Fire path structure of a carbon roasting furnace

Abstract

The invention relates to a flame path structure of an open ring type roasting furnace for anode roasting. The flame path structure comprises two side walls and two end walls, a cavity is defined by the top plate and the bottom plate, and only a guide brick is arranged in the cavity; an observation hole is formed in a fire passage top plate, a fuel gas nozzle can be inserted into the observation hole, and fuel gas can be injected into the observation hole; a guide brick arranged in the cavity, the guide brick transversely penetrating through cavity and two opposite side walls and is used for improving the strength of the side wall and adjusting the air flow direction of the smoke; according to the requirement that the flow distribution of the flue gas is uniform, the guide brick with the proper shape is selected at a reasonable position. According to the fire passage structure, the solid baffling wall in the traditional fire passage structure is removed, and the distribution uniformityof the flue gas can be met by reasonably distributing various special-shaped guide bricks, so that the temperature field distribution in the cavity of the flame path is more uniform, and then the temperature distribution of the anode roasting temperature in the furnace chamber is more uniform, and the quality difference of the roasting anode is reduced.

Description

technical field [0001] The invention relates to a carbon anode roasting furnace in the field of aluminum anode production, in particular to a fire path structure of an open ring type roasting furnace for anode roasting. Background technique [0002] The quality of the anode baking effect directly determines the quality of the anode. Aluminum carbon anode roasting generally adopts an open ring roaster. The open-type ring roaster is composed of several furnace chambers (generally 18-90) with the same structure, and each furnace chamber contains several material boxes and fire channels. The raw anodes are placed in the material boxes in layers. The anode and the anode, between the anode and the furnace wall, as well as the upper and lower sides of the anode are filled with petroleum coke filler as a protective medium. The flue is a cavity structure composed of refractory bricks. The fuel is burned in the flue, and the heat is transferred to the anode in the adjacent material ...

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a fire path structure in order to solve the above technical problems. The purpose is to solve the problem of excessive temperature difference between upstream and downstream in the fire path with baffle wall in the existing carbon anode roasting furnace, uneven temperature distribution and flue gas flow. The resistance is large, the distribution of the gas flow field in the fire channel is uneven, the wall of the fire channel and the guide bricks are subjected to large stress, and they are easily damaged, and it is easy to cause a large quality deviation of the roasted anode in the furnace chamber. The energy consumption of the roaster is high, and the heat utilization efficiency A series of low-level questions

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