Constant-temperature dust removal device

Abstract

The utility model discloses a constant-temperature dust removal device in the technical field of flue gas treatment, which comprises a constant-temperature dust removal box arranged in a flue gas exhaust pipe, a cooling assembly used for preventing the temperature of flue gas entering the constant-temperature dust removal box from being too high is arranged at the gas inlet end of the constant-temperature dust removal box, and the cooling assembly comprises a cooling box arranged on the constant-temperature dust removal box. A pre-cooling box is arranged at the air inlet end of the cooling box, and an air collecting hood is arranged at the air inlet end of the pre-cooling box; the utility model solves the problems that the dust in the smoke exhaust pipe needs to be collected and separated by using a dust removal device because a lot of dust exists in the existing discharged smoke and the dust seriously affects the environment, but the smoke in the smoke exhaust pipe carries a lot of heat, so that the dust in the smoke exhaust pipe is difficult to clean, and the dust in the smoke exhaust pipe is difficult to clean. The heat can raise the temperature of the dust removal device, and parts in the dust removal device are easy to damage in a high-temperature environment.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a constant temperature dust removal device. Background Art

[0002] Flue gas, a mixture of gases and dust, is the primary cause of atmospheric pollution in residential areas. Flue gas has a complex composition, including gases such as water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. Dust includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, flue gas pollution is a complex combination of multiple toxicants. The harmfulness of smoke to the human body is related to particle size. Dust particles with a diameter of less than 10 μm are most harmful, with dust particles between 1 and 2.5 μm being the most hazardous.

[0003] There is a lot of dust in the existing flue gas, which will seriously affect the environment. This requires the use of a dust removal device to collect and separate the dust in the exhaust pipe. However, the flue gas in the exhaust pipe carries a lot of heat, which will cause the dust removal device to heat up. In a high temperature environment, the internal components of the dust removal device are prone to damage.

[0004] Therefore, those skilled in the art provide a constant temperature dust removal device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present invention is to provide a constant temperature dust removal device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a constant temperature dust removal device, comprising a constant temperature dust removal box installed in a smoke exhaust pipe, the air inlet end of the constant temperature dust removal box is provided with a cooling component for preventing the flue gas from entering the constant temperature dust removal box at too high a temperature, the cooling component comprises a cooling box installed on the constant temperature dust removal box, the air inlet end of the cooling box is provided with a pre-cooling box, the air inlet end of the pre-cooling box is provided with an air collecting hood; a cooling component for cooling the flue gas is installed inside the cooling box, and a pre-cooling component for the initial cooling of the flue gas is provided inside the pre-cooling box.

[0007] Preferably: the cooling assembly includes air guide plate 1 and air guide plate 2, the air guide plate 1 is located below the air guide plate 2, a cooling channel for flue gas cooling is formed between the air guide plate 1 and the air guide plate 2, and a cooling cavity for cold water to pass through is respectively provided inside the air guide plate 1 and the air guide plate 2.

[0008] Preferably, the pre-cooling assembly comprises an inner ring plate and an outer ring plate installed inside the pre-cooling box, and a pre-cooling channel is formed between the inner ring plate and the outer ring plate.

[0009] Preferably: a connecting pipe is connected between the inner ring plate and the outer ring plate, and a water guide cavity for passing cold water is provided inside the inner ring plate and the outer ring plate respectively, and the water guide cavities on the inner ring plate and the outer ring plate are connected through the connecting pipe.

[0010] Preferably, a spirally arranged water guide strip is provided inside the water guide cavity.

[0011] Preferably, the cooling box is provided with a water inlet pipe for introducing cold water, a plurality of adjacent cooling chambers are interconnected, and a drain pipe is connected to the cooling chamber at the bottom.

[0012] Preferably, the pre-cooling box is provided with a second water inlet pipe communicating with the water guide cavity on the inner ring plate, and the bottom of the water guide cavity in the outer ring plate is connected to a second drain pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, a cooling box is provided, and a plurality of air guide plates 1 and 2 are provided inside the cooling box. A tortuous path is formed between the air guide plates 1 and 2, which can extend the residence time of the flue gas inside the cooling box. Cooling chambers that can be interconnected are provided inside the air guide plates 1 and 2. When cold water is introduced into the cooling chambers, the heat in the flue gas can be fully absorbed, and the temperature of the flue gas entering the constant temperature dust removal box can be reduced, thereby preventing the flue gas with excessively high temperature from damaging the constant temperature dust removal box.

[0015] 2. In the present invention, a pre-cooling box is provided, and an inner ring plate and an outer ring plate are provided inside the pre-cooling box. There are water guide cavities inside the inner ring plate and the outer ring plate, and the water guide cavities on the inner ring plate and the outer ring plate are connected through a connecting pipe, which can absorb heat from the flue gas again, so that the heat entering the constant temperature dust removal box is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a left-side stereoscopic sectional view of the present invention.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 For this utility model Figure 3 Enlarged view of point C in the middle.

[0021] In the figure: 1. Constant temperature dust removal box; 2. Cooling box; 3. Pre-cooling box; 4. Air collecting hood; 5. Air guide plate 1; 6. Air guide plate 2; 7. Cooling chamber; 8. Inner ring plate; 9. Outer ring plate; 10. Connecting pipe; 11. Water guide chamber; 12. Water guide strip; 13. Water inlet pipe 1; 14. Drain pipe 1; 15. Water inlet pipe 2; 16. Drain pipe 2; 17. Water distribution pipe; 18. Water collection pipe; 19. Drain pipe 3; 20. Heat transfer pipe; 21. Smoke exhaust pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 5 In an embodiment of the utility model, a constant temperature dust removal device includes a constant temperature dust removal box 1 installed in a smoke exhaust pipe, and the air inlet end of the constant temperature dust removal box 1 is provided with a cooling component for preventing the flue gas from entering the constant temperature dust removal box 1 from having a temperature that is too high. The cooling component includes a cooling box 2 installed on the constant temperature dust removal box 1, and the air inlet end of the cooling box 2 is provided with a pre-cooling box 3, and the air inlet end of the pre-cooling box 3 is provided with an air collecting hood 4; a cooling component for cooling the flue gas is installed inside the cooling box 2, and a pre-cooling component for the initial cooling of the flue gas is provided inside the pre-cooling box 3.

[0024] The constant temperature dust removal box 1 is installed in the upper middle part of the exhaust pipe. The cooling box 2 can cool the flue gas entering the constant temperature dust removal box 1. The pre-cooling box 3 can initially cool the flue gas entering the cooling box 2. After cooling by the pre-cooling box 3 and the cooling box 2, most of the heat in the flue gas will be absorbed. The cooled flue gas will then enter the constant temperature dust removal box 1 for dust removal. The gas collecting hood 4 is installed at the air inlet end of the pre-cooling box 3 to prevent the uncooled flue gas from escaping.

[0025] In one embodiment, specifically, the cooling assembly includes an air guide plate 1 5 and an air guide plate 2 6, the air guide plate 1 5 is located below the air guide plate 2 6, and a cooling channel for cooling the flue gas is formed between the air guide plate 1 5 and the air guide plate 2 6, and the interiors of the air guide plate 1 5 and the air guide plate 2 6 are respectively provided with cooling cavities 7 for passing cold water; the cooling box 2 is provided with a water inlet pipe 13 for introducing cold water, and multiple adjacent cooling cavities 7 are interconnected, and a drain pipe 14 is connected to the cooling cavity 7 at the bottom. The number of air guide plates 1 5 and air guide plates 2 6 can be multiple, and the air guide plates 1 5 and air guide plates 2 6 are alternately arranged. The wind plate 15 is installed in the middle of the cooling box 2, and the wind guide plate 26 is installed on the side wall of the cooling box 2. The cooling channel can increase the residence time of the flue gas in the cooling box 2. The cooling chamber 7 is opened on the wind guide plate 15 and the wind guide plate 26. The wind guide plate 15 and the wind guide plate 26 are connected in sequence. The water inlet pipe 13 is connected to the cooling chamber 7 at the top, and the drain pipe 14 is connected to the cooling chamber 7 at the bottom. Cold water is introduced into the water inlet pipe 13, and the cold water will enter multiple cooling chambers 7 and be discharged from the drain pipe 14. The heat in the flue gas will be absorbed by the water in the wind guide plate 15 and the wind guide plate 26, and the water after absorbing the heat of the flue gas will be discharged from the drain pipe 14.

[0026] Among them, the pre-cooling assembly includes an inner ring plate 8 and an outer ring plate 9 installed inside the pre-cooling box 3, and a pre-cooling channel is formed between the inner ring plate 8 and the outer ring plate 9; a connecting pipe 10 is connected between the inner ring plate 8 and the outer ring plate 9, and the inner ring plate 8 and the outer ring plate 9 are respectively provided with a water guide cavity 11 for passing cold water, and the water guide cavity 11 on the inner ring plate 8 and the outer ring plate 9 is connected through the connecting pipe 10; the pre-cooling box 3 is provided with a water inlet pipe 15 connected to the water guide cavity 11 on the inner ring plate 8, and the bottom of the water guide cavity 11 in the outer ring plate 9 is provided with a water inlet pipe 15 connected to the water guide cavity 11 on the inner ring plate 8. The inner ring plate 8 and the outer ring plate 9 are both hollow. The connecting pipe 10 can connect the two hollow water guide chambers 11 together. The water inlet pipe can facilitate the introduction of cold water into the water guide chamber 11. The drain pipe can discharge the water after absorbing the heat of the flue gas.

[0027] On the basis of the above embodiment, specifically, a spirally arranged water guide strip 12 is provided inside the water guide cavity 11. The water guide strip 12 is spirally arranged, and there are multiple water guide strips 12, which can increase the flow rate of water inside the water guide cavity 11 and can dissipate heat for the flue gas in a timely manner.

[0028] When removing dust from the flue gas inside the exhaust pipe, cooling water is first continuously supplied to the pre-cooling box 3 and the cooling box 2 through the water inlet pipe 1 13 and the water inlet pipe 2 15. When the flue gas enters the exhaust pipe, the flue gas first enters the pre-cooling box 3 through the air collecting hood 4. Since there is flowing cold water in the water guide cavity 11 inside the inner ring plate 8 and the outer ring plate 9, the cold water can absorb the heat in the flue gas and cool the flue gas for the first time, absorbing part of the heat in the flue gas. Then the flue gas enters the cooling box 2. After the initial heat absorption in the pre-cooling box 3, the flue gas enters the cooling box 2 for cooling again. The cooled flue gas will enter the constant temperature dust removal box 1 for dust removal. After cooling twice, the temperature of the flue gas will be reduced to prevent overheated flue gas from damaging the accessories inside the constant temperature dust removal box 1.

[0029] In one embodiment, specifically, the bottom of the drainage pipe 2 16 is connected to a water distribution pipe 17, a water collection pipe 18 is provided below the water distribution pipe 17, a drainage pipe 3 19 is connected to the water collection pipe 18, a plurality of heat conduction pipes 20 are connected between the water distribution pipe 17 and the water collection pipe 18, the water distribution pipe 17 is connected to the drainage pipe 2 16, the water collection pipe 18 is installed below the water distribution pipe 17, the water distribution pipe 17 and the water collection pipe 18 are connected through a plurality of heat conduction pipes 20, the drainage pipe 3 19 can discharge the water that absorbs heat in the water collection pipe 18, and can cool the flue gas before entering the pre-cooling box 3.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A constant temperature dust removal device, characterized in that: The invention comprises a constant temperature dust removal box (1) installed in a smoke exhaust pipe, wherein the air inlet end of the constant temperature dust removal box (1) is provided with a cooling component for preventing the flue gas from entering the constant temperature dust removal box (1) from being too hot, the cooling component comprising a cooling box (2) installed on the constant temperature dust removal box (1), the air inlet end of the cooling box (2) is provided with a pre-cooling box (3), and the air inlet end of the pre-cooling box (3) is provided with an air collecting hood (4); A cooling component for cooling the flue gas is installed inside the cooling box (2), and a pre-cooling component for initially cooling the flue gas is provided inside the pre-cooling box (3).

2. A constant temperature dust removal device according to claim 1, characterized in that: The cooling assembly includes an air guide plate 1 (5) and an air guide plate 2 (6), wherein the air guide plate 1 (5) is located below the air guide plate 2 (6), and a cooling channel for cooling the flue gas is formed between the air guide plate 1 (5) and the air guide plate 2 (6), and a cooling cavity (7) for passing cold water is provided inside the air guide plate 1 (5) and the air guide plate 2 (6).

3. A constant temperature dust removal device according to claim 2, characterized in that: The precooling assembly comprises an inner ring plate (8) and an outer ring plate (9) installed inside the precooling box (3), and a precooling channel is formed between the inner ring plate (8) and the outer ring plate (9).

4. A constant temperature dust removal device according to claim 3, characterized in that: A connecting pipe (10) is connected between the inner ring plate (8) and the outer ring plate (9); a water guide cavity (11) for passing cold water is provided inside the inner ring plate (8) and the outer ring plate (9); the water guide cavities (11) on the inner ring plate (8) and the outer ring plate (9) are communicated through the connecting pipe (10).

5. A constant temperature dust removal device according to claim 4, characterized in that: A water guide strip (12) arranged in a spiral shape is provided inside the water guide cavity (11).

6. A constant temperature dust removal device according to claim 5, characterized in that: The cooling box (2) is provided with a water inlet pipe (13) for introducing cold water, a plurality of adjacent cooling chambers (7) are interconnected, and a drain pipe (14) is connected to the cooling chamber (7) at the bottom.

7. A constant temperature dust removal device according to claim 6, characterized in that: The precooling box (3) is provided with a second water inlet pipe (15) communicating with the water guide cavity (11) on the inner ring plate (8), and the bottom of the water guide cavity (11) in the outer ring plate (9) is connected to a second drain pipe (16).

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