Novel rectifying tower

Abstract

The utility model relates to a novel rectifying tower which comprises a tower body, an initial distributor and two oppositely-arranged filler parts are sequentially arranged in the tower body from top to bottom, the initial distributor is used for spraying liquid to the surface of the upper filler part, and a liquid redistributor located between the two filler parts is further arranged in the tower body. The liquid redistributor is used for spraying liquid to the surface of the bottom filler part; the liquid redistributor comprises a liquid collecting cylinder arranged in the tower body, and a liquid collecting ring attached to the inner side of the tower body is arranged on the outer side of the liquid collecting cylinder, the initial distributor and the liquid redistributor are used in cooperation, it is ensured that liquid is evenly distributed in the whole tower body, the gas-liquid contact area is increased through even liquid distribution, and the gas-liquid separation efficiency is improved. The mass transfer efficiency and the heat transfer efficiency are improved, so that the rectification efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, and in particular to a novel distillation column. Background Technology

[0002] In food additive production, packed distillation columns are primarily used to separate and purify compounds with specific flavors. For example, distillation technology can separate mixtures of alcohol and water to produce high-proof alcohol, which can be used as a food additive to enhance the taste and flavor of food. Furthermore, packed distillation columns can also be used to extract specific components from edible oils, thus meeting the diverse needs of food additive production.

[0003] In practical applications, when liquid flows downwards within a randomly packed packing layer, it often exhibits a tendency to gradually flow towards the column wall, a phenomenon known as wall flow. Wall flow not only affects the uniform distribution of liquid within the column but can also lead to a decrease in mass transfer efficiency, thereby impacting the separation effect of the entire distillation process. To improve the mass transfer effect of the column, when the ratio of packing height to column diameter exceeds a certain value, the packing layer needs to be segmented. To mitigate the uneven liquid distribution caused by wall flow, liquid redistributors are installed between each packing segment to collect liquid from the previous packing layer, providing a uniform liquid distribution for the next packing layer.

[0004] However, despite this, some existing liquid redistributors used in packed distillation columns suffer from uneven liquid distribution and insufficient contact between the packing and the redistributed liquid, resulting in a reduction in the effective wetted area of ​​the packing layer and thus affecting the separation effect.

[0005] To address the aforementioned problems, a novel distillation column is now designed. Utility Model Content

[0006] This application provides a novel distillation column to solve the problems of uneven liquid distribution and insufficient contact between the packing and the redistributed liquid in the liquid redistributors used in some existing packed distillation columns in the related art.

[0007] Firstly, a novel distillation column is provided, comprising:

[0008] The tower body has an initial distributor and two oppositely arranged packing sections arranged sequentially from top to bottom inside the tower body. The initial distributor is used to spray liquid onto the surface of the upper packing section. The tower body also has a liquid redistributor located between the two packing sections. The liquid redistributor is used to spray liquid onto the surface of the bottom packing section.

[0009] The liquid redistributor includes a liquid collecting cylinder disposed inside the tower body, and a liquid collecting ring is disposed on the outside of the liquid collecting cylinder that fits against the inside of the tower body.

[0010] The liquid collecting ring and the tower body enclose a liquid collecting trough. An inclined plate collector is provided on the liquid collecting cylinder. The inclined plate collector is used to guide the dripping liquid from the top to the liquid collecting trough. A liquid distribution plate is provided at the bottom of the liquid collecting cylinder. The liquid distribution plate is connected to the liquid collecting trough and is used to spray the liquid inside the liquid collecting trough onto the lower packing section.

[0011] In some embodiments, the liquid collecting cylinder is cylindrical and has an internal channel for upward airflow;

[0012] The liquid collecting ring is circular and is arranged at the bottom of the outer side of the liquid collecting cylinder. The outer side of the liquid collecting ring is attached to the inner wall of the tower body and is used to collect the liquid dripping from the inner wall of the tower body.

[0013] In some embodiments, the liquid distribution plate includes an inlet pipe and a distribution pipe that are interconnected, with both ends of the inlet pipe connected to the liquid collection tank.

[0014] The other end of the distribution pipe has multiple ring pipes arranged in a ring-like hierarchy on its outer side, and the distribution pipe and the multiple ring pipes are connected by several adapter pipes.

[0015] Both the annular pipe and the distribution pipe have several spray holes at their bottoms;

[0016] A gap is left between two adjacent annular tubes for gas flow.

[0017] In some embodiments, the nozzles at the bottom of the annular tube are arranged at a relatively inclined angle;

[0018] The nozzles at the bottom of the distribution pipe are evenly distributed.

[0019] In some embodiments, the inclined plate collector includes a plurality of guide plates radially distributed along the liquid collection cylinder. The guide plates are used to collect liquid dripping from the top. The guide plates are Z-shaped and arranged at an incline. Both ends of the guide plates extend into the liquid collection tank to allow the collected liquid to flow into the liquid collection tank. A gas flow channel is formed between two adjacent guide plates.

[0020] In some embodiments, the initial distributor includes a second inlet pipe disposed on the tower body, the other end of which extends into the tower body;

[0021] The outer side of the other end of the liquid inlet pipe has multiple annular pipes distributed in a ring-like layer, and the multiple annular pipes are connected by several adapter pipes.

[0022] The bottom of the annular tube is provided with several annularly distributed nozzles;

[0023] A gap is left between two adjacent annular tubes.

[0024] In some embodiments, the packing section includes a packing pressure plate, a packing material, and a packing support plate arranged sequentially from top to bottom. The packing pressure plate is used to press the packing material, and the packing support plate is used to support the packing material.

[0025] In some embodiments, a demister is provided inside the tower body, located above the initial distributor.

[0026] This application provides a novel distillation column. Through the combined use of an initial distributor and a liquid redistributor, uniform liquid distribution is ensured throughout the column. This uniform liquid distribution increases the gas-liquid contact area, improving mass and heat transfer efficiency, thereby enhancing distillation efficiency. Ensuring uniform liquid distribution on the packing section maximizes the utilization of the packing's surface area, not only improving distillation efficiency but also reducing the packing's operating costs.

[0027] The presence of a liquid redistributor prevents localized accumulation of liquid within the column, reducing uneven liquid distribution and resulting in a more stable distillation process, which is beneficial for the stability of product quality and yield. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this application;

[0030] Figure 2 A front sectional view provided for an embodiment of this application;

[0031] Figure 3 A schematic diagram of the three-dimensional structure of the liquid redistributor provided in the embodiments of this application. Figure 1 ;

[0032] Figure 4 A schematic diagram of the three-dimensional structure of the liquid redistributor provided in the embodiments of this application. Figure 2 ;

[0033] Figure 5 A three-dimensional schematic diagram of the dispensing tray provided in the embodiments of this application;

[0034] Figure 6 A formal cross-sectional view of the liquid redistributor provided in the embodiments of this application;

[0035] Figure 7 A schematic diagram of the cross-section of the annular tube provided in an embodiment of this application;

[0036] Figure 8 A bottom view of the distribution pipe provided in an embodiment of this application;

[0037] Figure 9 This is a top view of the initial distributor provided in an embodiment of this application.

[0038] In the diagram: 1. Tower body; 2. Initial distributor; 3. Packing section; 4. Liquid redistributor; 41. Liquid collecting cylinder; 42. Liquid collecting ring; 43. Liquid collecting trough; 44. Inclined plate collector; 441. Guide plate; 45. Liquid distribution plate; 451. Inlet pipe one; 452. Distribution pipe; 453. Circular pipe; 454. Transfer pipe; 5. Demister; 6. Spray nozzle; 21. Inlet pipe two; 22. Circular pipe two; 23. Transfer pipe two; 24. Nozzle; 31. Packing pressure plate; 32. Packing; 33. Packing support plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] This application provides a novel distillation column that solves the problems of uneven liquid distribution and insufficient contact between the packing and the redistributed liquid in some existing packed distillation columns.

[0041] Please see Figures 1-4 A novel distillation column includes: a column body 1, wherein an initial distributor 2 and two oppositely arranged packing sections 3 are arranged sequentially from top to bottom inside the column body 1; the initial distributor 2 is used to spray liquid onto the surface of the upper packing section 3; and a liquid redistributor 4 is also arranged inside the column body 1 between the two packing sections 3, wherein the liquid redistributor 4 is used to spray liquid onto the surface of the bottom packing section 3.

[0042] The liquid redistributor 4 includes a liquid collecting cylinder 41 disposed inside the tower body 1, and a liquid collecting ring 42 disposed on the outside of the liquid collecting cylinder 41 and fitting against the inside of the tower body 1.

[0043] The liquid collecting ring 42 and the tower body 1 enclose a liquid collecting trough 43. An inclined plate collector 44 is provided on the liquid collecting cylinder 41. The inclined plate collector 44 is used to guide the upper dripping liquid into the liquid collecting trough 43. A liquid distribution plate 45 is provided at the bottom of the liquid collecting cylinder 41. The liquid distribution plate 45 is connected to the liquid collecting trough 43 and is used to spray the liquid inside the liquid collecting trough 43 onto the lower packing part 3.

[0044] The working principle of this new distillation column mainly revolves around its internal structure, especially the functions of the initial distributor 2 and the liquid redistributor 4.

[0045] When the liquid enters the tower body 1, it is first received by the initial distributor 2. The initial distributor 2 ensures that the liquid can be sprayed evenly on the surface of the upper packing section 3. The evenly distributed liquid forms a liquid film on the packing section 3, which is beneficial to the mass transfer and heat transfer process.

[0046] After passing through the upper packing section 3, some of the liquid drips into the area where the liquid redistributor 4 is located. The inclined plate collector 44 guides this dripping liquid into the collection tank 43, which is formed by the collection ring 42 and the inner side of the tower body 1, serving to collect and temporarily store the liquid. The liquid in the collection tank 43 is then evenly sprayed onto the lower packing section 3 through the distribution plate 45.

[0047] The separator 45 ensures the uniform distribution of liquid, allowing the lower packing section 3 to be fully utilized and improving distillation efficiency.

[0048] The combined use of the initial distributor 2 and the liquid redistributor 4 ensures uniform distribution of the liquid throughout the column. This uniform liquid distribution increases the gas-liquid contact area, improves mass and heat transfer efficiency, and thus enhances distillation efficiency.

[0049] The presence of the liquid redistributor 4 prevents local accumulation of liquid within the column, reduces uneven liquid distribution, and makes the distillation process more stable, which is beneficial to the stability of product quality and yield.

[0050] By ensuring uniform distribution of liquid on packing section 3, the surface area of ​​the packing is maximized, which not only improves distillation efficiency but also reduces the cost of using the packing.

[0051] In this embodiment, the tower body 1 is provided with an exhaust port and an air inlet. The exhaust port is located at the top of the tower body 1, and the air inlet is located below the lower packing section 3. A drain pipe is provided at the bottom of the tower body 1.

[0052] In this embodiment, the tower body 1 is also provided with an exhaust port, an air inlet, and a liquid drain pipe.

[0053] The exhaust port is located at the top of column 1 and is used to discharge gases generated during the distillation process, typically light components or volatile substances. As distillation proceeds, these gases gradually rise within the column and are discharged through the exhaust port, achieving effective separation from the liquid.

[0054] The air inlet is located below the lower packing section 3 and is used to introduce the mixed gas or vapor to be distilled. These gases come into contact with the packing inside the column, undergoing mass and heat transfer processes, thereby achieving component separation.

[0055] The drain pipe at the bottom of column 1 is used to discharge the liquid after distillation, which is usually heavy components or non-volatile substances. After sufficient contact and separation with the gas inside the column, these liquids are discharged through the drain pipe, achieving effective separation from the gas.

[0056] The optimized placement of the exhaust and inlet ports ensures effective gas flow and separation within the tower. Gas enters through the inlet, passes through the packing section 3, and comes into full contact with the liquid. Lighter components are then discharged through the exhaust port, while heavier components remain inside the tower or are discharged through the drain pipe. This design significantly improves the separation efficiency of the components.

[0057] In one embodiment, such as Figure 4 and Figure 6 As shown, the liquid collecting cylinder 41 is cylindrical and has an internal channel for upward airflow; the liquid collecting ring 42 is annular and is arranged at the bottom of the outer side of the liquid collecting cylinder 41. The outer side of the liquid collecting ring 42 is attached to the inner wall of the tower body 1 and is used to collect the liquid dripping from the inner wall of the tower body 1.

[0058] The liquid collecting cylinder 41 has a cylindrical structure with an internal channel for upward airflow, ensuring that the gas can continue to rise smoothly after passing through the packing section 3, enter the channel inside the liquid collecting cylinder 41, and continue to flow towards the top of the tower.

[0059] The wall of the liquid collecting cylinder 41 has a certain thickness to increase its strength and stability.

[0060] The inner side of the liquid collecting cylinder 41 is smoothed to reduce airflow resistance.

[0061] The liquid collecting ring 42 has a circular structure and is arranged at the bottom of the outside of the liquid collecting cylinder 41. Its outer side is closely attached to the inner wall of the tower body 1, forming a semi-enclosed space, namely the liquid collecting tank 43.

[0062] The liquid dripping from the inner wall of the tower body 1 is collected by the combination of the liquid collection tank 43 and the liquid collection ring 42.

[0063] The airflow channel inside the liquid collecting cylinder 41 ensures smooth gas flow within the tower, helps reduce airflow resistance, increases the gas rising speed, thereby increasing the contact time and contact area between the gas and the packing, and improving mass transfer efficiency.

[0064] The liquid collection ring 42 enhances the liquid collection capacity of the inner wall of the tower body 1.

[0065] As a preferred embodiment, such as Figure 4 , Figure 5 and Figure 6 As shown, the liquid distribution plate 45 in this embodiment includes an inlet pipe 451 and a distribution pipe 452 that are connected to each other. The two ends of the inlet pipe 451 are respectively connected to the liquid collection tank 43.

[0066] The outer side of the other end of the distribution pipe 452 has a plurality of annular pipes 453 arranged in a ring-like layer. The distribution pipe 452 and the plurality of annular pipes 453 are connected by a plurality of adapter pipes 454. The plurality of adapter pipes 454 are arranged in a ring at the bottom of the distribution pipe 452. The other end of the adapter pipe 454 passes through the annular pipes 453 in sequence and connects to the outermost annular pipe 453. The distribution pipe 452, the annular pipes 453 and the adapter pipes 454 are interconnected. The bottom of the annular pipes 453 and the distribution pipe 452 are provided with a plurality of spray holes 6. A gap for gas flow is left between two adjacent annular pipes 453.

[0067] The liquid distribution plate 45 consists of an inlet pipe 451 and a distribution pipe 452, which are connected to each other. The two ends of the inlet pipe 451 are connected to the liquid collection tank 43 respectively, and are used to receive the liquid in the liquid collection tank 43.

[0068] The other end of the distribution tube 452 has multiple annular tubes 453 distributed in a ring-like layer on the outer side. These annular tubes 453 are arranged in concentric circles with the distribution tube 452 as the center.

[0069] The distribution pipe 452 and multiple annular pipes 453 are connected by several adapter pipes 454. These adapter pipes 454 are arranged in a ring at the bottom of the distribution pipe 452. One end of each adapter pipe 454 is connected to the distribution pipe 452, and the other end passes through each annular pipe 453 in sequence, and finally connects to the outermost annular pipe 453, so that the multiple annular pipes 453 are interconnected and connected to the distribution pipe 452.

[0070] The nozzle 6 is used to spray liquid evenly onto the lower filler section 3.

[0071] A gap is left between two adjacent annular tubes 453 for gas flow. The gap ensures that the gas can pass smoothly through the liquid distribution plate 45, avoiding gas flow resistance caused by uneven liquid distribution.

[0072] The liquid in the collection tank 43 is introduced into the distribution pipe 452 through the inlet pipe 451, and then distributed to each annular pipe 453 through the transfer pipe 454. Finally, it is evenly sprayed onto the lower packing section 3 through the spray hole 6, ensuring the uniform distribution of liquid on the entire packing section and improving the mass transfer efficiency.

[0073] The separator 45 is compact and efficient, making full use of the space within the column body 1. Through its rational layout and connection, it achieves uniform liquid distribution and smooth gas flow, improving the overall performance of the distillation column.

[0074] Furthermore, such as Figure 7 and Figure 8 As shown, the nozzles 6 at the bottom of the annular pipe 453 are arranged at relative inclinations; the nozzles 6 at the bottom of the distribution pipe 452 are distributed at equal intervals.

[0075] The nozzle 6 at the bottom of the annular tube 453 is at a relatively inclined angle. This inclined setting helps the liquid to obtain a certain tangential velocity when sprayed, thereby promoting the uniform distribution of the liquid on the packing section 3. The inclined nozzle can also reduce the pressure loss caused by the liquid directly impacting the packing, and improve the liquid dispersion effect.

[0076] The nozzles 6 at the bottom of the distribution pipe 452 are evenly distributed to ensure that the liquid can be sprayed out evenly from the distribution pipe 452. This even distribution helps to achieve uniform coverage of the liquid on the entire packing section 3, ensuring full coverage of the lower packing section 3.

[0077] In one embodiment, such as Figure 3 and Figure 6 As shown, the inclined plate collector 44 includes multiple guide plates 441 radially distributed along the liquid collection cylinder 41. The guide plates 441 collect the liquid dripping from the upper part. The guide plates 441 are Z-shaped and arranged at an incline. Both ends of the guide plates 441 extend into the liquid collection tank 43 to allow the collected liquid to flow into the tank. A gas flow channel is formed between adjacent guide plates 441. The guide plates 441 and the inlet pipe 451 are connected by a fixing rod, which supports the guide plates 441. The two ends of the guide plates 441 are arc-shaped, matching the inner wall of the tower body 1.

[0078] The inclined plate collector 44 is installed above the liquid collection cylinder 41, and its main function is to collect the liquid falling from above.

[0079] The baffle 441 is designed in a Z-shape and is arranged at an angle, which enables the baffle 441 to effectively intercept and guide the liquid flowing down from above. The Z-shaped structure also increases the surface area of ​​the baffle, thereby improving the efficiency of liquid collection.

[0080] Meanwhile, both ends of the guide plate 441 extend into the liquid collection tank 43, which means that when the guide plate 441 collects liquid, the liquid will flow into the liquid collection tank 43 along the guide plate 441, thereby realizing the collection and centralized treatment of liquid.

[0081] In addition, a gas flow channel is formed between two adjacent guide plates 441, ensuring that the gas in the tower can flow smoothly and will not accumulate or generate excessive resistance due to the obstruction of the guide plates 441.

[0082] To support and fix the guide plate 441, it is connected to the inlet pipe 451 by a fixing rod, which not only provides the necessary support force, but also ensures the stability of the guide plate 441 in long-term use.

[0083] It is worth noting that the two ends of the guide plate 441 are designed to be arc-shaped, which matches the inner wall of the tower body 1, reducing friction and wear between the guide plate 441 and the inner wall of the tower body 1, and also improving the overall coordination between the guide plate and the tower body.

[0084] In one embodiment, such as Figure 2 and Figure 9 As shown, the initial distributor 2 includes a liquid inlet pipe 21 disposed on the tower body 1, and the other end of the liquid inlet pipe 21 extends into the tower body 1;

[0085] The outer side of the other end of the liquid inlet pipe 21 has multiple annular pipes 22 arranged in a ring-like layer, and these multiple annular pipes 22 are connected by several connecting pipes 23; the bottom of each annular pipe 22 is provided with several annularly distributed nozzles 24; a gap is left between two adjacent annular pipes 22. The bottom of the other end of the liquid inlet pipe 21 is also provided with nozzles 24.

[0086] Liquid inlet pipe 21 serves as the liquid inlet, with its other end extending into the interior of tower body 1. In this way, liquid can enter tower body 1 through liquid inlet pipe 21.

[0087] At the other end of the liquid inlet pipe 21, there are multiple annular pipes 22 arranged in a ring-like layer on the outside. These annular pipes 22 are arranged in a layered manner to ensure that the liquid can be distributed at multiple levels.

[0088] Multiple annular pipes 22 are connected by several transfer pipes 23. The transfer pipes 23 act as bridges, connecting the annular pipes 22 at different levels to form a complete liquid distribution system.

[0089] At the bottom of each annular tube 22, there are several annularly distributed nozzles 24. The nozzles 24 are responsible for spraying the liquid evenly onto the upper filler section 3. Since the nozzles 24 are annularly distributed, it can ensure that the liquid is evenly distributed in all directions below the annular tube 22.

[0090] In addition, the gap between two adjacent annular tubes 22 facilitates gas flow, reduces interference between annular tubes 22, and improves stability.

[0091] It is worth noting that a nozzle 24 is also provided at the bottom of the other end of the liquid inlet pipe 21, so as to achieve full coverage of the upper packing section 3.

[0092] In this implementation plan, such as Figure 2 As shown, the packing section 3 includes a packing pressure plate 31, a packing 32, and a packing support plate 33 arranged sequentially from top to bottom. The packing pressure plate 31 is used to press the packing 32, and the packing support plate 33 is used to support the packing 32.

[0093] The packing pressure plate 31 is located at the top of the packing section 3. Its main function is to press the packing 32 tightly to prevent the packing from loosening or floating inside the tower.

[0094] Packing 32 is the core part of the packing section, providing the surface area required for gas-liquid contact.

[0095] Among them, the packing 32 can be of various shapes and materials, such as Raschig rings, Pall rings, and step rings. These packings have different specific surface areas and porosities, and can be selected according to specific process requirements.

[0096] The packing support plate 33 is located at the bottom of the packing section 3. Its main function is to support the packing 32 and prevent the packing from sinking or accumulating inside the tower.

[0097] Furthermore, such as Figure 2 As shown, in this embodiment, a demister 5 is provided inside the tower body 1 above the initial distributor 2, wherein the demister 5 is a stainless steel wire mesh demister.

[0098] The main function of the demister 5 is to remove liquid droplets, or "foam," entrained in the gas inside the tower 1. These droplets may originate from various processes within the tower, such as liquid evaporation and gas-liquid contact. If these droplets are not treated, they may flow out of the tower with the gas, leading to a decrease in product purity or environmental pollution.

[0099] Demister 5 is positioned above the initial distributor 2 to ensure that the discharged gas is effectively demistered.

[0100] This implementation scheme uses a stainless steel wire mesh demister. This demister is composed of multiple layers of stainless steel wire mesh and has the advantages of simple structure, light weight, and easy installation and maintenance. This is existing technology and will not be described in detail here.

[0101] In practical use, when gas passes through the stainless steel wire mesh demister, droplets are intercepted and accumulated on the mesh layer by layer. As more and more droplets accumulate, they flow down the mesh and are collected in the container below. In this way, droplets in the gas are effectively removed.

[0102] In the description of this application, it should be noted that the terms "upper," "lower," 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 application 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 application. Unless otherwise expressly specified and limited, the terms "installed," "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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0103] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0104] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application 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 claimed herein.

Claims

1. A novel distillation column, characterized in that, include: The tower body (1) has an initial distributor (2) and two oppositely arranged packing sections (3) arranged sequentially from top to bottom inside the tower body (1). The initial distributor (2) is used to spray liquid onto the surface of the upper packing section (3). The tower body (1) also has a liquid redistributor (4) located between the two packing sections (3) inside the tower body (1). The liquid redistributor (4) is used to spray liquid onto the surface of the bottom packing section (3). The liquid redistributor (4) includes a liquid collecting cylinder (41) disposed inside the tower body (1), and a liquid collecting ring (42) is disposed on the outside of the liquid collecting cylinder (41) and fits against the inside of the tower body (1). The liquid collecting ring (42) and the tower body (1) enclose a liquid collecting tank (43). An inclined plate collector (44) is provided on the liquid collecting cylinder (41). The inclined plate collector (44) is used to guide the upper dripping liquid into the liquid collecting tank (43). A liquid separating plate (45) is provided at the bottom of the liquid collecting cylinder (41). The liquid separating plate (45) is connected to the liquid collecting tank (43) and is used to spray the liquid inside the liquid collecting tank (43) onto the lower packing part (3).

2. The novel distillation column as described in claim 1, characterized in that: The liquid collecting cylinder (41) is cylindrical and has an internal channel for upward airflow; The liquid collecting ring (42) is circular and is arranged at the bottom of the outside of the liquid collecting cylinder (41). The outside of the liquid collecting ring (42) is attached to the inner wall of the tower body (1) and is used to collect the liquid dripping from the inner wall of the tower body (1).

3. The novel distillation column as described in claim 1, characterized in that: The liquid distribution plate (45) includes an inlet pipe (451) and a distribution pipe (452) that are connected to each other. The two ends of the inlet pipe (451) are respectively connected to the liquid collection tank (43). The outer side of the other end of the distribution pipe (452) is provided with a plurality of ring pipes (453) arranged in a ring-like layer, and the distribution pipe (452) and the plurality of ring pipes (453) are connected by a plurality of adapter pipes (454). The bottom of both the annular pipe (453) and the distribution pipe (452) is provided with several spray holes (6). A gap is left between two adjacent annular tubes (453) for gas flow.

4. A novel distillation column as described in claim 3, characterized in that: The nozzles (6) at the bottom of the annular tube (453) are arranged at a relatively inclined position; The nozzles (6) at the bottom of the distribution pipe (452) are evenly distributed.

5. A novel distillation column as described in claim 1, characterized in that: The inclined plate collector (44) includes a plurality of guide plates (441) radially distributed along the liquid collection cylinder (41). The guide plates (441) are used to collect the liquid dripping from the top. The guide plates (441) are Z-shaped and arranged at an inclination. Both ends of the guide plates (441) extend into the liquid collection tank (43) to allow the collected liquid to flow into the liquid collection tank (43). A gas flow channel is formed between two adjacent guide plates (441).

6. A novel distillation column as described in claim 1, characterized in that: The initial distributor (2) includes a second liquid inlet pipe (21) disposed on the tower body (1), the other end of which extends into the tower body (1); The outer side of the other end of the liquid inlet pipe (21) has multiple ring pipes (22) arranged in a ring-like layer, and the multiple ring pipes (22) are connected by several adapter pipes (23); The bottom of the annular tube (22) is provided with several annularly distributed nozzles (24). A gap is left between two adjacent annular tubes (22).

7. A novel distillation column as described in claim 1, characterized in that: The packing section (3) includes a packing pressure plate (31), a packing (32) and a packing support plate (33) arranged from top to bottom. The packing pressure plate (31) is used to press the packing (32) and the packing support plate (33) is used to support the packing (32).

8. A novel distillation column as described in claim 1, characterized in that: The tower body (1) is equipped with a demister (5) located above the initial distributor (2).

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