Cyclohexanone rectification column float valve tray apparatus
Patent Information
- Application Number
- CN202522450727.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-19
AI Technical Summary
但现有常规的浮阀塔板多固定于一体式的精馏塔体中，长期使用后若塔板出现腐蚀损坏则无法进行便捷地拆装更换，有待解决
[0013]本实用新型的有益效果是：安装中塔体时，可先将滑台对准相应导轨安装到位，然后通过滑台在相应导轨上的滑动，将中塔体沿前后方向移动到位在上塔体和下塔体之间，使安装凸缘与同侧的限位凸缘抵接到位，从而可实现对中塔体的初步定位安装。接着，运行液压缸，使其活塞杆伸长，带动相应电机、转轴和固定块整体朝着中塔体移动，直至转轴和固定块贯穿对应第一通槽和第二通槽。之后，运行电机，带动固定块转动90度，然后再次运行液压缸，使其活塞杆收缩，带动固定块朝着相应安装凸缘移动，直至固定块抵压在对应的安装凸缘上，便可将中塔体插接并抵压限位固定住，完成对中塔体的进一步固定安装，且安装稳固，不影响后续使用。之后，通过整个塔体进行相应精馏作业即可。长期使用后若浮阀塔板出现腐蚀损坏需要更换时，只需对中塔体进行整体更换即可，具体为：停机状态下，先运行液压缸，使其活塞杆伸长，即可带动相应固定块远离对应安装凸缘，解除对安装凸缘的抵压，再运行电机，带动固定块转动90度，即可使固定块与对应第一通槽和第二通槽对准。接着，再次运行液压缸，使其活塞杆收缩，带动转轴和固定块从对应第一通槽和第二通槽移出，即可解除对中塔体的插接锁定，之后通过滑台沿前后方向将中塔体移走，便可完成对原有中塔体的拆卸，随后按前述安装新的中塔体即可。以此，通过将整个精馏塔设置成分体式结构，能通过对浮阀塔板所在中塔体的灵活且便捷地拆装来实现对浮阀塔板的整体更换，操作简便，更加实用。
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Figure CN224911792U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of distillation technology, specifically relating to a floating valve tray device for a cyclohexanone distillation column. Background Technology
[0002] Cyclohexanone is an important chemical raw material, a major intermediate in the manufacture of nylon, caprolactam, and adipic acid, and also an important industrial solvent. Common methods for preparing cyclohexanone include the phenol method, the cyclohexane method, and the cyclohexene method. After the reaction produces cyclohexanone, to improve its purity, it is usually further purified by distillation. Common distillation columns are mainly of two types: plate distillation and packed distillation. A plate distillation column consists of a cylindrical column body and several horizontally spaced trays. During operation, the liquid flows from top to bottom through each tray under gravity, exiting at the bottom. The gas, driven by the pressure difference, flows from bottom to top through each tray, exiting at the top. Each tray maintains a certain depth of liquid layer, and the gas disperses into the liquid layer through the trays, achieving interphase contact mass transfer.
[0003] Currently, common tray types used in plate distillation columns include bubble cap trays, sieve trays, valve trays, and novel jet trays. Among these, the valve tray's floating valve can automatically adjust its position according to the gas velocity, reducing pressure drop and improving operational flexibility while ensuring sufficient contact between the gas and liquid phases. This structure results in higher mass transfer efficiency than bubble cap trays and lower cost than sieve trays, making it one of the most widely used plate column types in industry. However, conventional valve trays are mostly fixed in a single distillation column body. After long-term use, if the trays corrode and become damaged, they cannot be easily disassembled and replaced, a problem that needs to be addressed. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a floating valve tray device for a cyclohexanone distillation column, which can realize the overall convenient assembly and disassembly of the column body where the floating valve tray is located, so as to solve the above problems.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a floating valve tray device for a cyclohexanone distillation column, comprising a lower column body, an upper column body fixedly mounted above the lower column body, and a middle column body detachably connected between the lower and upper column bodies. Limiting flanges are provided at the bottom of the upper column body and the top of the lower column body. Several rectangular first through-slots are formed on the limiting flanges, arranged in a left-right direction. Hydraulic cylinders are fixedly mounted on the outer walls of the upper and lower column bodies corresponding to the first through-slots. The piston rods of the hydraulic cylinders face the corresponding first through-slots and are fixedly connected to a motor. The output shaft of the motor faces the corresponding first through-slot and is fixedly connected to a rotating shaft. One end of the rotating shaft facing the corresponding first through-slot is fixedly connected to... The lower tower body is equipped with a fixed block. T-shaped guide rails are fixed on both the left and right sides of the lower tower body, and sliding tables are slidably provided on both guide rails. Inverted L-shaped support rods are fixed on the top of both sliding tables. The horizontal ends of the two support rods are fixedly connected to the left and right outer sides of the middle tower body, respectively. Mounting flanges are fixed at both the top and bottom ends of the middle tower body. The mounting flanges abut against the adjacent limiting flanges, and a second through groove is opened at the position corresponding to the first through groove. The rotating shaft extends into the corresponding first and second through grooves. The fixed block passes through the corresponding first and second through grooves and presses against the corresponding mounting flange after rotating 90 degrees. Several floating valve tower plates are fixedly provided in the middle tower body at vertical intervals.
[0006] Preferably, a sealing gasket is fixed on the side of the limiting flange near the middle tower body.
[0007] Preferably, the diameter of the rotating shaft is adapted to the groove width of the corresponding first and second through grooves.
[0008] Preferably, the fixing block is adapted to the corresponding first through slot and second through slot.
[0009] Preferably, the upper part of the upper tower body is connected to a liquid inlet pipe and the top is connected to an exhaust pipe.
[0010] Preferably, the lower part of the tower body is connected to an air inlet pipe and the bottom is connected to a liquid outlet pipe.
[0011] Preferably, the floating valve tray includes a plate body with a plurality of valve holes. A valve cap is provided above the valve holes. A plurality of L-shaped legs are fixed on the bottom periphery of the valve cap. The horizontal part of the legs faces away from the valve holes and is fixedly connected to the top of the plate body. A guide groove is vertically provided on the inner side of the vertical part of the legs. A valve plate is provided between the valve holes and the valve cap. A slider is fixed on the periphery of the valve plate. The slider corresponds to the guide groove and is slidably connected to the corresponding guide groove.
[0012] Preferably, the slider is adapted to the corresponding guide groove.
[0013] The beneficial effects of this utility model are as follows: When installing the middle tower body, the slide table can be aligned with the corresponding guide rail and installed in place first. Then, by sliding the slide table on the corresponding guide rail, the middle tower body is moved in the front-back direction and positioned between the upper and lower tower bodies, so that the mounting flange abuts against the limiting flange on the same side, thereby achieving the initial positioning and installation of the middle tower body. Next, the hydraulic cylinder is operated, causing its piston rod to extend, driving the corresponding motor, rotating shaft, and fixing block to move towards the middle tower body as a whole, until the rotating shaft and fixing block pass through the corresponding first and second through slots. After that, the motor is operated, driving the fixing block to rotate 90 degrees, and then the hydraulic cylinder is operated again, causing its piston rod to retract, driving the fixing block towards the corresponding mounting flange, until the fixing block abuts against the corresponding mounting flange, thus inserting and pressing the middle tower body to fix it in place, completing the further fixing and installation of the middle tower body. The installation is stable and does not affect subsequent use. Afterwards, the corresponding distillation operation can be carried out through the entire tower body. If the floating valve trays show signs of corrosion and damage after prolonged use and require replacement, only the entire central column body needs to be replaced. Specifically: With the system stopped, first operate the hydraulic cylinder to extend its piston rod, which will move the corresponding fixing block away from the corresponding mounting flange, releasing the pressure on the mounting flange. Then, operate the motor to rotate the fixing block 90 degrees, aligning it with the corresponding first and second through slots. Next, operate the hydraulic cylinder again to retract its piston rod, moving the rotating shaft and fixing block out of the corresponding first and second through slots, thus releasing the insertion lock on the central column body. Then, use the slide table to move the central column body back and forth, completing the disassembly of the original central column body. Finally, install the new central column body as described above. In this way, by setting the entire distillation column in a modular structure, the entire floating valve tray can be replaced through flexible and convenient disassembly and assembly of the central column body containing the floating valve tray, making the operation simple and more practical. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a front view structural diagram of the present invention without the middle tower body installed; Figure 3 This is a schematic diagram of the main structure of the tower body in this utility model; Figure 4 This is a schematic diagram of the main view cross-sectional structure of the lower part of the upper tower body and the upper part of the lower tower body of this utility model; Figure 5 This is a top view of the limiting flange of this utility model; Figure 6 This is a schematic diagram of the main cross-sectional structure of the tower body in this utility model; Figure 7 This is a top view schematic diagram of the mounting flange of this utility model; Figure 8This is a front sectional view of the structure of the mounting flange and the limiting flange of this utility model. Figure 9 This is a bottom view of the structure when the mounting flange and the limiting flange of this utility model are connected; Figure 10 This is a schematic diagram of the main structure of the floating valve tower plate of this utility model.
[0015] In the diagram, the following labels are used: 1 is the lower tower body, 2 is the upper tower body, 3 is the middle tower body, 4 is the limiting flange, 5 is the first through groove, 6 is the hydraulic cylinder, 7 is the motor, 8 is the rotating shaft, 9 is the fixing block, 10 is the guide rail, 11 is the slide table, 12 is the support rod, 13 is the mounting flange, 14 is the second through groove, 15 is the floating valve tower plate, 16 is the sealing gasket, 17 is the liquid inlet pipe, 18 is the exhaust pipe, 19 is the air inlet pipe, 20 is the liquid outlet pipe, 21 is the plate body, 22 is the valve hole, 23 is the valve cap, 24 is the support leg, 25 is the guide groove, 26 is the valve plate, and 27 is the slider. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: like Figures 1 to 10 As shown, a floating valve tray device for a cyclohexanone distillation column includes a lower column body 1, an upper column body 2 fixedly mounted above the lower column body 1, and a middle column body 3 detachably connected between the lower column body 1 and the upper column body 2. Limiting flanges 4 are provided at the bottom of the upper column body 2 and the top of the lower column body 1. Several rectangular first through-slots 5 are formed on the limiting flanges 4, arranged in the left-right direction. Hydraulic cylinders 6 are fixedly mounted on the outer walls of the upper column body 2 and the lower column body 1 corresponding to the first through-slots 5. A motor 7 is fixedly connected to the piston rod of the hydraulic cylinder 6 facing the corresponding first through-slot 5. A rotating shaft 8 is fixedly connected to the output shaft 7 facing the corresponding first through-slot 5. A fixing block 9 is fixedly connected to one end of the rotating shaft 8 facing the corresponding first through-slot 5. Both sides of the lower tower body 1 are fixed with T-shaped guide rails 10 arranged in the front-to-back direction. Each guide rail 10 has a sliding table 11. The top of each sliding table 11 is fixed with an inverted L-shaped support rod 12. The horizontal ends of the two support rods 12 are fixedly connected to the left and right outer sides of the middle tower body 3. Both the top and bottom ends of the middle tower body 3 are fixed with mounting flanges 13. The mounting flanges 13 abut against the adjacent limiting flanges 4, and each flange has a second through groove 14 at a position corresponding to the first through groove 5. A rotating shaft 8 extends into the corresponding first through groove 5 and second through groove 14. A fixing block 9 passes through the corresponding first through groove 5 and second through groove 14 and presses against the corresponding mounting flange 13 after rotating 90 degrees. Several floating valve trays 15 are fixedly arranged vertically within the middle tower body 3. When installing the middle tower body 3, first align the slide table 11 with the corresponding guide rail 10 and install it in place. Then, by sliding the slide table 11 on the corresponding guide rail 10, move the middle tower body 3 in the front-back direction between the upper tower body 2 and the lower tower body 1, so that the mounting flange 13 abuts against the limiting flange 4 on the same side, thus achieving the initial positioning and installation of the middle tower body 3. Next, operate the hydraulic cylinder 6 to extend its piston rod, driving the corresponding motor 7, rotating shaft 8, and fixing block 9 to move towards the middle tower body 3 as a whole, until the rotating shaft 8 and fixing block 9 pass through the corresponding first through groove 5 and second through groove 14. After that, operate the motor 7 to drive the fixing block 9 to rotate 90 degrees, and then operate the hydraulic cylinder 6 again to retract its piston rod, driving the fixing block 9 towards the corresponding mounting flange 13, until the fixing block 9 presses against the corresponding mounting flange 13, thus inserting and pressing the middle tower body 3 to fix it in place, completing the further fixing and installation of the middle tower body 3. The installation is stable and does not affect subsequent use. Afterwards, the corresponding distillation operation can be carried out through the entire tower body. If the floating valve tray 15 is corroded and damaged after long-term use and needs to be replaced, only the entire tower body 3 needs to be replaced. Specifically, in the shutdown state, first run the hydraulic cylinder 6 to extend its piston rod, which will drive the corresponding fixing block 9 away from the corresponding mounting flange 13, releasing the pressure on the mounting flange 13. Then run the motor 7 to drive the fixing block 9 to rotate 90 degrees, so that the fixing block 9 is aligned with the corresponding first through groove 5 and second through groove 14. Next, run the hydraulic cylinder 6 again to retract its piston rod, which will drive the rotating shaft 8 and the fixing block 9 to move out of the corresponding first through groove 5 and second through groove 14, thereby releasing the insertion lock of the tower body 3. Then, move the tower body 3 away in the front-back direction through the slide table 11 to complete the disassembly of the original tower body 3. Then, install the new tower body 3 as described above. Therefore, by setting the entire distillation column as a split structure, the entire replacement of the floating valve tray 15 can be achieved by flexibly and conveniently disassembling and assembling the column body 3 where the floating valve tray 15 is located. The operation is simple and more practical.
[0017] In this embodiment, a sealing gasket 16 is fixed on the side of the limiting flange 4 near the middle tower body 3 to ensure the sealing of the connection between the middle tower body 3 and the upper tower body 2 and the lower tower body 1, so as not to affect the distillation operation.
[0018] In this embodiment, the diameter of the rotating shaft 8 is adapted to the groove width of the corresponding first through groove 5 and second through groove 14, so as to ensure that when the rotating shaft 8 is inserted into the first through groove 5 and the second through groove 14, the freedom of the middle tower body 3 in the front and rear directions can be restricted. This, together with the left and right and up and down freedom restricted by the slide table 10 and the axial force applied after the fixing block 9 presses against it, achieves the stable installation and fixation of the middle tower body 3.
[0019] In this embodiment, the fixing block 9 is adapted to the corresponding first through slot 5 and second through slot 14 to ensure that the fixing block 9 can pass smoothly through the first through slot 5 and second through slot 14, so as to achieve the fixed installation of the central tower body 3.
[0020] In this embodiment, the upper part of the upper column body 2 is connected to the liquid inlet pipe 17 and the top is connected to the exhaust pipe 18, which are used for liquid phase feeding and tail gas discharge during distillation.
[0021] In this embodiment, the lower column body 1 is connected to an inlet pipe 19 at the bottom and a drain pipe 20 at the bottom for feeding the gas phase and discharging the tail liquid during distillation.
[0022] In this embodiment, the floating valve tray 15 includes a plate body 21, on which a plurality of valve holes 22 are provided. A valve cap 23 is provided above the valve holes 22. A plurality of L-shaped support legs 24 are fixedly provided on the bottom periphery of the valve cap 23. The horizontal part of the support leg 24 faces away from the valve hole 22 and is fixedly connected to the top of the plate body 21. A guide groove 25 is vertically provided on the inner side of the vertical part of the support leg 24. A valve plate 26 is provided between the valve hole 22 and the valve cap 23. A slider 27 is fixedly provided on the periphery of the valve plate 26. The slider 27 corresponds to the guide groove 25 and is slidably connected to the corresponding guide groove 25. During distillation, the gas phase flows from bottom to top. When it flows through the valve hole 22, the slider 27 and the corresponding guide groove 25 can slide together to lift the valve plate 26 and form a high-speed gas flow. This gas flow comes into contact with the liquid phase flowing from top to bottom, allowing the gas flow to disperse into bubbles in the liquid layer, increasing the gas-liquid contact area and realizing distillation.
[0023] In this embodiment, the slider 27 is adapted to the corresponding guide groove 25 to ensure the smooth lifting and lowering of the valve plate 26.
[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A floating valve tray system for a cyclohexanone distillation column, characterized in that, The system includes a lower tower body, an upper tower body fixedly mounted above the lower tower body, and a middle tower body detachably connected between the lower and upper tower bodies. The bottom of the upper tower body and the top of the lower tower body are each provided with a limiting flange. Several rectangular first through slots are formed on the limiting flanges, arranged in a left-right direction. Hydraulic cylinders are fixedly mounted on the outer walls of the upper and lower tower bodies corresponding to the first through slots. The piston rods of the hydraulic cylinders face the corresponding first through slots and are fixedly connected to a motor. The output shaft of the motor faces the corresponding first through slots and is fixedly connected to a rotating shaft. A fixing block is fixedly connected to the end of the rotating shaft facing the corresponding first through slot. The lower tower body is fixedly mounted on both its left and right sides. The tower has T-shaped guide rails arranged in the front-to-back direction. Each guide rail has a sliding table that slides on it. Each sliding table has an inverted L-shaped support rod fixed to its top. The horizontal ends of the two support rods are fixedly connected to the left and right outer sides of the middle tower body. The top and bottom ends of the middle tower body are fixedly provided with mounting flanges. Each mounting flange abuts against the adjacent limiting flange and has a second through groove at the position corresponding to the first through groove. The rotating shaft extends into the corresponding first and second through grooves. The fixing block passes through the corresponding first and second through grooves and presses against the corresponding mounting flange after rotating 90 degrees. Several floating valve tower plates are fixedly provided in the middle tower body at vertical intervals.
2. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, A sealing gasket is fixed on the side of the limiting flange near the middle tower body.
3. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, The diameter of the rotating shaft is adapted to the groove width of the corresponding first and second through grooves.
4. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, The fixing block is adapted to the corresponding first through slot and second through slot.
5. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, The upper part of the tower body is connected to a liquid inlet pipe, and the top is connected to an exhaust pipe.
6. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, The lower part of the tower body is connected to an air inlet pipe, and the bottom is connected to a liquid drain pipe.
7. The floating valve tray equipment for the cyclohexanone distillation column according to claim 1, characterized in that, The floating valve tray includes a plate body with several valve holes. A valve cap is provided above each valve hole. Several L-shaped legs are fixed on the bottom periphery of the valve cap. The horizontal part of each leg faces away from the valve hole and is fixedly connected to the top of the plate body. A guide groove is vertically provided on the inner side of the vertical part of each leg. A valve plate is provided between the valve hole and the valve cap. A slider is fixed on the periphery of the valve plate. The slider corresponds to the guide groove and is slidably connected to the corresponding guide groove.
8. The floating valve tray equipment for the cyclohexanone distillation column according to claim 7, characterized in that, The slider is adapted to the corresponding guide groove.