Efficient polymerization reaction kettle for producing ABS (Acrylonitrile Butadiene Styrene) resin
By employing a multi-layer stirring blade and high-pressure nozzle cleaning system in the reactor used for ABS resin production, the problems of uneven material mixing and difficult reactor wall cleaning were solved, thereby improving reaction efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-03
AI Technical Summary
Existing polymerization reactors used in ABS resin production suffer from uneven material mixing and difficulty in cleaning the inner wall of the reactor, resulting in low reaction efficiency, unstable product quality, and contamination by impurities.
It adopts a multi-layer stirring blade structure, including inclined blades and anchor blades, combined with a high-pressure nozzle cleaning system and a precise temperature control mechanism to ensure uniform mixing of materials and clean vessel walls.
It improves reaction efficiency and product quality, reduces impurity contamination, and ensures the cleanliness and purity of the reaction vessel.
Smart Images
Figure CN224071963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, specifically to a high-efficiency polymerization reactor for ABS resin production. Background Technology
[0002] ABS resin, a terpolymer, is polymerized from acrylonitrile, butadiene, and styrene. Its unique molecular structure endows it with numerous superior properties, resulting in excellent overall performance. It exhibits outstanding impact resistance, effectively resisting external impacts and resisting breakage. Its chemical stability is also extremely high, maintaining its characteristics in various environments and resisting chemical reactions that cause deterioration. Based on these advantages, ABS resin has become one of the most widely used engineering plastics. In the electronics industry, it is commonly used to manufacture casings and components, providing robust and durable protection for electronic products. In the automotive manufacturing industry, it is extensively used in interior and exterior trims and various functional components, enhancing the safety and aesthetics of vehicles. In building materials, it can be used to produce pipes and sheets, meeting the stringent performance requirements of construction materials.
[0003] In the preparation of ABS resin, a common and important technical principle is to simultaneously add three polymer monomers to a polymerization reactor for polymerization. However, existing polymerization reactors used for ABS resin production face a series of technical challenges that urgently need to be addressed.
[0004] From the perspective of stirring devices, the structures of the internal stirring devices in current reactors are generally quite simple. In the complex ABS resin polymerization reaction system, this simple structure makes it difficult to achieve thorough mixing of materials. During the reaction, uneven mixing of materials will prevent the chemical reaction from proceeding fully and completely, directly reducing reaction efficiency. Moreover, incomplete reaction will cause fluctuations in product quality, making it difficult to guarantee stability and leading to an increased defect rate.
[0005] Furthermore, after prolonged use, a large amount of material residue accumulates on the inner wall of the reactor. Due to flaws in the existing reactor's internal structure design, numerous hard-to-reach areas exist during cleaning. Material residue in these areas cannot be completely removed and accumulates over time, affecting the purity of subsequent reactions. More seriously, these residual impurities are highly likely to contaminate the product, causing product contamination problems, severely impacting product quality and reducing its market competitiveness. Utility Model Content
[0006] This invention provides a high-efficiency polymerization reactor for ABS resin production, which aims to solve the technical problems of poor material mixing effect and difficulty in cleaning the inner wall of the reactor in the prior art.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] This utility model provides a high-efficiency polymerization reactor for ABS resin production, comprising:
[0009] The vessel body has a material inlet valve at the top and a material outlet valve at the lowest point.
[0010] A stirring mechanism is disposed within the vessel body; it includes a shaft, 3-4 layers of inclined blades disposed on the shaft, and an anchor blade disposed at the bottom of the shaft; the diameter of the inclined blades decreases sequentially from low to high; the inclination angle at the root of the blades is 45°, and the inclination angle at the blade tip is 30°, with the inclination angle of the blades gradually changing from the root to the tip; the anchor blade includes several U-shaped scrapers and several horizontally arranged guide plates, the inclination angle of each guide plate being 15° to 30°;
[0011] The material cleaning mechanism is located at the top of the inner cavity of the vessel body; it includes a cleaning liquid inlet valve located at the top of the vessel body and a high-pressure nozzle located inside the vessel body and fixedly connected to the cleaning liquid inlet valve;
[0012] The temperature control mechanism is located on the outer wall of the vessel.
[0013] Furthermore, a drive motor is provided at the top of the vessel body, and the drive motor is connected to the top of the shaft body through a reduction gear transmission device.
[0014] Furthermore, a jacket is provided on the outer periphery of the vessel body, and the jacket covers the temperature control mechanism.
[0015] Furthermore, an inspection hole is provided on the top of the vessel body.
[0016] Furthermore, a support is provided in the middle of the outer wall of the vessel.
[0017] Furthermore, the diameter of the inclined blade is 1 / 3 to 2 / 3 of the diameter of the inner cavity of the vessel, the spacing between two adjacent layers of inclined blades is 0.8-1.2 times the diameter of the lower layer of inclined blades, and the number of blades in each layer of the inclined blade is 4 to 6.
[0018] Furthermore, the oblique blade propeller has three layers, and each layer of the oblique blade propeller has four blades.
[0019] Furthermore, the blade tip has serrated structures on both sides.
[0020] Furthermore, the gap between the scraper and the inner wall of the vessel is 1-5 mm.
[0021] Furthermore, the temperature control mechanism includes a cooling medium inlet valve and a heating medium inlet valve disposed in the upper part of the vessel body, a pipe spirally wound along the outer wall of the vessel body, a medium outlet valve disposed at the bottom of the vessel body, and a temperature sensor disposed in the vessel body. The cooling medium inlet valve and the heating medium inlet valve are both connected to the inlet of the pipe, and the medium outlet valve is connected to the outlet of the pipe.
[0022] The beneficial effects achieved by this utility model are as follows:
[0023] This invention employs a multi-layered stirring impeller system inside the reaction vessel, consisting of an upper inclined blade impeller and a lower anchor impeller. The inclined blade impeller generates strong axial and radial mixing flow, allowing materials to flow fully vertically and horizontally within the vessel. The anchor impeller, close to the bottom of the vessel wall, effectively scrapes away material adhering to the wall, preventing material accumulation and enhancing the uniformity of stirring. The combination of these two systems results in more uniform material mixing, a more complete chemical reaction, and significantly improved reaction efficiency and product quality.
[0024] This invention employs a temperature control mechanism within the jacket of the reactor to regulate the internal reaction temperature, and a high-precision temperature sensor installed inside the reactor. The temperature sensor is connected to a control module, which then rapidly adjusts the flow rate and temperature of the heating / cooling medium based on the preset temperature and the real-time temperature feedback from the sensor. This achieves precise control of the internal reaction temperature, effectively preventing abnormal reactions caused by temperature fluctuations and comprehensively reducing production costs.
[0025] This invention employs a technical solution of installing high-pressure nozzles inside the reactor body. These nozzles are connected to an external cleaning fluid supply system. When cleaning the inner wall of the reactor, the high-pressure nozzles spray high-pressure cleaning fluid into every corner of the reactor. Combined with the low-speed rotation of the stirring blades, this ensures there are no blind spots inside the reactor, enabling rapid and thorough removal of material residues. This effectively solves the technical problem of difficult reactor cleaning, guarantees the cleanliness of the reactor's interior, provides a pure environment for subsequent reactions, and reduces contamination of the product by impurities. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0027] Figure 1 This is the front view of the present invention; in the figure, the dashed lines are circuit control lines.
[0028] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0029] Figure 3 yes Figure 2 A magnified view of part A in the image.
[0030] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model.
[0031] Figure 5 yes Figure 4 BB section view in the middle.
[0032] Figure 6 yes Figure 4 CC section view in the image.
[0033] Figure 7 yes Figure 4 DD section view in the image.
[0034] Figure 8 This is a top view of the oblique blade propeller of this utility model.
[0035] Figure 9 This is a top view of the anchor-type propeller of this utility model.
[0036] In the diagram, the X-axis is defined as the front-to-back direction (vertical), and its arrow points to the front; the Y-axis is defined as the left-to-right direction (horizontal), and its arrow points to the left; the Z-axis is defined as the up-down direction (vertical), and its arrow points to the up.
[0037] In the diagram, 10 is a high-efficiency polymerization reactor; 110 is the reactor body; 111 is the material inlet valve; 112 is the material outlet valve; 113 is the jacket; 114 is the inspection hole; 115 is the support; 120 is the stirring mechanism; 121 is the shaft; 122 is the inclined blade impeller; 122A is the blade; 122B is the root; 122C is the blade tip; 123 is the anchor impeller; 123A is the scraper; 123B is the guide plate; 130 is the reduction gear; 140 is the drive motor; 150 is the temperature control mechanism; 151 is the cooling medium inlet valve; 152 is the heating medium inlet valve; 153 is the pipeline; 154 is the medium outlet valve; 160 is the material cleaning mechanism; 161 is the cleaning liquid inlet valve; 162 is the high-pressure nozzle; 170 is the temperature sensor; and 180 is the control module. Detailed Implementation
[0038] 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 a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0041] like Figures 1-9 As shown, this utility model provides a high-efficiency polymerization reactor 10 for ABS resin production, including a reactor body 110. A material inlet valve 111 is installed at the top of the reactor body 110, and the material inlet valve 111 is fixedly connected to a feed pipeline within the plant area. A material outlet valve 112 is installed at the lowest point of the reactor body 110, and the material outlet valve 112 is fixedly connected to a discharge pipeline within the plant area. A stirring mechanism 120 is installed inside the reactor body 110, and a drive motor 140 is installed at the top of the reactor body 110. The drive motor 140 drives the stirring mechanism 120 to operate through a reduction transmission device 130. A material cleaning mechanism 160 is installed at the top of the inner cavity of the reactor body 110, and the material cleaning mechanism 160 is used to clean the inner wall of the reactor body 110. A temperature regulating mechanism 150 is installed on the outer wall of the reactor body 110 to control the reaction temperature inside the reactor body 110.
[0042] In one embodiment, a jacket 113 is provided on the outer periphery of the vessel body 110, and the jacket 113 covers the temperature control mechanism 150; this design can protect the temperature control mechanism 150, reduce the impact of environmental factors on the interior of the vessel body 110, and improve reaction stability.
[0043] In one embodiment, the top of the vessel body 110 is provided with an inspection hole 114, which is used to facilitate maintenance work on the inside of the vessel body 110 by the staff.
[0044] In one embodiment, a support 115 is provided in the middle of the outer wall of the vessel body 110, and the support 115 is used to install and fix the vessel body 110.
[0045] The stirring mechanism 120 includes a shaft 121, three to four layers of inclined blades 122 disposed on the shaft 121, and an anchor blade 123 disposed at the bottom of the shaft 121. The shaft 121 is coaxial with the vessel body 110. The top end of the shaft 121 extends out of the vessel body 110 and is rotatably and sealed to the vessel body 110. The top end of the shaft 121 is connected to the output end of the speed reduction transmission device 130, and the input end of the speed reduction transmission device 130 is connected to the drive shaft of the drive motor 140.
[0046] The oblique blade propeller 122 includes a bushing fixed to the shaft body 121 and a plurality of blades 122A disposed on the bushing.
[0047] The diameter of the inclined blade 122 is 1 / 3 to 2 / 3 of the inner diameter of the vessel body 110. The diameter of the inclined blade 122 is determined by the viscosity of the material. The higher the viscosity of the material, the larger the diameter of the inclined blade 122 should be to increase the shear force and make the material mix more evenly, but the energy consumption is also greater. Therefore, a balance point must be found. From low to high, the diameter of the inclined blade 122 decreases sequentially, that is, the diameter of the upper inclined blade 122 is smaller than the diameter of the lower inclined blade 122. This design can form an "inverted cone" flow field, which enhances the upward conveying capacity of the material at the bottom. The spacing between two adjacent layers of inclined blades 122 is 0.8-1.2 times the diameter of the lower layer of inclined blades 122 to avoid flow field interference. For example, when there are three layers of inclined blades 122, the spacing between the first layer of inclined blades 122 and the second layer of inclined blades 122 is determined based on the diameter of the second layer of inclined blades 122; the spacing between the second layer of inclined blades 122 and the third layer of inclined blades 122 is determined based on the diameter of the third layer of inclined blades 122.
[0048] Except for the diameter, the oblique blades 122 in each layer are identical in structure. The number of blades 122A in each layer is 4 to 6. The blades 122A are evenly arranged in a circle. The greater the viscosity of the material, the more blades 122A should be used to obtain a better stirring effect, but the energy consumption will also be greater. The root 122B of the blade 122A has an inclination angle of 45°, and the tip 122C of the blade 122A has an inclination angle of 30°. The inclination angle of the blade 122A gradually changes from the root 122B to the tip 122C. Specifically, the larger inclination angle of the blade 122A will lead to axial flow dominance during the rotation of the inclined blade 122, enhancing the vertical circulation. The smaller inclination angle of the blade 122A will lead to radial flow dominance during the rotation of the inclined blade 122, improving the dispersion capability. The gradually changing inclination angle of the blade 122A, combined with the multi-layered inclined blade 122 configuration, can form a strong upward flow near the axis of the vessel 110, increasing the fluidity of the material within the vessel 110. In addition, the smaller inclination angle near the tip 122C of the blade 122A provides strong shearing force, which can effectively disperse the material and prevent clumping.
[0049] In one embodiment, the oblique blade propeller 122 has three layers, and each layer of the oblique blade propeller 122 has four blades 122A.
[0050] In one embodiment, serrated structures (not shown in the figure) are provided on both sides near the tip 122C of the blade 122A to improve the local turbulence intensity and further enhance the shear force.
[0051] The anchor-type paddle 123 includes a lower bushing fixed to the bottom end of the shaft 121, an upper bushing fixed to the shaft 121 and located above the lower bushing, a plurality of U-shaped scrapers 123A, and a plurality of horizontally arranged guide plates 123B. The scrapers 123A are evenly distributed circumferentially and are all fixed to the shaft 121 by the lower bushing. The gap between the scrapers 123A and the inner wall of the vessel 110 is 1-5 mm to scrape off the adhering material from the inner wall of the vessel 110, preventing material accumulation. Specifically, there are two scrapers 123A, arranged perpendicularly to each other; and four guide plates 123B.
[0052] Several guide plates 123B are evenly arranged circumferentially. One end of each guide plate 123B is fixed to the upper bushing, and the other end is fixed to one side of the scraper 123A. The inclination angle of each guide plate 123B is 15° to 30°, preferably 25°. The function of the guide plates 123B is to convert the horizontal flow generated when the anchor paddle 123 rotates into axial flow, forcibly conveying the high-density or high-viscosity material at the bottom (such as undispersed rubber particles or precipitated prepolymers) upward to the high-shear zone of the inclined blade paddle 122, avoiding uneven mixing or reaction stagnation caused by sedimentation.
[0053] Through various designs of the anchor paddle 123 and the multi-layer inclined blade paddle 122, an upward material flow will be formed at the axis of the vessel body 110. After this material flow reaches the top of the vessel body 110, it will disperse and slide down along the inner wall of the vessel body 110, repeating the cycle to form a complete material circulation, making the material mix more uniform and avoiding the occurrence of stirring dead zones.
[0054] The temperature control mechanism 150 includes a cooling medium inlet valve 151 and a heating medium inlet valve 152 located in the upper part of the vessel body 110, a pipe 153 spirally wound along the outer wall of the vessel body 110, a medium outlet valve 154 located at the bottom of the vessel body 110, and a temperature sensor 170 located inside the vessel body 110. The cooling medium inlet valve 151 and the heating medium inlet valve 152 are both connected to the inlet of the pipe 153, and the medium outlet valve 154 is connected to the outlet of the pipe 153. The cooling medium inlet valve 151 is connected to the cooling medium pipeline in the plant area, the heating medium inlet valve 152 is connected to the heating medium pipeline in the plant area, and the medium outlet valve 154 is connected to the circulating water pipeline in the plant area. By controlling the opening and closing of the cooling medium inlet valve 151 and the heating medium inlet valve 152, the temperature of the medium in the pipe 153 is controlled, thereby transferring heat to or absorbing heat from the vessel body 110, and controlling the temperature inside the vessel body 110 more accurately and quickly.
[0055] The material cleaning mechanism 160 includes a cleaning liquid inlet valve 161 disposed on the top of the vessel body 110 and a high-pressure nozzle 162 disposed inside the vessel body 110 and fixedly connected to the cleaning liquid inlet valve 161. The cleaning liquid inlet valve 161 is fixedly connected to the cleaning liquid supply pipeline. The high-pressure nozzle 162 is provided with several nozzles, which can be used to rinse various parts of the inner wall of the vessel body 110 with cleaning liquid.
[0056] In one embodiment, the drive motor 140 is a variable frequency motor, controlled by a frequency converter; this design allows for dynamic adjustment of the output power according to the actual workload, thereby improving responsiveness while effectively saving energy consumption.
[0057] The high-efficiency polymerization reactor 10 also includes a control module 180, which is the control center of the high-efficiency polymerization reactor 10. This module controls the automated operation of the reactor and communicates with other equipment in the plant. The control module 180 includes a PLC controller, which is connected to the drive motor 140, frequency converter, valves, and temperature sensor 170 to automatically control the operation of each device. For those skilled in the art, implementing the software portion of the control module 180 based on the description of this embodiment is relatively easy; therefore, specific details will not be elaborated further.
[0058] The working principle of this utility model is as follows:
[0059] I. Installation and Commissioning: First, assemble all components of the reactor according to the design requirements, ensuring that the stirring blade 122A is securely installed, the pipe 153 of the internal temperature control mechanism 150 of the jacket 113 is tightly connected without leaks, and the temperature sensor 170 and control module 180 are accurately connected and calibrated. After installation, perform no-load commissioning to check the rotation of the stirring blade 122A, the spraying effect of the high-pressure nozzle 162, and the operating status of the temperature control system.
[0060] II. Reaction Operation: Add the reactants to the reactor according to the process requirements. Set parameters such as stirring speed and reaction temperature through the control module 180. Start the stirring device and temperature control mechanism 150. The inclined blade 122 and anchor blade 123 work together to ensure thorough mixing of the materials. The temperature control mechanism 150 precisely adjusts the reaction temperature inside the reactor according to the set temperature to ensure that the reaction proceeds under optimal conditions.
[0061] III. Cleaning Operation: After the reaction is complete, discharge the material from the reactor. Connect the cleaning solution supply system and start the high-pressure nozzle 162 and the stirring blade 122A to rotate at low speed to clean the reactor. After cleaning, rinse thoroughly with clean water and check the cleanliness of the inside of the reactor body 110 to ensure that there is no material residue remaining.
[0062] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A high-efficiency polymerization reactor (10) for ABS resin production, characterized in that, The utility model relates to a kind of kettle body (110), which is provided with material inlet valve (111) at top, and is provided with material outlet valve (112) at lowest point. The stirring mechanism (120) is arranged in the kettle body (110), which includes shaft body (121), 3-4 layers of inclined-blade paddles (122) arranged on the shaft body (121), and anchor paddle (123) arranged at the bottom of the shaft body (121). The diameters of the inclined-blade paddles (122) decrease successively from low to high. The inclination angle of the root (122B) of the paddle blade (122A) of the inclined-blade paddle (122) is 45°, and the inclination angle of the tip (122C) of the paddle blade (122A) is 30°. The inclination angle of the paddle blade (122A) gradually changes from the root (122B) to the tip (122C). The anchor paddle (123) includes several U-shaped scrapers (123A) and several horizontally arranged guide plates (123B), and the inclination angle of the guide plates (123B) is 15°-30°. The material cleaning mechanism (160) is arranged at the top of the inner cavity of the kettle body (110), which includes cleaning liquid inlet valve (161) arranged at the top of the kettle body (110) and high-pressure nozzle (162) arranged inside the kettle body (110) and fixedly communicated with the cleaning liquid inlet valve (161). The temperature adjusting mechanism (150) is arranged on the outer wall of the kettle body (110). The kettle body (110) is provided with driving motor (140) at the top, and the driving motor (140) is connected with the top end of the shaft body (121) through speed reduction transmission device (130).
2. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The outer periphery of the kettle body (110) is provided with jacket (113), and the jacket (113) covers the temperature adjusting mechanism (150).
3. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The kettle body (110) is provided with access hole (114) at the top.
4. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The outer wall of the kettle body (110) is provided with support (115) in the middle.
5. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The diameter of the inclined-blade paddle (122) is 1 / 3-2 / 3 of the diameter of the inner cavity of the kettle body (110), the spacing between adjacent two layers of inclined-blade paddles (122) is 0.8-1.2 times of the diameter of the lower inclined-blade paddle (122), and the number of paddle blades (122A) of each layer of inclined-blade paddles (122) is 4-6.
6. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The number of layers of the inclined-blade paddle (122) is three, and each layer of the inclined-blade paddle (122) has four paddle blades (122A).
7. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 6, characterized in that: The tip (122C) of the paddle blade (122A) is provided with sawtooth structure on both sides.
8. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The gap between the scraper (123A) and the inner wall of the kettle body (110) is 1-5 mm.
9. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: 10. The high-efficiency polymerization reactor (10) for ABS resin production according to claim 1, characterized in that: The temperature adjusting mechanism (150) comprises a cooling medium inlet valve (151) and a heating medium inlet valve (152) arranged at the upper part of the kettle body (110), a pipeline (153) spirally arranged along the outer wall of the kettle body (110), a medium outlet valve (154) arranged at the bottom of the kettle body (110), and a temperature sensor (170) arranged in the kettle body (110), the cooling medium inlet valve (151) and the heating medium inlet valve (152) are communicated with the inlet of the pipeline (153), and the medium outlet valve (154) is communicated with the outlet of the pipeline (153).