Reaction device for producing sodium methallyl sulfonate

Abstract

The invention discloses a reaction device for producing sodium methallyl sulfonate, and relates to the technical field of chemical preparation, the reaction device comprises a tank body, the top surface of the tank body is fixedly provided with a sealing cover through a bolt, the inside of the tank body is fixedly connected with a preparation tank for chemical reaction, an interlayer for storing condensate is formed between the tank body and the preparation tank, and the interlayer is fixedly connected with the tank body. A sealing cover is arranged in the preparation tank, a mixing mechanism used for uniformly mixing chemical agents is arranged in the sealing cover, a slapping mechanism used for slapping the chemical agents in the preparation tank is arranged in the preparation tank, and an auxiliary mechanism used for mixing the chemical agents at the bottom of the preparation tank is arranged in the preparation tank. Compared with simultaneous stirring in the transverse direction and the vertical direction, the shearing efficiency of coaxial and opposite-direction rotation is improved by about 40%, the reaction time can be shortened by 20%-30%, vortexes generated by coaxial and opposite-direction rotation interfere with each other, symmetrical flowing can be broken, laminar flow dead zones in the tank can be eliminated, and stirring blind zones on the edges of the top and the bottom of the tank are avoided.

Description

Technical Field

[0001] The present invention relates to acyclic or carbocyclic compounds, and more specifically to the technical field of chemical preparation, and particularly to a reaction device for the production of sodium methallylsulfonate. Background Art

[0002] Sodium methallylsulfonate is an important sulfonic acid monomer, which is a white crystalline powder, easily soluble in water, and is usually used as the third monomer for the production of acrylic fibers, as well as various reactive emulsifiers, flocculants, water reducers for commercial concrete, etc.

[0003] However, there are some problems in the existing synthesis methods of sodium methallylsulfonate. For example, the reaction efficiency of the existing synthesis methods of sodium methallylsulfonate is relatively low because the mixing is uniform, which means that in the same period of time, the amount of sodium methallylsulfonate that can be produced is less, which is undoubtedly a huge challenge for large-scale production. The low reaction efficiency not only increases the production cost but also limits its application in a wider range of fields. Moreover, for the existing Chinese utility model patent with the reference publication number: CN221714313U, which discloses a sodium methallylsulfonate synthesis device, there are still the following deficiencies in actual use: it drives a vertical integrated stirring fan and a horizontal integrated stirring fan by a motor to stir in two directions, horizontal and vertical at the same time, and there are still uncovered mixing blind spots at the edge and bottom of the tank body, which will lead to uneven distribution of the components of the sodium methallylsulfonate product, thus affecting the uniformity and stability of the product and resulting in differences in product quality between different batches or within the same batch. Summary of the Invention

[0004] In order to improve the problems of relatively low reaction efficiency and the existence of mixing blind spots at the edge and bottom of the tank body, the present invention provides a reaction device for the production of sodium methallylsulfonate.

[0005] The reaction device for the production of sodium methallylsulfonate provided by the present invention adopts the following technical solutions: A reaction device for the production of sodium methallylsulfonate includes a tank body, the top surface of the tank body is fixedly provided with a cover by bolts, a preparation tank for chemical reaction is fixedly connected inside the tank body, and an interlayer for storing condensate is formed between the tank body and the preparation tank; A mixing mechanism for uniformly mixing chemical agents is arranged inside the cover; A slapping mechanism for slapping the chemical agents inside the preparation tank is arranged inside the preparation tank; An auxiliary mechanism for mixing the chemical agents at the bottom of the tank is arranged inside the preparation tank.

[0006] By adopting the above technical solution, the tank body serves as a reaction vessel, and the interlayer is used for circulating condensate or cooling medium. The reaction temperature is maintained by controlling the temperature of the interlayer, while the reaction heat is absorbed to prevent local overheating. The preparation tank provides space for chemical reactions, the mixing mechanism realizes efficient mixing of reactants, improves the mass transfer efficiency, the slapping mechanism breaks the fluid laminar flow, eliminates the mixing dead zone, prevents particle agglomeration, and the auxiliary mechanism disturbs the bottom fluid to prevent sediment accumulation and ensure the uniformity of the reaction.

[0007] Preferably, the mixing mechanism includes a connecting ring fixedly connected inside the cover. An auxiliary frame is fixedly connected through the inside of the connecting ring. A motor is fixedly connected inside the cover. A first toothed ring fixedly connected to the output shaft of the motor is rotatably connected inside the auxiliary frame, and the output shaft of the motor penetrates and is rotatably connected inside the auxiliary frame.

[0008] By adopting the above technical solution, the connecting ring and the auxiliary frame are fixed transmission components, ensuring the stable connection between the gear set and the motor. The motor drives the first toothed ring to rotate, serving as the power input source.

[0009] Preferably, a first gear rotatably connected to the connecting ring is meshed inside the first toothed ring. A second gear rotatably connected to the connecting ring is meshed on the outer surface of the first gear. A second toothed ring rotatably connected to the connecting ring is meshed on the outer surface of the second gear.

[0010] By adopting the above technical solution, the first gear, the second gear and the second toothed ring transmit power through gear meshing, converting the rotational motion of the first toothed ring into the coaxial reverse rotation of the second toothed ring, realizing the reverse rotation of the inner and outer stirring shafts.

[0011] Preferably, a first rotating shaft rotatably connected through the auxiliary frame is fixedly connected inside the first toothed ring. A second rotating shaft rotatably connected through the auxiliary frame is fixedly connected to the side of the second toothed ring away from the second gear, and the first rotating shaft penetrates and is rotatably connected inside the second rotating shaft.

[0012] By adopting the above technical solution, the first rotating shaft and the second rotating shaft respectively drive the first conical cylinder and the second conical cylinder to realize coaxial reverse rotation.

[0013] Preferably, a first conical cylinder is fixedly connected to the side of the second rotating shaft away from the second toothed ring. A plurality of first stirring plates are fixedly arranged in a circumferential array on the outer surface of the first conical cylinder. A plurality of first round holes are linearly arranged inside the first stirring plates. A second conical cylinder is fixedly connected to the outer surface of the first rotating shaft away from the first toothed ring. Stirring plates are fixedly arranged in a circumferential array on the outer surface of the second conical cylinder. A plurality of second round holes are linearly arranged inside the stirring plates.

[0014] By adopting the above technical solution, the conical cylinder 1 and the stirring plate 1 are of conical structure to enhance the radial flow. The round hole 1 of the stirring plate 1 forms a micro-jet to break the particle aggregates (such as undissolved sodium sulfite). The conical cylinder 2 and the stirring plate 2 rotate in opposite directions, and the round hole 2 of the stirring plate 2 generates a reverse jet, which cooperates with the stirring plate 1 to form a three-dimensional turbulent flow and eliminate the laminar dead zone.

[0015] Preferably, the flapping mechanism includes a connecting frame fixedly connected to the bottom surface of the connecting ring. A tooth column fixedly connected to the first rotating shaft is rotatably connected inside the connecting frame. The first rotating shaft penetrates and is rotatably connected inside the connecting frame. Two sides of the connecting frame are rotatably connected with a third gear that is meshed and adapted to the tooth column.

[0016] By adopting the above technical solution, the connecting frame provides support for the rotation of the tooth column. The tooth column is driven by the rotating shaft to rotate forward and backward, and drives the third gear to rotate, converting the rotational motion into the reciprocating swing of the flapping plate.

[0017] Preferably, an auxiliary plate is fixedly connected to the top surface of the cover. A first chute is symmetrically opened at the eccentric position of the auxiliary plate. An L-shaped flapping plate that is slidably adapted to the first chute is fixedly connected to the outer surface of the third gear.

[0018] By adopting the above technical solution, the first chute provides a limit for the swing of the L-shaped flapping plate, avoiding the swing of the L-shaped flapping plate from affecting the operation of other structures. The L-shaped flapping plate swings along the first chute, periodically flapping the fluid, dividing the upward flow and the downward flow, and inducing turbulence.

[0019] Preferably, a number of conical holes are linearly arrayed on the outer surface of the L-shaped flapping plate. A protective sleeve fixedly connected to the L-shaped flapping plate is fixedly connected to one side of the auxiliary plate at the eccentric position. A rotating cylinder fixedly connected to the first rotating shaft is rotatably connected inside the auxiliary plate. A dropper is fixedly connected through the inside of the rotating cylinder.

[0020] By adopting the above technical solution, the conical holes with large entrances and small exits form a high-pressure jet at the moment of flapping, accelerating the particle dispersion. The protective sleeve ensures the sealing of the preparation tank. The rotating dropper rotates with the first rotating shaft, and uniformly disperses methyl allyl chloride by using centrifugal force, avoiding side reactions caused by too high local concentration.

[0021] Preferably, the auxiliary mechanism includes a lead screw fixedly connected to one side of the first rotating shaft. A conical cylinder 3 is slidably connected to the outer surface of the lead screw. A fixed column rotatably connected to the lead screw is fixedly connected to the inner wall of the preparation tank. A fixing plate is fixedly connected to the side of the fixed column away from the preparation tank.

[0022] By adopting the above technical solution, the lead screw is driven by the first rotating shaft to rotate forward and backward, providing power for the movement of the conical cylinder 3. The conical cylinder 3 moves up and down along the lead screw, and pushes the sliding plate to expand through its inclined surface.

[0023] Preferably, a second chute is annularly and arrayedly formed inside the fixing plate. A sliding plate that abuts against the third conical cylinder is slidably connected inside the second chute. A push plate is fixedly connected to the side of the sliding plate away from the lead screw. A plurality of third round holes are linearly and arrayedly formed inside the push plate. A return spring is fixedly connected between the fixing plate and the push plate.

[0024] By adopting the above technical solution, when the push plate expands, it disturbs the bottom fluid, and the third round holes form reverse jets to remove sediments. The return spring provides a pre-tightening force to ensure quick reset. The second chute guides the movement of the sliding plate to reduce frictional losses.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The rotation of the first toothed ring drives the rotation of the first gear, the second gear, and the second toothed ring, and further rotates the chemical agent coaxially and in opposite directions inside the preparation tank. When the inner and outer paddle blades rotate in opposite directions, a high shear rate region (such as Couette flow) is formed in the contact area of the fluid, accelerating the microscopic mixing of the materials. Compared with the simultaneous stirring in the horizontal and vertical directions, the shear efficiency of the coaxial and opposite rotation is increased by about 40%, the reaction time can be shortened by 20%-30%, and the vortices generated by the coaxial and opposite rotation interfere with each other, which can break the symmetric flow, eliminate the laminar dead zone inside the tank, and avoid the stirring blind zones at the top and bottom edges of the tank.

[0026] 2. The rotation of the tooth post drives the third gear to swing reciprocally, and the swing angle is 30°-60°. When the flapping plate swings, it flaps the chemical agent in the reaction tank, dividing the fluid in the tank into an upward flow region and a downward flow region, breaking the symmetric flow field of the traditional stirring, inducing three-dimensional turbulence, and a local high-pressure region is formed at the moment of flapping due to the conical round holes (large inlet and small outlet) on the flapping plate, and the fluid passes through the round holes at a high speed to generate microjets, effectively breaking the particle aggregates (such as un-dissolved sodium sulfite particles).

[0027] 3. Through the reciprocating movement of the third conical cylinder in the vertical direction, the push plate is driven to expand and contract reciprocally, directly disturbing the bottom fluid of the tank, breaking the bottom laminar flow region of the traditional stirring. When the push plate moves, a local high-pressure difference is formed in the round holes, and the fluid passes through the channels at a high speed to generate microjets, the shear rate is increased, preventing particle sedimentation. The movement of the push plate is linked with the upper coaxial and opposite stirring to form an axial, radial, and vertical composite flow field, covering the entire tank space and improving the chemical reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the tank body of the present invention; Figure 3 is a schematic diagram of the internal structure of the preparation tank of the present invention; Figure 4 Schematic diagram of the internal structure of the auxiliary frame of the present invention; Figure 5 Schematic diagram of the connection relationship structure of Gear 1 of the present invention; Figure 6 Schematic diagram of the connection relationship structure of Shaft 1 of the present invention; Figure 7 Schematic diagram of the connection relationship structure of the connection frame of the present invention; Figure 8 of the present invention Figure 7 Enlarged schematic diagram of the structure at position A in; Figure 9 Explosion schematic diagram of the partial structure of the present invention.

[0029] Reference signs: 1, tank body; 2, cover; 3, preparation tank; 4, interlayer; 5, baffle; 61, connecting ring; 62, auxiliary frame; 63, motor; 64, first toothed ring; 65, first gear; 66, second gear; 67, second toothed ring; 68, first shaft; 69, second shaft; 610, first conical cylinder; 611, first stirring plate; 612, first round hole; 613, second conical cylinder; 614, second stirring plate; 615, second round hole; 71, connecting frame; 72, toothed column; 73, third gear; 74, L-shaped flapping plate; 75, conical hole; 76, auxiliary plate; 77, protective sleeve; 78, rotating cylinder; 79, dropper; 710, first chute; 81, fixed column; 82, lead screw; 83, third conical cylinder; 84, fixing plate; 85, sliding plate; 86, push plate; 87, return spring; 88, third round hole; 89, second chute. Detailed implementation manners

[0030] The following will further describe the present invention in detail with reference to the attached Figures 1 - 9 drawings.

[0031] The embodiment of the present invention discloses a reaction device for the production of sodium methallyl sulfonate.

[0032] Refer to Figure 1 , Figure 2, A reaction device for the production of sodium methallyl sulfonate includes a tank body 1. The bottom surface of the tank body 1 is fixedly connected with a support frame. The top surface of the tank body 1 is fixedly provided with a cover 2 by bolts. The outer surface of the cover 2 is provided with ventilation grooves for dissipating heat for the motor 63. The center of the inner bottom surface of the tank body 1 is fixedly connected with a preparation tank 3. The preparation tank 3 can be externally connected with a feed pipe. The preparation tank 3 is used for carrying out chemical reactions. The inner wall of the preparation tank 3 is lined with glass enamel (thickness 2 mm). A sandwich layer 4 for storing condensate is formed between the tank body 1 and the preparation tank 3. The outer surface of the tank body 1 is fixedly communicated with a liquid inlet pipe, and the liquid inlet pipe is communicated with the sandwich layer 4. A baffle 5 is fixedly connected between the top end of the preparation tank 3 and the inner wall of the tank body 1. The eccentric part of the bottom surface of the tank body 1 is fixedly communicated with a drain pipe, and the drain pipe is communicated with the sandwich layer 4. The bottom surface of the preparation tank 3 is fixedly communicated with a discharge pipe. Stainless steel 316L material valves are installed at the openings of the liquid inlet pipe, the drain pipe, the feed pipe and the discharge pipe. By rotating the handle 90 degrees, full-bore sealing is achieved.

[0033] During use, inject 1.5 kg of sodium sulfite solution with a mass fraction of 20% into the preparation tank 3 through the feed pipe. After nitrogen replacement, heat it up to 45 °C, and start to dropwise add a total of 211 g of methallyl chloride. The entire dropping process lasts for 1 h. Relying on the heat released by the reaction itself, heat it up to 60 - 70 °C and keep the reaction for 3 h. After the reaction is completed, inject coolant through the liquid inlet pipe to cool the liquid in the preparation tank 3 to 40 °C. Subsequently, add 171 g of solid sodium sulfite, stir and dissolve it, then heat it up to 45 °C, and dropwise add a total of 127 g of methallyl chloride. The entire dropping process lasts for 0.5 h. Relying on the heat released by the reaction itself and heating with heat transfer oil, heat it up to 60 - 70 °C, keep the reaction for 2 h, and then remove the unreacted methallyl chloride under a pressure of -0.95 MPa to obtain the sulfonation reaction liquid. Calculated based on sodium sulfite throughout the reaction process, the conversion rate > 98.7%.

[0034] Refer to Figures 3 to 5, a mixing mechanism is arranged inside the cover 2. The mixing mechanism includes a connecting ring 61 fixedly connected to the inner wall of the cover 2. The center of the inner wall of the connecting ring 61 is fixedly connected through the auxiliary frame 62. The top surface of the inner wall of the cover 2 is fixedly connected to the outer shell of the motor 63. The motor 63 can be matched with a speed reducer (speed ratio 10:1). The center of the top surface of the inner wall of the auxiliary frame 62 is rotatably connected to the first toothed ring 64. The center of the first toothed ring 64 is fixedly connected to the output shaft of the motor 63, and the output shaft of the motor 63 is rotatably connected through the center of the inner wall of the auxiliary frame 62. The inner wall of the first toothed ring 64 is meshed with the first gear 65, and the first gear 65 is rotatably connected to the inner wall of the connecting ring 61 through the first connecting plate. The outer surface of the first gear 65 is meshed with the second gear 66, and the second gear 66 is rotatably connected to the inner wall of the connecting ring 61 through the second connecting plate. The outer surface of the second gear 66 is meshed with the second toothed ring 67, and the second toothed ring 67 is rotatably connected to the bottom surface of the inner wall of the connecting ring 61. The gear modulus m = 2, the number of teeth of the first toothed ring 64 is 50, the number of teeth of the first gear 65 is 20, the number of teeth of the second gear 66 is 25, the number of teeth of the second toothed ring 67 is 50, the transmission ratio is 1:1, and the directions are opposite.

[0035] During use, the output shaft of the motor 63 drives the first toothed ring 64 to rotate through forward and reverse rotation. The rotation of the first toothed ring 64 drives the first gear 65 meshed with the first toothed ring 64 to rotate. The rotation of the first gear 65 drives the second gear 66 meshed with the first gear 65 to rotate. The rotation of the second gear 66 drives the second toothed ring 67 meshed with the second gear 66 to rotate. The first toothed ring 64 and the second toothed ring 67 are coaxial and rotate in opposite directions.

[0036] Refer to Figure 6, at the center of the inner wall of the first gear ring 64, it is fixedly connected to the first rotating shaft 68. The first rotating shaft 68 passes through and is rotatably connected inside the auxiliary frame 62 and the second gear ring 67. One side of the second gear ring 67 is fixedly connected to the second rotating shaft 69. The second rotating shaft 69 is located on the side away from the second gear 66, and the second rotating shaft 69 passes through and is rotatably connected inside the auxiliary frame 62. Moreover, the first rotating shaft 68 and the second rotating shaft 69 are rotatably connected through each other. One side of the second rotating shaft 69 is fixedly connected to the first conical cylinder 610. The first conical cylinder 610 is a conical shape with a small upper end and a large lower end. The first conical cylinder 610 is located on the side away from the second gear ring 67. A number of first stirring plates 611 are fixedly arranged in a circumferential array on the outer surface of the first conical cylinder 610. Inside the walls of the first stirring plates 611, a number of first round holes 612 are linearly arranged. On the outer surface of one side of the first rotating shaft 68, it is fixedly connected to the second conical cylinder 613. The second conical cylinder 613 is a conical shape with a large upper end and a small lower end. The second conical cylinder 613 is located on the side away from the first gear ring 64, and the second conical cylinder 613 is located below the first conical cylinder 610. On the outer surface of the second conical cylinder 613, a number of second stirring plates 614 are fixedly arranged in a circumferential array. Inside the walls of the second stirring plates 614, a number of second round holes 615 are linearly arranged. The first conical cylinder 610 and the second conical cylinder 613 are located inside the preparation tank 3. The materials of the first conical cylinder 610 and the second conical cylinder 613 are Hastelloy C276.

[0037] As known from the above, the rotation of the first gear ring 64 drives the rotation of the first rotating shaft 68 fixedly connected to the first gear ring 64. The rotation of the first rotating shaft 68 drives the rotation of the second conical cylinder 613 fixedly connected to the first rotating shaft 68. The rotation of the second conical cylinder 613 drives the rotation of the second stirring plates 614 and the second round holes 615 fixedly connected to the second conical cylinder 613 together. The rotation of the second gear ring 67 drives the rotation of the second rotating shaft 69 fixedly connected to it. The rotation of the second rotating shaft 69 drives the rotation of the first conical cylinder 610 fixedly connected to the second rotating shaft 69. The rotation of the first conical cylinder 610 drives the rotation of the first stirring plates 611 and the first round holes 612 fixedly connected to the first conical cylinder 610 together. Since the first gear ring 64 and the second gear ring 67 are coaxial and rotate in opposite directions, that is, the first conical cylinder 610 and the second conical cylinder 613 are also coaxial and rotate in opposite directions. Since the first conical cylinder 610 and the second conical cylinder 613 are located inside the preparation tank 3, that is, the first conical cylinder 610 and the second conical cylinder 613 rotate coaxially and in opposite directions inside the preparation tank 3. The vortices generated by the coaxial reverse rotation interfere with each other, which can break the symmetric flow, eliminate the laminar dead zone inside the tank, and avoid the stirring blind areas at the top and bottom edges of the tank.

[0038] Refer to Figure 7 , Figure 8, a slapping mechanism is arranged inside the preparation tank 3. The slapping mechanism includes a connecting frame 71 fixedly connected to the bottom surface of the connecting ring 61. The inner wall of the connecting frame 71 is rotatably connected to a tooth column 72, and a first rotating shaft 68 is fixedly connected through the interior of the tooth column 72. The first rotating shaft 68 is rotatably connected through the connecting frame 71. Both sides of the connecting frame 71 are rotatably connected to a third gear 73. The third gear 73 is meshed and adapted to the tooth column 72. The top surface of the cover 2 is fixedly connected to an auxiliary plate 76. Eccentric positions of the auxiliary plate 76 are symmetrically provided with a first sliding groove 710. The outer surface of the third gear 73 is fixedly connected to an L-shaped slapping plate 74. The swinging angle of the L-shaped slapping plate 74 is 30° - 60°, and the L-shaped slapping plate 74 is slidably adapted to the first sliding groove 710. The outer surface of the L-shaped slapping plate 74 is linearly arrayed with a number of tapered holes 75. The tapered holes 75 have a large inlet and a small outlet. And the side of the L-shaped slapping plate 74 provided with the tapered holes 75 is located inside the preparation tank 3. The top surface of the auxiliary plate 76 is fixedly connected to a protective sleeve 77, and the protective sleeve 77 is located above the first sliding groove 710. The L-shaped slapping plate 74 is fixedly connected through the protective sleeve 77. The protective sleeve 77 can move along with the swinging of the L-shaped slapping plate 74, thereby ensuring the sealing performance of the preparation tank 3. The material of the protective sleeve 77 is fluororubber (FKM), with a temperature resistance of -20°C to 200°C.

[0039] During use, the forward and reverse rotation of the first rotating shaft 68 drives the tooth column 72 fixedly connected to the first rotating shaft 68 to rotate. The forward and reverse rotation of the tooth column 72 drives the third gear 73 to rotate. The forward and reverse rotation of the third gear 73 drives the L-shaped slapping plate 74 fixedly connected to the third gear 73 to swing reciprocally. The swinging angle of the L-shaped slapping plate 74 is 30° - 60°. When the L-shaped slapping plate 74 swings, it slaps the chemical agent inside the reaction tank, divides the fluid inside the tank into an upward flow region and a downward flow region, breaks the symmetric flow field of traditional stirring, induces three-dimensional turbulence, and the tapered holes 75 on the L-shaped slapping plate 74 have a large inlet and a small outlet. The inlet diameter of the tapered hole 75 is 12 mm, the outlet diameter is 8 mm, the cone angle is 30°, and the jet velocity is 3 - 5 m / s. A local high-pressure area is formed instantaneously during slapping, and the fluid passes through the round hole at a high speed to generate microjets, effectively breaking particle aggregates such as un-dissolved sodium sulfite particles. And the protective sleeve 77 can move along with the swinging of the L-shaped slapping plate 74, thereby ensuring the sealing performance of the preparation tank 3.

[0040] The center point of the auxiliary plate 76 is rotatably connected to a rotating cylinder 78. The rotating cylinder 78 is fixedly connected to the first rotating shaft 68. And the connecting frame 71 is located above the rotating cylinder 78 with a certain gap left. An eccentric position of the rotating cylinder 78 is fixedly connected through a dropper 79. The dropper 79 can be externally connected to an automatic methyl allyl chloride adding device.

[0041] When the first rotating shaft 68 rotates, it drives the rotating cylinder 78 to rotate. The rotation of the rotating cylinder 78 drives the dropper 79 fixedly connected thereto to rotate. When adding allyl chloride to the preparation tank 3 through the dropper 79, the allyl chloride is thrown out by the centrifugal force generated during the rotation of the dropper 79, avoiding the situation in the prior art where the addition position of allyl chloride is fixed, making the addition of allyl chloride more uniform.

[0042] Refer to Figure 3 、 Figure 9 Inside the preparation tank 3, an auxiliary mechanism is provided. The auxiliary mechanism includes a lead screw 82 fixedly connected to the first rotating shaft 68. The outer surface of the lead screw 82 is slidably connected to a third tapered cylinder 83. The third tapered cylinder 83 is tapered with a larger upper end and a smaller lower end. Tungsten carbide (friction coefficient ≤ 0.1) is sprayed on the surface of the third tapered cylinder 83. The center of the inner wall of the preparation tank 3 is fixedly connected to a fixed column 81. The lead screw 82 is rotatably connected to the center of the inner wall of the fixed column 81. One side of the fixed column 81 is fixedly connected to a fixed plate 84. The fixed plate 84 is located on the side away from the preparation tank 3. The inner wall of the fixed plate 84 is annularly arrayed with a second chute 89. The inner wall of the second chute 89 is slidably connected to a sliding plate 85, and the sliding plate 85 abuts against the third tapered cylinder 83. One side of the sliding plate 85 is fixedly connected to a push plate 86. The push plate 86 is located on the side away from the lead screw 82. A number of third round holes 88 are linearly arrayed inside the push plate 86. A return spring 87 is fixedly connected to the arc surface of the fixed plate 84. The end of the return spring 87 away from the fixed plate 84 is fixedly connected to the push plate 86. The return spring 87 is used to control the reset of the push plate 86. The material of the return spring 87 is 316L stainless steel, with a pre-tightening force of 80 N and a return speed ≥ 0.2 m / s.

[0043] During use, the first rotating shaft 68 rotates forward and backward to drive the lead screw 82 to rotate forward and backward. The forward and backward rotation of the lead screw 82 drives the third tapered cylinder 83 to perform reciprocating movement in the vertical direction. Since the third tapered cylinder 83 has a shape with a small inlet and a large opening, that is, when the third tapered cylinder 83 moves downward, the sliding plate 85 is pushed outward to expand through the inclined surface of the third tapered cylinder 83. The outward expansion of the sliding plate 85 drives the push plate 86 fixedly connected to the sliding plate 85 to expand outward together, and the return spring 87 is stretched. When the third tapered cylinder 83 moves upward, the sliding plate 85 is not squeezed by the third tapered cylinder 83, that is, the return spring 87 is no longer stretched and contracts, causing the push plate 86 to contract inward, thereby disturbing the fluid at the bottom of the preparation tank 3 and breaking the bottom laminar flow area.

[0044] Among them, the motor 63 is a Siemens 1LEO series variable-frequency motor. A switch and a power supply are provided on the arc surface of the tank body 1. Starting from the power supply, a main line is arranged inside the tank body 1, and this main line passes through the cover 2 and is connected to the motor 63. Electric power is transmitted to the motor 63 through this main line, and it is ensured that the connection is firm and the contact is good. Thus, the start and stop of the motor 63 are controlled by the PLC control device.

[0045] Calculation formula for the return spring 87: F = kx, where F is the external force applied to the spring, unit: N, k is the spring constant, unit: N / m, and x is the deformation of the spring, unit: m. Then calculate the elastic force of the alloy spring so that it can be used in this device.

[0046] The implementation principle of the reaction device for the production of sodium methallyl sulfonate in the embodiment of the present invention is as follows: During use, sodium sulfite solution is fed into the preparation tank 3 through the feed pipe. After nitrogen replacement, the temperature is raised to 45°C, and then methallyl chloride is dropped. Relying on the heat released by the reaction itself, the temperature is raised to 60 - 70°C, and the reaction is kept for 3 hours. After the reaction is completed, coolant is injected through the liquid inlet pipe to cool the liquid in the preparation tank 3 to 40°C. Subsequently, solid sodium sulfite is added, and the switch drives the motor 63 to rotate forward and backward, thereby driving the conical cylinder one 610 and the conical cylinder two 613 to rotate coaxially in opposite directions, and the rotation directions are opposite, so as to eliminate the laminar dead zone in the tank and avoid the stirring blind zone at the top and bottom edges of the tank; The forward and backward rotation of the motor 63 drives the rotation shaft one 68 to rotate forward and backward, thereby driving the tooth column 72 to rotate forward and backward, causing the gear three 73 to deflect. The deflection of the gear three 73 drives the L-shaped flapping plate 74 to swing reciprocally inside the preparation tank 3, thereby flapping the chemical agents in the reaction tank and dividing the fluid in the tank into an upward flow region and a downward flow region, breaking the symmetric flow field of traditional stirring and inducing three-dimensional turbulence; The forward and backward rotation of the rotation shaft one 68 drives the screw rod 82 to rotate forward and backward, causing the conical cylinder three 83 to move reciprocally in the vertical direction, thereby controlling the sliding plate 85 to expand outwards, so as to disturb the fluid at the bottom of the preparation tank 3 and break the bottom laminar region; After stirring and dissolving, the temperature is raised to 45°C, and 127 g of methallyl chloride is dropped. The entire dropping process lasts for 0.5 h. Relying on the heat released by the reaction itself and heating with heat transfer oil, the temperature is raised to 60 - 70°C. After keeping the reaction for 2 h, the unreacted methallyl chloride is removed under a pressure of -0.95 MPa to obtain the sulfonation reaction liquid. The entire reaction process is calculated based on sodium sulfite, and the conversion rate > 98.7%.

[0047] The above are only optional embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reaction device for the production of sodium methallyl sulfonate, characterized in that: It includes a tank body (1), the top surface of the tank body (1) is fixedly provided with a cover (2) by bolts, a preparation tank (3) for chemical reaction is fixedly connected inside the tank body (1), and an interlayer (4) for storing condensate is formed between the tank body (1) and the preparation tank (3); A mixing mechanism for uniformly mixing chemical agents is arranged inside the cover (2); The mixing mechanism includes a connecting ring (61) fixedly connected inside the cover (2), an auxiliary frame (62) is fixedly connected through the inside of the connecting ring (61), a motor (63) is fixedly connected inside the cover (2), a first toothed ring (64) fixedly connected to the output shaft of the motor (63) is rotatably connected inside the auxiliary frame (62), and the output shaft of the motor (63) is rotatably connected through the inside of the auxiliary frame (62); A slapping mechanism for slapping the chemical agents inside the preparation tank (3) is arranged inside the preparation tank (3); The slapping mechanism includes a connecting frame (71) fixedly connected to the bottom surface of the connecting ring (61), a toothed column (72) fixedly connected to a first rotating shaft (68) is rotatably connected inside the connecting frame (71), the first rotating shaft (68) is rotatably connected through the inside of the connecting frame (71), and two third gears (73) meshing with the toothed column (72) are rotatably connected to both sides of the connecting frame (71); An auxiliary mechanism for mixing the chemical agents at the bottom of the tank is arranged inside the preparation tank (3); The auxiliary mechanism includes a lead screw (82) fixedly connected to one side of the first rotating shaft (68), a conical cylinder three (83) is slidably connected to the outer surface of the lead screw (82), a fixed column (81) rotatably connected to the lead screw (82) is fixedly connected to the inner wall of the preparation tank (3), and a fixing plate (84) is fixedly connected to the side of the fixed column (81) away from the preparation tank (3).

2. The reaction device for the production of sodium methallyl sulfonate according to claim 1, wherein: A first gear (65) rotatably connected to the connecting ring (61) is meshed inside the first toothed ring (64), a second gear (66) rotatably connected to the connecting ring (61) is meshed on the outer surface of the first gear (65), and a second toothed ring (67) rotatably connected to the connecting ring (61) is meshed on the outer surface of the second gear (66).

3. The reaction device for the production of sodium methallyl sulfonate according to claim 2, wherein: A first rotating shaft (68) rotatably connected through the auxiliary frame (62) is fixedly connected inside the first toothed ring (64), a second rotating shaft (69) rotatably connected through the auxiliary frame (62) is fixedly connected to the side of the second toothed ring (67) away from the second gear (66), and the first rotating shaft (68) is rotatably connected through the inside of the second rotating shaft (69).

4. A reaction device for the production of sodium methallyl sulfonate according to claim 3, characterized in that: On one side of the second rotating shaft (69) far from the second toothed ring (67), a first conical cylinder (610) is fixedly connected. On the outer surface circumference of the first conical cylinder (610), a number of first stirring plates (611) are fixedly arranged in a circular array. Inside the first stirring plates (611), a number of first circular holes (612) are linearly arranged in an array. On the outer surface of one side of the first rotating shaft (68) far from the first toothed ring (64), a second conical cylinder (613) is fixedly connected. On the outer surface circumference of the second conical cylinder (613), second stirring plates (614) are fixedly arranged in a circular array. Inside the second stirring plates (614), a number of second circular holes (615) are linearly arranged in an array.

5. The reaction device for the production of sodium methallyl sulfonate according to claim 1, characterized in that: On the top surface of the cover (2), an auxiliary plate (76) is fixedly connected. At the eccentric positions of the auxiliary plate (76), first chutes (710) are symmetrically opened. On the outer surface of the third gear (73), an L-shaped flapping plate (74) that is slidably adapted to the first chutes (710) is fixedly connected.

6. The reaction device for the production of sodium methallyl sulfonate according to claim 5, characterized in that: On the outer surface of the L-shaped flapping plate (74), a number of conical holes (75) are linearly arranged in an array. On one side of the auxiliary plate (76) at the eccentric position, a protective sleeve (77) fixedly connected to the L-shaped flapping plate (74) is fixedly connected. Inside the auxiliary plate (76), a rotating cylinder (78) fixedly connected to the first rotating shaft (68) is rotatably connected. Inside the rotating cylinder (78), a dropper (79) is fixedly connected through.

7. A reaction device for the production of sodium methallyl sulfonate according to claim 1, characterized in that: Inside the fixing plate (84), second chutes (89) are annularly arranged in an array. Inside the second chutes (89), a sliding plate (85) that abuts against the third conical cylinder (83) is slidably connected. On the side of the sliding plate (85) far from the lead screw (82), a pushing plate (86) is fixedly connected. Inside the pushing plate (86), a number of third circular holes (88) are linearly arranged in an array. Between the fixing plate (84) and the pushing plate (86), a return spring (87) is fixedly connected.

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