Baijiu rectification equipment

Abstract

According to the scheme, the spirit rectification equipment comprises a tower body, a tower cavity used for containing materials is formed in the tower body, a feeding port used for feeding the materials and a vapor phase material inlet used for feeding vapor phase materials are formed in the tower body, and a first material return port used for feeding backflow materials is formed in the top of the tower body; the vapor-phase material inlet is positioned below the first material return opening; the overflow assembly is located in the tower cavity and located between the first material return port and the vapor phase material inlet, the overflow assembly comprises a plurality of tower plates, and the plurality of tower plates are transversely arranged in the tower cavity at intervals up and down; a plurality of sieve pores are formed in the tower plate and are used for enabling vapor-phase materials to rise; the feeding hole can be positioned between any two adjacent tower plates; at least one downcomer is formed in each tower plate, and the downcomer penetrates through the tower plate up and down; wherein one part of the tower plates is provided with a downcomer, and the other part of the tower plates is provided with a plurality of downcomers; and the downcomers on the upper and lower adjacent tower plates are horizontally staggered.

Description

Technical Field

[0001] This application relates to the field of distillation equipment for strong alcohols, and particularly to a distillation equipment for strong alcohols. Background Technology

[0002] Vodka, rum, and other spirits are distilled spirits made from grains such as barley or molasses, aged for many years in oak barrels, and then blended to reduce their alcohol content. The British call them "water of life."

[0003] The alcohol content requirement for vodka is quite high. The separation of ethanol-water mixtures and other media mixtures involves azeotropic distillation, which requires the use of continuous distillation columns. However, the current domestic technology is limited to single overflow distillation column production technology, which has low liquid flow uniformity and plate efficiency. Utility Model Content

[0004] To address the aforementioned problems, this application provides a distillation apparatus for strong alcohols.

[0005] According to one aspect of the embodiments of this application, a spirit distillation apparatus is disclosed. The spirit distillation apparatus includes a tower body, the tower body having a tower cavity for holding materials, the tower body having a feed inlet for entering materials and a vapor material inlet for entering vapor materials, and the top of the tower body having a first return inlet for entering reflux materials; the vapor material inlet is located below the first return inlet.

[0006] An overflow assembly is located inside the tower cavity and between the first return port and the vapor phase material inlet. The overflow assembly includes multiple trays, which are horizontally arranged in the tower cavity at intervals. Each tray has multiple sieve holes for allowing vapor phase material to rise. The inlet can be located between any two adjacent trays.

[0007] Each of the trays has at least one downcomer, which extends vertically through the tray; some of the trays have one downcomer, and some of the trays have multiple downcomers; the downcomers on adjacent trays are horizontally staggered.

[0008] In one exemplary embodiment, the overflow assembly includes a multiple overflow group and a single overflow group, the multiple overflow group being disposed on the single overflow group;

[0009] The multiple overflow group includes multiple trays, and some trays in the multiple overflow group have multiple downcomers;

[0010] The single overflow group includes multiple trays, and all trays in the single overflow group have one downcomer.

[0011] In an exemplary embodiment, the multi-overflow group includes a plurality of double-overflow units arranged sequentially in the column cavity. Each double-overflow unit includes two columns spaced apart vertically. The upper column is a first column, and the downcomer on the first column is a first downcomer formed in the middle of the first column. The lower column is a second column, and the downcomer on the second column is a second downcomer. The second column of the lowest double-overflow unit has a second downcomer, and the other double-overflow units have second downcomers on opposite sides of their second columns.

[0012] The single overflow group includes multiple single overflow units arranged vertically in the tower cavity. Each single overflow unit includes a tower plate, which is a third tower plate. The downcomer on the third tower plate is a third downcomer. The third downcomers on two adjacent single overflow units are staggered vertically.

[0013] The second downcomer of the bottommost double overflow unit faces downward directly onto the third tray of the topmost single overflow unit.

[0014] In one exemplary embodiment, the overflow assembly further includes a downcomer disposed along the edge of the downcomer port, the outer periphery of the downcomer being attached to the tray, or the outer periphery of the downcomer being attached to both the tray and the tower body;

[0015] The liquid-falling component arranged along the edge of the first liquid-falling port is the first liquid-falling component, and the first liquid-falling component extends downward to form a first liquid-falling channel that runs vertically through the top and bottom.

[0016] The liquid-falling element provided along the edge of the second liquid-falling port is the second liquid-falling element. The second liquid-falling element extends downward and forms a second liquid-falling channel that is vertically connected with the inner wall of the tower body.

[0017] The descending element provided along the edge of the third descending port is the third descending element, which extends downward and forms a vertically penetrating third descending channel with the inner wall of the tower body.

[0018] In one exemplary embodiment, the top of the downcomer extends upward beyond the top of the corresponding tray to form an overflow weir.

[0019] In one exemplary embodiment, the feed inlet is connected to the third liquid-falling channel;

[0020] The feed inlet is connected to the third downflow channel of the uppermost single overflow unit.

[0021] In one exemplary embodiment, each of the trays has at least one upward-facing liquid receiving tank, and between two adjacent trays, the liquid receiving tank of the lower tray faces upward directly opposite the downcomer of the upper tray; and / or

[0022] The feed inlet is provided with multiple inlets, and one feed inlet may be provided between any two adjacent trays; and / or

[0023] The sieve includes multiple guide valves and multiple through holes. The multiple through holes are spaced apart in the middle of the tray, and the multiple guide valves are spaced apart around the periphery of the tray and surround the outer periphery of the multiple through holes. The guide valves are configured to guide the liquid material on the tray to the corresponding downcomer.

[0024] In one exemplary embodiment, a reboiler is provided, the inlet of which is connected to the bottom of the column cavity, and the outlet of which is connected to the vapor phase feed inlet. The reboiler is configured to heat the liquid phase material at the bottom of the column cavity into a vapor phase material and feed it into the column cavity.

[0025] In one exemplary embodiment, the outlet of the reboiler is also connected to the first return port, and the reboiler is configured to input the waste liquid remaining after heating the liquid phase material at the bottom of the tower cavity to the top of the tower cavity.

[0026] In one exemplary embodiment, the tower body is provided with a second return port, which is located above the overflow assembly;

[0027] The distillation equipment for strong alcohols also includes a condenser, the feed end of which is connected to the top of the column cavity, and the discharge end of which is connected to the second return port. The condenser is configured to condense the vapor phase material at the top of the column cavity into a liquid phase material and input it into the column cavity.

[0028] The condenser is also connected to a product discharge pipe at its discharge end, which is used to output the product formed after the condenser condenses and liquefies the product.

[0029] The technical solutions provided by the embodiments of this application have at least the following beneficial effects:

[0030] The spirits distillation equipment disclosed in this application features a mixed arrangement of trays with varying numbers of downcomers within the column cavity. Furthermore, the feed inlet can be positioned between any two adjacent trays, allowing for a more rational distribution of liquid volume across different areas of the column, greater operational flexibility, and improved overall separation efficiency, while also meeting reasonable construction cost planning. Additionally, each tray can be equipped with one or more downcomers to adapt to different production loads and composition variations, satisfying the requirements of distillation processes at different throughputs. This makes it suitable for a wider range of operating conditions and eliminates the need for a separate distillation unit for auxiliary processing.

[0031] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0033] Figure 1 This is a schematic diagram of the structure of a distillation apparatus for strong alcohol provided in an embodiment of this application.

[0034] Figure 2 This is a partial structural schematic diagram of a multi-overflow group provided in an embodiment of this application.

[0035] Figure 3 This is a schematic diagram of the structure of the double overflow unit located at the bottom and the single overflow unit located at the top, provided in an embodiment of this application.

[0036] Figure 4 for Figure 1 A schematic diagram of the cross-section along the AA direction.

[0037] The reference numerals in the attached drawings are explained as follows: 1-Tower body; 11-Tower cavity; 12-Inlet; 121-Tower feed pipe; 13-Vapor phase feed inlet; 14-First return feed inlet; 15-Second return feed inlet; 2-Reboiler; 21-Bottom discharge pipe; 22-Vapor phase feed pipe; 23-First discharge pipe; 24-First return feed pipe; 3-Condenser; 31-Vapor phase discharge pipe; 32-Second return feed pipe; 33-Product discharge pipe; 4-Overflow assembly; 41-Tower tray; 411-Downflow port; 412-Receiving tank; 413-Downflow component; 4131-Overflow Weir section; 42-Multiple overflow group; 421-Double overflow unit; 4211-First tray; 42111-First downcomer; 4212-Second tray; 42121-Second downcomer; 43-First downcomer; 431-First downcomer channel; 44-Second downcomer; 441-Second downcomer channel; 45-Single overflow group; 451-Single overflow unit; 4511-Third tray; 45111-Third downcomer; 46-Third downcomer; 461-Third downcomer channel; 5-Sieve hole; 51-Guide valve; 52-Through hole. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this application will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0039] In the description of this utility model, all the connection relationships mentioned do not refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0040] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0043] This application provides a spirits distillation apparatus for refining spirits. The spirits distillation apparatus includes a column body 1 and an overflow assembly 4. The column body 1 has a column cavity 11 for holding materials. The column body 1 has, from top to bottom, a first return port 14 for receiving reflux material, a feed port 12 for receiving material, and a vapor inlet 13 for receiving vapor material. The feed port 12 can receive liquid material or vapor-liquid material; the first return port 14 receives liquid material. The overflow assembly 4 is located between the first return port 14 and the vapor inlet 13. The overflow assembly 4 includes multiple trays 41 with multiple sieve holes 5. Vapor material can pass through the corresponding sieve holes 5 from bottom to top of the column body 1 through the multiple trays 41. Some trays 41 have multiple downcomers 411, while others have only one downcomer 411. Under gravity, the liquid material flows sequentially from top to bottom through the corresponding downcomers 411 on the trays 41. The liquid material flowing on the trays 41 interacts with the vapor material passing through the sieve holes 5, resulting in heat and mass transfer, thus achieving material separation and purification. Trays 41 with multiple downcomers 411 allow for better control of the liquid material's flow path and residence time, improving tray efficiency. They are suitable for scenarios with large liquid volumes and large column diameters, preventing flooding and improving mass transfer efficiency. Furthermore, trays 41 with only one downcomer 411 have a simpler structure and are suitable for applications with lower flow rates or less stringent flow distribution requirements.

[0044] This application arranges trays 41 with different numbers of downcomers 411 in a mixed layout within the column cavity 11, and the feed inlet 12 can be located between any two adjacent trays 41. This allows for a more rational distribution of liquid volume in different areas of the column, greater operational flexibility, and improved overall column separation efficiency, while also meeting reasonable construction cost planning. Furthermore, the trays 41 can be equipped with one or more downcomers 411 to adapt to different production loads and composition changes, meeting the requirements of distillation production processes under different throughputs, applicable to more operating conditions, and eliminating the need for a separate distillation unit for auxiliary processing.

[0045] Figure 1 A structural diagram of a distillation apparatus for strong alcohols is shown.

[0046] like Figure 1 As shown, the distillation equipment for strong alcohol includes a column body 1, a reboiler 2, a condenser 3, and an overflow assembly 4.

[0047] The tower body 1 has a tower cavity 11 for holding materials. The side wall of the tower body 1 has a feed inlet 12, which is connected to the tower feed pipe 121 to facilitate the introduction of materials. The top of the tower body 1 has a first return port 14 and a second return port 15, and the bottom of the side wall of the tower body 1 has a vapor phase material inlet 13. The first return port 14, the feed port 12, and the vapor phase feed inlet 13 are arranged alternately from top to bottom. The overflow component 4 is located between the first return port 14 and the vapor phase feed inlet 13. The feed port 12 is arranged corresponding to the overflow component 4, so that the liquid phase material entering through the first return port 14 can pass through the overflow component 4 from top to bottom, while the vapor phase material entering through the vapor phase feed inlet 13 can pass through the overflow component 4 from bottom to top. The material entering through the feed port 12 can pass through the overflow component 4 first, so that the liquid phase material entering through the feed port 12 can be evenly distributed on the tower plate 41, improving the material flow stability, increasing the contact between the vapor and liquid phase materials, improving the mass and heat transfer effect of the contact between the liquid and vapor phase materials, and improving the separation efficiency. Specifically, the liquid phase material entering through the feed port 12 will pass through the overflow component 4 from top to bottom and collect at the bottom of the tower cavity 11, while the vapor phase material entering through the feed port 12 will pass through the overflow component 4 from bottom to top and collect at the top of the tower cavity 11.

[0048] The reboiler 2 is used to heat liquid materials to generate steam. The inlet of the reboiler 2 is connected to the bottom of the column cavity 11 via a bottom discharge pipe 21, and the outlet of the reboiler 2 is connected to the vapor inlet 13 via a vapor feed pipe 22. The reboiler 2 is configured to draw in the deposited liquid material at the bottom of the column cavity 11, heat it into vapor material, and then return it to the column cavity 11 through the vapor inlet 13. The outlet of the reboiler 2 is also connected to a first return port 14, allowing the waste liquid remaining after heating the liquid material at the bottom of the column cavity 11 by the reboiler 2 to be returned to the top of the column cavity 11 through the first return port 14. Furthermore, the reboiler 2 can also discharge the waste liquid outside the column body 1.

[0049] Specifically, reboiler 2 has a heat medium channel, through which heat medium exchanges heat with the liquid material inside reboiler 2, thereby heating the liquid material. Operators can adjust the flow rate of the heat medium according to product precision and equipment operating load, and thus adjust the flow rate of the vapor material entering tower cavity 11.

[0050] The condenser 3 is used to condense vaporous materials into liquid materials. The feed end of the condenser 3 is connected to the top of the tower cavity 11 via a vapor discharge pipe 31, and the discharge end of the condenser 3 is connected to a second return port 15 via a second return pipe 32. The condenser 3 is configured to condense the vaporous material rising to the top of the tower cavity 11 into liquid material, which is then fed into the tower cavity 11 through the second return port 15. Furthermore, the discharge end of the condenser 3 is also connected to a product discharge pipe 33, which is used to output the product formed after condensation and liquefaction by the condenser 3. The condenser 3 can control the proportion of condensed material refluxed into the tower cavity 11 and the output product, adjusting the reflux ratio of the equipment and improving product accuracy. Specifically, the condenser 3 has a refrigerant channel, through which the introduced refrigerant exchanges heat with the hot vaporous material, achieving cooling of the vaporous material. Operators can adjust the flow rate of the refrigerant according to the product accuracy and the operating load of the equipment, thereby adjusting the flow rate of the condensed vaporous material refluxed into the tower cavity 11. In addition, the first return port 14 and the second return port 15 can be the same interface on the tower body 1, or they can be two separate interfaces.

[0051] The operating load of the distillation equipment for strong alcohols in this embodiment is between 30% and 150%, which can meet the requirements of distillation production processes under different liquid volumes and has a wide range of applicable operating conditions.

[0052] Furthermore, in this embodiment, the overflow assembly 4 is located within the tower cavity 11, and is positioned between the first return port 14 and the vapor phase feed inlet 13. The overflow assembly 4 includes multiple vertically spaced trays 41, which are laterally arranged within the tower cavity 11. A space is formed between the inner peripheral wall of the tower body 1 and any two adjacent trays 41. A downcomer 411 is formed on one portion of the trays 41, while multiple downcomers 411 are formed on another portion of the trays 41. The downcomers 411 penetrate the trays 41 vertically, and two adjacent spaces are connected through the downcomers 411.

[0053] A tray 41 with multiple downcomers 411 can handle a larger volume of material, improving tray efficiency. A tray 41 with a single downcomer 411 is suitable for locations with smaller material volumes, preventing the tray from drying out. By combining trays 41 with different numbers of downcomers 411, the flow distribution in different areas of the column 1 is made more rational, improving the separation efficiency of the entire spirits distillation unit. Furthermore, the tray 41 is provided with multiple sieve holes 5 so that the vapor phase material can pass through the sieve holes 5 on the corresponding tray 41 into the space above.

[0054] The phrase "multiple downcomers 411" refers to the fact that a tray 41 may have two or more downcomers 411. "Partial tray" refers to a tray with one or more sections.

[0055] Furthermore, the downcomers 411 on adjacent trays 41 are horizontally staggered so that the liquid material can pass through the corresponding tray 41 first and then flow away from the downcomer 411 on that tray 41, preventing the liquid material from falling directly and avoiding the tray 41 from becoming dry. In practice, the downcomer 411 can be located in the middle of the tray 41 or on the side of the tray 41 near the inner wall of the column body 1.

[0056] Furthermore, the overflow assembly 4 also includes a downcomer 413, which is disposed along the edge of the downcomer port 411. The outer periphery of the downcomer 413 is attached to the tower plate 41, or the outer periphery of the downcomer 413 is attached to both the tower plate 41 and the tower body 1. Specifically, the downcomer 413 is disposed attached to the edge of the downcomer port 411, so that the downcomer 413 itself, or the downcomer 413 and the inner wall of the tower body 1, form a downcomer channel, which plays a role in guiding and buffering the liquid phase material, and is used to guide the liquid phase material located on the tower plate 41 to the space below, reducing the impact.

[0057] Furthermore, the top of the downcomer 413 extends upward beyond the top of the corresponding tray 41 to form an overflow weir 4131. Specifically, a liquid storage space can be constructed between the upwardly protruding overflow weir 4131 and the corresponding tray 41, which can hold a portion of the liquid. When the liquid flows into the liquid storage space, it can buffer the oscillations and eddies generated by the falling buffer phase material. The liquid storage space ensures that the liquid contained within has a certain depth, allowing for sufficient contact with the vapor to facilitate mass and heat transfer processes and reduce tray dry-out and flow interruption phenomena.

[0058] In this embodiment, each tray 41 has at least one upward-facing liquid receiving tank 412. Between two adjacent trays 41, the liquid receiving tank 412 of the lower tray 41 faces upward directly opposite the downcomer 411 of the upper tray 41. When the liquid material flows to the lower tray 41 through the downcomer channel, it first flows into the liquid receiving tank 412. When the material impacts the liquid receiving tank 412 from top to bottom, the liquid receiving tank 412 can reduce the kinetic energy of the liquid material, mitigate the impact force of the liquid material, and reduce the eddy effect after the liquid material enters the tray 41, so that the liquid material flows smoothly along the tray 41. The liquid material overflowing from the liquid receiving tank 412 flows into the liquid storage space to further buffer the impact of the liquid material.

[0059] In some embodiments, the feed inlet 12 can be located between any two adjacent trays 41. The position of the feed inlet 12 can be designed according to factors such as process, equipment throughput, and product characteristics. In practice, there can be only one feed inlet 12, determined by the composition of the feed material and product characteristics. In other embodiments, there can be multiple feed inlets 12, i.e., two or more feed inlets 12. One feed inlet 12 can be located between any two adjacent trays 41, and multiple feed inlets 12 can be located between corresponding sets of any two adjacent trays 41. This application determines the location of the feed inlet 12 based on different product characteristics, while the remaining feed inlets 12 that are not selected remain closed, enabling the preparation of different products and improving the versatility of the spirits distillation equipment.

[0060] like Figure 1 As shown, the overflow assembly 4 includes a multi-overflow group 42 and a single-overflow group 45. The multi-overflow group 42 includes multiple trays 41, and some trays 41 in the multi-overflow group 42 have multiple downcomers 411. The single-overflow group 45 includes multiple trays 41, and all trays 41 in the single-overflow group 45 have one downcomer 411. In this embodiment, the multi-overflow group 42 is disposed above the single-overflow group 45.

[0061] Specifically, when the amount of defective products discharged increases, the flow rate of liquid material returning to the top of the column cavity 11 will increase accordingly. Setting the multiple overflow group 42 above the single overflow group 45 can solve the problem of large material return flow in the upper part of the column body 1, and further meet the requirements of distillation operations with different liquid flow rates in different areas.

[0062] In other embodiments, a single overflow group 45 may be positioned above multiple overflow groups 42 to address situations with large material feed rates. Alternatively, trays 41 with multiple downcomers 411 and trays 41 with a single downcomer 411 may be randomly distributed, and the specific layout of trays 41 with different downcomers 411 can be designed based on factors such as process, equipment throughput, and product characteristics.

[0063] Figure 2 This is a partial structural diagram of the multi-overflow group 42. Figure 3 This is a schematic diagram of a double overflow unit 421 and a single overflow unit 451. Figure 4 This is a schematic diagram of the structure of tray 41, specifically... Figure 1 A view along the AA direction.

[0064] Reference Figure 2The multi-overflow unit 42 includes multiple double-overflow units 421 arranged sequentially within the column cavity 11. Each double-overflow unit 421 includes two trays 41 spaced apart vertically. The upper tray 41 is the first tray 4211, and the downcomer 411 on the first tray 4211 is the first downcomer 42111, which is formed in the middle of the first tray 4211. The lower tray 41 is the second tray 4212, and the downcomer 411 on the second tray 4212 is the second downcomer 42121. Taking two mutually perpendicular directions in the horizontal direction as the longitudinal and transverse directions, the second tray 4212 of the double-overflow unit 421 shown in the figure has two opposite transverse sides with second downcomers 42121.

[0065] In the same double overflow unit 421, the liquid material flowing on the first tray 4211 continuously accumulates and eventually flows downward through the first downcomer 42111 in the middle to the second tray 4212. The liquid material on the second tray 4212 continuously accumulates and spreads from it to the second downcomer 42121 on both sides laterally. Finally, it flows through the second downcomer 42121 on both sides to the first tray 4211 of the other double overflow unit 421 below. This optimizes the material flow path in the tower, reduces dead zones and short-circuit flows, and improves mass and heat transfer efficiency.

[0066] Furthermore, the first downcomer 413 is provided along the edge of the first downcomer 42111. The first downcomer 43 extends downward to form a first downcomer channel 431 that runs vertically through the tower. The second downcomer 44 is provided along the edge of the second downcomer 42121. The second downcomer 44 extends downward and forms a second downcomer channel 441 that runs vertically through the tower body 1 with the second downcomer 44. The first downcomer channel 431 and the second downcomer channel 441 can guide the flow of liquid phase materials.

[0067] Specifically, refer to Figure 4The first downcomer 42111 is located in the middle of the first tray 4211, and the opposite sides of the first downcomer 42111 extend longitudinally to the inner wall of the tower body 1. Two first downcomer components 43 are respectively attached to the lateral extension edges of the first downcomer 42111, and the longitudinal sides of the first downcomer components 43 are connected to the inner wall of the tower body 1, so that the first downcomer components 43 and the inner wall of the tower body 1 form a first downcomer channel 431 to guide the flow of liquid material. The second downcomer 42121 extends longitudinally, and the two second downcomer ports 42121 are located on the opposite lateral sides of the second tray 4212, and the two second downcomer ports 42121 are staggered from the first downcomer channel 431, and are respectively located on the lateral sides of the first downcomer channel 431. The second downcomer component 44 is attached to the second downcomer port 42121, so that the second downcomer component 44 and the inner wall of the tower body 1 form a second downcomer channel 441 to guide the flow of liquid material. In practice, the first downcomer 43 and the second downcomer 44 can be plate structures, or tubular or cylindrical structures. In this embodiment, the first tray 4211 has liquid receiving grooves 412 on both sides of its lateral direction, which correspond to the second downcomer port 42121 on the upper second tray 4212. The second tray 4212 has a liquid receiving groove 412 in the middle, which corresponds to the first downcomer port 42111 on the upper first tray 4211.

[0068] Furthermore, the single overflow unit 451 includes multiple single overflow units 451 arranged vertically within the tower cavity 11. Each single overflow unit 451 includes a tray 41, which is the third tray 4511. The downcomer 411 on the third tray 4511 is the third downcomer 45111. The third downcomers 45111 on adjacent single overflow units 451 are staggered vertically. Specifically, the third downcomer 45111 extends longitudinally and is located on the edge of the tray 41 near the inner wall of the tower body 1. The third downcomers 45111 of two adjacent trays 4511 are staggered in the transverse direction. When the liquid material flows from the third downcomer 45111 of the previous tray 4511 to the transverse side of the lower tray 4511, the liquid material needs to cross the third tray 4511 and reach the other transverse side of the third tray 4511 before finally flowing out from the third downcomer 45111 of the third tray 4511. This increases the contact time between the vapor and liquid phases, thereby improving separation efficiency and tray efficiency.

[0069] Furthermore, the descending element 413 arranged along the edge of the third descending port 45111 is the third descending element 46. The third descending element 46 extends downward and forms a vertically connected third descending channel 461 with the inner wall of the tower body 1. The third descending channel 461 can guide the flow of liquid phase materials and reduce liquid splashing and impact.

[0070] Furthermore, a liquid receiving tank 412 is provided on any side of the third tray 4511 in the lateral direction. The liquid receiving tank 412 of the lower third tray 4511 is directly opposite the third downcomer channel 461 of the upper third tray 4511, or directly opposite the second downcomer channel 441 of the lowest second tray 4212.

[0071] In this embodiment, the second downcomer 42121 of the bottommost double overflow unit 421 faces downwards directly towards the third tray 4511 of the topmost single overflow unit 451. The second tray 4212 of the bottommost double overflow unit 421 has one second downcomer 42121, while the other double overflow units 421 have second downcomers 42121 on opposite sides of their respective second trays 4212. Specifically, the bottommost double overflow unit 421 has only one second downcomer 42121 on its second tray 4212, used to connect with the lower single overflow unit 451. This ensures that the second downcomer 42121 does not face downwards directly towards the third downcomer 45111 of the third tray 4511. By staggering the second downcomer 42121 and the third downcomer 45111, the liquid phase material can be more evenly distributed on the tray 41, ensuring sufficient contact time between the vapor and liquid phase materials.

[0072] In some other embodiments, if the double overflow group is located below the single overflow group 45, the first downcomer 42111 of the first tray 4211 of the uppermost double overflow unit 421 is offset from the third downcomer 45111 of the third tray 4511 of the lowermost single overflow unit 451.

[0073] like Figure 1 In one embodiment, the feed inlet 12 is connected to the third downcomer channel 461, and also to the third downcomer channel 461 of the uppermost single overflow unit 451. Specifically, the liquid material entering the feed inlet 12 can be guided along the third downcomer channel 461 to the lower tray 41, reducing liquid splashing. Alternatively, the feed inlet 12 can also be connected to the first downcomer channel 431 or the second downcomer channel 441. In another embodiment, if the material entering the feed inlet 12 contains vapor material, the feed inlet 12 can be connected directly below the tray 41, allowing the vapor material to pass directly through the sieve holes 5 of the upper tray 41. In another embodiment, the feed inlet 12 can be connected between the double overflow units 421, specifically located between any adjacent first tray 4211 and second tray 4212.

[0074] Reference Figure 4 The tower plate 41 is provided with multiple sieve holes 5.

[0075] The sieve 5 includes multiple guide valves 51 and multiple through holes 52, with the through holes 52 spaced apart in the middle of the tray 41. The multiple guide valves 51 are spaced apart around the periphery of the tray 41 and surround the outer periphery of the through holes 52. The guide valves 51 are configured to guide the liquid material on the tray 41 to the corresponding downcomer 411. The guide valves 51 are located at the edge of the tray 41, which can promote the flow of liquid material at the edge of the tray 41, accelerate the material flow rate, and reduce material retention and scaling.

[0076] Specifically, the pilot valve 51 is a trapezoidal float valve or a trapezoidal solid valve. When the liquid material passes through the trapezoidal pilot valve 51, it can flow along the waist-shaped side of the trapezoid, thus promoting the flow of liquid.

[0077] When the pilot valve 51 is a float valve, it can open when the gas pressure caused by the vapor phase material is large, and close when the gas pressure in the tower cavity 11 caused by the vapor phase material is small, thereby increasing the equipment load range.

[0078] When the pilot valve 51 is a fixed valve, it includes a pilot body and valve legs. The pilot body extends horizontally and is higher than the plane of the tray 41. It is trapezoidal or elliptical in shape. The tray 41 has vents relative to the pilot body. The width of the pilot body gradually decreases along the liquid flow direction. The valve legs connect the tray 41 and the pilot body and are located on the tray 41 near the liquid receiving tank 412. When subjected to the impact of liquid flow, the valve legs allow the liquid to flow along both sides of the valve legs, preventing the liquid from directly entering the vents. The periphery of the pilot body is also provided with multiple exhaust teeth to divert the steam discharged from the vents. The multiple exhaust teeth are inclined downward relative to the pilot body to enhance the degree of turbulence between the vapor and liquid phases, improve the dispersion of the steam flow, accelerate the continuous renewal process of mass transfer surfaces from dispersion, aggregation and re-dispersion, thereby improving mass and heat transfer efficiency.

[0079] Reference Figures 1 to 4In this invention, material is fed into the tower cavity 11 through the feed inlet 12. The liquid material passes through multiple trays 41 of the single overflow group 45 and accumulates at the bottom of the tower cavity 11. The reboiler 2 heats the liquid material at the bottom of the tower cavity 11 to form a vapor material, which is then introduced into the vapor material inlet 13 at the bottom of the tower cavity 11. The vapor material heated by the reboiler 2 passes through the sieve holes 5 of the multiple trays 41 of the single overflow group 45 and the multi-overflow group 42 from bottom to top, and the vapor material entering from the feed inlet 12 rises through the overflow assembly 4. After passing through the overflow assembly 4, the vapor material rises to the top of the tower cavity 11. The waste liquid remaining after heating by the reboiler 2 can be returned to the top of the tower cavity 11. The condenser 3 condenses the vapor material at the top into a liquid phase and returns it to the top of the tower cavity 11. The waste liquid heated by reboiler 2 and the liquid material refluxed by condenser 3 flow downwards through multiple trays 41 of the multi-overflow group 42 and the single-overflow group 45, eventually accumulating at the bottom of column cavity 11. The downward-flowing liquid material can achieve mass and heat transfer with the upward-flowing vapor phase, realizing material separation and purification. During the downward flow of the liquid material, it is guided by the downcomer channel and buffered by the receiving tank 412 and the storage space, allowing the liquid material to flow smoothly laterally on the trays 41. After passing through the third downcomer channel 461 at the bottom, the liquid impacts the liquid seal plate, thereby reducing the kinetic energy of the liquid, and then flows back to the bottom of column cavity 11. The liquid at the bottom of column cavity 11 is heated and vaporized again by reboiler 2, realizing multiple condensation cycles.

[0080] This application mixes trays 41 with a single downcomer 411 and trays 41 with multiple downcomers 411 within the column cavity 11. The feed inlet 12 can be positioned between any two adjacent trays 41, allowing for more rational liquid distribution in different areas of the column, greater operational flexibility, and improved overall column separation efficiency, while also meeting reasonable construction cost planning. Furthermore, the trays 41 can be equipped with one or more downcomers 411 to adapt to different production loads and component variations, meeting the requirements of distillation processes at different throughputs. In addition, all internal components of the column body 1 are made of copper. The trays 41 and downcomers 413 of the overflow assembly 4 are also made of copper, with the aim of displacing methyl sulfides in the liquor and reducing its pungent taste.

[0081] The terms "horizontal" and "vertical" in this document are merely linguistic descriptions and may vary in direction; the angle between them is not necessarily a 90° perpendicular relationship. Those skilled in the art, upon considering the specification and practicing the utility model disclosed herein, will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A distillation apparatus for strong alcohols, characterized in that, include: The tower body has a tower cavity for holding materials, and the tower body has a feed inlet for entering materials and a vapor material inlet for entering vapor materials. The top of the tower body has a first return inlet for entering reflux materials. The vapor phase material inlet is located below the first return material inlet; An overflow assembly is located inside the tower cavity and between the first return port and the vapor phase material inlet. The overflow assembly includes multiple trays, which are horizontally arranged in the tower cavity at intervals. Each tray has multiple sieve holes for allowing vapor phase material to rise. The inlet can be located between any two adjacent trays. Each of the trays has at least one downcomer, which extends vertically through the tray; some of the trays have one downcomer, and some of the trays have multiple downcomers; the downcomers on adjacent trays are horizontally staggered.

2. The distillation equipment for strong alcohols according to claim 1, characterized in that, The overflow component includes multiple overflow groups and a single overflow group, with the multiple overflow groups disposed on the single overflow group; The multiple overflow group includes multiple trays, and some trays in the multiple overflow group have multiple downcomers; The single overflow group includes multiple trays, and all trays in the single overflow group have one downcomer.

3. The distillation equipment for strong alcohols according to claim 2, characterized in that, The multi-overflow group includes multiple double-overflow units arranged sequentially in the column cavity. Each double-overflow unit includes two trays spaced apart vertically. The upper tray is the first tray, and the downcomer on the first tray is the first downcomer, which is formed in the middle of the first tray. The lower tray is the second tray, and the downcomer on the second tray is the second downcomer. The second tray of the lowest double-overflow unit has one second downcomer, and the second trays of the remaining double-overflow units have second downcomers on opposite sides. The single overflow group includes multiple single overflow units arranged vertically in the tower cavity. Each single overflow unit includes a tower plate, which is a third tower plate. The downcomer on the third tower plate is a third downcomer. The third downcomers on two adjacent single overflow units are staggered vertically. The second downcomer of the bottommost double overflow unit faces downward directly onto the third tray of the topmost single overflow unit.

4. The distillation equipment for strong alcohols according to claim 3, characterized in that, The overflow assembly also includes a downcomer, which is disposed along the edge of the downcomer port and the outer periphery of the downcomer is attached to the tray, or the outer periphery of the downcomer is attached to both the tray and the tower body; The liquid-falling component arranged along the edge of the first liquid-falling port is the first liquid-falling component, and the first liquid-falling component extends downward to form a first liquid-falling channel that runs vertically through the top and bottom. The liquid-falling element provided along the edge of the second liquid-falling port is the second liquid-falling element. The second liquid-falling element extends downward and forms a second liquid-falling channel that is vertically connected with the inner wall of the tower body. The descending element provided along the edge of the third descending port is the third descending element, which extends downward and forms a vertically penetrating third descending channel with the inner wall of the tower body.

5. The distillation equipment for strong alcohols according to claim 4, characterized in that, The top of the liquid descending element extends upward beyond the top of the corresponding tray to form an overflow weir.

6. The distillation equipment for strong alcohols according to claim 4, characterized in that, The feed inlet is connected to the third liquid-falling channel; The feed inlet is connected to the third downflow channel of the uppermost single overflow unit.

7. The distillation equipment for strong alcohols according to claim 1, characterized in that, Each of the trays has at least one upward-facing liquid receiving tank, and between two adjacent trays, the liquid receiving tank of the lower tray faces upward directly opposite the downcomer of the upper tray; and / or The feed inlet is provided with multiple inlets, and one feed inlet may be provided between any two adjacent trays; and / or The sieve includes multiple guide valves and multiple through holes. The multiple through holes are spaced apart in the middle of the tray, and the multiple guide valves are spaced apart around the periphery of the tray and surround the outer periphery of the multiple through holes. The guide valves are configured to guide the liquid material on the tray to the corresponding downcomer.

8. The distillation equipment for strong alcohols according to claim 1, characterized in that, Also includes: A reboiler, the inlet of which is connected to the bottom of the column cavity, and the outlet of which is connected to the vapor phase feed inlet, the reboiler being configured to heat the liquid phase material at the bottom of the column cavity into vapor phase material and feed it into the column cavity.

9. The distillation equipment for strong alcohols according to claim 7, characterized in that, The outlet of the reboiler is also connected to the first return port, and the reboiler is configured to input the waste liquid remaining after heating the liquid phase material at the bottom of the tower cavity to the top of the tower cavity.

10. The distillation apparatus for strong alcohols according to claim 1, characterized in that, The tower body is provided with a second return port, which is located above the overflow component; The distillation equipment for strong alcohols also includes a condenser, the feed end of which is connected to the top of the column cavity, and the discharge end of which is connected to the second return port. The condenser is configured to condense the vapor phase material at the top of the column cavity into a liquid phase material and input it into the column cavity. The condenser is also connected to a product discharge pipe at its discharge end, which is used to output the product formed after the condenser condenses and liquefies the product.

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