A naphtha fractionating column

Abstract

The application discloses a naphtha fractionating column and belongs to the technical field of petroleum chemical equipment. The naphtha fractionating column is provided with an adjusting mechanism in the mounting seat, the flow area of the object channel can be dynamically adjusted according to actual working conditions, the gas rising speed can be flexibly controlled, the liquid flooding phenomenon can be effectively avoided, different processing capacities and changes in raw material properties can be adapted, the response speed is fast, shutdown adjustment is not needed, and the operation flexibility and stability of the fractionating column are obviously improved. Adjacent first adjusting plates and second adjusting plates are arranged in a staggered mode in the circumferential direction, a mechanical seal is formed at one end away from the axis of the inner tooth ring in the vertical direction during the process of being closed or gradually opened, gas dissipation is effectively reduced, the fractionating efficiency is improved, and the anti-erosion effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of petrochemical equipment technology, and in particular to a naphtha fractionation tower. Background Technology

[0002] Naphtha fractionation towers are core equipment in petroleum refining and chemical production. They are mainly used to separate mixed hydrocarbons (such as naphtha) obtained from crude oil distillation or secondary processing according to their boiling point ranges to obtain light hydrocarbon components (such as gasoline, solvent oil, and chemical raw materials) of different purities. Their working principle is based on distillation: the mixture undergoes multiple partial vaporizations and condensations within the tower, utilizing the differences in boiling points of the components to achieve separation. The tower typically contains multiple layers of trays or packing to provide a contact interface between the gas and liquid phases, promoting heat and mass transfer. The performance of the fractionation tower directly affects product quality, energy consumption, and operational stability; therefore, its structural design and operational control are crucial.

[0003] However, existing fractionation towers still have the following shortcomings in practical applications: Most existing fractionation towers control gas flow through fixed-size trays or packing layers, making it impossible to dynamically adjust the gas-liquid ratio according to actual operating conditions. When the throughput or raw material properties change, the gas-liquid ratio needs to be indirectly adjusted by changing the operating pressure or temperature, resulting in a slow response time. Furthermore, traditional adjustment methods require shutdown for maintenance, which not only affects production continuity but also increases maintenance costs and time.

[0004] Therefore, there is an urgent need for a naphtha fractionation tower to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a naphtha fractionation tower that can dynamically adjust the gas flow area according to operating conditions without requiring shutdown for maintenance.

[0006] To achieve this objective, the present invention adopts the following technical solution: A naphtha fractionation tower includes a tower body, a mounting base, and a tray. The mounting base is a hollow structure with a storage channel extending through its axial sidewall. An adjustment mechanism is provided within the mounting base, the adjustment mechanism comprising: An internal gear ring, which is horizontally rotatably disposed within the mounting base, has a first meshing tooth on its inner wall; and, The first adjusting plate and the second adjusting plate are provided. At least two first adjusting plates are provided on the upper inner side of the internal toothed ring. All the first adjusting plates are arranged radially in a ring about the axial direction of the internal toothed ring. At least two second adjusting plates are provided on the lower inner side of the internal toothed ring. All the second adjusting plates are arranged radially in a ring about the axial direction of the internal toothed ring. The number of first adjusting plates is the same as the number of second adjusting plates. A second meshing tooth is provided on the end of the first adjusting plate away from the axis of the internal toothed ring and the end of the second adjusting plate away from the axis of the internal toothed ring. The second meshing tooth meshes with the first meshing tooth. The first adjusting plates and the second adjusting plates that are adjacent to each other are staggered along the circumference of the internal toothed ring. The ends of all the first adjusting plates near the axis of the internal toothed ring and the ends of all the second adjusting plates near the axis of the internal toothed ring can move closer or further apart under meshing action to achieve continuous adjustment of the flow area of ​​the storage channel.

[0007] As an optional technical solution for the aforementioned naphtha fractionation tower, the regulating mechanism further includes: The drive assembly includes a motor and a gear. The output end of the motor is connected to the gear. The outer wall of the internal gear ring is provided with a third meshing tooth. The outer wall of the mounting base is provided with a rotation channel corresponding to the position of the third meshing tooth. The third meshing tooth protrudes from the rotation channel and meshes with the gear.

[0008] As an optional technical solution for the above-mentioned naphtha fractionation tower, the first adjusting plate and the second adjusting plate have the same structure. The end of the first adjusting plate away from the axis of the internal toothed ring and the end of the second adjusting plate away from the axis of the internal toothed ring are respectively provided with rotating shafts in the vertical direction. The rotating shafts are fixedly connected to the inner wall of the mounting base.

[0009] As an optional technical solution for the above-mentioned naphtha fractionation tower, the horizontal cross-section of the first adjusting plate and the horizontal cross-section of the second adjusting plate are both crescent-shaped, and the material placement channel can be completely closed when all the ends of the first adjusting plate abut against all the ends of the second adjusting plate respectively.

[0010] As an optional technical solution for the above-mentioned naphtha fractionation tower, the fractionation tower body includes multiple coaxially mounted fractionation tower sections, with the same mounting base connecting two adjacent fractionation tower sections. The tower tray is detachably connected to each fractionation tower section, and the tower tray is located above the regulating mechanism.

[0011] As an optional technical solution for the above-mentioned naphtha fractionation tower, the tower tray is slidably disposed vertically at the top opening of the storage channel within the mounting base.

[0012] As an optional technical solution for the above-mentioned naphtha fractionation tower, at least two threaded blocks are provided on the outer wall of the tower tray. All the threaded blocks are evenly distributed at equal intervals along the circumference of the tower tray. Each threaded block is provided with a threaded hole, and a screw is threaded into the threaded hole. The screw is arranged in a vertical direction. A groove is opened on the inner wall of the placement channel on the mounting base corresponding to the position of the threaded block. The threaded block is located in the groove, and the lower end of the screw is rotatably mounted on the bottom wall of the groove.

[0013] As an optional technical solution for the above-mentioned naphtha fractionation tower, an adjustment channel is provided on the side wall of the mounting base at the position corresponding to the screw. The adjustment channel is arranged to penetrate the side wall of the mounting base radially, and one end of the adjustment channel on the outer wall of the mounting base is an adjustment opening.

[0014] As an optional technical solution for the above-mentioned naphtha fractionation tower, the regulating opening is detachably connected with a sealing cap.

[0015] As an optional technical solution for the aforementioned naphtha fractionation tower, a flange is installed on the outer wall of the mounting base for connection with the fractionation tower's separate flange.

[0016] Compared with the prior art, the present invention has at least the following technical effects: The naphtha fractionation tower provided by this invention includes a tower body, a mounting base, and a tray. The mounting base is a hollow structure with a storage channel extending through its axial sidewall. An adjustment mechanism is provided within the mounting base, comprising an internal gear ring, a first adjustment plate, and a second adjustment plate. The internal gear ring is horizontally rotatable within the mounting base, and its inner wall has first meshing teeth. At least two first adjustment plates are provided on the upper inner side of the internal gear ring, all of which are radially distributed in a ring about the axial direction of the internal gear ring. At least two second adjustment plates are provided on the lower inner side of the internal gear ring, all of which are radially distributed in a ring about the axial direction of the internal gear ring. The toothed ring is radially distributed in a ring shape along its axis. The number of first adjusting plates is the same as the number of second adjusting plates. The end of the first adjusting plate away from the axis of the inner toothed ring and the end of the second adjusting plate away from the axis of the inner toothed ring are both provided with second meshing teeth. The second meshing teeth mesh with the first meshing teeth. The adjacent first adjusting plates and second adjusting plates are staggered along the circumference of the inner toothed ring. The ends of all first adjusting plates near the axis of the inner toothed ring and the ends of all second adjusting plates near the axis of the inner toothed ring can move closer or further apart under meshing action to achieve continuous adjustment of the flow area of ​​the storage channel.

[0017] By setting an adjustment mechanism in the mounting base, the flow area of ​​the material channel can be dynamically adjusted according to the actual working conditions, thereby flexibly controlling the gas rising speed, effectively avoiding flooding, adapting to different throughput and raw material properties, responding quickly, and requiring no downtime for adjustment, significantly improving the operational flexibility and stability of the fractionation tower; the adjacent first and second adjustment plates are staggered in the circumferential direction, and during the closing or gradual opening process, they can form a mechanical seal at the end away from the axis of the inner toothed ring in the vertical direction, effectively reducing gas leakage, improving fractionation efficiency, and having an anti-erosion function. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the naphtha fractionation tower provided by the present invention; Figure 2 A schematic diagram of the mounting base for the naphtha fractionation tower provided by the present invention; Figure 3 An exploded view of a portion of the mounting base, tray, and adjustment mechanism provided by this invention; Figure 4 An exploded view of a partial structure of the regulating mechanism of the naphtha fractionation tower provided by the present invention; Figure 5 An exploded view showing the connection relationship between the mounting base and the tray of the naphtha fractionation tower provided by this invention.

[0020] In the picture: 10. Distillation tower body; 20. Mounting base; 21. Rotation channel; 22. Adjustment channel; 23. Slide rail; 30. Tray; 31. Threaded block; 32. Screw; 41. Internal gear ring; 42. First adjusting plate; 43. Second adjusting plate; 44. Motor; 45. Gear; 411. First meshing tooth; 412. Third meshing tooth; 421. Second meshing tooth; 422. Rotating shaft. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] This embodiment provides a naphtha fractionation tower, such as Figures 1 to 5 As shown, the naphtha fractionation tower includes a fractionation tower body 10, a mounting base 20, and a tower tray 30.

[0029] The mounting base 20 is a hollow structure, generally ring-shaped or cylindrical, with a storage channel running through its axial side wall for the passage of gas and liquid phases and for mounting the tray 30. The mounting base 20 includes an adjustment mechanism for dynamically adjusting the gas flow area of ​​the storage channel.

[0030] like Figures 2 to 4 As shown, the adjustment mechanism includes an internal gear ring 41, a first adjustment plate 42, and a second adjustment plate 43. The internal gear ring 41 is horizontally rotatably disposed inside the mounting base 20 and can rotate around its own axis. The inner wall of the internal gear ring 41 has a toothed surface structure, with first meshing teeth 411 arranged around the entire circumference. At least two first adjusting plates 42 are provided on the upper inner side of the internal gear ring 41, and all the first adjusting plates 42 are arranged radially in a ring about the axial direction of the internal gear ring 41. At least two second adjusting plates 43 are provided on the lower inner side of the internal gear ring 41, and all the second adjusting plates 43 are arranged radially in a ring about the axial direction of the internal gear ring 41. The number of first adjusting plates 42 is the same as the number of second adjusting plates 43. Second meshing teeth 421 are provided on the end of the first adjusting plate 42 away from the axis of the internal gear ring 41 and the end of the second adjusting plate 43 away from the axis of the internal gear ring 41. The second meshing teeth 421 mesh with the first meshing teeth 411, and the adjacent first adjusting plates 42 and second adjusting plates 43 are staggered along the circumferential direction of the internal gear ring 41. That is, in the top view projection, one first adjusting plate 42 is adjacent to two second adjusting plates 43. All the ends of the first adjusting plates 42 near the axis of the internal gear ring 41 and all the ends of the second adjusting plates 43 near the axis of the internal gear ring 41 can move closer or further apart under meshing action, so as to achieve continuous adjustment of the flow area of ​​the storage channel.

[0031] By setting an adjustment mechanism, the flow area of ​​the material placement channel can be adjusted in real time, thereby controlling the rising speed of the gas. When the processing volume fluctuates or the composition of the raw materials changes, the appropriate gas-liquid ratio can be maintained by adjusting the gas flow rate, avoiding liquid flooding caused by excessively fast airflow or leakage caused by excessively slow airflow, ensuring efficient and stable separation process. The gas flow rate can be quickly adjusted for raw materials of different sources or properties, improving the adaptability of the device to changes in raw materials and reducing product quality fluctuations caused by fluctuations in operating conditions.

[0032] In an alternative implementation, the adjustment mechanism further includes a drive component, such as... Figure 3 As shown, the drive assembly includes a gear 45 and a motor 44. The gear 45 is horizontally positioned, and the output end of the motor 44 is connected to the gear 45 to drive the gear 45 to rotate in the horizontal plane. The outer wall of the internal gear ring 41 is provided with a third meshing tooth 412. A rotation channel 21 is provided on the outer wall of the mounting base 20 corresponding to the position of the third meshing tooth 412. The rotation channel 21 extends radially through the mounting base 20, and the third meshing tooth 412 protrudes to the outside of the mounting base 20 through the rotation channel 21 and meshes with the gear 45. Optionally, the third meshing teeth 412 are evenly distributed at equal intervals on the outer wall of the internal gear ring 41 along the circumferential direction.

[0033] Optionally, both gear 45 and motor 44 are located on the outside of the distillation tower body 10 to avoid interfering with the medium inside the tower and to facilitate maintenance.

[0034] Optionally, a sensor for detecting gas flow rate is provided in the storage channel. The real-time gas flow rate is obtained by detecting the gas flow rate, and after being processed by the processor, it is fed back to the motor 44 to control the opening and closing state of the regulating plate, forming a closed-loop control and realizing online adjustment.

[0035] When adjustments to the rising gas flow rate or throughput are needed, the motor 44 can be activated to drive the gear 45 to rotate. The gear 45, through the third meshing tooth 412, drives the internal gear ring 41 to rotate horizontally within the mounting base 20. The rotation of the internal gear ring 41, through the engagement of the first meshing tooth 411 and the second meshing tooth 421, drives the first adjusting plate 42 and the second adjusting plate 43 to swing synchronously but in opposite directions around their respective rotation axes. For example, when the internal gear ring 41 rotates clockwise, the first adjusting plate 42 swings inward to close, and the second adjusting plate 43 swings outward to open. However, due to their staggered arrangement, a linear adjustment of the overall flow area is achieved. Because the first adjusting plate 42 and the second adjusting plate 43 are staggered in the circumferential direction, when gradually opened, the adjacent plates overlap in the vertical projection, forming a labyrinthine sealing path, effectively reducing gas leakage from the gaps between the plates, and achieving dynamic, rapid, and low-leakage flow area adjustment. This adjustment process does not require shutdown, has a rapid response, strong adaptability, and can prevent erosion of the tray 30 caused by excessively high local airflow velocity.

[0036] In an alternative implementation, such as Figure 3 and Figure 4 As shown, the first adjusting plate 42 and the second adjusting plate 43 have the same structure. The end of the first adjusting plate 42 away from the axis of the inner toothed ring 41 and the end of the second adjusting plate 43 away from the axis of the inner toothed ring 41 (i.e., the outer end) are respectively provided with a rotating shaft 422 in the vertical direction. The rotating shaft 422 is fixedly connected to the inner wall of the mounting base 20, so that the first adjusting plate 42 and the second adjusting plate 43 can swing around their respective rotating shafts.

[0037] In an optional embodiment, the horizontal cross-section of the first adjusting plate 42 and the horizontal cross-section of the second adjusting plate 43 are both crescent-shaped, with an inner arc and an outer arc that matches the inner sidewall of the inner toothed ring 41. When the ends of all the first adjusting plates 42 and the ends of all the second adjusting plates 43 swing inward to abut against each other, the storage channel can be completely closed; when swinging outward, the storage channel is gradually opened.

[0038] In an optional embodiment, the fractionation column body 10 includes multiple coaxially mounted fractionation column sections, with a common mounting base 20 connecting adjacent fractionation column sections. A tray 30 is detachably connected inside each fractionation column section, and the tray 30 is located above the regulating mechanism. The fractionation column as a whole is composed of multiple sections coaxially connected by mounting bases 20. This modular structure facilitates the manufacturing, transportation, and on-site assembly of large column equipment, while also making the maintenance and replacement of the tray 30 more convenient. The mounting bases 20 between adjacent sections integrate the regulating mechanism and support the tray 30, achieving functional integration and reducing on-site assembly workload.

[0039] It should be noted that the fractionation tower adopts a split design as a whole, and each fractionation tower segment is coaxially connected by mounting base 20. It can be understood that the tray 30 located at the end of the fractionation tower segment is located at the connection point of the two segments when the segments are connected. Therefore, an adjustment mechanism is added to ensure its working status.

[0040] Secondly, the levelness of tray 30 depends on the initial installation accuracy. During operation, deviations can easily occur due to thermal expansion or mechanical vibration. The flatness and levelness of tray 30 are crucial to the performance of the tray. Levelness deviations will lead to uneven gas-liquid distribution, which in turn will reduce separation efficiency.

[0041] like Figure 5As shown, to achieve non-stop adjustment of the tray 30's level, the tray 30 is vertically slidably positioned at the top opening of the storage channel within the mounting base 20. Specifically, at least two threaded blocks 31 are provided on the outer wall of the tray 30. All threaded blocks 31 are evenly distributed at equal intervals along the circumference of the tray 30. Each threaded block 31 has a threaded hole, in which a screw 32 is threadedly engaged. The screw 32 is vertically positioned. A groove 23 is formed on the inner wall of the storage channel on the mounting base 20 at the position corresponding to the threaded block 31. The threaded block 31 is located within the groove 23, and the lower end of the screw 32 is rotatably mounted on the bottom wall of the groove 23. Each threaded block 31 and its corresponding screw 32 constitute an adjustment point, and each adjustment point can be adjusted independently. In this structure, by rotating the screw 32, the threaded block 31 can be driven to move vertically up and down along the slide groove 23, thereby achieving fine adjustment of the overall level of the tray 30, ensuring that it is perpendicular to the axis of the tower body, avoiding local liquid levels that are too high or too low, thus reducing the risk of erosion and preventing the tray 30 from clogging. The number of threaded blocks 31 can be set according to actual conditions.

[0042] By setting up the screw 32, threaded block 31 and slide groove 23 structure, the tray 30 can be locally raised and lowered without disassembling the tray 30, so as to achieve precise and multi-point calibration of the level of the tray 30. This effectively overcomes the level deviation caused by thermal expansion or mechanical vibration, ensures uniform gas-liquid distribution, improves separation efficiency, and is easy to operate without the need for shutdown maintenance.

[0043] Optionally, the threaded block 31 is movably connected to the outer wall of the tray 30, for example, via a slot or ball joint.

[0044] like Figure 2 and Figure 5 As shown, to facilitate external operation of the screw 32, an adjustment channel 22 is provided on the side wall of the mounting base 20 at the position corresponding to the screw 32. The adjustment channel 22 is arranged radially through the side wall of the mounting base 20, and one end of the adjustment channel 22 on the outer wall of the mounting base 20 is an adjustment opening. When it is necessary to adjust the level of the tray 30, it can be adjusted from the outside by operating the screw 32, which is convenient.

[0045] In an alternative embodiment, a sealing cap, such as a threaded cap or flange cap, is detachably connected to the adjustment opening. During normal operation, the sealing cap closes the adjustment channel 22 to prevent leakage; when adjustment is required, the sealing cap is opened, and a tool (such as an Allen wrench) is inserted into the adjustment channel 22 to rotate the screw 32. After adjustment, the levelness of the tray 30 is checked, and the sealing cap is resealed.

[0046] When the tray 30 deviates from its horizontal position due to thermal expansion, mechanical vibration, or initial installation errors, there is no need to stop the machine and ventilate. The operator only needs to open the sealing cover of the corresponding adjustment channel 22 on the outside of the tower body and use a tool to rotate the corresponding screw 32. The rotational motion of the screw 32 is converted into the linear lifting motion of the threaded block 31, thereby finely adjusting the vertical height of the support point of the tray 30. By independently adjusting multiple adjustment points distributed along the circumference, the tray 30 can be accurately calibrated to a horizontal state. This ensures the uniform distribution of the gas and liquid phases on the tray 30, significantly improves the distillation separation efficiency, and avoids erosion of the tray 30 caused by uneven local liquid flow.

[0047] In an alternative embodiment, a flange (not shown) is mounted on the outer wall of the mounting base 20 for connection to the fractionation tower split flange.

[0048] In summary, the naphtha fractionation tower provided by this invention achieves dynamic, rapid, and low-leakage adjustment of the gas flow area through an innovative adjustment mechanism, and achieves precise, non-stop calibration of the tower trays to a level of 30 degrees through an independent horizontal fine-tuning mechanism.

[0049] This naphtha fractionation tower, equipped with an adjustment mechanism consisting of a motor 44, gear 45, internal gear ring 41, first adjustment plate 42, and second adjustment plate 43, can dynamically adjust the flow area of ​​the material channel according to actual operating conditions. This allows for flexible control of the gas rising speed, effectively preventing flooding, adapting to different throughputs and changes in raw material properties, and providing a fast response without requiring shutdown for adjustments. This significantly improves the operational flexibility and stability of the fractionation tower. The adjacent first adjustment plate 42 and second adjustment plate 43 are staggered in both the vertical and circumferential directions. During the closing or gradual opening process, a mechanical seal is formed at the end furthest from the axis of the internal gear ring 41 in the vertical direction, effectively reducing gas escape, improving fractionation efficiency, and providing erosion protection. By setting up the screw 32, threaded block 31 and slide groove 23 structure, the tray 30 can be locally raised and lowered without disassembling the tray 30, so as to achieve precise and multi-point calibration of the level of the tray 30. This effectively overcomes the level deviation caused by thermal expansion or mechanical vibration, ensures uniform gas-liquid distribution, improves separation efficiency, and is easy to operate without the need for shutdown maintenance.

[0050] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

[0051] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A naphtha fractionation tower, characterized in that, The distillation column includes a fractionation column body (10), a mounting base (20), and a tray (30). The mounting base (20) is a hollow structure with a storage channel extending through its axial sidewall. An adjustment mechanism is provided within the mounting base (20), and the adjustment mechanism includes: An internal gear ring (41) is horizontally rotatably disposed within the mounting base (20), and the inner wall of the internal gear ring (41) is provided with first meshing teeth (411); and, The inner upper part of the internal gear ring (41) is provided with at least two first adjusting plates (42), and all the first adjusting plates (42) are arranged radially in a ring about the axial direction of the internal gear ring (41). The inner lower part of the internal gear ring (41) is provided with at least two second adjusting plates (43), and all the second adjusting plates (43) are arranged radially in a ring about the axial direction of the internal gear ring (41). The number of first adjusting plates (42) is the same as the number of second adjusting plates (43). The end of the first adjusting plate (42) away from the axis of the internal gear ring (41) is... The second adjusting plate (43) is provided with a second meshing tooth (421) at the end away from the axis of the inner toothed ring (41). The second meshing tooth (421) meshes with the first meshing tooth (411). The first adjusting plates (42) and the second adjusting plates (43) that are adjacent to each other are staggered along the circumferential direction of the inner toothed ring (41). The ends of all the first adjusting plates (42) near the axis of the inner toothed ring (41) and the ends of all the second adjusting plates (43) near the axis of the inner toothed ring (41) can move closer or further away from each other under the meshing action, so as to realize the continuous adjustment of the flow area of ​​the storage channel.

2. The naphtha fractionation tower according to claim 1, characterized in that, The adjustment mechanism also includes: The drive assembly includes a motor (44) and a gear (45). The output end of the motor (44) is connected to the gear (45). The outer wall of the internal gear ring (41) is provided with a third meshing tooth (412). The outer wall of the mounting base (20) is provided with a rotation channel (21) corresponding to the position of the third meshing tooth (412). The third meshing tooth (412) protrudes from the rotation channel (21) and meshes with the gear (45).

3. The naphtha fractionation tower according to claim 1, characterized in that, The first adjusting plate (42) and the second adjusting plate (43) have the same structure. The end of the first adjusting plate (42) away from the axis of the internal gear ring (41) and the end of the second adjusting plate (43) away from the axis of the internal gear ring (41) are respectively provided with a rotating shaft (422) in the vertical direction. The rotating shaft (422) is fixedly connected to the inner wall of the mounting base (20).

4. The naphtha fractionation tower according to claim 1, characterized in that, The horizontal cross-section of the first adjusting plate (42) and the horizontal cross-section of the second adjusting plate (43) are both crescent-shaped. When all the ends of the first adjusting plate (42) and all the ends of the second adjusting plate (43) respectively abut against each other, the storage channel can be completely closed.

5. The naphtha fractionation tower according to claim 1, characterized in that, The fractionation tower body (10) includes multiple coaxially mounted fractionation tower sections. Two adjacent fractionation tower sections are connected by the same mounting base (20). The tower tray (30) is detachably connected to the fractionation tower section and is located above the regulating mechanism.

6. The naphtha fractionation tower according to claim 5, characterized in that, The tray (30) is slidably disposed vertically at the top opening of the storage channel within the mounting base (20).

7. The naphtha fractionation tower according to claim 6, characterized in that, At least two threaded blocks (31) are provided on the outer wall of the tray (30). All the threaded blocks (31) are evenly distributed at equal intervals along the circumference of the tray (30). The threaded blocks (31) are provided with threaded holes. A screw (32) is threaded in the threaded holes. The screw (32) is arranged in the vertical direction. A groove (23) is provided on the inner wall of the storage channel on the mounting base (20) at the position of the threaded block (31). The threaded block (31) is located in the groove (23), and the lower end of the screw (32) is rotatably disposed on the bottom wall of the groove (23).

8. The naphtha fractionation tower according to claim 7, characterized in that, An adjustment channel (22) is provided on the side wall of the mounting base (20) at the position corresponding to the screw (32). The adjustment channel (22) is arranged to penetrate the side wall of the mounting base (20) radially. One end of the adjustment channel (22) on the outer wall of the mounting base (20) is an adjustment opening.

9. The naphtha fractionation tower according to claim 8, characterized in that, A sealing cap is detachably connected to the adjustment opening.

10. The naphtha fractionation tower according to claim 5, characterized in that, A flange is installed on the outer wall of the mounting base (20) for connection with the fractionation tower split flange.

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