Dilute sulfuric acid dechlorination device

Abstract

The utility model relates to a dilute sulphuric acid dechlorination device, and relates to the technical field of removal of chlorine in dilute sulphuric acid, the dilute sulphuric acid dechlorination device comprises a dechlorination tower, the bottom of the dechlorination tower is communicated with a liquid outlet pipe, the side close to the top of the dechlorination tower is communicated with a liquid return pipe, one end, located in the dechlorination tower, of the liquid return pipe is communicated with a spray pipe, and the spray pipe is provided with a plurality of downward spray heads; one end of the heating mechanism is communicated with the liquid outlet pipe, the other end of the heating mechanism is communicated with the liquid return pipe, and the heating mechanism is used for heating the dilute sulfuric acid solution entering the liquid outlet pipe; the uniform distribution mechanism is rotationally mounted in the dechlorination tower, is positioned below the spray pipe and is used for being in contact with the dilute sulfuric acid solution sprayed by the spray head; the driving mechanism is mounted in the dechlorination tower and is used for driving the uniform distribution mechanism to rotate; the gas blowing mechanism is mounted on one side, far away from the driving mechanism, of the dechlorination tower and is used for obliquely blowing compressed gas towards the uniform distribution mechanism from bottom to top; and the gas outlet pipe is communicated with the top of the dechlorination tower and is communicated with the gas storage chamber. Compared with the prior art, the dechlorination effect of the dechlorination tower can be improved.

Description

Technical Field

[0001] This utility model relates to the field of chlorine removal technology in dilute sulfuric acid, and more specifically, to a dilute sulfuric acid dechlorination device. Background Technology

[0002] Currently, dilute sulfuric acid dechlorination is a chemical treatment process designed to remove free chlorine from dilute sulfuric acid. This process is of great importance in many industrial sectors, especially in chlor-alkali production, where chlorine gas treatment is involved. If free chlorine in dilute sulfuric acid is not removed, it may affect subsequent process steps and even damage equipment and products. Therefore, dilute sulfuric acid dechlorination utilizes specific equipment and technologies to effectively remove free chlorine from dilute sulfuric acid, ensuring the safety and efficiency of subsequent use.

[0003] Regarding the existing technologies mentioned above, the inventors believe that while air blowing is commonly used to remove chlorine from dilute sulfuric acid, this method often suffers from poor dechlorination efficiency and requires further improvement. Utility Model Content

[0004] To improve the problem of poor dechlorination effect, this application provides a dilute sulfuric acid dechlorination device.

[0005] The dilute sulfuric acid dechlorination device provided in this application adopts the following technical solution:

[0006] A dilute sulfuric acid dechlorination device includes: a dechlorination tower, wherein a liquid outlet pipe is connected to the bottom of the dechlorination tower and a liquid return pipe is connected to the top side of the dechlorination tower, and one end of the liquid return pipe located inside the dechlorination tower is connected to a spray pipe having multiple downward-facing nozzles; a heating mechanism, one end of which is connected to the liquid outlet pipe and the other end of which is connected to the liquid return pipe, the heating mechanism being used to heat the dilute sulfuric acid solution entering the liquid outlet pipe; a uniform distribution mechanism, rotatably installed inside the dechlorination tower and located below the spray pipe, for contacting the dilute sulfuric acid solution sprayed by the nozzles; a driving mechanism, installed inside the dechlorination tower, for driving the uniform distribution mechanism to rotate; a blowing mechanism, installed on the side of the dechlorination tower away from the driving mechanism, for blowing compressed gas obliquely upward toward the uniform distribution mechanism; and a gas outlet pipe, connected to the top of the dechlorination tower and communicating with a gas storage chamber.

[0007] Preferably, the uniform distribution mechanism includes an inclined rod, a rotating column, and rotating blades. The highest end of the inclined rod is connected to the inner wall of the dechlorination tower, and the lowest end of the inclined rod extends obliquely to the middle of the dechlorination tower. The rotating column is vertically rotatably located at the lowest end of the inclined rod, and multiple rotating blades are arranged around the circumference of the rotating column.

[0008] Preferably, the cross-sectional shape of the inclined rod is triangular, and the tip of the inclined rod points vertically upward.

[0009] Preferably, the heating mechanism includes a heating box, a storage battery, and heating wires. One end of the heating box is connected to the liquid outlet pipe, and the other end is connected to the liquid return pipe. The storage battery is installed on the outer wall of the heating box. Multiple heating wires are provided inside the heating box, and all of the multiple heating wires are electrically connected to the storage battery.

[0010] Preferably, the drive mechanism includes a first air compressor and a jet pipe. The first air compressor is installed on one side of the dechlorination tower. One end of the jet pipe is connected to the first air compressor, and the other end of the jet pipe extends into the interior of the dechlorination tower. The central axis of the section of the jet pipe inside the dechlorination tower is tangent to the circle formed by the rotation path of the rotating blade.

[0011] Preferably, the blowing mechanism includes a second air compressor and a blowing pipe. The second air compressor is installed on the other side of the dechlorination tower. One end of the blowing pipe is connected to the second air compressor, and the other end of the blowing pipe extends into the interior of the dechlorination tower. The section of the blowing pipe inside the dechlorination tower extends obliquely upward to below the rotating blades.

[0012] Preferably, the inner wall of the air blowing pipe near the opening end is provided with a blocking part, the blocking part gradually extends towards the opening end inside the air blowing pipe, and the lower wall of the air blowing pipe is also provided with a drainage port, the drainage port being located on the side of the blocking part near the opening end.

[0013] Preferably, a water pump is provided on the liquid outlet pipe.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. The dechlorination tower is used to hold the recovered dilute sulfuric acid solution. The dilute sulfuric acid flows out of the outlet pipe and is pumped back to the return pipe. It is then sprayed downwards from the top of the dechlorination tower by nozzles on the return pipe, forming a circulation of the dilute sulfuric acid within the tower. The dechlorination efficiency is greatly improved by heating the dilute sulfuric acid. As the nozzles spray the dilute sulfuric acid downwards from the top of the tower, a blowing mechanism continuously introduces compressed gas into the tower. After being dispersed by the nozzles, the chlorine gas in the dilute sulfuric acid is easily discharged through the compressed gas outlet pipe at the top of the tower, achieving a simple and efficient removal of chlorine from the dilute sulfuric acid. Simultaneously, the drive mechanism rotates the distribution mechanism, further dispersing the falling dilute sulfuric acid, resulting in more thorough removal of chlorine.

[0016] 2. Because the air blowing pipe is located below the rotating blades, the dispersed dilute sulfuric acid solution can easily enter the air blowing pipe through its inlet. The installed baffle prevents the dilute sulfuric acid solution from flowing further into the inlet, confining it within the air blowing pipe near the inlet. Simultaneously, because the lower wall of the air blowing pipe has a drain port located near the inlet of the baffle, the dilute sulfuric acid solution is discharged through the drain port, preventing it from penetrating deeper into the air blowing pipe and affecting its operation. Furthermore, because the baffle gradually slopes towards the inlet within the air blowing pipe, its presence does not significantly impede the normal discharge of compressed air. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0019] Figure 2 This is a partial structural schematic diagram of an embodiment of the present application for illustrating the tilting rod;

[0020] Figure 3 This is a partial schematic diagram illustrating the heating structure according to an embodiment of this application;

[0021] Figure 4 This is a structural schematic diagram illustrating the positional relationship between the jet pipe and the rotating blades according to an embodiment of this application;

[0022] Figure 5 yes Figure 1 Enlarged view of part A in the image.

[0023] In the diagram, 1. Dechlorination tower; 11. Liquid outlet pipe; 111. Water pump; 12. Liquid return pipe; 13. Spray pipe; 14. Nozzle; 2. Heating mechanism; 21. Heating box; 22. Battery; 23. Heating wire; 3. Distribution mechanism; 31. Inclined rod; 32. Rotating column; 33. Rotating blade; 4. Drive mechanism; 41. First air compressor; 42. Jet pipe; 5. Air blowing mechanism; 51. Second air compressor; 52. Air blowing pipe; 6. Gas outlet pipe; 7. Gas storage chamber; 8. Blocking part; 9. Drainage port. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] The following description, in conjunction with specific embodiments, provides further details. Figures 1-5 This utility model relates to a dilute sulfuric acid dechlorination device, comprising a dechlorination tower 1, a heating mechanism 2, a uniform distribution mechanism 3, a driving mechanism 4, an air blowing mechanism 5, and an outlet pipe 6. The bottom of the dechlorination tower 1 is connected to an outlet pipe 11, and a return pipe 12 is connected near the top. One end of the return pipe 12, located inside the dechlorination tower 1, is connected to a spray pipe 13, which has multiple downward-facing nozzles 14. The outlet pipe 6 is located at the top of the dechlorination tower 1 and is connected to a gas storage chamber 7. A water pump 111 is installed on the outlet pipe 11. The water pump 111 pumps the dilute sulfuric acid solution from the dechlorination tower 1 into the outlet pipe 11, and then returns it to the dechlorination tower 1 via the return pipe 12.

[0027] Meanwhile, one end of the heating mechanism 2 is connected to the outlet pipe 11 and the other end is connected to the return pipe 12. The heating mechanism 2 is used to heat the dilute sulfuric acid solution entering the outlet pipe 11, so that the chlorine in the dilute sulfuric acid solution is more easily removed. The uniform distribution mechanism 3 is rotatably installed in the dechlorination tower 1 and located below the nozzle 13, and is used to contact the dilute sulfuric acid solution sprayed by the nozzle 14. The drive mechanism 4 is installed in the dechlorination tower 1 and is used to drive the uniform distribution mechanism 3 to rotate. The air blowing mechanism 5 is installed on the side of the dechlorination tower 1 away from the drive mechanism 4 and is used to blow compressed gas from bottom to top towards the uniform distribution mechanism 3.

[0028] Based on this, the dilute sulfuric acid solution to be recovered is held in dechlorination tower 1. The dilute sulfuric acid in dechlorination tower 1 flows out from the outlet pipe 11 and is returned to the return pipe 12 by the water pump 111. Then, it is sprayed downwards from the top of dechlorination tower 1 by the nozzle 14 on the return pipe 12, forming a circulation of dilute sulfuric acid in dechlorination tower 1. The dechlorination efficiency of the heated dilute sulfuric acid is greatly improved during the dechlorination process. When the nozzle 14 sprays dilute sulfuric acid downwards from the top of dechlorination tower 1, the air blowing mechanism 5 continuously introduces compressed gas into dechlorination tower 1. After being dispersed by the nozzle 14, the chlorine gas in the dilute sulfuric acid is easily discharged with the compressed gas through the outlet pipe 6 at the top of dechlorination tower 1, achieving the purpose of simple and efficient removal of chlorine gas from dilute sulfuric acid. At the same time, after the drive mechanism 4 drives the uniform distribution mechanism 3 to rotate, the falling dilute sulfuric acid can be further dispersed, making the removal of chlorine gas contained in the dilute sulfuric acid more complete.

[0029] In some implementations, such as Figure 1 , Figure 2 As shown, the distribution mechanism 3 includes an inclined rod 31, a rotating column 32, and rotating blades 33. The highest end of the inclined rod 31 is connected to the inner wall of the dechlorination tower 1, and the lowest end of the inclined rod 31 extends obliquely to the middle of the dechlorination tower 1. The rotating column 32 is vertically rotatably positioned at the lowest end of the inclined rod 31, and multiple rotating blades 33 are arranged circumferentially around the rotating column 32. The inclined rod 31 has a triangular cross-sectional shape, with its tip pointing vertically upwards. With this configuration, under the drive of the drive mechanism 4, multiple rotating blades 33 will rotate simultaneously, making it easier to disperse the dilute sulfuric acid solution falling from the nozzle 14. Furthermore, when the dispersed dilute sulfuric acid solution falls onto the inclined rod 31, due to the triangular cross-sectional shape of the inclined rod 31, the dilute sulfuric acid solution will not remain excessively on the inclined rod 31, making it less likely for dilute sulfuric acid solution to remain on the inclined rod 31. For example, to prevent the dilute sulfuric acid solution from corroding the inclined rod 31, an anti-corrosion paint is applied to the surface of the inclined rod 31. Similarly, the surfaces of the rotating column 32 and the rotating blade 33 are also coated with anti-corrosion paint.

[0030] In some implementations, combined with Figure 1 , Figure 3 The heating mechanism 2 includes a heating chamber 21, a battery 22, and heating wires 23. One end of the heating chamber 21 is connected to the outlet pipe 11, and the other end is connected to the return pipe 12. The battery 22 is installed on the outer wall of the heating chamber 21. Multiple heating wires 23 are provided inside the heating chamber 21, and all of the heating wires 23 are electrically connected to the battery 22. After the battery 22 is electrically connected to the heating wires 23, the heating wires 23 will generate heat. Since there are multiple heating wires 23 inside the heating chamber 21, the contact area between the heating wires 23 and the dilute sulfuric acid solution inside the heating chamber 21 can be increased, thereby improving the heating efficiency and heating effect of the dilute sulfuric acid solution, and thus indirectly improving the dechlorination effect of the dilute sulfuric acid.

[0031] In some implementations, reference is made to Figure 1 , Figure 4 The drive mechanism 4 includes a first air compressor 41 and a jet pipe 42. The first air compressor 41 is installed on one side of the dechlorination tower 1. One end of the jet pipe 42 is connected to the first air compressor 41, and the other end of the jet pipe 42 extends into the interior of the dechlorination tower 1. The central axis of the section of the jet pipe 42 inside the dechlorination tower 1 is tangent to the circle formed by the rotation path of the rotating blade 33. With this configuration, the compressed air generated after starting the first air compressor 41 can be sprayed into the dechlorination tower 1 through the jet pipe 42. Since the extension direction of the section of the jet pipe 42 inside the dechlorination tower 1 is tangent to the circle formed by the rotation path of the rotating blade 33, the compressed air sprayed from the jet pipe 42 can more easily push the rotating blade 33. That is, the thrust effect of the compressed air on the rotating blade 33 is better, which is beneficial to improving the driving effect and rotation effect of the rotating blade 33.

[0032] For example, such as Figure 1 As shown, the air blowing mechanism 5 includes a second air compressor 51 and an air blowing pipe 52. The second air compressor 51 is installed on the other side of the dechlorination tower 1. One end of the air blowing pipe 52 is connected to the second air compressor 51, and the other end of the air blowing pipe 52 extends into the interior of the dechlorination tower 1. The section of the air blowing pipe 52 inside the dechlorination tower 1 extends obliquely upward to below the rotating blade 33. With this arrangement, the compressed air blown out by the air blowing pipe 52 can be sprayed from bottom to top, while the dilute sulfuric acid solution drips from top to bottom. Therefore, the compressed air and the dilute sulfuric acid solution can be fully mixed to improve the contact effect between the compressed air and the dilute sulfuric acid solution. It is worth noting that the compressed air ejected by the jet pipe 42 can not only be used as a driving force, but can also be indirectly mixed with the dilute sulfuric acid solution. Combined with the compressed air blown out by the air blowing pipe 52, the contact effect between the compressed air and the dilute sulfuric acid solution can be further improved.

[0033] In some implementations, combined with Figure 1 , Figure 5The air blowing pipe 52 has a blocking part 8 on its inner wall near the opening end. The blocking part 8 gradually extends towards the opening end within the air blowing pipe 52. The lower wall of the air blowing pipe 52 also has a drain port 9, located on the side of the blocking part 8 near the opening end. With this configuration, since the air blowing pipe 52 is located below the rotating blade 33, the dispersed dilute sulfuric acid solution can easily enter the air blowing pipe 52 through its opening end. The blocking part 8 prevents the dilute sulfuric acid solution from flowing further into the opening end of the air blowing pipe 52, confining it within the air blowing pipe 52 near the opening end. Simultaneously, because the lower wall of the air blowing pipe 52 also has a drain port 9, located on the side of the blocking part 8 near the opening end, the dilute sulfuric acid solution will be discharged through the drain port 9, preventing it from further penetrating deeper into the air blowing pipe 52 and affecting its operation. Furthermore, since the blocking part 8 gradually extends towards the end of the pipe opening within the air blowing pipe 52, the presence of the blocking part 8 will not significantly affect the normal discharge of compressed air.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dilute sulfuric acid dechlorination device, characterized in that, include: A dechlorination tower (1) is connected to an outlet pipe (11) at the bottom and a return pipe (12) near the top. One end of the return pipe (12) inside the dechlorination tower (1) is connected to a spray pipe (13). The spray pipe (13) has multiple downward-facing nozzles (14). Heating mechanism (2), one end of which is connected to the outlet pipe (11) and the other end is connected to the return pipe (12). The heating mechanism (2) is used to heat the dilute sulfuric acid solution entering the outlet pipe (11). The uniform distribution mechanism (3) is rotatably installed inside the dechlorination tower (1) and located below the nozzle (13) for contacting the dilute sulfuric acid solution sprayed down by the nozzle (14); The drive mechanism (4) is installed inside the dechlorination tower (1) and is used to drive the uniform distribution mechanism (3) to rotate; The blowing mechanism (5) is installed on the side of the dechlorination tower (1) away from the drive mechanism (4) and is used to blow compressed gas from bottom to top towards the distribution mechanism (3). The gas outlet pipe (6) is connected to the top of the dechlorination tower (1) and is connected to the gas storage chamber (7); The uniform distribution mechanism (3) includes an inclined rod (31), a rotating column (32), and rotating blades (33). The highest end of the inclined rod (31) is connected to the inner wall of the dechlorination tower (1), and the lowest end of the inclined rod (31) extends obliquely to the middle position of the dechlorination tower (1). The rotating column (32) is vertically rotatably located at the lowest end of the inclined rod (31), and multiple rotating blades (33) are provided around the rotating column (32). The blowing mechanism (5) includes a second air compressor (51) and a blowing pipe (52). The second air compressor (51) is installed on the other side of the dechlorination tower (1). One end of the blowing pipe (52) is connected to the second air compressor (51), and the other end of the blowing pipe (52) extends into the interior of the dechlorination tower (1). The section of the blowing pipe (52) inside the dechlorination tower (1) extends upward at an angle to below the rotating blade (33). The air blowing pipe (52) has a blocking part (8) on the inner wall near the pipe opening end. The blocking part (8) gradually extends towards the pipe opening end inside the air blowing pipe (52). The lower wall of the air blowing pipe (52) also has a drain port (9), which is located on the side of the blocking part (8) near the pipe opening end.

2. The dilute sulfuric acid dechlorination device according to claim 1, characterized in that, The inclined rod (31) has a triangular cross-sectional shape, and the tip of the inclined rod (31) is vertically upward.

3. The dilute sulfuric acid dechlorination device according to claim 1, characterized in that, The heating mechanism (2) includes a heating box (21), a storage battery (22) and heating wires (23). One end of the heating box (21) is connected to the liquid outlet pipe (11) and the other end is connected to the liquid return pipe (12). The storage battery (22) is installed on the outer wall of the heating box (21). Multiple heating wires (23) are provided inside the heating box (21), and all of the multiple heating wires (23) are electrically connected to the storage battery (22).

4. The dilute sulfuric acid dechlorination device according to claim 1, characterized in that, The drive mechanism (4) includes a first air compressor (41) and a jet pipe (42). The first air compressor (41) is installed on one side of the dechlorination tower (1). One end of the jet pipe (42) is connected to the first air compressor (41), and the other end of the jet pipe (42) extends into the interior of the dechlorination tower (1). The central axis of the section of the jet pipe (42) inside the dechlorination tower (1) is tangent to the circle formed by the rotation path of the rotating blade (33).

5. The dilute sulfuric acid dechlorination device according to claim 1, characterized in that, A water pump (111) is installed on the liquid outlet pipe (11).

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