A precision rectifying column for purifying lactones

Abstract

The utility model discloses a kind of for purifying lactone's precision rectifying column, it is related to lactone rectifying column technical field, including tower body, support seat and first bevel gear structure;The inside of the tower body is equipped with several inclined trays;The support seat movably is equipped with the cleaning scraping piece that is used for cleaning inclined tray;The first bevel gear structure is rotated by mounting block control cleaning scraping piece, and inclined tray is cleaned;Tower body and inclined tray are set, so that material leaves inclined tray under the action of gravity, reduce the liquid layer thickness of material, shorten the residence time of material on inclined tray, avoid its deterioration in rectification process, finally guarantee product purity and yield, by the cooperation of support seat, support block, connecting rod, transmission rod, driving motor, main gear, transmission gear, rotating rod, first bevel gear structure and cleaning scraping piece, cleaning inclined tray, avoid material and impurities and block inclined tray.

Description

Technical Field

[0001] This invention belongs to the technical field of lactone distillation column, specifically a precision distillation column for purifying lactones. Background Technology

[0002] Lactones are essentially cyclic ester compounds, classified into two categories: naturally extracted and artificially synthesized. Natural lactones are mostly found in plant and microbial metabolites; industrially, they are mainly synthesized through intramolecular dehydration of carboxylic acids or hydroxy acids, and reactions of epoxides with carbon dioxide. A precision distillation column is a special distillation device that achieves efficient and high-purity separation of components in a mixture through refined design and control, and is primarily used to purify substances requiring extremely high separation precision. The purification of lactones requires consideration of their thermosensitive and easily polymerizable characteristics, and typically employs a combination of pretreatment, core distillation, and post-treatment processes. Therefore, a precision distillation column is needed for the purification of lactones.

[0003] In existing precision distillation columns for purifying lactones, several trays are typically horizontally arranged inside the column. This increases the probability of material retention and impurity accumulation. Furthermore, most lactones are prone to ring-opening polymerization under the heating environment of horizontal trays. With prolonged residence time, they gradually form dimers, trimers, and even polymers. These polymers are usually high-boiling-point, high-viscosity viscous substances that adhere to the surface of the horizontal trays. Moreover, the cyclic ester groups of lactones have limited stability and easily decompose at high temperatures to form carboxylic acids, alcohols, or olefins. Some of these decomposition products may further react, forming solid residues or high-boiling-point viscous substances. These substances cannot be discharged with the gas-liquid flow and will deposit in the dead corners of the trays and the edges of the sieve holes, gradually causing blockages. This necessitates the shutdown and disassembly of the precision distillation column for maintenance, reducing the purification efficiency and increasing the workload of the workers, failing to meet the required standards. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a precision distillation column for purifying lactones.

[0005] A precision distillation column for purifying lactones includes a column body, a support base, and a first bevel gear structure. The tower body has several tilted tower plates arranged in a staggered manner inside; The support base is arranged parallel to the lower side of the inclined tower plate, and is movably equipped with a cleaning scraper for unclogging the inclined tower plate. The first bevel gear structure is rotatably mounted in the support base and the rotation of the cleaning scraper is controlled by the mounting block to clean the tilted tower plate.

[0006] The tilt angle of the tilted tower plate is set to 5°-15°; The upper surface of the inclined tower plate is provided with a smooth surface; The inclined tower plate has several sieve holes.

[0007] As a further embodiment of this utility model: the support base is provided with a rotating rod that is coaxially connected to the first bevel gear structure; One end of the rotating rod is provided with a connecting rod extending out of the tower body, and the connecting rod, the rotating rod and the first bevel gear structure are all arranged parallel to the support base.

[0008] As a further embodiment of this utility model: one end of the connecting rod is provided with a second bevel gear structure; The two adjacent second bevel gear structures on the same side are each provided with parallel transmission rods, and the angle between the transmission rods and the inclined tower plate is set as a vertical angle.

[0009] As a further embodiment of this utility model: a transmission gear is provided at the end of the transmission rod away from the second bevel gear structure; The two transmission gears simultaneously mesh with the main gear; When the main gear controls the transmission gear to rotate, the transmission rod controls the rotation of the cleaning scraper through the connecting rod, rotating rod and the first bevel gear structure to clean the inclined tower plate.

[0010] As a further embodiment of this utility model: the outer side of the tower body is provided with several protective boxes to protect the second bevel gear structure, the main gear and the transmission gear; The protective box is equipped with a drive motor that controls the rotation of the main gear.

[0011] As a further embodiment of this utility model: the protective box is provided with an inclined support block for rotating the main gear and the transmission gear; The tilt angle of the support block is the same as the tilt angle of the tilted tower plate.

[0012] As a further embodiment of this utility model: an air inlet pipe and a feed pipe are provided on the outer side of the tower body; The bottom end of the tower body is provided with a discharge pipe; The top of the tower is equipped with an air outlet pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model, through the setting of tower body, air inlet pipe, feed pipe, discharge pipe, air outlet pipe and inclined tower plate, enables the material to leave the inclined tower plate under the action of gravity, reduces the liquid layer thickness of the material, shortens the residence time of the material on the inclined tower plate, avoids the chemical defects of the lactone itself, avoids its deterioration during the distillation process, and ultimately ensures the purity and yield of the product. Through the use of the setting of support base, support block, connecting rod, transmission rod, drive motor, main gear, transmission gear, rotating rod, first bevel gear structure, mounting block and cleaning scraper, the inclined tower plate can be cleaned, avoiding the material and impurities from clogging the inclined tower plate, extending the service life of the inclined tower plate, eliminating the need to shut down the precision distillation tower for disassembly and maintenance, reducing the labor drive of the staff, and improving the purification effect and use effect of the precision distillation tower. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention.

[0015] Figure 2 This is a cross-sectional view of the tower body and the inclined tower plate in this utility model.

[0016] Figure 3 This is a partial structural diagram of the inclined tower plate and the second bevel gear structure in this utility model.

[0017] Figure 4 In this utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0018] Figure 5 This is a partial structural diagram of the inclined tower plate and cleaning scraper in this utility model.

[0019] In the diagram: 1. Tower body; 2. Air inlet pipe; 3. Feed pipe; 4. Discharge pipe; 5. Air outlet pipe; 6. Protective box; 7. Inclined tower plate; 8. Support base; 9. Second bevel gear structure; 10. Connecting rod; 11. Transmission rod; 12. Drive motor; 13. Main gear; 14. Transmission gear; 15. Rotating rod; 16. First bevel gear structure; 17. Mounting block; 18. Cleaning scraper; 19. Support block. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] Example 1 Please see Figure 1 - Figure 5This application provides a precision distillation column for purifying lactones, including a column body 1, a support base 8, and a first bevel gear structure 16; the column body 1 has several tilted trays 7 staggered inside; the support base 8 is arranged parallel to the lower side of the tilted trays 7 and is movably equipped with a cleaning scraper 18 for unclogging the tilted trays 7; the first bevel gear structure 16 is rotatably arranged in the support base 8 and the cleaning scraper 18 is controlled to rotate by the mounting block 17 to clean the lower side of the tilted trays 7.

[0022] In this embodiment, the tower body 1 and several inclined tower plates 7 are used together to purify lactone. Every certain period, the first bevel gear structure 16 is controlled to rotate, so that the first bevel gear structure 16 drives the mounting block 17 to rotate, so that the mounting block 17 drives the cleaning scraper 18 to rotate, and cleans the material adhering to the inclined tower plate 7.

[0023] In this invention, the tilt angle of the inclined tray 7 is set to 5°-15°; the inclined tray 7 utilizes gravity to accelerate material flow, reducing the long-term residence of material on the inclined tray 7 and avoiding local overheating and polymerization; the upper surface of the inclined tray 7 is provided with a smooth surface; several sieve holes are opened on the inclined tray 7; the inclined tray 7 is polished stainless steel or lined with polytetrafluoroethylene to reduce material adhesion; the inclined tray 7 adopts an arc transition to avoid material accumulation; the inclined tray 7 reduces the liquid layer thickness of the material, shortens the residence time of the material on the inclined tray 7, avoids the chemical defects of the lactone itself, avoids its deterioration during the distillation process, and ultimately ensures product purity and yield.

[0024] In this utility model, the support base 8 is provided with a rotating rod 15 coaxially connected to the first bevel gear structure 16; one end of the rotating rod 15 is provided with a connecting rod 10 extending out of the tower body 1, and the connecting rod 10, the rotating rod 15 and the first bevel gear structure 16 are all arranged parallel to the support base 8.

[0025] In this embodiment, when the connecting rod 10 rotates, it causes the rotating rod 15 to rotate, which in turn causes the first bevel gear structure 16 to rotate.

[0026] In this utility model, one end of the connecting rod 10 is provided with a second bevel gear structure 9; two adjacent second bevel gear structures 9 on the same side are each provided with a transmission rod 11 that is parallel to each other, and the included angle between the transmission rod 11 and the inclined tower plate 7 is set as a vertical angle.

[0027] In this embodiment, when the transmission rod 11 rotates, it drives the second bevel gear structure 9 to rotate, which in turn drives the connecting rod 10 to rotate.

[0028] In this utility model, a transmission gear 14 is provided at the end of the transmission rod 11 away from the second bevel gear structure 9; the two transmission gears 14 mesh with the main gear 13 at the same time; when the main gear 13 controls the transmission gear 14 to rotate, the transmission rod 11 controls the cleaning scraper 18 to rotate through the connecting rod 10, the rotating rod 15 and the first bevel gear structure 16, so as to clean the inclined tower plate 7.

[0029] In this embodiment, when the main gear 13 rotates, it drives the transmission gear 14 to rotate, which in turn drives the transmission rod 11 to rotate. The transmission rod 11 drives the second bevel gear structure 9 to rotate, which in turn drives the connecting rod 10 to rotate. The connecting rod 10 drives the rotating rod 15 to rotate, which in turn drives the first bevel gear structure 16 to rotate. The first bevel gear structure 16 drives the mounting block 17 to rotate, which in turn drives the cleaning scraper 18 to rotate.

[0030] In this utility model, the outer side of the tower body 1 is provided with several protective boxes 6 to protect the second bevel gear structure 9, the main gear 13 and the transmission gear 14; the protective box 6 is provided with a drive motor 12 to control the rotation of the main gear 13.

[0031] In this embodiment, when the drive motor 12 starts, it drives the main gear 13 to rotate, which in turn drives the transmission gear 14 to rotate.

[0032] In this utility model, the protective box 6 is inclined with a support block 19 that provides rotational support for the main gear 13 and the transmission gear 14; the inclination angle of the support block 19 is the same as the inclination angle of the inclined tower plate 7.

[0033] In this utility model, the outer side of the tower body 1 is provided with an air inlet pipe 2 and a feed pipe 3; the bottom end of the tower body 1 is provided with a discharge pipe 4; and the top end of the tower body 1 is provided with an air outlet pipe 5.

[0034] Example 2 This is the second embodiment of the present invention. In this invention, a precision distillation column for purifying lactones includes a column body 1, a support base 8, and a first bevel gear structure 16. Several inclined plates 7 are staggered inside the column body 1 and are arranged parallel to each other on the upper side of the inclined plates 7. A rotating rod 15 and a first bevel gear structure 16 coaxially connected to the rotating rod 15 are movably arranged inside the support base 8. A mounting block 17 is coaxially arranged on the first bevel gear structure 16. A cleaning scraper 18 for cleaning the upper side of the inclined plates 7 is provided on the mounting block 17.

[0035] In this invention, the tilt angle of the inclined tray 7 is set to 5°-15°; the inclined tray 7 utilizes gravity to accelerate material flow, reducing the long-term residence of material on the inclined tray 7 and avoiding local overheating and polymerization; the upper surface of the inclined tray 7 is provided with a smooth surface; several sieve holes are opened on the inclined tray 7; the inclined tray 7 is polished stainless steel or lined with polytetrafluoroethylene to reduce material adhesion; the inclined tray 7 adopts an arc transition to avoid material accumulation; the inclined tray 7 reduces the liquid layer thickness of the material, shortens the residence time of the material on the inclined tray 7, avoids the chemical defects of the lactone itself, avoids its deterioration during the distillation process, and ultimately ensures product purity and yield.

[0036] In this utility model, the support base 8 is provided with a rotating rod 15 coaxially connected to the first bevel gear structure 16; one end of the rotating rod 15 is provided with a connecting rod 10 extending out of the tower body 1, and the connecting rod 10, the rotating rod 15 and the first bevel gear structure 16 are all arranged parallel to the support base 8.

[0037] In this embodiment, when the connecting rod 10 rotates, it causes the rotating rod 15 to rotate, which in turn causes the first bevel gear structure 16 to rotate.

[0038] In this utility model, one end of the connecting rod 10 is provided with a second bevel gear structure 9; two adjacent second bevel gear structures 9 on the same side are each provided with a transmission rod 11 that is parallel to each other, and the included angle between the transmission rod 11 and the inclined tower plate 7 is set as a vertical angle.

[0039] In this embodiment, when the transmission rod 11 rotates, it drives the second bevel gear structure 9 to rotate, which in turn drives the connecting rod 10 to rotate.

[0040] In this utility model, a transmission gear 14 is provided at the end of the transmission rod 11 away from the second bevel gear structure 9; the two transmission gears 14 mesh with the main gear 13 at the same time; when the main gear 13 controls the transmission gear 14 to rotate, the transmission rod 11 controls the cleaning scraper 18 to rotate through the connecting rod 10, the rotating rod 15 and the first bevel gear structure 16, so as to clean the inclined tower plate 7.

[0041] In this embodiment, when the main gear 13 rotates, it drives the transmission gear 14 to rotate, which in turn drives the transmission rod 11 to rotate. The transmission rod 11 drives the second bevel gear structure 9 to rotate, which in turn drives the connecting rod 10 to rotate. The connecting rod 10 drives the rotating rod 15 to rotate, which in turn drives the first bevel gear structure 16 to rotate. The first bevel gear structure 16 drives the mounting block 17 to rotate, which in turn drives the cleaning scraper 18 to rotate.

[0042] In this utility model, the outer side of the tower body 1 is provided with several protective boxes 6 to protect the second bevel gear structure 9, the main gear 13 and the transmission gear 14; the protective box 6 is provided with a drive motor 12 to control the rotation of the main gear 13.

[0043] In this embodiment, when the drive motor 12 starts, it drives the main gear 13 to rotate, which in turn drives the transmission gear 14 to rotate.

[0044] In this utility model, the protective box 6 is inclined with a support block 19 that provides rotational support for the main gear 13 and the transmission gear 14; the inclination angle of the support block 19 is the same as the inclination angle of the inclined tower plate 7.

[0045] In this utility model, the outer side of the tower body 1 is provided with an air inlet pipe 2 and a feed pipe 3; the bottom end of the tower body 1 is provided with a discharge pipe 4; and the top end of the tower body 1 is provided with an air outlet pipe 5.

[0046] Example 3 This is the third embodiment of the present invention. A precision distillation column for purifying lactones includes a column body 1, a support base 8, and a first bevel gear structure 16. The column body 1 has several staggered inclined plates 7 disposed inside. The support base 8 is parallel to the lower side or upper side of the inclined plates 7 and is movably equipped with a cleaning scraper 18 for unclogging the inclined plates 7. The first bevel gear structure 16 is rotatably disposed in the support base 8, and the cleaning scraper 18 is controlled to rotate via a mounting block 17 to clean the lower or upper side of the inclined plates 7.

[0047] In this invention, the tilt angle of the inclined tray 7 is set to 5°-15°; the inclined tray 7 utilizes gravity to accelerate material flow, reducing the long-term residence of material on the inclined tray 7 and avoiding local overheating and polymerization; the upper surface of the inclined tray 7 is provided with a smooth surface; several sieve holes are opened on the inclined tray 7; the inclined tray 7 is polished stainless steel or lined with polytetrafluoroethylene to reduce material adhesion; the inclined tray 7 adopts an arc transition to avoid material accumulation; the inclined tray 7 reduces the liquid layer thickness of the material, shortens the residence time of the material on the inclined tray 7, avoids the chemical defects of the lactone itself, avoids its deterioration during the distillation process, and ultimately ensures product purity and yield.

[0048] In this utility model, the support base 8 is provided with a rotating rod 15 coaxially connected to the first bevel gear structure 16; one end of the rotating rod 15 is provided with a connecting rod 10 extending out of the tower body 1, and one end of the connecting rod 10 is provided with a drive motor 12, which is inclinedly arranged on the outside of the tower body 1.

[0049] In this embodiment, the drive motor 12 is started, which drives the connecting rod 10 to rotate, causing the connecting rod 10 to drive the rotating rod 15 to rotate, causing the rotating rod 15 to drive the first bevel gear structure 16 to rotate, causing the first bevel gear structure 16 to drive the mounting block 17 to rotate, causing the mounting block 17 to drive the cleaning scraper 18 to rotate, so that the cleaning scraper 18 cleans the lower side or the upper side of the inclined tower plate 7.

[0050] In this utility model, the outer side of the tower body 1 is provided with an air inlet pipe 2 and a feed pipe 3; the bottom end of the tower body 1 is provided with a discharge pipe 4; and the top end of the tower body 1 is provided with an air outlet pipe 5.

[0051] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A precision distillation column for purifying lactones, characterized in that, include: The tower body (1) has several tilted tower plates (7) staggered inside. The support base (8) is arranged parallel to the lower side of the inclined tower plate (7) and is equipped with a cleaning scraper (18) for clearing blockages from the inclined tower plate (7). The first bevel gear structure (16) is rotatably set in the support base (8) and the cleaning scraper (18) is controlled to rotate by the mounting block (17) to clean the inclined tower plate (7).

2. A precision distillation column for purifying lactones according to claim 1, characterized in that, The tilt angle of the tilted tower plate (7) is set to 5°-15°; The upper surface of the inclined tower plate (7) is provided with a smooth surface; The inclined tower plate (7) has several sieve holes.

3. A precision distillation column for purifying lactones according to claim 1, characterized in that, The support base (8) is provided with a rotating rod (15) that is coaxially connected to the first bevel gear structure (16). One end of the rotating rod (15) is provided with a connecting rod (10) extending out of the tower body (1).

4. A precision distillation column for purifying lactones according to claim 3, characterized in that, One end of the connecting rod (10) is provided with a second bevel gear structure (9); The two adjacent second bevel gear structures (9) on the same side are each provided with a transmission rod (11) that is parallel to each other.

5. A precision distillation column for purifying lactones according to claim 4, characterized in that, The transmission rod (11) has a transmission gear (14) at the end away from the second bevel gear structure (9). The two transmission gears (14) simultaneously mesh with the main gear (13). When the main gear (13) controls the transmission gear (14) to rotate, the transmission rod (11) controls the cleaning scraper (18) to rotate through the connecting rod (10), the rotating rod (15) and the first bevel gear structure (16) to clean the inclined tower plate (7).

6. A precision distillation column for purifying lactones according to claim 5, characterized in that, The outer side of the tower body (1) is provided with several protective boxes (6) to protect the second bevel gear structure (9), the main gear (13) and the transmission gear (14). The protective box (6) is equipped with a drive motor (12) that controls the rotation of the main gear (13).

7. A precision distillation column for purifying lactones according to claim 6, characterized in that, The protective box (6) is inclinedly provided with a support block (19) that provides rotational support for the main gear (13) and the transmission gear (14). The tilt angle of the support block (19) is the same as the tilt angle of the tilted tower plate (7).

8. A precision distillation column for purifying lactones according to claim 1, characterized in that, The outer side of the tower body (1) is provided with an air inlet pipe (2) and a feed pipe (3); The bottom end of the tower body (1) is provided with a discharge pipe (4). The top of the tower body (1) is provided with an air outlet pipe (5).

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