A spraying device for closed absorption of alkaline gas

Abstract

The utility model discloses a kind of alkaline gas closed absorption's spray device, including spray tower structure and spray structure, the bottom of the spray tower structure is provided with water storage area, the spray structure is erected in the directly above of cyclone plate and is provided with two groups, and the directly above of spray structure is erected with demister. The spray device of the alkaline gas closed absorption, by being provided with two groups of cyclone plate in the inside of spray tower structure, using its structure can possibly ensure gas in the inside of spray tower structure carries out gas-liquid exchange, gas-water separation and the effect of desulfurization demisting, and two groups of spray structure are set between cyclone plate and demister, alkaline substance in gas can be removed by spraying reagent simultaneously, and also by the group of spray structure close to top using its own structure mobility realizes structure adjustment and provides the effect of cleaning for demister, realizes self-cleaning effect on structure.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a spray device for closed absorption of alkaline gas. Background Technology

[0002] A spray tower is a device used to treat waste gas, also known as a water scrubbing tower or washing tower. It reduces the concentration of harmful substances in the waste gas by ensuring sufficient contact between the waste gas and a liquid, utilizing the solubility of the waste gas components in water or through chemical reactions, thereby ensuring that the emitted gases meet national environmental protection standards. The structure of a spray tower includes a casing, circulating liquid, packing layer, atomizing layer, and spray layer.

[0003] Conventional spray towers have separate spray equipment to clean the surface of the demister inside, which increases the overall cost of the device. In addition, since the demister and cyclone plate are in constant contact with alkaline gases, these two structures need to be maintained regularly to ensure the effective operation of the device, which further increases the operating cost of the equipment.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a spray device for closed absorption of alkaline gas. Utility Model Content

[0005] The purpose of this invention is to provide a spray device for the closed absorption of alkaline gases, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spray device for closed absorption of alkaline gas, comprising a spray tower structure and a spray structure. The bottom of the spray tower structure is provided with a water storage area, and a filter plate is provided in the middle of the water storage area. A gas supply pipe is connected to the top of the filter plate. Two sets of swirl plates are mounted directly above the filter plate. The spray structure is mounted directly above the swirl plates and has two sets of swirl plates. A demister is mounted directly above the spray structure. The spray structure includes a fixed ring frame, an adjusting frame, an atomizing nozzle, a connecting hose, and an external water supply pipe. An adjusting frame is installed on the inner diameter surface of the fixed ring frame, and an atomizing nozzle is installed at the end of the adjusting frame away from the fixed ring frame. A connecting hose is connected to the end of the atomizing nozzle away from the output end, and an external water supply pipe is connected to the end of the connecting hose away from the atomizing nozzle.

[0007] Furthermore, the spray tower structure includes a tower body structure, an air outlet, an air inlet, a sewage outlet, a level gauge port, and a water pump inlet. The air outlet is installed on the top of the tower body structure, and an air inlet is provided on one side of the lower end of the tower body structure. A sewage outlet is provided on the lower end of the tower body structure on the side away from the air outlet, and two sets of level gauge ports are provided on the side of the sewage outlet away from the air outlet. At the same time, a water pump inlet is provided on the side of the level gauge ports away from the sewage outlet.

[0008] Furthermore, the tower structure adopts a three-section structure and is connected and fixed to each other using a flange structure, and the air outlet is welded to the tower structure support.

[0009] Furthermore, one end of the air outlet is connected to the end of the air supply pipe away from the filter plate, and the side surface of the filter plate is provided with an air outlet structure.

[0010] Furthermore, the swirl plate includes swirl blades, a protective coating, a cover, and a sealing rotating frame. The surface of the swirl blades is coated with a protective coating, and the edge of the swirl blades is connected to the cover. The outer side of the cover is connected to and installed with a sealing rotating frame.

[0011] Furthermore, the swirl blades are arranged in a ring array with the center of the shroud as the center, and the swirl blades and the shroud are fixedly connected to each other and achieve vertical axial rotation through a sealed rotating frame.

[0012] Furthermore, the demister includes a sealing ring frame, corrugated blades, and a protective coating. The corrugated blades are equidistantly arranged inside the sealing ring frame, and the outer surface of the corrugated blades is coated with a protective coating.

[0013] Furthermore, the adjusting frame is arranged in a ring array structure with the center of the fixed ring frame as the center, the connecting hose adopts a gooseneck tube structure, and the connecting hose and the external water supply pipe are connected to each other through a quick connector structure. Moreover, the external water supply pipe is located on the outside of the spray tower structure, and the protective coating and the protective coating are made of the same material.

[0014] This invention provides a spray device for the closed absorption of alkaline gases, which has the following beneficial effects:

[0015] 1. This utility model, by arranging a set of spray structures at the top and bottom of the area between the swirl plate and the demister, wherein the atomizing nozzles are mounted on the inner wall surface of the fixed ring frame using an adjusting frame, and by utilizing the structural mobility of the adjusting frame, the output end of the atomizing nozzles can be adjusted vertically by swinging up and down, and horizontally by rotating axially. Using this structure, on the one hand, the spraying direction of multiple atomizing nozzles can be adjusted to achieve mutual cooperation, thereby spraying the alkaline gas conveyed from bottom to top inside the spray tower structure with the alkali-removing agent, ensuring sufficient interaction between the atomized agent and the gas, and minimizing the possibility of leakage. On the other hand, the structural adjustability of the adjusting frame allows the atomizing nozzles near the top of the spray tower structure to be adjusted. The orientation is adjusted to allow for spraying and cleaning of the demister directly above it. This reduces the need for additional spray structures, lowering the overall operating cost of the device, while ensuring the demister functions effectively and preventing excessive foreign matter buildup on its surface over time, which could impair its demisting and alkali-removing capabilities. This ensures both the stability of the overall device structure and its operational flexibility. Furthermore, the connecting hose utilizes a gooseneck design, which offers excellent flexibility, corrosion resistance, and high-temperature resistance. This prevents unnecessary interference with the external water supply pipe when adjusting the atomizing nozzle using the adjustment bracket. The design is also suitable for alkaline gas treatment environments, reducing maintenance and extending the lifespan of structural components.

[0016] 2. This utility model, by horizontally mounting two sets of swirl plates directly above the water storage area, includes a shroud with swirl blades and a sealing rotary frame. The sealing rotary frame is a structure used to prevent media leakage and the entry of external impurities into the equipment. It is widely used in various rotating equipment, such as bearings, pumps, and rotary joints. Its main components include a sealing ring and a rotor. The sealing ring is a circular metal or rubber ring with an inner diameter matching the shaft, allowing it to rotate. The rotor is a circular metal or rubber ring with an outer diameter matching the sealing ring, allowing it to contact and rotate. This structural mobility provided by the sealing rotary frame ensures that the shroud with the swirl blades has sufficiently stable axial rotation. It also prevents unnecessary structural leakage at the connection between the swirl plates and the inner wall of the spray tower structure, and prevents airflow from directly impacting the tower wall and causing mist entrainment. Furthermore, by spraying water onto the surfaces of the swirl blades and corrugated blades... The device is coated with a protective coating and a protective coating, both made of polytetrafluoroethylene (PTFE). Utilizing PTFE's resistance to most chemicals, including strong acids, strong alkalis, and organic solvents, and its near insolubility in all solvents, it provides sufficient structural protection for the swirl blades and corrugated blades. This ensures the surface maintains sufficient structural strength even during prolonged contact with alkaline gases, reducing maintenance costs and extending service life. Furthermore, the non-stick properties of PTFE and its extremely low coefficient of friction result in smooth surfaces on the swirl and corrugated blades, reducing frictional resistance. This allows atomized particles in the gas to quickly fall off due to scouring or gravity after adhering to the surface of the blades, minimizing the adhesion of impurities and contaminants that hinder cleaning. Combined with the spray structure, this enhances the self-cleaning capability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of a spray device for closed absorption of alkaline gas according to the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the spray device for closed absorption of alkaline gas according to the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the swirl plate of a spray device for closed absorption of alkaline gas according to the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the spray structure of a closed-loop spray device for alkaline gas absorption according to the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the demister of a spray device for closed absorption of alkaline gas according to the present invention.

[0022] In the diagram: 1. Spray tower structure; 101. Tower body structure; 102. Air outlet; 103. Air inlet; 104. Sewage outlet; 105. Liquid level gauge port; 106. Water pump inlet; 2. Water storage area; 3. Filter plate; 4. Air supply pipe; 5. Swirl plate; 501. Swirl blades; 502. Protective coating; 503. Cover; 504. Sealing rotating frame; 6. Spray structure; 601. Fixed ring frame; 602. Adjusting frame; 603. Atomizing nozzle; 604. Connecting hose; 605. External water supply pipe; 7. Demister; 701. Sealing ring frame; 702. Corrugated blades; 703. Protective coating. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] like Figures 1 to 5 As shown, a spray device for closed absorption of alkaline gas includes a spray tower structure 1 and a spray structure 6. The bottom of the spray tower structure 1 has a water storage area 2, and a filter plate 3 is located in the center of the water storage area 2. A gas delivery pipe 4 is connected to the top of the filter plate 3. Two sets of swirl plates 5 are mounted directly above the filter plate 3. The spray structure 6 is mounted directly above the swirl plates 5 and has two sets of swirl plates 5. A demister 7 is mounted directly above the spray structure 6. The spray structure 6 includes a fixed ring frame 601, an adjusting frame 602, an atomizing nozzle 603, a connecting hose 604, and an external water delivery pipe 605. The adjusting frame 602 is installed on the inner diameter surface of the fixed ring frame 601, and the atomizing nozzle 603 is installed at the end of the adjusting frame 602 away from the fixed ring frame 601. The end of the atomizing nozzle 603 away from the output end is connected to the connecting hose 605. 04. The end of the connecting hose 604 away from the atomizing nozzle 603 is connected to an external water supply pipe 605. The adjusting frame 602 is arranged in a ring array structure with the center of the fixed ring frame 601 as the center. The connecting hose 604 adopts a gooseneck tube structure, and the connecting hose 604 and the external water supply pipe 605 are connected to each other through a quick connector structure. The external water supply pipe 605 is located on the outside of the spray tower structure 1. The protective coating 703 and the protective coating 502 are made of the same material. The atomizing nozzle 603 is mounted on the inner wall surface of the fixed ring frame 601 by the adjusting frame 602. The structural mobility of the adjusting frame 602 allows the output end of the atomizing nozzle 603 to have vertical swing adjustment in the direction of orientation and axial rotation adjustment in the horizontal direction.

[0025] like Figures 1 to 5As shown, the spray tower structure 1 includes a tower body structure 101, an air outlet 102, an air inlet 103, a drain outlet 104, a level gauge port 105, and a water pump inlet 106. The air outlet 102 is installed on the top of the tower body structure 101, and an air inlet 103 is provided on one side of the lower end of the tower body structure 101. A drain outlet 104 is provided on the lower end of the tower body structure 101 away from the air outlet 102, and two sets of level gauge ports 105 are provided on the side of the drain outlet 104 away from the air outlet 102. A water pump inlet 106 is provided on the side of the level gauge port 105 away from the drain port 104. The tower structure 101 adopts a three-section structure and is connected and fixed to each other by flange structure. The air outlet 102 is welded to the support of the tower structure 101. One end of the air outlet 102 is connected to the end of the air supply pipe 4 away from the filter plate 3. The side surface of the filter plate 3 is provided with an air outlet structure. The swirl plate 5 includes swirl blades 501, protective coating 502, cover 503 and sealing rotating frame 50. 4. The surface of the swirl blades 501 is coated with a protective coating 502, and the edge of the swirl blades 501 is connected to a shroud 503. A sealing rotating frame 504 is installed on the outside of the shroud 503. The swirl blades 501 are arranged in a ring array structure with the center of the shroud 503 as the center. The swirl blades 501 and the shroud 503 are fixedly connected to each other and can rotate vertically through the sealing rotating frame 504. The demister 7 includes a sealing ring frame 701, corrugated blades 702, and a protective coating 703. Corrugated blades 702 are equidistantly arranged inside the sealing ring frame 701, and the outer surface of the corrugated blades 702 is coated with a protective coating 703. The shroud 503 connected to the swirl blades 501 can ensure that the shroud 503 connected to the swirl blades 501 has sufficient axial rotation under the structural mobility provided by the sealing rotation frame 504. At the same time, it can also avoid unnecessary structural leakage at the connection between the swirl plate 5 and the inner wall of the spray tower structure 1, and prevent the airflow from directly hitting the tower wall and causing mist entrainment.

[0026] In summary, as Figures 1 to 5 As shown, the alkaline gas closed absorption spray device is used by first connecting the spray tower structure 1 to the upstream exhaust equipment through the air inlet 103 on the lower side of the tower structure 101 via a pipeline structure. Then, the water pump inlet 106 on one side of the tower structure 101 is connected to the external water supply equipment via a pipeline. Then, the sewage outlet 104 is connected to the external sewage treatment equipment. After that, the air outlet 102 at the top of the tower structure 101 is connected to the downstream fan and gas treatment equipment via a pipeline. Sufficient water is stored in the water storage area 2. If necessary, a reagent for neutralizing alkaline gas can be mixed in the water.

[0027] When the alkaline gas supplied by the upstream equipment enters the filter plate 3 through the gas supply pipe 4, it will undergo preliminary filtration and purification. Then, it will enter the water body in the water storage area 2 through the opening on the side of the filter plate 3 and come into full contact with the water containing the reagent until it finally leaves the water body due to buoyancy and moves upward into the tower structure 101.

[0028] At this time, the exhaust gas enters the shroud 503 equipped with swirl vanes 501. As the gas spirals upward, the liquid droplets contained inside are driven to rotate by the airflow. The contact between gas and liquid is strengthened by centrifugal force. The liquid droplets in the rotating airflow are thrown to the outside under the action of inertia, and flow into the inner wall of the tower structure 101 and the shroud 503 and drip down. The relatively dry gas flows out from the outlet of the swirl plate 5, thus achieving the purpose of gas-liquid separation.

[0029] As the two sets of swirl plates 5 operate, the airflow returns to the interior of the spray tower structure 1, which is equipped with two sets of spray structures 6. The agent delivery device, which is pre-connected to the external water supply pipe 605 through a pipe, delivers the agent used to treat the alkali in the gas to the connecting hose 604, and then from the connecting hose 604 to the atomizing nozzle 603 installed at one end of the regulating frame 602. Under the operation of the atomizing nozzle 603, the agent is atomized and sprayed out, and fully interacts with the alkaline gas to remove alkali.

[0030] The treated gas, carrying some mist, enters the demister 7 at the top of the spray tower structure 1. When the gas containing mist flows at a certain speed across the surface of the corrugated blades 702 inside the sealing ring frame 701, the mist collides with the corrugated blades 702 due to the inertial impact of the gas. The collected droplets gradually grow larger until their own weight exceeds the resultant force of the gas's upward force and the liquid's surface tension, at which point the droplets are separated from the corrugated blade surface. The multi-directional structure of the corrugated blades 702 increases the chance of mist being captured, and any unremoved mist is captured at the next turn. The gas is captured through the same process, and this repeated action greatly improves the demisting efficiency. As a result, the gas passing through the corrugated blades 702 is basically free of mist. The structure of the corrugated blades 702 allows the gas to be rapidly and continuously changed in direction. Due to centrifugal force and inertia, the mist droplets in the flue gas collide with the corrugated blades 702 and are captured. The mist droplets gather to form a water flow, which falls into the water storage area 2 due to gravity, thus achieving gas-liquid separation. After the flue gas flowing through the corrugated blades 702 meets the demisting requirements, it is discharged to the air outlet 102 and enters the downstream equipment.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A spray device for closed absorption of alkaline gases, comprising a spray tower structure (1) and a spray structure (6), characterized in that: The bottom of the spray tower structure (1) is provided with a water storage area (2), and a filter plate (3) is provided in the middle of the water storage area (2). The top of the filter plate (3) is connected to an air supply pipe (4). Two sets of swirl plates (5) are mounted directly above the filter plate (3). The spray structure (6) is mounted directly above the swirl plates (5) and has two sets of swirl plates. A demister (7) is mounted directly above the spray structure (6). The spray structure (6) includes a fixed ring frame (601) and an adjusting frame (602). 2) Atomizing nozzle (603), connecting hose (604) and external water supply pipe (605). An adjusting bracket (602) is installed on the inner diameter surface of the fixed ring frame (601), and an atomizing nozzle (603) is installed at the end of the adjusting bracket (602) away from the fixed ring frame (601). The end of the atomizing nozzle (603) away from the output end is connected to the connecting hose (604), and the end of the connecting hose (604) away from the atomizing nozzle (603) is connected to the external water supply pipe (605).

2. The spray device for closed absorption of alkaline gas according to claim 1, characterized in that, The spray tower structure (1) includes a tower body structure (101), an air outlet (102), an air inlet (103), a sewage outlet (104), a level gauge port (105), and a water pump inlet (106). The air outlet (102) is installed on the top of the tower body structure (101), and an air inlet (103) is provided on one side of the lower end of the tower body structure (101). A sewage outlet (104) is provided on the lower end of the side of the tower body structure (101) away from the air outlet (102). Two sets of level gauge ports (105) are provided on the side of the sewage outlet (104) away from the air outlet (102). At the same time, a water pump inlet (106) is provided on the side of the level gauge port (105) away from the sewage outlet (104).

3. The spray device for closed absorption of alkaline gas according to claim 2, characterized in that, The tower structure (101) is set in a three-section structure and is connected and fixed to each other by flange structure, and the air outlet (102) is welded to the support of the tower structure (101).

4. The spray device for closed absorption of alkaline gas according to claim 2, characterized in that, One end of the air outlet (102) is connected to the end of the air supply pipe (4) away from the filter plate (3), and the side surface of the filter plate (3) is provided with an air outlet structure.

5. The spray device for closed absorption of alkaline gas according to claim 1, characterized in that, The swirl plate (5) includes swirl blades (501), a protective coating (502), a cover (503), and a sealing rotating frame (504). The surface of the swirl blades (501) is coated with a protective coating (502), and the edge of the swirl blades (501) is connected to the cover (503). The outer side of the cover (503) is connected to the sealing rotating frame (504).

6. The spray device for closed absorption of alkaline gas according to claim 5, characterized in that, The swirl blades (501) are arranged in a ring array with the center of the shroud (503) as the center, and the swirl blades (501) and the shroud (503) are fixedly connected to each other and rotate vertically through the sealed rotating frame (504).

7. The spray device for closed absorption of alkaline gas according to claim 5, characterized in that, The demister (7) includes a sealing ring frame (701), corrugated blades (702) and a protective coating (703). The corrugated blades (702) are equidistantly arranged inside the sealing ring frame (701), and the outer surface of the corrugated blades (702) is coated with a protective coating (703).

8. The spray device for closed absorption of alkaline gas according to claim 7, characterized in that, The adjusting frame (602) is arranged in a ring array structure with the center of the fixed ring frame (601) as the center. The connecting hose (604) adopts a gooseneck tube structure. The connecting hose (604) and the external water supply pipe (605) are connected to each other through a quick connector structure. The external water supply pipe (605) is located on the outside of the spray tower structure (1). The protective coating (703) and the protective coating (502) are made of the same material.

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