A high-efficiency spraying acid and alkali washing tower

Abstract

The present application discloses an acid-base washing tower with high efficiency spraying. The design of the nozzle pointing upward allows the washing liquid sprayed out to spread and spray upward. The washing liquid sprayed out by the nozzle at the bottom will hit the bottom of the mesh plate above, and then be scattered and fall back again. At this time, the scattered and falling washing liquid and the washing liquid sprayed upward will cover the entire space over a large area, so that the washing liquid diffused over a large area can have more contact area with the upward exhaust gas, thereby improving the washing effect. At the same time, when the falling and scattered washing liquid falls on the water distribution pipe and the mesh plate, it will be blocked by the water distribution pipe and the mesh plate and converge to form larger droplets. The droplets formed by the mesh plate at the top will fall downward through the holes on the mesh plate and collide with the washing liquid sprayed upward below, further improving the diffusion of the washing liquid, increasing the gas-liquid contact area, and further improving the washing effect.

Description

Technical Field

[0001] The present application relates to the field of environmental protection technology, and in particular to an acid-base washing tower with high-efficiency spraying. Background Art

[0002] An acid-base scrubber is an industrial device that introduces high-pressure industrial waste gas from the bottom and sprays scrubbing liquid downward through a spray device above to purify the upward-flowing waste gas. During the scrubbing process, in order to increase the gas-liquid contact area, existing scrubbers generally have multiple sets of spray pipes that spray large areas of liquid droplets to contact the upward-flowing waste gas, and a packing layer is set below the spray pipe. Through the porous structure in the packing layer, the scrubbing liquid flows downward in the pores, increasing the contact between the scrubbing liquid and the waste gas and improving the scrubbing effect.

[0003] This method of setting up a large number of spray pipes will increase the total amount of washing liquid sprayed per unit time. However, only a small part of the large amount of washing liquid sprayed will directly contact the exhaust gas and perform effective washing. Most of the sprayed washing liquid does useless work, increasing the cost of industrial production. In addition, the washing liquid sprayed downward by the spray pipe will fall on the packing layer below and will enter the pores of the packing layer and flow downward. Since it is in the form of small droplets, the washing liquid content per unit area in the pores is small, the contact area with the passing exhaust gas is small, and the washing effect is poor. Summary of the Invention

[0004] The present application proposes an acid-base washing tower with high-efficiency spraying, which is equipped with nozzles to spray washing liquid upward. The washing liquid diffuses upward and impacts the mesh plate to break it up. The scattered washing liquid covers a large area of the internal space of the washing tower. The upward exhaust gas contacts and washes with the washing liquid falling over a large area. The falling washing liquid falls on the water distribution pipe and the mesh plate to converge. The converged large droplets fall on the packing layer to form a liquid flow that fills the pores of the packing layer. The upward-impacting washing liquid impacts the impeller to drive the inclined plate to rotate. The washing liquid sprayed by the nozzles at different positions impacts the moving inclined plate to form a reaction force. The reaction force provided by the inclined plate causes the mesh plate and the water distribution pipe to swing continuously. The swinging mesh plate and water distribution pipe will affect the movement state of the washing liquid and the exhaust gas. The advantages of this invention are used to solve the problems of the existing washing towers that a large number of spray nozzles are arranged to spray washing liquid, causing waste, and the dispersed washing liquid falls into the packing layer and cannot form a large liquid flow.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: an acid-base washing tower with high-efficiency spraying, comprising a washing tower, wherein an air inlet and a liquid discharge port are provided at the bottom of the washing tower for inputting waste gas and discharging waste liquid, and a packing layer is provided at the bottom of the inner cavity of the washing tower for increasing the gas-liquid contact area; uniformly distributed support rings are provided on the side walls of the inner cavity of the washing tower, and a mesh plate is provided above the support ring for breaking up and gathering the washing liquid, and a water distribution pipe is provided at the top of the mesh plate for evenly distributing and gathering the washing liquid, and the top of the water distribution pipe is provided with uniformly distributed nozzles for spraying the washing liquid upward.

[0006] Preferably, the water distribution pipe is connected to the washing liquid through a hose, there is a gap between the support ring and the mesh plate, and there is a gap between the outer wall of the mesh plate and the water distribution pipe and the inner wall of the washing tower, which is used to provide space for the mesh plate and the water distribution pipe to move.

[0007] Preferably, springs uniformly distributed circumferentially are provided between the top end of the support ring and the bottom end of the mesh plate to drive the mesh plate and the water distribution pipe to reset.

[0008] Preferably, a central column is provided at the center of the bottom end of the inner cavity of the washing tower, the top end of the central column passes through the center of the mesh plate to the top of the washing tower, and evenly distributed impellers are provided on the central column.

[0009] Preferably, the impeller includes an inner sleeve which is sleeved with the central column on the inner side, blades evenly distributed circumferentially on the outer side of the inner sleeve, and an outer sleeve wrapped around the outer side of the blades, for receiving impact force to rotate.

[0010] Preferably, a limit ring is movably provided at the bottom end of the inner sleeve, and the limit ring is fixedly connected to the center column by bolts to limit the movement of the impeller.

[0011] Preferably, a connecting rod is provided on the outer side wall of the outer sleeve, and an inclined plate is provided at one end of the connecting rod away from the outer sleeve. The inclined plate is arc-shaped in the circumferential direction and is used to provide a reaction force to the water distribution pipe.

[0012] Preferably, the single impeller is located above a single water distribution pipe, and the impeller and the slope plate are both close to the nozzle below, for receiving the power of the concentrated washing liquid sprayed out by the nozzle.

[0013] Preferably, the bottom end of the slope plate is provided with an inclined surface with a changing circumferential direction, which is used to change the direction of movement of the water distribution pipe and the mesh plate.

[0014] The present application provides an efficient spraying acid-base washing tower, which is designed with the nozzle facing upward, so that the sprayed washing liquid can diffuse and spray upward. The washing liquid sprayed by the nozzle at the bottom will hit the bottom of the mesh plate above, and then be broken up and fall back again. At this time, the scattered and fallen washing liquid and the washing liquid sprayed upward will cover the entire space over a large area, so that the washing liquid diffused over a large area can have more contact area with the upward exhaust gas, thereby improving the washing effect.

[0015] At the same time, when the falling and dispersed washing liquid falls on the water distribution pipe and the mesh plate, it will be gathered due to the obstruction of the water distribution pipe and the mesh plate to form larger droplets. The droplets formed by the mesh plate above will fall downward through the holes in the mesh plate, and collide with the washing liquid sprayed upward from below, further improving the diffusion of the washing liquid, increasing the gas-liquid contact area, and further improving the washing effect. The mesh plate at the bottom will gather all the falling washing liquid from above to form larger droplets, which will drip downward onto the packing layer below and gather in the pores of the packing layer to form a liquid flow, so that the exhaust gas passing through the pores of the packing layer can be fully mixed and contacted with the downward liquid flow, further improving the washing effect.

[0016] At the same time, a part of the washing liquid sprayed upward will impact the impeller, causing the impeller to drive the inclined plate to rotate, and the inclined plate is close to the nozzle. At this time, the washing liquid sprayed from the nozzle is relatively concentrated, causing the inclined plate to exert a reaction force on the nozzle through the impacted washing liquid, and the spraying position of the washing liquid impacting upward on the inclined plate is constantly changing, so that the entire water distribution pipe below is in a state of constantly changing reaction force position, and cooperates with the elastic force of the spring to perform continuous multi-angle swing, so that the direction of the washing liquid sprayed from the nozzle is constantly changing, causing the sprayed washing liquid to collide, further improving the scattering effect of the washing liquid, and increasing the probability of collision between the washing liquid and the exhaust gas, thereby improving the washing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments disclosed herein and, together with the description, serve to explain the principles disclosed herein.

[0018] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the three-dimensional appearance of the present invention;

[0020] Figure 2 Schematic diagram of the internal structure distribution of the present invention;

[0021] Figure 3 Schematic diagram of the internal structure of the washing tower of the present invention;

[0022] Figure 4 Schematic diagram of the structural position of the impeller and the slope plate of the present invention.

[0023] Among them: 1. Scrubber; 2. Air inlet; 3. Drain port; 4. Packing layer; 5. Support ring; 6. Mesh plate; 7. Spring; 8. Water distribution pipe; 9. Nozzle; 10. Center column; 11. Limiting ring; 12. Inner sleeve; 13. Outer sleeve; 14. Blade; 15. Connecting rod; 16. Inclined plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application. Example 1

[0025] See also Figures 1 to 3 , an acid-base washing tower with high efficiency spraying, comprising a washing tower 1, an air inlet 2 and a liquid discharge port 3 are fixed by bolts at the bottom of the washing tower 1, a packing layer 4 is fixedly connected to the bottom of the inner cavity of the washing tower 1, and the packing layer 4 is above the air inlet 2 and the liquid discharge port 3, so that the high-pressure exhaust gas can enter the washing tower 1 through the air inlet 2, and then pass upward through the pores of the packing layer 4 and the washing liquid in the packing layer 4 to be washed, and the waste liquid falling through the packing layer 4 can be discharged through the liquid discharge port 3, and an axially uniformly distributed support ring 5 is fixedly connected to the side wall of the inner cavity of the washing tower 1, and a mesh plate 6 is arranged above the support ring 5, and a water distribution pipe 8 is fixedly connected to the top of the mesh plate 6, and the water distribution pipe 8 consists of multiple concentric The circular tubes are connected to make the arrangement of the nozzles 9 more uniform, the washing liquid is sprayed more evenly, and the coverage is more comprehensive. The water distribution pipe 8 is connected to the washing liquid through a hose, so that the water distribution pipe 8 can be movable. The top of the water distribution pipe 8 is fixedly connected with a uniformly distributed nozzle 9. The upward design of the nozzle 9 allows the sprayed washing liquid to diffuse and spray upward. The washing liquid sprayed by the nozzle 9 below will hit the bottom of the upper mesh plate 6, and then be broken up and fall back again. At this time, the scattered and falling washing liquid and the upwardly sprayed washing liquid will cover the entire space over a large area, so that the washing liquid diffused over a large area can have more contact area with the upward exhaust gas, thereby improving the washing effect.

[0026] At the same time, when the falling and dispersed washing liquid falls on the water distribution pipe 8 and the mesh plate 6, it will be gathered due to the obstruction of the water distribution pipe 8 and the mesh plate 6 to form larger droplets. The droplets formed by the mesh plate 6 above will fall downward through the holes on the mesh plate 6, and have a counter-impact with the washing liquid sprayed upward below, further improving the diffusion of the washing liquid, increasing the gas-liquid contact area, and further improving the washing effect. The mesh plate 6 at the bottom will gather all the falling washing liquid above to form larger droplets, which will drip downward onto the packing layer 4 below and gather in the pores of the packing layer 4 to form a liquid flow, so that the exhaust gas passing through the pores of the packing layer 4 can be fully mixed and contacted with the downward liquid flow, further improving the washing effect. Example 2

[0027] See also Figures 2 to 4 On the basis of Example 1, there is a gap between the support ring 5 and the mesh plate 6, and there is a gap between the outer wall of the mesh plate 6 and the water distribution pipe 8 and the inner wall of the washing tower 1, which provides sufficient space for the movement of the mesh plate 6 and the water distribution pipe 8. The top of the support ring 5 is provided with a circumferentially uniformly distributed spring 7, and the top of the spring 7 is fixedly connected to the bottom end of the mesh plate 6, so that the mesh plate 6 and the water distribution pipe 8 can squeeze or pull the spring 7 during the movement, so that the spring 7 stores energy and reacts to the mesh plate 6 and the water distribution pipe 8 to perform a reset movement.

[0028] See Figures 2 to 4 A center column 10 is welded at the center of the bottom end of the inner cavity of the washing tower 1, and the top of the center column 10 passes through the center of the mesh plate 6 to the top of the washing tower 1. A uniformly distributed impeller is movably sleeved on the center column 10, and the impeller includes an inner sleeve 12 movably sleeved with the center column 10 on the inner side, blades 14 circumferentially uniformly distributed on the outer side of the inner sleeve 12, and an outer sleeve 13 wrapped around the outer side of the blades 14. A limit ring 11 is movably provided at the bottom end and the bottom end of the inner sleeve 12. The limit ring 11 is fixedly connected to the center column 10 by bolts, so that the limit ring 11 limits the position of the impeller so that the impeller can only rotate. A single impeller is located above a single water distribution pipe 8, so that a part of the washing liquid sprayed upward will impact the blades 14, driving the entire impeller to rotate.

[0029] See Figure 2 , Figure 4, a connecting rod 15 is welded on the outer wall of the outer sleeve 13, and the end of the connecting rod 15 away from the outer sleeve 13 is fixedly connected to the inclined plate 16, which is arc-shaped in the circumferential direction. The impeller and the inclined plate 16 are close to the nozzle 9 below, so that the impeller drives the inclined plate 16 to rotate, and the inclined plate 16 is close to the nozzle 9. At this time, the washing liquid sprayed by the nozzle 9 is relatively concentrated, causing the inclined plate 16 to exert a reaction force on the nozzle 9 through the impact of the washing liquid, and the spraying position of the washing liquid impacting upward on the inclined plate 16 is constantly changing, so that the entire water distribution pipe 8 below is constantly changing in the state of the reaction force position, and cooperates with the elastic force of the spring 7 to perform continuous multi-angle swing, so that the direction of the washing liquid sprayed from the nozzle 9 is constantly changing, affecting the surrounding airflow, changing the movement direction and speed of the airflow, causing the sprayed washing liquid to collide, further improving the scattering effect of the washing liquid, and increasing the probability of collision between the washing liquid and the exhaust gas, thereby improving the washing effect. Example 3

[0030] See also Figure 2 , Figure 4 On the basis of the second embodiment, the bottom end of the slope plate 16 is provided with an inclined surface that changes in the circumferential direction, so that the positions of the circumferentially adjacent nozzles 9 on the slope plate 16 also have different height differences, thereby making the reaction forces of these nozzles 9 in the circumferential direction also have differences, thereby making the swinging of the water distribution pipe 8 and the mesh plate 6 more complicated.

Claims

1. A high-efficiency spraying acid-base washing tower, characterized in that: The invention comprises a washing tower (1), wherein the bottom of the washing tower (1) is provided with an air inlet (2) and a liquid discharge port (3), the air inlet is used to input waste gas, and the liquid discharge port is used to discharge waste liquid, and the bottom of the inner cavity of the washing tower (1) is provided with a packing layer (4) for increasing the gas-liquid contact area; The inner cavity side wall of the washing tower (1) is provided with uniformly distributed support rings (5), and a mesh plate (6) is provided above the support ring (5) for breaking up and gathering the washing liquid. The top of the mesh plate (6) is provided with a water distribution pipe (8) for uniformly distributing and gathering the washing liquid. The top of the water distribution pipe (8) is provided with uniformly distributed nozzles (9) for spraying the washing liquid upwards. A central column (10) is provided at the center of the bottom end of the inner cavity of the washing tower (1), and the top end of the central column (10) passes through the center of the mesh plate (6) to the top of the washing tower (1), and a uniformly distributed impeller is movably sleeved on the central column (10); the impeller comprises an inner sleeve (12) sleeved with the central column (10) on the inner side, blades (14) uniformly distributed circumferentially on the outer side of the inner sleeve (12), and an outer sleeve (13) wrapped around the outer side of the blades (14), and is used to receive impact force for rotation; a connecting rod (15) is provided on the outer wall of the outer sleeve (13), and a slope plate (16) is provided at one end of the connecting rod (15) away from the outer sleeve (13), and the slope plate (16) is arc-shaped in the circumferential direction and is used to provide a reaction force to the water distribution pipe (8); the bottom end of the slope plate (16) is provided with an inclined surface that changes in the circumferential direction, and is used to change the direction of movement of the water distribution pipe (8) and the mesh plate (6).

2. The high-efficiency spraying acid-base washing tower according to claim 1, characterized in that: The water distribution pipe (8) is connected to the washing liquid through a hose, and there is a gap between the support ring (5) and the mesh plate (6). There is a gap between the outer wall of the mesh plate (6) and the water distribution pipe (8) and the inner wall of the washing tower (1), which is used to provide space for the mesh plate (6) and the water distribution pipe (8) to move.

3. The high-efficiency spraying acid-base washing tower according to claim 2, characterized in that: A circumferentially evenly distributed spring (7) is provided between the top end of the support ring (5) and the bottom end of the mesh plate (6) for driving the mesh plate (6) and the water distribution pipe (8) to reset.

4. The high-efficiency spraying acid-base washing tower according to claim 3, characterized in that: Limiting rings (11) are movably provided at the top and bottom ends of the inner sleeve (12), and the limiting rings (11) are fixedly connected to the center column (10) by bolts and are used to limit the movement of the impeller.

5. The high-efficiency spraying acid-base washing tower according to claim 4, characterized in that: The single impeller is located above a single water distribution pipe (8), and the impeller and the slope plate (16) are both close to the nozzle (9) below, for receiving the power of the nozzle (9) to spray out the concentrated washing liquid.

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