chinese patent of 201510468402.9 discloses "a drum structure of a discharge device". The discharge drum is composed of a plurality of single-row drums arranged axially on the rotatin...

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Problems solved by technology

[0003] In actual working conditions, due to the high discharge temperature of the retort furnace (up to 300°C or above), and the large length of the discharge device (≧3m), the shaft will expand when heated, and the semi-coke material at the top The deformation of the rotating shaft will make the gap between the rotating shaft and the shell of the discharge drum uneven, which will affect the uniformity of the discharge. Production

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