A kind of AMPS copolymer water-reducing dispersant synthesis reaction kettle

Abstract

The utility model discloses a kind of for AMPS copolymer water-reducing dispersant synthesis reaction kettle, comprising: reaction kettle body, the reaction kettle body has the reaction cavity for accommodating reaction liquid;Stirring device, set in the reaction kettle body;Dropwise adding pipe, connected to the reaction kettle body, for dropwise adding reactant material in the reaction cavity;First mixer, set at the outlet of the dropwise adding pipe, the first mixer includes first mixer body and the heat pipe array close to the mixer body, the heat pipe array surface has the microgroove for while assisting mixing the reaction material in heat conduction.Microgroove structure enhances mixing effect, improves reaction uniformity by heat pipe array to realize efficient heat transfer, quickly adjust reactant material temperature.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and more specifically, to a reaction vessel for synthesizing AMPS copolymer water-reducing dispersant. Background Technology

[0002] AMPS copolymer water-reducing and dispersing agents can significantly reduce the water content of cement or concrete mixtures, improve their fluidity, enhance their workability, and increase their hardened strength. Currently

[0003] During the production of AMPS copolymer water-reducing dispersants, the viscosity of AMPS itself and other comonomers (such as acrylamide and acrylic acid) in high-concentration aqueous solutions increases significantly, especially as the polymerization reaction progresses. Furthermore, as the polymerization reaction continues, the monomers gradually transform into polymers, causing a sharp increase in solution viscosity. This is because the molecular weight of the polymer is much larger than that of the monomer, and the entanglement and interaction between the macromolecular chains lead to increased viscosity.

[0004] The presence of high-viscosity materials can bring a series of problems to production, such as difficulty in mixing, reduced heat transfer efficiency, and uneven reaction.

[0005] In summary, how to achieve efficient mixing and dispersion of reactants in high-viscosity polymerization reaction systems is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The main objective of this invention is to provide a reaction vessel for synthesizing AMPS copolymer water-reducing dispersant, in order to solve the problem of difficulty in mixing and dispersing materials due to large annual volumes in the production process of AMPS copolymer water-reducing dispersant in the prior art.

[0007] To achieve the above objectives, according to one aspect of the present invention, a reaction vessel for synthesizing AMPS copolymer water-reducing dispersant is provided, comprising:

[0008] A reaction vessel body having a reaction chamber for containing a reaction liquid;

[0009] A stirring device is installed inside the reactor body;

[0010] A dropper, connected to the reactor body, is used to drop reactants into the reaction chamber.

[0011] A first mixer is disposed at the outlet of the dropping tube. The first mixer includes a first mixer body and a heat pipe array in close contact with the mixer body. The surface of the heat pipe array has microgrooves for assisting in the mixing of the reactants while conducting heat. The heat pipe array achieves efficient heat transfer and rapid adjustment of the reactant temperature, while the microgroove structure enhances the mixing effect and improves reaction uniformity.

[0012] Preferably, the heat pipe array comprises multiple spiral heat pipes, each with microgrooves on its surface. The first mixer body includes channels with a spiral or fractal geometry, and the channels are embedded with protrusions for adjusting the flow rate. The spiral heat pipes can further increase the heat transfer area and improve the heat transfer efficiency; the spiral or fractal channel and protrusion design enhance material mixing and avoid uneven local reactions.

[0013] Preferably, the protrusion is sheet-like, and the angle between the protrusion and the axis of the channel is 5° to 30°. This protrusion setting is used to control the flow rate, improve the mixing effect, and reduce dead flow angles.

[0014] Preferably, the first mixer is fixed to the outlet of the dropping tube via a flange connection or a threaded connection, and the outlet of the first mixer is located close to the stirring area of ​​the stirring device. This installation method ensures that the first mixer is securely installed and that the materials are fully mixed before entering the reaction chamber, thereby improving reaction efficiency.

[0015] Preferably, the bottom of the reactor body is provided with a second heat pipe array in a vortex shape to enhance the mixing of materials at the bottom of the reactor, improve the temperature uniformity at the bottom of the reactor, and prevent local overheating or incomplete reaction.

[0016] Preferably, the second heat pipe array has a predetermined spacing with respect to the bottom of the vessel. The surface of the second heat pipe array is provided with microgrooves and a hydrophilic coating. The predetermined spacing ensures the flowability of the material at the bottom of the vessel, while the microgrooves and hydrophilic coating further enhance heat transfer and mixing, reducing scaling.

[0017] Preferably, the reactor body is provided with a jacket, which connects the first heat pipe array and the second heat pipe array. By uniformly regulating the temperature of the first and second heat pipe arrays through the jacket, the overall temperature of the reactor can be precisely controlled, thereby improving energy utilization.

[0018] Preferably, the stirring device includes a stirring shaft and stirring blades connected to the end of the stirring shaft, with the stirring shaft inserted into the reactor body so that the stirring blades are located within the reaction chamber. The stirring device further enhances the mixing of materials within the reaction chamber, improving reaction efficiency and uniformity.

[0019] By applying the technical solution of this utility model, a first mixer containing a heat pipe array is set at the outlet of the dropping tube. Utilizing the high-efficiency heat transfer characteristics of the heat pipes, the temperature of the reactants is rapidly adjusted, reducing local temperature differences. The microgroove structure enhances the contact area and mixing effect between materials. The use of spiral heat pipes and channels with spiral or fractal geometry further increases the heat transfer area, strengthens material mixing, effectively avoids uneven local reactions, and improves the uniformity of the reaction.

[0020] The addition of a stirring shaft and stirring blades further enhances the mixing of materials within the reaction chamber. These measures, combined, significantly improve the mixing efficiency and reaction uniformity of high-viscosity reactants, thereby increasing product quality and yield. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the internal structure of a reactor for synthesizing AMPS copolymer water-reducing dispersant according to the present invention is shown.

[0023] Figure 2 It shows Figure 1 A three-dimensional view of the reactor used for the synthesis of AMPS copolymer water-reducing dispersant;

[0024] Figure 3 It shows Figure 1 Front view of the reactor used for the synthesis of AMPS copolymer water-reducing dispersant;

[0025] Figure 4 It shows along Figure 3 The sectional view AA obtained by cutting along the cutting line in the middle;

[0026] Figure 5 It shows Figure 1 A top view of the reactor used for the synthesis of AMPS copolymer water-reducing dispersant after the top cover has been removed.

[0027] The above figures include the following reference numerals:

[0028] 1-Reaction vessel body; 2-First mixer; 21-First heat pipe array; 22-Mixer body; 3-Stirring device; 31-Stirring shaft; 32-Stirring blade; 4-Second heat pipe array; 5-Support leg. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 5As shown, this utility model embodiment provides a high-efficiency mixing reactor for the synthesis of AMPS copolymer dedispersants, aiming to solve the problem of difficult mixing and dispersion caused by the high viscosity of the reaction liquid in the prior art, thereby improving reaction uniformity, product quality, and production efficiency. The following is combined with... Figures 1-5 This document describes in detail the structure, assembly, and operation of the reactor. The reactor in this embodiment includes a reactor body 1, a stirring device 3, a dropping pipe, and a first mixer 2. The reactor body 1 has a reaction chamber for containing the reaction liquid. The stirring device 3 is disposed inside the reactor body 1. The dropping pipe is connected to the reactor body 1 for adding reactants to the reaction chamber. The first mixer 2 is disposed at the outlet of the dropping pipe. The first mixer 2 includes a first mixer 2 body and a heat pipe array closely attached to the mixer body 2. The surface of the heat pipe array has microgrooves for assisting in mixing the reactants while conducting heat. The heat pipe array achieves efficient heat transfer and rapid temperature adjustment of the reactants, while the microgroove structure enhances the mixing effect and improves reaction uniformity.

[0031] According to one embodiment of this utility model, the reactor body 1 is made of corrosion-resistant stainless steel, is cylindrical, and has a slightly conical bottom to facilitate material discharge. The reactor body 1 has a reaction chamber for containing the reaction liquid, suitable for the acidic environment of the AMPS copolymer polymerization reaction. The reaction chamber is designed to withstand certain pressures and temperatures, ensuring a safe and stable reaction process.

[0032] According to one embodiment of the present invention, the stirring device 3 includes a stirring shaft 31 and stirring blades 32 connected to the end of the stirring shaft 31. The stirring shaft 31 is inserted from the top of the reactor, and the stirring blades 32 are connected to the bottom. The stirring shaft 31 is driven by a top motor, and the adjustable speed ensures thorough mixing of the high-viscosity reaction liquid. This is a common technique in the art and will not be described in detail here.

[0033] According to one embodiment of the present invention, the dropper is made of a corrosion-resistant material (such as polytetrafluoroethylene), inserted from the top of the reactor, with the outlet located above or beside the stirring blade 32. The dropper is used to slowly add the initiator and monomer solution into the reaction chamber to ensure that the reactants gradually enter the reaction system.

[0034] According to one embodiment of this utility model, a first mixer 2 is located at the outlet of the dripping pipe and is fixed by a threaded or flanged connection. The outlet is close to the stirring blade 32 to ensure that the dripped material is quickly dispersed into the reaction liquid. A second heat pipe array 4 is located at the bottom of the reactor and is arranged in a vortex shape to enhance the mixing and heat transfer of the material at the bottom of the reactor. A jacket surrounds the outer wall of the reactor and is made of corrosion-resistant material. Heating or cooling medium is circulated inside the jacket to regulate the temperature of the reaction chamber. Multiple corrosion-resistant supports 5 support the reactor body 1, and a shock-absorbing structure is provided at the bottom to ensure stable operation of the equipment.

[0035] According to one embodiment of this utility model, the first mixer 2 is designed to achieve rapid mixing of the added material and the high-viscosity reaction liquid, while optimizing the local heat field distribution. For example... Figure 4 As shown, the first mixer 2 includes a first mixer 2 body and a first heat pipe array 21. The first mixer 2 body is a short tube, internally processed with microchannels of helical or fractal geometry. The helical channels guide the fluid through a continuous helical path, while the fractal geometric channels increase fluid segmentation and turbulence through branching structures. This is a common technique in the art and will not be described in detail here. Embedded within the channels are sheet-like protrusions (not shown in the attached figure), made of an elastic material (such as silicone). The protrusions are at a certain angle to the channel axis, and the angle can be dynamically adjusted with fluid pressure to adapt to changes in the viscosity of the reaction liquid. The protrusion design reduces dead zones, enhances turbulence, and promotes rapid fusion of the added material with the reaction liquid. The added material is segmented into multiple fine fluid streams through the microchannels, generating strong turbulence and rapidly mixing with the reaction liquid, avoiding excessively high local concentrations or uneven reactions.

[0036] According to one embodiment of this utility model, the first heat pipe array 21 comprises multiple spiral-shaped micro heat pipes made of a high thermal conductivity material (such as copper or stainless steel) and filled with a low-boiling-point working fluid. The spiral shape of the heat pipes increases the heat transfer area and ensures close contact with the body of the first mixer 2, guaranteeing efficient heat transfer. The surface of the heat pipes is machined with microgrooves and coated with a hydrophilic coating. The microgrooves, by increasing the fluid contact area and inducing local turbulence, not only assist heat transfer but also enhance the mixing effect of the added material. The heat pipe array can quickly transfer the exothermic reaction in the dropping zone to the jacket, maintaining uniform local temperature and preventing side reactions caused by overheating. The turbulence effect of the microgrooves, combined with the microchannel protrusions, further improves mixing efficiency.

[0037] According to one embodiment of this utility model, the first mixer 2 is fixed to the outlet of the dripping tube by a threaded or flanged connection, and its installation position is close to the stirring blade 32 to ensure that the dripping material is fully mixed before entering the reaction chamber. The connection method facilitates disassembly and cleaning, and the sealing structure is corrosion-resistant and can withstand a certain pressure.

[0038] According to one embodiment of the present invention, such as Figure 4 and Figure 5As shown, the second heat pipe array 4 is located at the bottom of the reactor and arranged in a vortex shape. This design aims to enhance the mixing and heat transfer of the high-viscosity material at the bottom of the reactor, addressing issues of material deposition and uneven localized temperature. The second heat pipe array 4 contains a low-boiling-point working fluid, covering most of the reactor bottom area. It is supported by a frame within the reactor body, maintaining an appropriate distance from the bottom to ensure material flowability. The vortex design guides circumferential fluid movement, promoting the circulation and mixing of the material at the bottom with the upper reaction liquid. The heat pipes used in the second heat pipe array 4 have microgrooved surfaces. The second heat pipe array 4 transfers the exothermic reaction heat at the bottom of the reactor to the jacket, maintaining a uniform temperature at the bottom and preventing localized overheating or incomplete reaction. The vortex-shaped heat pipes and microgrooves induce circumferential turbulence, promoting the circulation of the high-viscosity material at the bottom of the reactor and reducing deposition. The second heat pipe array 4 works in conjunction with the stirring device 3, reducing the load on the stirring device 3 and improving overall mixing efficiency.

[0039] According to one embodiment of this utility model, the outer wall of the reactor is equipped with a jacket made of corrosion-resistant material, and the interior is designed with a multi-layer microchannel structure. The jacket is connected to the first heat pipe array 21 and the second heat pipe array 4 through pipes to achieve overall and local temperature control of the reaction chamber. Heating or cooling medium is introduced into the jacket, and efficient heat exchange is achieved through the high specific surface area of ​​the jacket. The jacket and the heat pipe array work together to quickly respond to the exothermic reaction, maintain a uniform temperature in the reaction chamber, and reduce local temperature differences.

[0040] According to one embodiment of this invention, the reaction solution is a mixture of AMPS monomer, acrylic monomer, and solvent, possessing high viscosity suitable for polymerization reactions. The added material is an initiator solution, slowly added through a dropper. The stirring device 3 operates at an appropriate speed, and a cooling or heating medium is circulated through the jacket to control the reaction temperature.

[0041] In use, the reaction solution is added to the reactor, and the stirring device 3 is started to promote mixing of materials in the reaction chamber. The initiator is added through a dropper, and the first mixer 2 rapidly disperses the initiator into the reaction solution, while the heat pipe array simultaneously regulates the temperature of the dropper zone. The exothermic reaction is transferred to the jacket by the first heat pipe array 21, maintaining a uniform temperature in the dropper zone. The second heat pipe array 4 at the bottom of the reactor promotes material circulation, prevents sedimentation, and works with the jacket to regulate the temperature at the bottom of the reactor. After the reaction is complete, the product is collected through the bottom discharge valve, and the first mixer 2 and the bottom heat pipe array are cleaned. The first heat pipe array 21 and the second heat pipe array 4 work in conjunction with the jacket to ensure a uniform temperature in the reaction chamber, without significant local overheating or overcooling. The resulting AMPS copolymer has a uniform molecular weight distribution, improved water-reducing properties and slump retention, and increased product yield.

[0042] According to one embodiment of this utility model, the reactor of this embodiment is suitable for the industrial production of AMPS copolymer dedispersants and can also be used for laboratory research through structural adjustments. The design can be extended to other high-viscosity polymerization reactions (such as polycarboxylate superplasticizers and polyacrylamide), adapting to different reaction conditions and material properties by adjusting the number of heat pipes, the shape of microchannels, or the angle of protrusions. The modular design of the reactor facilitates maintenance and upgrades, making it suitable for various chemical process scenarios. The above embodiments, through general description and detailed explanation of technical features, fully demonstrate the advantages of this utility model in solving the problem of mixing high-viscosity materials.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reactor for synthesizing AMPS copolymer water-reducing dispersant, characterized in that, include: A reaction vessel body having a reaction chamber for containing a reaction liquid; A stirring device is installed inside the reactor body. A dropper, connected to the reactor body, is used to drop reactants into the reaction chamber. A first mixer is disposed at the outlet of the dropper. The first mixer includes a first mixer body and a heat pipe array in close contact with the mixer body. The surface of the heat pipe array has microgrooves for assisting in mixing the reactants while conducting heat.

2. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The heat pipe array comprises multiple spiral heat pipes, each with microgrooves on its surface.

3. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 1 or 2, characterized in that, The first mixer body includes channels with a spiral or fractal geometry, and the channels are embedded with protrusions for adjusting the flow rate.

4. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 3, characterized in that, The protrusion is sheet-like, and the angle between the protrusion and the axis of the channel is 5° to 30°.

5. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The first mixer is fixed to the outlet of the drip tube by a flange connection or a threaded connection, and the outlet of the first mixer is located close to the stirring area of ​​the stirring device.

6. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The bottom of the reactor body is provided with a second heat pipe array in a vortex shape.

7. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 6, characterized in that, The surface of the second heat pipe array is provided with microgrooves, and the surface of the second heat pipe array has a hydrophilic coating.

8. The reactor for synthesizing AMPS copolymer water-reducing dispersant according to claim 1, characterized in that, The stirring device includes a stirring shaft and stirring blades connected to the end of the stirring shaft. The stirring shaft is inserted into the reactor body so that the stirring blades are located inside the reaction chamber.

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