Tail gas absorption tower for preparing anthraquinone intermediate

Abstract

The utility model provides a tail gas absorption tower for preparing anthraquinone intermediates, and relates to the technical field of tail gas purification. The tail gas absorption tower for preparing the anthraquinone intermediate comprises a tower body, the lower surface of the tower body is connected with a cylinder, the inner wall of the cylinder is connected with a gas inlet pipe, the top of the gas inlet pipe is provided with a protective net, and a power mechanism is arranged in the gas inlet pipe. According to the tail gas absorption tower for preparing the anthraquinone intermediates, by arranging the arc-shaped plate, the sliding plate and other parts, tail gas is swung by the rotating arc-shaped plate when entering the cylinder, so that the tail gas is quickly diffused to the periphery, and then the tail gas uniformly passes through each round hole under the action of air pressure when passing through the sliding plate upwards; the effect of uniform rising is further achieved, and the effect of uniform purification is achieved, so that the problems that existing purification is not uniform, some tail gas can not be purified thoroughly, and meanwhile solvent waste is caused are solved.

Description

Technical Field

[0001] This utility model relates to an exhaust gas absorption tower, specifically an anthraquinone intermediate exhaust gas absorption tower, belonging to the technical field of exhaust gas purification. Background Technology

[0002] Anthraquinone intermediates are an important class of organic compounds and crucial intermediates in organic synthesis. They can be used to synthesize various anthraquinone dyes and are also fundamental raw materials for the synthesis of photosensitive dyes, optical sieve resins, pharmaceuticals, and pesticides, thus enjoying widespread use. However, the preparation of anthraquinone intermediates generates some harmful gases, such as sulfur dioxide and nitrogen oxides. These harmful gases are directly emitted into the atmosphere, causing air pollution. Therefore, existing systems typically install exhaust gas absorption towers to purify and neutralize these harmful gases, thereby mitigating their harm to the atmosphere.

[0003] Existing exhaust gas absorption towers typically involve first introducing exhaust gas into the tower at the bottom, allowing it to rise. Simultaneously, a spray system is installed at the top to spray organic solvents downwards. The organic solvents have similar compatibility with the organic waste gas, removing it through absorption, thus purifying the exhaust gas before release. However, existing towers generally use pipes to inject exhaust gas into the bottom, and some even have inlets on one side. This results in uneven exhaust gas distribution, with higher concentrations near the inlet and lower concentrations further away. The spray system, which typically sprays solvent evenly downwards, also contributes to uneven purification, potentially leaving some exhaust gas unpurified and wasting solvent. Therefore, we offer an anthraquinone intermediate-based exhaust gas absorption tower to address these issues. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a tail gas absorption tower for the preparation of anthraquinone intermediates, and the specific technical solution is as follows:

[0005] An anthraquinone intermediate tail gas absorption tower includes a tower body, a cylinder connected to the lower surface of the tower body, an air inlet pipe connected to the inner wall of the cylinder, a protective net installed at the top of the air inlet pipe, a power mechanism installed inside the air inlet pipe, an arc-shaped plate installed at the upper end of the power mechanism, multiple baffles connected to the inner wall of the tower body, a sliding plate slidably connected to the upper surface of the baffles, an adjustment mechanism installed on the side of the sliding plate, a filtration mechanism installed in the middle of the cylinder, and a spraying mechanism installed at the top of the tower body.

[0006] Preferably, an air outlet pipe is installed at the upper end of the tower body, and a fixing plate is provided below the air outlet pipe. The outer surface of the fixing plate is fixedly connected to the upper part of the tower body.

[0007] Preferably, the power mechanism includes an electric motor, the output end of which is connected to a rotating rod, the outer surface of which is rotatably connected to the air intake pipe, the upper end of which passes through a protective net and is connected to a baffle, and the lower part of the baffle is connected to multiple arc-shaped plates.

[0008] Preferably, the adjusting mechanism includes a long plate, the side of which is fixedly connected to the tower body, a sliding plate is slidably connected to the inner wall of the long plate, a threaded rod is rotatably connected to one side of the sliding plate, and the outer surface of the threaded rod is threadedly connected to the long plate.

[0009] Preferably, the filtration mechanism includes a fixed box, the side of which is connected to the air intake pipe, a filter assembly is slidably connected inside the fixed box, a pull plate is connected to one side of the filter assembly, and one side of the pull plate is detachably connected to the fixed box.

[0010] Preferably, the spraying mechanism includes a spray pipe, the outer surface of which is connected to the top of the tower body, and a spraying plate is connected to the lower part of the spray pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The tail gas absorption tower for the preparation of anthraquinone intermediates utilizes components such as arc-shaped plates and sliding plates. When the tail gas enters the cylinder, it passes through a protective net and is flung by the rotating arc-shaped plates, causing the tail gas to quickly diffuse outwards. This ensures that the tail gas is evenly distributed inside the cylinder. As it rises through the sliding plates, the tail gas is evenly distributed through each hole under air pressure, further achieving a uniform upward flow. This allows the tail gas to mix evenly with the liquid sprayed above, resulting in uniform purification. This solves the problems of uneven purification, incomplete purification of some tail gas, and solvent waste associated with existing methods.

[0013] 2. The tail gas absorption tower prepared from the anthraquinone intermediate is equipped with an adjustment mechanism and other components. By turning the threaded rod, the position of the sliding plate can be adjusted, allowing for fine-tuning of the sliding plate's horizontal position. The circular holes on the sliding plate move relative to the baffle rod, thereby adjusting the degree of obstruction of the circular holes by the baffle rod, thus changing the ventilation volume. When the velocity of the tail gas entering the cylinder is low, the position of the sliding plate can be adjusted to increase the air pressure inside the cylinder, causing the tail gas to move upward evenly from multiple circular holes. When the velocity of the tail gas entering the cylinder is too high, the baffle rod can be made not to obstruct the circular holes on the sliding plate, thereby increasing the air flow velocity and preventing excessive air pressure or affecting the intake efficiency, thus increasing its applicability. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the tower body in this utility model;

[0016] Figure 3 This is a cross-sectional view of the sliding plate in this utility model;

[0017] Figure 4 This is a cross-sectional view of the air intake pipe in this utility model;

[0018] Figure 5 This is a cross-sectional view of the fixing box in this utility model.

[0019] Figure Descriptions: 1. Tower body; 2. Cylinder; 3. Air inlet pipe; 4. Protective net; 5. Power mechanism; 501. Electric motor; 502. Rotating rod; 503. Baffle; 6. Arc plate; 7. Stop bar; 8. Sliding plate; 9. Adjustment mechanism; 901. Long plate; 902. Threaded rod; 10. Filtering mechanism; 1001. Fixing box; 1002. Filter assembly; 1003. Pull plate; 11. Spraying mechanism; 1101. Spray pipe; 1102. Spray plate; 12. Air outlet pipe; 13. Fixing plate; 14. Support component. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] Please see Figures 1-5 The system includes a tower body 1, a cylinder 2 connected to the lower surface of the tower body 1, an air inlet pipe 3 connected to the inner wall of the cylinder 2, a protective net 4 installed on the top of the air inlet pipe 3, a power mechanism 5 inside the air inlet pipe 3, an arc-shaped plate 6 at the upper end of the power mechanism 5, multiple baffles 7 connected to the inner wall of the tower body 1, a sliding plate 8 slidably connected to the upper surface of the baffles 7, an adjustment mechanism 9 on the side of the sliding plate 8, a filter mechanism 10 in the middle of the cylinder 2, a spraying mechanism 11 at the top of the tower body 1, and a support member 14 connected to the lower surface of the tower body 1. The support member 14 consists of a flat plate and a support rod above it, which can support the tower body 1 and other components. The protective net 4 uses a waterproof and ventilated filter. The net prevents water from entering the equipment or space while allowing air circulation. It also prevents liquid splashing and prevents liquid from entering the interior of the air intake pipe 3. The power mechanism 5 can drive multiple arc-shaped plates 6 to rotate. The arc-shaped plates 6 have a certain curvature. When the exhaust gas flows out from the top of the air intake pipe 3, it passes through the protective net 4 and is flung by the rotating arc-shaped plates 6, causing the exhaust gas to spread rapidly in all directions. This ensures that the exhaust gas is evenly located inside the cylinder 2. The sliding plate 8 has multiple round holes. When the exhaust gas passes upward through the sliding plate 8, under the action of air pressure, it passes evenly through each round hole, further achieving a uniform rising effect. This allows the exhaust gas to mix evenly with the liquid sprayed above for uniform purification.

[0022] An exhaust pipe 12 is installed at the upper end of the tower body 1, and a fixing plate 13 is provided below the exhaust pipe 12. The outer surface of the fixing plate 13 is fixedly connected to the upper part of the tower body 1. The exhaust pipe 12 is used to discharge the purified gas. The fixing plate 13 is provided with multiple round holes. At the same time, the fixing plate 13 increases the degree of uniform gas rise and prevents the gas from directly concentrating at the exhaust pipe 12.

[0023] The power mechanism 5 includes an electric motor 501. The output end of the electric motor 501 is connected to a rotating rod 502. The outer surface of the rotating rod 502 is rotatably connected to the air intake pipe 3. The upper end of the rotating rod 502 passes through the protective net 4 and is connected to a baffle 503. The lower part of the baffle 503 is connected to multiple arc-shaped plates 6. The electric motor 501 can drive the rotating rod 502 and the baffle 503 to rotate, thereby driving the arc-shaped plates 6 to rotate. The rotation speed does not need to be very fast. It is only necessary to prevent the exhaust gas from moving upward as soon as it comes out, so that the exhaust gas first disperses to the surroundings. A sealing sleeve is provided at the position where the rotating rod 502 contacts the air intake pipe 3 to prevent exhaust gas leakage. The horizontal area of ​​the baffle 503 is larger than that of the protective net 4, so it can shield the liquid above.

[0024] The adjusting mechanism 9 includes a long plate 901, the side of which is fixedly connected to the tower body 1. A sliding plate 8 is slidably connected to the inner wall of the long plate 901. A threaded rod 902 is rotatably connected to one side of the sliding plate 8. The outer surface of the threaded rod 902 is threadedly connected to the long plate 901. There are two long plates 901, which are respectively arranged on both sides of the tower body 1. The two ends of the sliding plates 8 are located in the inner wall of the long plate 901 and can slide. By turning the threaded rod 902, the position of the sliding plate 8 can be adjusted, allowing for fine-tuning of the horizontal position of the sliding plate 8. The circular hole on the sliding plate 8 moves relative to the stop rod 7. This adjusts the degree of obstruction of the round holes by the baffle 7, thereby changing the ventilation volume. When the speed at which the exhaust gas enters the cylinder 2 is low, the position of the sliding plate 8 can be adjusted to increase the air pressure inside the cylinder 2, so that the exhaust gas moves upward evenly from multiple round holes. When the speed at which the exhaust gas enters the cylinder 2 is too high, the baffle 7 can be made not to obstruct the round holes on the sliding plate 8, thereby increasing the air flow speed and preventing excessive air pressure or affecting the intake efficiency. The long plate 901 mainly provides the sliding plate 8 with a space for horizontal movement, allowing the sliding plate 8 to move horizontally to a certain extent.

[0025] The filtration mechanism 10 includes a fixed box 1001, the side of which is connected to the air intake pipe 3. A filter assembly 1002 is slidably connected inside the fixed box 1001. A pull plate 1003 is connected to one side of the filter assembly 1002. One side of the pull plate 1003 is detachably connected to the fixed box 1001. The fixed box 1001 divides the air intake pipe 3 into two sections, allowing the exhaust gas to pass through the filter assembly 1002. The filter assembly 1002 uses a fixed filter screen, which can intercept solid particles in the exhaust gas and filter the exhaust gas. After a period of use, the pull plate 1003 can be removed to clean the filter assembly 1002. The pull plate 1003 is fixed to the fixed box 1001 with bolts and can be disassembled.

[0026] The spraying mechanism 11 includes a spray pipe 1101. The outer surface of the spray pipe 1101 is connected to the top of the tower body 1. The lower part of the spray pipe 1101 is connected to a spray plate 1102. The spray pipe 1101 is connected to an external liquid supply component, which is a common practice. The liquid supply component will not be described in detail here. The spray plate 1102 is equipped with multiple atomizing nozzles, which can spray liquid downwards to achieve purification. When the liquid reaches the bottom of the cylinder 2, the upper end of the air inlet pipe 3 is higher than the inner bottom wall of the cylinder 2 to prevent liquid from entering the air inlet pipe 3. The bottom of the cylinder 2 is connected to an outlet pipe to release the used liquid.

[0027] The electric motor 501 in this application is a common electrical device in the prior art. This application will not elaborate on its model or internal structure. It can also be replaced by other power sources.

[0028] In use, the exhaust gas enters the cylinder 2 through the inlet pipe 3, passes through the purification pipe, and is then released through the outlet pipe 12. The sprayed solvent is sprayed in by the spraying mechanism 11 and falls into the cylinder 2 under gravity, flowing out from the outlet. When the exhaust gas enters the cylinder 2, it passes through the protective net 4 and is flung by the rotating arc plate 6, causing the exhaust gas to spread rapidly in all directions, thus ensuring that the exhaust gas is evenly distributed inside the cylinder 2. When it passes through the sliding plate 8, under the action of air pressure, the exhaust gas passes evenly through each hole, further achieving a uniform rising effect. This allows the exhaust gas to mix evenly with the liquid sprayed above, achieving uniform purification and a uniform purification effect.

[0029] By turning the threaded rod 902, the position of the sliding plate 8 can be adjusted, allowing for fine-tuning of the horizontal position of the sliding plate 8. The circular holes on the sliding plate 8 move relative to the baffle rod 7, thereby adjusting the degree of obstruction of the circular holes by the baffle rod 7 to change the ventilation volume. When the velocity of the exhaust gas entering the cylinder 2 is low, the position of the sliding plate 8 can be adjusted to increase the air pressure inside the cylinder 2, causing the exhaust gas to move upward evenly from multiple circular holes. When the velocity of the exhaust gas entering the cylinder 2 is too high, the baffle rod 7 can be de-obstructed from blocking the circular holes on the sliding plate 8, thereby increasing the airflow speed and preventing excessive air pressure or affecting the intake efficiency, thus increasing applicability.

[0030] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A tail gas absorption tower for use with anthraquinone intermediates, comprising a tower body (1), characterized in that: The lower surface of the tower body (1) is connected to a cylinder (2), the inner wall of the cylinder (2) is connected to an air inlet pipe (3), a protective net (4) is installed on the top of the air inlet pipe (3), a power mechanism (5) is provided inside the air inlet pipe (3), an arc plate (6) is provided at the upper end of the power mechanism (5), multiple baffles (7) are connected to the inner wall of the tower body (1), a sliding plate (8) is slidably connected to the upper surface of the baffles (7), an adjustment mechanism (9) is provided on the side of the sliding plate (8), a filter mechanism (10) is provided in the middle of the cylinder (2), and a spraying mechanism (11) is provided at the upper part of the tower body (1).

2. The tail gas absorption tower for use with anthraquinone intermediates according to claim 1, characterized in that: An air outlet pipe (12) is installed at the upper end of the tower body (1), and a fixing plate (13) is provided below the air outlet pipe (12). The outer surface of the fixing plate (13) is fixedly connected to the upper part of the tower body (1).

3. The tail gas absorption tower for use with anthraquinone intermediates according to claim 1, characterized in that: The power mechanism (5) includes an electric motor (501), the output end of which is connected to a rotating rod (502). The outer surface of the rotating rod (502) is rotatably connected to the air intake pipe (3). The upper end of the rotating rod (502) passes through the protective net (4) and is connected to a baffle (503). The lower part of the baffle (503) is connected to multiple arc-shaped plates 6.

4. The tail gas absorption tower for use with anthraquinone intermediates according to claim 1, characterized in that: The adjustment mechanism (9) includes a long plate (901), the side of which is fixedly connected to the tower body (1), a sliding plate (8) is slidably connected to the inner wall of the long plate (901), and a threaded rod (902) is rotatably connected to one side of the sliding plate (8), and the outer surface of the threaded rod (902) is threadedly connected to the long plate (901).

5. The tail gas absorption tower for use with anthraquinone intermediates according to claim 1, characterized in that: The filter mechanism (10) includes a fixed box (1001), the side of which is connected to the air inlet pipe (3), and a filter assembly (1002) is slidably connected inside the fixed box (1001). A pull plate (1003) is connected to one side of the filter assembly (1002), and one side of the pull plate (1003) is detachably connected to the fixed box (1001).

6. The tail gas absorption tower for use with anthraquinone intermediates according to claim 1, characterized in that: The spraying mechanism (11) includes a spray pipe (1101), the outer surface of which is connected to the top of the tower body (1), and a spray plate (1102) is connected to the lower part of the spray pipe (1101).

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