Energy saving column for de-isobutanization

Abstract

The utility model relates to energy -conserving tower technical field discloses a kind of energy -conserving towers of deisobutane, including tower body, it is characterized by: the opposite arc-shaped plate is attached to the outside wall of tower body and close to lower end part place, the side wall of two arc-shaped plates towards tower body is equipped with heat preservation layer, multiple mounting assemblies are equipped between two arc-shaped plates;Filtering box is placed at the side of tower body, filtering cavity is opened in filtering box, the outside wall of filtering box is equipped with the communicating pipe being communicated with tower body, lap joint frame is installed in filtering cavity, the upper end surface of lap joint frame lap joint frame body, filter screen is installed in frame body, filtering cavity below lap joint frame is equipped with lifting assembly;Through the above structure, the mixed solution is filtered by filter screen, so that solid particles in mixed solution can be separated out, solid particles can be prevented from entering cavity, and interference or damage to the device in the cavity can be avoided, and simultaneously, solid particles can also be prevented from mixing into liquid isobutane, affecting the purity of isobutane.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving tower technology, and more specifically, to an energy-saving tower for removing isobutane. Background Technology

[0002] In the petrochemical and related fine chemical industries, isobutane is an important chemical raw material, widely used in alkylation reactions to produce high-octane gasoline, in the production of methyl tert-butyl ether (MTBE), and as a refrigerant. Therefore, the efficient separation and purification of isobutane from liquid mixtures containing isobutane (such as liquefied petroleum gas from refineries and light hydrocarbon mixtures produced by cracking units) is a key link in ensuring the quality of downstream chemical production and improving resource utilization efficiency. Currently, distillation towers are commonly used in industry to separate isobutane. In response to national energy conservation and emission reduction policies and to reduce enterprise production costs, isobutane removal towers with energy-saving characteristics are gradually becoming the mainstream direction of industry research and application.

[0003] However, existing mixtures for processing often contain particulate matter. When these mixtures enter the tower, the solid particles may move randomly within the tower along with the rising or falling airflow. These randomly moving particles can interfere with or damage the equipment within the tower, thus affecting the accurate monitoring and control of process parameters. Furthermore, they may remain as impurities in the product during subsequent collection and storage. These residual solid particles not only reduce the purity of isobutane but may also act as undesirable catalysts or inhibitors in subsequent chemical reactions (such as alkylation reactions), affecting the reaction rate and product yield. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving tower for isobutane removal, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An energy-saving tower for isobutane removal includes a tower body, with opposing arc-shaped plates attached to the outer side wall of the tower body near the lower end. An insulation layer is installed on the two arc-shaped plates facing the side wall of the tower body. Multiple mounting components are provided between the two arc-shaped plates, which are used to detach and install the two arc-shaped plates on the side wall of the tower body.

[0007] A filter box is placed on one side of the tower body, and a filter chamber is opened inside the filter box. A connecting pipe is provided on the outer wall of the filter box, which is connected to the tower body. An overlapping frame is installed in the filter chamber, and a frame body is connected to the upper end of the overlapping frame. A filter screen for filtering the mixture is installed in the frame body. A lifting component is provided in the filter chamber located below the overlapping frame. The lifting component is used to drive the frame to adjust its height.

[0008] Preferably, multiple fixing plates are installed on the outer walls of the two arc-shaped plates near both ends;

[0009] The mounting assembly includes a placement plate whose lower end face rests on the upper end face of two fixed plates. Opposing limiting plates are mounted on the lower end face of the placement plate. The two limiting plates are attached to the side walls of the two fixed plates that are far apart from each other. A positioning box is installed on the lower end face of the placement plate and between the two fixed plates. A positioning cavity is opened in the positioning box, and a positioning component is provided in the positioning cavity for positioning the position of the placement plate.

[0010] Preferably, the positioning element includes movable plates placed opposite each other in the positioning cavity. Multiple insert rods are installed on the sidewalls of the two movable plates that are far apart from each other. Opposite positioning plates are installed in the positioning cavity and between the two movable plates. Opposite positioning rods that pass through the corresponding movable plates are installed on the sidewalls of the two positioning plates that are far apart from each other. A spring is sleeved on the positioning rod between the movable plate and the positioning plate. The spring is used to push the movable plate away from the positioning plate.

[0011] Preferably, each of the two movable plates has a bent rod installed on its relatively close sidewalls, with one end penetrating through the corresponding positioning plate. The penetrating end of the bent rod is bent to form a bent portion. The two bent rods are staggered. A round rod is rotatably installed in the positioning cavity between the two bent portions. A round plate is sleeved on the outer sidewall of the round rod. Opposite swing rods are installed on the outer sidewall of the round plate.

[0012] Preferably, the lifting assembly includes a rotating rod rotatably installed inside the filter chamber, with opposing push rods installed at both ends of the rotating rod, one end of the rotating rod extending out of the filter box, and a locking element for locking the rotation of the rotating rod at the extended end.

[0013] Preferably, the outer wall of the filter box is provided with multiple insertion holes, the outer wall of the extended end of the rotating rod is provided with a groove, and the extended end of the rotating rod is also fitted with a plug ring;

[0014] The locking element includes a sliding plate that is slidably sleeved on the outer wall of the rotating rod. A protrusion with one end inserted into a groove is installed on the side wall of the sliding plate, and a corresponding locking block is installed on the side wall of the slide plate facing the filter box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model effectively filters the mixed liquid using a filter screen, separating and retaining solid particles in the liquid. This prevents these particles from entering the tower body with the liquid, thus preventing interference or damage to internal tower components (such as heating plates and trays) and ensuring stable monitoring and control of process parameters. Simultaneously, the improved purity of the filtered mixed liquid ensures that the isobutane product is not contaminated by impurities, thereby enhancing the purity of isobutane and the quality and efficiency of downstream chemical reactions.

[0017] 2. This utility model utilizes an insulation layer on the outer side of the tower body, tightly bonded to the tower wall by an arc-shaped plate, forming an effective heat insulation barrier. This significantly reduces heat loss from the tower to the external environment, eliminating the need for frequent high-power operation of the heating plates to compensate for heat loss and significantly reducing energy consumption. It not only saves operating costs but also improves the energy efficiency of the distillation process, meeting industry requirements for energy conservation and emission reduction, and achieving the dual goals of energy saving and high production efficiency.

[0018] 3. This utility model uses a lifting component to drive the filter screen to rise and fall to the opening of the filter chamber, which makes it easier for staff to clean up accumulated solid particles or replace the filter screen, reducing maintenance difficulty and time. Attached Figure Description

[0019] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0020] Figure 2 This is a schematic diagram of a half-section of the tower body in this utility model.

[0021] Figure 3 This is a schematic diagram of the arc-shaped plate and the placement plate in this utility model.

[0022] Figure 4 This is a schematic diagram of the positioning cavity in this utility model.

[0023] Figure 5 This is a schematic diagram of the bent rod in this utility model.

[0024] Figure 6 This is a half-sectional view of the filter box in this utility model.

[0025] Figure 7 for Figure 1 A magnified structural diagram of point A in the middle.

[0026] Figure 8 This is an exploded structural diagram of the rotating rod and sliding plate in this utility model.

[0027] The meanings of the labels in the diagram are as follows:

[0028] 100. Tower body; 101. First row of pipes; 102. Second row of pipes; 110. Arc-shaped plate; 120. Filter box; 130. Water pump;

[0029] 200. Heating plate; 210. Tray; 220. Condenser; 230. Inclined plate;

[0030] 300. Fixing plate; 310. Placement plate; 311. Limiting plate; 320. Positioning box;

[0031] 400. Positioning plate; 410. Positioning rod; 420. Spring; 430. Moving plate; 431. Insert rod;

[0032] 500. Bending rod; 510. Bending section; 520. Round rod; 521. Round plate; 522. Swing rod;

[0033] 600, Overlapping frame; 610, Frame; 611, Filter screen; 620, Rotating rod; 621, Push rod; 701, Groove; 702, Insertion hole; 710, Sliding plate; 720, Handle;

[0034] 800, locking block; 810, protrusion; 820, blocking ring. Detailed Implementation

[0035] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0036] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.

[0037] like Figure 1 , Figure 2 and Figure 6 As shown, an energy-saving tower for isobutane removal in this embodiment includes a tower body 100. Opposing arc-shaped plates 110 are attached to the outer side wall of the tower body 100 near the lower end. An insulation layer is installed on the two arc-shaped plates 110 facing the side wall of the tower body 100. Multiple installation components are provided between the two arc-shaped plates 110. The installation components are used to assemble and disassemble the two arc-shaped plates 110 on the side wall of the tower body 100.

[0038] A filter box 120 is placed on one side of the tower body 100. A filter chamber is opened inside the filter box 120. A connecting pipe communicating with the tower body 100 is provided on the outer side wall of the filter box 120. An overlapping frame 600 is installed in the filter chamber. The upper end face of the overlapping frame 600 overlaps with the frame body 610. A filter screen 611 for filtering the mixture is installed in the frame body 610. A lifting component is provided in the filter chamber located below the overlapping frame 600. The lifting component is used to drive the frame to adjust its height.

[0039] In this embodiment, a cavity is provided inside the tower body 100. A first connecting pipe communicating with the cavity is installed at the lower end of the tower body 100. A first row of pipes 101 communicating with the filter cavity is installed on the side wall of the filter box 120. A solenoid valve is installed inside the first row of pipes 101. A water pump 130 is installed at the end of the first connecting pipe. A second connecting pipe communicating with the cavity is installed on the water pump 130. A heating plate 200 is installed on the side wall of the cavity at the lower end. A tower plate 210 is installed in the cavity above the heating plate 200. An inclined condenser 220 is installed at the upper end of the cavity. An inclined inclined plate 230 is installed below the condenser 220. A second row of pipes 102 is installed in the inclined direction of the inclined plate 230.

[0040] When the mixture needs to be processed, it is poured into the filter chamber. After being filtered by the filter screen 611, the solid particles in the mixture accumulate on the upper surface of the filter screen 611. The filtered mixture is located in the filter chamber below the filter screen 611. At this time, the water pump 130 draws the filtered mixture from the filter chamber through the first connecting pipe. The drawn mixture is then transported into the cavity through the second connecting pipe. At this time, the heating plate 200 in the cavity heats the mixture. The liquid is heated, causing the isobutane in the mixture to vaporize and separate from the mixture. At this time, the vaporized isobutane begins to rise and passes through the tray 210. When the vaporized isobutane rises to the condenser 220, the condenser 220 cools the vaporized isobutane at this point, causing the isobutane to liquefy. The liquefied isobutane falls onto the inclined plate 230. At this time, the liquefied isobutane slides along the inclined plate 230 to the second row of pipes 102 and is discharged from the tower body 100 through the second row of pipes 102.

[0041] When the tower body 100 is no longer in use, the solenoid valve in the first row of pipes 101 is opened so that the remaining mixture in the cavity can be discharged out of the tower body 100.

[0042] The mixture is filtered through filter screen 611, which separates the solid particles in the mixture. Compared with the existing one, this energy-saving tower for removing isobutane can prevent solid particles from entering the cavity and interfering with or damaging the device inside the cavity during actual use. At the same time, it can also prevent solid particles from mixing into the liquid isobutane and affecting the purity of the isobutane.

[0043] When the filter screen 611 is no longer in use, the frame 610 can be moved upward by the lifting component. The upward movement of the frame 610 can also move the filter screen 611 upward, so that the filter screen 611 can be moved to the opening of the filter chamber, so that the staff can clean the solid particles on the filter screen 611. At the same time, the staff can remove the frame 610 and the filter screen 611 from the filter chamber for replacement or cleaning.

[0044] When the frame 610 and filter screen 611 have been replaced or cleaned, the lifting assembly is released from moving the frame 610 upward. At this time, the frame 610 is placed in the filter chamber and overlapped on the overlap frame 600, so that the frame 610 and filter screen 611 are installed in the filter chamber. At this time, the frame 610 and the side wall of the filter chamber are in a sliding fit.

[0045] In this design, two arc-shaped plates 110 are installed on both sides of the column body 100 by means of an installation component, so that the insulation layer at the upper end of the arc-shaped plates 110 can be tightly attached to the outer wall of the column body 100. When the heating plate 200 heats the mixture, the temperature inside the column rises rapidly, and the volatile isobutane gradually vaporizes and flows upward. At this time, the insulation layer fixed to the arc-shaped plates 110 on both sides of the column body 100 will be tightly attached to the column wall, forming an effective heat insulation barrier. The insulation layer can significantly reduce the heat loss from the column to the air through the outer wall, so that the bottom of the column body 100 can maintain a high temperature to continuously vaporize the mixture. There is no need for the heating plate 200 to frequently operate at high power to make up for heat loss. In this way, the energy consumption of the heating plate 200 is significantly reduced. The energy that might have been lost due to heat dissipation is fully used for the separation and purification of isobutane, which not only ensures the distillation efficiency but also reduces energy consumption, thus achieving the effect of energy saving.

[0046] Among them, the arc plate 110 is semi-arc in shape. When the installation assembly installs the arc plate 110 on the outer wall of the tower body 100, the arc plate 110 can be completely attached to the tower body 100, that is, the insulation layer can be completely attached to the outer wall of the tower body 100.

[0047] In actual use, when the installation components release the fixation of the two arc-shaped plates 110 to the side wall of the tower body 100, the staff can replace the arc-shaped plates 110 and then replace the insulation layer on the arc-shaped plates 110, thus avoiding the insulation layer from deteriorating due to long-term use.

[0048] like Figure 1 and Figure 3 As shown, in this embodiment, multiple fixing plates 300 are installed on the outer side walls of the two arc-shaped plates 110 near both ends.

[0049] The mounting assembly includes a placement plate 310 whose lower end face rests on the upper end face of two fixed plates 300. Opposing limiting plates 311 are mounted on the lower end face of the placement plate 310. The two limiting plates 311 are attached to the side walls of the two fixed plates 300 that are far apart from each other. A positioning box 320 is installed on the lower end face of the placement plate 310 and located between the two fixed plates 300. A positioning cavity is opened in the positioning box 320, and a positioning element for positioning the position of the placement plate 310 is provided in the positioning cavity.

[0050] In this embodiment, when the two arc-shaped plates 110 are placed on both sides of the tower body 100, the fixing plates 300 on the two arc-shaped plates 110 are in a relative state. Then, the placement plate 310 is placed on the upper end face of the two fixing plates 300, so that the two limiting plates 311 on the lower end face of the placement plate 310 can be attached to the side walls of the two fixing plates 300 that are far apart from each other. At this time, the two limiting plates 311 limit the fixing plates 300 on the two arc-shaped plates 110, so that the two arc-shaped plates 110 cannot be far apart from each other, so that the two arc-shaped plates 110 can always be attached to the outer side wall of the tower body 100 through the insulation layer, thereby realizing the installation of the arc-shaped plates 110 on the outer side wall of the tower body 100.

[0051] When the placement plate 310 moves the two limiting plates 311 away from the tower body 100, the two limiting plates 311 will release their restriction on the fixing plate 300, thereby releasing the installation of the two arc-shaped plates 110 on the outer wall of the tower body 100. To avoid this situation, the positioning box 320 is positioned by the positioning component in the positioning cavity, so that the positioning box 320 can be fixed between the two fixing plates 300. That is, the placement plate 310 can always be fixed on the upper surface of the two fixing plates 300, thereby preventing the placement plate 310 from moving the two limiting plates 311 away from the tower body 100 and releasing the restriction on the fixing plate 300.

[0052] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the positioning component includes movable plates 430 placed opposite each other in the positioning cavity. Multiple insert rods 431 are installed on the sidewalls of the two movable plates 430 that are far apart from each other. A positioning plate 400 is installed opposite each other in the positioning cavity and between the two movable plates 430. A positioning rod 410 is installed opposite each other and passes through the corresponding movable plate 430 on the sidewalls of the two positioning plates 400 that are far apart from each other. A spring 420 is sleeved on the positioning rod 410 between the movable plate 430 and the positioning plate 400. The spring 420 is used to push the movable plate 430 away from the positioning plate 400.

[0053] In this embodiment, the positioning plate 400 limits the spring 420, so that the spring 420 on the positioning rod 410 can push the moving plate 430 to move along the positioning rod 410. When the spring 420 pushes the moving plate 430 away from the positioning plate 400, the insertion rod 431 on the moving plate 430 will pass through the positioning box 320 and be inserted into the fixed plate 300, thereby realizing the positioning of the positioning box 320 between the two fixed plates 300.

[0054] In this configuration, each of the two movable plates 430 has a bent rod 500 installed on its relatively close sidewalls, with one end penetrating through the corresponding positioning plate 400. The penetrating end of the bent rod 500 is bent to form a bent portion 510. The two bent rods 500 are staggered. A round rod 520 is rotatably installed in the positioning cavity between the two bent portions 510. The round rod 520 is rotatably installed in the sidewall of the positioning cavity via a bearing. A round plate 521 is fixedly sleeved on the outer sidewall of the round rod 520. Opposing swing rods 522 are installed on the outer sidewall of the round plate 521. When the round rod 520 rotates, it can drive the round plate 522 to rotate. The plate 521 rotates, which drives the two swing rods 522 to move along the circumference of the plate 521. The movement of the two swing rods 522 can push the corresponding bent part 510 to move. The movement of the bent part 510 can drive the corresponding moving plate 430 to move through the bending rod 500. At this time, the two moving plates 430 approach each other. When the two moving plates 430 approach each other, the insert rods 431 on the two moving plates 430 will slide out from the two fixed plates 300, thereby releasing the positioning box 320 between the two fixed plates 300.

[0055] One end of the round rod 520 extends out of the positioning box 320, and a rotating block is installed on the extended end of the round rod 520, which facilitates the rotation of the round rod 520.

[0056] In actual use, when the positioning box 320 is placed between the two fixed plates 300, the rotating block drives the round rod 520 to rotate, so that the insertion rod 431 on the two moving plates 430 retracts into the positioning cavity, so as to prevent one end of the insertion rod 431 from extending out of the positioning box 320 and affecting the placement of the positioning box 320 between the two fixed plates 300.

[0057] like Figure 1 and Figure 6 As shown, in this embodiment, the lifting assembly includes a rotating rod 620 rotatably installed in the filter chamber. Opposite push rods 621 are installed at both ends of the rotating rod 620. One end of the rotating rod 620 extends out of the filter box 120. The extended end of the rotating rod 620 is provided with a locking member for locking the rotation of the rotating rod 620.

[0058] In this embodiment, the rotating rod 620 is rotatably mounted on the side wall of the filter chamber via a bearing. When the rotating rod 620 rotates, it can drive the two push rods 621 to rotate along the circumference of the rotating rod 620. When the push rods 621 move toward the frame 610, they can push the frame 610 upward, that is, the frame 610 drives the filter screen 611 upward, so that the filter screen 611 can move upward to the opening of the filter chamber.

[0059] When the rotating rod 620 rotates and drives the pushing rod 621 away from the frame 610, the pushing rod 621 releases the pushing on the frame 610. At this time, the frame 610 and the filter screen 611 are affected by their own gravity, and the frame 610 and the filter screen 611 move down and overlap at the upper end of the overlapping frame 600.

[0060] When the push rod 621 pushes the frame 610 to the highest position, the position of the rotating rod 620 after rotation needs to be locked by the locking device so that the push rod 621 can always push the frame 610 to maintain the position after it has been moved up, so that the staff can clean the filter screen 611.

[0061] like Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, the outer wall of the filter box 120 is provided with a plurality of insertion holes 702, the outer wall of the extended end of the rotating rod 620 is provided with a groove 701, and the extended end of the rotating rod 620 is also fitted with a plugging ring 820.

[0062] The locking element includes a sliding plate 710 that is slidably sleeved on the outer side wall of the rotating rod 620. A protrusion 810 with one end inserted into the groove 701 is installed on the side wall of the sliding plate 710. A corresponding locking block 800 is installed on the side wall of the sliding plate 710 facing the filter box 120.

[0063] In this embodiment, the groove 701 is arranged along the length of the rotating rod 620. The protrusion 810 is inserted into the groove 701 to realize the sliding installation of the sliding plate 710 on the outer wall of the rotating rod 620. When the sliding plate 710 rotates, the sliding plate 710 can drive the rotating rod 620 to rotate through the cooperation of the protrusion 810 and the groove 701. After the sliding plate 710 has completed its rotation, it is driven to move towards the filter box 120, and the locking block 800 on the sliding plate 710 is inserted into the insertion hole 702 to lock the position of the rotating rod 620 after rotation.

[0064] When the sliding plate 710 moves away from the filter box 120, the locking block 800 on the sliding plate 710 slides out from the insertion hole 702, which releases the locking of the sliding plate 710 on the rotating rod 620. At this time, the sliding plate 710 can drive the rotating rod 620 to rotate.

[0065] The blocking ring 820 can limit the sliding plate 710 on the rotating rod 620, preventing the sliding plate 710 from sliding too far away from the filter box 120, causing it to fall off the rotating rod 620.

[0066] The sliding plate 710 is equipped with a U-shaped handle 720 on the side wall away from the locking block 800. The handle 720 facilitates the movement and rotation of the sliding plate 710.

[0067] In practical use, the mixture is first poured into the filter chamber. After being filtered by the filter screen 611, the solid particles in the mixture accumulate on the upper surface of the filter screen 611. The filtered mixture is located in the filter chamber below the filter screen 611. At this time, the water pump 130 draws the filtered mixture from the filter chamber through the first connecting pipe. The drawn mixture is then transported into the cavity through the second connecting pipe. Meanwhile, the heating plate 200 in the cavity heats the mixture. Heating causes the isobutane in the mixture to vaporize, separating it from the mixture. The vaporized isobutane rises and passes through tray 210. When the vaporized isobutane reaches condenser 220, condenser 220 cools it down, liquefying it. The liquefied isobutane falls onto inclined plate 230, slides along inclined plate 230 to the second row of pipes 102, and is discharged from tower 100 through the second row of pipes 102.

[0068] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. An energy-saving tower for isobutane removal, comprising a tower body (100), characterized in that: The outer side wall of the tower body (100) and near the lower end are fitted with opposing arc-shaped plates (110). The two arc-shaped plates (110) are fitted with insulation layers facing the side wall of the tower body (100). Multiple mounting components are provided between the two arc-shaped plates (110). The mounting components are used to install and remove the two arc-shaped plates (110) from the side wall of the tower body (100). A filter box (120) is placed on one side of the tower body (100). A filter chamber is opened inside the filter box (120). A connecting pipe communicating with the tower body (100) is provided on the outer side wall of the filter box (120). An overlapping frame (600) is installed in the filter chamber. A frame (610) overlaps the upper end of the overlapping frame (600). A filter screen (611) for filtering the mixture is installed in the frame (610). A lifting component is provided in the filter chamber located below the overlapping frame (600). The lifting component is used to drive the frame to adjust its height.

2. The energy-saving tower for isobutane removal according to claim 1, characterized in that: Multiple fixing plates (300) are installed on the outer side walls of the two arc-shaped plates (110) and near both ends. The mounting assembly includes a placement plate (310) whose lower end face is placed on the upper end face of two fixed plates (300). The lower end face of the placement plate (310) is equipped with opposing limiting plates (311). The two limiting plates (311) are attached to the side walls of the two fixed plates (300) that are far apart from each other. A positioning box (320) is installed on the lower end face of the placement plate (310) and located between the two fixed plates (300). A positioning cavity is provided in the positioning box (320), and a positioning element is provided in the positioning cavity for positioning the position of the placement plate (310).

3. The energy-saving tower for isobutane removal according to claim 2, characterized in that: The positioning component includes movable plates (430) placed opposite each other in the positioning cavity. Multiple insert rods (431) are installed on the side walls of the two movable plates (430) that are far apart from each other. Opposite positioning plates (400) are installed in the positioning cavity and between the two movable plates (430). Opposite positioning rods (410) that pass through the corresponding movable plates (430) are installed on the side walls of the two positioning plates (400) that are far apart from each other. A spring (420) is sleeved on the positioning rod (410) between the movable plate (430) and the positioning plate (400). The spring (420) is used to push the movable plate (430) away from the positioning plate (400).

4. The energy-saving tower for isobutane removal according to claim 3, characterized in that: Two movable plates (430) are each fitted with a bent rod (500) that passes through the corresponding positioning plate (400) on their relatively close sidewalls. The through end of the bent rod (500) is bent to form a bent part (510). The two bent rods (500) are staggered. A round rod (520) is rotatably installed in the positioning cavity between the two bent parts (510). A round plate (521) is sleeved on the outer sidewall of the round rod (520). Opposite swing rods (522) are installed on the outer sidewall of the round plate (521).

5. The energy-saving tower for isobutane removal according to claim 1, characterized in that: The lifting assembly includes a rotating rod (620) rotatably installed in the filter chamber. Opposite push rods (621) are installed at both ends of the rotating rod (620). One end of the rotating rod (620) extends out of the filter box (120). The extended end of the rotating rod (620) is provided with a locking element for locking the rotation of the rotating rod (620).

6. The energy-saving tower for isobutane removal according to claim 5, characterized in that: The outer wall of the filter box (120) is provided with multiple insertion holes (702), the outer wall of the extended end of the rotating rod (620) is provided with a groove (701), and the extended end of the rotating rod (620) is also fitted with a plug ring (820). The locking element includes a sliding plate (710) that is slidably sleeved on the outer wall of the rotating rod (620). A protrusion (810) with one end inserted into a groove (701) is installed on the side wall of the sliding plate (710). A corresponding locking block (800) is installed on the side wall of the slide plate facing the filter box (120).

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