Packed distillation tower for producing industrial alkane cleaning agents

Abstract

A packed fractionation tower for producing industrial alkane cleaning agents, relating to the field of petrochemical equipment, includes a tower body and packing. The packing is located inside the tower body and includes bulk packing and corrugated packing. The bulk packing is positioned above the corrugated packing. The corrugated packing is formed by spirally winding a strip of wire mesh in a plane. Manholes are provided on the tower body corresponding to the corrugated packing, and the strip of wire mesh is introduced into the tower body through the manholes and spirally wound inside the tower body. This invention designs the corrugated packing into a coiled structure, allowing it to be disassembled and replaced after the tower body is installed. This eliminates the need for expensive materials to ensure the long service life of the corrugated packing, significantly reducing its cost. After scaling occurs, the corrugated packing can be removed from the tower body for thorough cleaning, thereby completely restoring the fractionation tower's production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of petrochemical industrial equipment, and particularly relates to a packed fractionation tower for producing industrial alkane cleaning agents. Background Technology

[0002] The fractionation tower is a key piece of equipment in the production of alkane cleaning agents. Its main function is to separate the alkane cleaning agent from the mixture by utilizing the boiling point differences between different components in the mixture. The fractionation tower is equipped with packing material, which serves as the basic component for gas-liquid contact and mass transfer. The liquid flows from top to bottom in a film on the surface of the packing material, while the gas flows from bottom to top in a continuous phase, interacting with the liquid in a progressive manner, thus carrying out mass and heat transfer between the gas and liquid phases.

[0003] In fractionation towers, packing materials include bulk packing and corrugated packing (integrated packing). In existing technology, corrugated packing is a monolithic structure. Because the outer diameter of the corrugated packing is close to the inner diameter of the fractionation tower body, it must be installed inside the tower body before installation on the ground. Furthermore, the corrugated packing cannot be replaced during subsequent operation. In this case, expensive, high-performance materials must be used to ensure the service life of the corrugated packing. Additionally, after long-term use, scaling will occur on the packing, requiring cleaning; otherwise, the production efficiency of the fractionation tower will be severely affected. However, fractionation towers typically have multiple layers of corrugated packing stacked inside, which cannot be removed, making thorough cleaning impossible. Summary of the Invention

[0004] The purpose of this invention is to provide a packed fractionation tower for producing industrial alkane cleaning agents, which allows the corrugated packing to be replaced and removed from the fractionation tower for thorough cleaning, thereby maximizing the recovery of the fractionation tower's production efficiency.

[0005] The technical problem solved by the present invention is achieved by the following technical solution: The present invention provides a packed fractionation tower for producing industrial alkane cleaning agents, comprising a tower body and packing, wherein the packing is located inside the tower body and the packing includes bulk packing and corrugated packing;

[0006] Bulk packing is located above corrugated packing;

[0007] The corrugated packing is formed by spirally winding strip wire mesh in a plane;

[0008] Manholes are provided on the tower body corresponding to the corrugated packing. The strip wire mesh is introduced into the tower body through the manholes and spirally coiled inside the tower body.

[0009] As a preferred embodiment, the tower body is provided with a rotatable tray, and a fixing post for fixing the strip wire mesh is provided in the center of the tray. When the strip wire mesh is coiled, the end of the strip wire mesh is fixed on the fixing post, and then the tray is driven to rotate, so that the strip wire mesh is coiled on the tray.

[0010] As a preferred embodiment, the strip mesh is mainly composed of a planar wire mesh strip and a zigzag wire mesh strip. The planar wire mesh strip and the zigzag wire mesh strip are connected at the folded edge of the zigzag wire mesh strip. After connection, a continuously arranged triangular prism-shaped space A is formed between the planar wire mesh strip and the zigzag wire mesh strip as a medium channel.

[0011] Between two adjacent loops of wire mesh, a continuous arrangement of triangular prism-shaped spaces B is formed, which also serve as medium channels.

[0012] As a preferred embodiment, the length direction of each of the triangular prism-shaped spaces A forms a 45-degree angle with the upper and lower end faces of the corrugated packing.

[0013] As a preferred embodiment, the edge of the pallet is machined with an external gear ring, and the tower body is provided with a gear that meshes with the external gear ring. In use, power is input to the gear through a portable power tool to make the gear rotate. The high speed and low torque rotation of the gear is converted into the low speed and high torque rotation of the pallet, thereby driving the pallet to rotate.

[0014] As a preferred embodiment, a lifting plate is placed on the upper side of the tray. The lifting plate has the same diameter as the tray, and the fixing column can also be installed in the center of the lifting plate. The lifting plate and the tray cannot rotate relative to each other.

[0015] The fixing posts on the tray are detachably connected to the tray.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention employs a special strip-shaped wire mesh composed of planar wire mesh and zigzag wire mesh, and uses this special strip-shaped wire mesh to spirally coil to form a novel corrugated packing. The advantages of this corrugated packing are as follows:

[0018] 1) The corrugated packing is designed as a coiled structure, which allows it to be disassembled after the tower body is installed, thus enabling the replacement of the corrugated packing. In this way, there is no need to use expensive materials to make the corrugated packing to ensure its ultra-long service life, thereby greatly reducing the cost of the corrugated packing.

[0019] 2) After the corrugated packing becomes scaled, it can be removed from the tower body to thoroughly clean the corrugated packing and thus completely restore the production efficiency of the fractionation tower.

[0020] 3) In corrugated packing, the uniformity of the internal media channel distribution has a significant impact on production efficiency. In the prior art, corrugated packing is composed of stacked wire mesh plates with a shape similar to the aforementioned zigzag wire mesh belt. The uniformity of the internal media channel distribution can be guaranteed. However, if the existing wire mesh plates are directly extended to form the aforementioned strip wire mesh, the wire mesh plates are prone to expansion and contraction under stress, and the shape and size of the media channels formed between adjacent wire mesh plates are inconsistent, making it impossible to guarantee the uniformity of the channel distribution.

[0021] In this invention, a special strip-shaped wire mesh composed of planar wire mesh and zigzag wire mesh is used. This strip-shaped wire mesh has the following advantages:

[0022] First, after the planar wire mesh belt and the zigzag wire mesh belt are combined, a continuous arrangement of triangular prism-shaped spaces A is formed between the planar wire mesh belt and the zigzag wire mesh belt. A continuous arrangement of triangular prism-shaped spaces B is formed between two adjacent rings of wire mesh. In most spaces inside the corrugated packing, except for the very center, the dimensions of triangular prism-shaped spaces A and B are highly consistent, ensuring the uniformity of the distribution of media channels inside the corrugated packing. This is beneficial for the material to have sufficient contact and heat exchange on the surfaces of the planar wire mesh belt and the zigzag wire mesh belt. Thus, while adopting a coiled structure, the uniformity of the distribution of media channels inside the corrugated packing is ensured.

[0023] Secondly, the combination of planar wire mesh and zigzag wire mesh gives the triangular prism-shaped space A a strong stability, making the wire mesh less prone to stretching and deformation. This further ensures the uniformity of the medium channel distribution within the corrugated packing and improves the structural strength of the corrugated packing.

[0024] 2. This invention creatively incorporates a lifting plate above the tray. During use, both the tray and the lifting plate can be wound with strip-shaped wire mesh, allowing multiple layers of corrugated packing to be inserted into the tower body through the manhole. Specifically:

[0025] When installing corrugated packing, first fix the ends of the wire mesh strip to the fixed post in the center of the lifting platform. Then rotate the platform, causing it to rotate and the wire mesh strip is wound around the platform, forming a layer of corrugated packing. Next, use external force (hoisting or lifting) to raise the lifting platform 15, creating space for winding the wire mesh strip on the platform 8. Then, install the fixed post in the center of the platform, fix the ends of the wire mesh strip to the post, and then rotate the platform to wind the wire mesh strip around it, forming another layer of corrugated packing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 yes Figure 1 A schematic diagram of the connection structure between the middle tray and the tower body.

[0028] Figure 3 This is a schematic diagram of the structure of a planar wire mesh belt.

[0029] Figure 4 This is a schematic diagram of the structure of a strip wire mesh.

[0030] Figure 5 This is a schematic diagram of another embodiment of the present invention.

[0031] Figure 6 yes Figure 5 A schematic diagram of the structure of the middle tray.

[0032] Figure 7 yes Figure 6 Top view.

[0033] Figure 8 yes Figure 5 A schematic diagram of the structure of the lifting plate.

[0034] Figure 9 yes Figure 8 Top view.

[0035] Figure 10 This is a partial structural diagram of the coiled wire mesh.

[0036] In the diagram, 1. Tower body, 2. Demister, 3. Manhole, 4. Primary liquid distributor, 5. Bulk packing, 6. Secondary liquid distributor, 7. Corrugated packing, 8. Tray, 9. Support ring, 10. Fixed column, 11. Flat wire mesh belt, 12. Zigzag wire mesh belt, 13. Folded edge, 14. Triangular prism space A, 15. Lifting plate, 16. Roller, 17. Triangular prism space B. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] Example 1: As Figure 1 As shown, this embodiment includes a tower body 1 and packing material. The packing material is located inside the tower body 1 and includes bulk packing 5 and corrugated packing 7. A primary liquid distributor 4 is disposed above the bulk packing 5, a secondary liquid distributor 6 is disposed above the corrugated packing 7, and a demister 2 is disposed at the top of the internal space of the tower body 1. The above are existing structures in the prior art and will not be described in detail here.

[0039] like Figure 1 As shown, in this embodiment, the bulk packing 5 is located above the corrugated packing 7.

[0040] like Figure 1As shown, the corrugated packing 7 is formed by spirally winding a strip of wire mesh in a plane; a manhole 3 is provided on the tower body 1 corresponding to the corrugated packing 7, and the strip of wire mesh is introduced into the tower body 1 through the manhole 3 and spirally wound inside the tower body 1. By designing the corrugated packing 7 in a spirally wound form, the corrugated packing 7 can be directly installed into the tower body 1 through the manhole 3, and can be quickly removed from the manhole 3 for replacement or cleaning.

[0041] like Figure 1 , 2 As shown, in this embodiment, a support ring 9 for mounting the tray 8 is fixedly installed on the inner side of the tower body 1. A set of rollers 16 for supporting the tray 8 is installed on the upper side of the support ring 9, and the tray 8 is placed above the rollers 16. A fixing post 10 for fixing the strip wire mesh is provided in the center of the tray 8. When winding the strip wire mesh, the end of the strip wire mesh is fixed on the fixing post 10, and then the tray 8 is driven to rotate, so that the strip wire mesh is wound on the tray 8. It should be noted that during the winding process of the strip wire mesh, a certain pre-tension force needs to be applied to the strip wire mesh to ensure tight winding.

[0042] like Figure 3 , 4 As shown in Figure 10, the strip mesh mainly consists of a flat wire mesh strip 11 and a zigzag wire mesh strip 12. The flat wire mesh strip 11 and the zigzag wire mesh strip 12 are connected at the folded edge 13 of the zigzag wire mesh strip 12. After connection, a continuous arrangement of triangular prism-shaped spaces A14 is formed between the flat wire mesh strip 11 and the zigzag wire mesh strip 12. In addition, after the strip mesh is spirally wound on the tray 8, a continuous arrangement of triangular prism-shaped spaces B17 is also formed between two adjacent turns of the strip mesh. This ensures that the corrugated packing 7 formed after spiral winding is filled with triangular prism-shaped spaces A14 and B17 of uniform size and height. This facilitates sufficient contact and heat exchange of materials on the surfaces of the flat wire mesh strip 11 and the zigzag wire mesh strip 12, and fully ensures the uniformity of physical changes throughout the corrugated packing 7.

[0043] Between two adjacent rings of wire mesh, a continuous arrangement of triangular prism-shaped spaces B17 is formed. Compared with the diameter of the corrugated packing, the cross-sectional dimensions of the triangular prism-shaped spaces A14 and B17 are relatively small, which makes the two adjacent rings of planar wire mesh 11 nearly parallel. Therefore, the cross-sectional dimensions of the triangular prism-shaped spaces A14 and B17 are very close.

[0044] In corrugated packing 7, the uniformity of the distribution of internal media channels has a significant impact on production efficiency. In the prior art, corrugated packing 7 is composed of stacked wire mesh plates with a shape similar to the zigzag wire mesh belt 12, which can ensure the uniformity of the distribution of internal media channels. However, if the wire mesh plates in the prior art are directly extended to form the strip-shaped wire mesh and coiled, the wire mesh plates are prone to expansion and contraction under stress, and the shape and size of the media channels formed between adjacent wire mesh plates are inconsistent, making it impossible to guarantee the uniformity of the distribution of the channels.

[0045] In this invention, a special strip-shaped wire mesh composed of a planar wire mesh strip 11 and a zigzag wire mesh strip 12 is used. This strip-shaped wire mesh has the following advantages:

[0046] First, such as Figure 10 As shown, after the planar wire mesh belt 11 and the zigzag wire mesh belt 12 are combined, a continuous arrangement of triangular prism-shaped spaces A14 is formed between the planar wire mesh belt 11 and the zigzag wire mesh belt 12. A continuous arrangement of triangular prism-shaped spaces B17 is formed between two adjacent rings of wire mesh. In most spaces inside the corrugated packing 7, except for the very center, the dimensions of the triangular prism-shaped spaces A14 and B17 are consistent, ensuring the uniformity of the distribution of the medium channels inside the corrugated packing 7. This is beneficial for the material to have sufficient contact and heat exchange on the surfaces of the planar wire mesh belt 11 and the zigzag wire mesh belt 12, thus ensuring the uniformity of the distribution of the medium channels inside the corrugated packing while adopting a coiled structure.

[0047] Secondly, the combination of the planar wire mesh 11 and the zigzag wire mesh 12 gives the triangular prism-shaped space A14 a strong stability, making the wire mesh less prone to stretching and deformation, further ensuring the uniformity of the medium channel distribution within the corrugated packing 7, and also improving the structural strength of the corrugated packing 7.

[0048] In this embodiment, the length direction of each of the triangular prism-shaped spaces A14 is at a 45-degree angle to the upper and lower end faces of the corrugated packing 7. This design can effectively slow down the speed at which the material passes through the corrugated packing 7, which is conducive to the material making full contact within the corrugated packing 7, thereby improving production efficiency.

[0049] In implementation, various conventional methods can be used to rotate the tray 8, such as manual rotation, electric rotation, or adding a speed reduction mechanism to save effort. In this embodiment, the tray 8 is rotated using the following method: the edge of the tray 8 is machined with an external gear ring, and the tower body 1 is equipped with a gear that meshes with the external gear ring. During use, power is input to the gear using a portable power tool (e.g., a hand drill), causing the gear to rotate. The high-speed, low-torque rotation of the gear is converted into low-speed, high-torque rotation of the tray 8, thereby driving the tray 8 to rotate. It is important to note that after the strip of wire mesh is wound, the tray 8 needs to be locked to prevent it from rotating in the opposite direction.

[0050] Working principle:

[0051] When the corrugated packing 7 needs to be replaced or cleaned, first open the manhole 3 corresponding to the corrugated packing 7, then release the lock on the tray 8 to allow it to rotate, and then lead out the end of the strip wire mesh constituting the corrugated packing 7 from the manhole 3, and wind the led-out strip wire mesh onto a spool. When installing new or cleaned corrugated packing 7 into the tower body 1, fix the end of the strip wire mesh constituting the corrugated packing 7 to the fixing post 10 on the tray 8, and then drive the tray 8 to rotate, so that the strip wire mesh is wound onto the tray 8. After winding, lock the tray 8, and then seal the manhole 3.

[0052] Example 2: Figure 5-9 As shown, the difference between this embodiment and Embodiment 1 is that:

[0053] A lifting plate 15 is placed on the upper side of the tray 8. The lifting plate 15 has the same diameter as the tray 8. The fixing column 10 can also be installed in the center of the lifting plate 15. The lifting plate 15 and the tray 8 cannot rotate relative to each other. The fixing column 10 on the tray 8 is detachably connected to the tray 8.

[0054] In this embodiment, the purpose of adding the lifting plate 15 is to allow two layers of corrugated packing 7 to be installed through the manhole 3. One layer of corrugated packing 7 is coiled on the tray 8, and the other layer of corrugated packing 7 is coiled on the lifting plate 15.

[0055] Working principle:

[0056] When installing the corrugated packing 7, first fix the end of the strip wire mesh to the fixed column 10 in the center of the lifting plate 15, then rotate the tray 8, which drives the lifting plate 15 to rotate, and then the strip wire mesh is wound on the lifting plate 15 to form a layer of corrugated packing 7.

[0057] Then, the lifting platform 15 is raised by external force (hoisting or lifting) to make room for the strip wire mesh to be wound on the tray 8.

[0058] Then, a fixing post 10 is installed in the center of the tray 8, and the end of the strip wire mesh is fixed on the fixing post 10 in the center of the tray 8. Then, the tray 8 is rotated, and the strip wire mesh is coiled on the tray 8 to form another layer of corrugated filler 7.

[0059] In practice, there can be multiple lifting plates 15, so that multiple layers of corrugated packing 7 can be installed through the manhole 3.

[0060] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. The present invention is not limited to the examples described above; the examples only illustrate the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packed fractionation tower for producing industrial alkane cleaning agents, comprising a tower body (1) and packing, wherein the packing is located inside the tower body (1), and the packing comprises bulk packing (5) and corrugated packing (7), characterized in that: Bulk packing (5) is located above corrugated packing (7); The corrugated packing (7) is formed by spirally winding strip wire mesh in a plane; Manholes (3) are provided on the tower body (1) corresponding to the corrugated packing (7). The strip wire mesh is introduced into the tower body (1) through the manholes (3) and spirally coiled inside the tower body (1). The strip mesh is composed of a planar mesh strip (11) and a zigzag mesh strip (12). The planar mesh strip (11) and the zigzag mesh strip (12) are connected at the folded edge (13) of the zigzag mesh strip (12). After connection, a continuous triangular prism space A (14) is formed between the planar mesh strip (11) and the zigzag mesh strip (12) as a medium channel. Between two adjacent loops of wire mesh, a continuous arrangement of triangular prism-shaped spaces B (17) is formed, which also serve as a medium channel; The tower body (1) is equipped with a rotatable tray (8). A fixing post (10) for fixing the strip wire mesh is set in the center of the tray (8). When the strip wire mesh is coiled, the end of the strip wire mesh is fixed on the fixing post (10), and then the tray (8) is driven to rotate, so that the strip wire mesh is coiled on the tray (8).

2. A packed fractionation tower for producing industrial alkane cleaning agents according to claim 1, characterized in that: The length direction of each of the triangular prism-shaped spaces A (14) forms a 45-degree angle with the upper and lower end faces of the corrugated packing (7).

3. A packed fractionation tower for producing industrial alkane cleaning agents according to claim 1, characterized in that: The edge of the tray (8) is machined with an external gear ring, and the tower body (1) is provided with a gear that meshes with the external gear ring. When in use, power is input to the gear through a portable power tool to make the gear rotate. The high speed and low torque rotation of the gear is converted into the low speed and high torque rotation of the tray (8), thereby driving the tray (8) to rotate.

4. A packed fractionation tower for producing industrial alkane cleaning agents according to claim 1, characterized in that: A lifting plate (15) is placed on the upper side of the tray (8). The lifting plate (15) has the same diameter as the tray (8). The fixing column (10) can also be installed in the center of the lifting plate (15). The lifting plate (15) and the tray (8) cannot rotate relative to each other. The fixing post (10) on the tray (8) is detachably connected to the tray (8).

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