Uniformly distributed reboiler
Patent Information
- Application Number
- CN202520507659.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-03-21
AI Technical Summary
[0005]本实用新型要解决的技术问题是：克服现有技术的不足，提供一种均匀分布式重沸器，解决了介质分布不均和换热管稳定性不足的问题
[0013]The shell-side cylinder has several through holes evenly distributed on its wall, located in the area between the sealing plate and the collecting plate. The shell-side medium enters the sealed internal space formed by the sealing plate, shell-side cylinder, and collecting plate through the connecting pipe, and is then evenly distributed throughout the shell-side space via these through holes. This uniform distribution of the shell-side medium makes heat transfer on the surface of the heat exchange tubes more uniform, thereby improving the efficiency and stability of the entire heat exchange system. The addition of a support plate effectively reduces the unsupported span of the heat exchange tubes, enhancing their stability, preventing failures caused by vibration, extending their service life, and reducing equipment maintenance costs. The sealing plate, shell-side cylinder, and collecting plate together form a sealed internal space for containing and guiding the shell-side medium. This structural design ensures that the shell-side medium is effectively guided and distributed after entering the shell, while preventing leakage. This invention features a simple structural design, with main components including a shell-side cylinder, sealing plate, collecting plate, support plate, connecting pipe, and heat exchange tubes. This simple design makes the equipment easier to process and install, reducing production costs. At the same time, the simple structure also facilitates equipment maintenance and repair, further improving the equipment's economy and practicality.
Smart Images
Figure CN224711581U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a uniformly distributed reboiler, belonging to the technical field of distillation tower equipment in the chemical and oil refining industries. Background Technology
[0002] Reboilers are indispensable key equipment in the chemical and oil refining industries, widely used in distillation column systems. Their main function is to provide heat to the liquid at the bottom of the column, causing partial vaporization to form steam, which is then returned to the column to maintain the continuous distillation process. The performance of the reboiler directly affects distillation efficiency, product quality, and the stability of the entire production process.
[0003] In traditional reboiler designs, the shell-side inlet is the channel through which the shell-side medium enters the shell. However, conventional shell-side inlet designs have significant drawbacks. Due to the lack of an effective medium distribution structure, the shell-side medium cannot be evenly distributed after entering the shell, leading to uneven heat transfer. This uneven heat transfer can cause localized overheating of the heat exchanger tubes. Under long-term operation, localized overheating will degrade the performance of the heat exchanger tube material, leading to tube damage and shortening its service life. Furthermore, the large unsupported span of the heat exchanger tubes makes them prone to failure due to vibration, further reducing the stability and service life of the heat exchanger.
[0004] To address these issues, the industry has been exploring new structural designs to achieve uniform distribution of the shell-side medium and improve the stability of the heat exchange tubes. However, most existing improvements are structurally complex, difficult to manufacture, and costly, making them difficult to widely implement in actual production. Therefore, developing a new type of reboiler that is simple in structure, easy to manufacture, and can effectively solve existing problems is of significant practical importance for improving the efficiency and reliability of the distillation process. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a uniformly distributed reboiler that solves the problems of uneven medium distribution and insufficient stability of heat exchange tubes.
[0006] The present invention discloses a uniformly distributed reboiler, comprising a shell-side cylinder, a sealing plate, a collecting plate, a support plate, a connecting pipe, and a heat exchange tube. Sealing plates are respectively installed on the inner sides of both ends of the shell-side cylinder, and a collecting plate is installed between the two sealing plates. The sealing plates, the shell-side cylinder, and the collecting plate together form a sealed internal space for containing and guiding the shell-side medium. Several through holes are evenly distributed on the wall of the shell-side cylinder, located in the area between the sealing plates and the collecting plate. The support plate is installed in the inner cavity of the shell-side cylinder, and the heat exchange tube passes through the support plate and is fixedly connected to it. A preset distance is maintained between the support plate and the inner wall of the shell-side cylinder. A connecting pipe is installed on the collecting plate and communicates with the internal space formed by the sealing plates, the shell-side cylinder, and the collecting plate, for the entry of the shell-side medium.
[0007] The liquid collection plate is made of arc-shaped steel. The arc-shaped steel eliminates the need for additional welding processes, resulting in a more uniform stress distribution. Straight plates or other shaped liquid collection plates may cause stress concentration in certain areas, leading to localized strength reduction or even cracking. The arc-shaped design effectively disperses stress, reducing stress concentration and thus improving the overall strength and reliability of the equipment.
[0008] The collecting plate is welded to the sealing plate and the shell-side cylinder. Welding is a high-strength connection method that ensures a tight fit between the collecting plate, sealing plate, and shell-side cylinder, forming a unified whole. This structural design significantly enhances the mechanical strength and stability of the entire reboiler, enabling it to operate stably under harsh conditions such as high pressure and high temperature, and reducing equipment failures caused by loose or detached components.
[0009] The through-hole is circular in shape. The circular design allows for smoother medium flow, reduces turbulence and localized impacts, and thus optimizes the distribution of the medium.
[0010] The support plate is a circular stainless steel plate. The circular design evenly distributes the supporting force on the heat exchange tubes, reducing the unsupported span of the heat exchange tubes and thus effectively reducing vibration during operation. This design significantly improves the stability of the heat exchange tubes, prevents failures caused by vibration, and extends their service life.
[0011] The diameter of the support plate is 90-98% of the shell-side inner diameter. This ensures effective support while allowing sufficient space for the flow of the shell-side medium.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] The shell-side cylinder has several through holes evenly distributed on its wall, located in the area between the sealing plate and the collecting plate. The shell-side medium enters the sealed internal space formed by the sealing plate, shell-side cylinder, and collecting plate through the connecting pipe, and is then evenly distributed throughout the shell-side space via these through holes. This uniform distribution of the shell-side medium makes heat transfer on the surface of the heat exchange tubes more uniform, thereby improving the efficiency and stability of the entire heat exchange system. The addition of a support plate effectively reduces the unsupported span of the heat exchange tubes, enhancing their stability, preventing failures caused by vibration, extending their service life, and reducing equipment maintenance costs. The sealing plate, shell-side cylinder, and collecting plate together form a sealed internal space for containing and guiding the shell-side medium. This structural design ensures that the shell-side medium is effectively guided and distributed after entering the shell, while preventing leakage. This invention features a simple structural design, with main components including a shell-side cylinder, sealing plate, collecting plate, support plate, connecting pipe, and heat exchange tubes. This simple design makes the equipment easier to process and install, reducing production costs. At the same time, the simple structure also facilitates equipment maintenance and repair, further improving the equipment's economy and practicality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model;
[0015] Figure 2 yes Figure 1 Schematic diagram of the structure along direction B;
[0016] Figure 3 yes Figure 1 Schematic diagram of the CC section.
[0017] In the diagram: 1. Sealing plate; 2. Liquid collection plate; 3. Shell-side cylinder; 4. Support plate; 5. Connecting pipe; 6. Heat exchange tube; 7. Through hole. Detailed Implementation
[0018] The present invention will be further described below with reference to embodiments:
[0019] Example 1
[0020] like Figures 1-3As shown, the present invention discloses a uniformly distributed reboiler, comprising a shell-side cylinder 3, a sealing plate 1, a liquid collecting plate 2, a support plate 4, a connecting pipe 5, and a heat exchange tube 6. Sealing plates 1 are respectively installed on the inner sides of both ends of the shell-side cylinder 3, and a liquid collecting plate 2 is installed between the two sealing plates 1. The sealing plates 1, the shell-side cylinder 3, and the liquid collecting plate 2 together form a sealed internal space for containing and guiding the shell-side medium. A plurality of through holes 7 are evenly distributed on the wall of the shell-side cylinder 3, located in the area between the sealing plates 1 and the liquid collecting plate 2. The support plate 4 is installed in the inner cavity of the shell-side cylinder 3, and the heat exchange tube 6 passes through the support plate 4 and is fixedly connected to it. A preset distance is maintained between the support plate 4 and the inner wall of the shell-side cylinder 3. The connecting pipe 5 is installed on the liquid collecting plate 2 and communicates with the internal space formed by the sealing plates 1, the shell-side cylinder 3, and the liquid collecting plate 2, for the entry of the shell-side medium.
[0021] The liquid collection plate 2 is made of arc-shaped steel.
[0022] The liquid collecting plate 2 is welded to the sealing plate 1 and the shell-side cylinder 3.
[0023] The through hole 7 is circular in shape. For example... Figure 2 As shown.
[0024] Support plate 4 is a circular stainless steel plate. For example... Figure 3 As shown.
[0025] The diameter of support plate 4 is 90-98% of the inner diameter of the shell side.
[0026] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.
Claims
1. A uniformly distributed reboiler, characterized in that, The shell-side cylinder (3), sealing plates (1), liquid collecting plates (2), support plates (4), connecting pipes (5), and heat exchange tubes (6) are included. Sealing plates (1) are respectively provided on the inner sides of both ends of the shell-side cylinder (3), and a liquid collecting plate (2) is provided between the two sealing plates (1). The sealing plates (1), the shell-side cylinder (3), and the liquid collecting plate (2) together form a sealed internal space for containing and guiding the shell-side medium. Several through holes (7) are evenly distributed on the cylinder wall of the shell-side cylinder (3). (7) Located in the area between the sealing plate (1) and the collecting plate (2); the support plate (4) is set in the inner cavity of the shell-side cylinder (3), the heat exchange tube (6) passes through the support plate (4) and is fixedly connected to the support plate (4); the support plate (4) and the inner wall of the shell-side cylinder (3) maintain a preset distance; the connecting pipe (5) is set on the collecting plate and is connected to the internal space formed by the sealing plate (1), the shell-side cylinder (3) and the collecting plate (2) for the entry of the shell-side medium.
2. The uniformly distributed reboiler according to claim 1, characterized in that, The liquid collection plate (2) is made of arc-shaped steel.
3. The uniformly distributed reboiler according to claim 2, characterized in that, The liquid collection plate (2) is welded to the sealing plate (1) and the shell-side cylinder (3).
4. The uniformly distributed reboiler according to claim 3, characterized in that, The through hole (7) is circular in shape.
5. The uniformly distributed reboiler according to any one of claims 1-4, characterized in that, The support plate (4) is a circular stainless steel plate.
6. The uniformly distributed reboiler according to claim 5, characterized in that, The diameter of the support plate (4) is 90-98% of the inner diameter of the shell side.