A desulfurization fluidized wind pipe cleaning device

Abstract

The utility model relates to desulfurization chute technical field especially, it relates to a kind of desulfurization fluidization air pipeline cleaning device. Including ash delivery square tube, several fixed brackets are set at the bottom of ash delivery square tube at equal intervals, several fixed brackets are simultaneously provided with air duct pipe, air duct pipe is connected with ash delivery square tube by several air supply pipes, air duct pipe outside is equipped with thermal insulation cotton cover, the bottom of ash delivery square tube is provided with several first discharge pipes at equal intervals, the port of each first discharge pipe is provided with butt flange one, the bottom of air duct pipe is provided with several second discharge pipes at equal intervals, butt flange two is provided on the port of each second discharge pipe. When cleaning, original pipeline does not need to be stopped and disassembled, secondary dusting caused by desulfurizer remaining in system due to pipeline disassembly is eliminated from the source, personnel inhalation injury is avoided, simultaneously, blocked material is guided out by the aid of self differential pressure in pipeline, and material spatter problem caused by pipeline residual pressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization inclined trough technology, and in particular to a desulfurization fluidized air duct cleaning device. Background Technology

[0002] In the operation of desulfurization systems, core equipment such as inclined chutes and ash hoppers rely on the synergistic effect of fluidizing air and fluidizing canvas. Their working principle involves using fluidizing air under the breathable canvas at the bottom to fluidize the material, thereby utilizing gravity to achieve horizontal or inclined conveying of the material. This prevents material accumulation and caking, ensuring efficient desulfurization reactions. However, the fluidizing canvas must withstand the continuous scouring of high temperatures and high concentrations of dust within the system for extended periods, making it prone to localized damage or aging.

[0003] Once the fluidizing canvas is damaged, desulfurizing agent particles can break through the filter barrier and enter the fluidizing air duct. Since the fluidizing air duct is mostly a closed and slender structure, the desulfurizing agent particles entering the duct tend to accumulate in these locations, gradually forming blockages. Pipe blockages will directly lead to uneven fluidizing air supply, causing the fluidization of desulfurizing agent in the inclined chute and ash hopper to fail, which will then lead to a "bed collapse" accident, causing a sharp drop in desulfurization efficiency. If the blockage is severe and not dealt with in time, the accumulated desulfurizing agent will generate huge static pressure, which may crush the ash hopper shell, causing equipment damage and production interruption.

[0004] The existing approach to addressing the aforementioned pipe blockage issue primarily involves shutdown and dismantling for cleaning. This requires first stopping the desulfurization system, then manually disassembling the pipe flanges and bolts after the residual pressure in the pipes is released, followed by clearing the blockage by hammering the outer wall of the pipes or blowing it out with a high-pressure air gun. However, this method has significant drawbacks: Firstly, residual desulfurizing agent dust in the pipes during dismantling can easily create secondary dust, leading to inhalation injuries for maintenance personnel, and residual pressure in the pipes may cause material splashing, posing a safety hazard. Secondly, a single cleaning process requires multiple steps, including shutdown, dismantling, clearing, and reassembly, taking up to 2-3 hours, severely impacting the continuous operation of the desulfurization system. Furthermore, manual hammering can easily cause pipe deformation and damage to the flange sealing surfaces, increasing the risk of future leaks. Incomplete clearing can also lead to recurring blockages, significantly increasing system maintenance costs and the frequency of failures. Utility Model Content

[0005] The purpose of this invention is to provide a desulfurization fluidized air duct cleaning device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A desulfurization fluidized bed cleaning device includes an ash-feeding square pipe. Several fixed brackets are evenly spaced at the bottom of the ash-feeding square pipe. Several air ducts are simultaneously mounted on the fixed brackets. The air ducts and the ash-feeding square pipe are connected by several air supply pipes. An insulation cotton sleeve is fitted over the outside of the air ducts. Several first discharge pipes are evenly spaced at the bottom of the ash-feeding square pipe. Each first discharge pipe has a connecting flange at its port. Several second discharge pipes are evenly spaced at the bottom of the air ducts. Each second discharge pipe has a connecting flange at its port. A flange butterfly valve is connected to the bottom of both the first and second connecting flanges by several bolt groups.

[0008] As a preferred embodiment of this utility model, each of the flange butterfly valves of the first discharge pipes is provided with a detachable discharge pipe 2 at its bottom. The upper and lower ports of the discharge pipe 2 are provided with connecting flanges 4. The top connecting flange 4 is connected to the bottom of the flange butterfly valve 1 by several bolt groups, and the bottom connecting flange 4 is connected to the flange butterfly valve 2 by several bolt groups.

[0009] As a preferred embodiment of this utility model, each of the flange butterfly valves of the second discharge pipes is provided with a detachable discharge pipe at its bottom. The upper and lower ports of the discharge pipe are provided with connecting flanges. The top connecting flange is connected to the bottom of the flange butterfly valve by a number of bolt groups, and the bottom connecting flange is connected to the flange butterfly valve by a number of bolt groups.

[0010] As a preferred embodiment of this utility model, each of the flange butterfly valves 2 is provided with a discharge pipe 3 at its bottom, and a connecting flange 5 is provided at the top of the discharge pipe 3. The connecting flange 5 is connected to the bottom of the flange butterfly valve 2 by a number of bolt groups. A clamping groove is provided on the outer wall above the discharge port of each discharge pipe 3. A material collection bag is fitted on the discharge port of the discharge pipe 3, and a detachable clamping body is clamped on the opening of the material collection bag. The clamping body is set in the clamping groove.

[0011] As a preferred embodiment of this utility model, screws are symmetrically arranged on the same side of the first and second feeding pipes, and anti-sway rods are arranged between the screws on adjacent first and second feeding pipes, and each screw is threaded with a nut, which abuts against the back of the anti-sway rod.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] 1. This utility model eliminates the need to stop the machine and dismantle the original pipeline during cleaning, thus preventing secondary dust generation caused by pipeline dismantling due to residual desulfurizing agent in the system and avoiding inhalation injuries to personnel. At the same time, it uses the pressure difference within the pipeline to discharge blockage materials, eliminating the problem of material splashing caused by residual pressure in the pipeline.

[0014] 2. This utility model can complete the cleaning simply by opening the butterfly valve to drain the water (5-8 minutes), shortening the single operation time to within 15 minutes and increasing efficiency by more than 90%. It does not require interrupting the operation of the desulfurization system, avoiding production losses caused by downtime, meeting the continuous and stable operation requirements of the desulfurization system, and effectively solving the core pain point of low efficiency in traditional cleaning methods.

[0015] 3. This utility model eliminates the need for manual tapping of pipes, completely avoiding pipe deformation and flange sealing surface damage, reducing the risk of pipe leakage in the later stage, and extending the service life of fluidized air ducts and other equipment by 30%. At the same time, the ash collected in the ash hopper can be screened and reused, reducing material waste. Moreover, the cleaning process relies on pressure difference to completely remove blockages, avoiding repeated blockages and reducing the cost of repeated equipment maintenance. Attached Figure Description

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

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0019] Figure 4 for Figure 3 Enlarged view at point C;

[0020] Figure 5 This is a schematic diagram of the structure of feeding pipe one and feeding pipe two of this utility model.

[0021] Attached reference numerals: 1. Ash feeding square tube; 10. Fixed bracket; 11. First discharge pipe; 12. Connecting flange one; 2. Air duct pipe; 20. Insulation cotton sleeve; 21. Second discharge pipe; 22. Air supply pipe; 23. Connecting flange two; 3. Flange butterfly valve one; 30. Bolt group; 4. Discharge pipe one; 40. Connecting flange three; 5. Discharge pipe two; 50. Connecting flange four; 6. Flange butterfly valve two; 60. Discharge pipe three; 61. Connecting flange five; 7. Clamp groove; 8. Clamp body; 9. Material collection bag; 100. Screw; 101. Anti-sway rod; 102. Nut. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] like Figures 1-5As shown, the present invention proposes a desulfurization fluidized air duct cleaning device, including a ash-feeding square pipe 1, which is the main channel for conveying desulfurizing agent. Fixed brackets 10 are evenly distributed along the length of the bottom outer wall of the ash-feeding square pipe 1. The fixed brackets 10 are fixedly connected to the outer wall of the ash-feeding square pipe 1 to form a support structure. The air duct 2 is erected parallel above all the fixed brackets 10. Multiple air supply pipes 22 are also connected between the ash-feeding square pipe 1 and the air duct 2. The two ends of the air supply pipes 22 are fixedly connected to the side wall of the ash-feeding square pipe 1 and the side wall of the air duct 2, respectively, to form an airflow passage between the two. The outer side of the air duct 2 is covered with a thermal insulation cotton sleeve 20, and the outer layer of the thermal insulation cotton sleeve 20 is reinforced with a protective layer.

[0024] The bottom of the ash-feeding square tube 1 is uniformly and vertically connected with multiple first discharge pipes 11 along the length direction. Each first discharge pipe 11 is fixedly connected to a connecting flange 12 at the end away from the ash-feeding square tube 1. The bottom of the air duct 2 is uniformly and vertically connected with multiple second discharge pipes 21 along the length direction. Each second discharge pipe 21 is fixedly connected to a connecting flange 23 at the end away from the air duct 2.

[0025] All the bottom of the first discharge pipe 11's connecting flange 12 are connected to flange butterfly valve 3 by bolt group 30, and sealing gaskets are installed between bolt group 30, connecting flange 12, and flange butterfly valve 3; the bottom of all the second discharge pipe 21's connecting flange 23 are also connected to flange butterfly valve 3 by bolt group 30, and the connection method is the same as that of the first discharge pipe 11, forming a primary control structure for discharge.

[0026] The bottom of flange butterfly valve 13 is connected to a detachable discharge pipe 25. The upper and lower ends of discharge pipe 25 are respectively fixed with connecting flange 4 50. The upper connecting flange 4 50 is connected to the bottom of flange butterfly valve 13 through bolt group 30, and the lower connecting flange 4 50 is connected to flange butterfly valve 26 through bolt group 30, forming a two-stage flow guiding and control path.

[0027] The bottom of flange butterfly valve 13 is connected to a detachable feed pipe 14. The upper and lower ends of feed pipe 14 are respectively fixed with connecting flange 3 40. The upper connecting flange 3 40 is connected to the bottom of flange butterfly valve 13 via bolt group 30. The lower connecting flange 3 40 is connected to flange butterfly valve 2 6 via bolt group 30. The connection structure is symmetrical to feed pipe 2 5.

[0028] All flange butterfly valves 26 are connected to the bottom of the discharge pipe 360. The top of the discharge pipe 360 ​​is fixed with the docking flange 561. The docking flange 561 is connected to the bottom of the flange butterfly valve 26 through the bolt group 30. The outer wall of the discharge port of the discharge pipe 360 ​​is provided with an annular clamp groove 7. The discharge port is fitted with a material collection bag 9. A detachable clamp body 8 is clamped at the mouth of the material collection bag 9. The clamp body 8 is embedded in the clamp groove 7 and tightened to fix it, so as to realize material collection.

[0029] Screws 100 are symmetrically fixed on the outer wall of the same side of the feed pipe 4 and the feed pipe 5. Anti-sway rods 101 are installed between the screws 100 of adjacent feed pipes 4 and 5. Each screw 100 is threaded with a nut 102. The nut 102 is pressed against the side of the anti-sway rod 101 away from the screw 100. The anti-sway rod 101 is fixed by the cooperation between the nut 102 and the screw 100, forming a pipe anti-sway support.

[0030] Once the blockage in the pipeline is loosened, the flange butterfly valve 11 of the first discharge pipe 11 and the flange butterfly valve 21 of the corresponding positions are installed with the discharge pipe 14 and the discharge pipe 25 respectively. After installation, the flange butterfly valve 13 is opened. The loose blockage in the ash conveying square pipe 1 passes through the first discharge pipe 11 and the blockage in the air duct pipe 2 passes through the second discharge pipe 21, and enters the corresponding discharge pipe 25 and discharge pipe 14 respectively, completing the initial diversion of the blockage from the main pipeline to the diversion pipeline.

[0031] Simultaneously, flange butterfly valve 26 needs to be opened, and the blockage flows along feed pipe 360 ​​to the collection assembly. The blockage entering feed pipe 360 ​​eventually falls into the collection bag 9 fitted at its port, and the blockage is directly collected by the collection bag 9 to avoid material overflow and environmental pollution. The detachable clamp 8 at the port of feed pipe 360 ​​can firmly fix the bag to prevent the bag from falling off during the collection process and ensure stable collection.

[0032] The anti-sway bar 101 between feed pipe 1 4 and feed pipe 2 5 is fixed by screw 100 and nut 102 to form a lateral support structure. During the unblocking process, the airflow and material flow in the pipe will generate impact force. The anti-sway bar 101 can offset part of the impact force, prevent the feed pipe from shifting or shaking due to vibration, ensure smooth discharge path, reduce wear on pipe connection parts, and extend the service life of the device.

[0033] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A desulfurization fluidized bed cleaning device, comprising an ash-feeding square pipe (1), wherein several fixed brackets (10) are equally spaced at the bottom of the ash-feeding square pipe (1), and air ducts (2) are simultaneously arranged on several of the fixed brackets (10), the air ducts (2) and the ash-feeding square pipe (1) are connected by several air supply pipes (22), and the air ducts (2) are covered with a heat-insulating cotton sleeve (20) on the outside, characterized in that: The bottom of the ash conveying square tube (1) is provided with several first discharge pipes (11) at equal intervals. Each first discharge pipe (11) is provided with a first flange (12) at its port. The bottom of the air duct (2) is provided with several second discharge pipes (21) at equal intervals. Each second discharge pipe (21) is provided with a second flange (23) at its port. The bottom of the first flange (12) and the second flange (23) are connected to a flange butterfly valve (3) by several bolt groups (30).

2. The desulfurization fluidized air duct cleaning device according to claim 1, characterized in that: Each of the flange butterfly valves (3) of the first discharge pipes (11) is provided with a detachable discharge pipe (5) at the bottom. The upper and lower ports of the discharge pipe (5) are provided with a connecting flange (50). The connecting flange (50) at the top is connected to the bottom of the flange butterfly valve (3) by several bolt groups (30), and the connecting flange (50) at the bottom is connected to the flange butterfly valve (6) by several bolt groups (30).

3. The desulfurization fluidized air duct cleaning device according to claim 2, characterized in that: The bottom of each of the flange butterfly valves (3) of several second discharge pipes (21) is provided with a detachable discharge pipe (4). The upper and lower ports of the discharge pipe (4) are provided with a connecting flange (40). The top connecting flange (40) is connected to the bottom of the flange butterfly valve (3) by several bolt groups (30), and the bottom connecting flange (40) is connected to the flange butterfly valve (6) by several bolt groups (30).

4. The desulfurization fluidized air duct cleaning device according to claim 3, characterized in that: Each of the flange butterfly valves 2 (6) is provided with a discharge pipe 3 (60) at the bottom. The discharge pipe 3 (60) is provided with a connecting flange 5 (61) at the top. The connecting flange 5 (61) is connected to the bottom of the flange butterfly valve 2 (6) by several bolt groups (30). A clamping groove (7) is provided on the outer wall above the discharge port of each discharge pipe 3 (60). A material collection bag (9) is fitted on the discharge port of the discharge pipe 3 (60). A detachable clamping body (8) is clamped on the bag mouth of the material collection bag (9). The clamping body (8) is set in the clamping groove (7).

5. The desulfurization fluidized air duct cleaning device according to claim 3, characterized in that: Screws (100) are symmetrically arranged on the same side of the first feeding pipe (4) and the second feeding pipe (5). Anti-sway rods (101) are arranged between the screws (100) on adjacent first feeding pipe (4) and second feeding pipe (5). Each screw (100) is threaded with a nut (102), and the nut (102) abuts against the back of the anti-sway rod (101).

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