High-efficiency super-large-flux impact-resistant three-dimensional gas-liquid mass and heat transfer element

Abstract

The utility model discloses a high-efficiency super-large-flux impact-resistant three-dimensional gas-liquid mass and heat transfer element which comprises a vertical plate, one side of the vertical plate is connected with a spraying plate, a plurality of spraying holes are evenly formed in the spraying plate, one side of the spraying plate is provided with a perforated reflecting plate, the upper end of the vertical plate is connected with a top plate, and the lower end of the vertical plate is connected with an inlet mechanism used for gas and liquid to enter the element. An outlet mechanism used for discharging a part of mixed gas and liquid is arranged above the vertical plate, the inlet mechanism comprises a bottom plate, a bottom plate opening is formed in the bottom plate and used for a gas inlet, a cap cover bottom gap is formed in the lower end of the spraying plate and used for a liquid inlet, and the outlet mechanism comprises a cap cover top gap. In the process that gas and liquid in the cap cover flow upwards in parallel, a gas-liquid mixture passes through the spraying plate at a certain downward angle under the reflection action of the reflecting plate, further separation of the gas and the liquid is facilitated, entrainment entrainment is reduced, a gas-liquid flowing path in the cap cover tends to be streamline, and flowing resistance can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of mass and heat transfer element technology, and in particular to a high-efficiency, ultra-high flux, impact-resistant three-dimensional gas-liquid mass and heat transfer element. Background Technology

[0002] Gas-liquid mass and heat transfer elements are components used for mass and heat transfer between gas and liquid, and are widely used in towers in industries such as oil refining, petrochemicals, chemicals, pharmaceuticals, and environmental protection. In unit operations requiring distillation, absorption, and other processes, sufficient contact between gas or vapor and liquid is necessary to achieve adequate mass and heat transfer, reach phase equilibrium as much as possible, and separate the raw materials through multiple mass and heat transfer processes to obtain the desired product specifications.

[0003] Towers used for separation are generally divided into packed towers and plate towers or composite towers that contain both packing and trays. Common types of plate tower trays include bubble cap towers, valve tray towers, and sieve tray towers, which belong to the bubble tray category.

[0004] In the 1960s, Mitsui Shipbuilding Co., Ltd. of Japan developed a new type of vertical sieve tray tower, NewVST, which significantly improved the processing capacity compared to other trays at the time. Due to the realization of the parallel-flow jet operation state of local units of the tray, it has a high mass transfer efficiency. Its design concept of spatial development of tray structure was also recognized by the chemical engineering community. In the early 1980s, some universities and research institutions in my country conducted detailed studies on the structure and performance of mass transfer units on the NewVST tray. Based on this, a series of trays with new unit structures were proposed. However, some inherent defects of NewVST were not well resolved, and the performance of the tray in various aspects was not significantly improved.

[0005] This novel vertical sieve tray is a jet-type tray, characterized by a large mass transfer area, high gas-liquid mass transfer intensity, and a large coverage area, resulting in high mass transfer efficiency and high throughput. However, considering the actual design of existing trays of this type, there are some drawbacks, such as: under high throughput conditions, the gas-liquid mixture has a greater impact on the top of the cap, which can easily lead to damage; after the gas and liquid are discharged horizontally or obliquely upward from the jet plate and top gap, incomplete gas-liquid separation can easily occur, forming mist entrainment and reducing mass transfer efficiency; and the limited side outlet area at high volumes can cause increased resistance.

[0006] Based on this, a high-efficiency, ultra-high flux, impact-resistant three-dimensional gas-liquid mass and heat transfer element is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a high-efficiency, high-flux, impact-resistant three-dimensional gas-liquid mass transfer and heat transfer element to solve the above problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-efficiency, high-flux, impact-resistant three-dimensional gas-liquid mass transfer and heat transfer element includes a vertical plate, a spray plate connected to one side of the vertical plate, a plurality of spray holes uniformly opened on the spray plate, an open reflector plate provided on one side of the spray plate, a top plate connected to the upper end of the vertical plate, an inlet mechanism for gas and liquid to enter the element connected to the lower end of the vertical plate, and an outlet mechanism for gas and liquid to be mixed and then partially discharged above the vertical plate.

[0010] Preferably, the inlet mechanism includes a base plate with a base plate opening for a gas inlet, and a cap bottom gap at the lower end of the spray plate for a liquid inlet.

[0011] Preferably, the outlet mechanism includes a cap top gap, which is formed at the upper end of the spray plate.

[0012] Preferably, a baffle is connected to one side of the top plate, the baffle is at the same height as the top gap of the cap, and the lower edge of the baffle is lower than the lower edge of the top gap of the cap.

[0013] Preferably, the perforated reflectors are connected by a filler side baffle, a filler top baffle, and a guide baffle.

[0014] Preferably, a filler is provided between the perforated reflectors, and the lower edge of the filler is on the same plane as the upper edge of the guide baffle.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In this application, during the upward flow of gas and liquid inside the cap, the gas-liquid mixture is reflected by the reflector plate, and passes through the spray plate at a certain downward angle, which is conducive to further separation of gas and liquid and reduces mist entrainment.

[0017] 2. This application improves the mass and heat transfer process by gradually reducing the upward flow space of gas and liquid fluids inside the cap and gradually increasing the gas-liquid mixing intensity.

[0018] 3. This application improves the streamlined flow path of gas and liquid inside the cap by making the flow path more streamlined, and the openings on the reflector plate further increase the gas and liquid outlet area, thereby reducing flow resistance.

[0019] 4. This application utilizes a streamlined gas-liquid flow path and a symmetrical structure of the reflector plate to partially offset the impact of gas-liquid flow on the entire cap. Furthermore, the overall structure has high strength and the natural frequency of the entire tower plate is high, making it less prone to resonance and more resistant to the impact of high-load conditions. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the heat transfer element according to an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of the structure of the opening in the base plate according to an embodiment of the present utility model is shown;

[0022] Figure 3 An exploded structural diagram of the filler connection provided according to an embodiment of the present invention is shown.

[0023] Legend:

[0024] 1. Vertical plate; 2. Spray plate; 3. Perforated reflector plate; 4. Top plate; 5. Baffle; 6. Bottom plate; 7. Bottom gap of cap; 8. Top gap of cap; 9. Bottom plate opening; 10. Packing material; 11. Side baffle of packing material; 12. Top baffle of packing material; 13. Guide baffle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-3 This utility model provides a technical solution:

[0027] A high-efficiency, high-flux, impact-resistant three-dimensional gas-liquid mass and heat transfer element includes a vertical plate 1, a spray plate 2 connected to one side of the vertical plate 1, multiple spray holes evenly opened on the upper part of the spray plate 2, an open reflector plate 3 provided on one side of the spray plate 2, a top plate 4 connected to the upper end of the vertical plate 1, an inlet mechanism for gas and liquid to enter the element connected to the lower end of the vertical plate 1, and an outlet mechanism for gas and liquid to be discharged after mixing is provided above the vertical plate 1.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the inlet mechanism includes a base plate 6 with a base plate opening 9 for gas inlet and a cap bottom gap 7 at the lower end of the spray plate 2 for liquid inlet. Gas and liquid collide and mix with each other through different inlets to maintain a highly efficient gas-liquid mixing state.

[0029] Specifically, such as Figure 2 As shown, the outlet mechanism includes a cap top gap 8, which is located at the top of the spray plate 2, and the uppermost gas-liquid mixture is discharged from the cap top gap 8.

[0030] Specifically, such as Figure 2As shown, a baffle 5 is connected to one side of the top plate 4. The baffle 5 and the top gap 8 of the cap are set at the same height. The lower edge of the baffle 5 is lower than the lower edge of the top gap 8 of the cap. The baffle 5 is used to block and intercept the gas-liquid mixture discharged from the top gap 8 of the cap, thereby reducing the entrainment of mist droplets and further enhancing the gas-liquid mass transfer.

[0031] Specifically, such as Figure 3 As shown, the perforated reflector plates 3 are connected by a packing side baffle 11, a packing upper baffle 12, and a guide baffle 13. The packing 10 is a chemical material used for gas-liquid separation and further mass and heat transfer.

[0032] Specifically, such as Figure 3 As shown, a filler 10 is provided between the perforated reflector plates 3. The lower edge of the filler 10 is on the same plane as the upper edge of the guide baffle 13, or the former is slightly lower than the latter.

[0033] In summary, the high-efficiency, high-throughput, impact-resistant three-dimensional gas-liquid mass and heat transfer element provided in this embodiment, when in use, has multiple mass and heat transfer elements distributed throughout the entire tower plate as needed. Gas enters the inside of the cover from the bottom of the tower plate through the bottom plate opening 9 on the bottom plate 6. Liquid enters the inside of the cover through the bottom gap 7 of the cover during the transverse flow from the top of the tower plate. The gas-liquid mixture is evenly divided by the perforated reflector plate 3 and flows upward, and is ejected through the nozzles on the spray plate 2, the top gap 8 of the cover between the top plate 4 and the spray plate 2, and the openings on the perforated reflector plate 3.

[0034] As the vapor-liquid mixture sprayed from the spray plate 2 moves downward at an angle, vapor-liquid separation is completed. The vapor-liquid mixture sprayed from the top gap 8 of the cap comes into contact with the baffle 5, completing vapor-liquid separation. The vapor-liquid mixture sprayed from the perforated reflector plate 3 undergoes further mass transfer and separation in the packing.

[0035] When the vapor phase load is large, the vapor phase outlet area is increased by the perforated reflector plate 3. At the same time, the packing 10 at the vapor phase outlet further completes the mass and heat transfer and has a gas-liquid separation function. The separated liquid enters the V-shaped groove between the perforated reflector plates 3 and flows in the same direction as the overall liquid phase of the tray under the action of the guide baffle 13. There is no back mixing in this part, which increases the mass transfer driving force and thus improves the mass transfer efficiency.

[0036] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-efficiency, high-flux, impact-resistant three-dimensional gas-liquid mass and heat transfer element, comprising a vertical plate (1), characterized in that, A spray plate (2) is connected to one side of the upright plate (1). Multiple spray holes are evenly opened on the spray plate (2). An open reflector plate (3) is provided on one side of the spray plate (2). A top plate (4) is connected to the upper end of the upright plate (1). An inlet mechanism for gas and liquid to enter the element is connected to the lower end of the upright plate (1). An outlet mechanism for gas and liquid to be mixed and then discharged is provided above the upright plate (1).

2. The high-efficiency, ultra-high flux, impact-resistant three-dimensional gas-liquid mass transfer and heat transfer element according to claim 1, characterized in that, The inlet mechanism includes a base plate (6), on which a base plate opening (9) is provided for a gas inlet, and a cap bottom gap (7) is provided at the lower end of the spray plate (2) for a liquid inlet.

3. The high-efficiency, ultra-high flux, impact-resistant three-dimensional gas-liquid mass transfer and heat transfer element according to claim 1, characterized in that, The outlet mechanism includes a cap top gap (8), which is located at the upper end of the spray plate (2).

4. The high-efficiency, ultra-high flux, shock-resistant three-dimensional gas-liquid mass transfer and heat transfer element according to claim 1, characterized in that, A baffle (5) is connected to one side of the top plate (4). The baffle (5) and the top gap (8) of the cap are set at the same height. The lower edge of the baffle (5) is lower than the lower edge of the top gap (8).

5. The high-efficiency, ultra-high flux, impact-resistant three-dimensional gas-liquid mass transfer and heat transfer element according to claim 1, characterized in that, The perforated reflector plates (3) are connected by a filler side baffle (11), a filler upper baffle (12), and a guide baffle (13).

6. The high-efficiency, ultra-high flux, shock-resistant three-dimensional gas-liquid mass transfer and heat transfer element according to claim 5, characterized in that, A filler (10) is provided between the perforated reflector plates (3), and the lower edge of the filler (10) is on the same plane as the upper edge of the guide baffle (13).

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