Dust removal and desulphurization device of roasting kiln

Abstract

TThe invention discloses a dust removal and desulphurization device of a roasting kiln, which comprises a flue gas dust removal tower, a desulphurization tower, a circulating neutralizing tank, an overflow pipe, a slag discharge pipe, an air blower, a high-pressure circulating pump and an annular dust hood, wherein the upper part of the desulphurization tower is provided with a fresh air discharge outlet, and the lower part of the desulphurization tower is provided with an impact bathing tank; the inner upper part of the flue gas dust removal tower is provided with a central spray header, and the inside of the tower is provided with a plurality of obconical liquid collecting boards; the flue gas dust removal tower is sheathed into the desulphurization tower; the upper and lower parts of a space between the inner wall of the desulphurization tower and the outer wall of the flue gas dust removal tower are respectively provided with a gas-liquid separator and a packing layer, and peripheral spray headers are arranged below the gas-liquid separator and the packing layer; the impact bathing tank is provided with the slag discharge pipe and the overflow pipe, the slag discharge pipe is connected with the circulating neutralizing tank, and the overflow pipe is connected with the slag discharge pipe; the air blower is connected with the fresh air discharge outlet, the water inlet of the high-pressure circulating pump is connected with the circulating neutralizing tank, and the water outlet of the high-pressure circulating pump is respectively connected with the central spray header and the peripheral spray headers by water pipes; and the annular dust hood is arranged at the top of the roasting kiln, and is connected to the top of the flue gas dust removal tower through a flue gas inlet pipe.

Description

technical field [0001] The invention relates to a dust removal and desulfurization device, in particular to a roasting kiln dust removal and desulfurization device. Background technique [0002] With the process of industrial modernization in our country, the dust removal and sulfur dioxide removal of flue gas in the production of kilns is one of the urgent problems to be solved in environmental protection work, especially the sulfur dioxide contained in the flue gas is discharged into the atmosphere without treatment, and it is closely related to the atmosphere. The combination of middle water and steam forms acid rain, which will pollute the water source and land on which people live, and seriously affect crops and the ecological environment. At present, a variety of desulfurization and dust removal devices have appeared on the market. The disadvantages are: only by a simple water impact, the time for the flue gas to collide with water, water splashes or blisters is short,...

AI Technical Summary

Problems solved by technology

[0002] With the process of industrial modernization in our country, the dust removal and sulfur dioxide removal of flue gas in kiln production is one of the urgent problems to be solved in environmental protection work, especially the sulfur dioxide contained in the flue gas, which is discharged into the atmosphere without treatment. The combination of medium water and steam forms acid rain, which will pollute the water and land on which people live, and seriously affect crops and the ecological environment

At present, a variety of desulfurization and dust removal devices have appeared on the market. The disadvantages are: only by a simple water impact, the time for the flue gas to collide with water, water splashes or blisters is short, and the dust and sulfur dioxide in the flue gas will collide with water. Insufficient affinity, low dust removal and desulfurization efficiency, only suitable for small and medium-sized kilns, high operating costs, not conducive to promotion

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