Barrier flow device and packed column

Abstract

The utility model belongs to liquid distributor technical field mainly relates to the anti wall flow device and the filling tower, wherein the anti wall flow device anti wall flow ring and the drainage plate, the drainage plate extends from the anti wall flow ring inner ring wall to the anti wall flow ring center, be provided with through -hole on the drainage plate, the drainage plate includes big end, connecting portion and small end, it is arc connection between big end, connecting portion and small end, big end and anti wall flow ring inner ring wall meet, the width of connecting portion is less than big end and small end, the edge of drainage plate is set up as fillet. The utility model sets up the drainage part as the drainage plate of independent each other, there is flowing space between each drainage plate, reduces the gas liquid ascending resistance, is convenient for the gas liquid mass transfer in the filling tower, improves the function efficiency of filling tower.

Description

Technical Field

[0001] This utility model belongs to the field of liquid distributor technology, and mainly relates to anti-wall flow device and packed tower. Background Technology

[0002] In the production of trichlorosilane, packed towers are crucial gas-liquid mass transfer devices. Packed towers possess numerous advantages, including simple structure, low cost, corrosion resistance, and low pressure drop, making them widely used in the chemical industry for gas-liquid mass transfer and heat transfer, achieving the purification and separation of waste gases.

[0003] As the liquid flows downwards along the packing layer, the flow is rapid due to the low flow resistance and short path at the tower wall.

[0004] The gas tends to flow towards the tower wall; this phenomenon is called the wall flow effect. The wall flow effect causes uneven distribution of the gas and liquid phases in the packing layer, thus reducing mass transfer efficiency. Therefore, reducing the wall flow effect is crucial.

[0005] Existing technology, such as Chinese Patent Publication No. CN206414940U, provides a packed tower with a novel anti-wall flow ring. The anti-wall flow ring includes a base and a guide surface inclined upwards around the base in a direction away from the base's axis. A guide groove is provided radially on the upper surface of the base, and through holes are provided in the guide groove. A vent is also provided at the center of the base. By setting the anti-wall flow ring in the packing layer, the wall flow phenomenon within the packed tower is effectively improved, resulting in uniform liquid distribution within the packing layer, increased gas-liquid mass transfer efficiency, and filtration of impurities in the gas.

[0006] However, the existing technology has the following problems: the presence of the chassis will increase the resistance to gas-liquid rise in the packed tower, affecting the mass transfer efficiency of gas and liquid in the packed tower. Utility Model Content

[0007] To address the technical problem that existing anti-wall flow rings impede gas-liquid flow, leading to increased resistance to gas-liquid upward movement in packed towers, the technical solution of this utility model is achieved through the following methods:

[0008] A flow-blocking device includes a flow-blocking ring and a flow-guiding plate. The flow-guiding plate extends from the inner wall of the flow-blocking ring to the center of the flow-blocking ring. The flow-guiding plate is provided with a through hole. The flow-guiding plate includes a large end, a connecting part, and a small end. The large end, the connecting part, and the small end are connected in an arc shape. The large end is in contact with the inner wall of the flow-blocking ring. The width of the connecting part is smaller than that of the large end and the small end. The edges of the flow-guiding plate are rounded.

[0009] Furthermore, the guide plate also includes a guide groove extending from the larger end to the smaller end. The guide groove in this invention allows the liquid from the guide plate to be introduced into the middle part of the packed tower for gas-liquid exchange, thus completing the liquid redistribution.

[0010] Furthermore, the drainage plate is continuously inclined downwards from the large end to the small end, and the angle of inclination is 10-20°. In this invention, the drainage plate is set with a downward inclined structure to facilitate the flow of liquid on the drainage plate.

[0011] Furthermore, the anti-wall flow ring is a thin-walled annular shape, with its bottom connected to the bottom of the large end. A guide line is provided at the connection point between the anti-wall flow ring and the large end, with one end connected to the large end and the other end connected to the top of the anti-wall flow ring. In this invention, the guide line guides the liquid on the anti-wall flow ring to the guide plate, where it is then redistributed.

[0012] A packed tower includes a tower body, wherein the tower body is provided with the anti-wall flow device described in any one of the above claims.

[0013] The beneficial effects of this utility model are:

[0014] The inventors of this invention discovered in their daily work and research that existing anti-wall flow devices for packed towers often use integrated flow guiding components, which increases flow guiding efficiency and improves liquid redistribution. However, these components are mostly concentrated in the central area of ​​the anti-wall flow device, and their installation after the packing tower affects the vertical flow of gas and liquid within the tower, resulting in reduced mass transfer efficiency. To address these issues, this invention uses independent flow guiding plates with flow space between them, reducing upward resistance to gas and liquid and facilitating mass transfer within the packed tower. Furthermore, the flow guiding plates are designed with a structure that is wider at both ends and narrower in the middle, further increasing the flow space and ensuring that the liquid on the anti-wall flow ring is guided by the flow guiding plates into the center of the packed tower for redistribution. Additionally, the edges of the flow guiding plates in this invention are rounded, further reducing upward resistance to gas and liquid within the packed tower and improving mass transfer efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the anti-wall flow device in Embodiment 1 of this utility model;

[0016] Figure 2 This is a side view of the drainage plate in Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of the drainage plate in Embodiment 1 of this utility model;

[0018] Figure 4This is a schematic diagram of the packed tower in Embodiment 1 of this utility model;

[0019] Figure 5 This is a schematic diagram of the anti-wall flow device in Embodiment 2 of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Anti-wall flow ring; 2. Flow guide plate; 3. Tower body; 110. Flow guide line; 210. Large end; 220. Connecting part; 230. Small end; 240. Flow guide groove; 250. Through hole. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] The basics are as follows: Figure 1-4As shown, this embodiment discloses an anti-wall flow device, which includes an anti-wall flow ring 1 and several guide plates 2, wherein the anti-wall flow ring 1 is a thin-walled annular shape. During installation, the outer ring of the anti-wall flow ring 1 is connected to the packed tower; the specific connection method can refer to any existing technology and will not be elaborated here. The guide plates 2 are disposed within the inner ring of the anti-wall flow ring 1 and extend from the inner ring to the middle of the anti-wall flow ring 1; the anti-wall flow ring 1 and the guide plates 2 are integrally formed. In this embodiment, eight guide plates 2 are provided.

[0026] In this embodiment, the flow guide plate 2 includes an integrally formed large end 210, a connecting part 220, and a small end 230. The large end 210 is connected to the inner ring of the anti-wall flow ring 1. The width of the connecting part 220 is smaller than that of the large end 210 and the small end 230, and the large end 210, the connecting part 220, and the small end 230 are connected by an arc. The edges of the flow guide plate 2 are all rounded, which facilitates gas-liquid flow.

[0027] In this embodiment, the guide plate 2 is also provided with a guide channel 240 and regularly arranged through holes 250. The guide channel 240 extends from the large end 210 to the small end 230, and an outlet is provided at the small end 230. The guide channel 240 allows the liquid on the guide plate 2 to be introduced into the middle part of the packed tower for gas-liquid exchange, completing the redistribution of the liquid. The through holes 250 facilitate the redistribution and arrangement of the liquid on the guide plate 2. The guide plate 2 is continuously inclined downward from the large end 210 to the small end 230, and the angle of inclination is 10-20°. In this utility model, the guide plate 2 is set with a downward inclined structure to facilitate the flow of liquid on the guide plate 2.

[0028] In this embodiment, a guide line 110 is provided at the junction of the anti-wall flow ring 1 and the large end 210. One end of the guide line 110 is connected to the large end 210, and the other end is connected to the top of the anti-wall flow ring 1. In this utility model, the guide line 110 can guide the liquid on the anti-wall flow ring 1 to flow to the guide plate 2, and then the liquid is redistributed by the action of the guide plate 2.

[0029] This embodiment also provides a packed tower, including a tower body 3, which uses the aforementioned anti-wall flow device.

[0030] Example 2

[0031] As attached Figure 5 As shown, the difference between this embodiment and embodiment 1 is that the large ends 210 of adjacent guide plates 2 are connected. This arrangement allows the liquid on the anti-wall flow ring 1 to be redispersed through the guide plates 2, reducing the direct fall of liquid on the anti-wall flow ring 1 into the packed tower.

[0032] In summary, this invention sets the flow guiding components in the anti-wall flow device as independent flow guiding plates 2, with flow space between each flow guiding plate 2, reducing the resistance to gas-liquid upward movement and facilitating gas-liquid mass transfer in the packed tower. Simultaneously, the flow guiding plates 2 are designed with a structure that is wide at both ends and narrow in the middle, further increasing the flow space while ensuring that the liquid on the anti-wall flow ring 1 is guided by the flow guiding plates 2 and introduced into the center of the packed tower for redistribution. Furthermore, the edges of the flow guiding plates 2 in this invention are rounded, which further reduces the resistance to gas-liquid upward movement in the packed tower and improves mass transfer efficiency.

[0033] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A flow-blocking device, comprising a flow-blocking ring (1) and a plurality of flow-guiding plates (2), wherein the flow-guiding plates (2) extend from the inner wall of the flow-blocking ring (1) to the center of the flow-blocking ring (1), and the flow-guiding plates (2) are provided with through holes (250), characterized in that: The diversion plate (2) includes a large end (210), a connecting part (220) and a small end (230). The large end (210), the connecting part (220) and the small end (230) are connected in an arc shape. The large end (210) is connected to the inner wall of the anti-wall flow ring (1). The width of the connecting part (220) is smaller than that of the large end (210) and the small end (230). The edges of the diversion plate (2) are rounded.

2. The anti-wall flow device according to claim 1, characterized in that: The number of the diversion plates (2) is 8 to 12, and the diversion plates (2) also include diversion grooves (240), which extend from the large end (210) to the small end (230).

3. The anti-wall flow device according to claim 2, characterized in that: The drainage plate (2) is continuously inclined from the large end (210) to the small end (230), and the angle of inclination is 10 to 20°.

4. The anti-wall flow device according to claim 1, characterized in that: The anti-wall flow ring (1) is a thin-walled ring. The bottom of the anti-wall flow ring (1) is connected to the bottom of the large end (210). A guide line (110) is provided at the connection between the anti-wall flow ring (1) and the large end (210). One end of the guide line (110) is connected to the large end (210), and the other end is connected to the top of the anti-wall flow ring (1).

5. The anti-wall flow device according to claim 1, characterized in that: The large ends (210) of adjacent drainage plates (2) are connected.

6. A packed tower, comprising a tower body (3), characterized in that: The tower body (3) is provided with a wall-flow prevention device as described in any one of claims 1 to 5.

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