Self-cyclic utilization device for sinter machine tail smoke and tail wind box smoke

Abstract

The invention relates to a self-cyclic utilization device for sinter machine tail smoke and tail wind box smoke. The self-cyclic utilization device comprises a trolley (1), wherein a seal cover (8) is arranged above the trolley (1); the tail of the trolley (1) is provided with a dust-removing cover (9); a plurality of wind box (2) are connected below the trolley (1); a large gas flue (6) is arranged below the air bellows (2); and all the air bellows (2) are communicated with the large gas flue (6). The self-cyclic utilization device is characterized in that the top of the dust-removing cover (9) is closed; the seal cover (8) is internally provided with a clapboard II (11); the seal cover (8) is divided into front and back sections by the clapboard II (11), the front section of the seal cover (8) is closed, and the back section of the seal cover (8) is communicated with the dust-removing cover (9); and a clapboard I (10) is arranged inside the large gas flue (6) and divides the large gas flue (6) into the front and back sections, the front section of the large gas flue (6) is sequentially connected with a dust remover (5), a main draft fan (4) and a chimney (3), and the back section of the large gas flue (6) is connected to the front section of the seal cover (8) through a pipeline.

Description

technical field [0001] The invention relates to an iron ore sintering machine for a blast furnace, in particular to a self-circulating utilization device for tail gas of a sintering machine and tail wind box flue gas, which is used for heat recovery of the tail gas of a sintering machine and wind box flue gas Recycling belongs to the technical field of sintering. Background technique [0002] Before the present invention was made, the existing sintering machine mechanism such as figure 1 shown. It has the following disadvantages: [0003] 1) The flue gas from all bellows of the sintering machine is directly discharged to the chimney through the large flue after dust removal. The heat of the flue gas from the bellows with a higher temperature at the tail of the sintering machine has not been recycled, and the consumption of solid fuel for sintering is high. [0004] 2) The airtightness of the tail of the sintering machine is not good and the pressure is high, so the air le...

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Problems solved by technology

[0003] 1) The flue gas from all bellows of the sintering machine is directly discharged from the chimney through the large flue after dedusting. The heat of the flue gas from the bellows with a higher tail temperature of the sintering machine has not been recycled, and the consumption of solid fuel for sintering is high

[0004] 2) The airtightness of the tail of the sintering machine is not good, and the pressure is high, so the air leakage rate of the tail air box of the sintering machine is high, and the power consumption of sintering tons of ore is high

[0005] 3) The high-temperature tail gas dust concentration formed in the sintering and crushing process is high, and the direct discharge has a bad impact on the environment. It is necessary to add dust removal equipment at the tail before it can be discharged, which increases the equipment cost, and this part of the high-temperature tail gas heat is not recycled

[0006] 4) The top of the sintering machine trolley is all open. During the sintering process of the sintering machine, the exhaust fan directly inhales natural air, resulting in the phenomenon of rapid cooling of the sintered ore on the trolley, high pulverization and return rate, and deterioration of the sintered ore.

The purpose of this patent is to significantly reduce the total amount of waste gas emissions and pollutant emissions produced by the sintering process, and to recover the low-temperature waste heat in the flue gas to save energy consumption in the sintering process. This patent does not involve the high-temperature tail smoke generated during the crushing process The recovery of gas heat and the self-circulation effect of flue gas achieved by segmenting the large flue of the sintering machine

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