Spraying type chimney outlet dust falling device

Abstract

The utility model discloses a spraying type chimney outlet dust falling device which comprises a smoke outlet pipe (1), a smoke outlet portion (2) is formed at the end of the smoke outlet pipe (1), a dust removing pipe (3) is arranged outside the smoke outlet portion (2), a containing cavity is formed between the dust removing pipe (3) and the smoke outlet portion (2), a liquid collecting groove (4) is formed in the containing cavity, and a loading and unloading opening (5) used for loading and unloading the liquid collecting groove (4) is formed in one side of the dust removing pipe (3). A flow guide part (6) is arranged in the middle of the dust removal pipe (3), the two ends of the flow guide part (6) are located over the liquid collecting tanks (4) on the two sides respectively, a flue gas channel for flue gas to pass is formed between the flow guide part (6) and the dust removal pipe (3), a smoke exhaust port (7) is formed in the top of the dust removal pipe (3), and a plurality of first spraying heads (8) are annularly distributed on the dust removal pipe (3) around the smoke exhaust port (7). And the spraying direction of the first spraying head (8) faces the inner end of the smoke outlet (7). The device has the advantages of being good in working stability and convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to a flue gas dust removal device, and more particularly to a spray-type chimney outlet dust suppression device. Background Technology

[0002] To meet environmental protection requirements, current thermal power plants are required to install dust suppression equipment at the outlet of their chimneys. This equipment sprays and removes dust from the emitted flue gas, reducing the dust content to meet regulatory requirements. Based on this, existing dust suppression equipment employs two spraying dust removal methods. The first method involves installing an independent chimney on the top of the plant, with the end of the flue gas outlet pipe installed on the chimney's side wall. This allows the flue gas to flow vertically upwards and exit through the chimney. Simultaneously, spray nozzles are installed inside the chimney to spray the outward-flowing flue gas, causing dust particles to fall to the bottom of the chimney along with the spray water and be discharged through the liquid outlet pipe. This achieves both dust removal and wastewater recovery functions.

[0003] The second type of spray dust collection involves installing a spray chamber in the middle of a horizontal flue gas outlet pipe. The flue gas flows horizontally through the spray chamber, while spray water is sprayed downwards from the top of the chamber, washing away the flue gas and causing it to fall to the bottom of the chamber along with the dust. Finally, the wastewater is discharged through a pipe connected to the bottom of the chamber, achieving both dust collection and wastewater recovery. However, both types of spray dust collection equipment have drawbacks. Firstly, both methods struggle to effectively clean the bottom of the chimney or spray chamber, leading to dust accumulation and blockages at the bottom, affecting the stable discharge of wastewater. Secondly, these systems are not easy to install quickly or modify later. For example, the first type requires extending the flue gas outlet pipe outwards and welding it to the chimney sidewall, while the second requires cutting off the middle of the outlet pipe and installing the spray chamber, increasing the difficulty of both initial installation and subsequent disassembly.

[0004] Therefore, existing spray dust removal equipment used for flue gas pipes suffers from poor operational stability and difficulty in disassembly and assembly. Utility Model Content

[0005] The purpose of this invention is to provide a spray-type dust suppression device for chimney outlets. It features good operational stability and easy assembly / disassembly.

[0006] The technical solution of this utility model is as follows: a spray-type chimney outlet dust suppression device, including a smoke outlet pipe, a smoke outlet section formed at the end of the smoke outlet pipe, a dust removal pipe provided outside the smoke outlet section, a placement cavity formed between the dust removal pipe and the smoke outlet section, a liquid collection tank provided in the placement cavity, a loading and unloading port for loading and unloading the liquid collection tank provided on one side of the dust removal pipe, a flow guide provided in the middle of the dust removal pipe, the two ends of the flow guide are respectively located directly above the two liquid collection tanks, a flue gas passage for flue gas to pass through is formed between the flow guide and the dust removal pipe, a smoke exhaust port is provided at the top of the dust removal pipe, and a plurality of first spray heads are distributed in a ring around the dust removal pipe around the smoke exhaust port, the spraying direction of the first spray heads is towards the inner end of the smoke exhaust port.

[0007] In the aforementioned spray-type chimney outlet dust suppression device, the guide component includes an upper guide plate and a lower guide plate arranged at an interval between the upper and lower parts. The lower guide plate is symmetrically arranged on the left and right sides of the upper guide plate. The upper guide plate and the lower guide plate partially overlap in the horizontal direction, and the lower end of the lower guide plate is located directly above the liquid collection tank.

[0008] In the aforementioned spray-type chimney outlet dust suppression device, a second spray head is connected to the side wall of the dust removal pipe above the lower guide plate, and the spray direction of the second spray head is towards the gap between the upper guide plate and the dust removal pipe.

[0009] In the aforementioned spray-type chimney outlet dust suppression device, one end of the liquid collection tank is provided with a handle, and a cover plate is slidably connected to the dust removal pipe outside the loading port. The inner wall of the cover plate is in contact with the end of the liquid collection tank near the handle, and one side of the cover plate is provided with an opening for the handle to extend out.

[0010] In the aforementioned spray-type chimney outlet dust suppression device, the liquid collection tank is fixedly connected to a pipe joint at the end away from the handle, and the end of the pipe joint extends to the outside of the dust removal pipe and is connected to a liquid outlet pipe.

[0011] Compared with the prior art, this utility model has the following characteristics:

[0012] (1) This utility model, through the structural cooperation of the dust removal pipe and the guide component, can form a flue gas channel for flue gas to pass through in the dust removal pipe, and spray the flue gas in the flue gas channel through the first spray head to achieve the function of spray dust removal; after the spray water comes into contact with the dust, it flows down into the liquid collection tank on both sides through the guide component, and is discharged outward through the liquid collection tank to achieve the function of liquid discharge; on this basis, through the cooperative setting of the liquid collection tank and the loading and unloading port, the operator can regularly pull out and clean the liquid collection tank, thereby effectively preventing the accumulation of dust in the liquid collection tank and the problem of pipe blockage, and improving its working stability;

[0013] (2) Through the structural cooperation between the dust removal pipe and the smoke outlet, the dust removal pipe can be directly installed on the top of the factory building and sleeved on the outside of the smoke outlet. This eliminates the need for welding between the dust removal pipe and the smoke outlet, thus improving the initial installation efficiency of this utility model. Furthermore, when the dust removal device needs to be modified later, the operators can directly remove the dust removal pipe from the smoke outlet pipe, which facilitates the disassembly and assembly of this utility model.

[0014] (3) By limiting the structure of the guide component, on the one hand, the width of its flue gas passage can be increased to ensure the flue gas discharge efficiency; on the other hand, it can also cooperate with the second spray head to achieve double spraying of flue gas, thereby improving its dust removal effect.

[0015] Therefore, this utility model has the characteristics of good working stability and convenient disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Example 1;

[0017] Figure 2 This is a front view of Example 1;

[0018] Figure 3 This is a structural schematic diagram of Example 2;

[0019] Figure 4 This is a rear view of Example 2.

[0020] The labels in the attached diagram are as follows: 1-Smoke outlet pipe, 2-Smoke outlet section, 3-Dust removal pipe, 4-Liquid collection tank, 5-Loading and unloading port, 6-Guide component, 7-Smoke outlet, 8-First spray head, 9-Second spray head, 10-Handle, 11-Cover plate, 601-Upper guide plate, 602-Lower guide plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example 1. A spray-type dust suppression device at the chimney outlet, configured as follows: Figure 1-2 As shown, the system includes a smoke outlet pipe 1, with a smoke outlet section 2 formed at the end of the smoke outlet pipe 1. A dust removal pipe 3 is provided outside the smoke outlet section 2, and a placement cavity is formed between the dust removal pipe 3 and the smoke outlet section 2. A liquid collection tank 4 is provided in the placement cavity. A loading port 5 for loading and unloading the liquid collection tank 4 is provided on one side of the dust removal pipe 3. A guide member 6 is provided in the middle of the dust removal pipe 3, with both ends of the guide member 6 located directly above the liquid collection tanks 4 on both sides. A flue gas passage for the flue gas is formed between the guide member 6 and the dust removal pipe 3. A smoke exhaust port 7 is provided at the top of the dust removal pipe 3. Several first spray heads 8 are arranged in a ring around the dust removal pipe 3 around the smoke exhaust port 7. The spraying direction of the first spray heads 8 is inclined inward and faces the inner end of the smoke exhaust port 7.

[0023] The first spray head 8 can be connected to a spray mist generator. The spray mist generator and the first spray head 8 spray water in the form of water mist onto the flue gas, thereby covering the flue gas at the exhaust port 7.

[0024] One end of the liquid collection tank 4 is provided with a handle 10, and a cover plate 11 is slidably connected to the dust removal pipe 3 outside the loading port 5. The inner wall of the cover plate 11 is in contact with the end of the liquid collection tank 4 near the handle 10, and an opening is provided on one side of the cover plate 11 for the handle 10 to extend out.

[0025] The liquid collection tank 4 is fixedly connected to a pipe connector at the end away from the handle 10. The end of the pipe connector extends to the outside of the dust removal pipe 3 and is connected to a liquid outlet pipe. The pipe connector can be a socket-type pipe connector. The outside of the socket-type pipe connector is inserted into the liquid outlet pipe made of flexible material. So when the liquid collection tank 4 needs to be cleaned, the operator can pull out the liquid outlet pipe along with the liquid collection tank 4 or pull out the liquid outlet pipe and then pull out the liquid collection tank 4 separately from the other side.

[0026] The dust removal pipe 3 is fixed to the top of the factory building by a mounting bracket. The smoke outlet pipe 1 is located inside the factory building and extends to the outside of the factory building through the smoke outlet section 2, thereby facilitating the manufacturer's installation and subsequent modification of the dust suppression device at the outlet of the spray chimney.

[0027] The working principle of this utility model is as follows: After the flue gas is discharged from the smoke outlet 2, it enters the dust removal pipe 3 and flows along the flue gas channel towards the smoke outlet 7. During the flow of the flue gas, the first spray head 8 sprays the flue gas below the smoke outlet 7, so that the dust in the flue gas falls onto the guide member 6 along with the spray water after spraying. Then, it flows down to both sides along the guide member 6 and falls into the liquid collection tank 4. Finally, it is discharged outward through the liquid outlet pipe, realizing the waste liquid recovery function.

[0028] When dust accumulates in the collection tank 4, the operator can open the cover plate 11 and pull out the collection tank 4 horizontally, and then clean the dust in the collection tank 4, thereby effectively preventing the blockage caused by dust accumulation and improving its working stability.

[0029] Example 2. A spray-type dust suppression device at the chimney outlet, configured as follows: Figure 3-4As shown, the system includes a smoke outlet pipe 1, with a smoke outlet section 2 formed at the end of the smoke outlet pipe 1. A dust removal pipe 3 is provided outside the smoke outlet section 2, and a placement cavity is formed between the dust removal pipe 3 and the smoke outlet section 2. A liquid collection tank 4 is provided in the placement cavity. A loading port 5 for loading and unloading the liquid collection tank 4 is provided on one side of the dust removal pipe 3. A guide member 6 is provided in the middle of the dust removal pipe 3, with both ends of the guide member 6 located directly above the liquid collection tanks 4 on both sides. A flue gas passage for the flue gas is formed between the guide member 6 and the dust removal pipe 3. A smoke exhaust port 7 is provided at the top of the dust removal pipe 3. Several first spray heads 8 are arranged in a ring around the dust removal pipe 3 around the smoke exhaust port 7. The spraying direction of the first spray heads 8 is inclined inward and faces the inner end of the smoke exhaust port 7.

[0030] The flow guide 6 includes an upper flow guide plate 601 and a lower flow guide plate 602 arranged at an interval between the upper and lower sides. The lower flow guide plate 602 is symmetrically arranged on the left and right sides of the upper flow guide plate 601. The upper flow guide plate 601 and the lower flow guide plate 602 partially overlap in the horizontal direction. The lower end of the lower flow guide plate 602 is located directly above the liquid collection tank 4.

[0031] A second spray head 9 is connected to the side wall of the dust removal pipe 3 above the lower guide plate 602. The spray direction of the second spray head 9 is towards the gap between the upper guide plate 601 and the dust removal pipe 3.

[0032] Both the first spray head 8 and the second spray head 9 are connected to a spray mist generator. The spray mist generator sprays water onto the flue gas in the form of water mist, thereby covering the flue gas passage.

[0033] One end of the liquid collection tank 4 is provided with a handle 10, and a cover plate 11 is slidably connected to the dust removal pipe 3 outside the loading port 5. The inner wall of the cover plate 11 is in contact with the end of the liquid collection tank 4 near the handle 10, and an opening is provided on one side of the cover plate 11 for the handle 10 to extend out.

[0034] The liquid collection tank 4 has a threaded fitting at the end away from the handle 10. The fitting extends to the outside of the dust removal pipe 3 and is connected to the liquid outlet pipe. When the liquid collection tank 4 needs to be cleaned, the operator can first unscrew the fitting to separate it from the liquid collection tank 4, and then pull out the liquid collection tank 4 separately for cleaning.

[0035] Thus, the dust removal pipe 3 is fixed to the top of the factory building by a mounting bracket, and the smoke outlet pipe 1 is located inside the factory building and extends to the outside of the factory building through the smoke outlet part 2 through the roof, which facilitates the manufacturer's installation and subsequent modification of the dust suppression device at the outlet of the spray chimney.

[0036] Compared with Embodiment 1, this embodiment adjusts the structure of the guide member 6 so that the upper guide plate 601 and the lower guide plate 602 can, on the one hand, ensure the stable flow of the spray liquid and prevent the spray liquid from dripping into the flue pipe 1, and on the other hand, increase the width of its flue gas passage, thereby ensuring the exhaust efficiency of the flue gas.

Claims

1. A spray-type dust suppression device for chimney outlets, characterized in that: The system includes a smoke outlet pipe (1), with a smoke outlet section (2) formed at the end of the smoke outlet pipe (1). A dust removal pipe (3) is provided outside the smoke outlet section (2). A placement cavity is formed between the dust removal pipe (3) and the smoke outlet section (2). A liquid collection tank (4) is provided in the placement cavity. A loading port (5) for loading the liquid collection tank (4) is provided on one side of the dust removal pipe (3). A guide member (6) is provided in the middle of the dust removal pipe (3). The two ends of the guide member (6) are located directly above the two liquid collection tanks (4) on both sides. A flue gas passage for the flue gas is formed between the guide member (6) and the dust removal pipe (3). A smoke exhaust port (7) is provided at the top of the dust removal pipe (3). Several first spray heads (8) are distributed in a ring around the dust removal pipe (3). The spraying direction of the first spray heads (8) is towards the inner end of the smoke exhaust port (7).

2. The spray-type chimney outlet dust suppression device according to claim 1, characterized in that: The flow guide (6) includes an upper flow guide plate (601) and a lower flow guide plate (602) arranged at an interval between the upper and lower sides. The lower flow guide plate (602) is symmetrically arranged on the left and right sides of the upper flow guide plate (601). The upper flow guide plate (601) and the lower flow guide plate (602) partially overlap in the horizontal direction. The lower end of the lower flow guide plate (602) is located directly above the liquid collection tank (4).

3. The spray-type chimney outlet dust suppression device according to claim 2, characterized in that: A second spray head (9) is connected to the side wall of the dust removal pipe (3) above the lower guide plate (602). The spraying direction of the second spray head (9) is towards the gap between the upper guide plate (601) and the dust removal pipe (3).

4. The spray-type chimney outlet dust suppression device according to claim 1, characterized in that: One end of the liquid collection tank (4) is provided with a handle (10), and a cover plate (11) is slidably connected to the dust removal pipe (3) outside the loading port (5). The inner wall of the cover plate (11) is in contact with the end of the liquid collection tank (4) near the handle (10), and an opening is provided on one side of the cover plate (11) for the handle (10) to extend out.

5. The spray-type chimney outlet dust suppression device according to claim 4, characterized in that: The liquid collection tank (4) is fixedly connected to a pipe joint at the end away from the handle (10), and the end of the pipe joint extends to the outside of the dust removal pipe (3) and is connected to the liquid outlet pipe.

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