Potassium methoxide production precipitate impurity removal system

Abstract

The application discloses a precipitating and impurity removing system for potassium methoxide production, which comprises a precipitation tank, a clean water overflow port is arranged on one side of the precipitation tank close to the top end, a liquid inlet and a dosing port are arranged on the other side of the precipitation tank, the height of the dosing port is higher than that of the liquid inlet, and a blowdown port is arranged at the bottom end of the precipitation tank; a mixing mechanism and an inclined plate precipitation mechanism are arranged in the precipitation tank; and the mixing mechanism comprises a mixing lifting disc. The material flow channel is designed to flow in from the bottom and flow out from the top, the whole process of feeding, mixing reaction, precipitation separation and overflow discharge is integrated in a single precipitation tank, the continuous impurity removing production of the potassium methoxide crude product can be realized, and the production efficiency is improved compared with the traditional intermittent precipitation process; in cooperation with the efficient solid-liquid separation effect of the inclined plate precipitation mechanism and the uniform overflow design of the annular overflow weir, the potassium hydroxide, potassium carbonate, heavy metal ions and mechanical impurities in the crude product can be efficiently removed, and the clarity and purity of the discharged potassium methoxide solution are ensured.

Description

Technical Field

[0001] This invention relates to the field of potassium methoxide production technology, and in particular to a precipitation and impurity removal system for potassium methoxide production. Background Technology

[0002] Potassium methoxide is a core organic base and strong base catalyst widely used in pharmaceutical synthesis, pesticide preparation, biodiesel production and electronic chemicals. High-end applications have stringent purity requirements, necessitating the deep removal of residual potassium hydroxide, potassium carbonate, heavy metal ions and mechanical impurities from the crude product. Precipitation is currently the mainstream impurity removal process in the industry.

[0003] Existing precipitation and impurity removal devices for potassium methoxide production have several core defects:

[0004] 1. The mixing reaction and sedimentation separation processes are separated, and the production is mostly intermittent with low continuity. The built-in stirring structure has mixing dead zones, which easily leads to uneven mixing and incomplete sedimentation reaction. Moreover, stirring disturbance can easily cause the sedimentation layer to surge, resulting in mud in the product and unstable impurity removal effect.

[0005] 2. Inclined plate sedimentation structures are mostly fixed installations, which are prone to sludge accumulation and blockage. They also require shutdown and cleaning, which not only interrupts production but also causes potassium methoxide to hydrolyze and become unusable due to the infiltration of external moisture.

[0006] 3. The dynamic sealing structure with built-in agitator is prone to wear and failure, posing a risk of combustion and explosion due to methanol vapor leakage. At the same time, highly alkaline materials can easily corrode the drive components inside the tank, resulting in a high equipment failure rate and short continuous operation cycle. Summary of the Invention

[0007] To address the problems mentioned in the background section, this invention provides a precipitation and impurity removal system for potassium methoxide production.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A precipitation and impurity removal system for potassium methoxide production includes a precipitation tank. A clear water overflow outlet is provided on one side of the precipitation tank near the top, and a liquid inlet and a chemical dosing outlet are provided on the other side of the precipitation tank. The height of the chemical dosing outlet is greater than the height of the liquid inlet, and a sludge discharge outlet is provided at the bottom of the precipitation tank.

[0010] The sedimentation tank is equipped with a mixing mechanism and an inclined plate sedimentation mechanism inside;

[0011] The mixing mechanism includes a mixing lifting plate, which has multiple through holes.

[0012] The inclined plate sedimentation mechanism includes multiple inclined plates arranged parallel to each other;

[0013] The dosing port is located above the mixing lifting plate, and the liquid inlet is located below the inclined plate.

[0014] Preferably, the sedimentation tank has an annular overflow weir near the top, and the annular overflow weir is connected to the clear water overflow port.

[0015] Preferably, a liquid distributor is connected to one end of the liquid inlet and the dosing port that extends into the interior of the sedimentation tank.

[0016] Preferably, the mixing lifting plate has multiple strip-shaped passage openings, each corresponding to an inclined plate, which is rotatably mounted inside the sedimentation tank via a rotating shaft.

[0017] Preferably, one end of the rotating shaft extends to the outside of the sedimentation tank and is fixed with a gear. A horizontal slide rail bracket is fixed on the outer wall of the sedimentation tank, and a rack is slidably installed at the bottom end of the horizontal slide rail bracket. Multiple gears mesh with the rack.

[0018] Preferably, a horizontally arranged cylinder is fixed to the top of the horizontal slide rail bracket, and the output shaft of the cylinder is fixed to the rack.

[0019] Preferably, three magnets A are fixed on the outer periphery of the mixing lifting plate, and a vertical slide groove is provided on the inside of the sedimentation tank for the magnets A to slide up and down, and the top and bottom of the vertical slide groove are chamfered.

[0020] Preferably, magnet B is provided on the outer wall of the sedimentation tank at a position corresponding to magnet A. The three magnets B are connected and fixed by an arc strip. A threaded sleeve is fixed on magnet B. Three vertically arranged threaded rods are rotatably installed on the outer wall of the sedimentation tank. The three threaded sleeves are respectively installed on the outside of the three threaded rods, and the threaded rods are driven by servo motors. The three servo motors keep synchronized.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention integrates the entire process of feeding, mixing reaction, precipitation separation, and overflow discharge within a single sedimentation tank through a bottom-in, top-out material flow channel design. This enables continuous impurity removal production of crude potassium methoxide, improving production efficiency compared to traditional intermittent sedimentation processes. Combined with the efficient solid-liquid separation of the inclined plate sedimentation mechanism and the uniform overflow design of the annular overflow weir, it can efficiently remove potassium hydroxide, potassium carbonate, heavy metal ions, and mechanical impurities from the crude product, ensuring the clarity and purity of the discharged potassium methoxide solution.

[0023] 2. This invention utilizes a reciprocating lifting and lowering mixing plate structure. During the lifting and lowering process, the through holes and openings of the plate body create turbulent disturbance throughout the tank, completely eliminating dead zones in the mixing of materials inside the tank. Combined with the liquid distributors at the inlet and dosing port, it achieves initial uniform dispersion and full contact between the material to be treated and the precipitating agent, significantly shortening the reaction time and avoiding the problems of agent waste and impurity residue caused by uneven mixing.

[0024] 3. The inclined plate of the present invention can achieve synchronous angle adjustment through a gear and rack transmission mechanism. Under normal production conditions, it maintains an inclined state, providing sufficient settling channels and adsorption surfaces for sedimentation particles, ensuring solid-liquid separation effect. Under cleaning conditions, it can be rotated to a vertical state to form an unobstructed straight-through cleaning channel. Combined with the full-stroke reciprocating lifting and rinsing of the mixing lifting plate, it can complete the cleaning of the entire area of ​​the inclined plate surface, the inner wall of the tank, and the mixing mechanism without stopping the machine or opening the cover to disassemble the equipment, thus avoiding the decrease in sedimentation efficiency caused by mud accumulation on the plate.

[0025] 4. The tilt angle of the inclined plate of the present invention can be precisely and steplessly adjusted by a cylinder, and can be flexibly adjusted according to the impurity content and processing flow rate of the feed material: under high impurity conditions, the tilt angle is adjusted to a smaller angle to prolong the material residence time and enhance the sedimentation and separation effect; under high flow conditions, the tilt angle is adjusted to a larger angle to accelerate the sliding speed of the sedimented particles and reduce the system operating pressure drop; at the same time, the lifting speed and lifting stroke of the mixing lifting plate can be precisely controlled by a servo motor, which can adapt to the mixing needs of different reaction stages. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of the sedimentation tank of the present invention;

[0028] Figure 2 This is a front view of the sedimentation tank of the present invention;

[0029] Figure 3 This is a three-dimensional sectional view of the sedimentation tank of the present invention;

[0030] Figure 4 This is a front-view sectional view of the sedimentation tank of the present invention;

[0031] Figure 5 This is a schematic diagram showing the cooperation relationship between the hybrid lifting plate and the inclined plate of the present invention;

[0032] Figure 6This is a three-dimensional schematic diagram of the inclined plate driving structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the inclined plate driving structure of the present invention from a front view.

[0034] In the diagram: 1. Sedimentation tank; 101. Drain outlet; 102. Clear water overflow outlet; 103. Chemical dosing port; 104. Liquid inlet; 105. Liquid distributor; 106. Annular overflow weir; 2. Inclined plate; 201. Rotating shaft; 202. Gear; 3. Mixing lifting plate; 301. Opening; 302. Magnet A; 303. Through hole; 305. Magnet B; 306. Threaded sleeve; 307. Threaded rod; 308. Servo motor; 4. Horizontal slide rail bracket; 401. Rack; 402. Cylinder. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example

[0037] Reference Figure 1-7 A precipitation and impurity removal system for potassium methoxide production includes a precipitation tank 1, which is a vertical, closed tank structure. A clear water overflow port 102 is located near the top on one side of the precipitation tank 1 to discharge the supernatant high-purity potassium methoxide solution after precipitation and impurity removal. An inlet 104 and a dosing port 103 are located on the other side of the precipitation tank 1. The height of the dosing port 103 is greater than the height of the inlet 104, forming a bottom-up material flow path to ensure sufficient contact and reaction between the crude material and the precipitating agent. The bottom of the precipitation tank 1 is a conical structure, with a drain port 101 at the center of the conical bottom for discharging the precipitated impurities, sludge, and cleaning waste liquid.

[0038] The sedimentation tank 1 is equipped with a mixing mechanism and an inclined plate sedimentation mechanism. The mixing mechanism is used to achieve uniform mixing of the crude potassium methoxide to be treated with the precipitating agent, and to promote the precipitation reaction of impurities. The inclined plate sedimentation mechanism is used to achieve efficient separation of solid and liquid phases and accelerate the sedimentation and enrichment of precipitated particles.

[0039] The mixing mechanism includes a mixing lifting plate 3, which is a circular plate structure with an outer diameter that is fitted with the inner diameter of the sedimentation tank 1. Multiple through holes 303 are evenly opened on the mixing lifting plate 3 to allow the material in the tank to flow up and down while forming turbulent disturbances during the lifting process, thereby enhancing the mixing effect of the material.

[0040] The inclined plate sedimentation mechanism includes multiple parallel inclined plates 2. The plate surfaces are hydrophobic to prevent sediment particles from adhering to the plate surfaces and to provide sufficient channels for sediment particles to settle.

[0041] The dosing port 103 is located above the mixing lifting plate 3, and the precipitating agent can be directly added to the upper area of ​​the mixing lifting plate 3. The liquid inlet 104 is located below the inclined plate 2. The crude potassium methoxide material to be treated enters from the bottom of the tank, forming a bottom-up flow path. The material first passes through the pre-distribution of the inclined plate 2, then enters the mixing area to fully react with the agent, and finally is discharged from the top overflow port after sedimentation and separation by the inclined plate. This realizes the continuous operation of the entire process of feeding-mixing reaction-sedimentation separation-discharge.

[0042] An annular overflow weir 106 is provided inside the sedimentation tank 1 near the top. The annular overflow weir 106 is connected to the clear water overflow port 102. The height of the top of the annular overflow weir 106 is consistent, which can ensure the uniform overflow of the supernatant in the sedimentation tank 1 and avoid the problem of mud in the supernatant caused by local flow deviation. At the same time, it can prevent the floating scum on the liquid surface from entering the overflow port and ensure the clarity of the discharged potassium methoxide solution.

[0043] Both the liquid inlet 104 and the dosing port 103 are connected to a liquid distributor 105 at one end extending into the sedimentation tank 1. The liquid distributor 105 associated with the liquid inlet 104 is arranged circumferentially along the inner wall of the sedimentation tank 1, which can uniformly feed the crude potassium methoxide material to be treated into the tank and avoid the sediment layer from churning due to the impact of feeding. The liquid distributor 105 associated with the dosing port 103 can uniformly spray the precipitating agent on the cross-section inside the tank, ensuring the initial uniform dispersion of the agent and the material and improving the mixing reaction efficiency.

[0044] The mixing lifting plate 3 has multiple strip-shaped openings 301, the width of which is greater than the thickness of the inclined plate 2. The openings 301 correspond one-to-one with the inclined plates 2. The inclined plates 2 are rotatably installed in the sedimentation tank 1 via a rotating shaft 201. The inclined plates 2 can rotate synchronously with the rotating shaft 201 and rotate freely within an adjustable angle range, thus switching between inclined and vertical states. When it is necessary to clean the surface of the inclined plates 2, the inclined plates 2 are rotated to the vertical state. During the lifting and lowering process of the mixing lifting plate 3, the inclined plates 2 can pass through the openings 301, avoiding obstruction of the lifting and lowering stroke of the mixing lifting plate 3. This ensures that the mixing lifting plate 3 can reciprocate within the full height range of the inclined plates 2, achieving uniform mixing of materials in the entire tank and enabling cleaning of the surface of the inclined plates 2.

[0045] One end of the rotating shaft 201 extends to the outside of the sedimentation tank 1 and is fixed with a gear 202. The rotating shaft 201 and the tank body of the sedimentation tank 1 are sealed by a mechanical seal to prevent methanol vapor leakage and external moisture infiltration, thus avoiding the hydrolysis of potassium methoxide in water. A horizontal slide rail bracket 4 is fixed on the outer wall of the sedimentation tank 1. A rack 401 is slidably installed at the bottom of the horizontal slide rail bracket 4 via a slider. Multiple gears 202 mesh with the rack 401. When the rack 401 moves horizontally, it can synchronously drive all gears 202 to rotate, which in turn drives all inclined plates 2 to rotate synchronously through the rotating shaft 201, realizing the synchronous adjustment of the angle of all inclined plates 2, ensuring that the inclined plates always remain parallel, and avoiding angular deviations that affect the sedimentation effect.

[0046] A horizontally positioned cylinder 402 is fixed at the top of the horizontal slide rail bracket 4. The output shaft of the cylinder 402 is fixedly connected to the end of the rack 401. The extension and retraction stroke of the cylinder 402 can be precisely controlled. The extension and retraction of the output shaft of the cylinder 402 drives the rack 401 to move horizontally, thereby precisely controlling the rotation angle of the inclined plate 2 to adapt to the operating requirements of different working conditions.

[0047] Three magnets A302 are fixed at equal intervals around the outer periphery of the mixing lifting plate 3. A vertical slide groove is provided on the inner wall of the sedimentation tank 1 for the magnets A302 to slide up and down. The vertical slide groove can radially limit the magnets A302 to prevent the mixing lifting plate 3 from rotating circumferentially. The top and bottom of the vertical slide groove are chamfered so that solid impurities can be pushed out from the top and bottom of the vertical slide groove when the magnets A302 are raised and lowered, thus preventing jamming during the raising and lowering of the magnets A302. The magnets A302 and the mixing lifting plate 3 are fixedly connected by a corrosion-resistant bracket to isolate the magnets from corrosion by the strongly alkaline materials in the tank.

[0048] Magnets B305 are installed on the outer wall of sedimentation tank 1 at positions corresponding to magnet A302. Magnets B305 and A302 have opposite magnetic poles facing each other, achieving non-contact transmission through magnetic attraction. This completely avoids the risks of dynamic seal leakage, material corrosion, and flammability / explosion associated with installing a lifting drive mechanism inside the tank. The three magnets B305 are connected and fixed by arc-shaped strips, forming a synchronously lifting annular drive frame. Threaded sleeves 306 are fixed to magnets B305. Three vertically arranged threaded rods 307 are rotatably installed on the outer wall of sedimentation tank 1. The three threaded sleeves 306 are respectively threaded onto the outside of the three threaded rods 307, and the bottom ends of the threaded rods 307 are all connected to the output shaft of servo motors 308 via couplings. The three servo motors 308 are kept in synchronous rotation by a controller. The servo motors 308 can precisely control the number of rotations and the direction of rotation, thereby precisely controlling the lifting height and speed of magnets B305. Ultimately, the mixing lifting plate 3 is driven by magnetic attraction. It performs synchronized reciprocating lifting and lowering motion inside the tank.

[0049] The system workflow and operation steps in this embodiment

[0050] This embodiment is applied to a continuous production line for high-purity potassium methoxide. The material to be processed is crude potassium methoxide in methanol solution. The main impurities are potassium hydroxide, potassium carbonate, heavy metal ions, and mechanical impurities. The specific operating steps are as follows:

[0051] Step 1: System Initialization and Feed Preparation

[0052] The control system is activated, and the control cylinder 402 drives the rack 401 to move. Through the gear 202 and the rotating shaft 201, the inclined plate 2 is rotated to the preset tilt angle. The state of the cylinder 402 is locked, and the initial angle setting of the inclined plate sedimentation is completed. At the same time, the servo motor 308 is started to rotate synchronously, driving the magnet B305 to move to the middle position of the sedimentation tank 1. Through magnetic adsorption, the mixing lifting plate 3 is driven to move synchronously to the initial position in the middle of the tank, and the initialization of the mixing mechanism is completed.

[0053] The crude potassium methoxide material to be treated is introduced into the sedimentation tank 1 through the inlet 104. After being evenly dispersed by the liquid distributor 105, the material enters the tank. When the liquid level in the tank rises to the top height of the inclined plate 2, the methanol-prepared precipitation agent is introduced into the tank through the dosing port 103. The agent is evenly sprayed into the material through the liquid distributor 105. Feeding continues until the liquid level in the tank reaches the top height of the annular overflow weir 106, at which point feeding stops.

[0054] Step 2: Operation under mixed reaction conditions

[0055] The servo motor 308 is started, controlling the three threaded rods 307 to rotate synchronously in both directions, driving the magnet B305 to reciprocate vertically. Through the magnetic attraction between magnet A302 and magnet B305, the mixing lifting plate 3 is driven to reciprocate synchronously within the tank. During the lifting process of the mixing lifting plate 3, the material inside the tank flows up and down through the through hole 303 and the opening 301, forming strong turbulent disturbances. This allows the crude potassium methoxide material to fully mix and contact with the precipitating agent, promoting the chelation and precipitation reaction of impurity ions with the precipitating agent to fully proceed, generating insoluble impurity precipitate particles.

[0056] During the mixing reaction, the lifting speed and stroke of the mixing lifting plate 3 can be adjusted by the servo motor 308 according to the reaction of the materials. At this time, the inclined plate 2 remains tilted and the lifting plate 3 moves within the range above the inclined plate 2. After the reaction is completed, the servo motor 308 is stopped, the mixing lifting plate 3 is reset to the initial position, and the settling stage begins.

[0057] Step 3: Precipitation Separation and Continuous Operation

[0058] After settling, most of the impurity particles settle to the conical area at the bottom of the tank, initiating a continuous feeding and discharging process: crude potassium methoxide to be treated is continuously fed into the tank through inlet 104. The material flows from bottom to top, and when passing through the inclined plate 2 area, the remaining tiny precipitate particles in the material collide, are adsorbed, and settle on the surface of the inclined plate 2, sliding down the inclined plate surface to the bottom of the tank, achieving efficient solid-liquid separation. The supernatant high-purity potassium methoxide solution after sedimentation and impurity removal overflows evenly through the annular overflow weir 106 and is continuously discharged from the clear water overflow port 102, entering the subsequent refining process.

[0059] During continuous operation, the tilt angle of the inclined plate 2 can be precisely adjusted by cylinder 402 according to the impurity content of the feed material and the clarity of the supernatant: when the impurity content in the material is high, the angle between the inclined plate 2 and the horizontal plane is reduced to prolong the residence time of the material between the inclined plates and enhance the sedimentation separation effect; when the feed flow rate is increased and the system pressure drop needs to be reduced, the angle between the inclined plate 2 and the horizontal plane is increased to accelerate the sliding speed of the sedimented particles, avoid the accumulation of mud on the plate, and ensure the stability of continuous operation.

[0060] Step 4: Sludge Removal and Online Cleaning Operation

[0061] When the system runs continuously for a preset period, or when the sludge at the bottom of the tank accumulates to a set height, the sludge discharge and online cleaning operation is performed: First, the feeding and discharging are stopped, the drain port 101 is opened, and the sludge accumulated at the bottom of the tank is quickly discharged. After the sludge discharge is completed, the drain port 101 is closed. Then, the cylinder 402 is controlled to drive the rack 401 to move through its full stroke. The gear 202 drives the inclined plate 2 to swing back and forth. The back and forth swing of the inclined plate shakes off the sediment sludge adhering to the plate surface. At the same time, the mixing lifting plate 3 can be raised and lowered to the area above the inclined plate. The water flow is formed by the lifting and turbulence to further clean the sludge on the plate surface.

[0062] After cleaning the inclined plate surface, the control cylinder 402 drives the inclined plate 2 to rotate to a vertical position. At this time, all the inclined plates 2 are parallel to each other and arranged vertically, forming an unobstructed straight-through cleaning channel inside the tank. Then, the servo motor 308 is started to drive the mixing lifting plate 3 to reciprocate up and down throughout its entire stroke inside the tank. In conjunction with the cleaning nozzles set on the top of the tank, anhydrous methanol cleaning liquid is introduced to clean the inner wall of the tank, the inclined plate surface, and the mixing lifting plate 3 in a thorough and thorough manner. The waste liquid generated during cleaning is discharged through the drain port 101 and recycled to the methanol distillation system for reuse, with no additional waste liquid generated.

[0063] After cleaning, control the inclined plate 2 to return to its initial tilt state, and then restart the system to enter the next round of continuous sedimentation and impurity removal operation. The entire sludge discharge and cleaning process does not require opening the cover or stopping the equipment for disassembly, which completely avoids the problem of potassium methoxide hydrolysis caused by the entry of external air and moisture into the tank, ensuring product quality and long-term stable operation of the system.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precipitation and impurity removal system for potassium methoxide production, comprising a precipitation tank (1), characterized in that: The sedimentation tank (1) has a clear water overflow port (102) near the top on one side, and an inlet (104) and a dosing port (103) on the other side. The height of the dosing port (103) is greater than the height of the inlet (104), and a drain port (101) is provided at the bottom of the sedimentation tank (1). The sedimentation tank (1) is equipped with a mixing mechanism and an inclined plate sedimentation mechanism inside; The mixing mechanism includes a mixing lifting plate (3), and the mixing lifting plate (3) has multiple through holes (303). The inclined plate sedimentation mechanism includes multiple inclined plates (2) arranged in parallel to each other. The dosing port (103) is located above the mixing lifting plate (3), and the liquid inlet (104) is located below the inclined plate (2).

2. The precipitation and impurity removal system for potassium methoxide production according to claim 1, characterized in that: The sedimentation tank (1) is provided with an annular overflow weir (106) near the top, and the annular overflow weir (106) is connected to the clear water overflow port (102).

3. The precipitation and impurity removal system for potassium methoxide production according to claim 1, characterized in that: The liquid inlet (104) and the dosing port (103) extend into the interior of the sedimentation tank (1) and are connected to a liquid distributor (105).

4. The precipitation and impurity removal system for potassium methoxide production according to claim 1, characterized in that: The mixing lifting plate (3) has multiple strip-shaped through openings (301), and the openings (301) correspond one-to-one with the inclined plate (2). The inclined plate (2) is rotatably installed in the sedimentation tank (1) through the rotating shaft (201).

5. A precipitation and impurity removal system for potassium methoxide production according to claim 4, characterized in that: One end of the rotating shaft (201) extends to the outside of the sedimentation tank (1) and is fixed with a gear (202). A horizontal slide rail bracket (4) is fixed on the outer wall of the sedimentation tank (1). A rack (401) is slidably installed at the bottom of the horizontal slide rail bracket (4). Multiple gears (202) mesh with the rack (401).

6. A precipitation and impurity removal system for potassium methoxide production according to claim 5, characterized in that: The top of the horizontal slide rail bracket (4) is fixed with a horizontally arranged cylinder (402), and the output shaft of the cylinder (402) is fixed with the rack (401).

7. A precipitation and impurity removal system for potassium methoxide production according to claim 5, characterized in that: The outer periphery of the mixing lifting plate (3) is fixed with three magnets A (302). The interior of the sedimentation tank (1) is provided with a vertical slide groove for the magnets A (302) to slide up and down, and the top and bottom of the vertical slide groove are chamfered.

8. A precipitation and impurity removal system for potassium methoxide production according to claim 7, characterized in that: On the outer wall of the sedimentation tank (1), a magnet B (305) is provided at a position corresponding to the magnet A (302). The three magnets B (305) are connected and fixed by an arc strip. A threaded sleeve (306) is fixed on the magnet B (305). Three vertically arranged threaded rods (307) are rotatably installed on the outer wall of the sedimentation tank (1). The three threaded sleeves (306) are respectively installed on the outside of the three threaded rods (307) with threads. The threaded rods (307) are driven by a servo motor (308). The three servo motors (308) keep synchronized.

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