Enhanced heat exchange device for sinter of circular cooler

Abstract

The invention discloses an enhanced heat exchange device for sinter of a circular cooler, comprising a trolley and the circular cooler arranged at the bottom of the trolley, wherein the trolley is internally provided with a plurality of enhanced wind boxes of which the side walls are provided with a plurality of guiding channels, the outlets of the guiding channels correspond to different parts in the trolley from bottom to top, and cold air is blown into the trolley by the guiding channels after blasted into the enhanced wind boxes by the circular cooler. By the arrangement of the enhanced wind box inside the trolley of the circular cooler, the heat exchange area is increased, in addition, due to the adoption of a variable-frequency air blower, the volume of blast can be adjusted through a control device according to a temperature sensor at the tail end of a circular cooling cover, the mass flow of smoke can be improved as much as possible on the basis of ensuring the temperature inside the circular cooling cover, and the recovery rate of hot energy of sinter is improved.

Description

Technical field [0001] The invention relates to the field of steel production, in particular to an enhanced heat exchange device for sintered ore of an annular cooler. Background technique [0002] In the steel production process, the energy consumption of the sintering process is second only to the ironmaking process. At present, in the cooling process of the ring cooler, the general method is to blow cold air from the bottom of the ring cooler trolley to cool the sinter. Because the sinter is accumulated in the ring cooler and the sinter is relatively dense, the heat exchange effect is Poor, resulting in low temperature of the flue gas of the annular cooler and low high-temperature flow. This part of the waste heat has been recycled by a few steel plants, but it accounts for less than 50% of the overall flue gas waste heat of the annular cooler. see figure 1 (Zone I 9), and more than half of the flue gas (Zone II 10) due to its low temperature, most of it is currently discharg...

AI Technical Summary

Problems solved by technology

At present, in the cooling process of the annular cooler, the general method is to blow cold air from the bottom of the annular cooler trolley to cool the sintered ore. Since the sintered ore accumulates high in the annular cooler and the sintered ore is relatively dense, the heat transfer effect Poor, resulting in low flue gas temperature of the annular cooler and low high-temperature flow rate, this part of waste heat has been recycled by a few steel mills, but it accounts for less than 50% of the waste heat of the flue gas of the entire annular cooler. See figure 1 (I District 9), and account for more than half of the flue gas (II District 10) due to its low temperature, most of them are directly discharged into the atmosphere at present, causing a waste of energy and increasing air pollution

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