A spray type acid tail gas absorption tower

Abstract

The utility model discloses a kind of spray type acidic tail gas absorption towers, belong to waste gas treatment technical field, including tower body, spray pipe and the packing box composition;Packing box is composed of funnel-shaped roof and filter plate;Funnel-shaped roof has filter screen area and shielding area, filter plate is equipped with partition box, vertical shaft is equipped in tower body, scraper is equipped on the shaft sleeve.The scraper of the tail gas absorption tower of the utility model can clean the solid particles adhered on the funnel-shaped roof, improve the service life of packing, and the filter plate can drive the partition box to rotate, so that the packing located in the shielding area is switched to the filter screen area to work, reduce the frequency of artificial replacement of packing, save labor cost.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a spray-type acidic tail gas absorption tower. Background Technology

[0002] In recent years, environmental protection issues have become increasingly prominent. In order to achieve sustainable development and improve the environment, it is necessary to treat the waste gas emissions of enterprises. Most enterprises and factories generally treat industrial waste gas through waste gas absorption towers. For the treatment of acidic waste gas, waste gas absorption towers usually adopt the spray deacidification method: an alkaline solution is sprayed into the absorption tower to neutralize the acidic waste gas with the alkaline liquid.

[0003] Because the reaction between alkaline solution and acidic exhaust gas produces solid particles, existing exhaust gas absorption towers will cause these solid particles to adhere to the packing layer after working for a period of time, resulting in blockage of the packing layer. The alkaline solution cannot fully enter the packing layer, and the acidic gas cannot be discharged, resulting in a deterioration in the exhaust gas treatment effect and a reduction in efficiency of the exhaust gas absorption tower. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a spray-type acidic tail gas absorption tower.

[0005] The technical solution of this utility model is: a spray-type acidic tail gas absorption tower, comprising a tower body, a spray pipe disposed within the tower body, and a packing box disposed below the spray pipe and connected to the inner wall of the tower body; the packing box comprises a funnel-shaped top plate and a filter plate rotatably connected to the tower body; the funnel-shaped top plate has multiple spaced filter areas and shielding areas, the filter plate is provided with a partition box having multiple compartments, a rotating shaft is vertically disposed within the tower body, a scraper for cleaning the funnel-shaped top plate is sleeved on the rotating shaft, and an air inlet pipe is disposed on the side wall of the tower body.

[0006] Explanation: As the exhaust gas moves upward, the exhaust gas in the above-mentioned exhaust gas absorption tower reacts with the alkaline solution sprayed by the spray pipe to remove acidic substances in the exhaust gas. Some of the solid particles generated by the reaction between the exhaust gas and the alkaline solution fall onto the funnel-shaped top plate. When the shaft rotates, it drives the scraper to rotate and clean the solid particles attached to the funnel-shaped top plate, reducing the number of solid particles falling into the packing and improving the service life of the packing. After a period of use, the filter plate can also drive the partition box to rotate, allowing the packing located in the shielded area to switch to the filter screen area for operation, reducing the frequency of manual packing replacement and saving labor costs.

[0007] Furthermore, each compartment of the partition box is equipped with a stirring shaft that rotates laterally, and one end of the stirring shaft is equipped with a friction wheel. The inner wall of the tower is provided with a friction ring for rotating with the filter plate to drive the friction wheel to rotate.

[0008] Explanation: When the filter plate rotates, the friction wheel will rotate under the action of the friction ring, causing the stirring shaft to rotate and stir the packing. This ensures that the bottom packing is agitated, preventing only a portion of the packing from coming into contact with the exhaust gas.

[0009] Furthermore, a negative pressure blade is fitted onto the rotating shaft.

[0010] Note: The rotating shaft can drive the negative pressure blades to rotate, causing the exhaust gas to move upward and preventing it from settling inside the absorption tower and being unable to be discharged.

[0011] As an optional embodiment of this utility model, the funnel-shaped top plate and the filter plate are connected by a slag discharge pipe, and the slag discharge pipe is equipped with an electrically controlled valve for controlling its opening and closing.

[0012] Note: The electric valve can control the slag discharge pipe to automatically discharge solid particles, avoiding frequent manual cleaning and reducing labor costs.

[0013] As another optional solution of this utility model, the funnel-shaped top plate is connected to the filter plate through a slag discharge pipe. A slag collection plate for collecting filter slag is slidably provided in the slag discharge pipe. A fixing ring is provided in the slag discharge pipe below the slag collection plate. The slag collection plate and the fixing ring are connected by a spring. A pressing rod is provided at the lower end of the slag collection plate, and a trigger switch is provided on the fixing ring to turn on the motor that drives the filter plate to rotate by lowering the pressing rod.

[0014] Note: As the usage time increases, solid particles will continuously accumulate on the slag collection plate and fall under the action of gravity. Since the amount of solid particles on the slag collection plate can indirectly reflect the usage of the packing, when a large amount of solid particles accumulate on the slag collection plate, the pressing rod will contact the trigger switch, causing the motor to start and switch the packing corresponding to the filter screen area. This is more accurate than manual control.

[0015] The beneficial effects of this utility model are:

[0016] (1) The scraper of the exhaust gas absorption tower of this utility model can clean the solid particles attached to the funnel-shaped top plate, improve the service life of the packing, and the filter plate can drive the partition box to rotate, so that the packing located in the shielding area can switch to the filter screen area to work, reduce the frequency of manual replacement of the packing, and save labor costs.

[0017] (2) When the filter plate of the tail gas absorption tower of this utility model rotates, the friction wheel will rotate under the action of the friction ring, causing the stirring shaft to rotate and stir the packing, so that the bottom packing can be stirred, avoiding only some of the packing being in contact with the tail gas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0019] Figure 2This is a schematic diagram of the stuffing box structure of Embodiment 1 of this utility model;

[0020] Figure 3 This is a longitudinal sectional view of the stuffing box in Embodiment 1 of this utility model;

[0021] Figure 4 This is a longitudinal sectional view of the stuffing box in Embodiment 2 of this utility model;

[0022] Figure 5 This is a longitudinal sectional view of the slag discharge pipe in Embodiment 3 of this utility model;

[0023] Among them, 1-tower body, 11-air inlet pipe, 12-rotating shaft, 13-scraper, 14-negative pressure blade, 15-demister, 16-motor, 2-spray pipe, 3-packing box, 31-funnel-shaped top plate, 32-slag discharge pipe, 33-filter plate, 34-separation box, 35-stirring shaft, 351-friction wheel, 36-friction ring, 37-slag collection plate, 371-pressing rod, 38-fixing ring. Detailed Implementation

[0024] The present invention will now be described in more detail with reference to specific embodiments, so as to better demonstrate the advantages of the present invention.

[0025] Example 1: As Figure 1 As shown, a spray-type acidic tail gas absorption tower includes a tower body 1, a spray pipe 2 disposed within the tower body 1, and a packing box 3 disposed below the spray pipe 2 and connected to the inner wall of the tower body 1; the spray pipe 2 adopts existing technology products, such as... Figure 2 As shown, the packing box 3 consists of a funnel-shaped top plate 31 and a filter plate 33 rotatably connected to the tower body 1; the funnel-shaped top plate 31 has four filter screen areas and four shielding areas spaced apart; the filter plate 33 is provided with a partition box 34 with eight compartments; the bottom surface of the partition box 34 has filter holes; a rotating shaft 12 is vertically provided inside the tower body 1; a scraper 13 for cleaning the funnel-shaped top plate 31 is sleeved on the rotating shaft 12; a negative pressure blade 14 is sleeved on the rotating shaft 12; and the upper end of the rotating shaft 12 passes through the tower body 1 and is provided with a drive motor, which adopts existing technology products;

[0026] An air inlet pipe 11 is provided on the side wall of the tower body 1, and an exhaust port is provided on the top surface of the tower body 1. A demister 15 is provided inside the tower body 1 located above the spray pipe 2. The demister 15 adopts existing technology products. The funnel-shaped top plate 31 is connected to the filter plate 33 through the slag discharge pipe 32. The filter plate 33 is rotatably connected to the slag discharge pipe 32. An electrically controlled valve for controlling its opening and closing is provided inside the slag discharge pipe 32. The electrically controlled valve adopts existing technology products.

[0027] like Figure 3As shown, the tower body 1 is equipped with a drive unit for driving the filter plate 33 to rotate to switch the compartment to be in the filter area or the shielding area. The drive unit is a motor 16 installed on the bottom surface of the tower body 1. The motor 16 adopts existing technology products. The output shaft of the motor 16 passes through the bottom surface of the tower body 1 and is fixedly connected to the filter plate 33 through two connecting rods.

[0028] The working principle of the above-mentioned exhaust gas absorption tower is as follows: Each compartment of the partition box 34 is filled with packing material. Exhaust gas is introduced through the air inlet pipe 11. The negative pressure blades 14 are rotated by the rotating shaft 12, causing the exhaust gas to flow upward. Alkali solution is released through the spray pipe 2. The exhaust gas will pass through the packing box 3 and react with the alkali solution. The solid particles produced after the reaction will fall onto the funnel-shaped top plate 31. The rotating shaft 12 will drive the scraper 13 to clean the funnel-shaped top plate 31, so that the solid particles fall into the slag discharge pipe 32. The solid particles are discharged by opening the electrically controlled valve. After a period of use, the filter plate 33 is rotated by the motor 16. The filter plate 33 drives the partition box 34 to rotate, switching the compartments that were originally in the shielded area to the filter screen area.

[0029] Example 2: Figure 4 As shown, this embodiment is basically the same as embodiment 1, except that each compartment of the partition box 34 is provided with a stirring shaft 35 that rotates laterally, and a friction wheel 351 is provided at the right end of the stirring shaft 35. A friction ring 36 is provided on the inner wall of the tower body 1 for rotating and cooperating with the filter plate 33 to drive the friction wheel to rotate.

[0030] The working principle of the above-mentioned separator box 34 is as follows: when the filter plate 33 rotates, the stirring shaft 35 will rotate with the filter plate 33. Under the action of the friction ring 36, the friction wheel 351 will drive the stirring shaft 35 to rotate and stir the packing in the compartment.

[0031] Example 3: As Figure 5 As shown, this embodiment is basically the same as embodiment 1, except that the funnel-shaped top plate 31 and the filter plate 33 are connected by a slag discharge pipe 32. A slag collection plate 37 for collecting filter slag is slidably provided in the slag discharge pipe 32. A fixing ring 38 is provided in the slag discharge pipe 32 below the slag collection plate 37. The slag collection plate 37 and the fixing ring 38 are connected by a spring. A pressing rod 371 is provided at the lower end of the slag collection plate 37. A trigger switch is provided on the fixing ring 38 to turn on the motor 16 that drives the filter plate 33 to rotate by lowering the pressing rod 371. The trigger switch adopts a prior art product. A PLC sensor is provided in the tower body 1. The PLC sensor adopts a prior art product. The motor 16 adopts a commercially available servo motor. The trigger switch and the motor 16 are both electrically connected to the PLC sensor.

[0032] The working principle of the above-mentioned slag collection plate 37 is as follows: as the usage time increases, more and more solid particles are added to the slag collection plate 37, and the slag collection plate 37 will descend accordingly. When the pressing rod 371 contacts the trigger switch, the PLC sensor controls the motor 16 to rotate, which causes the filter plate 33 to drive the separator box 34 to rotate, switching the compartment that was originally in the shielded area to the filter screen area.

Claims

1. A spray-type sour tail gas absorber characterized by, It includes a tower body (1), a spray pipe (2) installed inside the tower body (1), and a packing box (3) installed below the spray pipe (2) and connected to the inner wall of the tower body (1); the packing box (3) consists of a funnel-shaped top plate (31) and a filter plate (33) rotatably connected to the tower body (1); the funnel-shaped top plate (31) has multiple spaced filter areas and shielding areas, the filter plate (33) is provided with a partition box (34) with multiple compartments, the tower body (1) is vertically provided with a rotating shaft (12), and a scraper (13) for cleaning the funnel-shaped top plate (31) is sleeved on the rotating shaft (12).

2. The spray-type acidic tail gas absorption tower according to claim 1, characterized in that, Each compartment of the partition box (34) is equipped with a stirring shaft (35) that rotates laterally. One end of the stirring shaft (35) is equipped with a friction wheel (351). The inner wall of the tower body (1) is equipped with a friction ring (36) for rotating with the filter plate (33) to drive the friction wheel to rotate.

3. The spray-type acidic tail gas absorption tower according to claim 1, characterized in that, A negative pressure blade (14) is fitted onto the rotating shaft (12).

4. The spray-type sour gas absorption tower according to claim 1, characterized in that, The funnel-shaped top plate (31) and the filter plate (33) are connected by a slag discharge pipe (32), and the slag discharge pipe (32) is equipped with an electrically controlled valve for controlling its opening and closing.

5. The spray-type sour gas absorber of claim 1, wherein The funnel-shaped top plate (31) and the filter plate (33) are connected by a slag discharge pipe (32). A slag collection plate (37) for collecting filter slag is slidably provided in the slag discharge pipe (32). A fixing ring (38) is provided in the slag discharge pipe (32) below the slag collection plate (37). The slag collection plate (37) and the fixing ring (38) are connected by a spring. A pressing rod (371) is provided at the lower end of the slag collection plate (37), and a trigger switch is provided on the fixing ring (38) to turn on the motor that drives the filter plate (33) to rotate by lowering the pressing rod (371).

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