Spray tower for waste gas treatment

Abstract

The utility model relates to a spray tower for waste gas treatment, which relates to the technical field of spray towers, and comprises a rack and a tower body, a packing support plate is arranged in the tower body, a spray component is arranged on the rack, the packing support plate comprises a bottom plate and a layer plate, the bottom plate is fixedly arranged in the tower body, the layer plate is arranged on the bottom plate and is positioned above the bottom plate, a filling cavity is arranged between the layer plate and the bottom plate, and the spray component is arranged on the spray component. Filling openings are formed in the laminates, sealing plates for sealing the filling openings are arranged on the laminates, then the sealing plates are opened, the filler is poured into the filling cavities through the filling openings, after filling is completed, the sealing plates are closed, then the filler continues to be placed on the laminates, and the whole pile of filler is divided into an upper part and a lower part through the laminates; the upper-layer filler is supported by the layer plate and the sealing plate, so that the extrusion of the upper-layer filler on the lower-layer filler can be effectively reduced, and the spraying filler layer is more uniform in the vertical direction, so that the mass transfer efficiency is higher in the upward flowing process of gas and the downward flowing process of liquid, and the waste gas treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray towers, in particular to a spray tower for waste gas treatment. Background Art

[0002] A spray tower is a common device in waste gas treatment. A tray for placing packing is provided in the spray tower. Gas enters the tower from the bottom and runs upward through the pores of the packing. Spray pipes are distributed in the spray tower, and the absorption liquid is sprayed out through the spray pipes. The gas reacts chemically with the absorption liquid sprayed onto the packing, and the pollutants fall to the lower part of the spray tower along with the absorption liquid, while the treated gas is discharged through the gas outlet at the top of the tower.

[0003] The packing is filled or replaced through a maintenance opening provided on the outer wall of the spray tower. The operator loads the packing onto the tray through the maintenance opening. When loading, the lower part of the packing layer is more tightly packed than the upper part due to the gravity of the upper layer of packing, resulting in uneven packing in the packing layer, increasing the resistance to the upward flow of gas and the downward flow of the spray liquid, leading to a decrease in the gas-liquid mass transfer efficiency and thus a decrease in the waste gas treatment efficiency. Summary of the Utility Model

[0004] In order to improve the efficiency of waste gas treatment, the utility model provides a spray tower for waste gas treatment.

[0005] The spray tower for waste gas treatment provided by this application adopts the following technical solutions:

[0006] A spray tower for waste gas treatment includes a frame and a tower body provided on the frame. A packing tray is provided inside the tower body. A spray assembly connected to the inside of the tower body is provided on the frame. The packing tray includes a bottom plate and a layer plate. The bottom plate is fixedly provided inside the tower body. The layer plate is provided on the bottom plate and above the bottom plate. A filling cavity is formed between the layer plate and the bottom plate. The layer plate is provided with a filling port, and the filling port communicates with the filling cavity. A sealing plate for closing the filling port is provided on the layer plate. The bottom plate, the layer plate and the sealing plate are all porous structures. The tower body is provided with a plurality of packing ports corresponding to the packing tray. The packing ports are located above the corresponding sealing plates and are provided with sealing doors.

[0007] By adopting the above technical solutions, open the sealing door, then open the sealing plate, pour the packing into the filling cavity through the filling port. After the filling cavity is filled, close the sealing plate, and then continue to place the packing on the layer plate, separating the whole stack of packing into upper and lower parts by the layer plate. The upper layer of packing can be effectively supported by the layer plate and the sealing plate, reducing the extrusion of the upper layer of packing on the lower layer of packing, making the spray packing layer more uniform in the vertical direction, and thus having a higher mass transfer efficiency during the upward flow of gas and the downward flow of liquid, thereby improving the waste gas treatment efficiency.

[0008] Optionally, the sealing plate is rotatably disposed on a layer plate, and a limiting component for limiting the sealing plate is provided on the layer plate.

[0009] By adopting the above technical solution, the sealing plate is rotated to open the filling port, and then filler can be added to the filling cavity or the filler in the filling cavity can be taken out through the filling port. After filling, the sealing plate is rotated back to the initial position, and then filler is continued to be added directly above the sealing plate and the layer plate. When the filling port is open or closed, the limiting component limits the sealing plate to improve the convenience of filling the filler.

[0010] Optionally, the limiting component includes:

[0011] A limiting rod, the limiting rod is rotatably arranged at the filling port, a limiting groove is provided on the lower surface of the sealing plate, and when the filling port is in an open state, the limiting rod is inserted into the limiting groove to limit the sealing plate;

[0012] A limit block is arranged at the filling port, and when the filling port is in a closed state, the sealing plate abuts against an upper surface of the limit block.

[0013] By adopting the above technical solution, the sealing plate is rotated away from the limit block, and then the limit rod is rotated so that the top end of the limit rod is inserted into the limit groove. At this time, the sealing plate remains in an inclined state under the support of the limit rod and its own gravity, and the filling port is opened. The operator can load and unload the filler through the filling port. After the filler is loaded and unloaded, the sealing plate is rotated to make the limit rod disengage from the limit groove, and the limit rod is rotated to move back to the initial position. The sealing plate is rotated to contact the limit block. At this time, the sealing plate cover is arranged on the filling port, so that the filling port is in a closed state, and then the filler can continue to be added to the sealing plate and the layer plate. By limiting the sealing plate, the obstruction of the sealing plate to the operator during loading and unloading of the filler is reduced, thereby improving the convenience of loading and unloading of the filler.

[0014] Optionally, two filler support plates are provided, and the two filler support plates are vertically spaced apart and arranged in the tower body.

[0015] By adopting the above technical solution, the two filling support plates work simultaneously, and the exhaust gas passes through the two filling support plates continuously, thereby improving the efficiency of exhaust gas treatment.

[0016] Optionally, an air inlet pipe is provided on the outer wall of the tower body, the air inlet pipe extends into the tower body and is located below the bottom plate, a demister is provided in the tower body, the demister is located above the packing support plate, and an air outlet is provided on the tower body, the air outlet is located above the demister.

[0017] By adopting the above technical solution, the waste gas enters the tower body through the intake pipe, then successively passes through two packing trays. The spraying assembly sprays the absorption liquid into the tower. The gas undergoes a chemical reaction with the absorption liquid sprayed onto the packing. The pollutants fall to the lower part of the spray tower along with the absorption liquid, while the treated gas passes through the demister and is discharged through the air outlet at the top of the tower, thereby realizing the treatment of the waste gas. Through the cooperation of the packing tray and the demister, the effect of waste gas treatment is improved.

[0018] Optionally, the spraying assembly includes:

[0019] A water tank, which is arranged on the frame and contains the absorption liquid;

[0020] A water pump, which is arranged on the water tank and its suction end is connected to the inside of the water tank through a water inlet pipe. The output end of the water pump is provided with a water delivery pipe;

[0021] Two shunt pipes, which are vertically spaced on the water delivery pipe and correspond to the packing trays one by one. The shunt pipes extend into the tower body and are located above the corresponding laminates. A plurality of spray pipes are arranged on the shunt pipes, and spray nozzles are arranged on the spray pipes.

[0022] By adopting the above technical solution, when the water pump starts, the absorption liquid is sprayed out from the spray nozzles after passing through the water inlet pipe, the water delivery pipe, the shunt pipes and the spray pipes. The spray nozzles located above the corresponding packing trays spray the absorption liquid onto the packing. The waste gas reacts with the absorption liquid, and the pollutants fall to the lower part of the spray tower along with the absorption liquid. The unreacted waste gas continues to rise and reacts with the sprayed absorption liquid at the second packing tray, thereby improving the efficiency of waste gas treatment.

[0023] Optionally, a check valve is arranged on the shunt pipe.

[0024] By adopting the above technical solution, the absorption liquid that has not been sprayed out in the spray pipe may have come into contact with the waste gas. Therefore, the check valve reduces the probability of the waste gas entering the water tank through the shunt pipe and polluting the absorption liquid.

[0025] Optionally, a drain pipe communicating with the inside of the tower body is arranged on the outer side wall at the bottom end of the tower body, and an overflow pipe is also arranged on the tower body. The overflow pipe is located between the drain pipe and the intake pipe.

[0026] By adopting the above technical solution, the waste gas reacts with the absorption liquid, and the pollutants fall to the lower part of the spray tower along with the absorption liquid. The waste liquid can be discharged through the drain pipe. When the treatment volume suddenly increases and the liquid level of the waste liquid in the tower body rises, and the drainage speed of the drain pipe is insufficient, the overflow pipe is opened. When the liquid level exceeds the overflow pipe, the overflow pipe and the drain pipe drain water together, thereby reducing the probability of the waste liquid flowing into the intake pipe and causing the intake efficiency of the intake pipe to decrease.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Open the sealed door, then open the sealing plate, pour the packing through the filling port into the filling cavity. After the filling cavity is filled, close the sealing plate. Then continue to place the packing on the laminar plate, and divide the whole pile of packing into upper and lower parts by the laminar plate. The upper packing is supported by the laminar plate and the sealing plate, which can effectively reduce the extrusion of the upper packing on the lower packing, making the spray packing layer more uniform in the vertical direction. Thus, during the process of upward gas flow and downward liquid flow, the mass transfer efficiency is higher, thereby improving the treatment efficiency of waste gas.

[0029] 2. Rotate the sealing plate away from the limit block, then rotate the limit rod so that the top of the limit rod is inserted into the limit slot. At this time, the sealing plate maintains an inclined state under the support of the limit rod and its own gravity, and the filling port is opened. The operator can load and unload the packing through the filling port. After the packing is loaded and unloaded, rotate the sealing plate so that the limit rod disengages from the limit slot, rotate the limit rod back to the initial position, and rotate the sealing plate to abut against the limit block. At this time, the sealing plate covers the filling port, making the filling port in a closed state. Then, the packing can be continuously added on the sealing plate and the laminar plate. By limiting the sealing plate, the obstruction of the sealing plate to the operator during the loading and unloading of the packing is reduced, thereby improving the convenience of packing loading and unloading. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the present application;

[0031] Figure 2 is the sectional view of the tower body in the present application;

[0032] Figure 3 is the structural schematic diagram of the packing support plate in the present application;

[0033] Figure 4 is the position schematic diagram of the sealing plate when the filling port is in a closed state in the present application.

[0034] Reference Numerals: 1, frame; 2, tower body; 21, packing port; 22, manhole; 23, intake pipe; 24, demister; 25, outlet; 26, drain pipe; 27, overflow pipe; 3, packing support plate; 31, bottom plate; 311, support rod; 32, laminar plate; 321, filling cavity; 322, filling port; 33, sealing plate; 331, limit slot; 34, rotating rod; 4, spray assembly; 41, water tank; 42, water pump; 43, shunt pipe; 431, check valve; 44, water delivery pipe; 45, spray pipe; 451, nozzle; 5, limit assembly; 51, limit rod; 52, limit block. Detailed Embodiments

[0035] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 drawings.

[0036] An embodiment of the present application discloses a spray tower for waste gas treatment.

[0037] Referring to Figure 1 and Figure 2 , a spray tower for waste gas treatment includes a frame 1 and a tower body 2 provided on the frame 1. A packing support plate 3 is provided inside the tower body 2, and a spray assembly 4 connected to the inside of the tower body 2 is provided on the frame 1.

[0038] Referring to Figure 1 and Figure 2 , there are two packing support plates 3, and the two packing support plates 3 are vertically spaced inside the tower body 2. In other embodiments, multiple packing support plates 3 can be provided according to requirements. Hereinafter, a single packing support plate 3 is taken as an example for illustration.

[0039] Referring to Figure 2 and Figure 3 , the packing support plate 3 includes a bottom plate 31 and a layer plate 32. The bottom plate 31 is coaxially fixed inside the tower body 2. Multiple support rods 311 extending vertically upward are provided at the edge of the bottom plate 31. The layer plate 32 is fixed at the top ends of the multiple support rods 311 and is located above the bottom plate 31. The layer plate 32 coincides with the axis of the bottom plate 31, and the edge of the layer plate 32 is connected to the inner wall of the tower body 2. A filling cavity 321 is formed between the layer plate 32 and the bottom plate 31. A vertical filling port 322 is formed on the layer plate 32, and the filling port 322 communicates with the filling cavity 321. A sealing plate 33 for closing the filling port 322 is further provided on the layer plate 32. The bottom plate 31, the layer plate 32, and the sealing plate 33 are all porous structures.

[0040] Referring to Figure 2 , Figure 3 and Figure 4 , the sealing plate 33 is rotatably provided on the layer plate 32 and is used to close the filling port 322. A limiting assembly 5 for limiting the sealing plate 33 is provided on the layer plate 32. The limiting assembly 5 includes a limiting rod 51 and a limiting block 52. A rotating rod 34 extending horizontally is fixed on the inner wall of the filling port 322. The rotating rod 34 is located below the sealing plate 33. The limiting rod 51 is rotatably provided on the rotating rod 34, and the rotating direction of the limiting rod 51 is opposite to that of the sealing plate 33. In the initial state, the end of the limiting rod 51 away from the rotating rod 34 abuts against the inner bottom wall of the filling cavity 321.

[0041] Referring to Figure 2 , Figure 3 and Figure 4, a limiting groove 331 is provided on the lower surface of the sealing plate 33. When the filling port 322 is in an open state, the limiting rod 51 is inserted into the limiting groove 331 to limit the sealing plate 33; a limiting block 52 is fixedly provided on the inner wall of the filling port 322, and the limiting block 52 is arranged opposite to the rotating end of the sealing plate 33. When the filling port 322 is in a closed state, the sealing plate 33 abuts against the upper surface of the limiting block 52.

[0042] Referring to Figure 1 and Figure 2 , a plurality of packing ports 21 corresponding to the packing trays 3 are provided on the outer side wall of the tower body 2. The packing ports 21 are located above the corresponding sealing plates 33 and are provided with sealing doors. A manhole 22 is also provided on the outer side wall of the tower body 2. The packing ports 21 have the same structure as the manhole 22 and the same structure as the manhole 22 in the prior art, so no further description will be given here.

[0043] Referring to Figure 2 , Figure 3 and Figure 4 , in the initial state, the filling port 322 is in a closed state, the sealing plate 33 covers the filling port 322, and one end of the sealing plate 33 abuts against the limiting block 52. At the same time, the limiting rod 51 is located below the sealing plate 33. When the packing needs to be loaded or unloaded, first rotate the sealing plate 33 away from the limiting block 52, then continue to rotate the sealing plate 33, and at the same time rotate the limiting rod 51 so that the limiting rod 51 is inserted into the limiting groove 331. At this time, under the supporting action of the limiting rod 51, the sealing plate 33 is in an inclined state, and the filling port 322 is in an open state. The operator can fill the packing through the filling port 322. After the packing in the filling cavity 321 is filled, rotate the sealing plate 33 and at the same time rotate the limiting rod 51 out of the limiting groove 331. At this time, due to the filling of the packing, the limiting rod 51 directly abuts against the packing in the filling cavity 321 or abuts against the bottom wall of the filling cavity 321. Then rotate the sealing plate 33 to close the filling port 322 so that the lower surface of the sealing plate 33 abuts against the upper surface of the limiting block 52. Then load the packing on the sealing plate 33 and the laminar plate 32. Under the action of the gravity of the packing and the support of the limiting block 52, the sealing plate 33 remains horizontal. Reverse operation can complete the unloading of the packing.

[0044] Referring to Figure 1 , Figure 2 and Figure 3 , an air inlet pipe 23 is provided on the outer side wall of the tower body 2. The air inlet pipe 23 extends into the tower body 2 and is located below the bottom plate 31. A demister 24 is provided in the tower body 2. The demister 24 is located above the packing tray 3. An air outlet 25 is provided on the tower body 2. The air outlet 25 is located above the demister 24. The structure and working principle of the demister 24 are the same as those in the prior art, so no further description will be given here.

[0045] Referring to Figure 1 , Figure 2 andFigure 3 The spray assembly 4 includes a water tank 41, a water pump 42 and a shunt pipe 43. The water tank 41 is fixedly arranged on the frame 1 and contains absorption liquid inside. The water pump 42 is arranged above the water tank 41. The suction end of the water pump 42 is connected to the inside of the water tank 41 through a water inlet pipe. The output end of the water pump 42 is provided with a water delivery pipe 44. There are two shunt pipes 43 which are arranged vertically at intervals on the water delivery pipe 44 and correspond to the packing trays 3 one by one. One end of the shunt pipe 43 far away from the water delivery pipe 44 horizontally extends into the tower body 2 and is located above the corresponding layer plate 32. A check valve 431 is arranged on the shunt pipe 43. A plurality of spray pipes 45 are arranged at intervals on the part of the shunt pipe 43 located inside the tower body 2. A plurality of nozzles 451 are arranged on the spray pipes 45, and the spray outlets of the nozzles 451 face downward.

[0046] Refer to Figure 1 and Figure 2 On the outer side wall of the bottom end of the tower body 2, a drain pipe 26 communicating with the inside of the tower body 2 is provided, and a drain valve is arranged on the drain pipe 26. An overflow pipe 27 is also arranged on the tower body 2, and the overflow pipe 27 is located between the drain pipe 26 and the air inlet pipe 23.

[0047] Refer to Figure 2 、 Figure 3 and Figure 4 Open the sealing door, and then open the sealing plate 33. Pour the packing into the filling cavity 321 through the filling port 322. After the filling cavity 321 is filled, close the sealing plate 33. Then continue to place the packing on the layer plate 32. The whole stack of packing is separated into upper and lower parts by the layer plate 32. The upper packing is supported by the layer plate 32 and the sealing plate 33, which can effectively reduce the extrusion of the upper packing on the lower packing, make the spray packing layer more uniform in the vertical direction, so that during the process of gas flowing upward and liquid flowing downward, the mass transfer efficiency is higher, thereby improving the treatment efficiency of the waste gas.

[0048] Refer to Figure 2 、 Figure 3 and Figure 4 The waste gas enters the tower body 2 through the air inlet pipe 23. The absorption liquid is pumped into the tower body 2 by the action of the water pump 42. The absorption liquid sprays out from the nozzles 451 of the spray pipes 45. The waste gas gradually rises and passes through the first packing tray 3. The gas undergoes a chemical reaction with the absorption liquid sprayed on the packing. The pollutants fall to the lower part of the spray tower along with the absorption liquid. The unreacted gas rises and reacts with the absorption liquid at the second packing tray 3. The treated gas rises and passes through the demister 24 to remove the mist and then is discharged through the air outlet 25 at the top of the tower, thereby realizing the treatment of the waste gas.

[0049] The working principle of the embodiment of the present application is as follows:

[0050] Open the sealed door, then open the sealing plate 33, pour the packing material into the filling cavity 321 through the filling port 322. After the filling cavity 321 is filled, close the sealing plate 33, and then continue to place the packing material on the laminar plate 32. After the filling is completed, close the sealed door. Pump the absorption liquid into the tower body 2 through the water pump 42 and spray it out through the spray head 451. The waste gas enters the tower body 2 through the inlet pipe 23. The waste gas gradually rises and passes through the first packing support plate 3. The gas undergoes a chemical reaction with the absorption liquid sprayed onto the packing material. The pollutants fall to the lower part of the spray tower along with the absorption liquid. The unreacted gas rises and reacts with the absorption liquid at the second packing support plate 3. The treated gas rises and passes through the demister 24 for demisting and then is discharged through the gas outlet 25 at the top of the tower, thereby realizing the treatment of the waste gas.

[0051] The whole stack of packing material is separated into upper and lower parts by the laminar plate 32. The upper packing material is supported by the laminar plate 32 and the sealing plate 33, which can effectively reduce the extrusion of the upper packing material on the lower packing material, making the spray packing layer more uniform in the vertical direction. Thus, during the process of the gas flowing upward and the liquid flowing downward, the mass transfer efficiency is higher, thereby improving the treatment efficiency of the waste gas.

[0052] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A spray tower for waste gas treatment, characterized in that: The invention comprises a frame (1) and a tower body (2) arranged on the frame (1), wherein a filling support plate (3) is arranged in the tower body (2), and a spray assembly (4) connected to the tower body (2) is arranged on the frame (1), wherein the filling support plate (3) comprises a bottom plate (31) and a layer plate (32), wherein the bottom plate (31) is fixed in the tower body (2), and the layer plate (32) is arranged on the bottom plate (31) and is located above the bottom plate (31), and a filling cavity (321) is provided between the layer plate (32) and the bottom plate (31). ), the layer plate (32) is provided with a filling port (322), the filling port (322) is communicated with a filling cavity (321), the layer plate (32) is provided with a sealing plate (33) for sealing the filling port (322), the bottom plate (31), the layer plate (32) and the sealing plate (33) are all porous structures, the tower body (2) is provided with a plurality of filling ports (21) corresponding to the filling support plate (3), the filling ports (21) are located above the corresponding sealing plates (33) and have sealing doors.

2. The waste gas treatment spray tower according to claim 1, characterized in that: The sealing plate (33) is rotatably mounted on the layer plate (32), and a limiting component (5) for limiting the position of the sealing plate (33) is provided on the layer plate (32).

3. The spray tower for waste gas treatment according to claim 2, characterized in that: The limiting component (5) comprises: a limiting rod (51), the limiting rod (51) being rotatably disposed at the filling port (322), the lower surface of the sealing plate (33) being provided with a limiting groove (331), and when the filling port (322) is in an open state, the limiting rod (51) is inserted into the limiting groove (331) to limit the sealing plate (33); A limit block (52), wherein the limit block (52) is arranged at the filling port (322), and when the filling port (322) is in a closed state, the sealing plate (33) abuts against the upper surface of the limit block (52).

4. The waste gas treatment spray tower according to claim 1, characterized in that: Two filler support plates (3) are provided, and the two filler support plates (3) are arranged vertically at intervals in the tower body (2).

5. The spray tower for waste gas treatment according to claim 4, characterized in that: An air inlet pipe (23) is provided on the outer wall of the tower body (2), the air inlet pipe (23) extends into the tower body (2) and is located below the bottom plate (31), a demister (24) is provided in the tower body (2), the demister (24) is located above the packing support plate (3), and an air outlet (25) is provided on the tower body (2), the air outlet (25) is located above the demister (24).

6. The waste gas treatment spray tower according to claim 5, characterized in that: The spray assembly (4) comprises: A water tank (41), wherein the water tank (41) is disposed on the frame (1) and contains absorption liquid; A water pump (42), wherein the water pump (42) is arranged on the water tank (41) and the suction end is connected to the water tank (41) through a water inlet pipe, and the output end of the water pump (42) is provided with a water delivery pipe (44); A shunt pipe (43), two of which are arranged vertically at intervals on the water delivery pipe (44) and correspond one to one with the filler support plate (3), the shunt pipe (43) extending into the tower body (2) and located above the corresponding layer plate (32), a plurality of spray pipes (45) being arranged on the shunt pipe (43), and a spray head (451) being arranged on the spray pipe (45).

7. The waste gas treatment spray tower according to claim 6, characterized in that: The diverter pipe (43) is provided with a check valve (431).

8. The waste gas treatment spray tower according to claim 5, characterized in that: A drainage pipe (26) communicating with the interior of the tower body (2) is provided on the outer side wall of the bottom end of the tower body (2), and an overflow pipe (27) is also provided on the tower body (2), wherein the overflow pipe (27) is located between the drainage pipe (26) and the air inlet pipe (23).

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