Efficient rectifying tower

Abstract

The utility model relates to the technical field of rectifying devices, and discloses an efficient rectifying tower which comprises a rectifying tower body, and two packing layers are arranged in the rectifying tower body at intervals; the rectifying tower body is sequentially divided into an upper cavity, a middle cavity and a lower cavity from top to bottom by the two packing layers; the packing layer comprises an upper mounting plate, a lower mounting plate, a connecting sleeve and packing; a guide ring is fixed to the lower end face of each lower mounting plate, and the rotating assembly comprises a motor, a rotating shaft, an upper scraping plate, a middle scraping plate, a lower scraping plate, a gas distribution plate and a stirring paddle. Due to the arrangement of the guide ring, the downward flowing of a liquid phase along the inner side wall of the rectifying tower body is reduced, the contact between the liquid phase and a gas phase is increased, and the rectifying efficiency is favorably improved. And by arranging the rotating assembly, the inner side wall of the rectifying tower body can be conveniently scraped and swept, and solid impurities existing in the rectifying process are prevented from being adhered to the inner side wall of the rectifying tower body.

Description

Technical Field

[0001] The utility model belongs to the technical field of distillation devices, in particular to a high-efficiency distillation tower. Background Art

[0002] In chemical production, distillation is a commonly used process. Distillation is a separation process that uses the different volatilities of the components in a mixture to separate the components. Distillation is usually carried out in a distillation tower, where the gas and liquid phases are in countercurrent contact to carry out interphase heat and mass transfer. The volatile components in the liquid phase enter the gas phase, and the less volatile components in the gas phase are transferred to the liquid phase. As a result, almost pure volatile components can be obtained at the top of the tower, and almost pure less volatile components can be obtained at the bottom of the tower, thereby achieving the purpose of component separation.

[0003] However, in the actual use of the distillation tower, when the liquid phase falls from the top, part of the liquid phase will flow down along the tower wall. This process will not only cause the solid impurities in the liquid phase to adhere to the tower wall, but also cause the packing layer and other components of the distillation tower to be blocked after a long period of accumulation and then falling. At the same time, the liquid phase left along the tower wall cannot fully contact with the gas phase, reducing the efficiency of distillation. And when the gas phase enters through the air inlet pipe, it cannot rise evenly in the distillation tower, affecting the efficiency of distillation.

[0004] Therefore, there is an urgent need for an efficient distillation tower to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the existing technical problems and provide a high-efficiency distillation tower.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented according to the following technical scheme:

[0007] A high-efficiency distillation tower comprises a distillation tower body, wherein an exhaust pipe is arranged on the upper end surface of the distillation tower body, a liquid discharge pipe is arranged on the lower end surface of the distillation tower body, and an air inlet pipe and a liquid inlet pipe are arranged on the left side of the distillation tower body; a packing layer is arranged inside the distillation tower body; a spray assembly is arranged on the upper side inside the distillation tower body; the spray assembly is connected with the bottom of the distillation tower body through a connecting pipe; and a rotating assembly is also included;

[0008] There are two packing layers, which are arranged at intervals inside the distillation tower body; the two packing layers divide the distillation tower body into an upper cavity, a middle cavity, and a lower cavity from top to bottom;

[0009] The packing layer includes an upper mounting plate, a lower mounting plate, a connecting sleeve, and a packing; the upper mounting plate and the lower mounting plate are both provided with through holes; the connecting sleeve runs through the center of the upper mounting plate and the lower mounting plate, and its head and tail are respectively fixedly connected to the upper mounting plate and the lower mounting plate; the packing is filled between the upper mounting plate and the lower mounting plate;

[0010] A guide ring is fixed to the lower end surface of each lower mounting plate, and the guide ring is in the shape of a truncated cone with both the upper and lower end surfaces open; the diameter of the upper end surface of the guide ring is greater than the diameter of the lower end surface;

[0011] The rotating assembly includes a motor, a rotating shaft, an upper scraper, a middle scraper, a lower scraper, a gas distribution plate, and a stirring paddle; the upper end of the rotating shaft passes through the upper end surface of the distillation tower body and is rotatably connected to the upper end surface of the distillation tower body; the motor is connected to the upper end of the rotating shaft; the rotating shaft passes through the two packing layer connecting sleeves from bottom to top in sequence and then extends into the lower cavity; the gas distribution plate is evenly distributed with gas distribution holes;

[0012] The upper scraper is arranged in the upper cavity and is located below the spray assembly; the upper scraper is fixedly arranged on the right side of the rotating shaft through a connecting rod, and the upper scraper contacts the inner wall of the upper cavity; the middle scraper is arranged in the middle cavity, and the middle scraper is arranged on the left side of the rotating shaft through a connecting rod, and the middle scraper contacts the side wall of the middle cavity; the air distribution plate is arranged in the lower cavity and is fixedly connected to the rotating shaft; the installation position of the air distribution plate is higher than the installation position of the air inlet pipe; the lower scraper is arranged below the air distribution plate and is fixedly arranged on the right side of the rotating shaft through a connecting rod; the lower scraper contacts the inner wall of the lower cavity; a stirring paddle is fixedly arranged on the rotating shaft at the lower part of the lower scraper.

[0013] Preferably, the installation position of the liquid inlet pipe is lower than the installation position of the air inlet pipe; the inner diameter of the connecting sleeve matches the outer diameter of the rotating shaft, and the rotating shaft can rotate smoothly in the connecting sleeve; the outer diameter of the gas distribution plate matches the inner diameter of the distillation tower body, and the gas distribution plate can rotate inside the distillation tower body.

[0014] The provision of the guide ring of the utility model facilitates the guidance of the liquid phase flowing downward through the outer ring of the packing layer to prevent it from flowing downward along the inner wall of the distillation tower body, which can increase the contact between the liquid phase and the gas phase and further improve the efficiency of distillation.

[0015] The rotating assembly of the utility model can rotate during the distillation process, driving the upper scraper, the middle scraper and the lower scraper to rotate and scrape the inner wall of the corresponding distillation tower to prevent impurities from accumulating into large pieces; during the scraping process, the impurity particles that exist are relatively small and can fall into the lower cavity with the liquid phase, without forming large impurities to cause blockage inside the distillation tower.

[0016] The gas distribution plate of the utility model plays the role of gas distribution; the incoming gas phase needs to pass through the gas distribution plate before continuing upward, and can be more evenly distributed inside the distillation tower body, and further prolongs the contact time between the gas phase and the liquid phase in the distillation tower, thereby improving the efficiency of the distillation tower.

[0017] Preferably, an auxiliary scraper is fixedly provided on the right side of the upper end surface of the air distribution plate, and the right side of the auxiliary scraper is in contact with the inner wall of the lower cavity.

[0018] Preferably, a truncated cone-shaped guide platform is provided at the bottom of the distillation tower; the tail of the rotating shaft is rotatably connected to the guide platform; and the discharge pipe is provided on the left side of the guide platform.

[0019] The setting of the guide platform can guide the liquid phase in the lower cavity to prevent the liquid phase accumulated at the bottom from being unable to be discharged.

[0020] Preferably, it also includes an air distribution plate cleaning assembly; the air distribution plate cleaning assembly includes a cleaning brush, a support plate, a plurality of guide rods, and a limit nut; the air distribution plate cleaning assembly is arranged on the right side below the air distribution plate; the support plate is fixedly connected to the right inner wall of the lower cavity; the bristles of the cleaning brush face upward, and a plurality of guide rods are fixed in sequence from left to right on the lower end surface of the brush plate of the cleaning brush; the tail of the guide rod passes through the support plate and is threadedly connected to the limit nut; a spring is provided on the guide rod located between the brush plate and the support plate.

[0021] The bristles of the cleaning brush are in contact with the air distribution plate, and under the action of the spring, the bristles of the cleaning brush are squeezed toward the air distribution plate, so that the air distribution plate can be cleaned during the rotation of the air distribution plate, thereby avoiding clogging of the air distribution plate during the distillation process and affecting the distillation process.

[0022] Preferably, the spray assembly includes several annular tubes of different diameters; the several annular tubes are arranged in sequence from the inside to the outside, and the several annular tubes are connected by connecting branch pipes; nozzles are provided on the lower end faces of the annular tubes; adjacent annular tubes are fixedly connected by support rods; and the head of the connecting pipe is connected to the outermost annular tube.

[0023] The spray assembly is arranged to be composed of a plurality of ring tubes, which can meet the requirement of uniform spraying while not affecting the rotation of the shaft.

[0024] The distillation tower body involved in the present invention is a distillation tower commonly used in the art, and its structure and operation method are well known to those skilled in the art. The distillation tower body may also involve conventional components such as a condensation component and a reboiler component, all of which can be installed and connected to the distillation tower body using existing technologies, and there are components on the distillation tower body that can be connected to them, which are all existing technologies and will not be further described here.

[0025] The materials of the various components of the utility model can be selected from commonly used materials in the prior art according to the environment in which they are located. For example, the materials of the various components inside the distillation tower body need not react with the chemical substances in the distillation process, and can be used safely under the temperature requirements if there are temperature requirements. This selection is a conventional selection in the prior art and will not be further described in detail here.

[0026] Components not limited in the present invention all adopt conventional means in the field. Those skilled in the art can select their models and installation methods according to actual usage requirements and clearly understand how to install and control them, which will not be described in detail here.

[0027] The utility model achieves the following beneficial effects:

[0028] The utility model has a simple structure and is easy to operate. The setting of the guide ring of the utility model reduces the downward flow of the liquid phase along the inner wall of the distillation tower body, increases the contact between the liquid phase and the gas phase, and helps to improve the efficiency of distillation. The setting of the rotating assembly facilitates the scraping of the inner wall of the distillation tower body to prevent solid impurities existing in the distillation process from adhering to the inner wall of the distillation tower body. The gas distribution plate plays a role in distributing gas, so that the gas phase is more evenly distributed inside the distillation tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0030] Figure 2 for Figure 1 Bottom view of the middle spray assembly;

[0031] Figure 3 for Figure 1 A partial cross-sectional view along line EE;

[0032] Figure 4 for Figure 1 Enlarged view of point F in the middle.

[0033] In the figure: 1. distillation tower body; 2. exhaust pipe; 3. drain pipe; 4. air inlet pipe; 5. liquid inlet pipe; 6. connecting pipe; 7. upper cavity; 8. middle cavity; 9. lower cavity; 10. upper mounting plate; 11. lower mounting plate; 12. connecting sleeve; 13. filler; 14. through hole; 15. guide ring; 16. motor; 17. rotating shaft; 18. upper scraper; 19. middle scraper; 20. lower scraper; 21. air distribution plate; 22. stirring paddle; 23. air distribution hole; 24. connecting rod; 25. auxiliary scraper; 26. guide platform; 27. support plate; 28. guide rod; 29. ​​limit nut; 30. bristles; 31. brush plate; 32. spring; 33. ring pipe; 34. connecting branch pipe; 35. nozzle; 36. support rod; 37. auxiliary connecting rod. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0035] Example 1

[0036] like Figures 1 to 4 As shown, a high-efficiency distillation tower comprises a distillation tower body 1, an exhaust pipe 2 is arranged on the upper end surface of the distillation tower body, a liquid discharge pipe 3 is arranged on the lower end surface of the distillation tower body, an air inlet pipe 4 and a liquid inlet pipe 5 are arranged on the left side of the distillation tower body; a packing layer is arranged inside the distillation tower body; a spray assembly is arranged on the upper side of the inside of the distillation tower body; the spray assembly is connected to the bottom of the distillation tower body through a connecting pipe 6; and a rotating assembly is also included;

[0037] There are two packing layers, which are arranged at intervals inside the distillation tower body; the two packing layers divide the distillation tower body into an upper cavity 7, a middle cavity 8, and a lower cavity 9 from top to bottom;

[0038] The packing layer includes an upper mounting plate 10, a lower mounting plate 11, a connecting sleeve 12, and a packing 13; both the upper mounting plate and the lower mounting plate are provided with a through hole 14; the connecting sleeve runs through the center of the upper mounting plate and the lower mounting plate, and its head and tail are fixedly connected to the upper mounting plate and the lower mounting plate respectively; the packing is filled between the upper mounting plate and the lower mounting plate;

[0039] A guide ring 15 is fixed to the lower end surface of each lower mounting plate. The guide ring is in the shape of a truncated cone with both the upper and lower end surfaces open. The diameter of the upper end surface of the guide ring is greater than the diameter of the lower end surface.

[0040] The rotating assembly includes a motor 16, a rotating shaft 17, an upper scraper 18, a middle scraper 19, a lower scraper 20, an air distribution plate 21, and a stirring paddle 22; the upper end of the rotating shaft passes through the upper end surface of the distillation tower body and is rotatably connected to the upper end surface of the distillation tower body; the motor is connected to the upper end of the rotating shaft; the rotating shaft passes through the two packing layer connecting sleeves from bottom to top in sequence and then extends into the lower cavity; the air distribution plate is evenly distributed with air distribution holes 23;

[0041] The upper scraper is arranged in the upper cavity and is located below the spray assembly; the upper scraper is fixedly arranged on the right side of the rotating shaft through a connecting rod 24, and the upper scraper contacts the inner side wall of the upper cavity; the middle scraper is arranged in the middle cavity, and the middle scraper is arranged on the left side of the rotating shaft through a connecting rod, and the middle scraper contacts the side wall of the middle cavity; the air distribution plate is arranged in the lower cavity and is fixedly connected to the rotating shaft; the installation position of the air distribution plate is higher than the installation position of the air inlet pipe; the lower scraper is arranged below the air distribution plate and is fixedly arranged on the right side of the rotating shaft through a connecting rod; the lower scraper contacts the inner side wall of the lower cavity; a stirring paddle is fixedly arranged on the rotating shaft at the lower part of the lower scraper.

[0042] The installation position of the liquid inlet pipe is lower than that of the gas inlet pipe; the inner diameter of the connecting sleeve matches the outer diameter of the rotating shaft, and the rotating shaft can rotate smoothly in the connecting sleeve; the outer diameter of the gas distribution plate matches the inner diameter of the distillation tower body, and the gas distribution plate can rotate inside the distillation tower body.

[0043] An auxiliary scraper 25 is fixedly provided on the right side of the upper end surface of the air distribution plate, and the right side of the auxiliary scraper is in contact with the inner wall of the lower cavity.

[0044] A truncated cone-shaped guide platform 26 is provided at the bottom of the distillation tower; the tail of the rotating shaft is rotatably connected to the guide platform; and a liquid discharge pipe is provided on the left side of the guide platform.

[0045] It also includes an air distribution plate cleaning assembly; the air distribution plate cleaning assembly includes a cleaning brush, a support plate 27, seven guide rods 28, and a limit nut 29; the air distribution plate cleaning assembly is arranged on the right side below the air distribution plate; the support plate is fixedly connected to the right inner wall of the lower cavity; the bristles 30 of the cleaning brush face upward, and the seven guide rods are fixed on the lower end surface of the brush plate 31 of the cleaning brush in sequence from left to right; the tail of the guide rod passes through the support plate and is threadedly connected to the limit nut; a spring 32 is sleeved on the guide rod located between the brush plate and the support plate.

[0046] The spray assembly includes three annular tubes 33 of different diameters; the three annular tubes are arranged in sequence from the inside to the outside, and are connected by connecting branches 34; nozzles 35 are arranged on the lower end faces of the annular tubes; adjacent annular tubes are fixedly connected by support rods 36; the head of the connecting pipe is connected to the outermost annular tube.

[0047] The outermost annular tube is fixedly connected to the inner wall of the distillation tower body through a plurality of auxiliary connecting rods 37 .

[0048] When the utility model is in use, the gas phase enters the interior of the distillation tower body from the gas inlet pipe, and the liquid phase enters the interior of the distillation tower body from the liquid inlet pipe. During the distillation process, the liquid phase enters the spray assembly through the connecting pipe to start spraying (the drive of the liquid phase in the connecting pipe selects the existing technology, such as a pump can be used to drive the liquid phase to flow in the connecting pipe). After passing through the gas distribution plate, the gas phase rises inside the distillation tower body and contacts the liquid phase. During the distillation process, the rotating assembly rotates to scrape the inner side wall of the distillation tower body.

[0049] The technical solution of the present utility model is not limited to the above-mentioned specific embodiments, and all technical variations made according to the technical solution of the present utility model fall within the protection scope of the present utility model.

Claims

1. An efficient distillation tower, comprising a distillation tower body, an exhaust pipe is arranged on the upper end surface of the distillation tower body, a liquid discharge pipe is arranged on the lower end surface of the distillation tower body, an air inlet pipe and a liquid inlet pipe are arranged on the left side of the distillation tower body; a packing layer is arranged inside the distillation tower body; a spray assembly is arranged on the upper side of the inside of the distillation tower body; the spray assembly is connected to the bottom of the distillation tower body through a connecting pipe; characterized in that: Also included is a rotating assembly; There are two packing layers, which are arranged at intervals inside the distillation tower body; the two packing layers divide the distillation tower body into an upper cavity, a middle cavity, and a lower cavity from top to bottom; The packing layer includes an upper mounting plate, a lower mounting plate, a connecting sleeve, and a packing; the upper mounting plate and the lower mounting plate are both provided with through holes; the connecting sleeve runs through the center of the upper mounting plate and the lower mounting plate, and its head and tail are respectively fixedly connected to the upper mounting plate and the lower mounting plate; the packing is filled between the upper mounting plate and the lower mounting plate; A guide ring is fixed to the lower end surface of each lower mounting plate, and the guide ring is in the shape of a truncated cone with both the upper and lower end surfaces open; the diameter of the upper end surface of the guide ring is greater than the diameter of the lower end surface; The rotating assembly includes a motor, a rotating shaft, an upper scraper, a middle scraper, a lower scraper, a gas distribution plate, and a stirring paddle; the upper end of the rotating shaft passes through the upper end surface of the distillation tower body and is rotatably connected to the upper end surface of the distillation tower body; the motor is connected to the upper end of the rotating shaft; the rotating shaft passes through the two packing layer connecting sleeves from bottom to top in sequence and then extends into the lower cavity; the gas distribution plate is evenly distributed with gas distribution holes; The upper scraper is arranged in the upper cavity and is located below the spray assembly; the upper scraper is fixedly arranged on the right side of the rotating shaft through a connecting rod, and the upper scraper contacts the inner wall of the upper cavity; the middle scraper is arranged in the middle cavity, and the middle scraper is arranged on the left side of the rotating shaft through a connecting rod, and the middle scraper contacts the side wall of the middle cavity; the air distribution plate is arranged in the lower cavity and is fixedly connected to the rotating shaft; the installation position of the air distribution plate is higher than the installation position of the air inlet pipe; the lower scraper is arranged below the air distribution plate and is fixedly arranged on the right side of the rotating shaft through a connecting rod; the lower scraper contacts the inner wall of the lower cavity; a stirring paddle is fixedly arranged on the rotating shaft below the lower scraper.

2. A high-efficiency distillation tower according to claim 1, characterized in that: An auxiliary scraper is fixedly arranged on the right side of the upper end surface of the air distribution plate, and the right side of the auxiliary scraper is in contact with the inner wall of the lower cavity.

3. A high-efficiency distillation tower according to claim 2, characterized in that: A truncated cone-shaped guide platform is arranged at the bottom of the distillation tower; the tail of the rotating shaft is rotatably connected with the guide platform; and a liquid discharge pipe is arranged on the left side of the guide platform.

4. A high-efficiency distillation tower according to claim 3, characterized in that: It also includes an air distribution plate cleaning assembly; the air distribution plate cleaning assembly includes a cleaning brush, a support plate, multiple guide rods, and a limit nut; the air distribution plate cleaning assembly is arranged on the right side below the air distribution plate; the support plate is fixedly connected to the right inner wall of the lower cavity; the bristles of the cleaning brush face upward, and multiple guide rods are fixed on the lower end surface of the brush plate of the cleaning brush from left to right in sequence; the tail of the guide rod passes through the support plate and is threadedly connected to the limit nut; a spring is sleeved on the guide rod located between the brush plate and the support plate.

Images