A method for producing super absorbent resin based on spray suspension reaction method

Abstract

The present invention relates to the field of resin production, and discloses a method for producing a super absorbent resin based on a spray suspension reaction method, comprising: step one: dissolving a monomer with high water absorption potential, a crosslinking agent and an initiator in water or a solvent in proportion, ensuring that the solution is uniform, and providing a basis for forming a super absorbent resin; step two: adding a continuous phase and a stabilizer to a reaction device, adjusting the stirring speed, and connecting the spray system in the reaction device to a container containing a monomer solvent; reducing the contact opportunity between the atomized airflow and the nozzle through a contraction action, effectively preventing liquid residue inside the nozzle and avoiding residual liquid from dripping into the reactor, and avoiding the problem of uneven particle distribution or quality degradation caused by the residual liquid mixing with the reaction system. The design improves the stability of the reaction process, the durability of the equipment, and ensures the high quality of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of resin production, and in particular to a method for producing a highly water-absorbent resin based on a spray suspension reaction method. Background Art

[0002] Superabsorbent Polymer (SAP) is an important functional polymer material, widely used in sanitary products, agriculture, medicine and industry. The production method of superabsorbent resin based on spray suspension reaction is a relatively advanced technology. Liquid or solution monomer raw materials are atomized into fine droplets, uniformly dispersed in the continuous phase for polymerization reaction, so as to prepare resin particles with excellent water absorption performance and uniform particle size.

[0003] In the actual production process, in order to meet different performance requirements or cope with sudden process needs, it is often necessary to add other chemical additives to the reaction system or adjust the composition of the solution. For example, it may be necessary to add a crosslinker to improve the structural stability of the resin, or add a stabilizer and a dispersant to prevent particle agglomeration, and it may also be necessary to adjust the monomer ratio to optimize the water absorption performance of the product. During these operations, in order to ensure that the additives or new solutions are fully mixed with the system and evenly distributed, it is usually necessary to temporarily stop the spraying.

[0004] However, stopping the spraying will cause the residence time of the liquid monomer or solution in the nozzle to be prolonged, thus accumulating larger droplets on the nozzle surface or nozzle. The main reason for this phenomenon is that after the spraying stops, the liquid flow originally driven by the atomizing airflow stops, and the liquid is retained inside the nozzle and at the outlet, which easily forms larger droplets. The accumulated droplets may not only drip into the reaction system, resulting in uneven particle distribution and quality degradation, but also hinder the normal atomization of the nozzle, resulting in uneven droplet distribution in the initial stage of spraying, and may increase the risk of equipment clogging due to long-term retention, crystallization or solidification. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a method for producing a super absorbent resin based on a spray suspension reaction method, which can effectively prevent liquid residue inside a nozzle, aiming to alleviate the above problems at least to a certain extent.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A method for producing a super absorbent resin based on a spray suspension reaction method, comprising: Step 1: Dissolve the monomer with high water absorption potential, cross-linking agent and initiator in water or solvent in proportion to ensure that the solution is uniform, providing a basis for forming a highly absorbent resin; Step 2: Add the continuous phase and stabilizer to the reaction device, adjust the stirring speed, and connect the spray system in the reaction device to the container containing the monomer solvent; Step 3: Keep the droplets suspended under the action of the reaction device, so that the polymerization and cross-linking reactions proceed evenly to form highly absorbent resin particles with a three-dimensional network structure; Step 4: After the polymerization is completed, the resin particles are separated, washed to remove impurities, and then dried to obtain high-purity resin particles; Step 5: After the reaction is completed, the resin particles are separated, washed to remove impurities, and dried to obtain pure particles; Step 6: Screen the particles to ensure uniform particle size, and test the water absorption rate, salt resistance and swelling rate performance indicators; The reaction device in step 2 comprises: Reactor; A stirring element provided in the reactor, for maintaining a uniform dispersion state of the droplets in the continuous phase; A cover plate disposed on the top of the reactor, wherein a plurality of connecting openings are provided on the top of the cover plate; A connecting frame body is arranged on the top of the cover plate, the connecting frame body is slidably connected to the cover plate, and a plurality of connecting sleeves are arranged in the connecting frame body; A plurality of atomizing nozzles arranged in the connecting sleeve; A rotating component provided between the reaction kettle and the stirring member, used for rotating the stirring member, wherein the rotating component can move the position of the connecting frame downward when rotating and stirring, and the connecting frame stops when it moves downward to a preset position; A spray component provided on the connecting frame, used to allow a plurality of atomizing nozzles located in the connecting sleeve to slide and protrude from the connecting sleeve when the connecting frame moves downward to a preset position; Wherein, the connecting sleeve can open the connecting opening when it moves downward to a preset position, and can close the connecting opening when it moves upward to leave the cover plate.

[0007] Preferably, the rotating component includes a rotating shaft connected to the reactor, the stirring element is connected to the rotating shaft, the bottom of the reactor is connected to a base, a motor is provided on the base, and a driving shaft of the motor is connected to the rotating shaft.

[0008] Preferably, the rotating component further comprises a screw connected to the top of the rotating shaft, the connecting frame is threadedly connected to the screw, and the bottom of the connecting frame is inserted into the cover plate and the limiting rod in the reactor.

[0009] Preferably, the top of the rotating shaft is connected to a connecting block, the connecting block is rotatably connected to the bottom of the lead screw, a push rod a is slidably connected inside the connecting block, a top groove a adapted to the push rod a is opened on the inner wall of the lead screw, a spring a is connected between the push rod a and the connecting block, the top groove a is a semi-spherical groove, and one end of the push rod a adapted to the top groove a is semi-spherical.

[0010] Preferably, a bracket is connected inside the reactor, a spring telescopic rod is connected to the bracket, a boss is connected to the top of the spring telescopic rod, the top of the boss is a dome, and the boss is slidably connected to the connection opening.

[0011] Preferably, the spray component includes a connecting shaft rotatably connected to the connecting sleeve, the connecting shaft is connected to a gear, the connecting sleeve is provided with a sliding opening, the atomizing nozzle is slidably connected in the sliding opening, and the atomizing nozzle is connected to a rack meshing with the gear.

[0012] Preferably, the spray component also includes a connecting rod slidably connected to the connecting frame, a spring b is provided between the connecting rod and the connecting frame, a traction rope is connected to one side of the connecting rod, one end of the traction rope is wound around the connecting shaft, and a spring c is provided between the connecting shaft and the connecting sleeve.

[0013] Preferably, the inner bottom surface of the connecting sleeve is connected to a vibration sleeve, a magnetic rod is slidably connected inside the vibration sleeve, the magnetic rod is magnetically attracted to the boss, a top rod b is slidably connected to the magnetic rod, a top groove b adapted to the top rod b is opened on the inner wall of the vibration sleeve, the top groove b is a semi-spherical groove, one end of the top rod b adapted to the top groove b is semi-spherical, and a spring d is provided between the top rod b and the magnetic rod.

[0014] In summary, the present invention mainly has the following beneficial effects: Through this technical solution, the atomizing nozzle can be accurately positioned in the working area of ​​the reactor to ensure uniform distribution of the spray droplets. The atomizing nozzle protrudes from the connecting sleeve, which effectively avoids the accumulation or dripping of droplets due to contact with the surface of the connecting sleeve during the spraying process, thereby promoting the full dispersion of the spray droplets and improving the uniformity and efficiency of the reaction. When it is necessary to suspend the spraying or end the spraying operation, the atomizing nozzle can be retracted into the connecting sleeve, thereby reducing the risk of damage to the nozzle due to collision, contamination or accumulation of liquid, and extending the service life of the equipment. At the same time, the chance of contact between the atomizing airflow and the nozzle is reduced by the contraction action, effectively preventing the residual liquid inside the nozzle and avoiding the residual liquid from dripping into the reactor, avoiding the problem of uneven particle distribution or quality reduction caused by the residual liquid mixing with the reaction system. This design improves the stability of the reaction process, the durability of the equipment, and ensures the high quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of a reactor of the present invention; Figure 3 It is a schematic diagram of the support structure of the present invention; Figure 4 yes Figure 3 A magnified schematic diagram of the local structure at point A in the middle; Figure 5 It is a schematic diagram of the connecting sleeve structure of the present invention; Figure 6 It is a schematic diagram of the gear and rack structure of the present invention; Figure 7 It is a schematic diagram of the vibration sleeve structure of the present invention.

[0016] Reference numerals: 100, reaction device; 101, reaction kettle; 102, stirring element; 103, cover plate; 104, connection opening; 105, connection frame; 106, connection sleeve; 107, atomizing nozzle; 200, rotating shaft; 201, base; 202, motor; 203, lead screw; 204, limit rod; 205, connecting block; 206, top rod a; 207, top groove a; 208, spring a; 300, bracket; 301, spring telescopic rod; 302, boss; 400, connecting shaft; 401, gear; 402, sliding opening; 403, rack; 404, connecting rod; 405, spring b; 406, traction rope; 407, spring c; 500, vibration sleeve; 501, magnetic rod; 502, top rod b; 503, top groove b; 504, spring d. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] refer to Figure 1-Figure 7 , a method for producing a super absorbent resin based on a spray suspension reaction method, comprising the following steps: Step 1: Dissolve monomers with high water absorption potential (such as acrylic acid and its salts), crosslinking agents and initiators in water or solvent in proportion, ensuring that the solution is uniform, providing a basis for forming a highly absorbent resin; Step 2: Add the continuous phase and the stabilizer to the reaction device 100, adjust the stirring speed, and connect the spray system in the reaction device 100 to the container containing the monomer solvent; Step 3: Keep the droplets suspended under the action of the reaction device 100, so that the polymerization and cross-linking reactions proceed evenly, and form highly absorbent resin particles with a three-dimensional network structure; Step 4: After the polymerization is completed, the resin particles are separated, washed to remove impurities, and then dried to obtain high-purity resin particles; Step 5: After the reaction is completed, the resin particles are separated, washed to remove impurities, and dried to obtain pure particles; Step 6: Screen the particles to ensure uniform particle size and test the water absorption rate, salt resistance and swelling rate performance indicators.

[0019] The reaction device 100 in step 2 comprises: Reactor 101; A stirring member 102 disposed in the reaction vessel 101 is used to maintain a uniform dispersion state of the droplets in the continuous phase; A cover plate 103 is disposed on the top of the reactor 101, and a plurality of connecting openings 104 are opened on the top of the cover plate 103; A connecting frame 105 is disposed on the top of the cover plate 103. The connecting frame 105 is slidably connected to the cover plate 103. A plurality of connecting sleeves 106 are disposed in the connecting frame 105. A plurality of atomizing nozzles 107 disposed in the connecting sleeve 106; A rotating component disposed between the reaction kettle 101 and the stirring member 102, used to rotate the stirring member 102, the rotating component can move downward to the position of the connecting frame 105 when rotating and stirring, and the connecting frame 105 stops when it moves downward to a preset position; The spray component provided on the connecting frame 105 is used to allow the plurality of atomizing nozzles 107 located in the connecting sleeve 106 to slide and protrude from the connecting sleeve 106 when the connecting frame 105 moves downward to a preset position; The connecting sleeve 106 can open the connecting opening 104 when it moves downward to a preset position, and can close the connecting opening 104 when it moves upward to leave the cover plate 103; By setting up the reaction kettle 101, when used, the monomer (such as acrylic acid, acrylate), crosslinking agent, initiator and other additives are dissolved in water or solvent in proportion to ensure accurate ratio and uniform solution, and pure water or solvent is added to the reaction kettle 101 as a continuous phase, and a stabilizer or dispersant is added at the same time. Connect the container containing the monomer solution to the atomizing nozzle 107 and provide pressure (the monomer solution mainly consists of the following components: monomers, mainly including monomers with high water absorption potential, such as acrylic acid and its salts (such as sodium acrylate), which are the core materials for the formation of super absorbent resins. Cross-linking agents, such as N,N'-methylenebisacrylamide, can combine with monomers during the polymerization process to form a three-dimensional network structure, thereby improving the water absorption and stability of the resin. Initiators, such as potassium persulfate or peroxide, are used to initiate free radical polymerization reactions to ensure that the monomers can quickly polymerize to form polymer chains. Auxiliary agents, including surfactants, stabilizers or pH regulators, are mainly used to improve the uniformity of the solution, regulate reaction conditions or improve product performance. Solvents, usually water, but other solvents may also be used in special cases to dissolve the above components and provide reaction media), at this time, the rotating component can be started to rotate The stirring member 102 is movable. When the rotating member rotates the stirring member 102, the position of the connecting frame 105 can be moved downward, so that the connecting sleeve 106 and the atomizing nozzle 107 in the connecting sleeve 106 gradually approach the connecting opening 104 on the cover plate 103. When the connecting sleeve 106 moves downward to a preset position, the connecting opening 104 can be opened, and the connecting sleeve 106 and the nozzle therein can be smoothly plugged into the reactor 101, and the connecting sleeve 106 itself is used to close the connecting opening 104. When the connecting frame 105 moves downward to a preset position, the spray member arranged therein can allow multiple atomizing nozzles 107 located in the connecting sleeve 106 to slide and protrude from the connecting sleeve 106, and the booster mechanism in the container containing the monomer solution is started to provide pressure to spray the monomer solution through the atomizing nozzle 107, and form uniformly distributed tiny droplets in the continuous phase of the reactor 101. In the reactor 101, the rotation of the stirring member 102 can maintain the suspension state of the droplets, prevent the droplets from aggregating or settling, thereby ensuring the stability of the suspension system. In the polymerization and cross-linking reactions, these droplets will gradually form a granular super absorbent resin. During the production process, it may be necessary to adjust the composition of the monomer solution according to the performance requirements of the resin. For example, increase or decrease the proportion of certain monomers, or add new monomers to change the water absorption, mechanical strength or other properties of the resin. When it is necessary to adjust the solution composition, stopping the spraying can avoid uneven distribution and unstable reaction of the solution. Pausing the spraying can ensure that the new monomer or solvent is evenly dissolved and fully integrated into the reaction system. For this reason, the present application arranges the atomizing nozzle 107 outside the reactor 101.Specifically, in the initial state, in order to ensure that the connecting sleeve 106 can smoothly pass through the connecting opening 104 and enter the reactor 101, the atomizing nozzle 107 is retracted in the connecting sleeve 106 to ensure that after the connecting sleeve 106 is inserted into the connecting opening 104, the connecting sleeve 106 itself can be used to seal the connecting opening 104, thereby effectively preventing impurities or air in the external environment from entering the reactor 101, and ensuring the sealing and purity of the reaction system. When the connecting sleeve 106 reaches the preset position, the spray component is started, so that the atomizing nozzle 107 in the connecting sleeve 106 is gradually extended and accurately positioned in the working area in the reactor 101 to ensure the uniformity of the atomization effect. In addition, the atomizing nozzle 107 is protruded from the connecting sleeve 106, so that the nozzle of the atomizing nozzle 107 can be as far away from the connecting sleeve 106 as possible, thereby reducing the accumulation or dripping of the atomized droplets due to contact with the surface of the connecting sleeve 106 during the spraying process. Through this design, the droplets formed by the spray can be more fully dispersed in the reactor 101, avoiding the accumulation of droplets near the connecting sleeve 106, which affects the uniformity and efficiency of the reaction. When the spray operation is completed or the spraying needs to be suspended, the connecting frame 105 is reset and moved upward. During this process, the atomizing nozzle 107 can be retracted into the connecting sleeve 106, and the connecting opening 104 is closed again by the connecting sleeve 106. The atomizing nozzle 107 is retracted into the connecting sleeve 106 to reduce the damage to the nozzle due to collision, pollution or effusion, and extend the service life of the equipment. After the spraying is completed, the liquid flow originally driven by the atomizing airflow stops, and the liquid is retained inside the nozzle and at the outlet, which is easy to form larger droplets. The retraction action of the atomizing nozzle 107 reduces the contact opportunity between the nozzle and the atomizing airflow after the atomizing nozzle 107 ends the spraying, and a small amount of liquid may remain inside the nozzle. By retracting into the sleeve, the residual liquid will not directly drip into the reactor 101 and mix with the reaction liquid in the reactor 101. This avoids the problem of accumulated liquid dripping into the reaction system, resulting in uneven particle distribution and quality degradation.

[0020] As a further solution of the present invention, the rotating component includes a rotating shaft 200 connected to the reactor 101, the stirring member 102 is connected to the rotating shaft 200, the bottom of the reactor 101 is connected to a base 201, the base 201 is provided with a motor 202, and the driving shaft of the motor 202 is connected to the rotating shaft 200; By setting a rotating part, including a rotating shaft 200 and a stirring member 102 connected to the reactor 101, continuous stirring and uniform mixing of the materials in the reactor 101 can be achieved. A motor 202 is provided on the base 201, and the driving shaft of the motor 202 is connected to the rotating shaft 200 to ensure that the rotating shaft 200 can operate efficiently, thereby driving the stirring member 102 to rotate rapidly. This design not only improves the efficiency of stirring and avoids the deposition or stratification of the reaction materials, but also maintains the stability of the reaction system, prevents the aggregation or uneven distribution of droplets, and ensures the uniform polymerization and cross-linking reaction of the super absorbent resin, thereby improving the performance and quality of the final product. In addition, a heating element for heating can also be additionally provided on the rotating shaft 200 to achieve temperature control and regulation of the reaction system. The reaction temperature is accurately controlled during the reaction to ensure that the polymerization and cross-linking reactions are carried out within the optimal temperature range.

[0021] As a further solution of the present invention, the rotating component further includes a screw 203 connected to the top of the rotating shaft 200, the connecting frame 105 is threadedly connected to the screw 203, and the bottom of the connecting frame 105 is plugged into the cover plate 103 and the limiting rod 204 in the reactor 101; By providing a threaded connection structure between the lead screw 203 and the connection frame 105, the connection frame 105 can be accurately raised and lowered along the direction of the rotating shaft 200 driven by the lead screw 203. When the rotating shaft 200 rotates, the threaded transmission of the lead screw 203 can effectively control the position of the connection frame 105, so that it can slide smoothly, and the limit rod 204 can ensure the stability between the connection frame 105 and the reactor 101.

[0022] As a further solution of the present invention, a connecting block 205 is connected to the top of the rotating shaft 200, and the connecting block 205 is rotatably connected to the bottom of the lead screw 203. A push rod a206 is slidably connected in the connecting block 205. A top groove a207 adapted to the push rod a206 is opened on the inner wall of the lead screw 203. A spring a208 is connected between the push rod a206 and the connecting block 205. The top groove a207 is a semi-spherical groove, and one end of the push rod a206 adapted to the top groove a207 is semi-spherical. By setting the spring a208, the push rod a206 can be provided with a force to squeeze the top groove a207, thereby forming a friction force, so that the rotating shaft 200 can drive the lead screw 203 to rotate during the initial rotation. When the connecting frame 105 moves to the limit position, the rotating shaft 200 needs to continue to rotate to ensure that the stirring member 102 can stir the reaction liquid. At this time, the force of the spring a208 can be overcome to allow the push rod a206 to disengage from the top groove a207, and the rotating shaft 200 idles at the bottom of the lead screw 203, so that the connecting frame 105 can move downward when the rotating shaft 200 rotates, and the connecting frame 105 stops after moving downward to the preset position, and the rotating shaft 200 continues to rotate for the purpose of reaction.

[0023] As a further solution of the present invention, a bracket 300 is connected inside the reactor 101, a spring telescopic rod 301 is connected to the bracket 300, a boss 302 is connected to the top of the spring telescopic rod 301, the top of the boss 302 is a dome, and the boss 302 is slidably connected to the connection opening 104; By setting the spring telescopic rod 301, the spring telescopic rod 301 can limit the position of the boss 302, so that the boss 302 can be in the connection opening 104 under normal conditions, and the connection opening 104 is closed. When the connection frame 105 moves downward and drives the connection sleeve 106 to move downward, the connection sleeve 106 can touch the boss 302, so that the boss 302 can move downward and leave the connection opening 104, avoiding the position of the connection sleeve 106, so that the connection sleeve 106 can be smoothly inserted into the connection port and extend into the reactor 101. When the connection sleeve 106 leaves the reactor 101 later, the boss 302 can be reset in time by the force of the spring telescopic rod 301, and the connection opening 104 is closed again, thereby ensuring the sealing of the reactor 101 and preventing external impurities from entering the reaction system. In addition, the top of the boss 302 is designed to be a dome. When the spraying is interrupted and stopped, after the atomizing nozzle 107 shrinks in the connecting sleeve 106, if liquid accumulates, the accumulated liquid will flow from the outer wall of the connecting sleeve 106 to the boss 302. The dome on the top of the boss 302 guides the liquid and can guide it to the cover plate 103. When the connecting sleeve 106 is subsequently plugged into the connecting opening 104 again, the connecting opening 104 can also scrape off the accumulated liquid on the outer wall of the connecting sleeve 106 to prevent unnecessary impurities from entering the reaction liquid and maintain the purity of the reaction system.

[0024] As a further solution of the present invention, the spray component includes a connecting shaft 400 rotatably connected to the connecting sleeve 106, a gear 401 is connected to the connecting shaft 400, a sliding opening 402 is opened on the connecting sleeve 106, an atomizing nozzle 107 is slidably connected in the sliding opening 402, and a rack 403 meshing with the gear 401 is connected to the atomizing nozzle 107; By providing the connecting shaft 400 , when in use, the atomizing nozzle 107 can be slid in the sliding opening 402 by utilizing the rotation of the connecting shaft 400 through the gear 401 and the rack 403 , thereby achieving precise position adjustment of the atomizing nozzle 107 .

[0025] As a further solution of the present invention, the spray component further includes a connecting rod 404 slidably connected to the connecting frame 105, a spring b405 is provided between the connecting rod 404 and the connecting frame 105, a traction rope 406 is connected to one side of the connecting rod 404, one end of the traction rope 406 is wound around the connecting shaft 400, and a spring c407 is provided between the connecting shaft 400 and the connecting sleeve 106; By setting the connecting rod 404, the bottom of the connecting rod 404 protrudes from the connecting frame 105. When the connecting frame 105 moves downward to allow the connecting rod 404 to contact the cover plate 103, the connecting frame 105 continues to move downward, so that the connecting rod 404 can move relative to the connecting frame 105, so that the connecting shaft 400 can be rotated through the traction rope 406, so that the atomizing nozzle 107 can slide. The configuration of the traction rope 406 provides a convenient force transmission method to ensure that the connecting shaft 400 and the spray component can operate smoothly. In this way, when the connecting frame 105 moves downward to the preset position and the connecting sleeve 106 is inserted into the reactor 101, the atomizing nozzle 107 can slide and protrude from the connecting sleeve 106.

[0026] As a further solution of the present invention, the inner bottom surface of the connecting sleeve 106 is connected to a vibration sleeve 500, a magnetic rod 501 is slidably connected inside the vibration sleeve 500, the magnetic rod 501 is magnetically attracted to the boss 302, a top rod b502 is slidably connected to the magnetic rod 501, a top groove b503 adapted to the top rod b502 is opened on the inner wall of the vibration sleeve 500, the top groove b503 is a semi-spherical groove, one end of the top rod b502 adapted to the top groove b503 is semi-spherical, and a spring d504 is provided between the top rod b502 and the magnetic rod 501; By setting the magnetic rod 501, when the connecting sleeve 106 moves downward, the magnetic rod 501 thereon can contact with the boss 302 and be magnetically attracted to the boss 302. A certain friction force can be formed between the top rod b502 and the top groove b503 through the setting of the spring d504. When the connecting sleeve 106 continues to move downward, the friction force can be overcome, so that the top rod b502 is separated from the top groove b503 and is set with the next top groove b503. Vibration will be generated in this process. When the vibration sleeve 500 contacts the atomizing nozzle 107, the vibration will be transmitted to the atomizing nozzle 107, and the accumulated liquid on the atomizing nozzle 107 can be vibrated down and flow out along the connecting sleeve 106, helping to remove the accumulated liquid that may exist on the nozzle surface. When the connecting sleeve 106 is reset upward, the magnetic attraction between the magnetic rod 501 and the boss 302 can be used to help the magnetic rod 501 reset in the vibration sleeve 500 to prepare for the next vibration action.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for producing a super absorbent resin based on a spray suspension reaction method, characterized in that: include: Step 1: Dissolve the monomer with high water absorption potential, cross-linking agent and initiator in water or solvent in proportion to ensure that the solution is uniform, providing a basis for forming a highly absorbent resin; Step 2: adding a continuous phase and a stabilizer to the reaction device (100), adjusting the stirring speed, and connecting the spray system in the reaction device (100) to a container containing a monomer solvent; Step 3: Keeping the droplets suspended under the action of the reaction device (100) to allow polymerization and cross-linking reactions to proceed evenly, thereby forming highly absorbent resin particles having a three-dimensional network structure; Step 4: After the polymerization is completed, the resin particles are separated, washed to remove impurities, and then dried to obtain high-purity resin particles; Step 5: After the reaction is completed, the resin particles are separated, washed to remove impurities, and dried to obtain pure particles; Step 6: Screen the particles to ensure uniform particle size, and test the water absorption rate, salt resistance and swelling rate performance indicators; The reaction device (100) in step 2 comprises: Reactor (101); A stirring element (102) disposed in the reaction kettle (101) is used to maintain a uniform dispersion state of droplets in the continuous phase; A cover plate (103) is arranged on the top of the reaction kettle (101), and a plurality of connecting openings (104) are opened on the top of the cover plate (103); a connecting frame (105) disposed on the top of the cover plate (103), the connecting frame (105) being slidably connected to the cover plate (103), and a plurality of connecting sleeves (106) being disposed inside the connecting frame (105); A plurality of atomizing nozzles (107) disposed in the connecting sleeve (106); a rotating component disposed between the reaction kettle (101) and the stirring member (102), used for rotating the stirring member (102), wherein the rotating component can move the position of the connecting frame (105) downwards when rotating and stirring, and the connecting frame (105) stops when it moves downwards to a preset position; A spray component disposed on the connecting frame (105) is used to allow a plurality of atomizing nozzles (107) located in the connecting sleeve (106) to slide and protrude from the connecting sleeve (106) when the connecting frame (105) moves downward to a preset position; Wherein, the connecting sleeve (106) can open the connecting opening (104) when it moves downward to a preset position, and can close the connecting opening (104) when it moves upward to leave the cover plate (103).

2. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 1, characterized in that: The rotating component comprises a rotating shaft (200) connected to the reactor (101), the stirring element (102) is connected to the rotating shaft (200), the bottom of the reactor (101) is connected to a base (201), a motor (202) is provided on the base (201), and a driving shaft of the motor (202) is connected to the rotating shaft (200).

3. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 2, characterized in that: The rotating component also includes a lead screw (203) connected to the top of the rotating shaft (200), the connecting frame (105) is threadedly connected to the lead screw (203), and the bottom of the connecting frame (105) is inserted into the cover plate (103) and the limiting rod (204) in the reaction kettle (101).

4. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 3, characterized in that: The top of the rotating shaft (200) is connected to a connecting block (205), and the connecting block (205) is rotatably connected to the bottom of the lead screw (203). A push rod a (206) is slidably connected inside the connecting block (205). The inner wall of the lead screw (203) is provided with a top groove a (207) adapted to the push rod a (206). A spring a (208) is connected between the push rod a (206) and the connecting block (205). The top groove a (207) is a semi-spherical groove, and one end of the push rod a (206) adapted to the top groove a (207) is semi-spherical.

5. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 1, characterized in that: The reactor (101) is connected with a bracket (300), the bracket (300) is connected with a spring telescopic rod (301), the top of the spring telescopic rod (301) is connected with a boss (302), the top of the boss (302) is a dome, and the boss (302) is slidably connected in the connection opening (104).

6. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 1, characterized in that: The spray component comprises a connecting shaft (400) rotatably connected to a connecting sleeve (106), a gear (401) being connected to the connecting shaft (400), a sliding opening (402) being provided on the connecting sleeve (106), the atomizing nozzle (107) being slidably connected in the sliding opening (402), and a rack (403) meshing with the gear (401) being connected to the atomizing nozzle (107).

7. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 6, characterized in that: The spray component also includes a connecting rod (404) slidably connected to the connecting frame (105), a spring b (405) is provided between the connecting rod (404) and the connecting frame (105), a traction rope (406) is connected to one side of the connecting rod (404), one end of the traction rope (406) is wound around the connecting shaft (400), and a spring c (407) is provided between the connecting shaft (400) and the connecting sleeve (106).

8. The method for producing a super absorbent resin based on a spray suspension reaction method according to claim 5, characterized in that: The inner bottom surface of the connecting sleeve (106) is connected to a vibration sleeve (500), a magnetic rod (501) is slidably connected inside the vibration sleeve (500), the magnetic rod (501) is magnetically attracted to the boss (302), a top rod b (502) is slidably connected to the magnetic rod (501), an inner wall of the vibration sleeve (500) is provided with a top groove b (503) adapted to the top rod b (502), the top groove b (503) is a semi-spherical groove, one end of the top rod b (502) adapted to the top groove b (503) is semi-spherical, and a spring d (504) is provided between the top rod b (502) and the magnetic rod (501).

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