Tail gas absorption tower for sulfuric acid production

Abstract

The utility model discloses a tail gas absorption tower for sulfuric acid production, which comprises a tower body, a gas inlet pipe is arranged at the bottom of one side of the tower body, a filter plate is arranged in the middle of the interior of the tower body, a through hole plate is arranged at the top, close to the filter plate, of the interior of the tower body, and a biological filler layer is arranged at the top of the through hole plate. An exhaust groove is formed in one side of the top of the tower body; the filter plate, the through hole plate, the biological filler layer, the delivery pipe, the spray pipe, the rotary joint, the gear A, the rotary pipe, the gear B, the rotary rod and the motor are matched with one another, so that lime water which reacts with tail gas can be uniformly distributed into the device by controlling the spray pipe to rotate, and the lime water can be fully contacted and reacted with sulfuric acid tail gas; when the dust collector is used, the dust can react with lime water at the bottom of the tower body firstly, then dust particles are filtered through the filter plate, then enter through holes in the through hole plate to be in contact reaction with the lime water again, and finally are biologically filtered through the biological filler layer.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid tail gas treatment, and specifically relates to a tail gas absorption tower for sulfuric acid production. Background Technique

[0002] Sulfuric acid is the most active binary inorganic strong acid, which can react with many metals. During the production process of sulfuric acid, a large amount of acid-containing gas is generated. The gas contains a large number of harmful substances, which will pollute the environment and endanger human health. Therefore, when the tail gas generated during sulfuric acid production is discharged, it needs to be treated through a tail gas absorption tower to remove the harmful substances in the gas;

[0003] The existing patent with the authorization announcement number "CN214552371U" discloses a tail gas absorption tower for sulfuric acid production, including a mounting plate and an absorption mechanism; Mounting plate: Mounting holes are symmetrically arranged at the four corners of its upper surface. An absorption tower is arranged on the upper surface of the mounting plate. An air inlet pipe is arranged at the air inlet on the left side of the absorption tower, a waste discharge pipe is arranged at the waste discharge port on the right side of the absorption tower, an air outlet pipe is arranged at the air outlet on the upper surface of the absorption tower, a feed pipe is arranged at the feed port on the upper surface of the absorption tower, a spraying rack is arranged at the top end inside the absorption tower, and the feed port on the upper surface of the spraying rack is connected to the feed port on the inner wall of the top end of the absorption tower through a pipeline. Spray heads are arranged at the discharge ports evenly distributed at the bottom end of the spraying rack; Absorption mechanism: It is arranged inside the absorption tower. This tail gas absorption tower for sulfuric acid production guides the flow direction of the tail gas during the absorption process, increases the contact time between the tail gas and lime water, and effectively improves the efficiency of tail gas absorption;

[0004] However, the following deficiencies exist in this device

[0005] 1. When the above device treats the tail gas, it is difficult to evenly distribute the tail gas into the device, resulting in insufficient contact between the tail gas and lime water, and the reaction effect on the tail gas is poor, reducing the treatment effect on the tail gas;

[0006] 2. When the above device treats sulfuric acid tail gas, the tail gas can only float upward naturally, failing to promote the flow of the tail gas, resulting in a slow flow rate of the tail gas and reducing the treatment speed of the tail gas. Content of the Utility Model

[0007] The purpose of the utility model is to provide a tail gas absorption tower for sulfuric acid production to solve the problems presented in the above background technique.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A tail gas absorption tower for sulfuric acid production, including a tower body. At the bottom of one side of the tower body, an air inlet pipe is provided. In the middle of the interior of the tower body, a filter plate is provided. Near the top of the filter plate inside the tower body, a through-hole plate is provided. On the top of the through-hole plate, a biological packing layer is provided. On one side of the top of the tower body, an exhaust groove is provided. At the top of one side inside the tower body, a fixing plate is provided. A rotating pipe is sleeved on one side of the fixing plate. At the bottom of the rotating pipe, a spray pipe is provided. At the top of the interior of the tower body, a rotary joint connected to the rotating pipe is provided. In the middle of the top of the tower body, a delivery pipe connected to the rotary joint is provided;

[0009] On one side of the top of the tower body near the exhaust groove, a motor is provided. At the output end of the motor, a rotating rod is provided. At the bottom of the rotating rod, a gear B is provided. In the middle of the outer side of the rotating pipe, a gear A meshing with the gear B is provided. Inside the exhaust groove, an exhaust component is provided.

[0010] Preferably, the exhaust component includes a fan blade, a chain, a sprocket A and a sprocket B. At the bottom inside the exhaust groove, a fan blade is sleeved. At the bottom of the fan blade, a sprocket A is provided. In the middle of the outer side of the rotating rod, a sprocket B is provided. The outer sides of the sprocket A and the sprocket B are jointly sleeved with a chain, which can accelerate the air flow speed inside the device.

[0011] Preferably, on one side of the top of the tower body away from the exhaust groove, a filter box is provided, and a filter screen is provided inside the filter box. One side of the delivery pipe is connected to the filter box. One end of the filter box is provided with a box door, which can filter the lime water.

[0012] Preferably, a plurality of groups of through-holes are evenly opened inside the through-hole plate, so that the tail gas can enter the through-holes and fully contact and react with the falling lime water.

[0013] Preferably, a ventilation plate is provided at the bottom of the biological packing layer, which can prevent the biological packing inside the biological packing layer from falling.

[0014] Preferably, at the bottom of one side of the tower body away from the air inlet pipe, a sewage discharge pipe is provided, and a valve is provided on the sewage discharge pipe, which is used to discharge the reacted lime water, and the opening and closing of the sewage discharge pipe can be controlled through the valve.

[0015] Compared with the prior art, the beneficial effects of the present utility model are: The tail gas absorption tower for sulfuric acid production;

[0016] 1. Through the mutual cooperation among the filter plate, through-hole plate, biological filler layer, delivery pipe, spray pipe, rotary joint, gear A, rotating pipe, gear B, rotating rod and motor, the device can evenly distribute the lime water reacting with the tail gas into the device by controlling the rotation of the spray pipe, so that it can fully contact and react with the sulfuric acid tail gas. During tail gas treatment, it can first react with the lime water at the bottom of the tower body, then filter the dust particles through the filter plate, and then enter the through-holes in the through-hole plate to react with the lime water again. Finally, it undergoes biological filtration through the biological filler layer. Through multiple filtration reactions, the harmful substances in the tail gas can be fully removed, improving the tail gas treatment effect of the device;

[0017] 2. Through the mutual cooperation among the fan blades, chain, sprocket A, sprocket B, rotating rod and motor, when spraying lime water by controlling the rotation of the spray pipe, the fan blades can be synchronously driven to rotate, thereby accelerating the air flow speed in the device, enabling the tail gas to be quickly discharged upward, and improving the tail gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of the present utility model;

[0019] Figure 2 is a front view cross-sectional view of the present utility model;

[0020] Figure 3 is the Figure 2 enlarged schematic view of the structure at A of the present utility model.

[0021] In the figure: 1, tower body; 2, intake pipe; 3, filter plate; 4, through-hole plate; 5, biological filler layer; 6, delivery pipe; 7, exhaust groove; 8, fan blades; 9, chain; 10, sprocket A; 11, spray pipe; 12, rotary joint; 13, gear A; 14, fixing plate; 15, rotating pipe; 16, gear B; 17, sprocket B; 18, rotating rod; 19, filter box; 20, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-3, an embodiment provided by the utility model: a tail gas absorption tower for sulfuric acid production, including a tower body 1. A gas inlet pipe 2 is provided at the bottom of one side of the tower body 1. A filter plate 3 is provided in the middle of the interior of the tower body 1. A through-hole plate 4 is provided at the top of the interior of the tower body 1 close to the filter plate 3. A plurality of groups of through-holes are evenly formed inside the through-hole plate 4, enabling the tail gas to enter the through-holes and fully contact and react with the falling lime water. A biological packing layer 5 is provided at the top of the through-hole plate 4. A ventilation plate is provided at the bottom of the biological packing layer 5 to prevent the biological packing inside the biological packing layer 5 from falling off;

[0024] An exhaust slot 7 is provided at one side of the top of the tower body 1. A fixing plate 14 is provided at the top of one side of the interior of the tower body 1. A rotating pipe 15 is sleeved on one side of the fixing plate 14. A spray pipe 11 is provided at the bottom of the rotating pipe 15. A rotary joint 12 connected to the rotating pipe 15 is provided at the top of the interior of the tower body 1. A conveying pipe 6 connected to the rotary joint 12 is provided in the middle of the top of the tower body 1;

[0025] A motor 20 is provided at one side of the top of the tower body 1 close to the exhaust slot 7. A rotating rod 18 is provided at the output end of the motor 20. A gear B16 is provided at the bottom of the rotating rod 18. A gear A13 meshing with the gear B16 is provided in the middle of the outer side of the rotating pipe 15. An exhaust air component is provided inside the exhaust slot 7.

[0026] Further, the exhaust air component includes a fan blade 8, a chain 9, a sprocket A10 and a sprocket B17. The fan blade 8 is sleeved at the bottom inside the exhaust slot 7. The sprocket A10 is provided at the bottom of the fan blade 8. The sprocket B17 is provided in the middle of the outer side of the rotating rod 18. The sprocket A10 and the sprocket B17 are jointly sleeved with the chain 9, which can accelerate the air flow speed inside the device.

[0027] Further, a filter box 19 is provided at one side of the top of the tower body 1 away from the exhaust slot 7. A filter net is provided inside the filter box 19. One side of the conveying pipe 6 is connected to the filter box 19. A box door is provided at one end of the filter box 19, which can filter the lime water to prevent impurities in the lime water from blocking the spray pipe 11. Opening the box door at one end of the filter box 19 can clean the filter net inside the filter box 19.

[0028] Further, a sewage discharge pipe is provided at the bottom of one side of the tower body 1 away from the gas inlet pipe 2. A valve is provided on the sewage discharge pipe for discharging the reacted lime water. The opening and closing of the sewage discharge pipe can be controlled through the valve.

[0029] Working principle: When the device treats the tail gas of sulfuric acid production, the sulfuric acid tail gas can be transported into the tower body 1 through the air inlet pipe 2. The lime water reacting with the tail gas can be transported into the device through the delivery pipe 6. The deflected lime water passing through the delivery pipe 6 can enter the rotating pipe 15 and then spray out from the spray pipe 11. At this time, start the motor 20 to operate. The motor 20 can drive the rotating rod 18 to rotate. Then, the rotating rod 18 can drive the rotating pipe 15 to rotate through the meshing of gear B16 and gear A13, so that the spray pipe 11 can rotate and spray out the lime water under the rotary connection of the rotary joint 12 and the delivery pipe 6, making the lime water evenly distributed.

[0030] The tail gas entering the device can first react with the lime water stored at the bottom of the tower body 1. The reacted tail gas is discharged upward and can be filtered through the filter plate 3, and then enters the inner through holes of the through hole plate 4 to contact the falling lime water for a secondary reaction. Then, it passes through the biological filler layer 5 for biological desulfurization. After multiple filtration reactions, the harmful substances in the tail gas can be removed.

[0031] When the rotating rod 18 rotates, it can drive the sprocket B17 to rotate. Then, the sprocket B17 can drive the sprocket A10 to rotate through the transmission of the chain 9, and then drive the fan blade 8 through the sprocket A10 to accelerate the air flow discharge speed in the device, thereby improving the tail gas treatment speed.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0033] In the description of the present utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A tail gas absorption tower for sulfuric acid production, comprising a tower body (1), characterized in that: An air inlet pipe (2) is provided at the bottom of one side of the tower body (1), a filter plate (3) is provided in the middle of the interior of the tower body (1), a through-hole plate (4) is provided near the top of the filter plate (3) in the interior of the tower body (1), a biological filler layer (5) is provided on the top of the through-hole plate (4), an exhaust groove (7) is provided on one side of the top of the tower body (1), a fixed plate (14) is provided at the top of one side of the interior of the tower body (1), a rotating pipe (15) is sleeved on one side of the fixed plate (14), a nozzle (11) is provided at the bottom of the rotating pipe (15), a rotary joint (12) connected to the rotating pipe (15) is provided at the top of the interior of the tower body (1), and a delivery pipe (6) connected to the rotary joint (12) is provided in the middle of the top of the tower body (1); A motor (20) is provided on one side of the top of the tower body (1) near the exhaust groove (7), a rotating rod (18) is provided at the output end of the motor (20), a gear B (16) is provided at the bottom of the rotating rod (18), a gear A (13) meshing with the gear B (16) is provided at the middle of the outer side of the rotating tube (15), and an exhaust assembly is provided on the inner side of the exhaust groove (7).

2. A tail gas absorption tower for sulfuric acid production according to claim 1, characterized in that: The exhaust assembly comprises a fan blade (8), a chain (9), a sprocket A (10) and a sprocket B (17); the fan blade (8) is sleeved on the bottom of the inner side of the exhaust groove (7); the sprocket A (10) is arranged on the bottom of the fan blade (8); the sprocket B (17) is arranged on the middle part of the outer side of the rotating rod (18); and the chain (9) is sleeved on the outer sides of the sprocket A (10) and the sprocket B (17).

3. The tail gas absorption tower for sulfuric acid production according to claim 1, characterized in that: A filter box (19) is provided on the side of the top of the tower body (1) away from the exhaust groove (7), and a filter screen is provided on the inner side of the filter box (19). One side of the delivery pipe (6) is connected to the filter box (19), and a box door is provided at one end of the filter box (19).

4. The tail gas absorption tower for sulfuric acid production according to claim 1, characterized in that: A plurality of groups of through holes are evenly arranged on the inner side of the through-hole plate (4).

5. The tail gas absorption tower for sulfuric acid production according to claim 1, characterized in that: A ventilation plate is provided at the bottom of the biological filler layer (5).

6. The tail gas absorption tower for sulfuric acid production according to claim 1, characterized in that: A sewage pipe is provided at the bottom of the tower body (1) on a side away from the air inlet pipe (2), and a valve is provided on the sewage pipe.

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