Novel inner ring wall structure

Abstract

The invention relates to a novel inner ring wall structure. The novel inner ring wall structure comprises an inner ring wall arranged in an annular air duct region of a gas-solid heat exchange type vertical furnace; the inner ring wall is formed by building a plurality of refractory material building blocks which are arranged in a high direction, the upper surface and the lower surface of the refractory material building blocks are inclined planes inclined outwards and upwards, and every two adjacent refractory material building blocks are in occlusion connection through a groove tongue structure; and a brick groove and a brick tongue matched with the groove tongue structure is formed, and the has a vortex-shaped structure which is outwards diffused. According to the novel inner ring wallstructure, the inclined surface and the vortex-shaped brick groove and the brick tongue are formed in the refractory material building blocks forming the inner ring wall, so that the inner ring wall can be subjected to displacement outwards when the inner ring wall bears the lateral force, the annular sliding structure at the top of the inner ring wall absorbs the rotating displacement generated by expansion from the lower part, so that the inner ring wall has a self-stabilizing function, the influence of thermal expansion and lateral force on the wall body is effectively resisted, and the service life of the inner ring wall is prolonged.

Description

technical field [0001] The invention relates to a furnace body structure of a gas-solid heat exchange type shaft furnace, in particular to a novel inner ring wall structure. Background technique [0002] In the furnace body structure of a gas-solid heat exchange shaft furnace such as a CDQ oven, the inner ring wall located in the annular air duct area is prone to damage and outward tilt. The reasons include the following points: 1) When the materials in the furnace fall The impact of the inner ring wall; 2) the lateral force extrusion generated after the furnace is filled with materials; 3) the cracking of the inner ring wall due to thermal expansion during repeated shutdowns for maintenance. [0003] At present, the method of strengthening the structural strength of the annular air duct is often to add a complex groove tongue structure on the wall bricks of the inner ring wall, so that the brick walls are fixed in their respective positions. Although this method can enhanc...

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