Bubble cap tray for efficient gas-liquid mass transfer

Abstract

The utility model provides a bubble-cap tray for high-efficiency gas-liquid mass transfer, which relates to the technical field of bubble-cap trays and comprises a tray plate, a lifting pipe arranged at the top of the tray plate, a riser pipe arranged at the top of the lifting pipe, a bubble cap arranged at the top of the riser pipe, stirring blades arranged inside the bubble cap and driven by gas flow to rotate. After gas enters the bubble cap, the stirring structure is driven to operate, a liquid layer is stirred, a boundary layer of a gas-liquid interface is broken, gas-liquid mixing is enhanced, the mass transfer process is accelerated, the liquid layer is stirred by the stirring blades, and the boundary layer of the gas-liquid interface can be broken. Compared with the existing bubble cap tray, the gas-liquid mixing is more sufficient, the mass transfer efficiency is obviously improved, the stirring blades are driven to operate after the gas enters the bubble cap, and the liquid layer is strongly disturbed in the process. The disturbance enables the gas and the liquid to be more uniformly mixed in the bubble cap, and avoids the situation of local aggregation or non-uniform distribution of the gas and the liquid, thereby ensuring that the gas-liquid mass transfer on the whole tower tray is more balanced.

Description

Technical Field

[0001] This utility model relates to the field of bubble cap tray technology, and in particular to a bubble cap tray for high-efficiency gas-liquid mass transfer. Background Technology

[0002] A gas-liquid mass transfer bubble cap tower disclosed in Chinese Patent No. CN202070184U includes a bubble cap, toothed slots, a riser pipe, a rotating channel, a liquid channel, and a tower plate. The lower part of the bubble cap has three rows of triangularly arranged circular toothed slots, and the bottom of the bubble cap has three arc-shaped liquid channels. The bubble cap is inverted and suspended concentrically with the riser pipe, connected to the tower plate, which is expanded and attached to the tower plate. The bubble cap is made of ordinary steel pipe. This invention utilizes ordinary steel pipe to replace the structurally complex bubble cap, detaching the bubble cap from the riser pipe. It features a simple structure, low cost, high efficiency, convenient maintenance and replacement, and good performance.

[0003] The aforementioned prior art and related documents have the following technical problems:

[0004] 1. Existing bubble cap trays have some problems with uneven gas-liquid distribution in practical applications, which leads to low gas-liquid mass transfer efficiency in some areas and fails to fully utilize the performance of the tray. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency bubble cap tray for gas-liquid mass transfer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bubble cap tray for high-efficiency gas-liquid mass transfer, comprising a tray plate, a riser pipe at the top of the tray plate, a gas riser pipe at the top of the riser pipe, and a bubble cap at the top of the gas riser pipe.

[0007] Preferably, the inner surface of the blister pack is provided with turbulence protrusions, and the turbulence protrusions are spiral-shaped and welded to the inner surface of the blister pack.

[0008] Preferably, the outer surface of the blister pack has twelve slits arranged in a circumferential array, and each slit has the same groove depth.

[0009] Preferably, the bottom of the blister pack is provided with an adjusting threaded rod, and the top of the adjusting threaded rod is welded to the inside of the blister pack.

[0010] Preferably, the bottom of the adjusting threaded rod is provided with a positioning plate, and the positioning plate and the adjusting threaded rod are connected by a thread, and the top of the positioning plate is fitted to the bottom of the tray plate.

[0011] Preferably, the bottom of the positioning plate is provided with an adjusting bolt, and the top of the adjusting bolt is threaded to the bottom of the positioning plate, and one side of the adjusting bolt is rounded.

[0012] Preferably, the inside of the blister pack is provided with stirring blades, and the stirring blades are rotatably connected to the blister pack.

[0013] Beneficial effects

[0014] In this invention, stirring blades are installed inside the bubble cap, driven to rotate by gas flow. After the gas enters the bubble cap, it drives the stirring structure to agitate the liquid layer, breaking down the gas-liquid interface boundary layer, enhancing gas-liquid mixing, and accelerating the mass transfer process. The stirring blades effectively break down the gas-liquid interface boundary layer. The presence of the boundary layer hinders the transfer of matter between gas and liquid, while the stirring blades effectively weaken the influence of the boundary layer, allowing for smoother molecular diffusion between gas and liquid, thus greatly accelerating the mass transfer process. Compared with existing bubble cap trays, gas-liquid mixing is more thorough, and mass transfer efficiency is significantly improved. The gas entering the bubble cap drives the stirring blades, creating strong disturbances in the liquid layer. This disturbance allows for more uniform mixing of gas and liquid within the bubble cap, avoiding localized aggregation or uneven distribution, thereby ensuring more balanced gas-liquid mass transfer across the entire tray and further improving the overall mass transfer performance of the tray.

[0015] In this invention, a turbulence protrusion is provided on the inner surface of the bubble cap. When gas enters the bubble cap through the slits and comes into contact with the liquid, the spiral turbulence protrusion causes a spiral disturbance in the gas and liquid, further increasing the contact area and the degree of disturbance, thus enhancing the mass transfer effect. The spiral disturbance makes the trajectory of the gas bubbles in the liquid more complex, no longer a simple straight upward movement. The gas-liquid interface is greatly distorted and extended, which significantly increases the surface area of ​​gas-liquid contact. More gas molecules have the opportunity to interact with liquid molecules, accelerating the speed of mass transfer and thus improving the mass transfer efficiency. Inside the entire bubble cap, the disturbance generated by the spiral turbulence protrusion can make the gas-liquid distribution more uniform. Whether in the central or edge area of ​​the bubble cap, the gas and liquid can fully contact and mix, avoiding the problem of low local mass transfer efficiency, thereby improving the mass transfer stability and consistency of the entire tray.

[0016] In this invention, an adjusting threaded rod is installed inside the riser pipe. The bottom of the adjusting threaded rod and the positioning plate are used to position and control the height on the tray plate. The structure of the adjusting threaded rod and the positioning plate on the tray plate is relatively simple and clear. During installation, this structure is easy to operate, accurately installing the riser pipe on the tray plate and facilitating initial positioning. During equipment maintenance, the height of the riser pipe can also be easily checked and adjusted. Moreover, since the adjustment device is mainly concentrated inside the riser pipe and on the tray plate, it will not cause excessive interference to other parts of the tray, which is beneficial to the maintenance and management of the entire equipment. Attached Figure Description

[0017] Figure 1 This is an isometric view of the present invention;

[0018] Figure 2 This is a bottom view of the present invention;

[0019] Figure 3 This is a structural diagram of the present invention;

[0020] Figure 4 This is a bottom view of the structure of this utility model.

[0021] Legend:

[0022] 1. Tray; 2. Riser pipe; 3. Bubble cap; 4. Gap; 5. Positioning plate; 6. Adjusting bolt; 7. Adjusting threaded rod; 8. Stirring blades; 9. Air riser pipe; 10. Turbidity protrusion. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0026] Reference Figure 1-4A high-efficiency gas-liquid mass transfer bubble cap tray includes a tray plate 1, a riser pipe 2 at the top of the tray plate 1, a riser pipe 9 at the top of the riser pipe 2, a turbulence protrusion 10 on the inner surface of the bubble cap 3 (which is spiral-shaped and welded to the inner surface of the bubble cap 3), twelve toothed slots 4 arranged in a circumferential array on the outer surface of the bubble cap 3 (each slot 4 has the same depth), an adjusting threaded rod 7 at the bottom of the bubble cap 3 (the top of the adjusting threaded rod 7 is welded to the inside of the bubble cap 3), a positioning plate 5 at the bottom of the adjusting threaded rod 7 (which is threaded to the adjusting threaded rod 7), a fitting top to the bottom of the tray plate 1, an adjusting bolt 6 at the bottom of the positioning plate 5 (which is threaded to the bottom of the positioning plate 5), and a rounded corner on one side of the adjusting bolt 6, a stirring blade 8 inside the bubble cap 3 (which is rotatably connected to the bubble cap 3), and a bubble cap 3 at the top of the riser pipe 9. Specific Implementation Example 2:

[0028] Reference Figure 1-4 The method involves setting a spray hole at the top of the bubble cap 3. When the gas pressure reaches a certain value, some of the gas is ejected at high speed from the spray hole, forming a jet that impacts the liquid layer, generating a large number of microbubbles, increasing the intensity of gas-liquid contact, and improving mass transfer efficiency.

[0029] In summary:

[0030] 1. A stirring blade 8 is installed inside the bubble cap 3, driven by gas flow to rotate. After the gas enters the bubble cap 3, it drives the stirring structure to rotate, stirring the liquid layer, breaking the gas-liquid interface boundary layer, enhancing gas-liquid mixing, and accelerating the mass transfer process. This allows the stirring blade 8 to stir the liquid layer and break the gas-liquid interface boundary layer. The existence of the boundary layer hinders the transfer of mass between gas and liquid, while the stirring blade 8 effectively weakens the influence of the boundary layer, making molecular diffusion between gas and liquid smoother and greatly accelerating the mass transfer process. Compared with existing bubble cap 3 trays, gas-liquid mixing is more thorough, and the mass transfer efficiency is significantly improved. The gas entering the bubble cap 3 drives the stirring blade 8 to rotate, which generates strong disturbance in the liquid layer. This disturbance allows for more uniform mixing of gas and liquid within the bubble cap 3, avoiding local aggregation or uneven distribution of gas and liquid, thus ensuring more balanced gas-liquid mass transfer across the entire tray and further improving the overall mass transfer performance of the tray.

[0031] 2. A turbulence protrusion 10 is provided on the inner surface of the bubble cap 3. When gas enters the bubble cap 3 through the toothed gap 4...

[0032] When in contact with the liquid, the spiral turbulence protrusion 10 causes spiral disturbances in the gas and liquid, further increasing the contact area and disturbance degree, enhancing the mass transfer effect. The spiral disturbance makes the trajectory of the gas bubbles in the liquid more complex, no longer a simple straight upward movement. The gas-liquid interface is greatly distorted and extended, which significantly increases the surface area of ​​gas-liquid contact. More gas molecules have the opportunity to interact with liquid molecules, accelerating the speed of mass transfer and thus improving the mass transfer efficiency. Inside the entire bubble cap 3, the disturbances generated by the spiral turbulence protrusion 10 can make the gas-liquid distribution more uniform. Whether in the central or edge area of ​​the bubble cap 3, the gas and liquid can fully contact and mix, avoiding the problem of low local mass transfer efficiency, thereby improving the mass transfer stability and consistency of the entire tray.

[0033] 3. An adjusting threaded rod 7 is installed inside the riser pipe 2. The bottom of the adjusting threaded rod 7 and the positioning plate 5 are positioned and their height controlled on the tray plate 1. This structure, which allows for positioning of the adjusting threaded rod 7 and the positioning plate 5 on the tray plate 1, is relatively simple and straightforward. During installation, this structure is easy to operate, accurately installing the riser pipe 9 on the tray plate 1 and facilitating initial positioning. During equipment maintenance, the height of the riser pipe 9 can also be easily checked and adjusted. Moreover, since the adjustment device is mainly concentrated inside the riser pipe 9 and on the tray plate 1, it will not cause excessive interference to other parts of the tray, which is beneficial for the maintenance and management of the entire equipment.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high efficiency gas-liquid mass transfer bubble-cap tray comprising a tray deck (1) characterised in that: The top of the tray plate (1) is provided with a lifting pipe (2), the top of the lifting pipe (2) is provided with a gas lifting pipe (9), the top of the gas lifting pipe (9) is provided with a bubble cap (3), the inner surface of the bubble cap (3) is provided with a spoiler (10), the outer surface of the bubble cap (3) is provided with a plurality of tooth slots (4), the bottom of the bubble cap (3) is provided with an adjusting threaded rod (7), the bottom of the adjusting threaded rod (7) is provided with a positioning plate (5), the bottom of the positioning plate (5) is provided with an adjusting bolt (6).

2. A high efficiency gas-liquid mass transfer bubble column tray according to claim 1, characterized in that: The spoiler (10) is spiral-shaped and is welded on the inner surface of the bubble cap (3).

3. The high efficiency gas-liquid mass transfer bubble column tray according to claim 1, wherein: The outer surface of the bubble cap (3) is provided with twelve tooth slots (4), and the tooth slots (4) adopt a circumferential array, and the slotting depth of each tooth slot (4) is the same.

4. The high efficiency gas-liquid mass transfer bubble column tray according to claim 1, wherein: The top of the adjusting threaded rod (7) is welded with the inside of the bubble cap (3).

5. The high efficiency gas-liquid mass transfer bubble column tray according to claim 1, wherein: The positioning plate (5) is threadedly connected with the adjusting threaded rod (7), and the top of the positioning plate (5) is attached to the bottom of the tray plate (1).

6. The high efficiency gas-liquid mass transfer bubble column tray according to claim 1, wherein: The top of the adjusting bolt (6) is threadedly connected with the bottom of the positioning plate (5), and one side of the adjusting bolt (6) is roundly processed.

7. The high efficiency gas-liquid mass transfer bubble column tray according to claim 1, wherein: The inside of the bubble cap (3) is provided with a stirring blade (8), and the stirring blade (8) is rotationally connected with the bubble cap (3).

Images