Flow guide chain type liquid distributor

Abstract

The utility model provides a diversion chain type liquid distributor which comprises a primary tank, a distribution box and a secondary tank, the lower part of the primary tank is connected with the distribution box, and the lower part of the distribution box is connected with the secondary tank; wherein a side plate of the secondary tank is provided with liquid distribution holes, a first liquid baffle forming an angle with the side plate of the secondary tank is arranged above the liquid distribution holes, the lower part of the first liquid baffle is connected with a flow guide chain, and the projection of the flow guide chain on the side plate of the secondary tank covers the liquid distribution holes. The liquid distributor disclosed by the utility model has the advantages of multiple liquid distribution points, uniform liquid distribution and more sufficient gas-liquid contact, so that the gas-liquid mass transfer efficiency is greatly improved, equipment blockage can be prevented, the operation flexibility is high, the treatment capacity is high, and the liquid distributor is suitable for various operation working conditions such as rectification, water washing, desulfurization and the like and has a better application prospect.

Description

Technical Field

[0001] This utility model relates to the fields of chemical, petroleum, food, and pharmaceutical technology, and specifically to a flow-guiding chain liquid distributor. Background Technology

[0002] Distillation columns, as core equipment in the separation process, are mainly divided into plate columns and packed columns. Among them, packed columns occupy an important position in industrial applications due to their advantages such as high separation efficiency, low pressure drop, low liquid holdup, and high operational flexibility. In recent years, substantial progress has been made in the research of packed columns, especially the development of new packing materials, which has enabled packed columns to be widely used in actual industry. At the same time, in order to support the development of new packing materials and the scaling up of packed columns, various high-performance column internals have also been greatly developed.

[0003] Internal components of packed columns are essential for achieving optimal contact between the gas and liquid phases on the packing surface, maximizing mass transfer efficiency and increasing production capacity. Uniform liquid phase distribution across the column cross-section is crucial for efficient separation in packed columns; therefore, liquid distributors play a vital role in absorption, desorption, and distillation processes. Their distribution effect not only impacts the mass transfer performance of the packing but also influences its operational flexibility. Consequently, as a critical component of packed columns, liquid distributors are receiving increasing attention.

[0004] Based on structural classification, traditional liquid distributors include tubular liquid distributors, trough liquid distributors, and disc liquid distributors. Liquid distribution quality is a key aspect of liquid distributor design. In existing technologies, liquid guiding angle steel or liquid distribution plates are generally used for liquid guiding and distribution. After the liquid flows out of the distribution hole of the trough, it will flow down and be distributed along the guiding angle steel or liquid distribution plate. For example, CN221016087U discloses a flow guiding type liquid distributor with guiding angle steel. However, due to the narrowing space of the guiding angle steel, if the liquid is dirty or viscous, it is easy to clog. When using a liquid distribution plate, sometimes the liquid flows down the liquid distribution plate and forms a continuous sheet, which is not conducive to liquid distribution.

[0005] Traditional liquid distributors generally suffer from problems such as few distribution points, uneven distribution, and susceptibility to clogging. Therefore, developing a high-efficiency, clogging-resistant liquid distributor is an urgent technical problem to be solved. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model discloses a flow-guiding chain liquid distributor, which is a high-efficiency distribution device with multiple liquid distribution points, uniform distribution, strong anti-clogging ability, high operational flexibility, and large processing capacity. This device can improve the separation efficiency of distillation columns and reduce subsequent maintenance costs, and has broad market prospects.

[0007] To achieve the above technical objectives, this utility model proposes a flow-guiding chain liquid distributor, including a primary tank, a distribution box, and a secondary tank, wherein the lower part of the primary tank is connected to the distribution box, and the lower part of the distribution box is connected to the secondary tank;

[0008] The side plate of the secondary tank is provided with a liquid distribution hole. Above the liquid distribution hole is a first baffle plate at an angle to the side plate of the secondary tank. The lower part of the first baffle plate is connected to a flow guide chain. The projection of the flow guide chain on the side plate of the secondary tank does not cover the liquid distribution hole.

[0009] This utility model's liquid distributor, through a guide chain connected to the lower part of the first baffle plate, allows the liquid flowing out from the side plate distribution holes of the secondary tank to disperse into multiple droplets as it flows down the guide chain. This significantly increases the number of distribution points, resulting in uniform liquid distribution and more thorough gas-liquid contact, thereby greatly improving gas-liquid mass transfer efficiency. The guide chain has large gaps, allowing even liquids containing many impurities or with high viscosity to flow down without easily clogging, extending the service life of the distillation column and reducing maintenance and cleaning costs. Simultaneously, the guide chain offers high operational flexibility and a large processing capacity, making it suitable for various operating conditions such as distillation, water washing, and desulfurization, and has promising application prospects.

[0010] Furthermore, the flow guide chain includes multiple flow guide units connected in series, each flow guide unit including a flow guide ring, or multiple flow guide rings not on the same plane.

[0011] The flow guiding chain of this invention is a system composed of multiple flow guiding units connected in series. Each flow guiding unit is connected to an adjacent flow guiding unit, forming a continuous and orderly chain structure. The flow guiding unit is the basic component of the flow guiding chain, and each unit has a specific flow guiding function. The flow guiding unit can be a simple ring structure, which can effectively guide liquid flow. Alternatively, the flow guiding unit can consist of multiple flow guiding rings that are not on the same plane. These rings are connected or nested in different ways to form a three-dimensional and complex flow guiding structure. This structure can more flexibly guide fluid flow in multiple directions or at multiple levels, thereby meeting more complex flow guiding requirements. Optionally, the flow guiding unit of this invention is a three-dimensional ring with a specific curvature.

[0012] Furthermore, the guide ring can be any of the following shapes: circular, triangular, or teardrop-shaped.

[0013] Circular guide rings are uniform and symmetrical, providing good hydrodynamic performance. In a flow chain, circular guide rings can ensure that the liquid maintains a stable pressure and velocity distribution during flow, reducing energy loss and eddy generation.

[0014] The triangular guide ring has a unique geometry and flow guiding characteristics. It has a high fluid pressure gradient, which can more effectively guide the liquid to flow along a predetermined path and improve the flow guiding efficiency.

[0015] The teardrop-shaped flow guide ring combines the advantages of circles and triangles, featuring smoother lines and lower fluid resistance. It reduces energy loss during fluid flow, improving flow efficiency. Furthermore, the teardrop-shaped flow guide ring exhibits good self-cleaning properties, minimizing the deposition of impurities and particulate matter in the fluid on its surface.

[0016] Furthermore, the diameter of the guide ring is 5 to 200 mm. Since the guide ring of this utility model can be selected in various forms, the most suitable size can be determined according to specific needs and conditions, but the diameter range is 5 to 200 mm.

[0017] For example, the outer diameter of the circular guide ring is 5 to 200 mm, or the maximum lateral width of the triangular guide ring is 5 to 200 mm, or the maximum lateral width of the teardrop-shaped guide ring is 5 to 200 mm.

[0018] Furthermore, the angle between the side plate of the secondary tank and the first baffle plate is α, and the range of α is: 90°≤α<180°. The first baffle plate can both block the upward splashing liquid, allowing the liquid to flow downward along the guide chain, and fix the guide chain. The angle between the side plate of the secondary tank and the first baffle plate of this invention cannot be less than 90°. If it is less than 90°, it will affect the fixation of the guide chain. The size of the angle α affects the flow path and distribution uniformity of the liquid, and is preferably 90°.

[0019] Furthermore, the first baffle plate is connected to the second baffle plate. Adding the second baffle plate further improves the structure of the liquid distributor, guiding the liquid to flow along a predetermined path. This guiding effect reduces splashing and spraying, allowing the liquid to flow more smoothly through the guide chain, thereby improving the uniformity and stability of liquid distribution. Preferably, the angle between the second baffle plate and the side plate of the secondary tank is no greater than 90°; more preferably, the second baffle plate is parallel to the side plate of the secondary tank.

[0020] Furthermore, the end face of the second liquid baffle is provided with several protrusions, each of which has a serrated or arc-shaped end face. The grooves of the protrusions allow for sufficient contact between the gas and liquid phases, while the serrated and arc-shaped structures serve to distribute the liquid. The liquid falls along the tips of the teeth or the semi-circular bottom and is distributed, increasing the number of distribution points. Compared with the traditional one-piece liquid distribution plate, the second liquid baffle of this invention not only increases the number of distribution points, solving the problem that the liquid flowing down the one-piece liquid distribution plate will connect into a sheet, resulting in an unsatisfactory distribution effect, but also increases the contact area between the gas and liquid phases, making gas-liquid mass transfer more complete, thereby improving mass transfer efficiency.

[0021] For example, the lower part of the second baffle is in the shape of the Great Wall and each protrusion has a number of serrations, or in the shape of the Great Wall and each protrusion has a number of semicircles.

[0022] Furthermore, the height of the protrusion is 5 to 80 mm, and / or, a plurality of the protrusions are spaced apart or adjacent to each other; preferably, when a plurality of the protrusions are spaced apart, the distance between the protrusions is 10 to 200 mm.

[0023] It should be noted that the heights of the protrusions in this utility model can be the same or different. Preferably, the heights of the protrusions are the same and each protrusion is within the range of 5 to 80 mm. And / or, adjacent protrusions are spaced apart, and the distance of each space can be the same or different. Preferably, the space is equidistant and within the range of 10 to 200 mm.

[0024] Furthermore, the orifice diameter of the liquid distribution hole is 1–200 mm. When the orifice diameter is too small, the resistance to liquid flow through the hole increases, leading to poor liquid outflow and affecting the uniformity of liquid distribution. Although a larger orifice diameter can reduce the resistance to liquid outflow, an excessively large orifice diameter may result in an excessively large liquid flow rate, causing the liquid to remain on the distributor for too short a time, making it difficult to form a uniform liquid film and thus affecting the uniformity of liquid distribution. Therefore, the orifice diameter of the liquid distribution hole in this invention is 1–200 mm. Within this range, the liquid can pass smoothly through the hole and form a uniform liquid film on the distributor, which is beneficial to the uniform distribution of the liquid.

[0025] Furthermore, a buffer tank is set up in the primary tank. The liquid flows into the buffer tank in the primary tank. The buffer tank is filled with buffer packing, which plays a buffering role and can reduce the impact force of the liquid.

[0026] Several secondary tanks are connected by connecting channels to ensure that the liquid in the secondary tanks remains at the same level. This helps to achieve uniform liquid distribution and avoids situations where there is too much or too little liquid in certain areas, thereby optimizing the contact effect between the liquid and the packing or catalyst.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: The liquid distributor of this utility model is equipped with a flow guide chain, which increases the number of liquid distribution points and makes the liquid distribution uniform, resulting in more sufficient gas-liquid contact and thus greatly improving the gas-liquid mass transfer efficiency; at the same time, it prevents equipment blockage, has high operational flexibility and large processing capacity, and is suitable for various operating conditions such as distillation, water washing, and desulfurization, and has good application prospects. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of a flow-guiding chain liquid distributor according to Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of a flow guide chain according to Embodiment 2 of this utility model;

[0031] Figure 3 This is a structural relationship between a first baffle plate, a second baffle plate, and a secondary tank in Embodiment 3 of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of a second liquid baffle according to Embodiment 3 of this utility model;

[0033] Figure 5 This is a front view of a flow-guiding chain liquid distributor according to Embodiment 4 of this utility model;

[0034] Figure 6 This is a top view of a flow-guiding chain liquid distributor according to Embodiment 4 of this utility model.

[0035] The above-mentioned attached drawings include the following reference numerals: 1, primary tank; 2, distribution box; 3, secondary tank; 41, first baffle plate; 42, second baffle plate; 5, distribution hole; 6, guide chain; 61, guide ring; 7, buffer tank; 8, connecting tank; 9, connecting plate; 10, supporting angle steel; 11, connecting angle steel. Detailed Implementation

[0036] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below, along with preferred embodiments. However, it should be understood that these embodiments are for more detailed explanation only and should not be construed as limiting the utility model in any way, i.e., they do not limit the scope of protection of this utility model.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed," "connected," and "linked" 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.

[0039] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] The present invention will be further described below with reference to the accompanying drawings.

[0041] Example 1

[0042] A type of flow-guiding chain liquid distributor, such as Figure 1 As shown, it includes a primary tank 1, a distribution box 2, a secondary tank 3, a first baffle plate 41, a distribution hole 5, and a guide chain 6. The lower part of the primary tank 1 is connected to the distribution box 2, and a secondary tank 3 is connected directly below each distribution box 2. The side plate of the secondary tank is provided with a distribution hole 5. The first baffle plate 41 is set above the distribution hole 5 at an angle to the side plate of the secondary tank 3. The lower part of the first baffle plate is connected to the guide chain 6. The projection of the guide chain 6 on the side plate of the secondary tank 3 does not cover the distribution hole 6.

[0043] The working process of the guide chain liquid distributor of this utility model is as follows: the liquid first flows into the primary tank 1; after the liquid flows out of the primary tank 1, it flows out from the distribution box 2 at the bottom of the primary tank 1 and flows down to the secondary tank 3, completing the primary distribution of the liquid; the liquid flows out from the distribution hole 5 of the secondary tank 3, completing the secondary distribution; the liquid flowing out from the distribution hole 5 is blocked by the first baffle plate 41, causing the liquid to be dispersed into multiple droplets along the guide chain 6 and flow down, completing the tertiary distribution, which greatly increases the number of distribution points. Since the guide chain 6 has a large porosity, the gas-liquid contact is more sufficient and it is not easy to be blocked.

[0044] Compared with traditional liquid distribution plate type liquid distributors and liquid distribution angle steel type liquid distributors, the flow guiding chain type liquid distributor of this utility model has a mass transfer efficiency that is 10% to 20% higher and an anti-clogging ability that is 20% to 40% higher.

[0045] Optionally, the angle between the side plate of the secondary tank 3 and the first baffle plate 41 is α, and the range of α is: 90°≤α<180°.

[0046] Optionally, the distribution boxes 2 are arranged uniformly along the radial direction of the distillation column, with equal spacing and parallel to each other.

[0047] Optionally, the secondary cells 3 are arranged uniformly along the radial direction of the distillation column, with equal spacing and parallel to each other.

[0048] Optionally, the primary tank 1 and the secondary tank 3 are spatially perpendicular. When the liquid flows from the primary tank 1 into the secondary tank 3, due to the effect of gravity, the liquid will be more evenly distributed in the secondary tank 3, which helps to reduce the non-uniformity of the liquid during the distribution process and improve the uniformity of the liquid distribution.

[0049] Optionally, the width of the first-level groove 1 can range from 50 to 600 mm.

[0050] Optionally, the width of the secondary groove 3 can range from 30 to 500 mm.

[0051] Optionally, the diameter of the liquid distribution hole 5 is 1 to 200 mm.

[0052] Example 2

[0053] Based on the flow-guiding chain liquid distributor shown in Example 1, the structure of the flow-guiding chain has been optimized in this example.

[0054] Optionally, the flow guide chain 6 includes multiple flow guide units connected in series, each flow guide unit including a flow guide ring 61, or multiple flow guide rings 61 not on the same plane. The number of flow guide units and flow guide rings 61 can be selected according to specific operating conditions.

[0055] Optionally, the guide ring 61 can be any one of a circle, a triangle, or a teardrop shape.

[0056] Optionally, the maximum diameter of the guide ring 61 is 5 to 200 mm. For example, the outer diameter of the circular guide ring is 5 to 200 mm, or the maximum lateral width of the triangular guide ring is 5 to 200 mm, or the maximum lateral width of the teardrop-shaped guide ring is 5 to 200 mm.

[0057] like Figure 2 An optional example of the flow guide chain of the present invention is shown. The flow guide chain 6 includes four flow guide units connected in series. Each flow guide unit consists of two vertically intersecting circular flow guide rings 61 with an outer diameter of 50 mm.

[0058] Example 3

[0059] Based on the flow-guiding chain liquid distributor shown in Embodiment 1, the positional relationship and structure of the second baffle plate have been optimized in this embodiment.

[0060] Optionally, the first baffle plate 41 is connected to the second baffle plate 42. Preferably, the angle between the second baffle plate 42 and the side plate of the secondary tank 3 is no greater than 90°. More preferably, the second baffle plate 42 is parallel to the side plate of the secondary tank 3.

[0061] Optionally, the lower part of the second baffle plate 42 is in the shape of the Great Wall and each protrusion has a number of serrations; or it is in the shape of the Great Wall and each protrusion has a number of semicircles.

[0062] Optionally, the height of the protrusion is 5 to 80 mm, and / or adjacent protrusions are spaced apart by a distance of 10 to 200 mm.

[0063] like Figure 3 As shown, each secondary tank 3 has several evenly distributed liquid distribution holes 5 on its side plate. A first baffle plate 41 is set above the liquid distribution holes 5 at a 90° angle to the side plate of the secondary tank 3. A second baffle plate 42 is set at the other end of the first baffle plate 41 and is parallel to the side plate of the secondary tank 3. The first baffle plate 41 and the second baffle plate 42 are perpendicular to each other. The lower part of the first baffle plate is connected to a guide chain 6. The projection of the guide chain 6 on the side plate of the secondary tank 3 does not cover the liquid distribution holes 5.

[0064] like Figure 4 As shown, the first baffle plate 41 and the second baffle plate 42 are perpendicularly connected to each other; the lower part of the second baffle plate 42 is in the shape of a Great Wall and each protrusion is provided with several serrations, the height of the groove between the protrusions is 50mm and the length is 100mm.

[0065] Example 4

[0066] Based on the flow-guiding chain liquid distributor shown in Embodiment 1, this embodiment also includes a buffer tank 7, a connecting tank 8, a connecting plate 9, a supporting angle steel 10, and a connecting angle steel 11.

[0067] like Figure 5 As shown, the primary tank 1 is fixedly installed on the inner side of the distillation column wall using connecting plate 9. The buffer tank 7 is fixedly installed inside the primary tank 1 using supporting angle steel 10. The secondary tanks 3 are connected by connecting channels 8, and the primary tank 1 and secondary tanks 3 are fixed together by connecting angle steel 11. Figure 6 A top view of a flow-guided chain liquid distributor is shown.

[0068] It should be noted that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions; the dimensional data in this embodiment do not necessarily limit the technical solution, but merely illustrate one specific working condition. For those skilled in the art to which this invention pertains, several simple improvements and modifications can be made without departing from the concept of the present invention, and all such improvements and modifications should be considered to fall within the scope of protection of the present invention.

Claims

1. A flow-guiding chain liquid distributor, characterized in that, The application relates to a liquid distribution device, which comprises a primary tank (1), a distribution box (2) and a secondary tank (3), wherein the lower part of the primary tank (1) is connected with the distribution box (2), and the lower part of the distribution box (2) is connected with the secondary tank (3). The side plate of the secondary tank (3) is provided with a liquid distribution hole (5), the upper part of the liquid distribution hole (5) is provided with a first liquid blocking plate (41) which is at an angle with the side plate of the secondary tank (3), the lower part of the first liquid blocking plate (41) is connected with a flow guide chain (6), and the projection of the flow guide chain (6) on the side plate of the secondary tank (3) covers the liquid distribution hole (5).

2. A flow-guided chain liquid distributor according to claim 1, characterized in that, The flow guide chain (6) comprises a plurality of flow guide units connected in series, and each flow guide unit comprises a flow guide ring (61) or a plurality of flow guide rings (61) which are not in the same plane.

3. A flow-guided chain liquid distributor according to claim 2, characterized in that The flow guide ring (61) is in any one of a circular shape, a triangular shape and a water drop shape.

4. A flow-guided chain liquid distributor according to claim 2 or 3, characterized in that The diameter of the flow guide ring (61) is 5-200 mm.

5. A flow guide chain liquid distributor according to claim 1, wherein, The angle between the side plate of the secondary tank (3) and the first liquid blocking plate (41) is alpha, and the range of alpha is 90 DEG <= alpha < 180 DEG.

6. A flow guide chain liquid distributor according to claim 1, wherein, The first liquid blocking plate (41) is connected with a second liquid blocking plate (42).

7. A flow-guided chain liquid distributor according to claim 6, characterized in that The end surface of the second liquid blocking plate (42) is provided with a plurality of protrusions, and the end surface of each protrusion is in a sawtooth shape or a circular arc tooth shape.

8. A flow-guided chain liquid distributor according to claim 7, characterized in that The height of each protrusion is 5-80 mm. The plurality of protrusions are arranged at intervals or are arranged in abutment.

9. A flow guide chain liquid distributor according to claim 1, wherein, The aperture of the liquid distribution hole (5) is 1-200 mm.

10. A flow guide chain liquid distributor according to claim 1, wherein A buffer tank (7) is arranged in the primary tank (1). The plurality of secondary tanks (3) are connected through a communication tank (8).

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