Automatically feedable potassium propionate process optimization device
Patent Information
- Application Number
- CN202522634676.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-12
AI Technical Summary
[0005]针对现有技术中，丙酸钾生产用反应釜底部中心区域流体流速过低导致物料混合不均及结晶堆积、固定式检测探头无法监测不同液位数据且在线清洗维护困难的问题，本实用新型旨在提供一种结构经过改良的、能够有效解决上述问题的可自动进料的丙酸钾工艺优化装置
[0015]1、本实用新型，通过设置锚式桨、推进式搅拌桨以及底部导流挡板的协同配合结构，解决了现有技术中反应釜底部中心区域容易产生流动死区导致物料混合不均及结晶堆积的问题，达到了消除釜底流动死区、在釜内形成强制轴向循环流动的效果，从而有效防止了反应产物在釜底沉淀，显著提升了丙酸钾合成反应的均匀性与生产效率。
Smart Images
Figure CN224912343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a potassium propionate process optimization device with automatic feeding capability. Background Technology
[0002] Potassium propionate is a widely used food and feed preservative. Its industrial production mainly adopts the liquid-phase neutralization method. The reaction process takes place inside the reactor. The uniformity of material mixing inside the reactor and the precision of process parameter control directly determine the final quality and production efficiency of potassium propionate products.
[0003] Traditional reactor stirring devices cannot simultaneously handle radial shear and axial circulation, resulting in excessively low fluid velocity in the central region at the bottom of the reactor. As the reaction progresses and the concentration increases, reaction product crystals gradually precipitate and accumulate at the bottom of the reactor, forming a dead flow zone. This dead flow zone leads to excessively high local reactant concentrations or incomplete reactions, severely affecting the uniformity of the potassium propionate product. At the same time, the online detection devices equipped in traditional reactors have limited functionality. The detection probes are fixedly installed on the side wall or top of the reactor at a specific height. Fixed probes can only obtain temperature and pH data at a single location, failing to comprehensively reflect the true reaction state of different liquid layers within the reactor. Furthermore, the fixed installation method makes it difficult to remove the probes from the liquid surface for online cleaning, and the accumulation of deposits on the probe surface causes data distortion.
[0004] Therefore, this invention proposes an automated feeding device for potassium propionate to address the shortcomings of existing technologies. Utility Model Content
[0005] In view of the problems in the prior art, such as the low fluid flow rate in the central area at the bottom of the reaction vessel for potassium propionate production leading to uneven material mixing and crystal accumulation, the inability of fixed detection probes to monitor different liquid level data, and the difficulty of online cleaning and maintenance, this utility model aims to provide a potassium propionate process optimization device with an improved structure that can effectively solve the above problems and can automatically feed.
[0006] This utility model provides an automated feeding potassium propionate process optimization device, comprising: an installation platform, and a reaction vessel and a solution storage tank fixedly connected to the upper surface of the installation platform. A metering pump is fixedly connected to the top of the solution storage tank. The input end of the metering pump is connected to the bottom of the inner side of the solution storage tank through a delivery pipe. The output end of the delivery pipe passes through the top of the reaction vessel and extends into the inner cavity of the reaction vessel. A mixing mechanism and a detection mechanism are provided at the reaction vessel. The mixing mechanism includes a motor fixedly connected to the top of the reaction vessel. The output end of the motor vertically downward passes through the top of the reaction vessel and is fixedly connected to a drive shaft. An anchor is fixedly connected to the bottom end of the drive shaft. The reactor has a propeller-type stirring paddle fixedly connected to the middle of the drive shaft, a baffle fixedly connected to the lower part of the inner wall of the reactor, a drain port connected to the bottom of the reactor, and a detection mechanism including a guide rod fixedly connected vertically inside the reactor, a slider slidably connected to the outside of the guide rod, a probe fixedly connected to the side of the slider, a fixed rod fixedly connected to the top of the slider, the inner side of the fixed rod slidably connected to the guide rod, the top of the fixed rod extending upward through the top of the reactor and fixedly connected to a connecting block, a fixed block fixedly connected to the outer wall of the reactor, an electric telescopic rod fixedly connected to the top of the fixed block, and the telescopic end of the electric telescopic rod fixedly connected to the connecting block.
[0007] Preferably, there are two solution storage tanks. The top of each solution storage tank is connected to a feed port, and the side wall of the solution storage tank is vertically embedded with an observation window. The observation window is used to observe the liquid level of the propionic acid solution or potassium hydroxide solution inside the solution storage tank, and the feed port is used to replenish the raw materials into the solution storage tank.
[0008] Preferably, the anchor paddle has a U-shaped structure, and the bottom and side contours of the anchor paddle are adapted to the shape of the bottom surface and inner wall of the reactor, respectively. The anchor paddle is used to scrape the inner wall of the reactor. The propulsion agitator contains several spiral blades and is used to generate axial thrust to push the material to the bottom of the reactor.
[0009] Preferably, the baffle has an annular plate structure, with its outer edge fixedly connected to the inner wall of the reactor. The surface of the baffle has several flow-guiding notches for fluid to pass through. The baffle is used to intercept and guide the fluid that diffuses through the bottom of the reactor to flow upward to form an axial circulation.
[0010] Preferably, the slider is sleeved on the outside of the guide rod, and there are two probes. The two probes are fixedly connected to the front and rear sides of the slider, respectively. One probe is used to detect temperature, and the other probe is used to detect acidity and alkalinity. The fixed rod and the guide rod are arranged parallel to each other.
[0011] Preferably, the fixing block is located on the upper part of the outer wall of the reactor, the electric telescopic rod is vertically fixed to the upper surface of the fixing block, the connecting block is set in a horizontal state, one end of the connecting block is fixedly connected to the top of the fixing rod, and the other end of the connecting block is fixedly connected to the top of the electric telescopic rod.
[0012] Preferably, a control box is fixedly connected to the upper surface of the mounting platform and located in front of the reactor. The control box is electrically connected to the motor, metering pump, electric telescopic rod and probe respectively. The control box is used to control the motor speed, metering pump delivery rate and electric telescopic rod extension and retraction.
[0013] Preferably, the top of the reactor has a first through hole for the liquid delivery pipe to pass through, a mounting hole for the drive shaft to pass through, and a second through hole for the fixing rod to pass through. A sealed bearing is provided between the drive shaft and the mounting hole, and a sealing ring is provided between the fixing rod and the second through hole.
[0014] This utility model has the following beneficial effects:
[0015] 1. This utility model, through the coordinated structure of an anchor-type paddle, a propeller-type stirring paddle, and a bottom guide baffle, solves the problem in the prior art where a flow dead zone easily forms in the central area at the bottom of the reactor, leading to uneven material mixing and crystal accumulation. It achieves the effect of eliminating the flow dead zone at the bottom of the reactor and forming a forced axial circulation within the reactor, thereby effectively preventing the reaction products from settling at the bottom of the reactor and significantly improving the uniformity and production efficiency of the potassium propionate synthesis reaction.
[0016] 2. This utility model solves the problems of fixed sensors being unable to acquire data on different liquid levels inside the reactor and the difficulty of online cleaning and maintenance in the prior art by setting up a lifting detection mechanism driven by an external electric telescopic rod and cooperating with an internal guide rod. It achieves the effect of real-time and flexible monitoring of temperature and pH values at different depths inside the reactor, providing more comprehensive data support for process optimization, and also facilitating the lifting of the probe above the liquid surface for cleaning and maintenance. Attached Figure Description
[0017] Figure 1 This is a perspective view of the potassium propionate process optimization device with automatic feeding proposed in this utility model.
[0018] Figure 2 This is a side view of the potassium propionate process optimization device with automatic feeding proposed in this utility model.
[0019] Figure 3 This is a partial structural cross-sectional view of the potassium propionate process optimization device with automatic feeding proposed in this utility model.
[0020] Figure 4 This is a partial structural exploded view of the detection mechanism of the potassium propionate process optimization device with automatic feeding proposed in this utility model.
[0021] Legend:
[0022] 1. Installation platform; 2. Mixing mechanism; 21. Reactor; 22. Motor; 23. Drive shaft; 24. Anchor paddle; 25. Propeller agitator; 26. Drain port; 27. Solution storage tank; 28. Feed port; 29. Observation window; 210. Metering pump; 211. Infusion pipe; 212. Baffle; 3. Detection mechanism; 31. Guide rod; 32. Slider; 33. Probe; 34. Fixing rod; 35. Connecting block; 36. Fixing block; 37. Electric telescopic rod; 4. Control box. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0024] Example:
[0025] Please refer to Figures 1 to 4 This utility model provides an automated feeding potassium propionate process optimization device, which aims to solve the problems of poor accuracy and danger of manual feeding in existing potassium propionate production equipment, the easy formation of a flow dead zone at the bottom center of the reactor 21 leading to crystal accumulation, and the inability of the fixed detection probe 33 to monitor different liquid level data and the difficulty of cleaning and maintenance.
[0026] Please refer to Figure 1 and Figure 2 The potassium propionate process optimization device with automatic feeding includes an installation platform 1, a reaction vessel 21 and two solution storage tanks 27 fixedly connected to the upper surface of the installation platform 1. The installation platform 1 serves as the supporting base of the process optimization device, the reaction vessel 21 serves as the main chemical reaction site, and the solution storage tanks 27 are used to store raw materials such as propionic acid solution and potassium hydroxide solution respectively. The top of the solution storage tank 27 is connected to a feeding port 28, through which raw materials are added to the solution storage tank 27. The side wall of the solution storage tank 27 is vertically embedded with an observation window 29, which is used to observe the liquid level of propionic acid solution or potassium hydroxide solution inside the solution storage tank 27 in real time so as to replenish the material in time. The top of the solution storage tank 27 is fixedly connected to a metering pump 210, and the input end of the metering pump 210 is connected to the bottom of the inner side of the solution storage tank 27 through a delivery pipe 211.
[0027] The output end of the infusion pipe 211 passes through the top of the reactor 21 and extends into the inner cavity of the reactor 21. When the metering pump 210 is started, the raw materials in the solution storage tank 27 can be accurately delivered to the reactor 21 through the infusion pipe 211 in proportion. The reactor 21 is equipped with a mixing mechanism 2 and a detection mechanism 3. The mixing mechanism 2 is mainly used to fully stir and mix the materials in the reactor. The mixing mechanism 2 includes a motor 22 fixedly connected to the top of the reactor 21. The output end of the motor 22 passes vertically downward through the top of the reactor 21 and is fixedly connected to a drive shaft 23. An anchor paddle 24 is fixedly connected to the bottom end of the drive shaft 23. The anchor paddle 24 has a U-shaped structure. The bottom contour and side contour of the anchor paddle 24 are adapted to the shape of the inner bottom surface and inner side wall of the reactor 21, respectively. When the anchor paddle 24 rotates with the drive shaft 23, it can scrape the inner wall of the reactor 21 to prevent the material from sticking to the wall or crystallizing.
[0028] A propeller-type stirring paddle 25 is fixedly connected to the middle of the drive shaft 23. The propeller-type stirring paddle 25 includes several spiral blades. When the propeller-type stirring paddle 25 rotates, it generates axial thrust to push the material from the top to the bottom of the reactor 21. A baffle 212 is fixedly connected to the lower part of the inner wall of the reactor 21. The baffle 212 has an annular plate structure. The outer edge of the baffle 212 is fixedly connected to the inner wall of the reactor 21. Several flow guide notches are opened on the surface of the baffle 212 to allow the fluid to pass through. The baffle 212 is used to intercept and guide the fluid diffused through the bottom of the reactor 21 to flow upward to form an axial circulation, thereby eliminating the dead zone at the bottom. A drain port 26 is connected to the bottom of the reactor 21. The drain port 26 is used to discharge the finished potassium propionate solution after the reaction is completed.
[0029] Please refer to Figure 3 and Figure 4 The detection mechanism 3 includes a guide rod 31 vertically fixed inside the reactor 21. The guide rod 31 serves as a guide reference for the movement of the detection probe 33. A slider 32 is slidably connected to the outside of the guide rod 31. The slider 32 is sleeved on the outside of the guide rod 31 and can slide up and down along the length of the guide rod 31. Two probes 33 are fixedly connected to the side of the slider 32. The two probes 33 are fixedly connected to the front and rear sides of the slider 32, respectively. One probe 33 is used to detect temperature, and the other probe 33 is used to detect acidity and alkalinity. A fixing rod 34 is fixedly connected to the top of the slider 32. A guide groove is provided on the inner side of the fixing rod 34. The fixing rod 34 is slidably connected to the guide rod 31 through the guide groove, and the fixing rod 34 and the guide rod 31 are arranged parallel to each other. The fixing rod 34 is used to transmit the external driving force to the slider 32 and at the same time ensure the stability of the slider 32 when it moves.
[0030] The top of the fixing rod 34 extends upward through the top of the reactor 21 and is fixedly connected to a connecting block 35. A second through hole is provided at the top of the reactor 21 for the fixing rod 34 to pass through. A sealing ring is provided between the fixing rod 34 and the second through hole to ensure the sealing of the reactor 21. The connecting block 35 is set horizontally. One end of the connecting block 35 is fixedly connected to the top of the fixing rod 34 by bolts, and the other end of the connecting block 35 is fixedly connected to the top of the electric telescopic rod 37 by bolts. The connecting block 35 is used to connect the internal fixing rod 34 to the external driving source. A fixing block 36 is fixedly connected to the upper part of the outer wall of the reactor 21. An electric telescopic rod 37 is fixedly connected to the top of the fixing block 36. The electric telescopic rod 37 is vertically fixed to the upper surface of the fixing block 36. The electric telescopic rod 37 serves as a driving source, driving the fixing rod 34 and the slider 32 to move up and down along the guide rod 31 through the connecting block 35, thereby changing the immersion depth of the probe 33 in the reactor 21.
[0031] As a preferred embodiment, in order to facilitate intuitive observation of raw material reserves and timely replenishment, the number of solution storage tanks 27 is set to two, which are used to store propionic acid solution and potassium hydroxide solution respectively. The top of the solution storage tank 27 is connected to the feed port 28, and the side wall of the solution storage tank 27 is vertically embedded with an observation window 29. The observation window 29 is made of transparent tempered glass and can clearly display the changes in the liquid level inside the solution storage tank 27.
[0032] As another preferred embodiment, in order to eliminate the flow dead zone in the central area of the bottom of the reactor 21 and enhance the flushing effect on the bottom to prevent material crystallization and accumulation, the baffle 212 adopts an annular plate structure. The outer edge of the baffle 212 is fixedly connected to the lower part of the inner wall of the reactor 21 by welding. The surface of the baffle 212 is provided with a number of flow guiding notches for fluid to pass through. The flow guiding notches are distributed in a rectangular array. When the propeller-type stirring paddle 25 pushes the fluid to the bottom of the reactor 21 and spreads it to the surroundings, the baffle 212 can intercept and guide the fluid to flow upward, thereby forming a forced axial circulation flow.
[0033] In another preferred embodiment, in order to achieve automated control and data acquisition of the reaction process, a control box 4 is fixedly connected to the upper surface of the mounting platform 1 and located in front of the reactor 21. The control box 4 integrates a PLC controller and related circuit components. The control box 4 is electrically connected to the motor 22, the metering pump 210, the electric telescopic rod 37 and the probe 33 respectively. The temperature and pH signals collected by the probe 33 are transmitted to the control box 4. The control box 4 controls the speed of the motor 22, the start and stop of the metering pump 210 and the delivery rate, and the extension and retraction of the electric telescopic rod 37 according to the feedback signals.
[0034] In another preferred embodiment, in order to ensure the sealing of the reactor 21 and prevent gas leakage during the reaction, the top of the reactor 21 is provided with a first through hole for the liquid delivery pipe 211 to pass through, a mounting hole for the drive shaft 23 to pass through, and a second through hole for the fixing rod 34 to pass through. A mechanical seal device is provided between the drive shaft 23 and the mounting hole, and a dynamic sealing ring is provided between the fixing rod 34 and the second through hole. The liquid delivery pipe 211 and the first through hole are sealed with sealant or flange.
[0035] Working principle:
[0036] Before starting the operation, check the observation window 29 to confirm that the raw materials in the solution storage tank 27 are sufficient. Start the metering pump 210 through the control box 4. The metering pump 210 accurately and quantitatively delivers the propionic acid solution and potassium hydroxide solution in the solution storage tank 27 to the reaction vessel 21 through the delivery pipe 211, realizing automatic proportional feeding of raw materials. After feeding is completed, start the motor 22. The motor 22 drives the anchor paddle 24 and the propeller agitator 25 to rotate synchronously through the drive shaft 23. The anchor paddle 24 rotates close to the inner wall and bottom of the reaction vessel 21, and prevents material adhesion and crystallization through scraping action. The propeller-type stirring paddle 25 generates a strong axial flow that pushes the material from the top to the bottom of the reactor 21. When the fluid hits the bottom of the reactor and spreads outwards, the baffle 212 fixed to the lower inner side of the reactor 21 intercepts and guides the spreading fluid, forcing the fluid to change direction and return upwards to the stirring zone from the opening of the baffle 212. This forms a forced axial circulation in the reactor 21, eliminating the dead zone in the center of the reactor bottom and enhancing the shearing and scouring effect on the reactor bottom surface. This prevents reactants or products from crystallizing and accumulating at the bottom of the reactor, ensuring the uniformity of the reaction.
[0037] During the reaction, the electric telescopic rod 37 is activated according to monitoring requirements. The electric telescopic rod 37 drives the fixed rod 34 to move up and down along the guide rod 31 through the connecting block 35. The movement of the fixed rod 34 synchronously drives the slider 32 and the two probes 33 installed on the slider 32 to move vertically, thereby changing the immersion depth of the probes 33 in the reactor 21. This allows the probes 33 to flexibly monitor the temperature and pH of different liquid layers or specific locations in the reactor 21. The data collected by the probes 33 is transmitted to the control box 4 in real time. The control box 4 automatically adjusts the process parameters according to the feedback signal. After the reaction is completed, if it is necessary to clean the probes 33, the electric telescopic rod 37 is controlled to retract upward, raising the probes 33 above the liquid surface for maintenance. Finally, the generated potassium propionate solution is discharged through the drain port 26 at the bottom of the reactor 21.
Claims
1. An automated feeding device for potassium propionate process optimization, comprising: The installation platform (1) includes a reaction vessel (21) and a solution storage tank (27) fixedly connected to the upper surface of the installation platform (1). A metering pump (210) is fixedly connected to the top of the solution storage tank (27). The input end of the metering pump (210) is connected to the bottom of the solution storage tank (27) through a delivery pipe (211). The output end of the delivery pipe (211) passes through the top of the reaction vessel (21) and extends to the inner cavity of the reaction vessel (21). A mixing mechanism (2) and a detection mechanism (3) are provided at the reaction vessel (21). The detection mechanism (3) is characterized in that it includes a guide rod (31) vertically fixedly connected inside the reactor (21), a slider (32) slidably connected to the outside of the guide rod (31), a probe (33) fixedly connected to the side of the slider (32), a fixing rod (34) fixedly connected to the top of the slider (32), a connecting block (35) fixedly connected to the top of the fixing rod (34) extending upward through the top of the reactor (21), a fixing block (36) fixedly connected to the outer wall of the reactor (21), and an electric telescopic rod (37) fixedly connected to the top of the fixing block (36).
2. The potassium propionate process optimization device with automatic feeding capability according to claim 1, characterized in that, The mixing mechanism (2) includes a motor (22) fixedly connected to the top of the reactor (21). The output end of the motor (22) extends vertically downward through the top of the reactor (21) and is fixedly connected to a drive shaft (23). An anchor paddle (24) is fixedly connected to the bottom end of the drive shaft (23). A propulsion stirring paddle (25) is fixedly connected to the middle of the drive shaft (23). A baffle (212) is fixedly connected to the lower part of the inner wall of the reactor (21). A drain port (26) is connected to the bottom of the reactor (21).
3. The potassium propionate process optimization device with automatic feeding capability according to claim 1, characterized in that, There are two solution storage tanks (27). The top of each solution storage tank (27) is connected to a feeding port (28), and the side wall of each solution storage tank (27) is vertically embedded with an observation window (29).
4. The potassium propionate process optimization device with automatic feeding capability according to claim 2, characterized in that, The anchor paddle (24) has a U-shaped structure. The bottom and side contours of the anchor paddle (24) are adapted to the shape of the inner bottom surface and inner side wall of the reactor (21). The anchor paddle (24) is used to scrape the inner wall of the reactor (21). The propulsion stirring paddle (25) contains several spiral blades.
5. The potassium propionate process optimization device with automatic feeding capability according to claim 2, characterized in that, The baffle (212) has an annular plate structure. The outer edge of the baffle (212) is fixedly connected to the inner wall of the reactor (21). The surface of the baffle (212) has several flow guide notches for fluid to pass through.
6. The potassium propionate process optimization device with automatic feeding capability according to claim 1, characterized in that, The slider (32) is sleeved on the outside of the guide rod (31). There are two probes (33). The two probes (33) are fixedly connected to the front and rear sides of the slider (32). One probe (33) is used to detect temperature, and the other probe (33) is used to detect acidity and alkalinity. The fixing rod (34) is set parallel to the guide rod (31).
7. The potassium propionate process optimization device with automatic feeding capability according to claim 1, characterized in that, The fixing block (36) is located on the upper part of the outer wall of the reactor (21). The electric telescopic rod (37) is vertically fixed on the upper surface of the fixing block (36). The connecting block (35) is set in a horizontal state. One end of the connecting block (35) is fixedly connected to the top of the fixing rod (34), and the other end of the connecting block (35) is fixedly connected to the top of the electric telescopic rod (37).
8. The potassium propionate process optimization device with automatic feeding capability according to claim 2, characterized in that, A control box (4) is fixedly connected to the upper surface of the installation platform (1) and to the front side of the reactor (21). The control box (4) is electrically connected to the motor (22), the metering pump (210), the electric telescopic rod (37) and the probe (33).
9. The potassium propionate process optimization device with automatic feeding capability according to claim 2, characterized in that, The reactor (21) has a first through hole for the infusion pipe (211) to pass through, a mounting hole for the drive shaft (23) to pass through, and a second through hole for the fixing rod (34) to pass through. A sealed bearing is provided between the drive shaft (23) and the mounting hole, and a sealing ring is provided between the fixing rod (34) and the second through hole.