A n-hexane distillation separation device

Abstract

The present invention relates to the field of n-hexane distillation and separation, in particular to a n-hexane distillation and separation device, comprising a distillation mechanism, which comprises a distillation tower, a steam pipe connected to the top of the distillation tower, an end of the steam pipe away from the distillation tower is connected to the inlet end of a condenser, the condenser is mounted on the distillation tower through a fixing piece, and a conduit is connected to the discharge end of the condenser, an end of the conduit away from the condenser is communicated with a collection tower, and a knocking mechanism comprises a support plate arranged on the distillation tower, an installation box is connected to the support plate, a knocking block is provided on the top of the installation box, an installation groove is provided inside the installation box, a driving assembly and a power storage assembly are provided inside the installation groove, intermittent knocking of the conduit is achieved by the knocking mechanism, n-hexane adhered to the inner wall of the conduit is knocked off, the n-hexane flows into the interior of the collection tower along the inclined conduit, and the collection efficiency during n-hexane separation is increased.

Description

Technical Field

[0001] The present invention relates to the field of n-hexane distillation and separation, in particular to a n-hexane distillation and separation device. Background Art

[0002] n-Hexane is a hydrocarbon with the chemical formula C6H14. It is a colorless, volatile liquid with a distinctive odor. It is primarily used in organic synthesis, as a solvent, and in chromatography. Due to its high purity and low impurity content, n-hexane is very popular in laboratory and industrial applications.

[0003] During n-hexane production, raw industrial hexane and an extractive distillation solvent (such as dimethyl phthalate) are added to an extractive distillation column in a specific ratio. The product is eventually discharged as vapor before being liquefied and collected in a condenser. However, a large amount of n-hexane often adheres to the inner wall of the pipe at the condenser's discharge end, reducing the n-hexane separation efficiency and potentially causing pipe blockage, impacting the normal operation of the equipment. Currently, common solutions to this problem include regular manual cleaning and the use of chemical solvents. While these methods can address the issue to a certain extent, they have the following drawbacks: manual cleaning requires equipment downtime, increasing equipment downtime and reducing production efficiency; chemical solvent cleaning can introduce new impurities, affecting the purity of the n-hexane, while also increasing operating costs and environmental impact.

[0004] Therefore, a n-hexane distillation separation device is proposed. Summary of the Invention

[0005] Given that large amounts of n-hexane often adhere to the inner wall of the pipe at the condenser discharge end in the aforementioned or prior art processes, this not only reduces n-hexane separation efficiency but can also cause pipe blockage, impacting the normal operation of the equipment. Currently, common solutions to this problem include regular manual cleaning and chemical solvent cleaning. While these methods can address the issue to some extent, they have the following drawbacks: manual cleaning requires equipment downtime, increasing equipment downtime and reducing production efficiency; chemical solvent cleaning can introduce new impurities, affecting n-hexane purity, and increasing operating costs and environmental impact. This is why the present invention was developed.

[0006] Therefore, the object of the present invention is to provide a normal hexane rectification and separation device.

[0007] To solve the above technical problems, the present invention provides the following technical solution: comprising a distillation mechanism, comprising a distillation tower, a steam pipe connected to the top of the distillation tower, an end of the steam pipe away from the distillation tower being connected to the inlet end of a condenser, the condenser being mounted on the distillation tower via a fixing member, and a conduit connected to the discharge end of the condenser, an end of the conduit away from the condenser being connected to a collection tower;

[0008] The knocking mechanism includes a support plate arranged on the distillation tower, an installation box is connected to the support plate, a knocking block is arranged on the top of the installation box, an installation groove is opened inside the installation box, a driving assembly and a power storage assembly are arranged inside the installation groove, the power storage assembly is connected to the knocking block, and a discharge assembly is installed between the power storage assembly and the driving assembly.

[0009] As a preferred embodiment of the n-hexane distillation separation device of the present invention, the drive assembly includes a thermosensitive wax and a heat-conducting plate arranged inside the mounting groove, one end of the heat-conducting plate is located inside the thermosensitive wax, and the other end of the heat-conducting plate passes through the mounting groove and extends to the inside of the steam pipe. A piston plate is also provided inside the mounting groove, and the piston plate is located on top of the thermosensitive wax.

[0010] As a preferred solution of the n-hexane distillation separation device of the present invention, the piston plate matches the mounting groove, and the piston plate is made of heat-conducting material.

[0011] As a preferred solution of the n-hexane distillation and separation device of the present invention, the force storage assembly includes a first telescopic rod and a first spring arranged on the top of the piston plate, the first spring is sleeved on the surface of the first telescopic rod, and the end of the first telescopic rod and the first spring away from the piston plate is connected to a column, and the end of the column away from the first telescopic rod extends out of the mounting groove and is connected to the knocking block.

[0012] As a preferred solution of the n-hexane distillation and separation device of the present invention, the force storage component further includes an extrusion block arranged on the column, a first plane is provided on the extrusion block, a telescopic part is horizontally installed inside the mounting groove, a limit strip is connected to the telescopic part, and a second plane is provided on the limit strip.

[0013] As a preferred solution of the n-hexane distillation separation device of the present invention, the displacement assembly includes a concave plate arranged on the top of the piston plate, the concave plate is provided with a first inclined surface, and the limiting bar is provided with a second inclined surface.

[0014] As a preferred embodiment of the n-hexane distillation and separation device of the present invention, the power storage component includes a sealing ring provided on the top of the installation box, and a notch opened on the top of the installation box, the column passes through the notch, and there is a gap between the column and the notch, the sealing ring is annular, and the size of the sealing ring is larger than the size of the notch.

[0015] As a preferred solution of the n-hexane distillation separation device of the present invention, the exhaust assembly further includes a third inclined surface provided on the extrusion block and a fourth inclined surface provided on the limiting bar.

[0016] The beneficial effects of the n-hexane distillation and separation device of the present invention are as follows: when the distillation tower is in use, the temperature inside the distillation tower is high, thereby driving the operation of the driving component, causing the driving component to drive the power storage component to store power. When the driving component stores power to a certain extent, the driving component contacts the exhaust component, releasing the limit on the power storage component, causing the power storage component to drive the knocking block to move upward. The bottom of the conduit is knocked. After completion, under the action of the gravity of the power storage component and the knocking block, the power storage component and the knocking block descend. At the same time, external air can enter the interior of the installation groove, thereby reducing the temperature inside the installation groove, and then driving the driving component and the exhaust component to automatically reset. When the temperature inside the installation groove rises, the driving component drives the power storage component to store power, and drives the knocking block in cooperation with the exhaust component, intermittently knocking the conduit, knocking off the n-hexane adhering to the inner wall of the conduit, causing the n-hexane to flow into the interior of the collection tower along the inclined conduit, thereby increasing the collection efficiency during n-hexane separation and avoiding the problem of n-hexane adhering to the conduit and affecting the operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the n-hexane distillation separation device;

[0019] Figure 2 This is a schematic diagram of the structure of the top part of the distillation tower of the n-hexane distillation and separation device;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the knocking mechanism of the n-hexane distillation separation device;

[0021] Figure 4 Schematic diagram of the structure of the power storage component of the n-hexane distillation separation device Figure 1 ;

[0022] Figure 5 Schematic diagram of the structure of the power storage component of the n-hexane distillation separation device Figure 2 ;

[0023] Figure 6This is a schematic diagram of the top section of the installation box of the n-hexane distillation separation device;

[0024] In the figure: 1, distillation mechanism; 11, distillation tower; 12, steam pipe; 13, condenser; 14, conduit; 15, collection tower;

[0025] 2. Knocking mechanism; 21. Support plate; 22. Mounting box; 23. Knocking block; 24. Mounting slot; 25. Driving assembly; 251. Thermal wax; 252. Heat conducting plate; 253. Piston plate; 26. Power storage assembly; 261. First telescopic rod; 262. First spring; 263. Column; 264. Extrusion block; 265. First plane; 266. Telescopic member; 267. Limiting strip; 268. Second plane; 269. Sealing ring; 2610. Notch; 27. Exhaust assembly; 271. Concave plate; 272. First inclined plane; 273. Second inclined plane; 274. Third inclined plane; 275. Fourth inclined plane. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, with reference to Figures 1 to 6, which is the first embodiment of the present invention, provides a n-hexane distillation separation device, which can achieve the effect of knocking on the conduit 14, comprising a distillation mechanism 1, which includes a distillation tower 11, a steam pipe 12 is connected to the top of the distillation tower 11, the end of the steam pipe 12 away from the distillation tower 11 is connected to the inlet end of the condenser 13, the condenser 13 is installed on the distillation tower 11 through a fixing member, and the discharge end of the condenser 13 is connected to the conduit 14, the end of the conduit 14 away from the condenser 13 is connected to the collection tower 15, and the distillation tower 11 is provided with There is a knocking mechanism 2, which includes a support plate 21 fixedly connected to the distillation tower 11, a mounting box 22 connected to the support plate 21, a knocking block 23 provided on the top of the mounting box 22, the knocking block 23 is located at the bottom of the conduit 14, a mounting slot 24 is provided inside the mounting box 22, a driving assembly 25 and a power storage assembly 26 are provided inside the mounting slot 24, the power storage assembly 26 is connected to the knocking block 23, a discharge assembly 27 is installed between the power storage assembly 26 and the driving assembly 25, and a heat exhaust assembly is provided between the power storage assembly 26 and the discharge assembly 27;

[0030] Among them, the distillation tower 11 and the condenser 13 are both very mature equipment in the prior art;

[0031] Among them, the installation box 22 is a heat preservation box with heat preservation function;

[0032] When the distillation tower 11 is in use, the internal temperature of the distillation tower 11 is relatively high, thereby driving the operation of the driving component 25, so that the driving component 25 drives the power storage component 26 to store power. When the driving component 25 stores power to a certain extent, the driving component 25 contacts the exhaust component 27, releasing the limit on the power storage component 26, so that the power storage component 26 drives the knocking block 23 to move upward. The bottom of the conduit 14 is knocked. After completion, the force storage component 26 and the knocking block 23 descend under the action of gravity. At the same time, external air can enter the installation groove 24, thereby reducing the internal temperature of the installation groove 24, and then driving the drive component 25 and the exhaust component 27 to automatically reset. When the internal temperature of the installation groove 24 is rising, the drive component 25 drives the force storage component 26 to store force, and drives the knocking block 23 with the cooperation of the exhaust component 27, and intermittently knocks the conduit 14 to knock off the n-hexane adhering to the inner wall of the conduit 14, so that the n-hexane flows into the interior of the collection tower 15 along the inclined conduit 14, thereby increasing the collection efficiency during n-hexane separation, and avoiding the problem of n-hexane adhering to the inside of the conduit 14 and affecting the operation of the equipment.

[0033] Furthermore, the drive assembly 25 includes a thermosensitive wax 251 and a heat conducting sheet 252 disposed within the mounting groove 24. One end of the heat conducting sheet 252 is located within the thermosensitive wax 251, and the other end of the heat conducting sheet 252 passes through the mounting groove 24 and extends into the interior of the steam pipe 12. A piston plate 253 is also disposed within the mounting groove 24 and is located on top of the thermosensitive wax 251.

[0034] The heat conducting sheet 252 is used to conduct the temperature inside the distillation column 11 into the mounting groove 24, causing the thermosensitive wax 251 to melt. The volume expansion of the thermosensitive wax 251 then drives the piston plate 253 upward. If the heat conducting sheet 252 is partially located outside, an insulation cover can be installed to reduce temperature loss.

[0035] Furthermore, the piston plate 253 matches the mounting groove 24, and the piston plate 253 is made of a heat-conducting material;

[0036] Among them, by matching the piston plate 253 with the mounting groove 24, when the thermal wax 251 expands, it drives the piston plate 253 to rise, and a stable seal is formed between the piston plate 253 and the inside of the mounting groove 24, preventing the thermal wax 251 from flowing from between the piston plate 253 and the inner wall of the mounting groove 24 to the top of the piston plate 253, affecting the operation of the drive component 25 and the virtual component. The piston plate 253 is similar to the piston rod in the prior art, and the seal between the piston plate 253 and the mounting groove 24 is a very mature prior art. At the same time, by matching the piston plate 253 with the mounting groove 24, when the force storage component 26 rises, the first plane 265 on the extrusion block 264 can correspond to the position of the second plane 268 on the limit bar 267. At the same time, it also ensures that the first inclined surface 272 on the concave plate 271 corresponds to the position of the second inclined surface 273 on the limit bar 267 when the force storage component 26 descends.

[0037] The piston plate 253 may be made of a metal skeleton foamed silicone rubber composite sealing plate. This material combines the strength of a metal skeleton with the flexibility of foamed silicone rubber and has good thermal conductivity and sealing properties.

[0038] Furthermore, the force storage assembly 26 includes a first telescopic rod 261 and a first spring 262 arranged on the top of the piston plate 253. The first spring 262 is sleeved on the surface of the first telescopic rod 261. The first telescopic rod 261 ensures that the first spring 262 will only be compressed linearly, thereby ensuring the stability of the first spring 262. The first telescopic rod 261 and the first spring 262 are fixedly connected to the end away from the piston plate 253 with a column 263. The end of the column 263 away from the first telescopic rod 261 extends out of the mounting groove 24 and is fixedly connected to the knocking block 23.

[0039] Furthermore, the power storage assembly 26 further includes an extrusion block 264 provided on the column 263, the extrusion block 264 is provided with a first plane 265, a telescopic member 266 is horizontally installed inside the mounting groove 24, the telescopic member 266 is connected to a limit strip 267, and the limit strip 267 is provided with a second plane 268;

[0040] The telescopic member 266 may be a second telescopic rod and a second spring or other elastic components that can ensure the linear movement of the limiting strip 267 .

[0041] Furthermore, the displacement assembly 27 includes a concave plate 271 arranged on the top of the piston plate 253, and the ends of the first telescopic rod 261 and the first spring 262 away from the column 263 are fixedly connected to the top of the concave plate 271, and a first inclined surface 272 is provided on the concave plate 271, and a second inclined surface 273 is provided on the limit bar 267, and the first inclined surface 272 matches the second inclined surface 273.

[0042] Furthermore, the power storage assembly 26 includes a sealing ring 269 provided on the top of the installation box 22, and a notch 2610 provided on the top of the installation box 22. The column 263 passes through the notch 2610, and there is a gap between the column 263 and the notch 2610. The sealing ring 269 is annular, and the size of the sealing ring 269 is larger than the size of the notch 2610.

[0043] Among them, the notch 2610 is set for the column 263 to slide out, and there is a gap between the column 263 and the notch 2610, so that the column 263 will not contact the notch 2610 during the rising or falling process, reducing the wear of the column 263 and the installation box 22. At the same time, when the knocking block 23 is not in contact with the top of the sealing ring 269, the external air can enter the interior of the installation box 22 from the gap between the notch 2610 and the column 263. By setting the sealing ring 269 into a ring shape and the size of the sealing ring 269 being larger than the size of the notch 2610, when the knocking block 23 is in the initial position, the bottom of the knocking block 23 squeezes the sealing ring 269, and the cooperation with the sealing ring 269 prevents the external air from flowing into the interior of the installation box 22 through the gap between the notch 2610 and the column 263, thereby causing the temperature inside the installation box 22 to drop.

[0044] Furthermore, the sealing ring 269 is made of a high-elasticity and high-temperature resistant material, which can be fluororubber. Fluororubber has excellent high-temperature resistance and chemical stability, and can work stably for a long time in an environment of 240°C, and can even withstand a high temperature of 300°C in a short time. The temperature inside the steam pipe 12 is generally between 60°C and 70°C, and fluororubber is fully applicable. At the same time, fluororubber also has good oil resistance, solvent resistance, fuel oil resistance, high and low temperature resistance, and resistance to corrosion by oxygen-containing compounds, aromatic solvents and chlorine-containing solvents.

[0045] In this embodiment, in the initial state, the first plane 265 on the extrusion block 264 contacts the second plane 268 on the limiting strip 267;

[0046] When in use, as the heat conducting sheet 252 conducts the temperature inside the distillation tower 11 to the inside of the installation box 22, the thermosensitive wax 251 inside the installation box 22 melts, causing the volume of the thermosensitive wax 251 to expand, thereby driving the piston plate 253 to rise, and the piston plate 253 drives the first telescopic rod 261 and the first spring 262 to rise through the concave plate 271, and the first telescopic rod 261 and the first spring 262 drive the column 263 to rise, and the column 263 drives the extrusion block 264 and the knocking block 23 to rise. The first flat surface 265 on the extrusion block 264 contacts the second flat surface 268 on the limit bar 267, so that the column 263 cannot rise, and further the first telescopic rod 261, the first spring 262 and the concave plate 271 cannot rise. That is, as the piston plate 253 drives the concave plate 271 and the first telescopic rod 261 and the first spring 262 thereon to rise, the first telescopic rod 261 and the first spring 262 are compressed, so that the first spring 262 begins to accumulate force. As the piston plate 253 continues to The concave plate 271 is driven to continue to rise. When the first inclined surface 272 on the concave plate 271 contacts the second inclined surface 273 on the limiting strip 267, the first inclined surface 272 on the concave plate 271 squeezes the second inclined surface 273 on the limiting strip 267, thereby causing the limiting strip 267 to squeeze the telescopic member 266, causing the telescopic member 266 to contract. When the second plane 268 on the limiting strip 267 is completely misaligned with the first plane 265 on the extrusion block 264, the extrusion block 264 is not restricted. It can move upward, and at this time the first spring 262 is no longer restricted. Under the elastic force of the first spring 262, the column 263 bounces upward instantly, and the column 263 drives the knocking block 23 to move upward quickly, knocking the bottom of the conduit 14, knocking off the n-hexane adhering to the inner wall of the conduit 14, so that the n-hexane flows into the interior of the collection tower 15 along the inclined conduit 14, thereby increasing the collection efficiency during n-hexane separation and avoiding the problem of n-hexane adhering to the inside of the conduit 14, thereby affecting the operation of the equipment.

[0047] In summary, in this embodiment, a mechanism for knocking on the conduit 14 is provided. By conducting the temperature inside the distillation tower 11 to the inside of the installation box 22, and cooperating with the heat-sensitive wax 251 and the first spring 262, the knocking block 23 can knock on the bottom of the conduit 14, knocking off the n-hexane adhering to the inner wall of the conduit 14, so that the n-hexane flows into the interior of the collection tower 15 along the inclined conduit 14, thereby increasing the collection efficiency during n-hexane separation, and avoiding the problem of n-hexane adhering to the inside of the conduit 14, thereby affecting the operation of the equipment.

[0048] Example 2, reference Figures 1 to 6 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a n-hexane distillation separation device, which solves the problem of heat dissipation of the installation box 22. The exhaust component 27 also includes a third inclined surface 274 provided on the extrusion block 264 and a fourth inclined surface 275 provided on the limiting bar 267.

[0049] Furthermore, the gravity of the force storage assembly 26 is greater than the elastic force of the telescopic member 266, so that when the force storage assembly 26 is descending, the force storage assembly 26 squeezes the fourth slope 275 on the limit bar 267 through the third slope 274 on the extrusion block 264, so that the limit bar 267 squeezes the telescopic member 266, causing the telescopic member 266 to contract, which will not affect the resetting of the force storage assembly 26.

[0050] Furthermore, a buffer pad is provided on the top of the knocking block 23. The setting of the buffer pad reduces the impact force between the knocking block 23 and the catheter 14, so that the knocking block 23 has only a flexible impact on the catheter 14. Since the inside of the catheter 14 is mainly liquid n-hexane, no hard impact is required, which reduces the wear between the knocking block 23 and the catheter 14.

[0051] The rest of the structure is the same as that of Example 1.

[0052] During use, when the knocking block 23 completes knocking on the conduit 14, the force storage assembly 26 is at the highest point and the third inclined surface 274 on the extrusion block 264 contacts the fourth inclined surface 275 on the limit bar 267. At this time, the knocking block 23 does not contact the sealing ring 269, so that the external air can enter the interior of the installation box 22 through the gap between the column 263 and the notch 2610, so that the internal temperature of the installation box 22 is reduced. At the same time, under the action of the piston plate 253, the temperature of the thermal wax 251 is reduced, so that the thermal wax 251 changes from liquid to solid, thereby reducing the volume of the thermal wax 251. As the volume of the thermal wax 251 continues to decrease, the bottom of the piston plate 253 lacks support, and the piston plate 253 and the force storage assembly thereon are Part 26 then descends under the action of gravity. During the descending process, the column 263 continuously squeezes the fourth inclined surface 275 on the limiting strip 267 through the third inclined surface 274 on the extrusion block 264. When the third inclined surface 274 on the third extrusion block 264 is misaligned with the fourth inclined surface 275 on the limiting strip 267, the limiting strip 267 returns to its initial position under the action of the elastic force of the telescopic part 266, so that the second plane 268 on the limiting strip 267 contacts the first plane 265 on the extrusion block 264, thereby limiting the extrusion block 264.

[0053] In summary, in this embodiment, the device is further optimized so that after the force storage component 26 completes the tapping of the catheter 14 through the tapping block 23, the driving component 25 and the force storage component 26 can automatically return to the initial position, thereby achieving intermittent tapping of the catheter 14.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A n-hexane distillation separation device, characterized in that: include, A distillation mechanism (1) comprising a distillation tower (11), wherein a steam pipe (12) is connected to the top of the distillation tower (11), an end of the steam pipe (12) away from the distillation tower (11) is connected to an inlet end of a condenser (13), the condenser (13) is mounted on the distillation tower (11) via a fixing member, and a discharge end of the condenser (13) is connected to a conduit (14), and an end of the conduit (14) away from the condenser (13) is communicated with a collection tower (15); A knocking mechanism (2) comprising a support plate (21) provided on the distillation tower (11), a mounting box (22) connected to the support plate (21), a knocking block (23) provided on the top of the mounting box (22), a mounting slot (24) provided inside the mounting box (22), a driving assembly (25) and a force storage assembly (26) provided inside the mounting slot (24), the force storage assembly (26) being connected to the knocking block (23), and a force discharge assembly (27) provided between the force storage assembly (26) and the driving assembly (25); The driving assembly (25) includes a thermosensitive wax (251) and a heat conducting sheet (252) arranged inside the mounting groove (24), one end of the heat conducting sheet (252) is located inside the thermosensitive wax (251), and the other end of the heat conducting sheet (252) passes through the mounting groove (24) and extends to the inside of the steam pipe (12), and a piston plate (253) is further provided inside the mounting groove (24), and the piston plate (253) is located on top of the thermosensitive wax (251); The piston plate (253) matches the mounting groove (24), and the piston plate (253) is made of a heat-conducting material; The force storage assembly (26) includes a first telescopic rod (261) and a first spring (262) provided on the top of the piston plate (253), the first spring (262) being sleeved on the surface of the first telescopic rod (261), and one end of the first telescopic rod (261) and the first spring (262) away from the piston plate (253) is connected to a column (263), and one end of the column (263) away from the first telescopic rod (261) extends out of the mounting groove (24) and is connected to the knocking block (23); The force storage assembly (26) further includes an extrusion block (264) provided on the column (263), a first plane (265) being provided on the extrusion block (264), a telescopic member (266) being horizontally installed inside the installation slot (24), a limiting strip (267) being connected to the telescopic member (266), and a second plane (268) being provided on the limiting strip (267); The power storage assembly (26) includes a sealing ring (269) provided on the top of the installation box (22), and a notch (2610) provided on the top of the installation box (22). The column (263) passes through the notch (2610), and a gap exists between the column (263) and the notch (2610). The sealing ring (269) is annular, and the size of the sealing ring (269) is larger than the size of the notch (2610).

2. The n-hexane distillation separation device according to claim 1, wherein: The displacement assembly (27) comprises a concave plate (271) disposed on the top of the piston plate (253), a first inclined surface (272) being provided on the concave plate (271), and a second inclined surface (273) being provided on the limiting strip (267).

3. The n-hexane distillation separation device according to claim 1, wherein: The displacement assembly (27) further includes a third inclined surface (274) provided on the extrusion block (264) and a fourth inclined surface (275) provided on the limiting strip (267).

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