Lime kiln waste gas dedusting and cooling device

Abstract

The utility model discloses a lime kiln waste gas dedusting and cooling device which comprises a box body, and a gas passing cylinder is coaxially sleeved in the box body through a cavity separating plate; a dust removal cavity and a cooling cavity are formed below and above the cavity partition plate respectively; an air passing cavity is formed in the air passing cylinder; an air inlet, a water inlet and a water outlet are formed in the box wall of the box body, and a dust outlet and an air outlet are formed in the bottom and the top of the box body respectively; dust filtering mesh holes are formed in a cylinder body, located below the cavity partition plate, of the air passing cylinder, and ventilation mesh holes are formed in a cylinder body, located above the cavity partition plate, of the air passing cylinder; the dust removal cavity is communicated with the air passing cavity through the dust filtering meshes, and the air passing cavity is communicated with the cooling cavity through the ventilation meshes; the air passing cylinder is rotatably arranged in the axial direction of the air passing cylinder, a dust removing brush is fixedly arranged on the inner wall of the box body corresponding to the dust filtering meshes, and a stirring piece is fixedly arranged on the outer wall face, corresponding to the ventilation meshes, of the air passing cylinder. The utility model has the advantages of small occupied space and low water consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali making equipment, in particular to a lime kiln waste gas dust removal and cooling device. Background Art

[0002] During the production process of lime kilns, the waste gas generated needs to be dusted and cooled before being discharged or recycled. Currently, dust is mostly removed by filtering or by a water washing tower. The former filter is easily clogged by dust, and needs to be connected to a cooling system, which takes up a lot of space; the latter takes up less space and can achieve dust removal and cooling at the same time, but the wastewater generated contains a large amount of dust precipitation and needs to be treated before reuse, which consumes a lot of water. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a lime kiln exhaust gas dust removal and cooling device, which occupies a small space and consumes little water.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model is a lime kiln waste gas dust removal and cooling device, comprising a box body, in which an air cylinder is coaxially sleeved through a cavity partition plate; the lower part and the upper part of the cavity partition plate are respectively a dust removal chamber and a cooling chamber, and the air cylinder is an air passage chamber; the box wall of the box body is provided with an air inlet corresponding to the dust removal chamber, the box wall is provided with a water inlet and a water outlet corresponding to the cooling chamber, the bottom of the box body is a dust outlet, and the top of the box body is an air outlet; the cylinder body of the air cylinder located below the cavity partition plate is provided with a dust filter mesh, and the cylinder body of the air cylinder located above the cavity partition plate is provided with a breathable mesh; the dust removal chamber is connected to the air passage chamber through the dust filter mesh, and the air passage chamber is connected to the cooling chamber through the breathable mesh; the air passage cylinder is rotatably arranged along its axial direction, a dust removal brush is fixedly arranged on the inner wall of the box body corresponding to the dust filter mesh, and an agitator is fixedly arranged on the outer wall surface of the air passage cylinder corresponding to the breathable mesh.

[0005] Furthermore, a water retaining cylinder is arranged in the air cylinder, the lower end of the water retaining cylinder is fixedly connected to the boundary between the dust filter mesh and the dust filter mesh, and the upper end of the water retaining cylinder is arranged higher than the horizontal plane in the cooling chamber.

[0006] Furthermore, the stirring member includes a plurality of blades, and the plurality of blades are arranged around the outer wall of the air cylinder at equal intervals.

[0007] Furthermore, the leaf piece is arranged at an inclination, and is inclined downward toward the rotation direction of the air cylinder.

[0008] Furthermore, the water inlet and the water outlet are respectively located on two opposite sides of the box body.

[0009] Furthermore, the water inlet is arranged lower than the water outlet.

[0010] Beneficial effects: The utility model is a lime kiln waste gas dust removal and cooling device. The waste gas first passes through the filter to remove dust, and then passes through cooling water to achieve dust removal and cooling effects, reducing the contact between dust and cooling water. The cooling water can be directly recycled to reduce water consumption. Internal contact cooling improves cooling efficiency, does not require an additional cooling system, and reduces space occupation. By rotating the air cylinder, the filter can be cleaned and the cooling water can be stirred at the same time, avoiding filter blockage and improving cooling efficiency. Therefore, on the basis of achieving better dust removal and cooling, it occupies less space and consumes less water. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 The utility model is a schematic diagram of the overall structure of an embodiment. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the accompanying drawings.

[0013] As attached Figure 1 The lime kiln waste gas dust removal and cooling device comprises a box body 1, wherein the box body 1 is coaxially sleeved with an air cylinder 5 through a cavity partition plate 2; the lower and upper parts of the cavity partition plate 2 are respectively provided with a dust removal cavity 3 and a cooling cavity 4, and the air cylinder 5 is provided with an air passage cavity 6; the box wall of the box body 1 is provided with an air inlet 11 corresponding to the dust removal cavity 3, and the box wall is provided with a water inlet 14 and a water outlet 15 corresponding to the cooling cavity 4, the bottom of the box body 1 is a dust outlet 12, and the top of the box body 1 is an air outlet 13; the air cylinder 5 is provided with a dust removal cavity 3 and a cooling cavity 4, and the air passage cavity 6 is provided in the air cylinder 5 ... dust removal cavity 3 is provided with an air inlet 11 and a cooling cavity 4, and the air passage cavity 6 is provided in the air cylinder 5; the dust removal cavity 3 is provided with an air inlet 11 and a cooling cavity 4, and the air passage cavity 6 is provided in the air cylinder 5; the dust removal cavity 3 is provided with an air inlet 11 and a cooling cavity 4, and the air passage cavity 6 is provided in the air cylinder 5; the dust removal cavity 3 is provided with an air inlet 11 and a cooling cavity 4, and the air passage cavity 6 is provided in the air cylinder 5; the dust removal cavity 3 is provided with an air The cylinder body located below the partition plate 2 is provided with a dust filter mesh 51, and the cylinder body of the air cylinder 5 located above the partition plate 2 is provided with a breathable mesh 52; the dust removal chamber 3 is connected to the air chamber 6 through the dust filter mesh 51, and the air chamber 6 is connected to the cooling chamber 4 through the breathable mesh 52; the air cylinder 5 is rotatably arranged along its axial direction, and a dust removal brush 7 is fixedly arranged on the inner wall of the box body 1 corresponding to the dust filter mesh 51, and an agitator 9 is fixedly arranged on the outer wall of the air cylinder 5 corresponding to the breathable mesh 52. Among them, the motor driving the air cylinder can be fixedly installed relative to the inner wall of the box body through a bracket.

[0014] This solution introduces the gas discharged from the lime kiln into the dust removal chamber from the air inlet, and filters out the solid particles in the exhaust gas through the dust filter mesh. The filtered gas flows upward from the air chamber, enters the cooling chamber through the air-permeable mesh, and directly contacts with the flowing cooling water to achieve cooling, and finally is discharged from the air outlet on the top of the box. During the process, through the rotation of the air cylinder, the dust removal brush sweeps the surface of the dust filter mesh, sweeps off the dust adhering to the surface of the inner filter, and discharges it from the dust outlet at the bottom of the box to avoid dust accumulation and blockage of the filter. At the same time, the rotation of the air cylinder will also drive the rotation of the agitator, thereby disturbing the circumferential flow of cooling water in the cooling chamber, prolonging the contact time between the gas and the cooling water, and improving the cooling effect. The dust content in the cooling water is extremely low, and it can be recycled after slight treatment, or directly recycled, reducing the cost of wastewater treatment and the amount of water required to maintain normal operation.

[0015] A water retaining cylinder 8 is arranged in the air cylinder 5, the lower end of the water retaining cylinder 8 is fixedly connected to the boundary of the dust filter mesh 51 and the dust filter mesh 51, and the upper end of the water retaining cylinder 8 is arranged higher than the horizontal plane in the cooling chamber 4. The water retaining cylinder can prevent the cooling water from flowing back into the dust removal chamber below, and an annular air distribution cavity is formed between the water retaining cylinder and the inner wall of the upper end of the air cylinder, ensuring that the gas is evenly diffused from the upper end to the surroundings, and then evenly distributed in the cooling water, thereby improving the ventilation efficiency and cooling effect.

[0016] The stirring member 9 includes a plurality of blades, and a plurality of the blades are arranged around the outer wall of the air cylinder 5 at equal intervals. The blades are arranged at an angle, and they are inclined downward toward the rotation direction of the air cylinder 5. The gas sprayed into the cooling water can be evenly distributed in the gaps between the blades to avoid excessive fluctuations in the water surface in the cooling chamber. Some of the blades rotate with the air cylinder, thereby stirring the cooling water in the cooling chamber to form a vortex. By setting the blades at an angle, a downward fluid can be formed in the part close to the air cylinder, and then the gas sprayed from the breathable mesh is first pressed down by the water flow, then floats upward with the fluid flow, and finally emerges from the liquid surface, effectively prolonging the contact time between the gas and the cooling water, and improving the heat exchange efficiency and the cooling effect.

[0017] The water inlet 14 and the water outlet 15 are respectively located on opposite sides of the housing 1 to extend the time the cooling water stays in the cooling chamber. The water inlet 14 is set lower than the water outlet 15 to limit the lower limit of the water level to ensure that the ejected gas can pass through the cooling water before being discharged. By controlling the flow of the water inlet and outlet, the upper limit of the water level can be controlled to prevent the water level from being too high and entering the air passage chamber.

[0018] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A lime kiln exhaust gas dust removal and cooling device, characterized in that: The invention comprises a box body (1), wherein an air cylinder (5) is coaxially sleeved with a cavity plate (2) in the box body (1); a dust removal chamber (3) and a cooling chamber (4) are respectively provided below and above the cavity plate (2), and an air passage chamber (6) is provided in the air cylinder (5); an air inlet (11) is provided on the box wall of the box body (1) corresponding to the dust removal chamber (3), and a water inlet (14) and a water outlet (15) are provided on the box wall corresponding to the cooling chamber (4); a dust outlet (12) is provided at the bottom of the box body (1), and an air outlet (13) is provided at the top of the box body (1); the air cylinder (5) is located on the cavity plate (2) and is provided with a plurality of air passage chambers (6) and a plurality of air passage chambers (6) in the air cylinder (5); 2) The cylinder body below is provided with a dust filter mesh (51), and the cylinder body of the air cylinder (5) located above the partition plate (2) is provided with a breathable mesh (52); the dust removal chamber (3) is connected to the air chamber (6) through the dust filter mesh (51), and the air chamber (6) is connected to the cooling chamber (4) through the breathable mesh (52); the air cylinder (5) is rotatably arranged along its axial direction, and a dust removal brush (7) is fixedly arranged on the inner wall of the box body (1) corresponding to the dust filter mesh (51), and an agitator (9) is fixedly arranged on the outer wall surface of the air cylinder (5) corresponding to the breathable mesh (52).

2. A lime kiln exhaust gas dust removal and cooling device according to claim 1, characterized in that: A water retaining cylinder (8) is arranged inside the air cylinder (5), the lower end of the water retaining cylinder (8) is fixedly connected to the boundary between the dust filter mesh hole (51) and the dust filter mesh hole (51), and the upper end of the water retaining cylinder (8) is arranged higher than the horizontal plane inside the cooling chamber (4).

3. A lime kiln exhaust gas dust removal and cooling device according to claim 2, characterized in that: The stirring member (9) comprises a plurality of blades, and the plurality of blades are arranged at equal intervals around the outer wall of the air cylinder (5).

4. A lime kiln exhaust gas dust removal and cooling device according to claim 3, characterized in that: The leaf pieces are arranged obliquely, and are inclined downwardly toward the rotation direction of the air cylinder (5).

5. A lime kiln exhaust gas dust removal and cooling device according to claim 4, characterized in that: The water inlet (14) and the water outlet (15) are respectively located on two opposite sides of the box body (1).

6. A lime kiln exhaust gas dust removal and cooling device according to claim 5, characterized in that: The water inlet (14) is arranged lower than the water outlet (15).

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