Anti-wall-flow structural member, filler assembly and mass transfer tower

Abstract

The utility model provides an anti-wall-flow structural member, a packing assembly and a mass transfer tower, the anti-wall-flow structural member comprises an anti-wall-flow ring surrounding a packing cylinder, and the anti-wall-flow ring is a thin-strip ring and comprises a main body and a bending part; the main body is used for keeping the packing cylinder into a whole, and the bent part comprises bent pieces which are distributed in the circumferential direction and extend upwards in an inclined mode; and the bending pieces incline towards the inner wall of the mass transfer tower and are used for elastically abutting against the tower wall, so that liquid flow on the tower wall can be guided to the filler through the bending parts. According to the anti-wall-flow structural member, the packing assembly comprising the anti-wall-flow structural member and the mass transfer tower comprising the anti-wall-flow structural member, the number of components of the anti-wall-flow structural member is reduced, the structure is simple, the non-deformability is improved, and the friction damage with the tower wall can be avoided or reduced. The packed cylinders are kept as a whole through the main body, so that the packed cylinders can be conveniently and integrally loaded into the mass transfer tower. And through the plurality of bulges, the contact area with the tower wall is increased, and the structural strength is also enhanced, so that the positioning effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical equipment, especially to a kind of anti-wall flow structural member, packing assembly and mass transfer tower. BACKGROUND

[0002] In mass transfer tower such as packing tower, liquid should be evenly distributed on the surface of packing after being sprayed from the top of the tower and fully contacted with the rising gas. However, the liquid will gradually flow to the wall of the tower when flowing under the action of gravity, which affects the separation effect of the packing in the center of the tower. This phenomenon is called wall flow. Wall flow can cause uneven distribution of gas and liquid and significantly reduce the mass transfer efficiency. Therefore, anti-wall flow devices need to be provided to prevent wall flow phenomenon.

[0003] In the prior art, some anti-wall flow devices are made of metal plate corrugations (i.e. packing) of different lengths and fixed into a cylindrical packing cylinder by fastening materials such as split wire mesh belt, stainless steel belt, positioning block and self-tapping screw. The wire mesh belt with a certain width is wrapped around the surface of the packing cylinder, the positioning block is fixed on the wire mesh belt by the self-tapping screw, and the self-tapping screw penetrates the wire mesh belt and connects with the packing. The stainless steel belt is wrapped around the circumferential surface of the packing cylinder between two wire mesh belts to enhance the connection strength. All the fastening materials are combined to form an anti-wall flow structural member (i.e. anti-wall flow device), thereby improving the separation and mass transfer functions of the product. However, this type of anti-wall flow device has the following disadvantages:

[0004] 1. Since the packing product itself has a certain flexibility, it is easy to produce slight deformation after being transported, packaged and transported. The anti-wall flow structural member for fixing the packing product will also be deformed. At the same time, there is a certain processing error in the manufacture of the container (i.e. packing tower) for installing the packing product. Therefore, due to deformation or processing error, friction is easy to occur between the anti-wall flow structural member and the inner wall of the container during installation, which causes scratches on the inner wall of the container.

[0005] 2. The existing anti-wall flow device includes wire mesh belt, stainless steel belt, packing buckle, positioning block and self-tapping screw, which has many elements and complex manufacturing process. Moreover, since the shape of the packing product is circular, the positioning block cannot completely fit the circular surface of the product, which is easy to loosen and rotate to rub the inner wall during installation.

[0006] 3. The positioning block needs to be confirmed according to the circular arc of the positioning block according to different tower diameters, but the positioning block is relatively small, and there is an error in processing the circular arc, so it is difficult for the arc of the positioning block to completely match the circular arc of the product.

[0007] 4. During the processing of wire mesh anti-wall flow plates, there may be unavoidable wire breakage at the cut position. In the application of fine chemical and air separation projects, this will have a certain impact on the final product. Broken wires may enter the product or block some small channels, affecting the product separation and mass transfer effect.

[0008] Some anti-wall flow devices are made into integrated structural components, such as CN213826613U, which uses outwardly protruding support bulges manufactured on steel strips to replace positioning blocks. Although this reduces the number of components, lowers the manufacturing difficulty, and avoids blockage caused by broken wires in the wire mesh, this type of anti-wall flow device has poor deformation resistance, lacks effective fixation of the packing cylinder, and is not convenient for the entire packing to be installed into the mass transfer tower. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the defects of existing anti-wall flow devices, such as poor resistance to deformation and inconvenience of packing being installed as a whole into the mass transfer tower, and to provide an anti-wall flow structural component, packing assembly and mass transfer tower.

[0010] The present invention solves the above-mentioned technical problems through the following technical solution:

[0011] A wall-flow prevention structure is used in a mass transfer tower. The wall-flow prevention structure includes a wall-flow prevention ring surrounding a packing cylinder. The wall-flow prevention ring is a thin strip ring, which includes a main body closely adhering to the surface of the packing cylinder and a bent portion connected to the upper side of the main body. The main body is used to keep the packing cylinder as a whole. The bent portion includes a plurality of bent pieces distributed circumferentially and extending obliquely upward. The bent pieces are inclined toward the inner wall of the mass transfer tower to elastically abut against the tower wall, so that the liquid flow on the tower wall can be guided to the packing through the bent portion.

[0012] In this design, the anti-wall flow structure uses a thin-band ring as the anti-wall flow ring, enhancing its flexibility and adapting to different arc-shaped packing surfaces. This improves its resistance to deformation, thereby avoiding or reducing frictional damage with the tower wall. The main body holds the packing cylinder as a single unit, facilitating its installation into the mass transfer tower. Several bent tabs provide support during installation, guiding the liquid towards the packing surface and preventing the anti-wall flow ring from directly adhering to the tower's inner wall. The bent tabs also elastically abut against the tower wall, facilitating installation into the mass transfer tower.

[0013] Preferably, the main body includes a plurality of circumferentially distributed and outwardly protruding protrusions, which are used to abut against the tower wall to achieve radial positioning of the packing cylinder, so as to keep the packing at the center of the mass transfer tower.

[0014] In the present scheme, when the anti-wall flow structure is installed in the tower, the protrusions can abut against the tower wall to achieve radial positioning of the packing cylinder to keep the packing in the center of the mass transfer tower, and the protrusions are used for positioning without increasing additional positioning blocks, reducing the number of components, and avoiding damage to the tower wall.

[0015] Preferably, the protrusion comprises a platform and a pyramid surrounding the platform, and the platform has an arc surface matching the tower wall to avoid scratching the tower wall.

[0016] In the present scheme, the protrusion forms a conical protrusion through the intermediate platform and the pyramid surrounding the platform, increases the contact area with the tower wall, and enhances the structural strength, thereby improving the positioning effect. The platform has an arc surface matching the tower wall, which can avoid scratching the tower wall.

[0017] Preferably, the bent piece protrudes radially beyond the protrusion, so that after the anti-wall flow ring is installed in the mass transfer tower, the bent piece that is elastically compressed cooperates with the protrusion to keep the bent piece inclined and guide the liquid flow to the packing.

[0018] In the present scheme, the above arrangement makes the protrusion abut against the tower wall when the bent piece is compressed more after the anti-wall flow ring is installed in the mass transfer tower, thereby assisting the bent piece to keep an inclined state, so as to ensure that the liquid flow can be guided to the packing. When the bent piece is not compressed too much, there can be a gap between the protrusion and the tower wall, and the bent piece still keeps a certain inclination, so that the liquid flow can be guided to the packing by the inclined bent piece.

[0019] Preferably, the height of the bent piece protruding radially beyond the bottom surface of the main body is greater than 2 times the height of the protrusion protruding beyond the bottom surface of the main body.

[0020] In the present scheme, through the above ratio arrangement, before the protrusion abuts against the tower wall when the anti-wall flow structure is installed in the tower, the bent piece has sufficient height to generate elastic force, ensuring that the bent piece has a large supporting force, and the bent piece will not be compressed too easily to bear the supporting force by the protrusion, so that the protrusion will not be flattened to lose the positioning effect.

[0021] Preferably, a fixing hole is further arranged between the two protrusions, and the anti-wall flow structure further comprises a screw, which is fixedly connected with the packing through the fixing hole.

[0022] In the present scheme, through the above fixing hole and screw, the anti-wall flow structure realizes fixed connection with the packing, thereby improving the overall structural strength.

[0023] Preferably, the screw is a countersunk screw, and the top surface of the countersunk screw is not higher than the surface of the main body after the countersunk screw is fixedly connected with the filler, so as to avoid scratching the tower wall by the exposed screw.

[0024] In the scheme, the countersunk screw and the height setting are adopted, so as to avoid the exposed screw directly contacting the tower wall and scratching the tower wall.

[0025] Preferably, the thin strip ring is formed by overlapping the two end portions of the long strip after the long strip is used to tighten the filler, and resistance welding is performed on the overlapping portions.

[0026] Preferably, the plurality of protrusions are equidistantly arranged in the circumferential direction.

[0027] In the scheme, the plurality of protrusions are equidistantly arranged, which is beneficial to uniform force positioning.

[0028] Preferably, the thin strip ring is a stainless steel strip, and the thickness of the stainless steel strip is 0.2 mm.

[0029] In the scheme, the thin strip ring is a stainless steel strip, which has a good elastic supporting effect. The stainless steel strip with a thickness of 0.2 mm is a preferred material, which has good strength and flexibility and is convenient to process.

[0030] Preferably, the height of the protrusion relative to the bottom surface of the main body is 3 mm.

[0031] In the scheme, the protrusion has the above height, so that the protrusion is not too low to lose the positioning effect, and is not too high to affect the structural strength of the protrusion.

[0032] Preferably, the anti-wall-flow structure includes a plurality of thin strip rings arranged at intervals.

[0033] In the scheme, the plurality of thin strip rings arranged at intervals increase the fixing strength and positioning strength of the filler.

[0034] Preferably, the protrusions on two adjacent thin strip rings are arranged at intervals in the axial direction of the thin strip ring.

[0035] In the scheme, the above arrangement improves the contact surface covered by the protrusion in the circumferential direction. When the filler product is deformed or the inner wall of the tower is not completely circular, even if the protrusion cannot abut against the tower wall at a certain position, the protrusions on other thin strip rings can abut against the tower wall at another position, so that the positioning effect is ensured.

[0036] A filler assembly includes the anti-wall-flow structure as described above and a filler cylinder surrounded by the anti-wall-flow rings of the anti-wall-flow structure.

[0037] In the present scheme, the packing assembly improves the anti-deformation ability through the anti-wall flow structure, avoids or reduces the friction damage with the tower wall; the packing cylinder is kept as a whole through the main body, which facilitates the overall installation of the packing cylinder into the mass transfer tower. The anti-wall flow structure is installed into the tower through the bending pieces, which provides support, guides the liquid to the surface of the tower packing, and avoids the direct adhesion of the anti-wall flow ring to the inner wall of the tower.

[0038] A mass transfer tower, wherein the anti-wall flow structure is installed in the tower.

[0039] In the present scheme, the packing assembly improves the anti-deformation ability through the anti-wall flow structure, avoids or reduces the friction damage with the tower wall; the packing cylinder is kept as a whole through the main body, which facilitates the overall installation of the packing cylinder into the mass transfer tower. The anti-wall flow structure is installed into the tower through the bending pieces, which provides support, guides the liquid to the surface of the tower packing, and avoids the direct adhesion of the anti-wall flow ring to the inner wall of the tower.

[0040] The positive progress effect of the present utility model lies in that: the anti-wall flow structure, the packing assembly and the mass transfer tower improve the anti-deformation ability, avoid or reduce the friction damage with the tower wall; the packing cylinder is kept as a whole through the main body, which facilitates the overall installation of the packing cylinder into the mass transfer tower. The anti-wall flow structure is installed into the tower through the bending pieces, which provides support, guides the liquid to the surface of the tower packing, and avoids the direct adhesion of the anti-wall flow ring to the inner wall of the tower. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is an assembly structure diagram of the anti-wall flow structure and the packing of the embodiment 1 of the present utility model.

[0042] Figure 2 It is a three-dimensional structure diagram of the anti-wall flow ring of the embodiment 1 of the present utility model.

[0043] Figure 3 It is a structure diagram of the anti-wall flow ring of the embodiment 1 of the present utility model when it is unfolded, wherein the omitted length is represented by a broken line on the right side.

[0044] Figure 4 It is a cross-sectional structure diagram of the bending piece of the anti-wall flow ring of the embodiment 1 of the present utility model after bending.

[0045] Figure 5 It is a structure diagram of the screw of the embodiment 1 of the present utility model.

[0046] BRIEF DESCRIPTION OF DRAWINGS

[0047] Anti-wall flow structure 100

[0048] Packing 200

[0049] Anti-wall flow ring 300

[0050] Main body 310

[0051] Base plate 320

[0052] Protrusion 330

[0053] Platform 331

[0054] Nucleus 332

[0055] Bent part 340

[0056] Bent piece 350

[0057] Cutout 351

[0058] Fixing hole 360

[0059] Screw 400

[0060] Thin band ring entering direction A of the packing tower DETAILED DESCRIPTION

[0061] The preferred embodiments are described below in conjunction with the accompanying drawings.

[0062] Embodiment 1

[0063] As Figure 1 shown, and in conjunction with Figure 2 and Figure 3 shown, the embodiment provides an anti-wall flow structure 100 for use in a mass transfer tower to prevent liquid distributed on the surface of the packing 200 in the tower from vertically flowing downward along the tower wall. The anti-wall flow structure 100 includes an anti-wall flow ring 300 surrounding the cylindrical packing 200. In this embodiment, the mass transfer tower to which the anti-wall flow structure 100 is applied is a packing tower, and the packing 200 in the packing tower is a disc-shaped packing cylinder composed of a plurality of metal sheet corrugations of different lengths, also known as a packing disc. In use, the packing 200 and the anti-wall flow structure 100 are assembled outside the tower and then loaded into the packing tower as a whole. It should be noted that the packing tower is prior art, and thus, its specific structure is not described here.

[0064] The anti-wall flow ring 300 is a thin band ring, which includes a main body 310 and a bent part 340. The main body 310 closely adheres to the circumferential surface of the cylindrical packing 200 to maintain the cylindrical packing 200 as a whole. The bent part 340 is located at the end of the installation direction A of the thin band ring entering the packing tower, is connected to the upper side of the main body 310, and is processed with a plurality of spaced-apart bent pieces 350 in the circumferential direction. The bent pieces 350 are inclined toward the inner wall of the mass transfer tower to elastically abut against the tower wall of the mass transfer tower, so that the liquid flow on the tower wall can be guided to the packing through the bent part 340.

[0065] Specifically, the thin strip ring of the present embodiment is a 0.2mm thick long strip-shaped stainless steel thin strip, and when processed, a plurality of bending pieces 350 and protrusions 330 are punched out by a mold, the plurality of protrusions 330 are distributed along the circumference and spaced apart on the bottom plate 320, the plurality of protrusions 330 and the bottom plate 320 constitute the main body 310, which is located at the lower part of the thin strip ring. The plurality of bending pieces 350 constitute an overall annular bending part 340, which is connected to the upper side of the main body 310, and there is a small notch 351 between the bending pieces 350 and the bending pieces 350, which forms a gap, facilitating the bending of each bending piece 350 at a set angle. After bending, all the bending pieces 350 constitute a structure in the form of a trumpet mouth. Before the bending piece 350 is bent (i.e. when the thin strip ring is flattened), the height of the bending piece 350 relative to the bending edge (i.e. the junction line between the bending piece 350 and the main body) is 10mm, and the bending piece 350 is bent at an angle of 45°, as shown in Figure 4 After bending, the height of the bending piece 350 relative to the bottom plate 320 is about 7mm, and the height of the protrusion 330 punched into shape relative to the bottom plate 320 is 3mm, so that the height of the bending piece 350 relative to the bottom plate 320 is greater than the height of the protrusion 330 relative to the bottom plate 320. After the long strip-shaped stainless steel thin strip is completed by punching and forming, it is wrapped around the cylindrical filler 200, the cylindrical filler 200 is tightly bound, and then there is a partial overlap at both ends, and resistance welding is used at the overlapping part to connect it into a whole. In other embodiments, the number and height of the bending pieces 350 can also be adjusted as needed.

[0066] The anti-wall-flow structure 100 is made of a thin stainless steel strip to form a thin strip ring, which reduces the thickness but enhances the flexibility, can adapt to the surface of fillers 200 of different arcs, improves the anti-deformation ability, thereby avoiding or reducing the friction damage with the tower wall. The cylindrical filler 200 is bound and maintained as a whole by the main body 310, which facilitates the whole filler 200 to be loaded into the mass transfer tower. The plurality of bending pieces 350 provided above provide support for the installation of the anti-wall-flow structure 100 into the tower, on the one hand, guiding the liquid to the surface of the filler 200 in the tower, rather than vertically downward along the tower wall affecting the separation effect; on the other hand, avoiding the anti-wall-flow ring 300 directly sticking to the inner wall of the tower; and the bending piece 350 has a certain elasticity, which elastically abuts against the tower wall, facilitating the loading into the mass transfer tower.

[0067] In such structure, when the anti-wall flow structure 100 is installed and the bending piece 350 is compressed more, the protrusions 330 distributed circumferentially and protruding outward can abut against the tower wall to realize radial positioning of the cylindrical packing 200, so as to keep the packing 200 in the central position of the mass transfer tower. The protrusions 330 directly formed on the thin strip ring by stamping can be used for positioning without adding additional positioning blocks, so that the number of components is reduced, the structure is simple, and the tower wall can be better protected from damage.

[0068] The protrusion 330 includes a platform 331 for abutting against the tower wall and a cone 332 surrounding the platform 331, forming a tapered protrusion structure. The platform 331 has an arc surface matched with the tower wall to avoid scratching the tower wall. Since the surface of the platform 331 is an arc surface, the contact between the platform 331 and the tower wall is surface or line contact, which increases the contact area compared with the point contact in the prior art. The cone structure can provide better support for the platform 331, which is conducive to enhancing the structural strength and improving the positioning effect.

[0069] The height of the bending piece 350 relative to the bottom plate 320 is greater than the height of the protrusion 330 relative to the bottom plate 320, that is, the bending piece 350 protrudes more in the radial direction than the protrusion 330. Since the bending pieces with different materials, thicknesses or inclination angles have different elastic forces, the bending piece 350 can be elastically compressed to different degrees after the anti-wall flow ring 300 is installed in the mass transfer tower. When the bending piece 350 is compressed more, the protrusion 330 can abut against the tower wall to assist the bending piece 350 to maintain the inclined state, so as to ensure that the liquid flow can be guided to the packing 200. When the bending piece 350 has good strength and is not compressed too much, the bending piece 350 can still maintain a certain inclination even if it is compressed, and the liquid flow can be guided to the packing 200 by the inclined bending piece 350. At this time, there can be a gap between the protrusion 330 and the tower wall. Therefore, the bending piece 350 protrudes more in the radial direction than the protrusion 330, which ensures that the bending piece 350 has good support force in any case and maintains a certain inclination, so that the liquid flow can always be guided to the packing 200. If the height of the bending piece 350 in the radial direction is lower than that of the protrusion 330, when the bending piece 350 is compressed more, the protrusion 330 has to bear the main support force and can be flattened to lose the positioning effect.

[0070] Preferably, in this embodiment, after bending, the height of the bent piece 350 relative to the base plate 320 is approximately 7mm, while the height of the stamped protrusion 330 relative to the base plate 320 is 3mm. Therefore, the height of the bent piece 350 relative to the base plate 320 is greater than twice the height of the protrusion 330 relative to the base plate 320. In other embodiments, even if the ratio is not twice or more, the height of the bent piece 350 relative to the base plate 320 is at least greater than the height of the protrusion 330 relative to the base plate 320, and cannot be less than the height of the protrusion 330 relative to the base plate 320, to ensure that the bent piece 350 has an effective supporting function.

[0071] In this embodiment, a ratio of 2 times or more is preferred. This ensures that when the anti-wall flow structure 100 is installed into the tower, before the protrusion 330 abuts against the tower wall, the bending piece 350 has sufficient height to generate elastic force, thus ensuring that the bending piece 350 has a large supporting force. The bending piece 350 will not be easily compressed, and the supporting force will be borne by the protrusion 330. In this way, the protrusion 330 will not be flattened and lose its positioning function.

[0072] like Figure 2 and Figure 5 As shown, a fixing hole 360 ​​is provided between the two protrusions 330. The anti-wall flow structure 100 also includes a screw 400, which passes through the fixing hole 360 ​​and is fixedly connected to the packing 200. Through the fixing hole 360 ​​and the screw 400, the anti-wall flow structure 100 is fixedly connected to the packing 200, thereby improving the overall structural strength.

[0073] In this embodiment, screw 400 is a countersunk screw 400. After the countersunk screw 400 is fixedly connected to the packing 200, the height of the countersunk screw 400 relative to the base plate 320 is not higher than the height of the protrusion 330 relative to the base plate 320. More preferably, the top surface of the countersunk screw 400 is submerged in the fixing hole 360, so that the top surface of the countersunk screw 400 does not protrude from the surface of the main body. By using countersunk screws 400 and the above-mentioned height setting, the exposed screw 400 is prevented from directly contacting the tower wall and scratching it. It should be noted that in other embodiments, screw 400 can also be other types of self-tapping screws 400. Since the steel strip is relatively thin, when the self-tapping screw 400 is screwed in, it may partially compress the steel strip, so that the screw 400 will not be completely exposed. This can also reduce the height of the screw 400, as long as its exposed height is not higher than the height of the protrusion 330. Furthermore, the main body 310 can also be fixed to the cylindrical packing 200 as a whole using other fixing methods, and is not limited to the fixing method using screws.

[0074] As described above, in this embodiment, the thin strip ring is made of stainless steel with a thickness of 0.2 mm. It should be noted that in other embodiments, the material of the thin strip ring is not limited to stainless steel. Depending on the application, the thin strip ring can also be made of non-metallic materials, and its thickness can be selected according to different material and strength requirements. However, compared to other materials, the stainless steel strip used in this embodiment provides better elastic support, is easier to process, and has lower costs; while using non-metallic materials such as plastic results in lower strength, more complex processes, and higher costs. The 0.2 mm thickness of the stainless steel strip is the preferred material thickness, providing both good strength and flexibility, and facilitating processing.

[0075] like Figure 3 As shown, several protrusions 330 are evenly spaced in the circumferential direction, which facilitates uniform positioning force. Specifically, in this embodiment, the distance between the protrusions 330 is 120mm.

[0076] In this embodiment, the height of the protrusion 330 relative to the base plate 320 is 3mm. This height ensures that the protrusion 330 is neither too low to lose its positioning function nor too high to affect its structural strength. Similarly, the height of the protrusion 330 can be adjusted as needed.

[0077] like Figure 1 As shown, the height of the packing disc in this embodiment is about 0.2m, and it is equipped with two thin strip rings that are spaced apart. By increasing the number of thin strip rings and spacing them apart, the fixing strength and positioning strength of the connecting packing 200 are increased.

[0078] In this design, the protrusions 330 on adjacent thin strip rings are staggered axially. This staggered arrangement increases the contact area covered by the protrusions 330 on the circumference. When the packing material deforms or the inner wall of the tower is not perfectly circular, even if a protrusion 330 cannot abut against the tower wall at one location, protrusions 330 on other thin strip rings can still abut against the tower wall at another location, ensuring the positioning effect. For example, when the packing material deforms or the inner wall of the tower is not perfectly circular, at a certain location (e.g., position X), the protrusion 330 may not be able to abut against the inner wall of the tower. In this case, if the protrusions 330 on the upper and lower thin strip rings are correspondingly arranged (e.g., both are located at the corresponding position X), instead of being staggered, then neither of the protrusions 330 on the upper and lower thin strip rings can abut against the inner wall of the tower, which is detrimental to the positioning effect. However, if the protrusions 330 on the upper and lower thin strip rings are axially offset, then although the protrusions 330 of the upper ring cannot abut against the inner wall of the tower at position X, the protrusions 330 of the lower ring can abut against the inner wall of the tower at other positions. This ensures that one or a few protrusions 330 can play a positioning role, which is beneficial to the reliability of positioning.

[0079] Embodiment 2

[0080] The embodiment also provides a packing assembly, which comprises the anti-fouling structure 100 of embodiment 1 and the cylindrical packing 200 surrounded by the anti-fouling ring. The packing assembly improves the anti-deformation ability by adopting the anti-fouling structure 100 of embodiment 1, and avoids or reduces the frictional damage with the tower wall. The anti-fouling structure 100 and the cylindrical packing 200 are kept as a whole by the main body 310, which facilitates the assembly of the anti-fouling structure 100 and the cylindrical packing 200 into the mass transfer tower. The anti-fouling structure 100 is supported when installed into the tower by the bending pieces 350, which guides the liquid to the surface of the packing in the tower, and avoids the anti-fouling ring 300 directly sticking to the inner wall of the tower.

[0081] Embodiment 3

[0082] The embodiment provides a mass transfer tower, which is specifically a packing tower, and the packing tower is installed with the packing assembly of embodiment 2. Of course, the anti-fouling structure 100 of embodiment 1 or the packing assembly of embodiment 2 is not limited to only being used in the packing tower, but also can be used in other mass transfer towers which need anti-fouling effect.

[0083] The mass transfer tower reduces the number of components by adopting the packing assembly of embodiment 2, and has a simple structure. The thickness is reduced, the flexibility is enhanced, the packing 200 surface of different arcs can be adapted, the anti-deformation ability is improved, and thus the frictional damage with the tower wall is avoided or reduced. The cylindrical packing 200 is bundled and kept as a whole by the main body 310, which facilitates the assembly of the packing 200 into the mass transfer tower. The anti-fouling structure 100 is supported when installed into the tower by the bending pieces 350, which guides the liquid to the surface of the packing 200 in the tower, and avoids the anti-fouling ring 300 directly sticking to the inner wall of the tower. The contact area with the tower wall is increased by the protrusions 330, and the structural strength is also enhanced, and thus the positioning effect is improved.

[0084] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A wall-flow prevention structure for use in a mass transfer tower, the wall-flow prevention structure comprising a wall-flow prevention ring surrounding a packing cylinder, characterized in that, The anti-wall flow ring is a thin strip ring, which includes a main body that closely adheres to the cylindrical surface of the packing and a bent portion connected to the upper side of the main body. The main body is used to keep the packing cylinder as a whole. The bent portion includes a number of bent pieces that are distributed circumferentially and extend obliquely upward. The bent pieces are inclined toward the inner wall of the mass transfer tower to elastically abut against the tower wall of the mass transfer tower, so that the liquid flow on the tower wall can be guided to the packing through the bent portion. The main body includes several protrusions distributed circumferentially and protruding outwards. The protrusions are used to abut against the tower wall to achieve radial positioning of the packing and keep the packing at the center of the mass transfer tower. A fixing hole is provided between the two protrusions, and the anti-wall flow structure also includes a screw, which passes through the fixing hole and is fixedly connected to the packing.

2. The anti-wall flow structural component as described in claim 1, characterized in that, The protrusion includes a platform and a cone surrounding the platform, the platform having an arcuate surface that matches the tower wall to avoid scratching the tower wall.

3. The anti-wall flow structural component as described in claim 1, characterized in that, The bent piece protrudes radially from the protrusion so that after the anti-wall flow ring is installed in the mass transfer tower, the elastically compressed bent piece cooperates with the protrusion to keep the bent piece tilted and guide the liquid flow to the packing.

4. The anti-wall flow structural component as described in claim 1, characterized in that, The screw is a countersunk screw. After the countersunk screw is fixedly connected to the packing, the top surface of the countersunk screw is not higher than the surface of the main body to avoid the countersunk screw scratching the tower wall.

5. The anti-wall flow structural component as described in claim 1, characterized in that, The thin strip ring is formed by binding the filler tightly with a long strip of thin strip, overlapping at both ends, and resistance welding at the overlapping part to form the anti-wall flow ring.

6. The anti-wall flow structural component as described in claim 1, characterized in that, The anti-wall flow structure includes a plurality of thin strip rings spaced apart, and the protrusions on two adjacent thin strip rings are offset in the axial direction of the thin strip rings.

7. A packing assembly, characterized in that, The packing assembly includes a wall-blocking structure as described in any one of claims 1-6 and a packing cylinder fixed around a wall-blocking ring of the wall-blocking structure.

8. A mass transfer tower, characterized in that, The mass transfer tower is equipped with the packing assembly as described in claim 7.

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