Efficient reaction kettle for mixing acrylic acid

Abstract

The utility model relates to the technical field of chemical reaction, and discloses an efficient reaction kettle for mixing acrylic acid, which comprises a kettle body, a kettle cover is arranged at the top of the kettle body, a stirring mechanism is fixedly connected to the top of the kettle cover, a purification mechanism is arranged at the bottom of the kettle body, and clamping mechanisms are arranged on two sides of the kettle body. The first stirring paddle is an anchor type stirring paddle and is tightly attached to the inner wall of the kettle body, materials attached to the wall surface can be effectively scraped, the materials are prevented from being coked, meanwhile, materials close to the wall are pushed to be mixed, the second stirring paddle is a turbo type stirring paddle, powerful radial flow and axial flow can be generated when the second stirring paddle rotates at a high speed, and the stirring effect is good. And the third stirring paddle is arranged to be a frame type stirring paddle, and the third stirring paddle focuses on the turning of the materials at the lower layer to ensure that the materials at the bottom can fully participate in the reaction, so that the materials in the kettle form an all-dimensional and multi-layer flow mixing mode.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction technology, and in particular to a high-efficiency reaction vessel for mixing acrylic acid. Background Technology

[0002] With the rapid development of modern industry, acrylic acid, as an extremely important organic chemical raw material, has indispensable applications in many fields such as coatings, adhesives, textile auxiliaries, leather treatment, and superabsorbent resins. Its market demand continues to rise, and the requirements for acrylic acid production processes and related equipment are becoming increasingly stringent.

[0003] In the synthesis and subsequent modification of acrylic acid, the mixing reaction stage plays a crucial role. However, traditional reactors used for mixing acrylic acid have many drawbacks. On the one hand, the material mixing method in traditional reactors is relatively crude, often using simple single-layer paddle stirring, resulting in poor stirring effect and uneven material flow within the reactor, which easily leads to local concentration differences and inconsistent reaction progress. On the other hand, the traditional connection between the reactor and the reactor lid often uses a combination of bolts and nuts. However, bolts are exposed to the working environment for a long time, making them susceptible to corrosion and loosening, which in turn affects the sealing performance of the reactor. Furthermore, disassembly and installation are inconvenient, and a large amount of toxic gas is generated during the material feeding process, which endangers the health of the workers.

[0004] Therefore, those skilled in the art have provided a high-efficiency reaction vessel for mixing acrylic acid to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the problems of traditional reactors, such as simplistic stirring methods, inconvenient disassembly of the reactor body and lid, and the generation of toxic gases during material discharge, this invention provides a high-efficiency reactor for acrylic acid mixing, employing the following technical solution:

[0006] A high-efficiency reaction vessel for acrylic acid mixing includes a vessel body, a vessel cover at the top of the vessel body, a stirring mechanism fixedly connected to the top of the vessel cover, a purification mechanism at the bottom of the vessel body, and locking mechanisms on both sides of the vessel body. The stirring mechanism includes a sealing plate, the bottom of which is fixedly connected to the vessel cover. A motor is fixedly connected to the top of the sealing plate, and the motor output end passes through the top of the vessel cover and is fixedly connected to a rotating rod. A first stirring paddle is fixedly connected to the top of the rotating rod. A second stirring paddle is located at the bottom of the first stirring paddle, one side of which is fixedly connected to the rotating rod. A third stirring paddle is located at the bottom of the second stirring paddle, one side of which is fixedly connected to the rotating rod. A fourth stirring paddle is located at the bottom of the third stirring paddle, one side of which is fixedly connected to the rotating rod. The purification mechanism includes a collection box, the top of which is fixedly connected to the vessel body. A sieve plate is movably connected to one side of the inner cavity of the collection box. A gas supply pipe is fixedly connected to the top of the collection box. A filter box is fixedly connected to the side, and a fan is fixedly connected to the top of the filter box. A first filter plate is movably connected to one side of the inner cavity of the filter box, and a second filter plate is set at the bottom of the first filter plate. Both sides of the second filter plate are movably connected to the filter box. There are four locking mechanisms to effectively improve the stability when the reactor body and the reactor lid are connected. The other side of the rotating rod extends to the bottom of the reactor body, which can make the material inside the reactor body fully stirred and avoid the material agglomeration. There are multiple second stirring paddles to improve the efficiency of stirring. A discharge pipe is fixedly connected to one side of the collection box for external water pump to extract the material inside the collection box. The screen plate can screen the material about to enter the collection box to avoid the mixing of undispersed material with the material entering the collection box, which would affect the material quality. A caustic soda slurry is opened on the surface of the first filter plate for storing caustic soda flakes. A sleeve for storing activated carbon is fixedly connected to the surface of the second filter plate. An exhaust fan is set on one side of the filter box for discharging the treated gas.

[0007] Optionally, the locking mechanism includes a movable rod movably connected to the vessel body. A lead screw is threaded into the inner cavity of the movable rod. A movable cavity is formed on one side of the vessel lid. A spring is fixedly connected to one side of the inner cavity of the movable cavity. A movable block is provided on one side of the spring. A push rod is fixedly connected to one side of the movable block. One side of the push rod passes through the inner cavity of the movable cavity and extends to the surface of the vessel lid. A slot is formed on one side of the movable block. One side of the movable rod is slidably connected to the slot. The movable rod is connected to the vessel body via a pin. A limit block is fixedly connected to one side of the lead screw. A limit ring is provided on one side of the limit block to increase the contact area with the vessel lid. When the motor runs, vibration will occur. Without affecting the sealing performance of the vessel body, the distance between the limit ring and the vessel lid can be adjusted by rotating the lead screw to avoid damage to the locking mechanism due to long-term vibration.

[0008] Optionally, a feed pipe is fixedly connected to one side of the top of the vessel lid, and a sealing cap is hinged to the top of the feed pipe. The feed pipe is located on the side of the motor and is used to convey materials into the vessel. A rubber gasket is fixedly connected to the bottom of the sealing cap to increase the airtightness of the feed pipe.

[0009] Optionally, a pressure gauge is provided on one side of the sealing plate. The bottom of the pressure gauge is fixedly connected to the vessel lid. The pressure gauge can detect the pressure inside the vessel in real time and transmit it to the staff to avoid accidents.

[0010] Optionally, a sealing gasket is fixedly connected to the top of the vessel body, and a groove is opened on the surface of the sealing gasket. A locking block is fixedly connected to the bottom of the vessel lid, and one side of the locking block is slidably connected to the groove. The sealing gasket is made of flexible, high-temperature resistant, and corrosion-resistant rubber material to increase the sealing between the vessel body and the vessel lid. The cross-section of both the groove and the locking block is dovetail-shaped to avoid the vessel lid from moving left and right due to motor vibration.

[0011] Optionally, a conveying pipe is fixedly connected to the bottom of the vessel body. A valve body is provided in the inner cavity of the conveying pipe. A rotating handle is fixedly connected to one side of the valve body. The other side of the rotating handle passes through the inner cavity of the conveying pipe and extends to the surface of the conveying pipe. The valve body is used to control the material discharge of the vessel body. The rotating handle allows the operator to control the material discharge of the vessel body by rotating the handle from the outside, thus improving the convenience of material discharge.

[0012] Optionally, the material collection box has sliding grooves on both sides, and the screen plate is slidably connected to the sliding grooves on both sides. The sliding grooves can limit the range of motion of the screen plate, so that the screen plate can be completely pulled out from inside the material collection box, so that the staff can process the material on the surface of the screen plate.

[0013] Optionally, a jacket is fixedly connected to the surface of the vessel body, a partition is fixedly connected to the inner cavity of the jacket, a serpentine tube is provided at the bottom of the partition, one side of the serpentine tube is fixedly connected to the vessel body, the space formed between the jacket and the vessel body is used to add heating medium, the serpentine tube is used to add cooling medium, the top surface of the jacket is provided with a feed inlet for the serpentine tube and the jacket, and the bottom of the jacket is provided with a discharge outlet.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. This utility model features an anchor-type first stirring paddle that is closely attached to the inner wall of the vessel, effectively scraping off materials adhering to the wall surface to prevent coking and simultaneously pushing near-wall materials into the mixing process. The second stirring paddle is a turbine-type stirring paddle, which generates strong radial and axial flows when rotating at high speed, allowing materials to disperse rapidly within the vessel and enhancing the mixing effect. The third stirring paddle is a frame-type stirring paddle, which focuses on agitating the lower layer of materials to ensure that the bottom materials also fully participate in the reaction. The fourth stirring paddle is a spiral-type stirring paddle, which can stir the materials in the conveying pipe to prevent internal blockage. The four stirring paddles work together to create an all-round, multi-layered flow mixing mode for the materials in the vessel, improving the efficiency of the mixing process.

[0016] 2. This utility model, through the setting of the purification mechanism, can filter the toxic gases generated during the feeding of the vessel, converting harmful gases into harmless or less harmful substances, significantly reducing the emission of harmful gases. The setting of the sieve plate can intercept and screen the materials that are not evenly stirred inside the vessel, improving the quality of the materials. By placing caustic soda flakes on the surface of the first filter plate, a neutralization reaction can be completed in a short time, rapidly reducing the concentration of acidic components in the gas, enabling the purification mechanism to efficiently treat large amounts of waste gas containing acidic toxic gases, ensuring the stable operation of the purification system. Activated carbon is placed on the surface of the second filter plate, which can further treat the gas after the initial purification by caustic soda flakes, further removing various residual pollutants, so that the final emitted gas meets higher purification standards, ensuring that the waste gas emission meets strict environmental protection requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the stirring mechanism of this utility model.

[0019] Figure 3 This is a schematic diagram of the purification mechanism of this utility model.

[0020] Figure 4 This is a schematic diagram of the locking mechanism of this utility model.

[0021] Figure 5 This is a schematic diagram showing the connection between the jacket and the vessel body of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Kettle body; 2. Kettle lid; 3. Stirring mechanism; 301. Sealing plate; 302. Motor; 303. Rotating rod; 304. First stirring paddle; 305. Second stirring paddle; 306. Third stirring paddle; 307. Fourth stirring paddle; 4. Purification mechanism; 401. Collection box; 402. Sieve plate; 403. Gas supply pipe; 404. Filter box; 405. Fan; 406. First filter plate; 407. Second filter plate 5. Plate; 501. Engaging mechanism; 502. Screw; 503. Movable cavity; 504. Spring; 505. Movable block; 506. Push rod; 507. Slot; 6. Feed pipe; 7. Sealing cover; 8. Pressure gauge; 9. Sealing gasket; 10. Groove; 11. Locking block; 12. Feed pipe; 13. Valve body; 14. Rotary handle; 15. Slide groove; 16. Jacket; 17. Partition plate; 18. Coil. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] Example 1:

[0026] Please refer to Figure 1-5 A high-efficiency reaction vessel for mixing acrylic acid includes a vessel body 1, a vessel cover 2 on the top of the vessel body 1, a stirring mechanism 3 fixedly connected to the top of the vessel cover 2, a purification mechanism 4 at the bottom of the vessel body 1, and locking mechanisms 5 on both sides of the vessel body 1. The stirring mechanism 3 includes a sealing plate 301, the bottom of which is fixedly connected to the vessel cover 2, and a motor 302 fixedly connected to the top of the sealing plate 301. The output end of the motor 302 passes through the top of the vessel cover 2 and is fixedly connected to a rotating rod 303. A first stirring paddle 304 is fixedly connected to the top of the rotating rod 303, a second stirring paddle 305 is provided at the bottom of the first stirring paddle 304, one side of the second stirring paddle 305 is fixedly connected to the rotating rod 303, and a third stirring paddle 306 is provided at the bottom of the second stirring paddle 305. The third stirring paddle 306 is fixedly connected to the rotating rod 303 on one side. A fourth stirring paddle 307 is provided at the bottom of the third stirring paddle 306. The fourth stirring paddle 307 is fixedly connected to the rotating rod 303 on one side. The purification mechanism 4 includes a collection box 401. The top of the collection box 401 is fixedly connected to the vessel body 1. A sieve plate 402 is movably connected to one side of the inner cavity of the collection box 401. An air supply pipe 403 is fixedly connected to the top of the collection box 401. A filter box 404 is fixedly connected to one side of the air supply pipe 403. A fan 405 is fixedly connected to the top of the filter box 404. A first filter plate 406 is movably connected to one side of the inner cavity of the filter box 404. A second filter plate 407 is provided at the bottom of the first filter plate 406. Both sides of the second filter plate 407 are movably connected to the filter box 404.

[0027] In this embodiment: there are four locking mechanisms 5, which effectively improves the stability when the vessel body 1 is connected to the vessel cover 2. The other side of the rotating rod 303 extends to the bottom of the vessel body 1, which can make the material inside the vessel body 1 fully stirred and avoid the material from agglomerating. There are multiple second stirring paddles 305 to improve the efficiency of stirring. A discharge pipe is fixedly connected to one side of the collection box 401 for external water pump to extract the material inside the collection box 401. The sieve plate 402 can screen the material about to enter the collection box 401 to avoid the mixing of undispersed material with the material entering the collection box 401, which would affect the material quality. The surface of the first filter plate 406 is provided with a caustic soda trough for storing caustic soda. The surface of the second filter plate 407 is fixedly connected with a sleeve for storing activated carbon. A blower is provided on one side of the filter box 404 to discharge the treated gas.

[0028] Example 2:

[0029] Reference Figure 1-5 The locking mechanism 5 includes a movable rod 501, which is movably connected to the vessel body 1. A lead screw 502 is threaded into the inner cavity of the movable rod 501. A movable cavity 503 is opened on one side of the vessel cover 2. A spring 504 is fixedly connected to one side of the inner cavity of the movable cavity 503. A movable block 505 is provided on one side of the spring 504. A push rod 506 is fixedly connected to one side of the movable block 505. One side of the push rod 506 passes through the inner cavity of the movable cavity 503 and extends to the surface of the vessel cover 2. A slot 507 is opened on one side of the movable block 505. One side of the movable rod 501 is slidably connected to the slot 507. A feed pipe 6 is fixedly connected to one side of the top of the vessel cover 2. A sealing cap 7 is hinged to the top of the feed pipe 6. A pressure gauge 8 is provided on one side of the sealing plate 301. The bottom of the pressure gauge 8 is connected to the... The lid 2 is fixedly connected, and the top of the body 1 is fixedly connected to a sealing gasket 9. The surface of the sealing gasket 9 has a groove 10. The bottom of the lid 2 is fixedly connected to a locking block 11. One side of the locking block 11 is slidably connected to the groove 10. The bottom of the body 1 is fixedly connected to a conveying pipe 12. The inner cavity of the conveying pipe 12 is provided with a valve body 13. One side of the valve body 13 is fixedly connected to a rotating handle 14. The other side of the rotating handle 14 passes through the inner cavity of the conveying pipe 12 and extends to the surface of the conveying pipe 12. The two sides of the collection box 401 are provided with sliding grooves 15. Both sides of the sieve plate 402 are slidably connected to the sliding grooves 15. The surface of the body 1 is fixedly connected to a jacket 16. The inner cavity of the jacket 16 is fixedly connected to a partition 17. The bottom of the partition 17 is provided with a snake tube 18. One side of the snake tube 18 is fixedly connected to the body 1.

[0030] In this embodiment: the movable rod 501 is connected to the vessel body 1 via a pin; a limit block is fixedly connected to one side of the lead screw 502; a limit ring is provided on one side of the limit block to increase the contact area with the vessel lid 2; the motor 302 will vibrate during operation; without affecting the sealing performance of the vessel body 1, the distance between the limit ring and the vessel lid 2 can be adjusted by rotating the lead screw 502 to avoid damage to the locking mechanism 5 due to long-term vibration; the feed pipe 6 is located on one side of the motor 302 and is used to convey materials into the vessel body 1; a rubber gasket is fixedly connected to the bottom of the sealing cover 7 to increase the sealing performance of the feed pipe 6; the pressure gauge 8 can detect the pressure inside the vessel body 1 in real time and transmit it to the personnel to avoid accidents; the sealing gasket 9 is made of flexible, high-temperature resistant, and corrosion-resistant rubber material to increase... The sealing between the vessel body 1 and the vessel cover 2 is ensured by the dovetail-shaped cross-sections of the slot 10 and the locking block 11 to prevent the vessel cover 2 from moving left and right due to the vibration of the motor 302. The valve body 13 is used to control the material discharge of the vessel body 1. The rotating handle 14 allows the operator to control the material discharge of the vessel body 1 by rotating the rotating handle 14 from the outside, improving the convenience of material discharge. The sliding groove 15 can limit the range of motion of the sieve plate 402, allowing the sieve plate 402 to be completely pulled out from the inside of the collection box 401, so that the operator can process the material on the surface of the sieve plate 402. The space formed between the jacket 16 and the vessel body 1 is used to add heating medium. The serpentine tube 18 is used to add cooling medium. The top surface of the jacket 16 is provided with the serpentine tube 18 and the inlet of the jacket 16, and the bottom is provided with the outlet.

[0031] The implementation principle of this utility model is as follows: During use, the operator opens the sealing cover 7 and adds the material into the vessel body 1 through the feed pipe 6. The motor 302 is started, and the motor 302 drives the rotating rod 303 to rotate. The rotating rod 303 drives the first stirring paddle 304, the second stirring paddle 305, the third stirring paddle 306, and the fourth stirring paddle 307 to rotate together. The first stirring paddle 304 effectively scrapes off the material adhering to the wall surface; the second stirring paddle 305 quickly disperses the material in the vessel, enhancing the mixing effect; the third stirring paddle 306 agitates the lower layer of material; and the fourth stirring paddle 307 stirs the material in the feed pipe 12. When heating is required, a heating medium is added to the feed inlet on one side of the jacket 16. The medium enters the cavity formed between the vessel body 1 and the jacket 16 through the flow channel formed by the baffle 17, heating the material inside the vessel body 1. The baffle 17 is spiral in shape, which can disrupt the laminar boundary layer, improve the heat transfer coefficient, and reduce the flow dead zone. When cooling of the internal material is required, cooling medium is filled into the coil 18 through the feed port of the coil 18. Because the coil 18 is close to the outer wall of the vessel body 1, the cooling medium directly absorbs the heat of the vessel body 1 through the wall of the coil 18, resulting in a short heat transfer path, low thermal resistance, and high cooling efficiency. When discharging, the operator rotates the handle 14, which drives the valve body 13 to rotate, allowing the material to enter the collection box 401 from the conveying pipe 12. After being screened by the sieve plate 402, the material enters the collection box. At the bottom of 401, the fan 405 starts to draw the gas generated by the material inside the collection box 401 into the filter box 404 through the gas delivery pipe 403. After the gas is filtered by the first filter plate 406, it is filtered again by the second filter plate 407. The filtered gas is then discharged from the inner cavity of the filter box 404 by the exhaust fan. When it is necessary to remove the lid 2 to repair the internal device of the vessel body 1, pull the push rod 506 to one side. The push rod 506 drives the movable block 505 to move. The movable block 505 drives the spring 504 to move. The spring 504 is in a compressed state at this time. Rotate the movable rod 501 to one side to disengage the movable rod 501 from the slot 507, and the lid 2 can be removed. At this time, the spring 504 automatically rebounds and... When the movable block 505 resets, it drives the push rod 506 to move. During installation, the movable rod 501 is rotated to one side, which drives the lead screw 502 to move. The lead screw 502 drives the limit block and the limit ring to move. When the movable rod 501 contacts the movable block 505, the movable block 505 is tilted on one side and will be squeezed and moved to one side by the movable rod 501. The movement of the movable block 505 compresses the spring 504 and drives the push rod 506 to move. After the movable rod 501 enters the slot 507, the operator can rotate the limit block, which drives the lead screw 502 to rotate. The lead screw 502 drives the limit ring to move, which can adjust the distance between the limit ring and the lid 2 to avoid damage to the locking mechanism 5 due to long-term vibration.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A high-efficiency reactor for acrylic acid mixing, comprising a reactor body (1), characterized in that: The kettle body (1) top is provided with kettle cover (2), the kettle cover (2) top fixedly connected with stirring mechanism (3), the kettle body (1) bottom is provided with purification mechanism (4), the kettle body (1) both sides are provided with engagement mechanism (5); The stirring mechanism (3) includes a sealing plate (301), the sealing plate (301) bottom is fixedly connected with kettle cover (2), the sealing plate (301) top is fixedly connected with motor (302), the motor (302) output end penetrates the kettle cover (2) top and is fixedly connected with the rotating rod (303), the rotating rod (303) top is fixedly connected with the first stirring paddle (304), the first stirring paddle (304) bottom is provided with the second stirring paddle (305), the second stirring paddle (305) one side is fixedly connected with the rotating rod (303), the second stirring paddle (305) bottom is provided with the third stirring paddle (306), the third stirring paddle (306) one side is fixedly connected with the rotating rod (303), the third stirring paddle (306) bottom is provided with the fourth stirring paddle (307), the fourth stirring paddle (307) one side is fixedly connected with the rotating rod (303); The purification mechanism (4) includes a material collecting box (401), the material collecting box (401) top is fixedly connected with kettle body (1), the material collecting box (401) inner chamber one side is movably connected with sieve plate (402), the material collecting box (401) top is fixedly connected with gas delivery pipe (403), the gas delivery pipe (403) one side is fixedly connected with filter box (404), the filter box (404) top is fixedly connected with fan (405), the filter box (404) inner chamber one side is movably connected with first filter plate (406), the first filter plate (406) bottom is provided with second filter plate (407), the second filter plate (407) both sides are movably connected with filter box (404).

2. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The engagement mechanism (5) includes a movable rod (501), the movable rod (501) is movably connected with kettle body (1), the movable rod (501) inner chamber is threadedly connected with lead screw (502), the kettle cover (2) one side is provided with movable cavity (503), the movable cavity (503) inner chamber one side is fixedly connected with spring (504), the spring (504) one side is provided with movable block (505), the movable block (505) one side is fixedly connected with push rod (506), the push rod (506) one side penetrates the movable cavity (503) inner chamber and extends to the kettle cover (2) surface, the movable block (505) one side is provided with clamping groove (507), the movable rod (501) one side is slidably connected with clamping groove (507).

3. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The kettle cover (2) top one side is fixedly connected with feeding pipe (6), the feeding pipe (6) top is hingedly connected with sealing cover (7).

4. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The sealing plate (301) one side is provided with pressure gauge (8), the pressure gauge (8) bottom is fixedly connected with kettle cover (2). The sealing plate (301) one side is provided with pressure gauge (8), the pressure gauge (8) bottom is fixedly connected with kettle cover (2).

5. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The kettle body (1) top is fixedly connected with sealing gasket (9), the sealing gasket (9) surface is set up with notch (10), the kettle cover (2) bottom is fixedly connected with the clamping block (11), the clamping block (11) one side is slidably connected with notch (10).

6. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The kettle body (1) bottom is fixedly connected with the feed pipe (12), the feed pipe (12) inner chamber is provided with valve body (13), one side of valve body (13) is fixedly connected with the handle (14), the handle (14) other side penetrates the feed pipe (12) inner chamber and extends to the feed pipe (12) surface.

7. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The aggregate box (401) both sides are provided with chute (15), the sieve plate (402) both sides are slidably connected with chute (15).

8. The high-efficiency reaction kettle for acrylic acid mixing according to claim 1, characterized in that: The kettle body (1) surface is fixedly connected with the jacket (16), the jacket (16) inner chamber is fixedly connected with the partition (17), the partition (17) bottom is provided with the snake tube (18), one side of snake tube (18) is fixedly connected with kettle body (1).

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