High-viscosity polymer tackifying reactor

Abstract

The utility model discloses a high-viscosity polymer tackifying reactor which comprises a reaction kettle, an outer cylinder is sleeved outside the reaction kettle, a kettle cover is arranged at the top of the reaction kettle, a guide pipe is communicated with the top of the kettle cover, a preheating box is assembled at the tail end of the guide pipe, and the guide pipe is communicated with the interior of the preheating box; a heating assembly is arranged in the preheating box, one end of the heating assembly is communicated with the reaction kettle, and the high-viscosity polymer enters the heating assembly, then is subjected to cold-heat interaction with steam guided into the preheating box by the guide pipe, and then enters the reaction kettle to be reheated. According to the utility model, the high-viscosity polymer to be fed into the reaction kettle is preheated by utilizing the steam generated when the high-viscosity polymer is heated and thickened, so that the viscosity of polymer melt or solution can be temporarily reduced, and the fluidity of the polymer melt or solution is enhanced. The method is crucial to uniform mixing and pumping of the materials and smooth transportation of the materials in a pipeline, energy consumption can be reduced, and the processing efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to a high-viscosity polymer tackifier reactor. Background Art

[0002] In the field of polymer production, due to the characteristics of polymers such as high viscosity, low heat transfer coefficient, large mass transfer resistance, and slow flow rate, the mass transfer and heat transfer of polymers are relatively difficult, and it is difficult to remove small monomer molecules in the polymer or small molecules generated during the polymerization reaction, thus affecting the production efficiency of polymers and the quality of polymer products.

[0003] A polymer continuous tackifier reactor disclosed in Chinese Utility Model Patent CN215087183U has a high-efficiency heat exchanger configured above the tackifier reactor. High-viscosity polymer fluid enters the heat exchange tube from the material inlet. After being heated by the high-efficiency heat exchanger, it enters the fluid distributor of the tackifier reactor, and then the polymer fluid falls onto the liquid-holding heat exchange plate. Under the action of gravity, it flows along the inclined direction of the liquid-holding heat exchange plate, so that the polymer is continuously heated on the liquid-holding heat exchange plate to make up for the heat carried away by the gasification of small molecules after entering the tackifier reactor, thereby ensuring that the high-molecular polymer maintains good fluidity in the reactor. At the same time, the polymer fluid is distributed and heated in the form of a thin film on the liquid-holding heat exchange plate, and small molecules can easily pass through the gas-liquid two-phase interface and enter the gas phase, and flow out of the tackifier reactor from the gas phase outlet, thus completing the overflow of small molecules. After the small molecules in the polymer fluid flowing through the liquid-holding heat exchange plate are removed, the viscosity is further increased, thereby achieving the purpose of increasing viscosity or removing small monomer molecules.

[0004] In the prior art, the consistency of polymers is also increased by heating, but the steam generated during heating is directly discharged, resulting in waste of waste heat. If this part of waste heat can be fully utilized to preheat the polymers, then to a certain extent, the problem of difficult heating caused by the low heat transfer coefficient of polymers can be solved. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the problems in the above background art, the utility model adopts the following technical solutions.

[0007] A high-viscosity polymer thickening reactor, comprising a reaction kettle, an outer cylinder is sleeved outside the reaction kettle, a kettle cover is arranged at the top of the reaction kettle, a guiding pipe is communicated at the top of the kettle cover, a preheating box is assembled at the end of the guiding pipe, and the guiding pipe is internally communicated with the preheating box; a heating component is arranged inside the preheating box, one end of the heating component is communicated with the reaction kettle, and after the high-viscosity polymer enters the heating component, it performs heat and cold interaction with the steam guided into the preheating box by the guiding pipe, and then enters the reaction kettle for reheating.

[0008] Preferably, the heating component includes preheating pipes arranged equidistantly in the preheating box, the preheating pipes are arranged in a meandering shape in the preheating box, one end of the preheating pipe penetrates through the bottom of the preheating box as an input end, and the other end of the preheating pipe penetrates through the side surface of the preheating box as an output end.

[0009] Preferably, horn joints are arranged at both the output end and the input end of the preheating pipe. The horn joints at the output end of the preheating pipe are commonly connected to an input pipe, and the horn joints at the input end of the preheating pipe are commonly connected to an output pipe. The output pipe penetrates through the outer cylinder and the side surface of the reaction kettle and is communicated with the inside of the reaction kettle.

[0010] Preferably, a driving rod is arranged in the middle of the reaction kettle, spiral stirring vanes are arranged along the wall surface of the driving rod, a space is reserved between the spiral stirring vanes and the inner wall of the reaction kettle, a driver is installed in the middle of the bottom of the outer cylinder, and the driving end of the driver penetrates through the outer cylinder and the reaction kettle and is connected to the end of the driving rod.

[0011] Preferably, a plurality of dividing strips are arranged at intervals along the circumferential direction on the inner wall of the reaction kettle, and a plurality of dividing grooves are arranged equidistantly along the axial direction on the dividing strips.

[0012] Preferably, heating wires are installed on the inner wall of the outer cylinder, the inner diameter of the heating wires is equal to the outer diameter of the reaction kettle, and the high-viscosity polymer inside the reaction kettle is heated and thickened through the heating wires.

[0013] Preferably, the bottom of the reaction kettle is connected to the bottom of the outer cylinder, a discharge port is arranged at the bottom of the reaction kettle and penetrates through the bottom of the outer cylinder, and a valve is installed on the discharge port. [[ID=,19]]

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1) The present utility model utilizes the steam generated when heating and thickening the high-viscosity polymer to preheat the high-viscosity polymer to be fed into the reaction kettle, thereby being able to temporarily reduce the viscosity of the polymer melt or solution and enhance its fluidity. This is crucial for the uniform mixing, pumping, and smooth transportation of the material in the pipeline, can reduce energy consumption, and improve processing efficiency. Many polymer thickening processes are based on chemical reactions, and these reactions usually accelerate with the increase in temperature. Therefore, preheating can not only accelerate the thickening reaction but also shorten the time required to reach the target viscosity, thereby improving production efficiency.

[0016] (2) Further, in actual production, some thickeners or other additives are added to the polymer melt. Preheating helps their dissolution and dispersion, ensuring the uniform distribution of the additives, thereby achieving a more uniform thickening effect. Although preheating itself consumes energy, it can reduce the total energy consumption in the subsequent processing. The reduced viscosity reduces the frictional losses during the extrusion or mixing process, and the use of waste heat for preheating in this utility model further reduces costs.

[0017] (3) This utility model is provided with a dividing strip inside the reaction kettle. The design of the dividing strip is mainly used to improve the flow state of the liquid, especially for the fluid treatment process with high viscosity or the need to enhance heat transfer and mass transfer effects. It can generate additional resistance when the liquid flows, forcing the fluid to bypass and pass through narrow channels. Such a design will cause the fluid to flow more turbulently, forming strong vortices, that is, turbulence. The turbulent state helps to break the laminar boundary layer inside the fluid and accelerate the energy exchange inside the fluid. In the thickening reaction, the reactants often need to contact on a larger phase interface to react effectively. The design of the dividing strip increases the contact area between the fluid and the fixed surface, and at the same time promotes the renewal of the fluid surface, that is, the fresh unreacted fluid continuously contacts the reaction interface, improving the reaction efficiency. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure diagram of the high-viscosity polymer thickening reactor in this utility model.

[0019] Figure 2 It is a sectional view of the high-viscosity polymer thickening reactor in this utility model.

[0020] Figure 3 It is a sectional view of the reaction kettle in this utility model.

[0021] Figure 4 It is a structural diagram of the interior of the preheating box in this utility model.

[0022] Figure 5 It is a structural diagram of the heating component in this utility model.

[0023] The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0024] 100, reaction kettle; 101, spiral stirring blade; 1011, driver; 102, dividing strip; 103, outer cylinder; 1031, heating wire; 104, kettle cover; 1041, guiding pipe;

[0025] 200, preheating box; 201, pressure cover; 202, preheating pipe; 2021, horn joint; 2022, input pipe; 2023, output pipe. Detailed Description of the Invention

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings of the specification.

[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that can be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. The present utility model provides the following embodiments.

[0029] Refer to Figure 1 and Figure 2 which is the structural diagram of the high-viscosity polymer thickening reactor of this embodiment. The thickening reactor in this embodiment includes a reaction kettle 100. An outer cylinder 103 is sleeved outside the reaction kettle 100. A heating wire 1031 is installed on the inner wall of the outer cylinder 103. The inner diameter of the heating wire 1031 is equal to the outer diameter of the reaction kettle 100. In this embodiment, the high-viscosity polymer is placed inside the reaction kettle 100. The high-viscosity polymer inside the reaction kettle 100 is heated and thickened through the heating wire 1031. At the same time, to ensure the integrity of the equipment, the bottom of the reaction kettle 100 is connected to the bottom of the outer cylinder 103 in this embodiment, and a discharge port is provided at the bottom of the reaction kettle 100 and penetrates through the bottom of the outer cylinder 103. A valve is installed on the discharge port to facilitate discharging.

[0030] Refer to Figure 1 and Figure 2 , in this embodiment, a kettle cover 104 is provided at the top of the reaction kettle 100. A guiding pipe 1041 is connected to the top of the kettle cover 104. A preheating box 200 is assembled at the end of the guiding pipe 1041. The guiding pipe 1041 communicates with the inside of the preheating box 200. In the solution of the present utility model, heating is used for thickening. Therefore, high-temperature steam will inevitably be generated after heating. In order to utilize this steam, in this embodiment, the steam is collected into the preheating box 200 by using the guiding pipe 1041. At the same time, a heating component is arranged inside the preheating box 200. One end of the heating component is connected to the inside of the reaction kettle 100. After the high-viscosity polymer enters the heating component, it undergoes heat and cold interaction with the steam guided into the preheating box 200 by the guiding pipe 1041, and then enters the reaction kettle 100 for reheating. Preheating can temporarily reduce the viscosity of the polymer melt or solution and enhance its fluidity. This is crucial for the uniform mixing, pumping, and smooth transportation of the material in the pipeline, which can reduce energy consumption and improve processing efficiency.

[0031] Refer to Figure 4 and Figure 5 In this embodiment, the heating component includes preheating tubes 202 arranged equidistantly in the preheating chamber 200. The preheating tubes 202 are arranged in a meandering shape in the preheating chamber 200. The high-viscosity polymer exchanges heat in the preheating chamber 200 through the meandering preheating tubes 202. Since the preheating tubes 202 have a relatively large surface area due to their structure, the high-viscosity polymer can be better heated. One end of the preheating tube 202 penetrates the bottom of the preheating chamber 200 as the input end, and the other end of the preheating tube 202 penetrates the side of the preheating chamber 200 as the output end. Further, in this embodiment, horn connectors 2021 are provided at both the output end and the input end of the preheating tube 202. The horn connectors 2021 at the output end of the preheating tube 202 are commonly connected to an input tube 2022, and the horn connectors 2021 at the input end of the preheating tube 202 are commonly connected to an output tube 2023. The output tube 2023 penetrates the outer cylinder 103 and the side of the reaction kettle 100 and then communicates with the inside of the reaction kettle 100. In order to enable the high-viscosity polymer to better enter the preheating tube 202 and be better collected and enter the reaction kettle 100 after preheating, in this embodiment, the high-viscosity polymer that needs to be thickened again is injected into the preheating tube 202 through the input tube 2022. Since there are multiple preheating tubes 202, in order to meet the distribution, the diameter of the input tube 2022 in this embodiment is larger than that of the preheating tube 202. Similarly, in order to better collect the high-viscosity polymer preheated by the preheating tube 202, the diameter of its output tube 2023 is also larger than that of the preheating tube 202. Further, by providing the horn connectors 2021, pipes with different diameters can be better connected.

[0032] Refer to Figure 3, in the reactor 100 of this embodiment, a driving rod is provided in the center, and spiral stirring vanes 101 are arranged along the wall surface of the driving rod. A space is reserved between the spiral stirring vanes 101 and the inner wall of the reactor 100. At the center of the bottom of the outer cylinder 103, a driver 1011 is installed. The driving end of the driver 1011 penetrates through the outer cylinder 103 and the reactor 100 and is connected to the end of the driving rod. In this embodiment, the driver 1011 drives the driving rod connected with the spiral stirring vanes 101 to rotate, so as to stir the highly viscous polymer heated in the reactor 100. On the one hand, it makes the highly viscous polymer evenly heated, and on the other hand, it makes the highly viscous polymer have a certain fluidity, forming a shear force to improve the thickening efficiency. In order to further improve the thickening efficiency, in this embodiment, a plurality of dividing strips 102 are arranged at intervals along the circumferential direction on the inner wall of the reactor 100. A plurality of dividing grooves are equidistantly arranged along the axial direction on the dividing strips 102. When the highly viscous polymer flows due to the rotation of the spiral stirring vanes 101 and impacts the dividing strips 102, turbulence is formed. The design of the dividing strips 102 is mainly used to improve the flow state of the liquid, especially for the fluid treatment process with high viscosity or the need to enhance the heat transfer and mass transfer effects. It can generate additional resistance when the liquid flows, forcing the fluid to bypass and pass through the narrow channels. Such a design will cause the fluid to flow more turbulently, forming strong vortices, that is, turbulence. The turbulent state helps to break the laminar boundary layer in the fluid, accelerate the energy exchange inside the fluid, and can accelerate the distribution of solutes and the contact frequency of reaction active sites in the thickening reaction.

[0033] The above content further elaborates on the present invention in combination with specific embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present invention.

Claims

1. A high-viscosity polymer thickening reactor, comprising a reaction kettle (100), and an outer cylinder (103) is sleeved outside the reaction kettle (100). It is characterized in that: A kettle cover (104) is arranged at the top of the reaction kettle (100), a guiding pipe (1041) is communicated with the top of the kettle cover (104), a preheating box (200) is assembled at the end of the guiding pipe (1041), and the guiding pipe (1041) is internally communicated with the preheating box (200). The preheating box (200) is internally provided with a heating component, one end of the heating component is communicated with the reaction kettle (100), after the high-viscosity polymer enters the heating component, it conducts heat exchange with the steam guided into the preheating box (200) by the guiding pipe (1041), and then enters the reaction kettle (100) for reheating.

2. The highly viscous polymer tackifying reactor according to claim 1, wherein: The heating component includes preheating pipes (202) arranged at equal intervals in the preheating box (200), the preheating pipes (202) are arranged in a meandering shape in the preheating box (200), one end of the preheating pipe (202) penetrates through the bottom of the preheating box (200) as an input end, and the other end of the preheating pipe (202) penetrates through the side surface of the preheating box (200) as an output end.

3. The highly viscous polymer tackifying reactor according to claim 2, wherein: Horn connectors (2021) are arranged at both the output end and the input end of the preheating pipe (202). The horn connectors (2021) at the output end of the preheating pipe (202) are jointly connected to an input pipe (2022), and the horn connectors (2021) at the input end of the preheating pipe (202) are jointly connected to an output pipe (2023). The output pipe (2023) penetrates through the outer cylinder (103) and the side surface of the reaction kettle (100) and then is communicated with the inside of the reaction kettle (100).

4. A high-viscosity polymer tackifier reactor according to claim 1, characterized in that: A driving rod is arranged in the middle of the reaction kettle (100), and spiral stirring vanes (101) are arranged along the wall surface of the driving rod. A space is reserved between the spiral stirring vanes (101) and the inner wall of the reaction kettle (100). A driver (1011) is installed in the middle of the bottom of the outer cylinder (103), and the driving end of the driver (1011) penetrates through the outer cylinder (103) and the reaction kettle (100) and then is connected to the end of the driving rod.

5. A highly viscous polymer tackifying reactor according to claim 4, characterized in that: A plurality of dividing strips (102) are arranged at intervals along the circumferential direction on the inner wall of the reaction kettle (100), and a plurality of dividing grooves are equidistantly arranged along the axial direction on the dividing strips (102).

6. The highly viscous polymer tackifying reactor according to claim 1, characterized in that: A heating wire (1031) is installed on the inner wall of the outer cylinder (103), the inner diameter of the heating wire (1031) is equal to the outer diameter of the reaction kettle (100), and the high-viscosity polymer inside the reaction kettle (100) is heated and thickened by the heating wire (1031).

7. A high-viscosity polymer tackifier reactor according to claim 1, characterized in that: The bottom of the reaction kettle (100) is connected to the bottom of the outer cylinder (103). A discharge port is arranged at the bottom of the reaction kettle (100) and penetrates through the bottom of the outer cylinder (103), and a valve is installed on the discharge port.

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