A deviated flow stripping column

Abstract

The utility model provides a kind of anti-deviation flow stripping column, belong to stripping column technical field, including tray assembly, overflow assembly and cylinder body.The tray assembly includes multiple longitudinal distribution trays, the tray surface is equipped with multiple steam cylinder, the tray one side is provided with overflow plate, the side of the overflow plate away from tray is equipped with buffer uniform flow plate.Through being provided with buffer uniform flow plate in the side of the overflow plate away from tray, buffer uniform flow plate is L-shaped cross section, the liquid that passes through the top end of overflow plate is collected again, the liquid that flows to two trays is dispersed and collected again, reduce the flow height of liquid that flows on overflow plate, increase the uniformity of liquid that flows to next tray after overflowing on overflow plate, prevent the uneven dispersion of liquid on next tray after flowing out from overflow plate.

Description

Technical Field

[0001] This utility model belongs to the field of stripping tower technology, specifically referring to a stripping tower with anti-deviation flow. Background Technology

[0002] Stripping is a unit operation used to recover absorbed solutes and separate the absorbent from the solute for regeneration. In some cases, stripping is also used to remove light components from liquids, such as in the oil refining industry where steam is often used as a stripping agent to remove light components from oil products. Therefore, stripping can be used in conjunction with absorption or alone.

[0003] Existing stripping towers use overflow plates to ensure that liquid phase accumulates to a certain depth on the surface of the plates. After overflowing from the top of the overflow plate, the liquid phase flows to the next plate. The direction of liquid phase accumulation on the next plate is mainly determined by the top of the overflow plate, leading to irregular flow and accumulation. During this accumulation process, uneven packing and lower resistance in looser areas cause liquid to preferentially flow through, forming channeling and resulting in potential flow deviation within the stripping tower. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide an anti-deviation stripping tower, so as to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: A stripping tower with anti-deviation flow is proposed, including a tray assembly, including multiple longitudinally arranged trays, and several uniformly arranged steam cylinders are provided on the surface of the trays; an overflow assembly, including an overflow plate disposed on one side of the tray, with the overflow plates on two adjacent trays located on opposite sides, and at least one buffer flow equalization plate disposed on the side of the overflow plate away from the tray, the cross-section of the buffer flow equalization plate being L-shaped; wherein, the overflow assembly is configured such that the liquid component overflows from the surface of the tray through the top of the overflow plate and flows into the groove of the buffer flow equalization plate and is dispersed and evenly distributed.

[0006] Furthermore, the anti-deviation stripping tower also includes a cylindrical body, the tray assembly and the overflow assembly are disposed inside the cylindrical body, and the other side of the tray with the overflow plate is connected to the inner wall of the cylindrical body through a liquid receiving tray.

[0007] Furthermore, the bottom of the overflow plate is connected to the receiving tray of the next tray, and the bottom of the overflow plate narrows on both sides.

[0008] Furthermore, the top surface of the overflow plate is provided with a plurality of continuously distributed first overflow weir grooves, and the top surface of the buffer flow equalization plate is provided with a plurality of continuously distributed second overflow weir grooves, and the second overflow weir grooves are lower than the first overflow weir grooves.

[0009] Furthermore, a liquid receiving area is formed between the side of the buffer flow equalization plate away from the tray and the inner wall of the cylinder, and both ends of the overflow plate and the buffer flow equalization plate located above the tray are sealed and connected to the inner wall of the cylinder. Beneficial effects

[0010] A buffer flow equalization plate, positioned on the side of the overflow plate furthest from the tray, has an L-shaped cross-section. This plate collects the liquid passing over the top of the overflow plate and redistributes and gathers the liquid flowing between the two trays. This reduces the drop height of the liquid flowing down the overflow plate and increases the uniformity of the liquid's flow and dispersion to the next tray after overflowing. It also prevents uneven dispersion of the liquid on the next tray after it flows out of the overflow plate, which could cause flow deviation. Attached Figure Description

[0011] Figure 1 A three-dimensional schematic diagram of the anti-deviation stripping tower proposed in this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the internal structure of the anti-deviation stripping tower proposed in this utility model; Figure 3 This is a three-dimensional enlarged schematic diagram of a portion of the anti-deviation stripping tower proposed in this utility model. Figure 4 This is a three-dimensional enlarged schematic diagram of the tray assembly of the anti-deviation stripping tower proposed in this utility model.

[0012] Among them, 1. tray assembly; 101. tray; 102. steam cylinder; 2. overflow assembly; 201. overflow plate; 202. buffer flow equalization plate; 3. cylinder body; 4. first overflow weir; 5. second overflow weir; 6. liquid receiving area.

[0013] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0015] As mentioned earlier, existing stripping towers use overflow plates to ensure that liquid phase accumulates to a certain depth on the surface of the plates. After overflowing from the top of the overflow plate, the liquid phase flows to the next plate. The direction of liquid phase accumulation on the next plate is mainly determined by the top of the overflow plate, making it prone to irregular flow and accumulation. During this accumulation process, uneven packing and lower resistance in looser areas allow liquid to flow preferentially through, forming channeling and causing flow deviation within the stripping tower.

[0016] To address this issue, the present invention provides an anti-deviation stripping tower, which allows the liquid flowing through the overflow plate 201 on the side away from the tray 101 to be collected again by a buffer flow equalization plate 202 with an L-shaped cross-section. This process further disperses and collects the liquid flowing between the two trays 101, reducing the drop height of the liquid flowing down the overflow plate 201 and increasing the uniformity of the liquid flow and dispersion to the next tray 101 after overflowing from the overflow plate 201. This prevents the liquid from flowing unevenly from the overflow plate 201 onto the next tray 101, thus avoiding deviation.

[0017] like Figures 1-4 As shown in the figure, this utility model embodiment provides a stripping tower, particularly an anti-deviation stripping tower, including a tray assembly 1, an overflow assembly 2, and a cylindrical body 3. The stripping tower is arranged from bottom to top as a base, a skirt, and a cylindrical body 3. The top and bottom ends of the cylindrical body 3 are sealed by sealing elements. A light component outlet is provided at the top of the cylindrical body 3, and a heavy component outlet is provided at the bottom of the cylindrical body 3. The heavy component outlet extends out through the outer side of the skirt. A steam inlet pipe is provided on one side of the cylindrical body 3, and a reboiler is provided inside the cylindrical body 3 at the location where the tray assembly 1 is located.

[0018] The tray assembly 1 includes multiple trays 101 arranged evenly from top to bottom inside the cylinder 3. Each tray 101 has several evenly distributed steam cylinders 102 on its surface. The bottom of the tray 101 has a small hole that penetrates into the inside of the steam cylinder 102. The small hole extends to the bottom edge of the top protrusion inside the steam cylinder 102. The heavy liquid components inside the stripping tower submerge the hole at the bottom edge of the top protrusion of the steam cylinder 102. After high-temperature steam is blown into the interior of the liquid components, the high-temperature steam lifts and separates some of the components in the liquid, which are finally separated from the top of the cylinder 3. The residual components in the liquid flow out from the heavy components at the bottom of the cylinder 3.

[0019] One side of the tray 101 is connected to the inner wall of the cylinder 3 via a liquid receiving tray, and the liquid receiving trays on two adjacent trays 101 are on opposite sides. An overflow plate 201 is provided on the other side of each tray 101 where the liquid receiving tray is located. A buffer flow equalization plate 202 is provided on the side of the overflow plate 201 away from the tray 101. Multiple continuous first overflow weirs 4 are formed at the top of the overflow plate 201, and multiple continuous second overflow weirs 5 are formed at the top of the buffer flow equalization plate 202, with the second overflow weirs 5 being lower than the first overflow weirs. 4. The first overflow weir 4 is higher than the tray 101. After the liquid on the tray 101 rises to the surface of the first overflow weir 4, the liquid overflows and flows downward into the L-shaped groove of the buffer equalization plate 202. Then, it flows through the liquid receiving area 6 formed between the side of the buffer equalization plate 202 away from the overflow plate 201 and the inner wall of the cylinder 3 to the liquid receiving tray on the next tray 101. The bottom of the overflow plate 201 on the tray 101 is connected to the surface of the next tray 101, and the bottom of the overflow plate 201 narrows towards the middle on both sides. Figure 3 As shown, the liquid flowing from top to bottom is dispersed by the buffer flow equalization plate 202 and then flows into the surface of the next tray 101. Multiple flow holes can be provided at the connection between the overflow plate 201 and the next tray 101 to assist the dispersion and flow of the liquid on the next tray 101.

[0020] Liquid is fed into the interior of the cylinder 3 through a feed pipe located on the side of the cylinder 3. The liquid flows from top to bottom through each tray 101, and the surface of the tray 101 is covered with a uniformly dispersed liquid. The steam at the bottom flows upward, passes through the interior of the steam cylinder 102, and flows out from the interior of the liquid, carrying the components inside the liquid upward. After being dispersed by the first overflow weir 4 at the top of the overflow plate 201, the liquid flows into the interior of the L-shaped buffer equalization plate 202 for further dispersion and equalization. Then it overflows and disperses out through the top of the second overflow weir 5. Inside the liquid receiving area 6, the liquid flows into the surface of the next tray 101 until the heavy components are discharged from the discharge pipe at the bottom of the cylinder 3.

[0021] In summary, this utility model utilizes a buffer flow equalization plate 202 located on the side of the overflow plate 201 away from the tray 101. The buffer flow equalization plate 202 has an L-shaped cross-section, which collects the liquid passing through the top of the overflow plate 201 and redisperses and gathers the liquid flowing between the two trays 101. This reduces the drop height of the liquid flowing down the overflow plate 201, increases the uniformity of the liquid flow and dispersion to the next tray 101 after overflowing from the overflow plate 201, and prevents uneven dispersion of the liquid on the next tray 101 after it flows out of the overflow plate 201, thus preventing flow deviation.

[0022] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A stripping tower for preventing eccentric flow, characterized in that, include: The tray assembly (1) includes multiple longitudinally arranged trays (101), and the surface of the trays (101) is provided with a number of uniformly arranged steam cylinders (102). The overflow assembly (2) includes an overflow plate (201) disposed on one side of the tray (101). The overflow plates (201) on two adjacent trays (101) are located on opposite sides. Each overflow plate (201) is provided with at least one buffer flow equalization plate (202) on the side away from the tray (101). The cross-section of the buffer flow equalization plate (202) is L-shaped. The overflow component (2) is configured such that the liquid component overflows from the surface of the tray (101) through the top of the overflow plate (201) and flows into the groove of the buffer flow equalization plate (202) and is dispersed and evenly distributed.

2. The anti-deviation stripping tower according to claim 1, characterized in that, The anti-deviation stripping tower also includes a cylinder (3), the tray assembly (1) and the overflow assembly (2) are disposed inside the cylinder (3), and the other side of the tray (101) with the overflow plate (201) is connected to the inner wall of the cylinder (3) by a liquid receiving plate.

3. The anti-deviation stripping tower according to claim 1, characterized in that, The bottom of the overflow plate (201) is connected to the liquid receiving tray of the next tray (101), and the bottom sides of the overflow plate (201) are narrowed.

4. The anti-deviation stripping tower according to claim 2, characterized in that, The top surface of the overflow plate (201) is provided with a plurality of continuously distributed first overflow weirs (4), and the top surface of the buffer flow equalization plate (202) is provided with a continuously distributed second overflow weir (5), and the second overflow weir (5) is lower than the first overflow weir (4).

5. The anti-deviation stripping tower according to claim 2, characterized in that, The buffer flow equalization plate (202) forms a liquid receiving area (6) between the side away from the tower plate (101) and the inner wall of the cylinder (3). The overflow plate (201) and the buffer flow equalization plate (202) are both closed and connected to the inner wall of the cylinder (3) at both ends of the portion above the tower plate (101).

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