An annular air channel with a high-stability pressure-bearing structure

Abstract

The invention relates to an annular air flue with a high-stability pressure-bearing structure. The long-period utilization of the annular air flue is realized by the high-stability pressure-bearing structure composed of an inner wall, supporting walls, an outer wall, a metal shell and air flowing holes, wherein the metal shell is internally provided with the outer wall, the supporting walls and the inner wall; the inner wall is of an inner arch structure and is formed by connecting a plurality of inner arches which are uniformly arranged; the supporting walls are arranged between the outer wall and the inner wall; the supporting walls are supported at the connection parts of the inner arches of the inner wall; and each supporting wall is of a framework structure provided with the air flowing holes. The annular air flue with the high-stability pressure-bearing structure has the advantages that the inner wall and the outer wall are connected by the plurality of inner arches and the inner wall is formed by connecting a plurality of arch-shaped structures so that the stability is improved; the supporting walls are provided with the air flowing holes so that the deformation of the annular air flue of a dry quenching furnace is reduced and the annular air flue is prevented from collapsing; and the annular air flue with the pressure-bearing structure is formed by the inner and outer walls and the supporting walls and has compact and stable structure and small deformation in a high-temperature coke quenching process, and the service life period is prolonged.

Description

technical field [0001] The invention relates to a heat energy recovery device for dry coke quenching, in particular to an annular air channel with a high-stability pressure-bearing structure realized by using an external pressure structure. Background technique [0002] At present, coke CDQ is an important energy-saving process in the coking industry. The traditional coke quenching method uses water spraying to cool down, which wastes a lot of sensible heat of red coke, produces more coke quenching wastewater, and pollutes the environment. The CDQ method is to load the red coke from the top of the CDQ furnace, and the low-temperature inert circulating gas is blown into the CDQ furnace by the circulating fan to absorb the sensible heat of the red coke, and the cooled coke is discharged from the bottom of the CDQ furnace, and is discharged from the CDQ furnace ring The high-temperature inert gas coming out of the gas channel enters the heat exchange equipment to complete heat ...

AI Technical Summary

Problems solved by technology

[0003] In the application process of CDQ technology, the existing annular gas channel is the weak point in the CDQ furnace. Under the extrusion of high-temperature coke, there are many collapse accidents of the inner wall made of refractory bricks, which seriously affects the dry Service life of coke quenching device

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