A continuous gas phase cooling device for chlorination reactions

Abstract

The utility model relates to chlorination reaction technical field, concretely is a kind of chlorination reaction continuous gas phase cooling device, including first cooling tower, second cooling tower and spray tower, the inside of first cooling tower and second cooling tower is evenly provided with spiral cooling pipe, the inside of first cooling tower and second cooling tower is evenly provided with cleaning mechanism, the cleaning mechanism includes first motor, the output of first motor is connected with shaft, the outer surface of shaft is connected with cleaning brush.The utility model is cooled continuously to gas phase by setting first cooling tower and second cooling tower, heat exchange is carried out to gas phase by spiral cooling pipe, and gas phase is cooled, and the rotation of cleaning brush is driven by first motor, spiral cooling pipe is cleaned, so that it is not necessary to frequently disassemble spiral cooling pipe and clean, after long time use, by disassembling two arc-shaped plates, spiral cooling pipe is conveniently taken out and cleaned, to prevent the existence of cleaning dead angle.

Description

Technical Field

[0001] This utility model relates to the field of chlorination reaction technology, specifically to a continuous gas-phase cooling device for chlorination reactions. Background Technology

[0002] Chlorine is the most important chemical substance in the chlorination process. It is a highly toxic gas that is yellowish-green at room temperature and pressure, with a strong pungent odor. It is denser than air and has an asphyxiating effect. Chlorine mainly affects the trachea, bronchi, bronchioles, and alveoli, leading to corresponding lesions. When the concentration of chlorine in the air reaches 10 mg / m3, it produces a strong irritant effect. Poisoned individuals will experience mucosal irritation, such as tearing, conjunctival congestion, stinging, burning sensation in the nasopharynx, and coughing. Chlorination reactions usually involve high temperatures, and the reaction system is filled with chlorine or one or more extremely hazardous materials. In fine chemicals, chlorination reactions are mostly carried out in batches, with chlorine gas being introduced into the reactor and heated simultaneously. Therefore, a closed-loop continuous gas-phase cooling device is required.

[0003] A search revealed a Chinese patent disclosure for a cooling device for a chlorination reactor (publication number: CN214892011U), comprising a reactor body, a stirring shaft coaxially rotating within the reactor body, a stirring motor at the top of the reactor body, one end of the stirring shaft extending out of the reactor body and connected to the stirring motor, and several stirring paddles horizontally fixed on the stirring shaft; a feed inlet at the top of the reactor body and a discharge outlet at the bottom of the reactor body; a cooling coil spirally arranged near the inner wall of the reactor body, with a coolant inlet at the top of the cooling coil and a coolant outlet at the bottom of the cooling coil; by installing a cooling coil inside the reactor and circulating coolant within it, the reactor can be effectively and uniformly cooled, with a rapid cooling rate.

[0004] When the above-mentioned patent is used, the cooling coil is installed in the reactor and the coolant is introduced to cool the reactor. Since the pipes are built in, it is not convenient to clean them, and there are likely to be blind spots when cleaning. In addition, if the pipes are damaged, it will be troublesome to repair and replace them later. Therefore, we propose a continuous gas phase cooling device for chlorination reaction. Utility Model Content

[0005] The technical problem to be solved by this application is that, when the above-mentioned patent is used, the pipe is built-in, which makes it inconvenient to clean and makes it easy to have blind spots during cleaning. On the other hand, when the pipe is damaged, it will be troublesome to repair and replace the pipe later.

[0006] To address the aforementioned technical problems, this application provides a continuous gas-phase cooling device for chlorination reactions, comprising a first cooling tower, a second cooling tower, and a spray tower. The first cooling tower, the spray tower, and the second cooling tower are arranged sequentially in a horizontal direction. The first cooling tower and the second cooling tower are used for continuous cooling of the gas phase. Both the first cooling tower and the second cooling tower are equipped with spiral cooling pipes inside. Both the first cooling tower and the second cooling tower are also equipped with cleaning mechanisms inside, which are used to clean the surface of the spiral cooling pipes. The cleaning mechanism includes a first motor, which is installed above the first cooling tower and the second cooling tower. The output end of the first motor is connected to a rotating shaft, and a cleaning brush is connected to the outer surface of the rotating shaft. The cleaning brush is in contact with the surface of the spiral cooling pipe.

[0007] In some embodiments, the first cooling tower and the second cooling tower are each provided with two arc-shaped plates on their exteriors. The spiral cooling pipe is located between the two arc-shaped plates and fixed inside one of the arc-shaped plates. Side plates are connected to both sides of the arc-shaped plates. Multiple locking holes are provided on the outer surface of the side plates. Locking bolts are provided inside the multiple locking holes. Locking nuts are connected to the external threads of the locking bolts.

[0008] In some embodiments, a support shaft is rotatably passed through the top outer surface of the spray tower, and an inlet pipe is connected through the inside of the support shaft. A conveying pipe for conveying spray liquid is provided above the inlet pipe, and a horizontally arranged spray pipe is connected below the inlet pipe. A plurality of downwardly arranged spray heads are connected to the outer surface of the spray pipe, and a driving mechanism for driving the spray pipe to spray evenly is provided at the top of the spray head.

[0009] In some embodiments, the drive mechanism includes a second motor mounted on the top of the spray tower, the output end of the second motor is fixedly fitted with a drive gear, and the outer surface of the support shaft is fixedly fitted with a driven gear, the drive gear and the outer surface of the driven gear being movably engaged.

[0010] In some embodiments, a rotary joint is connected to the top of the inlet pipe, and the delivery pipe is connected to the other end of the rotary joint.

[0011] In some embodiments, the interiors of the first cooling tower, the second cooling tower, and the spray tower are all fitted with packing plates by bolts.

[0012] In some embodiments, a first gas phase inlet pipe is connected to one side of the lower end of the first cooling tower, a first gas phase outlet pipe is connected to one side of the upper end of the first cooling tower, and a connecting pipe is connected to the other end of the first gas phase outlet pipe, the other end of the connecting pipe being connected to the interior of the spray tower.

[0013] In some embodiments, a second gas phase inlet pipe is connected to the lower side of the second cooling tower, and a connecting pipe is connected to the upper side of the spray tower, with the other end of the connecting pipe connected to the second gas phase inlet pipe.

[0014] In some embodiments, a plurality of blades are fixedly sleeved on the outer surface of the rotating shaft.

[0015] In some embodiments, the outer surfaces of the two arc-shaped plates are respectively provided with through holes to facilitate the passage of both ends of the spiral cooling pipe through the arc-shaped plates.

[0016] This utility model has at least the following beneficial effects: 1. This utility model continuously cools the gas phase by setting up a first cooling tower and a second cooling tower, and exchanges heat with the gas phase through a spiral cooling pipe to cool the gas phase. The first motor drives the cleaning brush to rotate and clean the spiral cooling pipe, thus eliminating the need for frequent disassembly and cleaning of the spiral cooling pipe. After long-term use, the spiral cooling pipe can be easily removed for cleaning by disassembling the two arc plates, preventing the existence of cleaning dead corners.

[0017] 2. This utility model delivers the spray liquid into the spray pipe and drives the drive gear to rotate via a second motor. The drive gear drives the driven gear to rotate, which in turn drives the support shaft to rotate the spray pipe. This allows the spray liquid to be sprayed evenly onto the surface of the gas phase in the spray tower, thus performing comprehensive spraying of the gas phase and improving the uniformity of the spraying. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the front sectional view of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the two arc-shaped plates of this utility model; Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the arc-shaped plate structure of this utility model.

[0019] In the diagram: 1. First cooling tower; 2. Spray tower; 21. Support shaft; 22. Spray pipe; 23. Liquid inlet pipe; 24. Conveying pipe; 25. Rotary joint; 26. Second motor; 27. Drive gear; 28. Driven gear; 3. Second cooling tower; 4. Spiral cooling pipe; 41. Rotating shaft; 42. First motor; 43. Cleaning brush; 44. Arc plate; 45. Side plate; 46. Through hole; 47. Blade; 5. Packing plate; 6. Connecting pipe; 7. Connecting pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 As shown in Figure 5, this utility model provides a technical solution: a continuous gas phase cooling device for chlorination reaction, including a first cooling tower 1, a second cooling tower 3, and a spray tower 2. The first cooling tower 1, the spray tower 2, and the second cooling tower 3 are arranged sequentially in a horizontal direction. The first cooling tower 1 and the second cooling tower 3 are used for continuous cooling of the gas phase. Both the first cooling tower 1 and the second cooling tower 3 are equipped with spiral cooling pipes 4 inside. Both the first cooling tower 1 and the second cooling tower 3 are equipped with cleaning mechanisms, which are used to clean the surface of the spiral cooling pipes 4. Specifically, the gas phase generated during the chlorination reaction enters the first cooling tower 1 for initial cooling. The gas phase that has been initially cooled in the first cooling tower 1 enters the spray tower 2 for spraying. The gas phase that has been sprayed enters the second cooling tower 3 for secondary cooling. The cleaning mechanism cleans the impurities adhering to the spiral cooling pipes 4, thus eliminating the need for frequent disassembly and cleaning of the spiral cooling pipes 4.

[0022] The cleaning mechanism includes a first motor 42, which is installed above the first cooling tower 1 and the second cooling tower 3. The output end of the first motor 42 is connected to a rotating shaft 41, and a cleaning brush 43 is connected to the outer surface of the rotating shaft 41. The cleaning brush 43 is in contact with the surface of the spiral cooling pipe 4. Specifically, the first motor 42 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the cleaning brush 43 to rotate, thereby cleaning the impurities adhering to the spiral cooling pipe 4, so that the spiral cooling pipe 4 does not need to be disassembled and cleaned frequently.

[0023] In some embodiments, the first cooling tower 1 and the second cooling tower 3 are each provided with two arc-shaped plates 44 on their exteriors. The spiral cooling pipe 4 is located between the two arc-shaped plates 44 and fixed inside one of the arc-shaped plates 44. Side plates 45 are connected to both sides of the arc-shaped plates 44. Multiple locking holes are provided on the outer surface of the side plates 45. Locking bolts are provided inside the multiple locking holes. Locking nuts are connected to the external threads of the locking bolts. Specifically, after the first cooling tower 1 and the second cooling tower 3 have been used for a period of time, the locking nuts are unscrewed so that the locking nuts can be removed from the surface of the locking bolts, thereby releasing the two arc-shaped plates 44 from their limits and removing the two arc-shaped plates 44. This allows the spiral cooling pipe 4 to be disassembled for cleaning, preventing the existence of cleaning dead corners.

[0024] The inner walls of the first cooling tower 1 and the second cooling tower 3 are provided with extension plates. Two arc-shaped plates 44 are connected to the extension plates by bolts. Sealing gaskets are provided between the two side plates 45 and between the arc-shaped plates 44 and the extension plates, thereby increasing the sealing between the arc-shaped plates 44 and the first cooling tower 1 and the second cooling tower 3.

[0025] In some embodiments, a support shaft 21 is rotatably passed through the top outer surface of the spray tower 2, and an inlet pipe 23 is connected through the inside of the support shaft 21. A conveying pipe 24 for conveying spray liquid is provided above the inlet pipe 23, and a horizontally arranged spray pipe 22 is connected below the inlet pipe 23. A plurality of downwardly arranged spray heads are connected to the outer surface of the spray pipe 22. A driving mechanism for driving the spray pipe 22 to spray evenly is provided at the top of the spray head. Specifically, the other end of the conveying pipe 24 is connected to an external conveying pump for conveying spray liquid. The conveying pump conveys the spray liquid through the conveying pipe 24 to the inlet pipe 23 and enters the inlet pipe 23. It is then sprayed out through the spray head to spray the gas phase. The driving mechanism drives the spray pipe 22 to rotate, so as to spray the gas phase comprehensively and improve the uniformity of spraying.

[0026] In some embodiments, the driving mechanism includes a second motor 26 mounted on the top of the spray tower 2. The output end of the second motor 26 is fixedly fitted with a drive gear 27, and the outer surface of the support shaft 21 is fixedly fitted with a driven gear 28. The outer surfaces of the drive gear 27 and the driven gear 28 are movably meshed. Specifically, the second motor 26 drives the drive gear 27 to rotate, which in turn drives the driven gear 28 to rotate, causing the support shaft 21 to rotate. The support shaft 21 then drives the spray pipe 22 to rotate, thus performing comprehensive spraying of the gas phase and improving the uniformity of the spraying.

[0027] In some embodiments, a rotary joint 25 is connected to the top of the inlet pipe 23, and the delivery pipe 24 is connected to the other end of the rotary joint 25. Specifically, when the support shaft 21 drives the inlet pipe 23 to rotate, the delivery pipe 24 and the inlet pipe 23 rotate relative to each other under the action of the rotary joint 25, so that the delivery pipe 24 does not affect the delivery of spray liquid when the inlet pipe 23 rotates.

[0028] In some embodiments, the first cooling tower 1, the second cooling tower 3, and the spray tower 2 are all equipped with packing plates 5 by bolts. Specifically, the packing plates 5 in the first cooling tower 1 and the second cooling tower 3 filter the gas in the gas phase, and the packing plates 5 in the spray tower 2 filter the spray liquid.

[0029] In some embodiments, a first gas phase inlet pipe is connected to one side of the lower end of the first cooling tower 1, a first gas phase outlet pipe is connected to one side of the upper end of the first cooling tower, and a connecting pipe 6 is connected to the other end of the first gas phase outlet pipe. The other end of the connecting pipe 6 is connected to the interior of the spray tower 2. Specifically, the gas phase generated by the chlorination reaction is initially cooled in the first cooling tower 1, enters the first cooling tower 1 through the first gas phase inlet pipe for further cooling, and is discharged through the connecting pipe 6 and enters the spray tower 2 for spraying.

[0030] Both the first cooling tower 1 and the second cooling tower 3 are connected to a drain pipe at the bottom. When the gas phase is cooled, part of it is converted into liquid phase, and the liquid phase material is discharged through the drain port.

[0031] In some embodiments, a second gas phase inlet pipe is connected to the lower side of the second cooling tower 3, and a connecting pipe 7 is connected to the upper side of the spray tower 2. The other end of the connecting pipe 7 is connected to the second gas phase inlet pipe. Specifically, the gas phase after spraying in the spray tower 2 enters the second gas phase inlet pipe through the connecting pipe 7 and enters the second cooling pipe for secondary cooling.

[0032] In some embodiments, a plurality of blades 47 are fixedly sleeved on the outer surface of the rotating shaft 41. Specifically, when the rotating shaft 41 rotates, it drives the blades 47 to rotate and generate airflow. Under the action of the airflow, some impurities adhering to the packing plate 5 are flushed back, reducing the possibility of the packing plate 5 being blocked.

[0033] In some embodiments, the outer surfaces of the two arc-shaped plates 44 are respectively provided with through holes 46 to facilitate the passage of both ends of the spiral cooling pipe 4 through the arc-shaped plates 44. Specifically, the through holes 46 provide a space for the inlet end and outlet end of the spiral cooling pipe 4. The inlet end is connected to the external coolant inlet pipe, and the outlet end is connected to the external return pipe.

[0034] The through hole 46 is equipped with a sealing ring to increase the sealing between the spiral cooling pipe 4 and the through hole 46.

[0035] Based on the above embodiments, the following is the complete working principle of the above embodiments: During use, the gaseous phase generated by the chlorination reaction undergoes initial cooling in the first cooling tower 1. It enters the first cooling tower 1 through the first gaseous phase inlet pipe for cooling, and impurities in the gaseous phase are filtered by the packing plate 5 within the first cooling tower 1. Cooling liquid is then transported to the spiral cooling pipe 4, where it exchanges heat with the gaseous phase, initially cooling it and partially converting it into a liquid phase. The liquid phase material is then discharged through the drain port. The material, still in the gaseous phase after initial cooling, is discharged through the first gaseous phase outlet pipe and enters the spray inlet through the connecting pipe 6. From there, it enters the spray tower 2 for spraying. After the spraying operation is completed, the gas phase is discharged from the spray outlet and enters the second gas phase inlet pipe through the connecting pipe 7, and then enters the second cooling tower 3 for further cooling. Its cooling principle is the same as that in the first cooling tower 1. During use, the first motor 42 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the cleaning brush 43 to rotate, cleaning the impurities adhering to the spiral cooling pipe 4. This eliminates the need to frequently disassemble and clean the spiral cooling pipe 4. After a period of use, the locking nut is unscrewed, allowing the locking nut to be removed from the surface of the locking bolt, thereby releasing the two arc plates 44 from their limit and removing them. This allows the spiral cooling pipe 4 to be disassembled for cleaning, preventing any cleaning dead corners.

[0036] During spraying, the gas phase enters the spray tower 2, and the spray liquid is transported to the delivery pipe 24 by an external delivery pump. It is then transported to the spray pipe 22 through the liquid inlet pipe 23. The spray liquid is sprayed out through the spray head to spray the gas phase, further removing impurities. The second motor 26 drives the drive gear 27 to rotate, which in turn drives the driven gear 28 to rotate, causing the support shaft 21 to rotate. The support shaft 21 drives the spray pipe 22 to rotate, thus spraying the gas phase comprehensively and improving the uniformity of the spray. The spray liquid is filtered through the packing plate 5 inside the spray tower 2 and discharged from the spray tower 2 through the return pipe.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A continuous gas-phase cooling device for chlorination reaction, comprising a first cooling tower (1), a second cooling tower (3), and a spray tower (2), characterized in that: The first cooling tower (1), the spray tower (2), and the second cooling tower (3) are arranged in sequence along the horizontal direction. The first cooling tower (1) and the second cooling tower (3) are used to continuously cool the gas phase. The first cooling tower (1) and the second cooling tower (3) are both equipped with spiral cooling pipes (4). The first cooling tower (1) and the second cooling tower (3) are both equipped with cleaning mechanisms. The cleaning mechanisms are used to clean the surface of the spiral cooling pipes (4). The cleaning mechanism includes a first motor (42), which is installed above the first cooling tower (1) and the second cooling tower (3). The output end of the first motor (42) is connected to a rotating shaft (41), and a cleaning brush (43) is connected to the outer surface of the rotating shaft (41). The cleaning brush (43) is in contact with the surface of the spiral cooling pipe (4).

2. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: The first cooling tower (1) and the second cooling tower (3) are each provided with two arc-shaped plates (44). The spiral cooling pipe (4) is located between the two arc-shaped plates (44) and fixed inside one of the arc-shaped plates (44). Both sides of the arc-shaped plate (44) are connected with side plates (45). The outer surface of the side plate (45) is provided with multiple locking holes. The locking holes are provided with locking bolts. The locking bolts are connected to locking nuts by external threads.

3. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: The top outer surface of the spray tower (2) is rotatably connected to a support shaft (21), and the inside of the support shaft (21) is connected to an inlet pipe (23). Above the inlet pipe (23) is a delivery pipe (24) for conveying spray liquid. Below the inlet pipe (23) is a horizontally arranged spray pipe (22). The outer surface of the spray pipe (22) is connected to multiple downward-facing spray heads. The top of the spray head is provided with a driving mechanism for driving the spray pipe (22) to spray evenly.

4. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 3, characterized in that: The drive mechanism includes a second motor (26) installed on the top of the spray tower (2). The output end of the second motor (26) is fixedly fitted with a drive gear (27). The outer surface of the support shaft (21) is fixedly fitted with a driven gear (28). The drive gear (27) and the outer surface of the driven gear (28) are in movable meshing.

5. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 3, characterized in that: The top of the inlet pipe (23) is connected to a rotary joint (25), and the other end of the delivery pipe (24) is connected to the rotary joint (25).

6. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: The first cooling tower (1), the second cooling tower (3) and the spray tower (2) are all equipped with packing plates (5) by bolts.

7. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: The first cooling tower (1) has a first gas phase inlet pipe connected to one side of its lower end and a first gas phase outlet pipe connected to one side of its upper end. The other end of the first gas phase outlet pipe is connected to a connecting pipe (6), and the other end of the connecting pipe (6) is connected to the interior of the spray tower (2).

8. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: The second cooling tower (3) has a second gas phase inlet pipe connected to its lower side, and the spray tower (2) has a connecting pipe (7) connected to its upper side. The other end of the connecting pipe (7) is connected to the second gas phase inlet pipe.

9. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 1, characterized in that: Multiple blades (47) are fixedly sleeved on the outer surface of the rotating shaft (41).

10. The continuous gas-phase cooling apparatus for chlorination reaction according to claim 2, characterized in that: The outer surfaces of the two arc-shaped plates (44) are respectively provided with through holes (46) to facilitate the passage of the two ends of the spiral cooling pipe (4) through the arc-shaped plate (44).

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