Sodium acetate purification device

Abstract

The sodium acetate purification device comprises a reaction kettle, an evaporative crystallization device, a centrifugal separation device and a drying device which are sequentially communicated and connected, the reaction kettle comprises a reaction kettle body, a sealing cover is detachably connected to an opening in the top end of the reaction kettle body, and a plurality of connecting ports are integrally formed in the upper surface of the sealing cover; a stirring assembly is arranged in the reaction kettle body and comprises a stirring shaft, one end of the stirring shaft is rotationally mounted in the corresponding connecting port and extends to the outside of the sealing cover to be connected with a driving device, the other end of the stirring shaft extends into the reaction kettle body, and multiple layers of paddle groups with different shapes are arranged on the outer wall of the stirring shaft from top to bottom; the multi-layer paddle group with different shapes is adopted, and the paddles with different shapes work cooperatively, so that reaction materials can be fully stirred at different depths and angles, the reaction materials are ensured to be uniformly mixed in the whole reaction kettle, the reaction efficiency is improved, the reaction time is shortened, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical production, and more specifically, to a sodium acetate purification device. Background Technology

[0002] In the chemical production field, sodium acetate is an important chemical raw material widely used in various industries, and its purity directly affects the quality and performance of related products. Currently, existing sodium acetate purification equipment faces many problems that urgently need to be addressed.

[0003] In existing sodium acetate purification equipment, the stirring mechanism inside the reactor mostly uses only one type of impeller, which easily leads to uneven mixing. A single impeller can only produce a limited stirring effect at a specific depth and angle, failing to ensure that the reactants are fully mixed throughout the reactor. For example, if only ordinary impellers are used, the material at the bottom of the reactor and near the reactor wall may not be adequately stirred, resulting in incomplete reaction, reduced reaction efficiency, prolonged reaction time, and increased production costs.

[0004] How to invent a sodium acetate purification device to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sodium acetate purification device, which aims to improve the problem that most existing sodium acetate purification devices only have one type of stirring blade in the stirring mechanism, which easily leads to uneven stirring, resulting in incomplete reaction, reduced reaction efficiency, prolonged reaction time, and increased production costs.

[0006] This invention is implemented as follows: A sodium acetate purification device includes a reaction vessel, an evaporation and crystallization device, a centrifugal separation device, and a drying device connected in sequence. The reaction vessel includes a reaction vessel body, and a sealing cover is detachably connected to the top opening of the reaction vessel body. Several connection ports are integrally provided on the upper surface of the sealing cover. A stirring assembly is provided inside the reaction vessel body. The stirring assembly includes a stirring shaft. One end of the stirring shaft is rotatably installed in the corresponding connection port and extends to the outside of the sealing cover and is connected to a driving device. The other end of the stirring shaft extends into the interior of the reaction vessel body, and multiple layers of blades of different shapes are provided on the outer wall from top to bottom. A heating unit is provided on the outer wall of the reaction vessel body. A feeding unit is provided in one of the connection ports. A discharge pipe is connected to the bottom surface of the reaction vessel body, and a filter unit is detachably connected to the bottom end of the discharge pipe.

[0007] In a preferred embodiment of this utility model, the driving device is a drive motor, which is fixedly connected to the upper surface of the sealing cover via a motor bracket, and one end of the output shaft of the drive motor is fixedly connected to the end of the stirring shaft located outside the sealing cover.

[0008] In a preferred embodiment of this utility model, the multi-layered blade assembly with different shapes includes propeller blades, turbine blades, and anchor blades. The propeller blades are numerous and evenly distributed in a ring on the outer wall of the bottom perimeter of the stirring shaft. The turbine blades are numerous and evenly distributed in a ring on the outer wall of the middle section of the stirring shaft. The anchor blades are located on the lower section of the stirring shaft, and the outer walls on both sides of the anchor blades are in contact with the inner wall of the reactor body. The anchor blades, as well as each propeller blade and turbine blade, are detachably connected to the stirring shaft by fasteners.

[0009] In a preferred embodiment of this utility model, several auxiliary propeller blades are symmetrically and integrally arranged on the inner walls of both sides of the anchor blade.

[0010] In a preferred embodiment of this utility model, the heating unit includes a heating device body, which is fixedly installed on the outer wall of one side of the reactor body. A heat-conducting pipe is connected to the heating device body, and the heat-conducting pipe is arranged in a multi-layered spiral shape around the outside of the reactor body and in contact with the outer wall of the reactor body.

[0011] In a preferred embodiment of this utility model, the feeding unit includes a main feeding pipe, which is fixedly installed in a corresponding connection port and extends one end into the inside of a sealing cover. The other end of the main feeding pipe is connected to several branch feeding pipes, and each branch feeding pipe is connected to a feeding valve and a flow meter.

[0012] In a preferred embodiment of this utility model, a discharge valve is provided inside the discharge pipe.

[0013] In a preferred embodiment of this utility model, the filter unit includes a housing, and the upper and lower openings of the housing are integrally provided with connecting flanges for connecting the discharge pipe and the evaporation crystallization device, respectively. Two first filter screens and second filter screens distributed vertically are detachably connected between the inner walls of the housing.

[0014] In a preferred embodiment of this invention, the pore size of the first filter screen is larger than that of the second filter screen.

[0015] The beneficial effects of this utility model are as follows: The sodium acetate purification device obtained by the above design can, in use, employ a multi-layered blade assembly with different shapes. The blades of different shapes work together to fully stir the reactants at different depths and angles, ensuring that the reactants are uniformly mixed in the entire reaction vessel, thereby improving reaction efficiency, shortening reaction time, and reducing production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic perspective view of the overall structure provided by the embodiment of this utility model;

[0018] Figure 2 A three-dimensional schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;

[0019] Figure 3 A perspective view of the overall structure of the stirring shaft provided for an embodiment of this utility model;

[0020] Figure 4 A three-dimensional schematic cross-sectional view of the filter unit provided for an embodiment of this utility model;

[0021] Figure 5 A perspective view illustrating the overall structure of the feeding unit provided for an embodiment of this utility model.

[0022] In the diagram: 1. Reactor body; 2. Sealing cover; 201. Connection port; 3. Stirring assembly; 301. Stirring shaft; 302. Drive motor; 303. Motor bracket; 304. Propeller blade; 305. Turbine blade; 306. Anchor blade; 307. Auxiliary propeller blade; 4. Heating device body; 401. Heat pipe; 5. Feeding unit; 501. Main feed pipe; 502. Branch feed pipe; 503. Feed valve; 504. Flow meter; 6. Discharge pipe; 601. Discharge valve; 7. Filtration unit; 701. Outer shell; 702. Connecting flange; 703. First filter screen; 704. Second filter screen. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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 some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a sodium acetate purification device, comprising a reaction vessel, an evaporation and crystallization device, a centrifugal separation device, and a drying device connected in sequence. The reaction vessel includes a reaction vessel body 1, with a sealing cover 2 detachably connected to the top opening of the reaction vessel body 1. The upper surface of the sealing cover 2 is integrally provided with several connection ports 201. A stirring assembly 3 is provided inside the reaction vessel body 1. The stirring assembly 3 includes a stirring shaft 301. One end of the stirring shaft 301 is rotatably installed in the corresponding connection port 201 and extends to the outside of the sealing cover 2 and is connected to a driving device. The other end of the stirring shaft 301 extends into the interior of the reaction vessel body 1, and the outer wall is provided with multiple layers of blades of different shapes from top to bottom. A heating unit is provided on the outer wall of the reaction vessel body 1. A feeding unit 5 is provided in one of the connection ports 201. A discharge pipe 6 is connected to the bottom surface of the reaction vessel body 1, and a filter unit 7 is detachably connected to the bottom end of the discharge pipe 6.

[0025] Please see Figure 2 and Figure 3 The driving device is a drive motor 302. The drive motor 302 is fixedly connected to the upper surface of the sealing cover 2 through the motor bracket 303. One end of the output shaft of the drive motor 302 is fixedly connected to the end of the stirring shaft 301 located outside the sealing cover 2.

[0026] The drive motor 302 is fixedly mounted on the motor bracket 303 by bolts or other means. The motor bracket 303 is also fixedly connected to the upper surface of the sealing cover 2 by bolts or other means. The output shaft of the drive motor 302 is fixedly connected to the end of the stirring shaft 301 located outside the sealing cover 2 by a coupling or other means. When the drive motor 302 is started, the rotation of its output shaft drives the stirring shaft 301 to rotate, thereby realizing the stirring of various raw materials inside the reactor body 1.

[0027] Furthermore, the multi-layered blade assembly with different shapes includes a propeller blade 304, a turbine blade 305, and an anchor blade 306. The propeller blades 304 are numerous and evenly distributed in a ring on the outer wall of the bottom periphery of the stirring shaft 301. The turbine blades 305 are numerous and evenly distributed in a ring on the outer wall of the middle section of the stirring shaft 301. The anchor blades 306 are located on the lower section of the stirring shaft 301, and the outer walls on both sides of the anchor blades 306 are in contact with the inner wall of the reactor body 1. The anchor blades 306, as well as each propeller blade 304 and turbine blade 305, are detachably connected to the stirring shaft 301 by fasteners.

[0028] The propeller blades 304 are propeller-shaped, and multiple propeller blades 304 are evenly distributed in a ring on the outer wall of the bottom perimeter of the stirring shaft 301, and are detachably connected to the stirring shaft 301 by bolts or other fasteners. When the stirring shaft 301 rotates, the propeller blades 304 generate axial flow, causing the material to flow vertically in the reactor body 1, promoting the circulation of the material at the bottom. Multiple turbine blades 305 are evenly distributed in a ring on the outer wall of the middle section of the stirring shaft 301, and are also detachably connected to the stirring shaft 301 by fasteners. When the turbine blades 305 rotate, they generate a large radial flow, allowing the material to diffuse fully in the radial direction of the reactor. The anchor blades 306 are shaped like anchors and are installed on the lower section of the stirring shaft 301. Their outer walls on both sides contact the inner wall of the reactor body 1, and they are detachably connected to the stirring shaft 301 by fasteners. When the anchor blades 306 rotate, they can scrape off the material on the inner wall of the reactor, preventing material deposition, and at the same time promoting the flow of material near the reactor wall. The rational distribution of different shaped impellers on the stirring shaft 301 ensures that the reactants are fully stirred at different depths and angles within the reactor body 1. The propeller-type impeller 304 promotes axial circulation, the turbine-type impeller 305 enhances radial diffusion, and the anchor-type impeller 306 prevents material deposition. The synergistic effect of these three elements greatly improves the mixing uniformity and reaction efficiency of the materials, thereby enhancing the purification effect of sodium acetate.

[0029] Furthermore, several auxiliary propeller blades 307 are symmetrically and integrally arranged on the inner walls of both sides of the anchor blade 306.

[0030] The auxiliary propeller blades 307 are symmetrically and integrally mounted on the inner walls of both sides of the anchor blade 306, and rotate together with the anchor blade 306 along with the stirring shaft 301. The auxiliary propeller blades 307 are helical, and their helical direction and pitch can be designed according to actual stirring requirements. When the anchor blade 306 rotates, the auxiliary propeller blades 307 also rotate, generating additional stirring force and enhancing the mixing effect of the materials.

[0031] Please see Figure 1The heating unit includes a heating device body 4, which is fixedly installed on the outer wall of one side of the reactor body 1. A heat conduction pipe 401 is connected to the heating device body 4. The heat conduction pipe 401 is arranged in a multi-layer spiral shape and covers the outside of the reactor body 1 and contacts the outer wall of the reactor body 1.

[0032] The heating device body 4 can be electrically heated or use other heating methods, such as steam heating. The heating device body 4 is fixedly installed on the outer wall of one side of the reactor body 1, and the heat it generates is transferred through heat pipes 401. The heat pipes 401 are arranged in a multi-layered spiral shape around the outside of the reactor body 1 and contact the outer wall of the reactor body 1 to increase the area and efficiency of heat transfer. When the heating device body 4 is activated, heat is evenly transferred to the outer wall of the reactor body 1 through the heat pipes 401, thereby heating the material inside the reactor. The multi-layered spiral structure of the heat pipes 401 increases the area of ​​heat transfer, allowing the reactor body 1 to be heated more evenly and avoiding localized overheating or overcooling. This heating method can precisely control the reaction temperature, improve the stability and selectivity of the reaction, and is beneficial for improving the purification efficiency and quality of sodium acetate.

[0033] Furthermore, a discharge valve 601 is installed inside the discharge pipe 6.

[0034] The discharge valve 601 is installed inside the discharge pipe 6 and can be controlled manually or electrically. After the reaction is complete, the operator opens the discharge valve 601, and the reacted material is discharged from the reactor through the discharge pipe 6 under gravity or pressure. When discharge is not required, the discharge valve 601 is closed to prevent material leakage.

[0035] Please see Figure 5 The feeding unit 5 includes a main feeding pipe 501, which is fixedly installed in the corresponding connection port 201 and extends to the inside of the sealing cover 2 at one end. The other end of the main feeding pipe 501 is connected to several branch feeding pipes 502, and each branch feeding pipe 502 is connected to a feeding valve 503 and a flow meter 504.

[0036] During the feeding process, the flow rate of the material is controlled by adjusting the opening of the feed valve 503 according to the reaction requirements. Simultaneously, the feed rate is monitored in real time by the flow meter 504 to ensure that various materials enter the reactor body 1 according to the preset proportions. This improves the accuracy and controllability of the reaction. Different branch feed pipes 502 can transport different materials separately, avoiding mutual interference between materials and helping to improve the selectivity and yield of the reaction, thereby improving the purification quality of sodium acetate.

[0037] Please see Figure 4The filter unit 7 includes a housing 701. Both the upper and lower openings of the housing 701 are integrally provided with connecting flanges 702 for connecting the discharge pipe 6 and the evaporation crystallization device, respectively. Two first filter screens 703 and second filter screens 704, which are distributed vertically, are detachably connected between the inner walls of the housing 701.

[0038] The connecting flanges 702 at the upper and lower openings of the outer shell 701 of the filter unit 7 are connected to the discharge pipe 6 and the evaporation crystallization device respectively by bolts or other means, ensuring the airtightness of the connection. The first filter screen 703 and the second filter screen 704 are detachably connected between the inner walls of the outer shell 701 by means of slots or other means. The reacted material enters the filter unit 7 from the discharge pipe 6, passes through the first filter screen 703 and the second filter screen 704 for filtration, and finally enters the evaporation crystallization device. The filter unit effectively removes impurities from the reacted material, improves the purity of the material entering the evaporation crystallization device, and is beneficial to improving the crystallization quality and purification effect of sodium acetate. The detachable filter screens facilitate cleaning and replacement, ensuring the long-term stable operation of the filter unit.

[0039] Furthermore, the pore size of the first filter screen 703 is larger than that of the second filter screen 704.

[0040] The material first passes through a first filter screen 703 with larger pore sizes to remove larger impurity particles, reducing the filtration burden on the second filter screen 704. Then, it passes through a second filter screen 704 with smaller pore sizes to further remove smaller impurity particles, thus achieving staged filtration. This staged filtration method can more effectively remove impurity particles of different sizes, improving filtration efficiency and effectiveness. It also ensures higher purity of the filtered material, which is beneficial for subsequent evaporation, crystallization, and purification processes.

[0041] Working Principle: During the mixing and reaction stage, the operator precisely controls the flow rate of different materials by adjusting the opening of the feed valves 503 on each branch feed pipe 502 in the feed unit 5 according to the reaction requirements. The flow meter 504 monitors the feed rate in real time to ensure that various materials enter the reactor body 1 through the main feed pipe 501 in a preset proportion. After the drive motor 302 starts, its output shaft drives the stirring shaft 301 to rotate. The propeller blades 304 on the stirring shaft 301 generate axial flow, promoting the material to circulate vertically in the reactor body 1. The turbine blades 305 generate a large radial flow, allowing the material to diffuse fully radially. The anchor blades 306 scrape away material from the inner wall of the reactor to prevent sedimentation, and the auxiliary propeller blades 307 on both sides further enhance the mixing effect. Simultaneously, the heating device body 4 evenly transfers heat to the outer wall of the reactor body 1 through the heat pipe 401, providing suitable and stable temperature conditions for the reaction and accelerating the reaction process.

[0042] After the reaction is complete, the operator opens the discharge valve 601 in the discharge pipe 6, and the reacted material flows into the filter unit 7. The material first passes through the first filter screen 703 with a larger pore size to remove larger impurity particles and reduce the filtration burden on the second filter screen 704; then it passes through the second filter screen 704 with a smaller pore size to further remove tiny impurities, achieving graded filtration and improving the purity of the material.

[0043] The material, after preliminary filtration, enters an evaporation and crystallization unit. The unit adjusts the product density by heating and evaporating steam, causing sodium acetate to reach a supersaturated state before cooling and crystallizing, forming a mixture containing sodium acetate crystals and mother liquor. Next, this mixture is conveyed to a centrifugal separator, where the centrifugal force generated by high-speed rotation rapidly separates the sodium acetate crystals from the mother liquor, yielding relatively pure sodium acetate crystals. Finally, the separated sodium acetate crystals enter a drying unit, where residual moisture on the crystal surface is removed, resulting in high-purity, dry sodium acetate product, completing the entire purification process.

[0044] It should be noted that the specific models and specifications of the drive motor 302, heating device body 4, feed valve 503, flow meter 504, discharge valve 601, evaporation crystallization device, centrifugal separation device, and drying device need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0045] The power supply and operating principles of the drive motor 302, heating device body 4, feed valve 503, flow meter 504, discharge valve 601, evaporation crystallization device, centrifugal separation device, and drying device are clear to those skilled in the art and will not be described in detail here.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sodium acetate purification apparatus, comprising a reaction vessel, an evaporation and crystallization device, a centrifugal separation device, and a drying device connected in sequence, characterized in that, The reactor includes a reactor body, a sealing cover detachably connected to the top opening of the reactor body, a plurality of connection ports integrally formed on the upper surface of the sealing cover, a stirring assembly inside the reactor body, the stirring assembly including a stirring shaft, one end of the stirring shaft being rotatably installed in the corresponding connection port and extending to the outside of the sealing cover and connected to a drive device, the other end of the stirring shaft extending into the interior of the reactor body, and the outer wall being provided with multiple layers of blades of different shapes from top to bottom, a heating unit being provided on the outer wall of the reactor body, a feeding unit being provided in one of the connection ports, and a discharge pipe being connected to the bottom surface of the reactor body, the bottom end of the discharge pipe being detachably connected to a filter unit.

2. The sodium acetate purification apparatus as described in claim 1, characterized in that: The driving device is a drive motor, which is fixedly connected to the upper surface of the sealing cover via a motor bracket. One end of the output shaft of the drive motor is fixedly connected to the end of the stirring shaft located outside the sealing cover.

3. The sodium acetate purification apparatus as described in claim 1, characterized in that: The multi-layered blade assembly with different shapes includes propeller blades, turbine blades, and anchor blades. The number of propeller blades is multiple and they are evenly distributed in a ring on the outer wall of the bottom of the stirring shaft. The number of turbine blades is multiple and they are evenly distributed in a ring on the outer wall of the middle section of the stirring shaft. The anchor blades are located on the lower section of the stirring shaft, and the outer walls on both sides of the anchor blades are in contact with the inner wall of the reactor body. The anchor blades, as well as each propeller blade and turbine blade, are detachably connected to the stirring shaft by fasteners.

4. The sodium acetate purification apparatus as described in claim 3, characterized in that: Several auxiliary propeller blades are also symmetrically and integrally arranged on the inner walls of both sides of the anchor-type propeller blade.

5. The sodium acetate purification apparatus as described in claim 1, characterized in that: The heating unit includes a heating device body, which is fixedly installed on the outer wall of one side of the reactor body. A heat-conducting pipe is connected to the heating device body, and the heat-conducting pipe is arranged in a multi-layered spiral shape around the outside of the reactor body and in contact with the outer wall of the reactor body.

6. The sodium acetate purification apparatus as described in claim 1, characterized in that: The feeding unit includes a main feeding pipe, which is fixedly installed in the corresponding connection port and extends to the inside of the sealing cover at one end. The other end of the main feeding pipe is connected to several branch feeding pipes, and each branch feeding pipe is connected to a feeding valve and a flow meter.

7. The sodium acetate purification apparatus as described in claim 1, characterized in that: The discharge pipe is equipped with a discharge valve.

8. The sodium acetate purification apparatus as described in claim 1, characterized in that: The filtration unit includes a housing, and the upper and lower openings of the housing are integrally provided with connecting flanges for connecting the discharge pipe and the evaporation crystallization device, respectively. Two first and second filter screens, which are distributed vertically, are detachably connected between the inner walls of the housing.

9. The sodium acetate purification apparatus as described in claim 8, characterized in that: The pore size of the first filter screen is larger than that of the second filter screen.

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