A distillation column for fatty acid ester production

Abstract

This utility model discloses a distillation column for the manufacture of fatty acid esters, comprising a distillation column body and a column tray. The distillation column body includes a first column body, a second column body, and a fourth column body. An mounting plate is fixedly installed inside the second column body and is fixedly connected to the column tray. Several through holes are formed on the upper surface of the column tray. A first motor is fixedly installed on the upper surface of the column tray, and a screw is fixedly connected to the output end of the first motor. A lifting plate is installed on the circumferential side of the screw, and several adjusting blocks are provided on the upper surface of the lifting plate. The screw controls the up-and-down movement of the adjusting blocks, and the adjusting blocks are inserted into the through holes to adjust the diameter of the through holes. This utility model, by setting up a screw, a lifting plate, and adjusting blocks, allows the first motor to drive the screw to rotate, and the lifting plate to drive the adjusting blocks to move up and down, causing the adjusting blocks to insert into the through holes. By adjusting the different depths to which the adjusting blocks are inserted into the through holes, the size of the through holes can be adjusted, thereby avoiding problems such as flooding or leakage.

Description

Technical Field

[0001] This utility model belongs to the field of distillation column technology, and in particular relates to a distillation column for the production of fatty acid esters. Background Technology

[0002] The industrial production of fatty acid esters (such as biodiesel and plasticizer intermediates) is highly dependent on distillation processes, with the distillation column being the core equipment. Distillation columns are chemical equipment made from rare metals such as titanium and their alloys, possessing characteristics such as high strength, high toughness, high temperature resistance, corrosion resistance, and low specific gravity. Therefore, they are widely used in chemical, petrochemical, metallurgical, light industry, textile, alkali production, pharmaceutical, pesticide, electroplating, and electronics industries. Liquid flows downwards along the perforations on the trays, while gas rises upwards from below. The gas and liquid come into contact on the trays, thus performing a distillation operation on the liquid.

[0003] However, existing distillation column trays have the following drawbacks: due to the fixed pore size of the trays, the raw materials in fatty acid ester production often contain impurities such as fatty acid salts and tar, which are easily deposited on the fixed pore size trays to form a scale layer, resulting in a decrease in the tray opening rate and affecting the processing efficiency of the equipment. Furthermore, when the feed flow rate or composition changes, the fixed pore size is difficult to adjust, which can easily lead to flooding or leakage. To solve the above problems, a distillation column for fatty acid ester manufacturing is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a distillation column for the manufacture of fatty acid esters, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a distillation column for the manufacture of fatty acid esters, comprising a distillation column body and trays.

[0007] An mounting plate is fixedly installed inside the distillation column body. The mounting plate is fixedly connected to the column plate. Several through holes are opened on the upper surface of the column plate. A first motor is fixedly installed on the upper surface of the column plate. A screw is fixedly connected to the output end of the first motor. A lifting plate is installed on the circumferential side of the screw. Several adjusting blocks are provided on the upper surface of the lifting plate. The adjusting blocks are tapered and their diameter is adapted to the through holes. The screw controls the adjusting blocks to move up and down to adjust the size of the through holes.

[0008] The adjusting block has several axially distributed cleaning brushes fixedly connected to its peripheral side. The cleaning brushes are made of polytetrafluoroethylene. The adjusting block can adjust the size of the through hole while also cleaning the inside of the through hole.

[0009] Preferably, a rotating rod is fixedly connected to the bottom surface of the adjusting block, and a secondary gear is fixedly connected to the bottom end of the rotating rod. A second motor is fixedly installed on the bottom surface of the lifting plate, and a main gear is fixedly connected to the output end of the second motor. After the adjusting block is inserted into the through hole, the adjusting block drives the cleaning brush to rotate and clean the through hole.

[0010] Preferably, the position of the adjusting block corresponds to the position of the through hole.

[0011] Preferably, the distillation column body includes a first column body, a second column body, and a fourth column body, which are connected by bolts and sealing rings, and the column plate is fixedly installed in the second column body.

[0012] Preferably, the screw is rotatably connected to the tower plate, and the lifting plate is threadedly engaged with the screw.

[0013] Preferably, a plurality of limiting rods are fixedly connected to the bottom surface of the tower plate, and one end of the limiting rod passes through the lifting plate, and the lifting plate slides in cooperation with the limiting rod.

[0014] Preferably, the rotating rod is rotatably connected to the lifting plate, the main gear meshes with the auxiliary gear, and the multiple auxiliary gears mesh with each other.

[0015] Preferably, the adjusting block has several first openings on its peripheral side, a connecting plate is fixedly connected to the bottom of the adjusting block, a number of second openings are opened on the bottom surface of the connecting plate, a first cone plate and a second cone plate are fixedly installed inside the adjusting block, a turbulence column is fixedly connected to the upper surface of the connecting plate, and a guide vane is fixedly connected to the upper surface of the second cone plate. The guide vane is spirally arranged, and when the gas-liquid mixture flows through the guide vane, it forms a spiral upward or downward vortex trajectory, prolonging the residence time.

[0016] This utility model has the following beneficial effects:

[0017] This utility model has the function of adjusting the size of the through hole of the tray, so as to avoid the problem of reduced tray opening rate and liquid flooding or leakage. Specifically, it is achieved by setting a screw, a lifting plate and an adjusting block. The first motor drives the screw to rotate, the lifting plate drives the adjusting block to move up and down, and the adjusting block is inserted into the through hole. The size of the through hole is adjusted by adjusting the depth of the adjusting block inserted into the through hole, thereby avoiding the problem of liquid flooding or leakage.

[0018] This invention has the function of cleaning through holes to prevent them from becoming blocked. Specifically, it is achieved by setting up a cleaning brush and a rotating rod. When the adjusting block is inserted into the through hole, the second motor drives the main gear to rotate. The main gear, through the meshing between gears, causes the auxiliary gear to drive the rotating rod to rotate. The rotating rod further drives the adjusting block to rotate, so that the cleaning brush cleans the through hole and prevents the through hole from becoming blocked, thus affecting the processing efficiency of the equipment.

[0019] This invention has the effect of extending the gas-liquid mixing time and improving the gas-liquid mixing quality. Specifically, it is achieved by setting a guide vane, a turbulence column, and a first cone plate. The first cone plate and the upper part of the adjusting block form a conical guide groove to generate axial vortex. The guide vane is spirally arranged to enhance the radial mixing of gas and liquid. The turbulence column is honeycomb-shaped to extend the residence time of gas-liquid mixing and make it more complete.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the present invention in cross-section;

[0025] Figure 4 This is a schematic diagram of the structure of the tower plate of this utility model;

[0026] Figure 5 This is a schematic diagram of the bottom side structure of the tower plate of this utility model;

[0027] Figure 6 This is an exploded structural diagram of the tower plate of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the adjusting block of this utility model;

[0029] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure;

[0030] Figure 9 This is a schematic diagram of the exploded structure of the internal parts of the regulating block.

[0031] The components represented by each number in the attached diagram are listed below: 1. Distillation column body; 2. First column body; 3. Second column body; 4. Third column body; 5. Tower plate; 6. Through hole; 7. First motor; 8. Mounting plate; 9. Lifting plate; 10. Secondary gear; 11. Adjusting block; 12. Screw; 13. Limiting rod; 14. Second motor; 15. Main gear; 16. Cleaning brush; 17. Rotating rod; 18. First opening; 19. Second opening; 20. First cone plate; 21. Second cone plate; 22. Turbulence column; 23. Guide vane. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Example:

[0035] Please see Figures 1-9 As shown, this utility model is a distillation column for the manufacture of fatty acid esters, including a distillation column body 1 and a column plate 5. The column plate 5 provides a contact interface for rising vapor (gas phase) and descending liquid (liquid phase), and component transfer is achieved through diffusion, convection and other means. Highly volatile components are transferred from the liquid phase to the gas phase, while lowly volatile components remain in the liquid phase, thus gradually achieving separation. The distillation column body 1 includes a first column body 2, a second column body 3 and a fourth column body 4. The first column body 2, the second column body 3 and the fourth column body 4 are connected and sealed by bolts and sealing rings. The distillation column body 1 is multi-sectioned, which facilitates the disassembly of the distillation column body 1 and the internal maintenance of the distillation column body 1.

[0036] An mounting plate 8 is fixedly installed inside the second tower body 3. The mounting plate 8 is fixedly connected to the tower plate 5 by bolts. Several through holes 6 are opened on the upper surface of the tower plate 5. A first motor 7 is fixedly installed on the upper surface of the tower plate 5. The output end of the first motor 7 is fixedly connected to the screw 12 through the shaft. The first motor 7 is a waterproof motor. In the figure, not shown, wiring holes are opened on the periphery of the second tower body 3 for the first motor 7 and the second motor 14 to connect and run power. A sealing ring is provided at the wiring hole position for sealing the second tower body 3.

[0037] A screw 12 is fixedly connected to the output end of the first motor 7. The screw 12 is rotatably connected to the tower plate 5. A lifting plate 9 is installed on the circumferential side of the screw 12. The lifting plate 9 is threadedly engaged with the screw 12. Several adjusting blocks 11 are provided on the upper surface of the lifting plate 9. The position of the adjusting block 11 corresponds to the position of the through hole 6. The adjusting block 11 is tapered, and the diameter of the adjusting block 11 is adapted to the diameter of the through hole 6. The tapered angle of the adjusting block 11 is between 15 and 30 degrees. Its outer surface is provided with a wear-resistant coating. The inner wall of the through hole 6 is provided with a guide slope that matches the tapered shape to ensure that the diameter of the through hole 6 is smoothly transitioned when the adjusting block 11 moves up and down. Several limiting rods 13 are fixedly connected to the bottom surface of the tower plate 5. One end of the limiting rod 13 passes through the lifting plate 9. The lifting plate 9 and the limiting rod 13 are slidably engaged.

[0038] The screw 12 controls the up-and-down movement of the regulating block 11. When the regulating block 11 is inserted into the through hole 6, the upper part of the regulating block 11 blocks the through hole 6. The more the regulating block 11 is inserted, the smaller the size of the through hole 6; the less the regulating block 11 is inserted, the larger the size of the through hole 6. The regulating block 11 is inserted into the through hole 6 to adjust the size of the through hole 6. By changing the orifice size, the degree of turbulence and mass transfer rate of gas-liquid contact are controlled. High orifice size: increases the vapor rising speed and enhances gas-liquid mixing, suitable for processing volatile components or low viscosity materials; low orifice size: slows down the flow rate, prolongs the contact time, and improves the separation accuracy, suitable for separating heavy components or high boiling point materials. By adjusting the orifice size, the separation capacity of a single tray 5 is equivalently changed, and the overall stage efficiency of the tower is optimized.

[0039] The adjusting block 11 has several first openings 18 on its peripheral side. A connecting plate is fixedly connected to the bottom of the adjusting block 11 by bolts, facilitating the assembly of the internal parts of the adjusting block 11. The bottom surface of the connecting plate has several second openings 19. The first openings 18 and the second openings 19 are used for the flow of gas-liquid mixture. A first cone plate 20 and a second cone plate 21 are fixedly installed inside the adjusting block 11. Both the first cone plate 20 and the second cone plate 21 are fixedly connected to the adjusting block 11 by bolts. The upper surfaces of the first cone plate 20 and the second cone plate 21 are both provided with annular grooves. A turbulence column 22 is fixedly connected to the upper surface of the connecting plate. The turbulence column 22 is provided with multiple honeycomb grooves. The second cone plate 21... A guide vane 23 is fixedly connected to the upper surface. The guide vane 23 is spirally arranged. When the gas-liquid mixture flows through the guide vane 23, it forms a spiral upward or downward vortex trajectory, which prolongs the residence time. The first cone plate 20, the second cone plate 21 and the connecting plate divide the interior of the regulating block 11 into three-stage cavities. The first cone plate 20 and the upper part of the regulating block 11 form a conical guide groove, which generates axial vortex. A second-stage cavity is formed between the first cone plate 20 and the second cone plate 21, and the spiral guide vane 23 inside can enhance the radial mixing of gas and liquid. A third-stage cavity is formed between the connecting plate and the second cone plate 21, and the honeycomb turbulence column 22 inside prolongs the residence time of gas and liquid. The gas and liquid pass through the three-stage cavity in sequence, which gradually enhances the turbulence intensity and contact time.

[0040] A rotating rod 17 is fixedly connected to the bottom surface of the adjusting block 11. The rotating rod 17 is rotatably connected to the lifting plate 9. A secondary gear 10 is fixedly connected to the bottom end of the rotating rod 17. The secondary gear 10 and the adjusting block 11 are both fixedly connected to the rotating rod 17 by bolts. A second motor 14 is fixedly installed on the bottom surface of the lifting plate 9. A main gear 15 is fixedly connected to the output end of the second motor 14. The main gear 15 meshes with the secondary gear 10. Multiple secondary gears 10 mesh with each other. The second motor 14 is a waterproof motor. The second motor 14 drives the main gear 15 to rotate. The main gear 15 drives the secondary gear 10 meshing with it to rotate. The secondary gear 10 further meshes with the adjacent secondary gear 10, so that multiple rotating rods 17 rotate simultaneously, thereby driving the adjusting block 11 to rotate. Since the adjusting block 11 is inserted into the through hole 6, the cleaning brush 16 is naturally also in the through hole 6. When the adjusting block 11 rotates, it drives the cleaning brush 16 to rotate, cleaning the dirt in the through hole 6 and preventing the through hole 6 from becoming blocked.

[0041] Several cleaning brushes 16 are fixedly connected to the peripheral side of the adjusting block 11. The cleaning brushes 16 are made of polytetrafluoroethylene, which has corrosion resistance and extends the service life of the cleaning brushes 16. The cleaning brushes 16 are fixedly connected to the adjusting block 11 by bolts. After the adjusting block 11 is inserted into the through hole 6, the adjusting block 11 drives the cleaning brushes 16 to rotate and clean the through hole 6. When the cleaning brushes 16 are worn, the second tower body 3 can be disassembled and the cleaning brushes 16 can be disassembled and replaced regularly to prevent the cleaning brushes from becoming unable to clean.

[0042] Working principle:

[0043] In operation, the distillation column body 1 has a liquid inlet pipe and a gas inlet pipe on both sides for the entry of liquid and gas. During operation, the first motor 7 drives the screw 12 to rotate. When the screw 17 rotates in the forward direction, the lifting plate 9 moves upward, which in turn drives the adjusting block 11 to move upward, so that the adjusting block 11 is inserted into the through hole 6, adjusting the size of the through hole 6. The more the adjusting block 11 is inserted into the through hole 6, the smaller the diameter of the through hole 6. When the first motor 7 drives the screw 12 to rotate in the reverse direction, the lifting plate 9 moves downward, which in turn drives the adjusting block 11 downward, so that the adjusting block 11 is pulled out of the through hole 6. When the adjusting block 11 is completely pulled out of the through hole 6, the diameter of the through hole 6 reaches its maximum. When the gas-liquid mixture... After entering the regulating block 11 through the first opening 18 and the second opening 19, the gas passes through the primary cavity, which is a conical guide groove that generates axial vortex; it then passes through the secondary cavity, where the spiral guide vanes 23 enhance radial mixing; the honeycomb-shaped turbulence columns 22 in the tertiary cavity prolong the gas-liquid residence time. When the diameter of the through hole 6 is reduced, the cleaning brush 16 is located inside the through hole 6. The second motor 14 drives the main gear 15 to rotate, which in turn drives the secondary gear 10 to rotate. The secondary gear 10 then drives the other secondary gears 10 to rotate, and the secondary gears 10 further drive the regulating block 11 to rotate via the rotating rod 17. This causes the regulating block 11 to drive the cleaning brush 16 to rotate, scraping the inside of the through hole 6 to prevent dirt from clogging the through hole 6 and affecting the working efficiency of the equipment.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A distillation column for the production of fatty acid esters, comprising a distillation column body (1) and trays (5), characterized in that: An installation plate (8) is fixedly installed inside the body (1) of the distillation column. The installation plate (8) is fixedly connected to the column plate (5). Several through holes (6) are opened on the upper surface of the column plate (5). A first motor (7) is fixedly installed on the upper surface of the column plate (5). A screw (12) is fixedly connected to the output end of the first motor (7). A lifting plate (9) is installed on the circumferential side of the screw (12). The upper surface of the lifting plate (9) is provided with several adjusting blocks (11). The adjusting blocks (11) are tapered and their diameter is adapted to the through hole (6). The screw (12) controls the adjusting blocks (11) to move up and down to adjust the size of the through hole (6).

2. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The bottom surface of the adjusting block (11) is fixedly connected to a rotating rod (17), and the bottom end of the rotating rod (17) is fixedly connected to a secondary gear (10). The bottom surface of the lifting plate (9) is fixedly installed with a second motor (14), and the output end of the second motor (14) is fixedly connected to a main gear (15). Several axially distributed cleaning brushes (16) are fixedly connected to the peripheral side of the adjusting block (11). The cleaning brushes (16) are made of polytetrafluoroethylene. After the adjusting block (11) is inserted into the through hole (6), the adjusting block (11) drives the cleaning brushes (16) to rotate and clean the through hole (6).

3. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The position of the adjusting block (11) corresponds to the position of the through hole (6).

4. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The distillation column body (1) includes a first column body (2), a second column body (3) and a fourth column body (4). The first column body (2), the second column body (3) and the fourth column body (4) are connected by bolts and sealing rings. The column plate (5) is fixedly installed inside the second column body (3).

5. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The screw (12) is rotatably connected to the tower plate (5), and the lifting plate (9) is threadedly engaged with the screw (12).

6. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The bottom surface of the tower plate (5) is fixedly connected with several limiting rods (13), and one end of the limiting rod (13) passes through the lifting plate (9). The lifting plate (9) and the limiting rod (13) slide together.

7. A distillation column for the production of fatty acid esters according to claim 2, characterized in that, The rotating rod (17) is rotatably connected to the lifting plate (9), the main gear (15) meshes with the auxiliary gear (10), and the multiple auxiliary gears (10) mesh with each other.

8. A distillation column for the production of fatty acid esters according to claim 1, characterized in that, The adjusting block (11) has several first openings (18) on its peripheral side. A connecting plate is fixedly connected to the bottom of the adjusting block (11). Several second openings (19) are opened on the bottom surface of the connecting plate. A first cone plate (20) and a second cone plate (21) are fixedly installed inside the adjusting block (11). A turbulence column (22) is fixedly connected to the upper surface of the connecting plate. A guide plate (23) is fixedly connected to the upper surface of the second cone plate (21). The guide plate (23) is spirally arranged. When the gas-liquid mixture flows through the guide plate (23), it forms a spiral rising or falling vortex trajectory, which prolongs the residence time.

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