Cyclohexene hydration catalyst regeneration device
By using a rotating disc to regenerate the membrane separator during the catalytic reaction, the inconvenience and safety hazards of catalyst deactivation are solved, thus improving the efficiency and safety of the cyclohexene catalytic reaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, when the catalyst is deactivated in the cyclohexenylcyclohexanone dehydrogenation reaction and requires regeneration by a separator, the operation is inconvenient and poses safety hazards, affecting production efficiency and safety.
The membrane separator is rotated by a turntable, and the membrane separator is regenerated during the catalytic reaction using a feed pipe, a deionized water pipe, and a nitric acid cleaning solution pipe. Combined with the design of a sealed box and sealing ring, the catalyst can be regenerated efficiently and operated safely.
It improves the efficiency of cyclohexene catalytic reaction, enhances operational safety, reduces hazards, and simplifies the loading and unloading process of membrane separators.
Smart Images
Figure CN224071668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cyclohexanone production technology, and in particular to a cyclohexene hydration catalyst regeneration device. Background Technology
[0002] In the dehydrogenation reaction of cyclohexenylcyclohexanone, the catalyst plays a crucial role. It not only accelerates the reaction rate and improves selectivity but also reduces reaction temperature and pressure, thereby saving energy and costs. However, catalysts gradually deactivate during use, leading to a decrease in reaction efficiency.
[0003] When regenerating a catalyst membrane separator, it is necessary to repeatedly rinse it with deionized water and nitric acid cleaning solution. However, most existing technologies involve removing the membrane separator, completing the regeneration, and then putting it back into use. This seriously affects the production efficiency of the cyclohexenylcyclohexanone dehydrogenation reaction. At the same time, the loading and unloading of the membrane separator greatly increases the danger, and improper operation can seriously affect the health of the workers. Utility Model Content
[0004] This invention addresses the shortcomings of existing technologies by providing a cyclohexene hydration catalyst regeneration device. This device uses a turntable to drive the membrane separator to rotate, passing it through a feed pipe, a deionized water pipe, and a nitric acid cleaning solution pipe. Simultaneously, it regenerates other membrane separators during the cyclohexene catalytic reaction, increasing the efficiency and safety of the cyclohexene catalytic reaction. The device is simple, efficient, safe, reliable, and easy to operate.
[0005] This utility model is achieved through the following technical solution: a cyclohexene hydration catalyst regeneration device is provided, including a sealed box, a turntable rotating inside the sealed box, and a drive mechanism A on the sealed box to drive the turntable to rotate; the turntable has several through holes evenly arranged around its axis, and a membrane separator for placing the catalyst is fixed in each through hole; the sealed box has several perforations located on the upper and lower sides of the turntable and extending towards the turntable, and a sliding tube slides through each perforation, and a drive mechanism B on the sealed box to drive the sliding tube to move along the axial direction of the perforation; the end of the sliding tube facing the turntable intersects the movement trajectory of the membrane separator, and each corresponding sliding tube is connected to a feed pipe, a deionized water pipe, and a nitric acid cleaning solution pipe, respectively; by the turntable driving the membrane separator to rotate and passing through the feed pipe, deionized water pipe, and nitric acid cleaning solution pipe, the membrane separator is regenerated while the cyclohexene catalytic reaction is taking place, thereby increasing the efficiency of the cyclohexene catalytic reaction; the membrane separator can be replaced in a sealed environment through the sealed box, greatly increasing safety.
[0006] As an optimization, an inspection port is provided on the sealed box, which intersects with the movement trajectory of the membrane separator, and a sealing cover is provided on the inspection port; the membrane separator can be easily loaded and unloaded through the inspection port.
[0007] As an optimization, the sealed box is connected to a waste bin and a filter device via a fluid conveying mechanism; the air inside the sealed box is circulated and purified through the fluid conveying mechanism and the filter device, preventing the leakage of harmful gases and increasing operational safety.
[0008] As an optimization, a sealing ring A extending around the membrane separator is fixed on the turntable, and a sealing ring B that matches the sealing ring A is provided at the end of the slide tube facing the turntable; the matching sealing rings A and B prevent leakage during the transfer of materials, deionized water and nitric acid cleaning solution.
[0009] As an optimization, sealing ring A has a groove and a protrusion extending circumferentially along sealing ring B in one of its openings; the groove and protrusion enhance the sealing effect of sealing ring A and sealing ring B.
[0010] As an optimization, the turntable is equipped with six or more membrane separators, which are sequentially connected to the feed pipe, fluid conveying mechanism, inspection port, deionized water pipe, nitric acid cleaning solution pipe, and deionized water pipe. Multiple steps such as catalytic reaction, air purification, membrane separator loading and unloading, and catalyst regeneration can be carried out simultaneously through six or more membrane separators.
[0011] The beneficial effects of this invention are as follows: The rotating disc drives the membrane separator to rotate and pass through the feed pipe, deionized water pipe, and nitric acid cleaning solution pipe, respectively, simultaneously regenerating other membrane separators during the cyclohexene catalytic reaction, thus increasing the efficiency of the cyclohexene catalytic reaction; the membrane separator can be replaced in a sealed environment via a sealed box, greatly increasing safety; the air inside the sealed box is circulated and purified through a fluid conveying mechanism and filtration device, preventing the leakage of harmful gases and increasing operational safety; multiple steps, including catalytic reaction, air purification, membrane separator loading and unloading, and catalyst regeneration, can be carried out simultaneously using six or more membrane separators. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of the present invention;
[0013] Figure 2 for Figure 1 A schematic diagram of the structure at point A;
[0014] Figure 3 This is a schematic diagram of the structure of this utility model;
[0015] Figure 4 The following is a reference drawing of this utility model;
[0016] As shown in the figure:
[0017] 1. Sealed box, 2. Turntable, 3. Drive mechanism A, 4. Membrane separator, 5. Slide tube, 6. Drive mechanism B, 7. Feed pipe, 8. Deionized water pipe, 9. Nitric acid cleaning solution pipe, 10. Sealing cover, 11. Fluid conveying mechanism, 12. Waste bin, 13. Filter device, 14. Sealing ring A, 15. Sealing ring B. Detailed Implementation
[0018] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0019] like Figure 1 , 3 The cyclohexene hydration catalyst regeneration device of this utility model, as shown in Figure 4, includes a sealed box 1, a turntable 2 rotating inside the sealed box 1, and a drive mechanism A3 on the sealed box 1 for driving the turntable 2 to rotate; the turntable 2 has several through holes evenly arranged around its axis, and a membrane separator 4 for placing the catalyst is fixedly installed in each through hole; the sealed box 1 has several perforations located on the upper and lower sides of the turntable 2 and extending toward the turntable 2, and a sliding tube 5 slides through each perforation; the sealed box 1 has a drive mechanism B6 for driving the sliding tube 5 to move along the axial direction of the perforations; one end of the sliding tube 5 faces the turntable 2. The movement trajectory of the membrane separator 4 intersects with that of the membrane separator 4, and each corresponding slide tube 5 is connected to the feed pipe 7, the deionized water pipe 8, and the nitric acid cleaning solution pipe 9 respectively; the drive mechanism A3 is existing technology and can be a motor; the through hole is parallel to the axis of the turntable 2; the axis of the through hole is perpendicular to the movement trajectory of the membrane separator 4; the drive mechanism B6 includes two racks that are fixed to the upper and lower sides of the turntable 2 respectively and extend along the axis of the turntable 2, the two racks are meshed with a gear, and the two racks are located on both sides of the gear; the gear is mounted on the sealing box 1, and the sealing box 1 is equipped with a motor that drives the gear to rotate.
[0020] The feed pipe 7 delivers raw materials, and the reaction occurs at the membrane separator 4 connected to the feed pipe 7. After the catalyst efficiency in the membrane separator 4 decreases, the feed pipe 7 stops delivering materials. The drive mechanism B6 is activated, which drives the sliding tubes 5 on both sides of the turntable 2 to move away from the turntable 2. The drive mechanism A3 is activated, which drives the membrane separator 4 to rotate through the turntable 2 until the membrane separator 4 reaches the position corresponding to the next sliding tube 5. The drive mechanism A3 is then closed, and the drive mechanism B6 is activated. The drive mechanism B6 drives the sliding tubes 5 on both sides of the turntable 2 to move towards each other and gradually approach the turntable 2 until the end of the sliding tube 5 facing the turntable 2 is in contact with the turntable 2. The corresponding sliding tubes 5 on both sides of the turntable 2 are connected through the corresponding through holes. The feed pipe 7 delivers raw materials to start a new catalytic reaction. The deionized water pipe 8 delivers deionized water to rinse the corresponding membrane separator 4. The nitric acid cleaning solution pipe 9 delivers nitric acid cleaning solution to regenerate the catalyst in the corresponding membrane separator 4.
[0021] like Figure 1 and4 The sealing box 1 shown has an inspection port, which intersects with the movement trajectory of the membrane separator 4, and the inspection port is equipped with a sealing cover 10.
[0022] Open the sealing cover 10 and load / unload the membrane separator 4 onto the turntable 2 through the inspection port.
[0023] like Figure 1 and 4 The sealed box 1 shown is connected to the waste tank 12 and the filter device 13 through the fluid conveying mechanism 11; the fluid conveying mechanism 11 is the prior art and can be a piston pump, etc.; the fluid conveying mechanism 11 is connected to the sealed box 1, the waste tank and the filter device 13 in sequence through the waste liquid pipe.
[0024] Start the fluid delivery mechanism 11. The fluid delivery mechanism 11 circulates and purifies the air in the sealed box 1 through the filter device 13, and the waste liquid is collected in the waste liquid tank.
[0025] like Figure 1 and 2 A sealing ring A14 extending around the membrane separator 4 is fixed on the turntable 2 shown, and a sealing ring B15 that matches the sealing ring A14 is provided at one end of the slide tube 5 facing the turntable 2.
[0026] Drive mechanism B6 drives the slide tubes 5 on both sides of turntable 2 to move away from each other and gradually move away from turntable 2, and seal ring A14 and seal ring B15 gradually separate; drive mechanism B6 drives the slide tubes 5 on both sides of turntable 2 to move towards each other and gradually move closer to turntable 2 until seal ring A14 and seal ring B15 fit together.
[0027] like Figure 1 and 2 The sealing ring A14 shown has a groove and a protrusion extending circumferentially along the sealing ring B15.
[0028] The drive mechanism B6 drives the slide tubes 5 on both sides of the turntable 2 to move towards each other and gradually approach the turntable 2. The sealing rings A14 and B15 gradually approach each other and interlock until the sealing rings A14 and B15 are in contact.
[0029] like Figure 1 , 3 Six or more membrane separators 4 are installed on the turntable 2 shown in Figure 4. The membrane separators 4 are sequentially connected to the feed pipe 7, the fluid conveying mechanism 11, the inspection port, the deionized water pipe 8, the nitric acid cleaning solution pipe 9, and the deionized water pipe 8.
[0030] Drive mechanism A3 drives membrane separator 4 to rotate via turntable 2 until membrane separator 4 reaches the position corresponding to the next slide tube 5. Under the drive of turntable 2, membrane separator 4 passes sequentially through feed pipe 7, fluid conveying mechanism 11, inspection port, deionized water pipe 8, nitric acid cleaning solution pipe 9, and the corresponding position of deionized water pipe 8. Feed pipe 7 conveys raw materials and the reaction occurs at membrane separator 4 connected to feed pipe 7. Fluid conveying mechanism 11 circulates and purifies the air in sealed box 1 through filter device 13. After the air is purified, membrane separator 4 is replaced through inspection port. Deionized water pipe 8 conveys deionized water to rinse the corresponding membrane separator 4. Nitric acid cleaning solution pipe 9 conveys nitric acid cleaning solution to circulate and regenerate the catalyst of the corresponding membrane separator 4. Deionized water pipe 8 conveys deionized water to rinse the corresponding membrane separator 4 again.
[0031] In actual production, the feed pipe 7 transports raw materials and the reaction occurs at the membrane separator 4 connected to the feed pipe 7. After the catalyst efficiency in the membrane separator 4 decreases, the feed pipe 7 stops transporting materials. The drive mechanism B6 is started, and the drive mechanism B6 drives the slide tubes 5 on both sides of the turntable 2 to move away from each other and gradually move away from the turntable 2. The drive mechanism A3 is started, and the drive mechanism A3 drives the membrane separator 4 to rotate through the turntable 2 until the membrane separator 4 reaches the position corresponding to the next slide tube 5. The drive mechanism A3 is then closed and the drive mechanism B6 is started. The drive mechanism B6 drives the slide tubes 5 on both sides of the turntable 2 to move towards each other and gradually move closer to the turntable 2. The sealing rings A14 and B15 gradually approach each other and interlock until the sealing rings A14 and B15 are in contact. The corresponding slide tubes 5 on both sides of the turntable 2 are connected through the corresponding through holes.
[0032] Driven by the turntable 2, the membrane separator 4 sequentially passes through the feed pipe 7, the fluid conveying mechanism 11, the inspection port, the deionized water pipe 8, the nitric acid cleaning solution pipe 9, and the corresponding position of the deionized water pipe 8. The feed pipe 7 conveys the raw material and the reaction occurs at the membrane separator 4 connected to the feed pipe 7. The fluid conveying mechanism 11 circulates and purifies the air in the sealed box 1 through the filter device 13, and the waste liquid is collected in the waste liquid tank. After the air is purified, the membrane separator 4 is replaced through the inspection port. The deionized water pipe 8 conveys deionized water to rinse the corresponding membrane separator 4. The nitric acid cleaning solution pipe 9 conveys nitric acid cleaning solution to circulate and regenerate the catalyst of the corresponding membrane separator 4. The deionized water pipe 8 conveys deionized water to rinse the corresponding membrane separator 4 again.
[0033] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.
Claims
1. A device for regenerating cyclohexene hydrated catalyst, characterized in that: The utility model provides a sealing box (1) is set up in the sealing box (1) rotationally, and the sealing box (1) is equipped with the drive mechanism A (3) of driving rotation disc (2) rotation, and the rotation disc (2) is equipped with a plurality of evenly arranged through -holes around the rotation disc (2) axis, and the through -hole is fixed with the membrane separator (4) of placing catalyst, and the sealing box (1) is equipped with a plurality of perforations on the upper and lower sides of rotation disc (2) and extends to rotation disc (2), and the sliding pipe (5) is slidably arranged in the perforation, and the sealing box (1) is equipped with the drive mechanism B (6) of driving sliding pipe (5) axial movement along the perforation, and the end of sliding pipe (5) towards rotation disc (2) and the motion trail of membrane separator (4) intersect, and the corresponding each sliding pipe (5) is connected with feed pipe (7), deionized water pipe (8) and nitric acid cleaning liquid pipe (9) respectively.
2. The cyclohexene hydration catalyst regenerator of claim 1, wherein: The sealing box (1) is equipped with an access hole, the access hole intersects with the motion trail of the membrane separator (4), and the access hole is equipped with a sealing cover (10).
3. The cyclohexene hydration catalyst regenerator of claim 2, wherein: The sealing box (1) is connected with the waste box (12) and the filtering device (13) through the fluid conveying mechanism (11).
4. The cyclohexene hydration catalyst regenerator of claim 1, wherein: The rotation disc (2) is fixedly provided with a sealing ring A (14) extending around the membrane separator (4), and the end of the sliding pipe (5) towards the rotation disc (2) is provided with a sealing ring B (15) matched with the sealing ring A (14).
5. The cyclohexene hydration catalyst regenerator of claim 4, wherein: The sealing ring A (14) is provided with a groove and a protrusion extending along the circumference of the sealing ring A (14) towards the sealing ring B (15).
6. The cyclohexene hydration catalyst regenerator of claim 3, wherein: The rotation disc (2) is provided with six or more membrane separators (4), and the membrane separators (4) correspond to the feed pipe (7), the fluid conveying mechanism (11), the access hole, the deionized water pipe (8), the nitric acid cleaning liquid pipe (9) and the deionized water pipe (8) in sequence.