A polymerization reactor for producing an aqueous polymer

Abstract

This utility model discloses a polymerization reactor for the production of water-based polymers. The upper surface of the reactor body is connected to a reactor cover via a flange. A motor is mounted on the reactor cover via a motor mount. The output shaft of the motor is connected to the top of the main shaft. A U-shaped scraper is inserted into the bottom of the main shaft via a first connecting sleeve. Triangular perforated plates are provided on both sides of the U-shaped scraper. The inner walls on both sides of the U-shaped scraper are provided with slots. The perforated plate blades are inserted into the main shaft via a second connecting sleeve. The outer edge of the perforated plate blades is inserted into the slots of the U-shaped scraper and is fastened with bolts and nuts. This utility model has a reasonable structure. On the one hand, the number and height of the perforated plate blades can be adjusted according to different water-based polymers, greatly improving flexibility. On the other hand, the outer end of the perforated plate blades cooperates with the slots of the U-shaped scraper and is fastened with bolts and nuts, thereby greatly improving the stability of the perforated plate blades.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a polymerization reaction vessel for the production of aqueous polymers. Background Technology

[0002] Aqueous polymers are a class of high molecular weight compounds that can dissolve or disperse in water to form stable systems. They are not a single chemical substance, but rather a vast family of materials.

[0003] For example, polymethacrylic acid, polyacrylic acid, and hypophosphoyl polyacrylic acid are all water-based polymers and have similar processes. Sometimes they are produced using the same polymerization reactor. However, the stirring blades used in the polymerization reactors for the production of water-based polymers are generally fixed and cannot be adjusted for different water-based polymers, resulting in poor flexibility. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a polymerization reactor for the production of aqueous polymers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polymerization reactor for the production of water-based polymers, comprising a reactor body, a reactor cover, a motor, a main shaft, a U-shaped scraper, and a perforated plate impeller. The reactor cover is connected to the upper surface of the reactor body via a flange. A motor is mounted on the center of the upper surface of the reactor cover via a motor mount. The output shaft of the motor is connected to the top of the main shaft. The main shaft is provided with a plurality of first screw holes at equal intervals, and a plurality of second screw holes are provided at the lower part of the main shaft. A first connecting sleeve is provided in the middle of the U-shaped scraper. The first connecting sleeve is inserted into the bottom of the main shaft. The first connecting sleeve has a plurality of first connecting holes. The first connecting holes correspond one-to-one with the second screw holes and are fastened together by bolts. The U-shaped scraper has triangular perforated plates on both sides of the first connecting sleeve. The inner walls of both sides of the U-shaped scraper have slots. The U-shaped scraper has a plurality of second connecting holes equidistantly provided on both sides of the scraper at the slots. A second connecting sleeve is provided at the middle position of the perforated plate blade. The second connecting sleeve is inserted into the main shaft. The second connecting sleeve has two third connecting holes. The distance between two adjacent third connecting holes is the same as the distance between two adjacent first screw holes. The third connecting holes of the second connecting sleeve correspond to the first screw holes and are fastened together with bolts. Two fourth connecting holes are provided at the outer end of the perforated plate blade. The outer edge of the perforated plate blade is inserted into the slot of the U-shaped scraper. The two fourth connecting holes correspond to the two second connecting holes and are fastened together with bolts and nuts. The U-shaped scraper and the perforated plate blades are both rotatably mounted inside the reactor.

[0006] Preferably, the present invention provides a polymerization reactor for the production of water-based polymers, wherein the upper surface of the reactor lid is provided with a plurality of thermometer ports, pressure gauge ports, manholes, nitrogen inlets, exhaust ports, a plurality of feed ports and drip ports.

[0007] Preferably, the present invention provides a polymerization reactor for the production of water-based polymers, wherein the reactor body is wrapped with a jacket, and a plurality of support seats are provided on the outer surface of the jacket. A heat exchange medium inlet is provided at the bottom of the jacket, and a heat exchange medium outlet is provided on one side of the upper part of the jacket.

[0008] Preferably, the present invention provides a polymerization reactor for the production of aqueous polymers, wherein a discharge port is provided at the bottom of the reactor body.

[0009] Preferably, the present invention provides a polymerization reactor for the production of water-based polymers, wherein the outer edge of the U-shaped scraper is movably connected to the inner wall of the reactor.

[0010] Preferably, the present invention provides a polymerization reactor for the production of aqueous polymers, wherein the perforated plate impeller and the triangular perforated plate are densely covered with small holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) The bottom of the main shaft is connected to the first connecting sleeve of the U-shaped scraper by bolts. The main shaft is also connected to the second connecting sleeve of several perforated plate blades by bolts. The two ends of the perforated plate blades are inserted into the slots inside the U-shaped scraper and are fastened by bolts and nuts. On the one hand, the number and height of the perforated plate blades can be adjusted according to different water-based polymers, which greatly improves the flexibility. On the other hand, the outer end of the perforated plate blades is matched with the slot of the U-shaped scraper and fastened by bolts and nuts, which greatly improves the stability of the perforated plate blades.

[0012] (2) The structure can scrape the inner wall of the vessel through the U-shaped scraper to prevent the material from adhering to the inner wall of the vessel. The U-shaped scraper is provided with triangular perforated plates on both sides of the first connecting sleeve to ensure the stirring effect at the bottom of the vessel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of the main shaft structure; Figure 3 This is a schematic diagram of the perforated plate impeller structure. Figure 4 This is a top view of the U-shaped scraper structure.

[0014] In the diagram: 1. Vessel body; 2. Vessel cover; 3. Motor; 4. Main shaft; 5. U-shaped scraper; 6. Orifice plate blade; 7. Motor base; 8. First screw hole; 9. Second screw hole; 10. First connecting sleeve; 11. First connecting hole; 12. Triangular orifice plate; 13. Slot; 14. Second connecting hole; 15. Second connecting sleeve; 16. Third connecting hole; 17. Fourth connecting hole; 18. Thermometer port; 19. Pressure gauge port; 20. Manhole; 21. Nitrogen inlet; 22. Exhaust port; 23. Feed inlet; 24. Dropping port; 25. Jacket; 26. Support base; 27. Heat exchange medium inlet; 28. Heat exchange medium outlet; 29. ​​Discharge port. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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 protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a polymerization reactor for the production of water-based polymers, including a reactor body 1, a reactor cover 2, a motor 3, a main shaft 4, a U-shaped scraper 5 and a perforated plate blade 6. The reactor cover 2 is connected to the upper surface of the reactor body 1 by a flange. The motor 3 is installed at the center of the upper surface of the reactor cover 2 by a motor seat 7. The output shaft of the motor 3 is connected to the top of the main shaft 4. The main shaft 4 is provided with a plurality of first screw holes 8 at equal intervals, and a plurality of second screw holes 9 are provided at the lower part of the main shaft 4. The upper surface of the vessel lid 2 is provided with several thermometer ports 18, pressure gauge ports 19, manholes 20, nitrogen inlets 21, exhaust ports 22, several feed ports 23, and drip ports 24. The thermometer ports 18 are used to install thermometers to monitor the internal temperature of the vessel body 1. The pressure gauge ports 19 are used to install pressure gauges to monitor the internal pressure of the vessel body 1. The manholes allow personnel to enter the vessel body 1 to adjust the height of the orifice plate impeller 6. The nitrogen inlets 21 are used to add nitrogen into the vessel body 1. The exhaust ports 22 are used to exhaust air. The feed ports 23 are used to add raw materials such as deionized water and aqueous polymer monomers. The drip ports 24 are used to add a mixed solution of polymer monomers and initiators. The vessel body 1 is wrapped with a jacket 25. Several support seats 26 are provided on the outer surface of the jacket 25 to support and fix the whole body. A heat exchange medium inlet 27 is provided at the bottom of the jacket 25, and a heat exchange medium outlet 28 is provided on the upper side of the jacket 25. The heat exchange medium enters and leaves the jacket 25 through the heat exchange medium inlet 27 and the heat exchange medium outlet 28, thereby achieving heating or cooling treatment of the inside of the vessel body 1. A discharge port 29 is provided at the bottom of the vessel body 1 for discharging materials. A first connecting sleeve 10 is provided in the middle of the U-shaped scraper 5. The first connecting sleeve 10 is inserted into the bottom of the main shaft 4. The first connecting sleeve 10 has a plurality of first connecting holes 11. The first connecting holes 11 correspond one-to-one with the second screw holes 9 and are fastened together by bolts. The U-shaped scraper 5 has triangular perforated plates 12 on both sides of the first connecting sleeve 10. The inner walls of both sides of the U-shaped scraper 5 have slots 13. A plurality of second connecting holes 14 are provided at equal intervals on both sides of the U-shaped scraper 5 and at the slots 13. Both the perforated plate blade 6 and the triangular perforated plate 12 are densely covered with small holes. The perforated plate structure allows for better mixing of materials. A second connecting sleeve 15 is provided in the middle of the perforated plate blade 6. The second connecting sleeve 15 is inserted into the main shaft 4. The second connecting sleeve 15 has two third connecting holes 16. The distance between two adjacent third connecting holes 16 is the same as the distance between two adjacent first screw holes 8. The third connecting holes 16 of the second connecting sleeve 15 correspond to the first screw holes 8 and are fastened together with bolts. Two fourth connecting holes 17 are provided at the outer end of the perforated plate blade 6. The outer edge of the perforated plate blade 6 is inserted into the slot 13 of the U-shaped scraper 5. The two fourth connecting holes 17 correspond to the two second connecting holes 14 and are fastened together with bolts and nuts. The U-shaped scraper 5 and the perforated plate blade 6 are both rotatably installed inside the vessel body 1. The outer edge of the U-shaped scraper 5 is in movable contact with the inner wall of the vessel body 1. The U-shaped scraper 5 is used to scrape off the material adhering to the inner wall of the vessel body 1, thus avoiding waste.

[0017] Installation method and operating principle: First, connect multiple perforated plate blades 6 to the main shaft 4 according to requirements. Specifically, insert the second connecting sleeve 15 at the middle position of the perforated plate blade 6 into the main shaft 4. Then, insert the first connecting sleeve 10 at the middle position of the U-shaped scraper 5 into the bottom of the main shaft 4. During this process, the outer edge of the perforated plate blade 6 is inserted into the groove 13 on the inner side of the U-shaped scraper 5. Then, align the first connecting hole 11 of the first connecting sleeve 10 with the second threaded hole 9 at the bottom of the main shaft 4 and tighten the connection with bolts. Next, adjust the height of each perforated plate blade 6, and align the third connecting hole 16 of the second connecting sleeve 15 with the two first threaded holes 8 of the main shaft 4 and tighten the connection with bolts. At this time, align the fourth connecting hole 17 at the outer end of the perforated plate blade 6 with the second connecting hole 14 at the groove 13 of the U-shaped scraper 5 and tighten the connection with bolts and nuts. Finally, install motor 3 on motor base 7 on the upper surface of reactor lid 2, and connect the top of main shaft 4 to the output shaft of motor 3 via coupling. After lifting reactor lid 2, place U-shaped scraper 5 and perforated plate blade 6 into reactor body 1, and connect reactor lid 2 to reactor body 1 via flange to complete the installation. During operation, add deionized water and methacrylic acid monomer to reactor body 1, start motor 3, and motor 3 drives U-shaped scraper 5 and perforated plate blade 6 to rotate via main shaft 4. At the same time, hot water / oil or steam is introduced into jacket 25 to raise the temperature to the reaction temperature. Then, add some initiator to start polymerization, and at the same time, nitrogen is introduced through nitrogen inlet 21 to remove oxygen from the reaction system. Subsequently, slowly add the mixed solution of monomer and initiator through dropper 24, controlling the drop rate to ensure a stable reaction and avoid violent polymerization. After the drop is completed, continue the reaction at a constant temperature for 4-8 hours. After the reaction is completed, cool to room temperature, and the resulting polymethacrylic acid aqueous solution is discharged from outlet 29. This utility model has a reasonable structure. The bottom of the main shaft 4 is connected to the first connecting sleeve 10 of the U-shaped scraper 5 by bolts. The main shaft 4 is also connected to the second connecting sleeve 15 of several perforated plate blades 6 by bolts. The two ends of the perforated plate blades 6 are inserted into the slots inside the U-shaped scraper 5 and are fastened by bolts and nuts. On the one hand, the number and height of the perforated plate blades 6 can be adjusted according to different water-based polymers, which greatly improves the flexibility. On the other hand, the outer ends of the perforated plate blades 6 cooperate with the slots 13 of the U-shaped scraper 5 and are fastened by bolts and nuts, which greatly improves the stability of the perforated plate blades 6. At the same time, this structure can scrape the inner wall of the vessel body 1 through the U-shaped scraper 5 to prevent the material from adhering to the inner wall of the vessel body 1. Furthermore, triangular perforated plates 12 are provided on both sides of the first connecting sleeve 10 of the U-shaped scraper 5 to ensure the stirring effect at the bottom of the vessel body 1.

[0018] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0019] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A polymerization reactor for the production of aqueous polymers, characterized in that: The vessel includes a vessel body (1), a vessel cover (2), a motor (3), a main shaft (4), a U-shaped scraper (5), and a perforated plate blade (6). The vessel body (1) is connected to the vessel cover (2) via a flange. The center of the upper surface of the vessel cover (2) is provided with a motor (3) via a motor mount (7). The output shaft of the motor (3) is connected to the top of the main shaft (4). The main shaft (4) is provided with several first screw holes (8) at equal intervals. The lower part of the main shaft (4) is provided with several second screw holes (9). A first connecting sleeve (10) is provided in the middle of the U-shaped scraper (5). The first connecting sleeve (10) is inserted into the bottom of the main shaft (4). The first connecting sleeve (10) has a plurality of first connecting holes (11). The first connecting holes (11) correspond one-to-one with the second screw holes (9) and are fastened together by bolts. The U-shaped scraper (5) has triangular perforated plates (12) on both sides of the first connecting sleeve (10). The inner walls of both sides of the U-shaped scraper (5) have slots (13). The U-shaped scraper (5) has a plurality of second connecting holes (14) equidistantly provided on both sides of the U-shaped scraper (5) at the slots (13). A second connecting sleeve (15) is provided in the middle of the perforated plate blade (6). The second connecting sleeve (15) is inserted into the main shaft (4). The second connecting sleeve (15) has two third connecting holes (16). The distance between two adjacent third connecting holes (16) is the same as the distance between two adjacent first screw holes (8). The third connecting holes (16) of the second connecting sleeve (15) correspond to the first screw holes (8) and are fastened together with bolts. The outer end of the perforated plate blade (6) has two fourth connecting holes (17). The outer edge of the perforated plate blade (6) is inserted into the slot (13) of the U-shaped scraper (5). The two fourth connecting holes (17) correspond to the two second connecting holes (14) and are fastened together with bolts and nuts. The U-shaped scraper (5) and the perforated plate blade (6) are both rotatably mounted inside the vessel body (1).

2. The polymerization reactor for producing aqueous polymers according to claim 1, characterized in that: The upper surface of the lid (2) is provided with several thermometer ports (18), pressure gauge ports (19), manholes (20), nitrogen inlets (21), exhaust ports (22), several feed inlets (23) and drip inlets (24).

3. The polymerization reactor for producing aqueous polymers according to claim 1, characterized in that: The vessel body (1) is wrapped with a jacket (25), and a number of support seats (26) are provided on the outer surface of the jacket (25). A heat exchange medium inlet (27) is provided at the bottom of the jacket (25), and a heat exchange medium outlet (28) is provided on one side of the upper part of the jacket (25).

4. The polymerization reactor for producing aqueous polymers according to claim 1, characterized in that: The bottom of the vessel body (1) is provided with a discharge port (29).

5. The polymerization reactor for producing aqueous polymers according to claim 1, characterized in that: The outer edge of the U-shaped scraper (5) is in contact with the inner wall of the vessel body (1).

6. The polymerization reactor for producing aqueous polymers according to claim 1, characterized in that: Both the perforated plate blade (6) and the triangular perforated plate (12) are densely covered with small holes.

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