Precise separation device for high-purity n-heptane

Abstract

The utility model relates to the technical field of n-heptane production equipment, in particular to a high-purity n-heptane precise separation device which comprises a rectifying tower, a movable assembly and a filtering assembly, the movable assembly is arranged in the rectifying tower and is used for utilizing and transmitting kinetic energy of steam in the rectifying process and carrying out precise separation of n-heptane in cooperation with the filtering assembly; the filtering assembly is arranged on one side of the movable assembly and used for receiving kinetic energy of the movable assembly, adhesion and attachment of impurities generated on the filtering assembly are avoided, and meanwhile the rectification reaction of internal n-heptane is promoted. Compared with the prior art, the problems that in the prior art, the energy utilization rate is low, and impurity adhesion is serious are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of n-heptane production equipment, and in particular to a high-purity n-heptane precision separation device. Background Technology

[0002] In existing n-heptane precision separation units, traditional distillation column structures are commonly used for separation operations. The internal structure of these columns is usually quite simple, relying mainly on temperature gradients and tray design to achieve component separation. However, in the preparation of high-purity n-heptane, problems such as uneven vapor flow within the column, low energy utilization, and easy deposition of impurities at the filter components frequently occur, leading to decreased distillation efficiency, unsatisfactory purity control, and high equipment cleaning and maintenance costs, thus limiting its application in high-end chemical products.

[0003] In the prior art, Chinese patent document CN215636057U, concerning a high-purity n-heptane precision separation device, proposes that a protective shell installed on the base can protect the internal n-heptane precision separation device. When the n-heptane precision separation device shakes horizontally, the connecting slide rod moves through the fixing ring, and the connecting slide rod extends and retracts through the connecting block to absorb the shaking. However, in practical applications, it mainly relies on the traditional distillation separation process, lacks full utilization of steam kinetic energy, has low overall energy efficiency, makes it difficult to achieve high-purity n-heptane precision separation, and is prone to impurity adhesion or clogging, affecting filtration efficiency. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a high-purity n-heptane precision separation device to solve the problems of low energy utilization and serious impurity adhesion in the existing technology.

[0005] To achieve the above objectives, this utility model provides a high-purity n-heptane precision separation device, including a distillation column, a moving component, and a filtration component;

[0006] The active components, located inside the distillation column, are used to utilize and transfer the kinetic energy of the vapor during the distillation process, and work with the filtration components to perform precise separation of n-heptane.

[0007] The filter assembly, located on one side of the moving assembly, is used to receive the kinetic energy of the moving assembly, prevent impurities from sticking and adhering to the filter assembly, and at the same time promote the distillation reaction of n-heptane inside.

[0008] Preferably, the movable component includes a central plate, which is fixedly installed on the inner wall of the distillation column. An inlet pipe is fixedly connected to the top of the central plate, and a reversing pipe is fixedly connected to the other end of the inlet pipe. Two connecting pipes are fixedly connected to the side of the reversing pipe away from the inlet pipe, and a reciprocating pipe is connected to the other end of the connecting pipe. A reversing valve is slidably installed inside the reversing pipe, and a reversing rod is fixedly connected to one side of the reversing valve. A reciprocating rod is slidably installed inside the reciprocating pipe, and multiple limiting blocks are fixedly installed on the reversing rod. Multiple swing plates are rotatably installed inside the distillation column, with one side of each swing plate located in the middle of two of the limiting blocks. An outlet pipe is fixedly connected to the reversing pipe at the middle position of the two connecting pipes, and the outlet pipe penetrates the interior of the distillation column and is fixedly connected to a transfer pipe.

[0009] Preferably, the filter assembly includes a connecting rod, one end of which is fixedly connected to the reciprocating rod, and a filter plate is fixedly installed at the other end of the connecting rod that passes through the concentrator plate. The filter plate is slidably installed on the inner wall of the distillation column.

[0010] Preferably, the other end of the transfer tube is fixedly connected to a condenser, a base is fixedly installed at the bottom of the distillation column and the condenser, a gas tank is fixedly installed on the base on one side of the distillation column, a receiving bucket is fixedly installed on the base on one side of the condenser, and multiple casters are fixedly installed at the bottom of the base.

[0011] Preferably, the diameter of the filter plate is the same as the inner diameter of the distillation column.

[0012] Preferably, the concentrator plate is an inverted funnel-shaped part, and the air inlet pipe is connected to the center of the funnel of the concentrator plate.

[0013] Preferably, a protrusion is provided on the side of the reciprocating rod near the swing plate, and the protrusion is in contact with one side of the swing plate.

[0014] Preferably, the reciprocating rod is provided with a piston head inside the reciprocating tube, and the piston head is in close contact with the inner wall of the reciprocating tube.

[0015] The beneficial effects of this utility model are:

[0016] 1. This high-purity n-heptane precision separation device, through the setting of a central plate, inlet pipe, reversing pipe and reversing valve, guides the steam in the tower to the power unit, drives the reversing valve to automatically switch the passage, and uses the piston structure in the reciprocating pipe to convert the steam kinetic energy into mechanical reciprocating power, realizing automatic reversing and continuous drive under the condition of no external energy. In this process, with the cooperation of multiple limit blocks and swing plates to form a reversing trigger mechanism, the system can achieve stable and efficient power switching and steam disturbance, improve the uniformity of steam flow and mass transfer efficiency inside the tower, and effectively enhance the separation effect of n-heptane from other components.

[0017] 2. This high-purity n-heptane precision separation device features a filter assembly rigidly connected to a reciprocating rod via a connecting rod. The filter plates slide synchronously along the inner wall of the column, achieving self-driven cleaning using the reciprocating power provided by the moving components. The filter plate diameter is precisely matched to the inner diameter of the column. During the sliding process, it not only blocks impurities from flowing down but also effectively disturbs adhering substances, preventing adhesion and scaling, forming a dynamic self-cleaning structure. This significantly reduces the frequency of manual cleaning, extends service life, and the continuous sliding of the filter plates also promotes more active vapor flow in this area, which is beneficial for improving the local gas-liquid contact efficiency in the rectification section, thereby enhancing product purity and system operational stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 3 This is a schematic diagram showing the location of some internal structural parts of this utility model;

[0022] Figure 4 This is a schematic diagram of the active component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the planar structure of the active component of this utility model.

[0024] The diagram is marked as follows:

[0025] 1. Distillation column; 2. Base; 3. Condenser; 4. Gas tank; 5. Transfer pipe; 6. Receiving container; 7. Central plate; 8. Filter plate; 9. Inlet pipe; 10. Reversing pipe; 11. Reversing rod; 12. Connecting rod; 13. Outlet pipe; 14. Reciprocating pipe; 15. Reciprocating rod; 16. Connecting pipe; 17. Swing plate; 18. Limit block; 19. Reversing valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 5 As shown, a high-purity n-heptane precision separation device includes a distillation column 1, a movable component and a filter component. The other end of the transfer pipe 5 is fixedly connected to a condenser 3. A base 2 is fixedly installed at the bottom of the distillation column 1 and the condenser 3. A gas tank 4 is fixedly installed on one side of the distillation column 1 on the base 2. A receiving bucket 6 is fixedly installed on one side of the condenser 3 on the base 2. Multiple casters are fixedly installed at the bottom of the base 2.

[0029] Furthermore, such as Figures 1 to 3As shown, the movable components, located inside the distillation column 1, are used to utilize and transfer the kinetic energy of the steam during the distillation process, and work with the filter components to precisely separate n-heptane. These components include a concentrator plate 7, which is fixedly installed on the inner wall of the distillation column 1. An inlet pipe 9 is fixedly connected to the top of the concentrator plate 7, and a reversing pipe 10 is fixedly connected to the other end of the inlet pipe 9. Two connecting pipes 16 are fixedly connected to the side of the reversing pipe 10 away from the inlet pipe 9, and the other ends of the connecting pipes 16 are connected to a reciprocating pipe 14. A reversing valve 19 is slidably installed inside the reversing pipe 10, and a reversing rod 11 is fixedly connected to one side of the reversing valve 19. A reciprocating rod 15 is slidably installed inside the reciprocating pipe 14, and multiple limit blocks 18 are fixedly installed on the reversing rod 11. The internal rotation of the distillation column 1... Multiple swing plates 17 are dynamically installed. One side of the swing plate 17 is located in the middle of two limiting blocks 18. A gas outlet pipe 13 is fixedly connected to the reversing pipe 10 at the middle position of two connecting pipes 16. The gas outlet pipe 13 passes through the interior of the distillation column 1 and is fixedly connected to a transfer pipe 5. The concentrating plate 7 is an inverted funnel-shaped part. The gas inlet pipe 9 is connected to the center of the funnel of the concentrating plate 7. A protrusion is provided on the side of the reciprocating rod 15 near the swing plate 17. The protrusion is in contact with one side of the swing plate 17. A piston head is provided inside the reciprocating pipe 14 of the reciprocating rod 15. The piston head is tightly fitted to the inner wall of the reciprocating pipe 14. After the steam is concentrated by the concentrating plate 7 (inverted funnel-shaped structure), it is introduced into the gas inlet pipe 9 from the center of the funnel and then enters the reversing pipe 10, which drives the internal reversing valve 19 to slide. The device achieves a reversing function without external power, enabling energy self-circulation and improving energy efficiency. The reversing valve 19 is fixedly connected to the reversing rod 11, which has multiple limit blocks 18. When the valve body moves to a certain position, the limit blocks are triggered, achieving reversal. After reversal, steam flows into the corresponding connecting pipe 16, driving the reciprocating rod 15 to slide within the reciprocating pipe 14. The inverted funnel structure of the concentrator plate 7 efficiently guides steam, reducing steam diffusion loss and improving the efficiency of entering the inlet pipe 9, ensuring a concentrated and stable gas source for the system. The reciprocating rod 15 has a piston head in the reciprocating pipe 14, which fits tightly against the inner wall to ensure complete steam pressure transmission for driving the action and reducing energy leakage. During operation, the distillation column 1 is first heated, with steam starting from the bottom of the distillation column 1. The steam moves upwards, is concentrated by the concentrator plate 7 (inverted funnel-shaped structure), and guided to the central outlet. Steam enters the system from the inlet pipe 9 and enters the reversing pipe 10. The reversing pipe 10 is equipped with a reversing valve 19, which can slide inside. The reversing valve 19 is connected to the external structure through the reversing rod 11. The reversing rod 11 is equipped with multiple limit blocks 18. When the valve body moves to the limit, it is blocked by the limit blocks, triggering the reversing and controlling the steam to be guided from the reversing pipe 10 to one of the left and right connecting pipes 16, realizing the flow direction switching. The steam enters the corresponding reciprocating pipe 14 through the currently open connecting pipe 16, pushing the reciprocating rod 15 to slide in the reciprocating pipe 14. As the reciprocating rod 15 moves back and forth, the protrusion and the swing plate 17 repeatedly contact each other, so that the reversing rod 11 and the reciprocating rod 15 are both in reciprocating motion.

[0030] Furthermore, such as Figures 2 to 3 As shown, the filter assembly, located on one side of the moving component, is used to receive the kinetic energy of the moving component, preventing impurities from sticking and adhering to the filter assembly, while promoting the internal distillation reaction of n-heptane. It includes a connecting rod 12, one end of which is fixedly connected to a reciprocating rod 15. A filter plate 8 is fixedly installed at the other end of the connecting rod 12, which passes through the concentrator plate 7. The filter plate 8 is slidably installed on the inner wall of the distillation column 1, and its diameter is the same as the inner diameter of the distillation column 1. The connecting rod 12 directly transmits the reciprocating motion of the reciprocating rod 15 to the filter plate 8, thus facilitating the filtration process. The filter plate 8 slides back and forth, fully utilizing the kinetic energy of the moving components without the need for an additional drive system. Sliding on the inner wall of the distillation column 1, the filter plate 8 forms a dynamic disturbance surface, effectively preventing impurities from adhering to or depositing on its surface, improving filtration efficiency, and extending service life. The sliding filter plate 8 promotes the flow and turbulence of vapor in this area, enhancing the contact between gas and liquid, which helps in the further separation and purification of n-heptane within this section of the column. The diameter of the filter plate 8 is consistent with the inner diameter of the distillation column 1, achieving precise fit, preventing impurities from leaking downwards, and reducing cleaning difficulty. The reciprocating rod 15... Driven by steam, the reciprocating tube 14 moves in a reciprocating motion. The connecting rod 12, fixedly connected to the reciprocating rod 15, moves synchronously back and forth. The connecting rod 12 passes through the central plate 7, transmitting power from the moving component to the filter assembly. A filter plate 8 is fixedly installed at the end of the connecting rod 12. As the connecting rod 12 reciprocates, the filter plate 8 slides axially along the inner wall of the distillation column 1. Because the diameter of the filter plate 8 is consistent with the inner diameter of the distillation column 1, it ensures that it remains tightly against the column wall during sliding, without any gaps or leaks. The sliding process continuously disturbs the surface of the filter, preventing impurities from accumulating, adhering, or... Scaling can be dislodged by the movement of the filter plate itself, forming a dynamic cleaning mechanism that extends the service life of the filter plate. The movement of the filter plate 8 disturbs the steam flow and increases the micro-turbulence in the tower, which is conducive to promoting the contact between steam and liquid and effectively improving the distillation separation efficiency of n-heptane in this area of ​​the tower. At the same time, the filtration effect blocks impurities or liquid droplets entrained in the separation, improving the purity of the downstream product. As the moving components continue to change direction and drive reciprocating motion, the filter components also continue to slide back and forth. The entire process is passively driven, requiring no separate power system, which is energy-saving and has a compact structure.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0032] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-purity n-heptane precision separation device, characterized in that, include: Distillation column (1), moving parts and filter components; An active component, located inside the distillation column (1), is used to utilize and transfer the kinetic energy of the steam during the distillation process, and works in conjunction with a filter assembly to precisely separate n-heptane. The active component includes a concentrator plate (7), which is fixedly installed on the inner wall of the distillation column (1). An inlet pipe (9) is fixedly connected above the concentrator plate (7), and a reversing pipe (10) is fixedly connected to the other end of the inlet pipe (9). Two connecting pipes (16) are fixedly connected to the side of the reversing pipe (10) away from the inlet pipe (9). The other end of the connecting pipes (16) is connected to a reciprocating pipe (14). The reversing pipe (10)... A reversing valve (19) is slidably installed inside the distillation column (1). A reversing rod (11) is fixedly connected to one side of the reversing valve (19). A reciprocating rod (15) is slidably installed inside the reciprocating pipe (14). Multiple limiting blocks (18) are fixedly installed on the reversing rod (11). Multiple swing plates (17) are rotatably installed inside the distillation column (1). One side of the swing plate (17) is located in the middle of the two limiting blocks (18). An outlet pipe (13) is fixedly connected to the reversing pipe (10) at the middle position of the two connecting pipes (16). The outlet pipe (13) passes through the inside of the distillation column (1) and is fixedly connected to a transfer pipe (5). The filter assembly, located on one side of the moving assembly, is used to receive the kinetic energy of the moving assembly, prevent impurities from sticking and adhering to the filter assembly, and at the same time promote the distillation reaction of n-heptane inside.

2. The high-purity n-heptane precision separation device according to claim 1, characterized in that, Includes a connecting rod (12), one end of which is fixedly connected to the reciprocating rod (15), and a filter plate (8) is fixedly installed at the other end of the connecting rod (12) through the concentrator plate (7), and the filter plate (8) is slidably installed on the inner wall of the distillation column (1).

3. The high-purity n-heptane precision separation device according to claim 2, characterized in that, The other end of the transfer pipe (5) is fixedly connected to a condenser (3). A base (2) is fixedly installed at the bottom of the distillation column (1) and the condenser (3). A gas tank (4) is fixedly installed on the base (2) on one side of the distillation column (1). A receiving bucket (6) is fixedly installed on the base (2) on one side of the condenser (3). Multiple casters are fixedly installed at the bottom of the base (2).

4. The high-purity n-heptane precision separation device according to claim 2, characterized in that, The diameter of the filter plate (8) is the same as the inner diameter of the distillation column (1).

5. The high-purity n-heptane precision separation device according to claim 2, characterized in that, The concentrator plate (7) is an inverted funnel-shaped part, and the air inlet pipe (9) is connected to the center of the funnel of the concentrator plate (7).

6. The high-purity n-heptane precision separation device according to claim 2, characterized in that, The reciprocating rod (15) has a protrusion on the side near the swing plate (17), and the protrusion is in contact with one side of the swing plate (17).

7. The high-purity n-heptane precision separation device according to claim 2, characterized in that, The reciprocating rod (15) is located inside the reciprocating tube (14) and has a piston head that fits tightly against the inner wall of the reciprocating tube (14).

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