Air inlet system for circular cooler and annular air passage and annular liquid tank

Abstract

The invention discloses an air inlet system for a circular cooler, which comprises an annular air pipe and a branched air pipe communicated with the annular air pipe, wherein the branched air pipe is communicated with an annular air passage; an outlet of the annular air passage is communicated with an air inlet pipe of a trolley; the air inlet pipe of the trolley is communicated with the trolley;the annular air passage consists of an annular liquid tank and a door-shaped sealing device, wherein the door-shaped sealing device is connected to the air inlet pipe of the trolley; a sealing cover plate of the door-shaped sealing device covers on the annular liquid tank; an inner annular plate and an outer annular plate of a door-shaped air passage of the door-shaped sealing device extend downwards to the underside of the liquid level of the annular liquid tank; an annular inner liquid tank and an annular outer liquid tank of the annular liquid tank are communicated with a drain pipe in a high-temperature region of the circular cooler respectively; and the drain pipe discharges liquid close to the high-speed vaporization temperature in the annular inner liquid tank and the annular outerliquid tank. The invention also discloses an annular air passage and an annular liquid tank. The air inlet system for the circular cooler can prevent hot flue gas from continuously heating partial liquid in the process of reutilizing residual heat, prevent the liquid in the annular liquid tank in the high-temperature region of the circular cooler from vaporizing due to over-high temperature, and guarantee normal operation of the circular cooler.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular to an air inlet system, an annular air duct, and an annular liquid tank of an annular cooler. Background technique [0002] In iron and steel smelting, ring coolers are used to cool sintered materials. The ring cooler is in the shape of a ring as a whole, and the sintered material runs in the ring cooler for a week through a trolley to complete cooling and unloading. see figure 1 , is the radial (pointing to the center of the annular cooler) cross-sectional view of the annular cooler 10, the sintered material is laid on the grate plate 12 of the trolley 11, and the trolley 11 rotates at a constant speed around the center of the annular cooler 10. Simultaneously, the cold wind blown by blower (not shown in the figure) enters trolley through grate plate 12 from bottom to top, and after carrying out sufficient heat exchange with the material on grate plate 12, discharges from e...

AI Technical Summary

Problems solved by technology

[0006] see image 3 , is a radial cross-sectional view of the annular air duct of the annular cooler 10, hot flue gas with a certain temperature passes through the annular air duct 33 from bottom to top, and the continuous passage of the hot flue gas will heat the annular air duct liquid tank of the annular water tank 34 The ring plate 341 and the outer ring plate 342 of the annular air channel liquid tank, the inner ring plate 341 of the annular air channel liquid tank is on the side close to the center of the annular cooler 10 relative to the outer ring plate 342 of the annular air channel liquid tank, so that the liquid in the annular water tank 34 When the temperature rises, the liquid will vaporize when it reaches a certain temperature, and the vaporized liquid enters the trolley (not shown in the figure) along with the hot flue gas, so that the dust material sticks to the grate plate (not shown in the figure) of the trolley, affecting the grate plate (not shown in the figure). Ventilation of the plate will also cause the dust material on the lower plate (not shown in the figure) of the trolley to stick to the lower plate, affecting the static seal of the trolley

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