Cooling device for bubble cap PVC tray
By designing serpentine Hastelloy cooling pipes and a high-pressure pulse generator on the PVC trays of the bubble cap, the problem of high-temperature corrosion of the trays during the drying process of concentrated sulfuric acid was solved, achieving efficient cooling and extending equipment life, while also being environmentally friendly.
Patent Information
- Application Number
- CN202520316312.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the existing technology, the PVC trays of the chlorine drying tower are prone to softening or corrosion due to high temperature when using concentrated sulfuric acid, which affects the service life of the equipment.
A cooling device for blister PVC trays was designed, which uses Hastelloy cooling tubes distributed in a serpentine pattern on the tray surface and combines them with a high-pressure pulse generator to remove crystals, achieving non-contact clean cooling.
It effectively reduces tray temperature, extends equipment life, improves cooling efficiency, reduces the use of chemical agents, and is environmentally friendly and efficient.
Smart Images
Figure CN223783401U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to tray technical field, concretely relates to a cooling device for bubble cap PVC tray. BACKGROUND
[0002] The bubble cap tray is a common mass transfer device, which is mainly used in the plate column to realize the full contact, mixing and reaction of gas and liquid.
[0003] In the process of drying chlorine gas by using concentrated sulfuric acid, the bubble cap tray of the chlorine gas drying tower may generate high temperature, which may cause the softening or corrosion of the PVC tray and the bubble cap. INNOVATION CONTENT
[0004] The utility model discloses a cooling device for bubble cap PVC tray, which solves the problem of PVC tray cooling in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A cooling device for bubble cap PVC tray, comprising a tower body, a PVC tray is arranged in the tower body, a reinforcing rib plate is arranged in the middle of the surface of the PVC tray, a plurality of gas lifting pipes are symmetrically arranged at both ends of the reinforcing rib plate, a bubble cap is arranged on the gas lifting pipe, and a cooling assembly is arranged near the bubble cap.
[0007] Further, the gas lifting pipes are arranged in a circular structure on the surface of the PVC tray.
[0008] Further, the surface of the PVC tray is filled with a concentrated sulfuric acid solution, and a sulfuric acid discharge port is arranged below the PVC tray.
[0009] Further, a reinforcing rib is arranged in the gas lifting pipe, the reinforcing rib is arranged in a cross shape in the gas lifting pipe, a positioning shaft is arranged in the middle of the reinforcing rib, and the bubble cap covers around the gas lifting pipe through the positioning shaft.
[0010] Further, the cooling assembly comprises a cooling pipe and a flange plate, the flange plate is symmetrically arranged on the outer wall of the tower body, the cooling pipe is arranged in a serpentine shape near the gas lifting pipe, water outlets and water inlets are arranged at both ends of the cooling pipe, the water outlets and the water inlets are arranged in the flange plates at both ends and extend to the outside of the tower body, the cooling pipe is filled with cooling water, and the cooling pipe is immersed in the concentrated sulfuric acid solution.
[0011] Further, the cooling pipe is made of hastelloy alloy. The hastelloy alloy can effectively resist the corrosion of concentrated sulfuric acid and has good heat conductivity.
[0012] Further, the PVC tray surface is provided with a limiting block, and the cooling pipe is clamped on the limiting block. The limiting block provides stable support and fixing effect for the cooling pipe. During the operation of the PVC tray, displacement or shaking of the cooling pipe due to factors such as fluid flow, temperature change or external vibration is avoided. The presence of the limiting block effectively limits the movement range of the cooling pipe, ensuring its stability in the predetermined position. By clamping the cooling pipe directly on the limiting block, the installation process is greatly simplified.
[0013] Further, one end of the reinforcing rib plate contacts the inner wall of the tower body, and the other end of the reinforcing rib plate is away from the inner wall of the tower body. The other end of the reinforcing rib plate is away from the inner wall of the tower body, which can facilitate the cooling pipe to bypass the other end of the reinforcing rib plate, so that the cooling pipe is symmetrically distributed with the reinforcing rib plate as the central axis.
[0014] Further, the PVC tray surface has guide lines, the guide lines are trapezoidal, the riser is arranged on the guide lines, the PVC tray surface is also provided with a downcomer, the downcomer is arranged on the guide lines, and a downcomer pipe is arranged on the downcomer.
[0015] Further, the cooling pipe is integrated with a high-voltage pulse generator, one end of the water inlet is connected with a tee pipe, one end of a branch of the tee pipe is provided with the high-voltage pulse generator, and the high-voltage pulse generator is electrically connected with a controller.
[0016] The technical scheme of the utility model has the following beneficial effects:
[0017] 1. The cooling pipe is immersed in concentrated sulfuric acid solution, low-temperature cooling water flows through the cooling pipe, and the heat generated by drying sulfuric acid is transferred to the cooling water through heat exchange and taken out of the tower. The lower the temperature, the better the drying effect of concentrated sulfuric acid, and the lower the water content in chlorine gas. At the same time, the service life of the PVC / FRP bubble cap tower is effectively prolonged, and the service life of the metal equipment using chlorine gas at the back end is also greatly prolonged. The serpentine distribution of the cooling pipe can increase the gas-liquid contact area and improve the heat dissipation effect.
[0018] 2. By integrating a high-voltage pulse generator in the cooling water circuit, the effect of the high-voltage pulse electric field is utilized to automatically remove the sulfuric acid crystals on the outer wall of the coil every 8 hours, thereby avoiding affecting the heat transfer efficiency. This scheme has the advantages of non-contact treatment, no need to add chemical agents, environmental protection and high efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description.
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0021] Figure 2The utility model discloses a top view structure diagram.
[0022] Figure 3 The utility model discloses a PVC tray structure diagram.
[0023] Figure 4 The utility model discloses a control principle diagram.
[0024] Reference signs: 10, tower body, 11, sulfuric acid discharge port, 12, concentrated sulfuric acid solution, 13, downcomer, 14, downcomer pipe, 15, reinforcing rib plate, 20, PVC tray, 21, gas lift pipe, 22, reinforcing rib, 23, positioning shaft, 24, bubble cap, 30, cooling pipe, 31, water outlet, 32, water inlet, 33, flange plate, 34, limit block, 40, guide line, 50, controller, 51, high voltage pulse generator, 52, tee. DETAILED DESCRIPTION
[0025] In order to make the utility model's purpose, technical scheme and advantage more clearly, below will combine with drawing and example, to the utility model carries out further detailed explanation. It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model. Based on the example in the utility model, all other examples obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.
[0026] Example one:
[0027] Reference Figure 1 A bubble cap PVC tray cooling device, including tower body 10, be equipped with PVC tray 20 in tower body 10, be equipped with reinforcing rib plate 15 in the middle of PVC tray 20 surface, reinforcing rib plate 15 two ends symmetrical distribution has several gas lift pipes 21, is installed with bubble cap 24 on gas lift pipe 21, several gas lift pipes 21 are set into circular structure and are distributed on the surface of PVC tray 20.
[0028] PVC tray 20 surface fills with concentrated sulfuric acid solution 12, is installed with sulfuric acid discharge port 11 below PVC tray 20,
[0029] In the above scheme, the concentrated sulfuric acid solution 12 filled on the surface of the PVC tray 20 can be discharged through the sulfuric acid discharge port 11, which facilitates rapid emptying of the concentrated sulfuric acid solution 12 filled on the surface of the PVC tray 20.
[0030] Further reference Figure 3 Gas lift pipe 21 is equipped with reinforcing rib 22, reinforcing rib 22 is set into cross in gas lift pipe 21, is equipped with positioning shaft 23 in reinforcing rib 22 middle, bubble cap 24 passes through positioning shaft 23 and covers around gas lift pipe 21.
[0031] In a further implementation, when installing the blister pack 24, it is only necessary to pass the blister pack 24 through the positioning shaft 23. The outer wall of the positioning shaft 23 has a threaded structure, and the blister pack 24 is then locked onto the positioning shaft 23 with a nut to complete the installation. The quick positioning of the positioning shaft 23 enables the rapid installation of the blister pack 24.
[0032] refer to Figure 2 and Figure 3 A cooling assembly is installed near the bubble cap 24. The cooling assembly includes cooling pipes 30 and flanges 33. The flanges 33 are symmetrically arranged on the outer wall of the tower body 10. The cooling pipes 30 are distributed in a serpentine pattern near the riser pipe 21. The cooling pipes 30 have outlets 31 and inlets 32 at both ends. The outlets 31 and inlets 32 are installed inside the flanges 33 at both ends and extend to the outside of the tower body 10. The cooling pipes 30 are filled with cooling water and are immersed in concentrated sulfuric acid solution 12.
[0033] In the above scheme, cooling pipe 30 is immersed in concentrated sulfuric acid solution 12, and low-temperature cooling water flows through cooling pipe 30. The heat generated by the drying of sulfuric acid is transferred to the cooling water through heat exchange and carried out of the tower. The lower the temperature, the better the drying effect of concentrated sulfuric acid, and the lower the water content in the chlorine gas. This also effectively extends the service life of the PVC / FRP bubble cap tower and greatly extends the service life of downstream metal equipment using chlorine gas. The serpentine distribution of cooling pipe 30 increases the contact area with gas and liquid, improving the heat dissipation effect.
[0034] The preferred option is to use Hastelloy for the cooling pipe 30. Hastelloy is effectively resistant to corrosion from concentrated sulfuric acid and also has good thermal conductivity.
[0035] Priority Solution Reference Figure 1 and Figure 3 The PVC tray 20 has a limiting block 34 on its surface, and the cooling pipe 30 is secured to the limiting block 34. The limiting block 34 provides stable support and fixation for the cooling pipe 30. During the operation of the PVC tray 20, it prevents the cooling pipe 30 from shifting or shaking due to factors such as fluid flow, temperature changes, or external vibrations. The presence of the limiting block 34 effectively limits the range of movement of the cooling pipe 30, ensuring its stability in the predetermined position. By directly securing the cooling pipe 30 to the limiting block 34, the installation process is greatly simplified.
[0036] Further reference figures and Figure 3 One end of the reinforcing rib 15 contacts the inner wall of the tower body 10, while the other end of the reinforcing rib 15 is away from the inner wall of the tower body 10. In this further embodiment, having the other end of the reinforcing rib 15 away from the inner wall of the tower body 10 facilitates the cooling pipes 30 to bypass the other end of the reinforcing rib 15, thereby making the cooling pipes 30 symmetrically distributed around the reinforcing rib 15 as the central axis.
[0037] Further referenceFigure 2 The PVC tray 20 has a guide line 40 on its surface. The guide line 40 is trapezoidal, and the gas riser pipe 21 is installed on the guide line 40.
[0038] In a further implementation scheme, the outermost air riser pipe 21 is equidistant from the inside of the trapezoidal guide line 40, which is the position of each air riser pipe 21, and the air riser pipe 21 is set within the range of the trapezoidal guide line 40.
[0039] Further reference Figure 2 The PVC tray 20 also has a downcomer 13 on its surface, which is located on the guide line 40. A downcomer pipe 14 is installed on the downcomer 13. The downcomer pipe 14 is the channel for liquid to flow from the upper PVC tray 20 to the lower PVC tray 20. Liquid is transferred from one PVC tray 20 to the next through the downcomer pipe 14, ensuring continuous liquid flow within the tower.
[0040] Example 2:
[0041] refer to Figure 4 The cooling pipe 30 integrates a high-voltage pulse generator 51. One end of the water inlet 32 is connected to a three-way pipe 52. A high-voltage pulse generator 51 is installed at one branch end of the three-way pipe 52. The high-voltage pulse generator 51 is electrically connected to a controller 50.
[0042] In the above scheme, the controller 50 is timed to start the high-voltage pulse generator 51 every 8 hours for 10-30 minutes each time. By integrating the high-voltage pulse generator 51 into the cooling water circuit, the high-voltage pulse electric field is used to automatically remove sulfuric acid crystals from the outer wall of the coil every 8 hours, thereby avoiding affecting the heat transfer efficiency. This scheme has the advantages of non-contact treatment, no need to add chemical agents, environmental protection and high efficiency.
[0043] High-voltage pulse generator 51 principle: electrical breakdown effect: the high-voltage pulse electric field can generate an electrical breakdown effect inside sulfuric acid crystals, destroying their molecular structure, making them loose and easy to remove.
[0044] Electrochemical effect: High-voltage pulsed electric field can induce electrochemical effect, which changes the charge distribution and chemical properties on the surface of sulfuric acid crystals, making them easier to be washed away by water flow.
[0045] Shock wave effect: While generating electrical breakdown, the high-voltage pulsed electric field may also generate a shock wave effect, which physically impacts sulfuric acid crystals and further promotes their removal.
[0046] The specific implementation process of this utility model is as follows:
[0047] Cooling pipe 30 is immersed in concentrated sulfuric acid solution 12, and low-temperature cooling water flows through cooling pipe 30. The heat generated by the drying of sulfuric acid is transferred to the cooling water through heat exchange and carried out of the tower.
[0048] The controller 50 is set to start the high-voltage pulse generator 51 every 8 hours for 10-30 minutes each time. By integrating the high-voltage pulse generator 51 into the cooling water circuit, the high-voltage pulse electric field is used to automatically remove sulfuric acid crystals from the outer wall of the coil every 8 hours.
[0049] The above embodiments are merely exemplary models of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions can be made to this utility model within its substance and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.
[0050] In the description of this utility model, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached circle, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on this utility model.
[0051] In the description of this utility model, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between components; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
Claims
1. A cooling device for a blister PVC tray, comprising a tower body (10), wherein a PVC tray (20) is disposed within the tower body (10), characterized in that: The PVC tray (20) has a reinforcing rib plate (15) in the middle of its surface. Several air riser pipes (21) are symmetrically distributed at both ends of the reinforcing rib plate (15). A bubble cover (24) is installed on the air riser pipe (21), and a cooling component is installed near the bubble cover (24).
2. The cooling device for a blister PVC tray according to claim 1, characterized in that: The riser pipe (21) is arranged in a circular structure and distributed on the surface of the PVC tray (20).
3. The cooling device for a blister PVC tray according to claim 2, characterized in that: The surface of the PVC tray (20) is filled with concentrated sulfuric acid solution (12), and a sulfuric acid drain port (11) is installed below the PVC tray (20).
4. The cooling device for a blister PVC tray according to claim 3, characterized in that: The riser pipe (21) is provided with reinforcing ribs (22), which are arranged in a cross shape inside the riser pipe (21). A positioning shaft (23) is provided in the middle of the reinforcing ribs (22), and the bubble cover (24) passes through the positioning shaft (23) and covers the area around the riser pipe (21).
5. The cooling device for a blister PVC tray according to claim 2, characterized in that: The cooling assembly includes cooling pipes (30) and flanges (33). The flanges (33) are symmetrically arranged on the outer wall of the tower body (10). The cooling pipes (30) are distributed in a serpentine pattern near the riser pipe (21). The cooling pipes (30) have outlets (31) and inlets (32) at both ends. The outlets (31) and inlets (32) are installed inside the flanges (33) at both ends and extend to the outside of the tower body (10). The cooling pipes (30) are filled with cooling water and are immersed in concentrated sulfuric acid solution (12).
6. The cooling device for a blister PVC tray according to claim 5, characterized in that: The cooling pipe (30) is made of Hastelloy.
7. The cooling device for a blister PVC tray according to claim 6, characterized in that: The PVC tray (20) is provided with a limiting block (34) on its surface, and the cooling pipe (30) is stuck on the limiting block (34).
8. The cooling device for a blister PVC tray according to claim 7, characterized in that: One end of the reinforcing rib (15) contacts the inner wall of the tower body (10), and the other end of the reinforcing rib (15) is away from the inner wall of the tower body (10).
9. A cooling device for a blister PVC tray according to claim 8, characterized in that: The PVC tray (20) has a guide line (40) on its surface. The guide line (40) is trapezoidal. The gas riser (21) is installed on the guide line (40). The PVC tray (20) also has a downcomer (13) on its surface. The downcomer (13) is installed on the guide line (40). A downcomer pipe (14) is installed on the downcomer (13).
10. A cooling device for a blister PVC tray according to claim 6, characterized in that: The cooling pipe (30) integrates a high-voltage pulse generator (51). One end of the water inlet (32) is connected to a three-way pipe (52). A high-voltage pulse generator (51) is installed at one branch end of the three-way pipe (52). The high-voltage pulse generator (51) is electrically connected to a controller (50).