A device capable of effectively reducing the blockage of a desulfurization tower nozzle

Abstract

The utility model discloses a device that can effectively reduce the blockage of the desulfurization tower nozzle, comprising a filter device arranged in the desulfurization tower body, the desulfurization tower body comprising a spraying device, a flue gas pipeline, an observation hole and a circulating tank, the filter device comprising: a support frame, the lower end surface of the support frame is connected with the inner wall of the desulfurization tower body through several support columns, the upper end surface middle part is fixedly connected with a protective cap, and a grating plate is laid from the protective cap to the inner wall of the desulfurization tower body; the protective cap is arranged in the middle part of the support frame and is used for preventing the ore pulp from entering the circulating tank smoothly when the grating plate is blocked. The utility model achieves the effect of filtering the desulfurization medium by lapping the grating plate on the support frame, and by setting the protective cap, when the desulfurization medium falls slowly and the circulating effect is poor due to the blockage of the gap between the grating plates, the desulfurization medium is injected downward from the protective cap, ensuring the circulation and improving the continuous and effective desulfurization operation.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology innovation, specifically relating to a device that can effectively reduce the clogging of desulfurization tower nozzles. Background Technology

[0002] In the process of wet zinc smelting, zinc-containing waste residue is volatilized in a rotary kiln to recover zinc and other valuable metals, producing zinc oxide dust, which is mainly zinc and contains other valuable metals, and flue gas containing sulfur dioxide. The zinc oxide dust is returned to the wet smelting system for comprehensive recovery of zinc and valuable metals. Because the flue gas contains a high amount of sulfur dioxide, it cannot be directly emitted and must be absorbed by a desulfurization tower to meet the standards before it can be emitted.

[0003] The desulfurization tower is a hollow structure composed of steel and fiberglass components, with a cylindrical core and conical ends. Its working principle is as follows: under the action of a powerful fan, flue gas containing sulfur dioxide enters from the bottom of the tower and is then extracted from the top by the fan. Simultaneously, under the action of a circulating pump, the desulfurization medium is evenly dispersed into a mist and sprayed from the top of the tower through pressurized nozzles. The sulfur dioxide in the flue gas reacts chemically with the sprayed desulfurization medium to form water-insoluble sulfites, thus removing sulfur dioxide and ensuring the flue gas meets emission standards. The desulfurization medium sprayed from top to bottom flows into a desulfurization medium storage tank and is then pumped by a circulating pump to the spray device at the top of the tower for continuous absorption. The desulfurization medium can be an alkaline solution or a metal oxide slurry (this company uses zinc oxide dust slurry).

[0004] During the circulating desulfurization process, zinc oxide dust slurry (the main component of which is zinc oxide) and sulfur dioxide in the desulfurization medium react chemically to form zinc sulfite, which is insoluble in water. When the concentration of sulfur dioxide is high or the concentration of the slurry is relatively large, zinc sulfite crystals will form on the inner wall and top of the desulfurization tower. The crystals will become thicker and thicker, and when they reach a certain thickness, they will fall off naturally, causing blockages in the lower end of the desulfurization tower, the pipes of the circulation system, and the nozzles of the spray system. This will reduce the desulfurization effect, and in severe cases, the desulfurization operation can only be stopped, and manual entry into the desulfurization tower is required for cleaning. This will not only affect production efficiency but also increase safety risks and labor intensity.

[0005] Based on the above factors, the key to solving the above technical problems lies in developing a highly efficient and specialized device that can effectively reduce the clogging of desulfurization tower nozzles. Summary of the Invention

[0006] To address the problems existing in the background technology, this utility model proposes a device that can effectively reduce the clogging of desulfurization tower nozzles. By setting a protective cap, when the holes on the grid plate become blocked, the slurry solution cannot be discharged downward through the grid plate in time and accumulates. When the height of the accumulated liquid exceeds the height of the bottom enclosure of the protective cap, the rectangular frame design of the enclosure allows the slurry to flow downward from the cavity in the middle of the enclosure into the circulation tank below the desulfurization tower body, ensuring the effective operation of the circulation system. Furthermore, the design of the top of the protective cap effectively prevents crystals falling from the top of the desulfurization tower body from falling into the enclosure and clogging the circulation system.

[0007] Another objective of this invention is to filter crystal blocks and prevent them from clogging the circulation system by setting up a support frame and installing a grid plate on the support frame.

[0008] Another objective of this invention is to facilitate installation and disassembly by setting a telescopic rod at one end of the support frame and adjusting the distance between the support frame and the inner wall of the desulfurization tower body through the telescopic rod.

[0009] To solve the above problems and achieve the objectives of the invention, this utility model provides a device that can effectively reduce the clogging of desulfurization tower nozzles. This is achieved by adopting the following design structure and the following technical solution:

[0010] A device for effectively reducing nozzle clogging in a desulfurization tower includes a filter device installed inside the desulfurization tower body. The desulfurization tower body includes a spray device, a flue gas duct, an observation port, and a circulation tank. The filter device includes:

[0011] The support frame has its lower end face connected to the inner wall of the desulfurization tower body through several support columns, and its upper end face is fixedly connected to the protective cap. A grid plate is laid from the protective cap to the inner wall of the desulfurization tower body.

[0012] The protective cap is located in the middle of the support frame and is used to prevent the slurry from being unable to enter the circulation tank smoothly when the grid plate is blocked.

[0013] Preferably, the protective cap includes:

[0014] The enclosure is a rectangular frame structure, with one end of the enclosure fixedly connected to the support frame and the other end connected to one end of the frame;

[0015] The frame is taller than the fence, and its other end is fixedly connected to the top of the cap.

[0016] The top of the cap is connected to the frame, and its top is a sloping structure, which is used to cover the fence and prevent large pieces of material from falling in and blocking the fence.

[0017] The outer wall of the enclosure is in contact with the grating panel.

[0018] Preferably, the support frame is a disc-shaped structure formed by interlacing several channel steels of different lengths, and its diameter is the same as the inner diameter of the desulfurization tower body.

[0019] Preferably, each end of the channel steel on the support frame is provided with a support block, and the inclination angle of the support block connecting to the channel steel matches the inner wall of the contact desulfurization tower body, so that the support block is tightly attached to the inner wall of the desulfurization tower body, for providing lateral support and limiting.

[0020] Preferably, the support frame further includes:

[0021] The telescopic rod has a support block at one end and a "U-shaped groove" at the other end. The width of the groove is smaller than the width between the inner walls of the channel steel. The telescopic rod is embedded in the groove of the channel steel and is fixed to the end of the channel steel by bolts passing through the "U-shaped groove" and the pre-set internal threaded holes at the end of the channel steel.

[0022] Preferably, the filtration device further includes:

[0023] Support bars, consisting of several bars, are installed between the support frame and the grating plate, and provide support for grating plates of different sizes by overlapping on the support frame.

[0024] Preferably, the supporting columns are columnar structures of varying lengths, so that the plane on which the support frame is located is parallel to the ground and is located at the lowest point of the observation hole preset on the side wall of the desulfurization tower body.

[0025] Preferably, the supporting column, support frame and protective cap are all made of 316L stainless steel.

[0026] Preferably, the depth of the "U-shaped groove" provided on the telescopic rod is between 100-150mm.

[0027] Working Principle: The above-described design effectively reduces nozzle clogging in desulfurization towers. During operation, a support frame 22 is designed with a grid plate 24 attached to it. The grid plate 24 blocks zinc sulfite crystals generated and falling during the production process, preventing them from entering the circulation tank 14 and clogging the circulation system and spray nozzles on the spray device 11. A protective cap 23 is installed in the middle of the support frame 22, and a barrier 231 is installed below it. When crystals clog the holes in the grid plate 24, the desulfurization medium level gradually rises. When the level exceeds the height of the barrier 231, the liquid overflows the barrier 231. Figure 2As shown, due to the gap between the enclosure 231 and the cap 233, the desulfurization medium liquid flows from the central cavity of the enclosure 231 into the circulation tank 14 below. The cap 233 also blocks crystals falling from the top of the desulfurization tower body 1, preventing them from clogging the central cavity of the enclosure 231 and ensuring effective flow guidance from the protective cap 23. When there are many crystals on the grid plate 24, the pre-set observation hole 13 on the side wall of the desulfurization tower body 1 is opened. A rake 3, made of a long rod and a toothed steel plate welded together, is used to rake out the blocky crystals from the observation hole 13, and then the observation hole 13 is closed. This does not affect normal production, avoids crystal blockage of the grid plate 24, and prevents the desulfurization medium from flowing into the circulation tank 14, reducing equipment downtime and improving work efficiency.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1. This utility model prevents crystallized material generated and falling during production from falling into the circulation tank and being transported with the circulation pipeline, thus preventing blockage of the circulation system and nozzles, by setting up a support frame and attaching a grid plate on the support frame.

[0030] 2. This utility model, by setting a protective cap and designing the protective cap to consist of a barrier, a frame and a cap top, prevents crystals falling from the top of the desulfurization tower body from clogging the grid plate, thus preventing the desulfurization medium from smoothly entering the circulation tank and reducing the desulfurization operation efficiency.

[0031] 3. This utility model provides lateral restraint by setting a support block at the end of the support frame and by cooperating the inclination angle of the support block with the contact surface of the inner wall of the desulfurization tower;

[0032] 4. This utility model provides a telescopic rod at the end of the support frame, allowing for faster and more efficient installation and disassembly of the support frame through the adjustment of the telescopic rod;

[0033] 5. This utility model ensures the stability of the grating panels when they are overlapped by setting support bars between the support frame and the grating panel to match grating panels of different sizes. Attached Figure Description

[0034] Figure 1 This is one of the schematic diagrams showing the usage state of this utility model;

[0035] Figure 2 This is the second schematic diagram of the usage state of this utility model;

[0036] Figure 3 This is an internal perspective view of the desulfurization tower body 1 of this utility model;

[0037] Figure 4 This is a schematic diagram showing the connection relationship between the support frame 22 and the grid plate 24 of this utility model;

[0038] Figure 5 This is a schematic diagram showing the connection relationship between the support column 21 and the support frame 22 of this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the rake 3 of this utility model;

[0040] Figure 7 This is a schematic diagram showing the usage state of the rake 3 of this utility model;

[0041] Figure 8 This is a schematic diagram of the overall exploded structure of Embodiment 1 of this utility model;

[0042] Figure 9 This is a schematic diagram of the support frame 22 in Embodiment 1 of this utility model;

[0043] Figure 10 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0044] Figure 11 This is a schematic diagram of the telescopic rod 223 in Embodiment 2 of this utility model;

[0045] Figure 12 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0046] Figure 13 This is a schematic diagram of the structure of Embodiment 4 of this utility model;

[0047] Figure label:

[0048] 1-Desulfurization tower body, 11-Spraying device, 12-Flue gas duct, 13-Observation hole, 14-Circulation tank;

[0049] 2-Filter device, 21-Support column, 22-Support frame, 23-Protective cap, 24-Grid plate, 221-Support bar, 222-Support block, 223-Telescopic rod, 231-Enclosure, 232-Frame, 233-Cap top;

[0050] 3- Rake. Detailed Implementation

[0051] To make the technical means, inventive features, and achieved objectives and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Example 1

[0053] like Figures 1 to 9As shown, this embodiment provides a device that can effectively reduce the clogging of desulfurization tower nozzles, including a filter device 2 installed inside the desulfurization tower body 1. The desulfurization tower body 1 includes a spray device 11, a flue gas duct 12, an observation hole 13, and a circulation tank 14. The filter device 2 includes:

[0054] A device for effectively reducing nozzle clogging in a desulfurization tower includes a filter device 2 installed inside the desulfurization tower body 1. The desulfurization tower body 1 includes a spray device 11, a flue gas duct 12, an observation hole 13, and a circulation tank 14. The filter device 2 includes:

[0055] Support frame 22, the lower end face of support frame 22 is connected to the inner wall of desulfurization tower body 1 through several support columns 21, the middle part of the upper end face is fixedly connected to protective cap 23, and a grid plate 24 is laid from the protective cap 23 to the inner wall of desulfurization tower body 1.

[0056] Protective cap 23 is located in the middle of support frame 22 and is used to prevent slurry from entering circulation tank 14 smoothly when grid plate 24 is blocked.

[0057] Furthermore, the protective cap 23 includes:

[0058] The enclosure 231 is a rectangular frame structure. One end of the enclosure 231 is fixedly connected to the support frame 22, and the other end is connected to one end of the frame 232.

[0059] Frame 232, the height of frame 232 is greater than the height of fence 231, and its other end is fixedly connected to the top of the cap 233;

[0060] The top of the cap 233 is connected to the frame 232 at its end. Its top is a sloping structure, which is used to cover the enclosure 231 and prevent large pieces of material from falling in and blocking the enclosure 231.

[0061] The outer wall of the enclosure 231 contacts the grating 24.

[0062] Furthermore, the support frame 22 is a disc-shaped structure composed of several channel steels of different lengths interlaced and spliced ​​together, and its diameter is the same as the inner diameter of the desulfurization tower body 1.

[0063] Furthermore, each end of the channel steel on the support frame 22 is provided with a support block 222. The inclination angle of the support block 222 connected to the channel steel matches the inner wall of the desulfurization tower body 1, so that the support block 222 is tightly attached to the inner wall of the desulfurization tower body 1, which is used to provide lateral support and limit.

[0064] Before using the above-mentioned design structure, which can effectively reduce the clogging of desulfurization tower nozzles, the filtration device must be assembled first:

[0065] During assembly, operators weld ten support columns 21 vertically to the ground using No. 14 channel steel to the inner wall of the conical bottom of the desulfurization tower body 1. The ends of the support columns 21 are made to be of uniform height, parallel to the ground, and flush with the lowest point of the pre-set observation hole 13 on the side wall of the desulfurization tower body 1. Figure 5 As shown, a support frame 22 with a grid or star-shaped disc structure composed of seven No. 10 channel steels is used on the support column 21. The joints are fixed with stainless steel bolts. Support blocks 222 are welded to the ends of the channel steels of the support frame 22. Figure 9 As shown, the included angle between the support block 222 and the channel steel matches the angle at the contact point with the inner wall of the desulfurization tower body 1, achieving better support and lateral limiting effects, as shown. Figure 3 As shown; a cap 233 is fixedly connected to one end of the frame 232, and a barrier 231 is fixedly connected to the other end. The barrier 231 is made of stainless steel plate with a height of 20cm. After the barrier 231 surrounds the frame, a cavity is formed in the middle. The cap 233 is made of stainless steel plate welded into a triangular bevel to prevent large crystal blocks from falling into the cavity in the middle of the barrier 231. Its function is to prevent the crystalline block material from completely blocking the grid plate 24, and to prevent the solution from flowing into the circulation tank 14. During the production process, the crystalline block material on the inner wall of the desulfurization tower body 1 falls down and accumulates on the plane of this device, without entering the circulation tank 14, thus preventing clogging of the circulation system and the nozzles on the spray device 11.

[0066] Furthermore, the support column 21 is made of No. 14 channel steel, the support frame 22 is made of No. 10 channel steel, the connection and fixing points are made of M16×50 bolts, and the top of the protective cap 23 is made of 10mm stainless steel plate.

[0067] Furthermore, after the support column 21 is welded, the support frame 22 is fixed, and the protective cap 23 is manufactured and welded, a fiberglass grating plate 24 is installed in the plane space of the support frame 22. The grating plate 24 has a hole diameter of 40X40mm and a thickness of 50mm. The assembly of this utility model is then completed.

[0068] During operation, the operator turns on the power fan, allowing flue gas containing sulfur dioxide to enter the desulfurization tower body 1 through the pre-installed flue gas pipe 12 on the side wall. After entering, the flue gas rises, and by activating the spray device 11 and the circulation system, the desulfurization medium liquid is evenly dispersed from top to bottom in a mist spray from the spray system 11. This mist reacts chemically with the sulfur dioxide to generate water-insoluble sulfites, such as... Figure 1As shown, when the sulfur dioxide concentration is high or the desulfurization medium concentration is relatively large, crystals will form on the inner wall and top of the desulfurization tower body 1. The crystals will become thicker and thicker, and when they reach a certain thickness, they will naturally fall off under the action of gravity. The detached block crystals fall onto the grid plate 24 and are filtered by the grid plate 24. The crystals falling towards the center cannot fall into the enclosure 231 under the action of the protective cap 23, and are guided to the grid plate 24 on the side through the triangular structure of the cap top 233. The filtered desulfurization medium flows into the circulation tank 14 and returns to the spray device 11 through the circulation system for spraying operation.

[0069] After a period of desulfurization operation, crystals continuously form and clog the pores on the grid plate 24, preventing the desulfurization medium from draining quickly. When most of the pores on the grid plate 24 are blocked, the flow rate of the desulfurization medium into the circulation tank 14 slows down, leading to a buildup of the desulfurization medium and a rising liquid level. When the liquid level exceeds the height of the enclosure 231, the desulfurization medium overflows the enclosure 231 and flows from the central cavity of the enclosure 231 into the lower circulation tank 14. Figure 2 As shown, the remaining desulfurization medium flows from the gaps at the joints of the grid plates 24 or from the unblocked pores into the circulation tank 14, ensuring effective circulation of the desulfurization medium and the effectiveness of the desulfurization operation. After the desulfurization operation is completed, once all the desulfurization medium has flowed into the circulation tank 14, the operator opens the observation hole 13 and uses a rake 3, which is a combination of a long rod and a toothed steel plate, as shown. Figure 6 As shown, the crystals on the grid plate 24 are raked out through the observation hole 13 and processed according to the procedure, such as... Figure 7 As shown, after cleaning is completed, close the observation hole 13 and wait for the next desulfurization operation.

[0070] Example 2

[0071] This embodiment 2 is basically the same as embodiment 1, except that, as Figure 10-11 As shown, the support frame 22 also includes a telescopic rod 223. One end of the telescopic rod 223 is provided with a support block 222, and the other end is provided with a "U-shaped groove". Its width is smaller than the width of the inner wall of the channel steel groove. It is embedded in the channel steel groove and the telescopic rod 223 and the end of the channel steel are fixed by bolts passing through the "U-shaped groove" and the pre-set internal threaded hole at the end of the channel steel.

[0072] In this embodiment, the operator makes at least two internal threaded holes at the ends of the seven No. 10 channel steels on the support frame 22, welds the support block 22 to one end of the telescopic rod 223, and makes a "U-shaped groove" at the other end. The telescopic rod 223 and the end of the channel steel are fixed by bolts passing through the "U-shaped groove" and the pre-drilled internal threaded holes at the end of the channel steel. Figure 11As shown, the depth of the "U-shaped groove" is 100mm, 120mm, or 150mm, meaning the telescopic range is 100mm, 120mm, or 150mm. During the installation of the support frame 22, due to the design of the telescopic rod 223, by first shortening the telescopic rod 223, there is room for leveling the channel steel after splicing. Then, by extending the telescopic rod 223, the support block 222 contacts the inner wall of the desulfurization tower body 1 before tightening the fixing bolts. Figure 10 As shown, this achieves the function of fixing the telescopic rod 223, making the support frame 22 fit more closely with the inner wall of the desulfurization tower body 1, and achieving better lateral support and limiting effect.

[0073] Example 3

[0074] This embodiment 3 is basically the same as that of embodiments 1 and 2, except that, as Figure 12 As shown, a support strip 221 is also provided between the support frame 22 and the grating plate 24, which overlaps on the support frame 22 to match grating plates 24 of different sizes.

[0075] In this utility model, support bars 221 are provided to overlap the support frame 22 to match the grid plates 24 of different sizes. By overlapping several support bars 221, the grid plates 24 are effectively supported.

[0076] Example 4

[0077] This embodiment 4 is the same as embodiment 1, the only difference being that, Figure 13 As shown, the top of the cap 233 is a conical structure used to cover the enclosure 231.

[0078] In this utility model, a fan-shaped 316L stainless steel is spliced ​​into a conical structure as the top 233 of the protective cap 23, and welded to the frame 232 as a whole. After splicing, a conical cover is formed to cover the enclosure 231, preventing crystalline blocks falling from the top of the desulfurization tower body 1 from falling into the cavity in the middle of the enclosure 231. Due to the design of the frame 232, there is a gap between the top 233 and the enclosure 231. When the desulfurization medium liquid level is higher than the enclosure 231, the desulfurization medium flows over the enclosure 231 into the cavity in the middle of the enclosure 231, ensuring effective flow guidance and preventing blockage of the circulation system.

[0079] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A device for effectively reducing nozzle clogging in a desulfurization tower, comprising a filter device (2) installed within the desulfurization tower body (1), wherein the desulfurization tower body (1) includes a spray device (11), a flue gas duct (12), an observation hole (13), and a circulation tank (14), characterized in that, The filter device (2) includes: The support frame (22) is connected to the inner wall of the desulfurization tower body (1) by several support columns (21) at its lower end. The upper end is fixedly connected to the protective cap (23) at its middle part, and a grid plate (24) is laid from the protective cap (23) to the inner wall of the desulfurization tower body (1). Protective cap (23) is located in the middle of support frame (22) to prevent slurry from entering circulation tank (14) smoothly when grid plate (24) is blocked.

2. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 1, characterized in that, The protective cap (23) includes: The enclosure (231) is a rectangular frame structure. One end of the enclosure (231) is fixedly connected to the support frame (22), and the other end is connected to one end of the frame (232). The frame (232) is taller than the fence (231), and its other end is fixedly connected to the top of the cap (233); The top of the cap (233) is connected to the frame (232) at the end. Its top is a sloping structure, which is used to cover the enclosure (231) to prevent large pieces of material from falling in and blocking the enclosure (231). The outer wall of the enclosure (231) is in contact with the grating (24).

3. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 1, characterized in that, The support frame (22) is a disc-shaped structure made up of several channel steels of different lengths spliced ​​together, and its diameter is the same as the inner diameter of the desulfurization tower body (1).

4. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 3, characterized in that, The support frame (22) has a support block (222) at the end of the channel steel. The inclination angle of the support block (222) connected to the channel steel matches the inner wall of the desulfurization tower body (1), so that the support block (222) is tightly attached to the inner wall of the desulfurization tower body (1) to provide lateral support and limit.

5. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 4, characterized in that, The support frame (22) also includes: Telescopic rod (223) has a support block (222) at one end and a "U-shaped groove" at the other end. The width of the groove is smaller than the width between the inner walls of the channel steel. The telescopic rod (223) is embedded in the groove of the channel steel and the telescopic rod (223) and the end of the channel steel are fixed by bolts passing through the "U-shaped groove" and the pre-set internal threaded hole at the end of the channel steel.

6. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 1, characterized in that, The filter device (2) further includes: Support bars (221) are several in number and are set between the support frame (22) and the grating plate (24). They provide support for grating plates (24) of different sizes by overlapping on the support frame (22).

7. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 1, characterized in that, The support column (21) is a columnar structure of varying lengths, so that the plane of the support frame (22) is parallel to the ground and located at the lowest point of the observation hole (13) preset on the side wall of the desulfurization tower body (1).

8. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 1, characterized in that, The supporting column (21), support frame (22) and protective cap (23) are all made of 316L stainless steel.

9. The device for effectively reducing nozzle clogging in a desulfurization tower according to claim 5, characterized in that, The depth of the "U-shaped groove" provided on the telescopic rod (223) is between 100-150mm.

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