Recyclable enzymic catalytic ethyl lactate fixed bed reactor

Abstract

The utility model belongs to the technical field of chemical production, and particularly relates to a recyclable enzymic method catalytic ethyl lactate fixed bed reactor which comprises an outer box body, inner box bodies, an upper sealing block, an access pipe and a discharge pipe, a lower sealing block is arranged below the upper sealing block, and the inner walls of the two inner box bodies are respectively connected with an upper sliding plate and a lower sliding plate in a sliding mode. The upper sliding plate and the lower sliding plate are provided with receding holes matched with the upper sealing block and the lower sealing block, and an inner connecting ring is installed on the inner box body. When the fixed bed is replaced, the catalytic operation of ethyl lactate does not need to be interrupted, and when the fixed bed between the outer box body and the inner box body needs to be replaced, the sealing column seals the sealing hole under the pushing of the fixing ring, the rotating sleeve is rotated to block the material flow direction, and the lower threaded ring can be separated for replacement; when the fixed bed in the inner box body is replaced, the upper sliding plate and the lower sliding plate are pushed to separate the inner cavity of the inner box body, the rotating sleeve is rotated to isolate the cavity, and the connecting rod and the lower sliding plate are separated.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production technology, specifically relating to a recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate. Background Technology

[0002] Ethyl lactate, as an important organic compound, is widely used in the food, fragrance, coating, and ink industries. Its production process has attracted much attention. Fixed-bed reactors, due to their ability to provide a large specific surface area, allow the substrate and enzyme to fully contact each other, which is beneficial to improving the reaction rate. They have been applied to some extent in the enzymatic catalysis of ethyl lactate.

[0003] However, existing fixed-bed reactors for enzymatic catalysis of ethyl lactate still have many shortcomings. On the one hand, during the operation of the fixed-bed reactor, the enzyme will inevitably experience a decrease in activity and loss. When it is necessary to replace the enzyme carrier in the fixed bed to maintain the reaction efficiency, it is often necessary to interrupt the entire production process, stop the reactor, and then disassemble and replace it. This not only leads to a significant reduction in production efficiency, but also increases production costs. Utility Model Content

[0004] This invention provides a recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate, which solves the problem that often requires interrupting the entire production process when the enzyme carrier in the fixed bed needs to be replaced to maintain reaction efficiency.

[0005] This utility model provides the following technical solution: It includes an outer casing, an inner casing, an upper sealing block, an inlet pipe, and a outlet pipe. A lower sealing block is installed below the upper sealing block. An upper sliding plate and a lower sliding plate are slidably connected to the inner walls of the two inner casings, respectively. The upper sliding plate and the lower sliding plate have clearance holes matching the upper and lower sealing blocks. An outer connecting ring is installed on the inner wall of the outer casing. An inner connecting ring is installed on the inner casing. A rotating sleeve is slidably connected to the inner wall of the inner connecting ring. The inner connecting ring and the rotating sleeve have communicating docking holes. A lower threaded ring is threadedly connected between the outer casing and the inner casing. An upper threaded ring is threadedly connected between the outer connecting ring and the inner connecting ring. An installation ring is installed between the outer casing and the inner casing. A sealing hole is opened on the installation ring. A lower threaded ring and an upper threaded ring are slidably connected between the outer connecting ring and the inner connecting ring. A sealing post is slidably connected to the inner wall of the sealing hole.

[0006] The upper sealing block is connected to the inner box via a frame rod, the upper sealing block and the lower sealing block are connected via a vertical rod, the upper sliding plate and the lower sliding plate are respectively attached to the upper sealing block and the vertical rod, and the upper sliding plate and the lower sliding plate are connected via a connecting rod.

[0007] The lower threaded ring and the upper threaded ring are connected by a fixing rod, and the upper sealing block and the lower sealing block are connected by a vertical rod.

[0008] The outer casing is equipped with a fixing ring, which is connected to the bottom end of the sealing column.

[0009] The bottom of the outer casing is slidably connected to a sliding rod, and the bottom end of the sliding rod is connected to a push ring.

[0010] The outer casing has a bottom plate threadedly connected to it, which corresponds to the inner casing. The bottom plate is connected to the lower slide plate by a bottom rod.

[0011] The beneficial effects of this utility model are: when replacing the fixed bed, there is no need to interrupt the catalytic operation of ethyl lactate. When it is necessary to replace the fixed bed between the outer and inner boxes, the sealing column is used to seal the hole under the push of the fixed ring, and the rotating sleeve is rotated to block the material flow, so that the lower threaded ring can be separated for replacement. When replacing the fixed bed in the inner box, the upper and lower sliding plates are pushed to separate the inner cavity of the inner box, the rotating sleeve is rotated to isolate the cavity, and the connecting rod is separated from the lower sliding plate to complete the replacement. This greatly improves maintenance efficiency, reduces downtime, and ensures the continuity of production.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic cross-sectional view of the outer casing of this utility model;

[0015] Figure 3 This is a schematic diagram showing the movement of the lower threaded ring and the upper threaded ring in this utility model;

[0016] Figure 4 This is a schematic diagram illustrating the movement of the upper and lower sliding plates in this utility model.

[0017] In the diagram: 1. Outer casing; 11. Inner casing; 12. Upper sealing block; 13. Frame rod; 14. Upright rod; 15. Lower sealing block; 2. Upper sliding plate; 21. Lower sliding plate; 211. Base plate; 212. Base rod; 22. Connecting rod; 23. Clearance hole; 24. Outer connecting ring; 25. Inner connecting ring; 26. Rotating sleeve; 27. Butt joint hole; 3. Mounting ring; 31. Lower threaded ring; 32. Upper threaded ring; 33. Fixing rod; 34. Sealing hole; 35. Fixing ring; 36. Sealing column; 37. Push ring; 38. Sliding rod; 4. Inlet pipe; 41. Discharge pipe. Detailed Implementation

[0018] Please see Figures 1-4 This utility model provides the following technical solution: It includes an outer casing 1, an inner casing 11, an upper sealing block 12, an inlet pipe 4, and a outlet pipe 41. A lower sealing block 15 is installed below the upper sealing block 12. Upper sliding plates 2 and lower sliding plates 21 are slidably connected to the inner walls of the two inner casings 11, respectively. The upper sliding plates 2 and lower sliding plates 21 have clearance holes 23 that match the upper sealing block 12 and lower sealing block 15. An outer connecting ring 24 is installed on the inner wall of the outer casing 1, and an inner connecting ring 25 is installed on the inner casing 11. The inner wall of the inner connecting ring 25 is slidably connected... A rotating sleeve 26 is connected. The inner connecting ring 25 and the rotating sleeve 26 have a connecting hole 27. A lower threaded ring 31 is threaded between the outer box 1 and the inner box 11. An upper threaded ring 32 is threaded between the outer connecting ring 24 and the inner connecting ring 25. An installation ring 3 is installed between the outer box 1 and the inner box 11. A sealing hole 34 is opened on the installation ring 3. The lower threaded ring 31 and the upper threaded ring 32 are slidably connected between the outer connecting ring 24 and the inner connecting ring 25. A sealing post 36 is slidably connected to the inner wall of the sealing hole 34.

[0019] In this embodiment: the outer casing 1 serves as the carrier of the supporting device. The inner casing 11 installed inside the outer casing 1 allows the upper sliding plate 2 and lower sliding plate 21, which are slidably connected to the inner wall of the inner casing 11, to form a closed cavity within the outer casing 1. Furthermore, the upper sliding plate 2 and lower sliding plate 21 can slide to offset themselves from the upper sealing block 12 and lower sealing block 15 installed on the inner wall of the inner casing 11. The upper sliding plate 2 and the lower sliding plate 21 are designed to communicate with the inner cavity of the inner housing 11 and the inner cavity of the outer housing 1. The mounting ring 3 and the lower threaded ring 31, which are slidably connected to the inner walls of the outer housing 1 and the inner housing 11, can be sealed between the outer connecting ring 24 and the inner connecting ring 25 through the sealing hole 34 on the mounting ring 3. Ethyl lactate can then enter the cavity between the inner connecting ring 25 and the rotating sleeve 26 installed on the inner housing 11 through the inlet pipe 4. Afterwards, it enters the cavity between the outer housing 1 and the inner housing 11 through the docking hole 27. This, combined with the sealing hole 34 on the mounting ring 3, allows the various cavities within the outer housing 1 to communicate. The fixed-bed reactor maintains connectivity, allowing ethyl lactate to contact the fixed bed installed in the cavity above the mounting ring 3 between the outer casing 1 and the inner casing 11. The enzyme is immobilized onto the carrier, reducing enzyme loss and denaturation during the reaction, improving enzyme stability and lifespan, and lowering production costs. The fixed-bed reactor provides a large specific surface area, ensuring sufficient contact between the ethyl lactate substrate and the enzyme, which is beneficial for improving reaction rate and catalytic efficiency. Simultaneously, the circulation system allows the material to pass through the fixed bed multiple times, further improving the reaction conversion rate. Under prolonged catalytic reaction of ethyl lactate, the enzyme production... When the fixed bed between the outer housing 1 and the inner housing 11 needs to be replaced after the loss of the seal, the sealing post 36 can be pushed upward by the fixing ring 35, so that it is supported and sealed on the inner wall of the sealing hole 34. At this time, the mating holes 27 on the lower inner connecting ring 25 and the rotating sleeve 26 are aligned. Then, the upper rotating sleeve 26 is rotated, so that the mating holes 27 on the inner connecting ring 25 and the rotating sleeve 26 are misaligned. At this time, the connecting pipe 4 enters into the inner connecting ring 25 and the rotating sleeve 26, and is guided to the bottom of the outer housing 1 through the inner housing 11, so that it is discharged through the discharge pipe 41. At this time, the lower threaded ring 31 can be separated, and the fixed bed between the outer housing 1 and the inner housing 11 is removed. The replacement can be performed without affecting the catalytic reaction of ethyl lactate by the fixed bed installed inside the inner chamber 11. After replacing the fixed bed, all components are reset and the chamber can be put back into use. When it is necessary to replace the fixed bed inside the inner chamber 11 again, the upper slide plate 2 and the lower slide plate 21 can be pushed upwards to connect with the frame rod 13 and the lower sealing block 15, thus separating the inner cavity of the inner chamber 11. At the same time, the lower rotating sleeve 26 rotates, causing the mating hole 27 on the rotating sleeve 26 to misalign with the mating hole 27 on the inner connecting ring 25, thus isolating the inner cavity of the inner chamber 11 from the outer chamber 1 and the cavity between the inner and outer chambers 11.At this point, one end of the connecting rod 22 can be separated from the lower slide plate 21, allowing the fixed bed installed inside the inner casing 11 to be disassembled and replaced. After replacement, all components are reset, enabling each fixed bed to operate simultaneously. This allows the device to continuously catalyze ethyl lactate, and simultaneously replace the fixed bed while the catalytic operation is uninterrupted, ensuring that ethyl lactate is catalyzed by the enzyme.

[0020] The upper sealing block 12 is connected to the inner box 11 by a support rod 13, and the upper sealing block 12 and the lower sealing block 15 are connected by a vertical rod 14. The upper sliding plate 2 and the lower sliding plate 21 are respectively attached to the upper sealing block 12 and the vertical rod 14, and the upper sliding plate 2 and the lower sliding plate 21 are connected by a connecting rod 22. The upper sealing block 12 is fixed at the center of the top of the inner box 11 by the support rod 13, and the lower sealing block 15 is connected and fixed to the upper sealing block 12 by the vertical rod 14, so that the positions of the upper sealing block 12 and the lower sealing block 15 can be kept in correspondence, so that they can seal the upper sliding plate 2 and the lower sliding plate 21. One end of the connecting rod 22 is fixed to the upper sliding plate 2, and the other end is detachably connected to the lower sliding plate 21, so that the upper sliding plate 2 and the lower sliding plate 21 can be adjusted synchronously, and the connecting rod 22 and the lower sliding plate 21 can be connected and separated, so that the lower sliding plate 21 can be separated independently, so that the fixed bed in the inner cavity of the inner box 11 can be replaced and removed after the lower sliding plate 21 is separated.

[0021] The lower threaded ring 31 and the upper threaded ring 32 are connected by a fixing rod 33, and the upper sealing block 12 and the lower sealing block 15 are connected by a vertical rod 14. The lower threaded ring 31 and the upper threaded ring 32 are connected by a fixing rod 33, so that the lower threaded ring 31 and the upper threaded ring 32 can maintain synchronous displacement and rotation, so that the lower threaded ring 31 can be connected to the inner wall of the top of the outer housing 1, so that it can be sealed between the inner connecting ring 25 and the lower threaded ring 31, and the upper threaded ring 32 can rotate to the space between the inner connecting ring 25 and the outer housing 1. At this time, the lower threaded ring 31 can be sealed on the outer wall of the top of the inner housing 11, so that the device can allow ethyl lactate entering through the inlet pipe 4 to flow through the inner cavity of the outer housing 1, so that the device can be used to select the fixed bed installed between the outer housing 1 and the inner housing 11.

[0022] The outer casing 1 is provided with a fixing ring 35, which is connected to the bottom end of the sealing post 36. The fixing ring 35 provided in the outer casing 1 is connected to the bottom of the sealing post 36, so that the device can adjust the position of the fixing ring 35 so that the sealing post 36 can be connected and sealed with the sealing hole 34, and the sealing post 36 can be misaligned with the sealing hole 34 so that ethyl lactate can enter the bottom of the inner cavity of the outer casing 1 through the sealing hole 34.

[0023] A sliding rod 38 is slidably connected to the bottom of the outer casing 1, and a push ring 37 is connected to the bottom end of the sliding rod 38. The sliding rod 38 slides at the bottom position of the outer casing 1, and the push ring 37 is located outside the outer casing 1, so that the push ring 37 is connected to the sliding rod 38. This allows the device to adjust the position of the sliding rod 38 and the fixing ring 35 by pushing the push ring 37, thereby adjusting the position of the sealing column 36.

[0024] The bottom of the outer casing 1 is threadedly connected to a base plate 211, which corresponds to the inner casing 11. The base plate 211 and the lower slide plate 21 are connected by a base rod 212. The threaded base plate 211 at the bottom of the outer casing 1 can close the bottom of the outer casing 1. The base plate 211 and the lower slide plate 21 are connected by a base rod 212, so that the lower slide plate 21 can be separated by the base plate 211 and pulled to separate the lower slide plate 21.

[0025] The working principle and usage process of this utility model: Ethyl lactate undergoes an enzymatic catalytic reaction in the cavity above the mounting ring 3 between the outer casing 1 and the inner casing 11, under the action of the fixed bed installed in the inner casing 11. When it is necessary to replace this part of the fixed bed, the sealing column 36 is moved upward under the push of the fixing ring 35, supporting and sealing the inner wall of the sealing hole 34. Then, the upper rotating sleeve 26 is rotated, causing the docking holes 27 opened on the inner connecting ring 25 and the rotating sleeve 26 to be misaligned. At this time, ethyl lactate enters the inner connecting ring 25 and the rotating sleeve 26 through the inlet tube 4, and then passes through the inner casing. 11 is guided to the bottom of the outer housing 1 and discharged from the discharge pipe 41. Then, the lower threaded ring 31 is separated, and the fixed bed between the outer housing 1 and the inner housing 11 can be replaced. After replacement, all components are reset. When replacing the fixed bed in the inner housing 11, push the upper slide plate 2 and the lower slide plate 21 upward to connect them with the frame rod 13 and the lower sealing block 15, separating the inner cavity of the inner housing 11. Rotate the lower rotating sleeve 26 to misalign the mating hole 27 on the rotating sleeve 26 with the mating hole 27 on the inner connecting ring 25, isolating the inner cavity of the inner housing 11 from the cavity between the outer housing 1 and the inner housing 11. Separate one end of the connecting rod 22 from the lower slide plate 21 to disassemble and replace the fixed bed installed in the inner housing 11. After replacement, all components are reset.

Claims

1. A recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate, comprising an outer casing (1), an inner casing (11), a top sealing block (12), an inlet pipe (4), and a outlet pipe (41), characterized in that: An upper sealing block (12) is installed inside one of the inner boxes (11), and a lower sealing block (15) is installed below the upper sealing block (12). An upper sliding plate (2) and a lower sliding plate (21) are slidably connected to the inner walls of the two inner boxes (11). The upper sliding plate (2) and the lower sliding plate (21) are provided with clearance holes (23) that match the upper sealing block (12) and the lower sealing block (15). An outer connecting ring (24) is installed on the inner wall of the outer box (1), and an inner connecting ring (25) is installed on the inner box (11). A rotating sleeve (26) is slidably connected to the inner wall of the inner connecting ring (25). The outer casing (1) and the inner casing (11) are provided with a connecting hole (27). A lower threaded ring (31) is threaded between the outer casing (1) and the inner casing (11). An upper threaded ring (32) is threaded between the outer connecting ring (24) and the inner connecting ring (25). An installation ring (3) is installed between the outer casing (1) and the inner casing (11). A sealing hole (34) is provided on the installation ring (3). A lower threaded ring (31) and an upper threaded ring (32) are slidably connected between the outer connecting ring (24) and the inner connecting ring (25). A sealing post (36) is slidably connected to the inner wall of the sealing hole (34).

2. The recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate according to claim 1, characterized in that: The upper sealing block (12) is connected to the inner box (11) by a frame rod (13), the upper sealing block (12) and the lower sealing block (15) are connected by a vertical rod (14), the upper sliding plate (2) and the lower sliding plate (21) are respectively attached to the upper sealing block (12) and the vertical rod (14), and the upper sliding plate (2) and the lower sliding plate (21) are connected by a connecting rod (22).

3. The recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate according to claim 1, characterized in that: The lower threaded ring (31) and the upper threaded ring (32) are connected by a fixing rod (33).

4. The recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate according to claim 1, characterized in that: The outer casing (1) is provided with a fixing ring (35), which is connected to the bottom end of the sealing post (36).

5. A recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate according to claim 4, characterized in that: The bottom of the outer casing (1) is slidably connected to a slide rod (38), and the bottom end of the slide rod (38) is connected to a push ring (37).

6. The recyclable enzymatic catalytic fixed-bed reactor for ethyl lactate according to claim 1, characterized in that: The bottom of the outer casing (1) is threadedly connected to a base plate (211), which corresponds to the inner casing (11). The base plate (211) and the lower slide plate (21) are connected by a base rod (212).

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