Environment-friendly boiler tail gas dust removal device

Abstract

The utility model discloses a boiler tail gas treatment technical field's an environmental protection type boiler tail gas dust collector, include: dust removal box, be equipped with a plurality of dust removal cavities of equal interval distribution in it, be equipped with the communication passage between adjacent dust removal cavities, and the dust removal box one end is equipped with with the dust removal cavity of side side's communication's air inlet pipe, and the bottom is equipped with a plurality of with dust removal cavity one -to -one correspondence's air outlet pipe, dust removal module, rotate and be located in each dust removal cavity, drive mechanism, locate the outside of dust removal box, be used for when the dust removal module reaches the preset processing threshold value and drive its rotation to non -working position, to guide the tail gas to the downstream adjacent dust removal module in the working position, realize the sequential start -up of dust removal module. The device realizes multistage sequential filtration and centralized maintenance through the step -by -step start -up of dust removal module, prolongs the system continuous operation time significantly, reduces the shutdown frequency, promotes the operation and maintenance efficiency, avoids the drawback that the traditional dust remover needs frequent shutdown and dust removal.

Description

Technical Field

[0001] This utility model relates to the field of boiler exhaust gas treatment technology, specifically to an environmentally friendly boiler exhaust gas dust removal device. Background Technology

[0002] In industrial boiler systems, exhaust gas dust removal is a crucial step in achieving pollutant emission standards. Currently, industrial boiler exhaust gas dust removal primarily utilizes dry dust collection methods, widely employing equipment such as bag filters and cartridge filters. During operation, as dust continuously accumulates on the filter media surface, the system pressure differential gradually increases, leading to increased fan energy consumption and decreased filtration efficiency, necessitating regular cleaning.

[0003] However, existing dust removal equipment has a short cleaning cycle under high dust load conditions, making it impossible to achieve long-term continuous operation, which seriously affects the stability of the system. Each cleaning is done on a single or partial filter bag, resulting in frequent maintenance actions, making it difficult to achieve centralized and intelligent management, and hindering remote monitoring and automated operation.

[0004] To address these issues, an environmentally friendly boiler exhaust gas dust removal device is provided. Utility Model Content

[0005] The purpose of this utility model is to provide an environmentally friendly boiler exhaust gas dust removal device, which solves the problems of frequent maintenance, frequent shutdowns for ash cleaning, and poor operational continuity of existing exhaust gas dust removal devices.

[0006] This utility model achieves the above objectives through the following technical solutions: An environmentally friendly boiler exhaust gas dust removal device includes: The dust collector housing has multiple dust collection chambers distributed at equal intervals inside, and a connecting channel is provided between adjacent dust collection chambers. One end of the dust collector housing is provided with an air inlet pipe that connects to the dust collection chamber on the side, and the bottom is provided with multiple air outlet pipes that correspond to and connect to the dust collection chambers one by one. The dust removal module is rotatably disposed within each of the dust removal chambers; A drive mechanism, located on the outside of the dust removal box, is used to drive the dust removal module to rotate to a non-working position when the dust removal module reaches a preset processing threshold, so as to guide the exhaust gas to the downstream adjacent dust removal module in the working position, thereby realizing the sequential activation of the dust removal modules.

[0007] As a further optimization of this utility model, the dust removal module in the working position blocks the connecting channel leading to the downstream dust removal chamber.

[0008] As a further optimization of this utility model, the dust removal module includes a rotating frame and two filter elements symmetrically arranged in the rotating frame; the rotating frame has an air inlet on the side corresponding to one of the filter elements and an air outlet on the side corresponding to the other filter element, and an airflow channel is formed between the two filter elements for guiding exhaust gas through in the non-working state, and the rotating frame has air vents at both ends of the corresponding airflow channel.

[0009] As a further optimization of this utility model, both ends of the rotating frame are provided with rotating shafts and bearing seats for supporting the rotating shafts; the bearing seats are provided with sensors for monitoring the weight of the dust removal module.

[0010] As a further optimization of this utility model, a heat exchange component is provided in the airflow channel; the heat exchange component includes two manifolds and a plurality of heat exchange tubes disposed between the two manifolds, the surface of the heat exchange tubes is provided with heat exchange fins, the manifolds are T-shaped and fixedly disposed in the rotating shaft, and their ends are provided with rotary joints for connecting external equipment.

[0011] As a further optimization of this utility model, the heat exchange component is provided with flow guides on both sides, and the flow guides are fixed on the corresponding filter elements and include multiple teeth distributed at equal intervals.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model achieves multi-stage sequential filtration and centralized maintenance by activating the dust removal module step by step, which significantly extends the continuous operation time of the system, reduces the frequency of downtime, improves operation and maintenance efficiency, and avoids the drawbacks of traditional dust collectors that require frequent shutdowns for cleaning. In addition, the dust removal module adopts a split design, with two filter elements forming a two-stage filtration unit, which effectively improves dust removal efficiency.

[0013] 2. The heat exchange component of this utility model is integrated into the airflow channel to recover waste heat and realize the integrated design of dust removal and heat exchange. Even when the dust removal module is not in the working position, the exhaust gas still flows through the heat exchange component, so it can realize full-cycle heat energy utilization. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the dust removal module structure of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the dust removal module structure of this utility model. Figure 2 ; Figure 5 This is a cross-sectional view of the dust removal module of this utility model; Figure 6 This is a schematic diagram of the drive mechanism structure of this utility model; Figure 7 This is a schematic diagram of the heat exchange component structure of this utility model.

[0015] In the picture: 1. Dust collector housing; 101. Inlet pipe; 102. Outlet pipe; 103. Dust collection chamber; 2. Dust collection module; 201. Rotating frame; 202. Filter element; 203. Inlet; 204. Outlet; 205. Airflow channel; 206. Vent; 207. Guide component; 208. Rotating shaft; 209. Bearing seat; 3. Drive mechanism; 301. Gear ring; 302. Gear rack; 303. Electric push rod; 304. First positioning plate; 305. Second positioning plate; 4. Heat exchange assembly; 401. Manifold fitting; 402. Heat exchange tube; 403. Rotary joint. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1 To address the issues of frequent maintenance, numerous downtimes for dust removal, and poor operational continuity in existing exhaust gas dust collection systems, please refer to [link / reference needed]. Figures 1-5 This utility model provides an environmentally friendly boiler exhaust gas dust removal device, comprising: The dust collector 1 has multiple dust collection chambers 103 distributed at equal intervals inside. Each dust collection chamber 103 is cylindrical and there is a connecting channel between adjacent dust collection chambers 103. One end of the dust collector 1 is provided with an air inlet pipe 101 that is connected to the dust collection chamber 103 on the side, and the bottom is provided with multiple air outlet pipes 102 that are connected to the dust collection chambers 103 one by one. Dust removal module 2 is rotatably disposed within each dust removal chamber 103; The drive mechanism 3 is located on the outside of the dust removal box 1. It is used to drive the dust removal module 2 to rotate to the non-working position when the dust removal module 2 reaches the preset processing threshold, so as to guide the exhaust gas to the downstream adjacent dust removal module 2 in the working position, thereby realizing the sequential activation of the dust removal module 2. The dust removal module 2 in the working position blocks the communication channel to the downstream dust removal chamber 103, so that the exhaust gas only flows through the dust removal module 2 in the current dust removal chamber 103.

[0018] The dust removal module 2 includes a rotating frame 201 and two filter elements 202 symmetrically arranged in the rotating frame 201. The filter elements 202 are in the shape of an arc-shaped column. The rotating frame 201 has an air inlet 203 on the side corresponding to one of the filter elements 202 and an air outlet 204 on the side corresponding to the other filter element 202. An airflow channel 205 is formed between the two filter elements 202 to guide the exhaust gas through when not in operation. The rotating frame 201 has air vents 206 at both ends of the corresponding airflow channel 205.

[0019] like Figure 6 As shown, both ends of the rotating frame 201 are provided with rotating shafts 208 and bearing seats 209 for supporting the rotating shafts 208; the bearing seats 209 are provided with sensors for monitoring the weight of the dust removal module 2. The drive mechanism 3 includes a gear ring 301 fixedly sleeved on the rotating shaft 208, a rack 302 meshing with the gear ring 301, and an electric push rod 303 for driving the rack 302 to move. A first positioning plate 304 is fixedly mounted on the rack 302, and a second positioning plate 305 is fixedly mounted on the outside of the dust collector 1. As dust accumulates on the surface of the filter element 202, the overall weight of the dust collector module 2 increases. The sensor integrated inside the bearing seat 209 collects the weight signal in real time. When the weight reaches the preset processing threshold, the electric push rod 303 drives the rack 302 to move, and the rack 302 drives the gear ring 301 to rotate, which in turn drives the rotating shaft 208 and its connected rotating frame 201 to rotate, so that the dust collector module 2 switches from the working position to the non-working position. Through the cooperation of the first positioning plate 304 and the second positioning plate 305, the rotation angle of the rotating frame 201 is precisely controlled to ensure reliable switching between the working position and the non-working position, and to achieve accurate alignment between the air inlet 203 and the airflow channel 205.

[0020] During operation, the first dust removal module 2 is in the working position, with its air inlet 203 aligned with the air inlet pipe 101 of the dust removal box 1. Simultaneously, the rotating frame 201 shields the downstream connecting channel. Boiler exhaust gas enters through the air inlet pipe 101, flows into the first filter element 202 through the air inlet 203, and completes preliminary filtration. Subsequently, the gas enters the vertically arranged airflow channel 205 between the two filter elements 202 and flows into the second filter element 202, passing through the filter material again for secondary purification. Dust is trapped on the surface of the filter element 202, and the purified gas is discharged from the air outlet 204 to the corresponding air outlet pipe 102. As dust accumulates on the surface of filter element 202, when the dust removal module 2 reaches the preset processing threshold, the drive mechanism 3 is activated, driving the dust removal module 2 to rotate 90°, aligning its airflow channel 205 with the air inlet pipe 101. At this time, the dust removal module 2 enters a non-working state, and the exhaust gas flows directly through the airflow channel 205 to the adjacent downstream dust removal chamber 103, where it is filtered by the next dust removal module 2, thus enabling the sequential activation of multiple dust removal modules 2. When all dust removal modules 2 reach the preset processing threshold, they are all shut down for centralized cleaning or filter element 202 replacement, significantly reducing maintenance frequency and improving maintenance efficiency.

[0021] Example 2 Based on Example 1, in order to recover heat energy from the exhaust gas and further improve the environmental friendliness of the device, such as... Figure 5 , Figure 7 As shown, a heat exchange assembly 4 is provided in the airflow channel 205; the heat exchange assembly 4 includes two manifolds 401 and a plurality of heat exchange tubes 402 disposed between the two manifolds 401. The surface of the heat exchange tubes 402 is provided with heat exchange fins to enhance the convective heat exchange efficiency with the exhaust gas. The manifolds 401 have a T-shaped structure and are fixedly disposed in the rotating shaft 208. The ends of the manifolds are provided with rotary joints 403 for connecting external equipment.

[0022] Both sides of the heat exchange component 4 are provided with flow guides 207, which are fixed on the corresponding filter element 202. The flow guides 207 include multiple equally spaced teeth, which are used to guide the exhaust gas flow through the surface of the heat exchange tube 402, effectively disperse the airflow vortex, and improve the heat exchange uniformity and heat recovery efficiency.

[0023] When the dust removal module 2 is in the working position, the high-temperature boiler exhaust gas enters the first filter element 202 through the air inlet 203 for preliminary filtration, and then enters the airflow channel 205 between the two filter elements 202. At this time, the airflow first passes through the upstream guide 207, whose evenly spaced teeth rectify and split the airflow, so that the high-temperature flue gas is evenly distributed on the windward side of the heat exchange component 4. Then the flue gas washes over multiple heat exchange tubes 402 equipped with heat exchange fins. The heat is efficiently transferred to the working fluid inside the tube through the tube wall and fins. After being heated in the heat exchange tube 402, the working fluid is collected by the collection pipes 401 at both ends and continuously discharged to the outside through the rotary joint 403 to realize the utilization of waste heat. The exhaust gas that has completed heat exchange continues to flow downstream. The toothed structure of the side guide 207 further stabilizes the flow field, and then enters the second filter element 202 for secondary filtration, and is finally discharged from the outlet 204 to the outlet pipe 102. When the dust removal module 2 is rotated 90° to the non-working position by the drive mechanism 3 due to the accumulation of dust reaching the preset treatment threshold, the airflow channel 205 is aligned with the main airflow. At this time, the high-temperature exhaust gas flows directly through the airflow channel 205 through the heat exchange component 4, and waste heat can still be recovered. Even if the dust removal module 2 has stopped the filtration function, its heat exchange function can continue to operate. At the same time, the heat exchange tube 402 array increases the flow resistance, moderately reduces the airflow speed, and disperses the large-scale vortex, making the airflow more uniform before entering the filter element 202.

[0024] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An environmentally friendly boiler exhaust gas dust removal device, characterized in that, include: The dust collector box (1) has multiple dust collection chambers (103) distributed at equal intervals inside. There is a connecting channel between adjacent dust collection chambers (103). One end of the dust collector box (1) is provided with an air inlet pipe (101) that is connected to the dust collection chamber (103) on the side. The bottom is provided with multiple air outlet pipes (102) that are connected to the dust collection chambers (103) one by one. The dust removal module (2) is rotatably disposed within each of the dust removal chambers (103); The drive mechanism (3) is located on the outside of the dust removal box (1) and is used to drive the dust removal module (2) to rotate to the non-working position when the dust removal module (2) reaches the preset processing threshold, so as to guide the exhaust gas to the downstream adjacent dust removal module (2) in the working position, so as to realize the sequential activation of the dust removal module (2).

2. The environmentally friendly boiler exhaust gas dust removal device according to claim 1, characterized in that, The dust removal module (2) in the working position blocks the communication channel leading to the downstream dust removal chamber (103).

3. The environmentally friendly boiler exhaust gas dust removal device according to claim 1, characterized in that, The dust removal module (2) includes a rotating frame (201) and two filter elements (202) symmetrically arranged in the rotating frame (201). The rotating frame (201) has an air inlet (203) on the side corresponding to one of the filter elements (202) and an air outlet (204) on the side corresponding to the other filter element (202). An airflow channel (205) for guiding exhaust gas through is formed between the two filter elements (202) in the non-working state. The rotating frame (201) has air vents (206) at both ends of the corresponding airflow channel (205).

4. The environmentally friendly boiler exhaust gas dust removal device according to claim 3, characterized in that, Both ends of the rotating frame (201) are provided with a rotating shaft (208) and a bearing seat (209) for supporting the rotating shaft (208). The bearing housing (209) is equipped with a sensor for monitoring the weight of the dust removal module (2).

5. The environmentally friendly boiler exhaust gas dust removal device according to claim 3, characterized in that, The airflow channel (205) is equipped with a heat exchange component (4); The heat exchange assembly (4) includes two manifolds (401) and a plurality of heat exchange tubes (402) disposed between the two manifolds (401). The surface of the heat exchange tubes (402) is provided with heat exchange fins. The manifolds (401) are T-shaped and fixedly disposed in the rotating shaft (208). The ends of the manifolds are provided with rotary joints (403) for connecting external equipment.

6. The environmentally friendly boiler exhaust gas dust removal device according to claim 5, characterized in that, The heat exchange component (4) is provided with flow guides (207) on both sides. The flow guides (207) are fixed on the corresponding filter element (202) and include multiple teeth distributed at equal intervals.

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