Coke oven tail gas scrubbing device

Abstract

The utility model discloses a coke oven tail gas washing device, including spray tower and washing mechanism, the spray tower is placed stable through the base, and one side bottom end is provided with the feed pipe of intercommunication, and the washing mechanism is arranged in the spray tower, and multiple are arranged in proper order from below to top, and the tail gas enters the spray tower after through the feed pipe, and passes through multiple washing mechanisms in proper order, and the tail gas after processing and washing is discharged through the blow tank of spray tower top, each washing mechanism all includes corrugated board filler and spray mechanism, the corrugated board filler is placed in the spray tower through the limiting mechanism, and the upper side all is provided with the spray mechanism of detachable installation in the spray tower, and the spray mechanism sprays the washing liquid to the gap of corrugated board filler, and is fully contacted with the tail gas. The utility model discloses compared with prior art's advantage lies in: multilayer corrugated board filler combines the spray mechanism, and the gas liquid contact area and contact time are increased greatly, and the mass transfer efficiency is improved, and the spray mechanism is detachable installation, and is convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of coke oven tail gas treatment technology, specifically to a coke oven tail gas scrubbing device. Background Technology

[0002] Coke oven gas is an important byproduct of the coking industry. During combustion or subsequent utilization, it produces exhaust gases containing large amounts of pollutants, such as hydrogen sulfide, ammonia, phenols, tar, and particulate matter. To achieve cleaner production, coke oven gas scrubbing and purification devices have become indispensable key equipment.

[0003] However, traditional spray towers have a simple structure and generally perform spraying directly, resulting in poor mass transfer between the washing liquid and the exhaust gas, low pollutant removal rate, and difficulty in meeting emission standards. Furthermore, the sprayers are mostly welded or fixed installations, and once blockage or damage occurs, maintenance is difficult and may even require a long downtime for treatment, affecting the continuity of production.

[0004] This necessitates a new type of coke oven exhaust gas scrubbing device. Utility Model Content

[0005] The technical problem this invention aims to solve is the poor washing efficiency and quality, as well as the difficulty in maintenance. The invention provides a novel coke oven exhaust gas washing device.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a coke oven tail gas scrubbing device, including a spray tower and a scrubbing mechanism;

[0007] After the spray tower is placed and stabilized by the base, a feed pipe is connected to the bottom of one side. The washing mechanism is set inside the spray tower, and multiple washing mechanisms are arranged from bottom to top. After the exhaust gas enters the spray tower through the feed pipe, it passes through multiple washing mechanisms in sequence. The treated exhaust gas is discharged through the discharge pipe at the top of the spray tower.

[0008] Each washing unit includes corrugated sheet packing and a spray mechanism;

[0009] After the corrugated plate packing is placed into the spray tower through the limiting mechanism, a spraying mechanism that can be detachably installed in the spray tower is set directly above it. The spraying mechanism sprays the washing liquid into the gaps of the corrugated plate packing, so that it can fully contact the exhaust gas.

[0010] As an improvement, the limiting mechanism includes a limiting fence, which is horizontally set inside the spray tower. Multiple openings are connected to one side of the spray tower, and each opening is sealed with a sealing cover. Each corrugated plate packing is inserted into the top surface of the limiting fence by opening the sealing cover. The size of each corrugated plate packing is adapted to the inner wall of the spray tower.

[0011] As an improvement, each sealing cover is equipped with a transparent observation window.

[0012] As an improvement, each spray mechanism can be detachably mounted on the limiting fence directly above. The spray mechanism includes a mounting plate, a spray plate, and a sprayer.

[0013] After the mounting plate and the limiting fence are detachably connected, a spray plate is installed on the bottom surface, and multiple spray plates are evenly arranged along the edge of the mounting plate. After the sprayers are evenly arranged on the bottom surface of the spray plate, they spray towards the corrugated plate filler on the limiting fence. The top surface of the mounting plate is detachably connected to the washing liquid pipe.

[0014] As an improvement, a pair of L-shaped plates are mirrored on the bottom surface of the limiting fence located directly above each spraying mechanism. After each mounting plate is placed between the two L-shaped plates, it is placed stably. After the bolts pass through the pre-set through holes on the L-shaped plates and the mounting plates, they are tightened with nuts.

[0015] As an improvement, multiple washing liquid pipes are set up to cooperate with each spraying mechanism. One end of the washing liquid pipe passes through the spraying tower and is connected to the external washing liquid. The other end extends to the space between the two L-shaped plates. A connecting pipe 1 is connected to the side near the mounting plate, and a connecting pipe 2 is connected to the top surface of the mounting plate. Both connecting pipe 1 and connecting pipe 2 are provided with external threads. After the mounting plate is placed between the two L-shaped plates, the top end of connecting pipe 2 is close to the bottom end of connecting pipe 1. One end of the threaded sleeve is threaded to connecting pipe 1, and the other end is threaded to connecting pipe 2.

[0016] As an improvement, a demister is also included. After extending into the discharge pipe, the demister is fixed by bolts to remove residual water mist in the exhaust gas.

[0017] The advantages of this utility model compared with the prior art are as follows:

[0018] 1. The multi-layer corrugated plate packing combined with the top uniform spraying mechanism greatly increases the gas-liquid contact area and contact time, improves mass transfer efficiency, and the washing liquid can fully wet the packing surface, enhancing the adsorption and dissolution of pollutants such as hydrogen sulfide, tar, and dust.

[0019] 2. The corrugated plate packing achieves independent layered installation through the limiting grid + sealing cover structure, supports quick replacement and cleaning, and does not require complete tower dismantling. Different materials can be selected for each layer of packing according to the exhaust gas composition, improving adaptability.

[0020] 3. The spraying mechanism is installed below the limiting fence by L-shaped plate clips and bolts, which is convenient for disassembly and assembly. Attached Figure Description

[0021] Figure 1 This is a perspective view of the operating state of a coke oven exhaust gas scrubbing device according to this utility model.

[0022] Figure 2This is a perspective view of the spray tower of a coke oven tail gas scrubbing device according to this utility model.

[0023] Figure 3 This is an internal sectional view of the spray tower of a coke oven tail gas scrubbing device according to the present invention, in use.

[0024] Figure 4 This is an internal sectional view of the spray tower of a coke oven tail gas scrubbing device according to this utility model.

[0025] Figure 5 This is a three-dimensional view of the corrugated plate packing of a coke oven exhaust gas scrubbing device according to this utility model.

[0026] Figure 6 This is a perspective view of the limiting grid of a coke oven exhaust gas scrubbing device according to this utility model.

[0027] Figure 7 This is a schematic diagram of the spray mechanism installation of a coke oven exhaust gas scrubbing device according to this utility model.

[0028] As shown in the figure: 1. Spray tower; 2. Feed pipe; 3. Discharge pipe; 4. Corrugated packing; 5. Limiting fence; 6. Sealing cover plate; 7. Transparent observation window; 8. Mounting plate; 9. Spray plate; 10. Sprayer; 11. Washing liquid pipe; 12. L-shaped plate; 13. Through hole; 14. Connecting pipe one; 15. Connecting pipe two; 16. External thread; 17. Connecting threaded sleeve; 18. Demister. Detailed Implementation

[0029] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. Example 1

[0031] A coke oven exhaust gas scrubbing device, combined with an attached Figure 1-5 As shown in Figure 7, the system includes a spray tower 1 and a washing mechanism. After the spray tower 1 is placed and stabilized by the base, a feed pipe 2 is connected to the bottom of one side. The washing mechanism is set inside the spray tower 1, and multiple washing mechanisms are arranged sequentially from bottom to top. After the exhaust gas enters the spray tower 1 through the feed pipe 2, it passes through multiple washing mechanisms in sequence. The treated and washed exhaust gas is discharged through the discharge pipe 3 at the top of the spray tower 1. The system also includes a demister 18. The demister 18 extends into the discharge pipe 3 and is fixed by bolts to remove residual water mist in the exhaust gas. This effectively removes water mist and fine droplets from the exhaust gas and prevents water from being discharged.

[0032] Each washing mechanism includes corrugated plate packing 4 and a spraying mechanism. After the corrugated plate packing 4 is placed into the spraying tower 1 through the limiting mechanism, a spraying mechanism that can be detachably installed in the spraying tower 1 is provided directly above it. The limiting mechanism includes a limiting fence 5, which is horizontally set in the spraying tower 1. Multiple openings are provided on one side of the spraying tower 1, and each opening is sealed by a sealing cover plate 6. Each corrugated plate packing 4 is placed into the top surface of the limiting fence 5 by opening the sealing cover plate 6. The size of each corrugated plate packing 4 is adapted to the inner wall of the spraying tower 1. Each sealing cover plate 6 is provided with a transparent observation window 7, which allows the operator to check the status of the packing and the spraying coverage in real time and to detect problems such as blockage or damage in a timely manner.

[0033] The spraying mechanism sprays the washing liquid into the gaps of the corrugated plate filler 4, ensuring full contact with the exhaust gas. Each spraying mechanism is detachably installed on the limiting fence 5 directly above. The spraying mechanism includes a mounting plate 8, a spray plate 9, and a sprayer 10. After the mounting plate 8 is detachably connected to the limiting fence 5, the bottom surface is connected to the spray plate 9, and multiple spray plates 9 are evenly arranged along the edge of the mounting plate 8. The sprayers 10 are evenly arranged on the bottom surface of the spray plate 9 and spray towards the corrugated plate filler 4 on the limiting fence 5. The top surface of the mounting plate 8 is detachably connected to the washing liquid pipe 11. Example 2

[0034] Based on Example 1, combined with Appendix Figure 6 As shown, a pair of L-shaped plates 12 are mirrored on the bottom surface of the limiting fence 5 located directly above each spraying mechanism. After each mounting plate 8 is placed between the two L-shaped plates 12, it is placed stably. After the bolt passes through the preset through holes 13 on the L-shaped plates 12 and the mounting plates 8, it is tightened by nuts.

[0035] Multiple washing liquid pipes 11 are provided to cooperate with each spraying mechanism. One end of the washing liquid pipe 11 passes through the spray tower 1 and is connected to the external washing liquid. The other end extends to the space between the two L-shaped plates 12. A connecting pipe 14 is provided on the side close to the mounting plate 8. A connecting pipe 2 15 is provided on the top surface of the mounting plate 8. Both the connecting pipe 14 and the connecting pipe 2 15 are provided with external threads 16. After the mounting plate 8 is placed between the two L-shaped plates 12, the top end of the connecting pipe 2 15 is close to the bottom end of the connecting pipe 14. One end of the threaded sleeve 17 is threaded to the connecting pipe 14, and the other end is threaded to the connecting pipe 2 15.

[0036] In the specific implementation of this utility model, the spray tower 1 is securely installed on the foundation by the base. According to the tail gas treatment requirements, each sealing cover 6 is opened, and the corrugated plate packing 4 is placed into the top surface of the corresponding limiting fence 5 in sequence. The spray mechanism is inserted into the lower part of the limiting fence 5 by the L-shaped plate 12. Bolts are used to pass through the through holes 13 on the mounting plate 8 and the L-shaped plate 12 to fasten the connection. The washing liquid pipe 11 is connected to the connecting pipe of the spray mechanism to ensure good sealing. The cover is closed and sealed.

[0037] When in use, the coke oven exhaust gas enters through the feed pipe 2 at the bottom of the spray tower 1. The exhaust gas passes through each washing mechanism from bottom to top and comes into full contact with the spray liquid in the gap of the corrugated plate packing 4 to complete the absorption and purification of pollutants. The purified exhaust gas is discharged through the top discharge pipe 3 and the residual water mist is removed by the demister 18.

[0038] Operators can check the spraying effect and packing status through the transparent observation window 7 on the sealing cover 6, record the changes in inlet and outlet gas concentrations regularly, and judge the washing effect. If a certain layer of packing is found to be severely blocked, the corresponding sealing cover 6 can be opened separately for replacement. If the sprayer 10 is blocked, the connecting threaded sleeve 17 can be loosened, the spraying mechanism can be disassembled for cleaning, and the demister 18 can be removed for cleaning or replacement regularly to ensure the demisting effect.

[0039] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A coke oven exhaust gas scrubbing device, characterized in that: Includes a spray tower (1) and a washing mechanism; After the spray tower (1) is placed and stabilized by the base, a feed pipe (2) is connected to the bottom of one side. The washing mechanism is set inside the spray tower (1), and multiple washing mechanisms are arranged from bottom to top. After the exhaust gas enters the spray tower (1) through the feed pipe (2), it passes through multiple washing mechanisms in sequence. The exhaust gas after washing is discharged through the discharge pipe (3) at the top of the spray tower (1). Each washing unit includes corrugated sheet packing (4) and a spraying mechanism; After the corrugated plate packing (4) is placed into the spray tower (1) through the limiting mechanism, a spraying mechanism that can be detachably installed in the spray tower (1) is provided directly above it. The spraying mechanism sprays the washing liquid into the gaps of the corrugated plate packing (4) so ​​that it can fully contact the exhaust gas.

2. The coke oven gas scrubbing device according to claim 1, characterized in that: The limiting mechanism includes a limiting fence (5), which is horizontally set inside the spray tower (1). Multiple openings are connected on one side of the spray tower (1), and each opening is sealed by a sealing cover plate (6). Each corrugated plate packing (4) is placed into the top surface of each limiting fence (5) by opening each sealing cover plate (6). The size of each corrugated plate packing (4) is adapted to the inner wall of the spray tower (1).

3. The coke oven gas scrubbing device according to claim 2, characterized in that: Each sealing cover (6) is provided with a transparent observation window (7).

4. The coke oven gas scrubbing device according to claim 2, characterized in that: Each spraying mechanism can be detachably installed on the limiting fence (5) directly above. The spraying mechanism includes a mounting plate (8), a spraying plate (9), and a sprayer (10). After the mounting plate (8) is detachably connected to the limiting fence (5), a spray plate (9) is provided on the bottom surface, and multiple spray plates (9) are evenly arranged along the edge of the mounting plate (8). After the sprayers (10) are evenly arranged on the bottom surface of the spray plate (9), they spray towards the corrugated plate filler (4) on the limiting fence (5). The top surface of the mounting plate (8) is detachably connected to the washing liquid pipe (11).

5. A coke oven tail gas scrubbing device according to claim 4, characterized in that: The bottom surface of the limiting fence (5) located directly above each spraying mechanism is mirrored with a pair of L-shaped plates (12). Each mounting plate (8) is placed between the two L-shaped plates (12) and then placed stably. After the bolt passes through the preset through holes (13) on the L-shaped plates (12) and the mounting plates (8), it is tightened by nuts.

6. A coke oven tail gas scrubbing device according to claim 5, characterized in that: Multiple washing liquid pipes (11) are set up in conjunction with each spraying mechanism. One end of the washing liquid pipe (11) passes through the spray tower (1) and is connected to the external washing liquid. The other end extends to the space between the two L-shaped plates (12). A connecting pipe (14) is connected to the side near the mounting plate (8). A connecting pipe (2) (15) is connected to the top surface of the mounting plate (8). Both the connecting pipe (14) and the connecting pipe (2) (15) are provided with external threads (16). After the mounting plate (8) is placed between the two L-shaped plates (12), the top end of the connecting pipe (2) (15) is close to the bottom end of the connecting pipe (14). One end of the connecting threaded sleeve (17) is threaded to the connecting pipe (14), and the other end is threaded to the connecting pipe (2) (15).

7. A coke oven exhaust gas scrubbing device according to claim 1, characterized in that: It also includes a demister (18), which extends into the discharge pipe (3) and is fixed by bolts to remove residual water mist in the exhaust gas.

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