A distillation tower for electron donor production

Abstract

The present invention belongs to the technical field of chemical distillation, and mainly relates to a distillation tower for electron donor production, including a tower body with a distillation chamber inside, a central axis and a distillation unit in the distillation chamber, and the distillation unit includes a transmission shaft, a sieve plate type tower plate, an adjustment plate and a gas gathering sleeve; the transmission shaft is arranged outside the central axis, the sieve plate type tower plate is fixed on the inner wall of the distillation chamber, the overflow end of the sieve plate type tower plate is connected with an overflow pipe, and a through hole is arranged on the sieve plate type tower plate; the adjustment plate is arranged below the corresponding sieve plate type tower plate, and is assembled in the distillation chamber by rotating around the axis of the central axis, and an adjustment hole is arranged on the adjustment plate; the gas gathering sleeve is arranged below the adjustment plate; an adjustment member is arranged in the gas gathering sleeve, and a first transmission structure is arranged between the transmission shaft and the adjustment member. When the gas flow rate is too small or too large, the first transmission structure drives the adjustment plate to rotate to adjust the overlapping area of ​​the through hole and the adjustment hole to prevent more leakage and reduce the phenomenon of liquid foam entrainment.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical distillation, and mainly relates to a distillation tower for electron donor production. Background Art

[0002] Electron donor is a chemical additive in a transparent liquid state. It is an electron-rich compound, namely Lewis base, which is added during the olefin polymerization process. The newly prepared electron donor usually contains by-products, unreacted raw materials and possible catalyst impurities. By distillation, the by-products, unreacted raw materials and possible catalyst impurities in the reaction can be removed to obtain a high-purity electron donor.

[0003] The distillation tower is one of the commonly used tools for distillation. It is a very important unit operation equipment in chemical engineering. It is mainly used for the separation of liquid-liquid or liquid-gas mixtures. Its basic principle is to use the difference in boiling points of the components in the mixture to achieve separation. It is used in scientific research, production and other fields, especially in chemical production, petroleum refining, food industry and other aspects.

[0004] The Chinese patent application document with application publication number CN113694555A discloses a blockage-proof distillation tower, which includes a tower body, a distillation chamber is provided inside the tower body, a plurality of sieve-plate trays are arranged staggered from top to bottom on the tower body, and a plurality of sieve-plate trays are provided with micro-vibration motors; a liquid inlet pipe is connected to the top of the tower body, a liquid outlet pipe is connected to the bottom of the tower body; an air inlet pipe is connected to the bottom of the tower body, and an air outlet pipe is connected to the top of the tower body. The application document uses a plurality of sieve-plate trays to make gas-liquid two-phases contact with each other multiple times in countercurrent, and performs efficient and high-quality distillation, and starts a micro-vibration motor to drive the sieve-plate tray to vibrate during the distillation process, and shakes off the impurity materials formed when the gas contacts the liquid through the sieve-plate tray, so that the impurities cannot be deposited, thereby effectively reducing the probability of blockage of the sieve-plate tray, and improving the distillation efficiency and distillation quality of the distillation tower.

[0005] This method can effectively reduce the probability of blockage of sieve plate tower plates. However, when the material concentration is high and the given air intake speed is constant, the material rising speed is too high, and the liquid will be entrained by the rising air flow to form liquid foam, and rise to the upper plate or be discharged from the top of the tower with the air flow. When the material concentration is low and the given air intake speed is constant, the material rising speed is too low, and the pressure of the gas speed is insufficient to support the liquid on the plate, causing the liquid to leak from the valve hole on the sieve plate tower plate. All of the above will affect the distillation quality and efficiency. Summary of the invention

[0006] The present invention provides a distillation tower for electron donor production to solve the problem in the prior art that different material concentrations affect distillation quality and efficiency.

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A distillation tower for electron donor production, comprising a tower body with a distillation chamber inside, a central axis and at least one distillation unit sleeved on the central axis in the distillation chamber, the distillation unit comprising a transmission shaft, a sieve plate, an adjustment plate and a gas gathering sleeve; the transmission shaft is coaxially arranged outside the central axis, the sieve plate passes through the central axis and is fixed on the inner wall of the distillation chamber, at least two sieve plates are arranged at equal intervals up and down to divide the distillation chamber into a plurality of chambers, an overflow pipe for connecting two adjacent chambers is connected to the overflow end of each sieve plate, and a plurality of rows of through holes evenly distributed along the circumferential direction of the sieve plate are provided on the sieve plate; each adjustment plate is arranged at the corresponding sieve plate Below, it is coaxially connected with the transmission shaft and is rotatably assembled around the axis of the central axis in the distillation chamber. The adjusting plate is provided with adjusting holes corresponding to the through holes one by one; the gas gathering sleeve is arranged below the bottommost adjusting plate for allowing gas to pass through; an adjusting member capable of closing and opening the barrel mouth of the gas gathering sleeve is provided in the gas gathering sleeve, and the adjusting member is movably assembled outside the central axis along the up and down directions. A first transmission structure for driving the transmission shaft to rotate is provided between the transmission shaft and the adjusting member, and the adjusting member realizes upward or downward movement under the pressure change of the high-temperature gas to drive each adjusting plate to rotate to adjust the area of ​​the overlapping area between the through hole and the corresponding adjusting hole in the up and down directions.

[0009] Beneficial effect: When the gas flow rate is unstable due to different material concentrations, the first transmission structure drives the adjustment plate to rotate to reduce or increase the area of ​​the overlapping region between the through hole and the corresponding adjustment hole in the vertical direction. Reducing the area of ​​the overlapping region between the through hole and the corresponding adjustment hole in the vertical direction can reduce liquid leakage and ensure normal contact and separation of the gas-liquid two phases in the distillation chamber; appropriately increasing the area of ​​the overlapping region between the through hole and the corresponding adjustment hole in the vertical direction can reduce the phenomenon of liquid foam entrainment, and increasing the aperture can reduce the flow rate of the gas when passing through the through hole, thereby reducing the formation and carrying out of droplets, and a larger aperture allows the formation of larger droplets. These large droplets are heavier than small droplets and are not easily carried out of the sieve plate by the gas, thereby ensuring the separation effect of the sieve plate.

[0010] Furthermore, the first transmission structure includes a pin fixed in the radial direction of the transmission shaft and a slot opened on the adjusting member and arranged obliquely, the pin and the slot are slidably assembled, and the adjusting member can push the pin and make it slide in the slot during the upward movement.

[0011] Beneficial effects: when the gas flow rate is too low, the adjusting part descends, the pin slides in the slot, and the adjusting plate rotates, so as to reduce the area of ​​the overlapping area between the through hole and the corresponding adjusting hole in the vertical direction, thereby preventing more liquid leakage; when the gas flow rate is too high, the adjusting part rises, the pin slides in the slot, and the adjusting plate reverses, so as to increase the area of ​​the overlapping area between the through hole and the corresponding adjusting hole in the vertical direction, thereby reducing the phenomenon of liquid foam entrainment. The overall structure self-regulates through the gas flow rate, does not require additional driving parts, has a simple structure, and saves costs.

[0012] Furthermore, a first support plate is provided on the central axis below the adjusting member, a first spring is provided between the first support plate and the adjusting member, the first spring is sleeved on the central axis and two ends of the first spring are respectively connected to the first support plate and the adjusting member.

[0013] Furthermore, the gas gathering sleeve includes an inverted frustum cone section, an intermediate cylindrical section and a regular frustum cone section connected together in sequence from top to bottom, the top of the inverted frustum cone section is connected to a flange connected to the cavity wall of the distillation chamber, the maximum outer diameter of the inverted frustum cone section is not less than the outer diameter of the adjustment plate, and the taper of the regular frustum cone section is less than the taper of the inverted frustum cone section; the adjustment member includes a first mounting plate and a second mounting plate arranged in parallel up and down and a sleeve vertically connected between the first mounting plate and the second mounting plate, the slot is provided on the sleeve, the outer diameter of the first mounting plate is greater than the minimum inner diameter of the inverted frustum cone section, and the outer diameter of the second mounting plate is less than the inner diameter of the intermediate cylindrical section. An air inlet pipe is provided at the bottom of the tower body, and the pipe mouth of the air inlet pipe faces the lower end opening of the gas gathering sleeve, which is used for gas to push the adjustment member upward.

[0014] Beneficial effects: the mouth of the air inlet pipe faces the lower opening of the gas gathering sleeve, the right frustum cone section is conducive to the gathering of all gases into the gas gathering sleeve for passage, the middle cylindrical section is conducive to the gas pushing the adjusting part to move upward, and the inverted frustum cone section is conducive to the gas being able to utilize all the through holes, thereby improving the utilization rate; the two mounting plates are conducive to the gas pushing the adjusting part to move upward.

[0015] Furthermore, the overflow pipe includes an arc plate that is adapted to the shape of the cavity wall of the distillation chamber and fixedly connected together, and a baffle that is slidably assembled with the arc plate up and down and contacts the two ends of the arc of the arc plate. An overflow cavity is enclosed between the baffle and the arc plate. The baffle contacts the overflow end of the sieve plate type tower plate, and the baffle is connected to a second transmission structure for driving it to move in the up and down directions.

[0016] Beneficial effect: When the material concentration is high and the gas flow rate is too high, the second transmission structure drives the baffle to move upward, increasing the height of the liquid on the sieve plate tray, so that the liquid pressure matches the thrust of the gas flow rate, preventing the liquid from being entrained by the rising airflow to form liquid foam, and rising with the airflow to the upper sieve plate tray or being discharged from the top of the tower. When the sieve plate tray needs to be cleaned, the second transmission structure drives the baffle to descend to connect the two adjacent chambers to facilitate the circulation of the cleaning liquid.

[0017] Furthermore, the second transmission structure includes a first drive motor and a transmission screw transmission-connected to the first drive motor, the baffle is provided with an ear plate portion threadedly connected to the transmission screw, the baffles located on the same side of each sieve-plate tower plate are commonly transmission-connected to the same transmission screw, the transmission screw is parallel to the transmission shaft and arranged at intervals, and the same transmission screw simultaneously passes through the corresponding overflow pipes located on the same side of each sieve-plate tower plate.

[0018] Beneficial effect: When the material concentration is high and the gas flow rate is too large, the first drive motor is driven, and at the same time the transmission screw rotates forward and the baffle moves upward to increase the height of the liquid on the sieve plate tower plate. The structure is simple and the operation is convenient. The baffles on the same side of each sieve plate tower plate are connected to the same transmission screw, which ensures the synchronization of the movement of each baffle and simplifies the structure for easy installation.

[0019] Furthermore, between the two upper and lower adjacent sieve plate tower plates, a buffer plate is movably installed along the up and down directions between the lower sieve plate tower plate and the cavity wall of the distillation chamber at a position corresponding to the overflow pipe of the upper sieve plate tower plate, and the buffer plate is provided with a limit plate that cooperates with the baffle plate; when the baffle plate continues to move downward after cooperating with the limit plate, it can push the buffer plate downward to connect the two adjacent chambers.

[0020] Beneficial effect: When liquid falls from the upper sieve plate tower plate, if there is no buffer plate, the liquid will directly impact the lower sieve plate tower plate, causing droplets to splash and affecting the separation efficiency of the sieve plate tower plate. The buffer plate can slow down the falling speed of the liquid, reduce the impact force and prevent droplets from splashing.

[0021] The buffer plate can provide an area where the falling droplets can aggregate to form larger droplets, which can reduce the liquid foam entrainment and improve the separation efficiency of the sieve plate. When the sieve plate needs to be cleaned, the baffle pushes the limit plate to move the buffer plate downward to connect the two adjacent chambers, which is convenient for the circulation of the cleaning liquid.

[0022] Furthermore, a second support plate is connected to the transmission screw between the buffer plate and the ear plate portion, the second support plate is provided with a washer sleeved on the transmission screw, a second spring is provided between the washer and the buffer plate, and both ends of the second spring are respectively connected to the buffer plate and the washer.

[0023] Beneficial effect: when the cleaning is finished or the gas flow rate becomes smaller, the first drive motor reverses, the transmission screw drives the baffle to move up, the pressure of the baffle on the limit plate disappears, and the second spring pushes the buffer plate to reset it, and the structure is simple.

[0024] Furthermore, two cleaning strips symmetrically about the central axis are provided on the central axis at positions in contact with the upper side of the sieve plate tower plate. The outer ends of the cleaning strips away from the central axis are located outside the outermost through holes, and a second drive motor is connected to the bottom of the central shaft. The second drive motor drives the cleaning strips to rotate to clean dirt on the sieve plate tower plate.

[0025] Beneficial effect: When a certain amount of dirt appears on the sieve plate tower plate, the sieve plate tower plate needs to be cleaned, the second drive motor rotates, and the central shaft rotates at the same time, and the cleaning strip rotates on the sieve plate tower plate to clean the dirt on the sieve plate tower plate, which is beneficial to the cleaning of the sieve plate tower plate.

[0026] Furthermore, the tower body is a split structure, including a base, a distillation cylinder and a top seat that are detachably connected together. The air inlet pipe is located on the base, and a liquid outlet pipe is also provided on the base. The distillation unit is located in the distillation cylinder, and an air outlet pipe and a liquid inlet pipe are provided on the top seat.

[0027] Beneficial effect: The tower body is a detachable split structure, which is convenient for installation and disassembly.

[0028] The beneficial effects of the present invention are as follows: when the material concentration is low and the gas flow rate is too small, the pressure of the gas velocity is insufficient to support the liquid on the sieve plate tower plate, and the first spring drives the adjusting member to descend, and then the adjusting plate rotates to reduce the area of ​​the overlapping region between the through hole and the corresponding adjusting hole in the vertical direction, so as to prevent more liquid leakage and ensure the normal contact and separation of the gas-liquid two phases in the distillation chamber; when the material concentration is high and the gas flow rate is too large, the first drive motor drives the transmission screw to rotate forward, and then the baffle moves upward to increase the height of the liquid on the sieve plate tower plate, so that the pressure of the liquid matches the thrust of the gas flow rate, and prevents the liquid from being entrained by the rising airflow to form liquid foam, and rising to the upper sieve plate of the tower plate or the liquid foam entrainment phenomenon discharged from the tower top with the airflow, and the adjusting plate can be driven to rotate by the first transmission structure to increase the area of ​​the overlapping region between the through hole and the corresponding adjusting hole in the vertical direction, and appropriately increasing the area of ​​the overlapping region between the through hole and the corresponding adjusting hole in the vertical direction can also reduce the phenomenon of liquid foam entrainment, and ensure the separation effect of the sieve plate tower plate. When the sieve plate type tower plate needs to be cleaned, the first drive motor drives the transmission screw to reverse, drives the baffle plate to descend to connect the two adjacent chambers, and at the same time the baffle plate presses the limit plate to make the buffer plate descend to connect the two chambers, turn on the second drive motor, and the second drive motor drives the central shaft to rotate, and then the cleaning strip on the central shaft cleans the sieve plate type tower plate, which facilitates the circulation of cleaning liquid during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 for Figure 1 Middle AA section view;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention without the rectification cylinder;

[0033] Figure 4 for Figure 3 The enlarged schematic diagram of point D in the middle;

[0034] Figure 5 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0035] Figure 6 It is a schematic diagram of the assembly of sieve plate type tower plate and regulating plate;

[0036] Figure 7It is a schematic diagram of the assembly of the adjusting member, the first spring and the transmission shaft;

[0037] Figure 8 It is a schematic diagram of the structure of the gas gathering sleeve;

[0038] Fig. 9 for Figure 3 The enlarged schematic diagram of the center C;

[0039] Fig.10 Schematic diagram of the overflow pipe structure.

[0040] Description of reference numerals:

[0041] 1. First drive motor; 2. Top seat; 3. Air outlet pipe; 4. Liquid inlet pipe; 5. Rectification cylinder; 6. Liquid outlet pipe; 7. Base; 8. Air inlet pipe; 9. Transmission screw; 10. Gas gathering sleeve; 11. Center axis; 12. Second drive motor; 13. Sieve plate tray; 14. Baffle; 15. Limit plate; 16. Buffer plate; 17. Second spring; 18. Ear plate; 19. Adjustment plate; 20. Adjustment hole; 2 1. Transmission shaft; 22. Card plate; 23. Washer; 24. First mounting plate; 25. Slot; 26. Latch; 27. Sleeve; 28. Second mounting plate; 29. ​​First spring; 30. Through hole; 31. Cleaning strip; 32. Flange; 33. Frustum cone section; 34. Middle cylindrical section; 35. Frustum cone section; 36. Second support plate; 37. First support plate; 38. Adjustment member; 39. Arc plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] Various non-limiting embodiments of the present invention are described in detail below. Any number of elements in the accompanying drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0044] Embodiment 1 of a distillation tower for electron donor production provided by the present invention:

[0045] like Figure 1 As shown, the distillation tower for electron donor production includes a tower body with a distillation chamber inside and two distillation units installed in the tower body.

[0046] The tower body is a split structure, including a base 7, a distillation cylinder 5 and a top seat 2 detachably connected together by fastening bolts, a liquid inlet pipe 4 and an air outlet pipe 3 are provided on the top seat 2, an air inlet pipe 8 and a liquid outlet pipe 6 are provided on the base 7, and the distillation unit is located in the distillation cylinder 5. A central axis 11 extending in the up-down direction is provided in the distillation chamber, and two distillation units are sleeved on the central axis 11, and the two distillation units have the same structure. In this embodiment, one of the distillation units is taken as an example for detailed description.

[0047] like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Fig. 9 As shown, the distillation unit includes a transmission shaft 21, a sieve plate tower plate 13, an adjustment plate 19, an overflow pipe, a buffer plate 16, an adjustment member 38, a gas gathering sleeve 10, a first drive structure and a second drive structure.

[0048] like Figure 2 , Figure 3 , Figure 6 and Fig. 9 As shown, the sieve plate type tower plate 13 passes through the central shaft 11 and is fixed on the inner wall of the distillation chamber. Three sieve plate type tower plates 13 are arranged at equal intervals above and below to divide the distillation chamber into multiple chambers for distillation. Four clamping plates 22 are arranged at equal intervals in the circumferential direction near the edge of the lower side of the sieve plate type tower plate 13. The clamping plates 22 are welded and fixed on the sieve plate type tower plate 13. The clamping plates 22 and the sieve plate type tower plate 13 form a clamping groove. Each sieve plate type tower plate 13 is provided with an adjustment plate 19. The three adjustment plates 19 are fixedly connected together by a transmission shaft 21. The adjustment plates 19 are rotatably assembled in the corresponding clamping grooves and the transmission shaft 21 is sleeved outside the central shaft 11. The rotation of the transmission shaft 21 can drive the adjustment plates 19 to rotate. The sieve plate type tower plate 13 is provided with eight rows of through holes 30 evenly distributed along its circumferential direction, and the adjustment plate 19 is provided with eight rows of adjustment holes 20 corresponding to the through holes 30 one by one. The adjustment plate 19 rotates to adjust the area of ​​the overlapping region between the through holes 30 and the corresponding adjustment holes 20 in the up and down directions.

[0049] like Figure 3 , Figure 8 and Fig. 9As shown, the gas gathering sleeve 10 is arranged on the lower side of the bottom adjustment plate 19 for allowing gas to pass through. The pipe mouth of the above-mentioned air inlet pipe 8 opens toward the lower end of the gas gathering sleeve 10. The gas gathering sleeve 10 includes an inverted conical cylinder section 33, an intermediate cylindrical section 34 and a right conical cylinder section 35 which are connected together from top to bottom. The taper of the right conical cylinder section 35 is smaller than the taper of the inverted conical cylinder section 33. The top of the inverted conical cylinder section 33 is connected to a circle of flange 32 fixedly connected to the cavity wall of the distillation chamber. The maximum outer diameter of the inverted conical cylinder section 33 is equal to the outer diameter of the adjustment plate 19. The gas gathering sleeve 10 can gather the high-temperature gas entering from the air inlet pipe 8 so that all the gas passes through the gas gathering sleeve 10 and moves upward.

[0050] like Figure 2 , Figure 3 and Figure 7 As shown, the adjusting member 38 is located inside the gas gathering sleeve 10, and the adjusting member 38 includes a first mounting plate 24 and a second mounting plate 28 arranged in parallel up and down, and a sleeve 27 vertically connected between the first mounting plate 24 and the second mounting plate 28. The outer diameter of the first mounting plate 24 is larger than the minimum inner diameter of the inverted cone section 33, and the outer diameter of the second mounting plate 28 is smaller than the inner diameter of the middle cylindrical section 34. The sleeve 27 is divided into two parts, an upper part and an lower part. The interior of the lower part of the sleeve 27 is provided with a slide groove extending in the axial direction. A slider adapted to the slide groove is provided on the central shaft 11. The slider and the slide groove slide in the axial direction of the central shaft 11. The upper part of the sleeve 27 is sleeved on the lower side of the transmission shaft 21. The upper part of the sleeve 27 is provided with two slots 25 symmetrically and obliquely arranged about the transmission shaft 21. The lower side of the transmission shaft 21 is provided with a latch 26 corresponding to the slot 25 one by one. The latch 26 is slidably assembled with the slot 25. The adjusting member 38 can push the latch 26 and make it slide in the slot 25 during the upward movement, that is, the adjusting member 38 can simultaneously push and drive the transmission shaft 21 and the adjusting plate 19 to rotate. The above-mentioned latch 26 and the slot 25 form a first transmission structure.

[0051] like Figure 2 and Figure 7 As shown, a first support plate 37 is provided on the central shaft 11 below the adjusting member 38, and a first spring 29 is provided between the first support plate 37 and the adjusting member 38. The first spring 29 is sleeved on the central shaft 11 and its two ends are respectively connected to the first support plate 37 and the adjusting member 38 for resetting the adjusting member 38.

[0052] like Figure 4 and Fig.10As shown, the overflow pipe is located at the overflow end of the sieve plate type tower plate 13, and the overflow pipe includes an arc plate 39 adapted to the shape of the cavity wall of the distillation chamber and fixedly connected together, and a baffle 14 slidably assembled with the arc plate 39 and in contact with the arc ends of the arc plate 39. An overflow cavity is enclosed between the baffle 14 and the arc plate 39 for liquid to flow from the upper sieve plate type tower plate 13 to the lower sieve plate type tower plate 13, and the baffle 14 is in contact with the overflow end of the sieve plate type tower plate 13 on the other side relative to the arc plate 39.

[0053] like Figure 3 , Figure 4 and Fig.10 As shown, the second transmission structure includes a first drive motor 1 and a transmission screw 9 transmission-connected to the first drive motor 1, an ear plate portion 18 threadedly connected to the transmission screw 9 is provided on the baffle 14, and each baffle 14 located on the same side of each sieve plate type tower plate 13 is commonly transmission-connected to the same transmission screw 9, the transmission screw 9 is parallel to the transmission shaft 21 and arranged at intervals, and the same transmission screw 9 simultaneously passes through the corresponding overflow pipe located on the same side of each sieve plate type tower plate 13, and the first drive motor 1 is started to drive the transmission screw 9 to rotate, and the transmission screw 9 drives the baffle 14 to move up and down to adjust the height of the liquid on the sieve plate type tower plate 13.

[0054] like Figure 3 , Figure 5 and Fig. 9 As shown, between two adjacent sieve plate trays 13, between the lower sieve plate tray 13 and the cavity wall of the distillation chamber, a buffer plate 16 is movably installed in the vertical direction at a position corresponding to the overflow pipe of the upper sieve plate tray 13, and the buffer plate 16 is provided with a limit plate 15 that cooperates with the baffle plate 14. After the baffle plate 14 cooperates with the limit plate 15, when it continues to move downward, it can push the buffer plate 16 downward to connect the two adjacent chambers, so as to facilitate the circulation of the cleaning liquid. A second support plate 36 is fixedly connected to the transmission screw 9 between the buffer plate 16 and the ear plate 18, and a washer 23 is provided on the second support plate 36, which is sleeved on the transmission screw 9. A second spring 17 is provided between the washer 23 and the buffer plate 16, and the two ends of the second spring 17 are respectively fixedly connected to the buffer plate 16 and the washer 23 to reset the buffer plate 16.

[0055] like Figure 2 and Fig. 9 As shown, two cleaning strips 31 symmetrically about the central axis 11 are provided on the central axis 11 at a position in contact with the upper side of the sieve plate type tower plate 13, the outer end of the cleaning strip 31 away from the central axis 11 is located outside the outermost through hole 30, and a second drive motor 12 is connected to the bottom of the central axis 11, and the second drive motor 12 drives the cleaning strip 31 to rotate back and forth to clean the dirt on the sieve plate type tower plate 13.

[0056] The working process of the present invention is as follows:

[0057] When the material concentration is low and the gas flow rate is too small, the pressure of the gas velocity is insufficient to support the liquid on the sieve plate tray 13, and the first spring 29 drives the adjusting member 38 to descend, and then the adjusting plate 19 rotates to reduce the area of ​​the overlapping area between the through hole 30 and the corresponding adjusting hole 20 in the vertical direction, so as to prevent more liquid leakage and ensure the normal contact and separation of the gas-liquid two phases in the distillation chamber; when the material concentration is high and the gas flow rate is too large, the first drive motor 1 drives the transmission screw 9 to rotate forward, and then the baffle 14 moves upward to increase the height of the liquid on the sieve plate tray 13, so that the pressure of the liquid matches the thrust of the gas flow rate, and prevents the liquid from being entrained by the rising airflow to form liquid foam, and rises to the upper sieve plate tray 13 or the liquid foam entrainment phenomenon discharged from the top of the tower together with the airflow, and the adjusting plate 19 can be driven to rotate by the first transmission structure to increase the area of ​​the overlapping area between the through hole 30 and the corresponding adjusting hole 20 in the vertical direction. Appropriately increasing the area of ​​the overlapping area between the through hole 30 and the corresponding adjusting hole 20 in the vertical direction can also reduce the phenomenon of liquid foam entrainment, and ensure the separation effect of the sieve plate tray 13. When the sieve plate type tower plate 13 needs to be cleaned, the first drive motor 1 drives the transmission screw 9 to reverse, drives the baffle 14 to descend to connect the two adjacent chambers, and at the same time the baffle 14 presses the limit plate 15 to make the buffer plate 16 descend to connect the two chambers, turns on the second drive motor 12, and the second drive motor 12 drives the central shaft 11 to rotate, and then the cleaning strip 31 on the central shaft 11 cleans the sieve plate type tower plate 13.

[0058] Embodiment 2 of a distillation tower for electron donor production provided by the present invention:

[0059] The main difference between this embodiment and the first embodiment is that in the first embodiment, the adjusting member is reset by the first spring. In this embodiment, the first spring may be omitted, and the adjusting member can be reset by its own gravity.

[0060] Embodiment 3 of a distillation tower for electron donor production provided by the present invention:

[0061] The main difference between this embodiment and the first embodiment is that in the first embodiment, the first transmission mechanism includes a first drive motor and a transmission screw connected to the first drive motor. In this embodiment, a cylinder may be connected to each baffle plate and buffer plate.

[0062] Embodiment 4 of a distillation tower for electron donor production provided by the present invention:

[0063] The main difference between this embodiment and Example 1 is that in Example 1, two distillation units are provided. In this embodiment, the number of distillation units can be selected according to actual needs as long as the distillation effect is guaranteed. For example, only one distillation unit is provided in this embodiment.

[0064] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0065] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A distillation tower for electron donor production, comprising a tower body with a distillation chamber inside, characterized in that: A central shaft and at least one distillation unit sleeved on the central shaft are provided in the distillation chamber, and the distillation unit includes a transmission shaft, a sieve plate tower plate, an adjustment plate and a gas gathering sleeve; the transmission shaft is coaxially arranged outside the central shaft, the sieve plate tower plate passes through the central shaft and is fixed on the inner wall of the distillation chamber, at least two sieve plate tower plates are arranged at equal intervals up and down to divide the distillation chamber into a plurality of chambers, and an overflow pipe for connecting two adjacent chambers is connected to the overflow end of each sieve plate tower plate, and a plurality of rows of through holes uniformly distributed along the circumferential direction thereof are provided on the sieve plate tower plate; each adjustment plate is arranged below the corresponding sieve plate tower plate, is coaxially connected to the transmission shaft, and is arranged around the central shaft The axis of the gas collecting sleeve is rotatably assembled in the distillation chamber, and the adjusting plate is provided with adjusting holes corresponding to the through holes one by one; the gas collecting sleeve is arranged below the adjusting plate at the bottom for gas to pass through; the gas collecting sleeve is provided with an adjusting member capable of closing and opening the barrel mouth of the gas collecting sleeve, and the adjusting member is movably assembled outside the central axis in the up-down direction, and a first transmission structure for driving the transmission shaft to rotate is provided between the transmission shaft and the adjusting member, and the adjusting member realizes upward or downward movement under the pressure change of the high-temperature gas to drive each adjusting plate to rotate through the first transmission structure to adjust the area of ​​the overlapping region between the through hole and the corresponding adjusting hole in the up-down direction; The first transmission structure includes a latch fixed in the radial direction of the transmission shaft and a slot provided on the adjusting member and arranged obliquely, the latch being slidably assembled with the slot, and the adjusting member being able to push the latch and make it slide in the slot during the upward movement; A first support plate is provided on the central shaft below the adjusting member, a first spring is provided between the first support plate and the adjusting member, the first spring is sleeved on the central shaft and two ends of the first spring are respectively connected to the first support plate and the adjusting member; The gas gathering sleeve comprises an inverted frustum cone section, an intermediate cylindrical section and a regular frustum cone section which are sequentially connected from top to bottom, the top of the inverted frustum cone section is connected to a flange connected to the cavity wall of the distillation cavity, the maximum outer diameter of the inverted frustum cone section is not less than the outer diameter of the adjustment plate, and the taper of the regular frustum cone section is less than the taper of the inverted frustum cone section; the adjustment member comprises a first mounting plate and a second mounting plate which are arranged in parallel up and down, and a sleeve which is vertically connected between the first mounting plate and the second mounting plate, the slot is provided on the sleeve, the outer diameter of the first mounting plate is greater than the minimum inner diameter of the inverted frustum cone section, the outer diameter of the second mounting plate is less than the inner diameter of the intermediate cylindrical section, an air inlet pipe is provided at the bottom of the tower body, and the pipe mouth of the air inlet pipe faces the lower end opening of the gas gathering sleeve; The tower body is a split structure, including a base, a distillation cylinder and a top seat that are detachably connected together, and the air inlet pipe is located on the base.

2. A distillation tower for electron donor production according to claim 1, characterized in that: The overflow pipe includes an arc plate that is adapted to the shape of the cavity wall of the distillation cavity and fixedly connected together, and a baffle that is slidably assembled with the arc plate up and down and contacts the arc ends of the arc plate. An overflow cavity is enclosed between the baffle and the arc plate. The baffle contacts the overflow end of the sieve plate tower plate, and the baffle is connected to a second transmission structure for driving it to move in the up and down directions.

3. A distillation tower for electron donor production according to claim 2, characterized in that: The second transmission structure includes a first drive motor and a transmission screw transmission-connected to the first drive motor, an ear plate portion is provided on the baffle plate and is threadedly connected to the transmission screw, and each baffle plate located on the same side of each sieve plate-type tower plate is commonly transmission-connected to the same transmission screw, the transmission screw is parallel to the transmission shaft and is arranged at intervals, and the same transmission screw simultaneously passes through the corresponding overflow pipe located on the same side of each sieve plate-type tower plate.

4. A distillation tower for electron donor production according to claim 3, characterized in that: Between two upper and lower adjacent sieve plate tower plates, a buffer plate is movably installed along the up and down direction between the lower sieve plate tower plate and the cavity wall of the distillation chamber at a position corresponding to the overflow pipe of the upper sieve plate tower plate, and the buffer plate is provided with a limit plate that cooperates with the baffle plate; when the baffle plate continues to move downward after cooperating with the limit plate, it can push the buffer plate downward to connect the two adjacent chambers.

5. A distillation tower for electron donor production according to claim 4, characterized in that: A second support plate is connected to the transmission screw between the buffer plate and the ear plate portion, a washer is provided on the second support plate and sleeved on the transmission screw, a second spring is provided between the washer and the buffer plate, and two ends of the second spring are respectively connected to the buffer plate and the washer.

6. A distillation tower for electron donor production according to any one of claims 1 to 5, characterized in that: Two cleaning strips symmetrically about the central axis are provided on the central axis at positions in contact with the upper side of the sieve plate tower plate. The outer ends of the cleaning strips away from the central axis are located outside the outermost through holes, and a second drive motor is connected to the bottom of the central axis. The second drive motor drives the cleaning strips to rotate to clean dirt on the sieve plate tower plate.

7. A distillation tower for electron donor production according to claim 1, characterized in that: The base is also provided with a liquid outlet pipe, the distillation unit is located in the distillation cylinder, and the top seat is provided with an air outlet pipe and a liquid inlet pipe.

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