A pre-polycondensation reactor heating partition structure

Abstract

The utility model discloses a kind of precondensation reaction kettle heating partition plate structure, to provide a kind of precondensation reaction kettle heating partition plate structure which can effectively solve the technical problem of the heating structure of the precondensation reaction kettle in prior art insufficient, uneven, and overall heating efficiency is not high for the heating of material.It includes heating plate group in precondensation reaction kettle, heating plate group is located between the material inlet and material outlet of precondensation reaction kettle, and heating plate group includes several heating partition plates distributed in sequence with interval;The inside of the heating partition plate is provided with partition plate cavity, and heat medium flow channel is provided in partition plate cavity, heat medium inlet pipe and heat medium outlet pipe are connected on heat medium flow channel, and heat medium inlet pipe and heat medium outlet pipe extend out of the precondensation reaction kettle;Part of the edge of the heating partition plate has the flow-through port for material flow between the inner wall of the precondensation reaction kettle.

Description

Technical Field

[0001] This utility model relates to the technical field of prepolymerization reactors, specifically to a heating partition structure for a prepolymerization reactor. Background Technology

[0002] A prepolymerization reactor is a type of chemical equipment commonly used in the chemical, pharmaceutical, and food industries, especially in the preparation of polymer compounds. Prepolymerization reactors are typically used in complete sets of equipment where materials flow between multiple devices according to the process design, and each device usually has specific reaction temperature requirements.

[0003] In practice, it has been found that the temperature of the material flowing from the upstream equipment to the prepolymerization reactor decreases, affecting production within the reactor. Therefore, it is necessary to heat the material using the prepolymerization reactor's heating structure to ensure the reaction proceeds normally. However, the existing heating structure of the prepolymerization reactor cannot heat the material sufficiently and uniformly, resulting in low overall heating efficiency.

[0004] For example, Chinese Patent Publication No. CN119680505A, entitled "A Prepolymerization Reactor," includes a reactor body with an inner chamber and an outer chamber. A temperature control pipeline is located in the outer chamber near the outer wall of the inner chamber, and this pipeline is used to control the temperature of the inner chamber. This prepolymerization reactor, which controls the temperature of the inner chamber through the temperature control pipeline in the outer chamber, also suffers from the problem of difficulty in fully and uniformly heating the material, resulting in low overall heating efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a heating partition structure for a prepolymerization reactor that can effectively solve the technical problems of insufficient and uneven heating of materials and low overall heating efficiency in the heating structure of the prepolymerization reactor in the prior art.

[0006] The technical solution of this utility model is: A heating baffle structure for a prepolymerization reactor includes a heating plate assembly disposed inside the prepolymerization reactor. The heating plate assembly is located between the material inlet and the material outlet of the prepolymerization reactor. The heating plate assembly includes a plurality of heating baffles arranged sequentially at intervals. The heating baffle has a baffle cavity inside, and a heat medium flow channel is provided in the baffle cavity. A heat medium inlet pipe and a heat medium outlet pipe are connected to the heat medium flow channel, and the heat medium inlet pipe and the heat medium outlet pipe extend out of the prepolymerization reactor. A portion of the edge of the heating baffle has a flow port for material flow between it and the inner wall of the prepolymerization reactor.

[0007] This design incorporates multiple heating baffles between the material inlet and outlet of the prepolymerization reactor. These baffles utilize internal heat transfer channels to facilitate heat transfer through the flowing heat medium. The material enters the reactor through the material inlet, then passes sequentially through the flow ports between each heating baffle and the inner wall of the reactor, before exiting through the material outlet. During this process, the material directly contacts the heating baffles, resulting in a large contact area and ensuring thorough and uniform heating with high overall heating efficiency. This allows the material to maintain a set temperature for reaction, facilitating the evaporation of light components and improving material quality.

[0008] Preferably, the heating partition includes: Two parallel partitions spaced apart on both sides; A sealing plate surrounds the edges of the two partitions and is sealed to the edges of the partitions, forming the partition cavity between the two partitions and the sealing plate; Several guide vanes are disposed in the partition cavity, dividing the partition cavity into heat medium flow channels. This facilitates the actual manufacturing of the heating partition and allows the heat medium flow channels to be evenly distributed throughout the heating partition, enabling heat transfer through the flowing heat medium and improving the utilization efficiency of the heat medium.

[0009] As a preferred embodiment, the heat medium flow channel includes a guide flow channel and a tortuous flow channel; The guide vane includes: Inclined guide vanes divide the partition cavity into a main cavity and a guide cavity. The guide cavity extends vertically and forms the guide channel. Several flat guide plates, arranged sequentially from bottom to top within the main cavity, divide the main cavity into the aforementioned tortuous flow channels. The lower end of the guide channel is connected to the bottom of the tortuous flow channels, the upper end of the guide channel is connected to the heat medium inlet pipe, and one end of the heat medium outlet pipe is connected to the top of the tortuous flow channels. In this design, the heat medium enters the guide channel through the heat medium inlet pipe, flows through the guide channel to the bottom of the tortuous flow channels, and then flows in an S-shape from bottom to top along the tortuous flow channels. This not only ensures that the heat medium flow channels are evenly distributed throughout the heating baffle, facilitating heat transfer through the flowing heat medium and improving heat medium utilization efficiency, but also prioritizes heating the material at the bottom, promoting thorough and uniform heating of the material.

[0010] Preferably, one side of the partition is inclined, and the inclined guide plate is parallel to and close to the inclined surface. The space between the inclined guide plate and the corresponding sealing plate on the inclined surface forms the guide cavity. The other side of the partition is curved, and the curvature of the curved surface is adapted to the prepolymerization reactor. The curved surface is close to or against the inner wall of the prepolymerization reactor. The bottom surface of the partition is flat. The space between the inclined surface of one side of the partition and the inner wall of the prepolymerization reactor forms a side flow port, and the space between the bottom surface of the partition and the inner wall of the prepolymerization reactor forms a bottom flow port. The side flow port and the bottom flow port together constitute the flow port. The material inside the prepolymerization reactor flows through the side flow port and the bottom flow port, which can slow down the flow speed of the material between the heating partitions, thereby increasing the contact time between the material and the heating partitions, and thus heating the material more fully and evenly.

[0011] Preferably, one side of the partition is inclined, and the other side is curved, with the curvature of the curved surface adapted to the prepolymerization reactor. This curved surface is close to or against the inner wall of the prepolymerization reactor. The bottom surface of the partition is flat. The space between the inclined surface of one side of the partition and the inner wall of the prepolymerization reactor forms a side flow port, and the space between the bottom surface of the partition and the inner wall of the prepolymerization reactor forms a bottom flow port. The side flow port and the bottom flow port together constitute the flow port. The material inside the prepolymerization reactor flows through the side flow port and the bottom flow port, which slows down the flow rate of the material between the heating partitions, thereby increasing the contact time between the material and the heating partitions, and ensuring sufficient and uniform heating of the material.

[0012] Preferably, the inclined surface of one of any two adjacent heating partitions is located on one side of the heating plate assembly, while the inclined surface of the other heating partition is located on the other side. This allows the side flow openings of one heating partition and the other heating partition to be distributed on opposite sides of the heating plate assembly. As the material passes through the side flow openings of each heating partition sequentially, the flow path of the material is effectively increased, allowing for a longer contact time between the material and the heating partitions, thus resulting in more thorough and uniform heating of the material.

[0013] Preferably, a plurality of stiffening columns are provided between the two partitions of the same heating partition, with each end of the stiffening column passing through and being welded to the partition. In this way, the structural strength of the heating partition can be improved by using stiffening columns.

[0014] Preferably, end caps extend from both sides of the sealing plate corresponding to the top surface of the heating partition; The prepolymerization reactor is provided with a head fixing block and a partition fixing block at the position corresponding to the heating partition. There are multiple partition fixing blocks, and each partition fixing block is provided with a limiting groove. The edge of the heating partition is located in the limiting groove. The end cap fixing block has a U-shaped cross-section, and the end cap is placed in the groove of the end cap fixing block. The end cap fixing block is also provided with a limiting cover. In this way, the position of the heating baffle can be fixed, and the fixing structure of the heating baffle and the prepolymerization reactor has a certain margin of movement, which can reduce the impact of materials on the heating baffle.

[0015] Preferably, the top surface of the heating baffle is provided with an upwardly extending baffle. The baffle is designed to prevent material from passing over the top of the heating baffle, allowing the material to pass slowly through the flow port and ensuring that the material is heated.

[0016] Preferably, the heating baffles are located below the stirring shaft inside the prepolymerization reactor, and the heating baffles are distributed sequentially along the axial direction of the stirring shaft. Several stirring discs are mounted on the stirring shaft, and at least one stirring disc is positioned between any two adjacent heating baffles. Under the action of the stirring shaft and the stirring discs, all the materials inside can continuously come into contact with the heating baffles, thereby achieving more thorough and uniform heating of the materials and realizing efficient heating.

[0017] Preferably, the heating plate assembly is located near the material inlet side. Placing the heating baffle on the material inlet side inside the prepolymerization reactor can effectively and promptly heat the material, keeping it at the set temperature for the reaction.

[0018] Preferably, the area of ​​the heating baffle is 1 / 4 to 1 / 2 of the cross-sectional area of ​​the prepolymerization reactor. Due to the large area of ​​the heating baffle, the contact area between the material and the heating baffle can be effectively increased, resulting in better overall heating efficiency.

[0019] The beneficial effects of this utility model are: First, the material can directly contact the heating baffle, and the contact area between the material and the heating baffle is large, so as to achieve full and uniform heating of the material and good overall heating efficiency, allowing the material to be maintained at the set temperature for reaction, so that the light components in the material evaporate, thereby improving the quality of the material.

[0020] Second, the internal heat medium flow channel of the heating baffle is tortuous, and the side flow port corresponding to one heating baffle and the side flow port corresponding to the other heating baffle are distributed on opposite sides of the heating plate group. This can effectively increase the flow path of the material and allow the material to contact the heating baffle for a longer time, thereby heating the material more fully and evenly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a heating partition structure for a prepolymerization reactor according to this utility model.

[0022] Figure 2This is a schematic diagram of the heating partition of a prepolymerization reactor according to this utility model.

[0023] Figure 3 for Figure 2 A partial sectional view of AA; Figure 4 for Figure 2 A partial sectional view of BB; Figure 5 for Figure 2 A partial sectional view of CC; Figure 6 for Figure 2 A partial sectional view of DD.

[0024] In the picture: Prepolymerization reactor 1, material inlet 1.1, material outlet 1.2; Heating baffle 2, baffle cavity 2.0, heat medium flow channel 2.1, tortuous flow channel 2.11, guide flow channel 2.12, heat medium inlet pipe 2.2, heat medium outlet pipe 2.3, guide plate 2.4, flat guide plate 2.41, inclined guide plate 2.42, inclined surface 2.5, baffle 2.6, sealing plate 2.7, end cap 2.71, stiffening column 2.8; Stirring shaft 3; Mixing pan 4; Flow port 5, side flow port 5.1, bottom flow port 5.2; Head fixing block 6; Partition fixing block 7; baffle 8; Limit cover 9. Detailed Implementation

[0025] Specific Implementation Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, a heating baffle structure for a prepolymerization reactor includes a heating plate assembly disposed within the prepolymerization reactor 1. The heating plate assembly is located between the material inlet 1.1 and the material outlet 1.2 of the prepolymerization reactor 1. The heating plate assembly includes a plurality of heating baffles 2 arranged sequentially at intervals.

[0026] The heating baffle 2 has a baffle cavity 2.0 inside. A heat medium flow channel 2.1 is provided within the baffle cavity 2.0. A heat medium inlet pipe 2.2 and a heat medium outlet pipe 2.3 are connected to the heat medium flow channel 2.1, and both extend out of the prepolymerization reactor 1. The heat medium is supplied from the outside and does not come into contact with the materials inside the prepolymerization reactor 1.

[0027] A portion of the edge of the heating baffle 2 has a flow port 5 for material flow between it and the inner wall of the prepolymerization reactor 1.

[0028] In this embodiment, multiple heating baffles 2 are installed between the material inlet 1.1 and the material outlet 1.2 of the prepolymerization reactor 1. The heating baffles 2 utilize the internal heat medium flow channel 2.1 to transfer heat through the flowing heat medium. The material in the prepolymerization reactor 1 enters through the material inlet 1.1, then passes through the flow port 5 between each heating baffle 2 and the inner wall of the prepolymerization reactor 1, and then flows out through the material outlet 1.2. During this process, the material is in direct contact with the heating baffles 2, and the contact area between the material and the heating baffles 2 is large, so as to achieve sufficient and uniform heating of the material and good overall heating efficiency, allowing the material to be maintained at the set temperature for reaction, so that the light components in the material evaporate, thereby improving the quality of the material.

[0029] Specific embodiment two, such as Figure 1 , Figure 2 , Figure 3 As shown, a heating baffle structure for a prepolymerization reactor includes a heating plate assembly disposed within the prepolymerization reactor 1. The heating plate assembly is located between the material inlet 1.1 and the material outlet 1.2 of the prepolymerization reactor 1. The heating plate assembly includes a plurality of heating baffles 2 arranged sequentially at intervals.

[0030] Each heating baffle 2 is spaced apart on one side of the material inlet 1.1 of the prepolymerization reactor 1; or each heating baffle 2 is spaced apart on one side of the material outlet 1.2 of the prepolymerization reactor 1; or each heating baffle 2 is distributed sequentially from the material inlet 1.1 to the material outlet 1.2; or each heating baffle 2 is spaced apart in the middle between the material inlet 1.1 and the material outlet 1.2 of the prepolymerization reactor 1. The specific arrangement of each heating baffle 2 can be selected according to the actual working conditions.

[0031] The heating baffle 2 has a baffle cavity 2.0 inside. A heat medium flow channel 2.1 is located within the baffle cavity 2.0. A heat medium inlet pipe 2.2 and a heat medium outlet pipe 2.3 are connected to the heat medium flow channel 2.1, and both extend out of the prepolymerization reactor 1. The heat medium is supplied from the outside and does not come into contact with the materials inside the prepolymerization reactor 1. Specifically, the heat medium enters the heat medium flow channel 2.1 through the heat medium inlet pipe 2.2 and exits through the heat medium outlet pipe 2.3.

[0032] A portion of the edge of the heating baffle 2 has a flow port 5 for material flow between it and the inner wall of the prepolymerization reactor 1.

[0033] In this embodiment, multiple heating baffles 2 are installed between the material inlet 1.1 and the material outlet 1.2 of the prepolymerization reactor 1. The heating baffles 2 utilize the internal heat medium flow channel 2.1 to transfer heat through the flowing heat medium. The material in the prepolymerization reactor 1 enters through the material inlet 1.1, then passes through the flow port 5 between each heating baffle 2 and the inner wall of the prepolymerization reactor 1, and then flows out through the material outlet 1.2. During this process, the material is in direct contact with the heating baffles 2, and the contact area between the material and the heating baffles 2 is large, so as to achieve sufficient and uniform heating of the material and good overall heating efficiency, allowing the material to be maintained at the set temperature for reaction, so that the light components in the material evaporate, thereby improving the quality of the material.

[0034] Specifically, such as Figure 1 , Figure 2 As shown, the heating baffles 2 are located below the stirring shaft 3 inside the prepolymerization reactor 1. The heating baffles 2 are distributed sequentially along the axial direction of the stirring shaft 3. Several stirring discs 4 are provided on the stirring shaft 3, and at least one stirring disc 4 is distributed between any two adjacent heating baffles 2. In this embodiment, one stirring disc 4 is distributed between any two adjacent heating baffles 2. Under the action of the stirring shaft 3 and the stirring discs 4, all the materials inside can continuously come into contact with the heating baffles 2, thereby heating the materials more thoroughly and uniformly, achieving efficient heating of the materials.

[0035] In this embodiment, the heating plate assembly is located near the material inlet 1.1. By placing the heating baffle 2 on the material inlet 1.1 side inside the prepolymerization reactor 1, the material can be effectively and promptly heated, allowing the material to react at the set temperature.

[0036] Furthermore, such as Figure 1 , Figure 2 As shown, the area of ​​the heating baffle 2 is 1 / 4 to 1 / 2 of the cross-sectional area of ​​the prepolymerization reactor 1. Due to the large area of ​​the heating baffle 2, the contact area between the material and the heating baffle 2 can be effectively increased, resulting in good overall heating efficiency.

[0037] Furthermore, such as Figure 2 , Figure 3As shown, the heating baffle 2 includes two baffles 2.6, a sealing plate 2.7, and several guide plates 2.4. The two baffles 2.6 are arranged parallel to each other at intervals. The sealing plate 2.7 surrounds the edges of the two baffles 2.6 and is sealed to the edges of the baffles 2.6. In this embodiment, the sealing plate 2.7 is welded around the edges of the two baffles 2.6. The two baffles 2.6 and the sealing plate 2.7 form the baffle cavity 2.0. Each guide plate 2.4 is disposed in the baffle cavity 2.0, dividing the baffle cavity 2.0 into the heat medium flow channels 2.1. This facilitates the actual manufacturing of the heating baffle 2 and allows the heat medium flow channels 2.1 to be evenly distributed in various parts of the heating baffle 2, so that heat transfer can be carried out through the flowing heat medium, thereby improving the utilization efficiency of the heat medium.

[0038] Furthermore, such as Figure 2 , Figure 3 As shown, one side of the partition 2.6 is a slope 2.5. The other side of the partition 2.6 is an arc surface, and the curvature of this arc surface is adapted to the prepolymerization reactor 1. This arc surface is close to or against the inner wall of the prepolymerization reactor 1. The slope and arc surface of the partition 2.6 are distributed on opposite sides of the partition 2.6. The bottom surface of the partition 2.6 is flat. The space between the slope 2.5 on one side of the partition 2.6 and the inner wall of the prepolymerization reactor 1 forms a side flow port 5.1. The space between the bottom surface of the partition 2.6 and the inner wall of the prepolymerization reactor 1 forms a guide flow channel 2.12.2. The side flow port 5.1 and the bottom flow port 5.2 together constitute the flow port 5. The material inside the prepolymerization reactor 1 flows through the side flow port 5.1 and the bottom flow port 5.2, which can slow down the flow speed of the material between the heating partitions 2, thereby increasing the contact time between the material and the heating partitions 2, so as to fully and uniformly heat the material.

[0039] Furthermore, such as Figure 2 , Figure 3As shown, the heat medium flow channel 2.1 includes a guide flow channel 2.12 and a tortuous flow channel 2.11. The guide plate 2.4 includes an inclined guide plate 2.42 and several flat guide plates 2.41. The inclined guide plates 2.42 are distributed at an angle. The inclined guide plates 2.42 divide the partition cavity 2.0 into a main cavity and a guide cavity. The guide cavity extends vertically at an angle and forms the guide flow channel 2.12. Each flat guide plate 2.41 is distributed parallel to the main cavity from bottom to top. Each flat guide plate 2.41 divides the main cavity into the tortuous flow channel 2.11. The tortuous flow channel 2.11 is S-shaped. The lower end of the guide flow channel 2.12 is connected to the bottom of the tortuous flow channel 2.11. The upper end of the guide flow channel 2.12 is connected to the heat medium inlet pipe 2.2. One end of the heat medium outlet pipe 2.3 is connected to the top of the tortuous flow channel 2.11. In this embodiment, the heat medium in the heat medium flow channel 2.1 enters the guide flow channel 2.12 through the heat medium inlet pipe 2.2, flows through the guide flow channel 2.12 to the bottom of the tortuous flow channel 2.11, and then flows in an S-shape from bottom to top along the tortuous flow channel 2.11. In this way, not only can the heat medium flow channel 2.1 be evenly distributed in all parts of the heating baffle 2, and heat transfer be carried out through the flowing heat medium to improve the utilization efficiency of the heat medium, but the heat medium also prioritizes heating the material at the bottom, which is conducive to fully and evenly heating the material. The reason why the heat medium prioritizes heating the material at the bottom is that the stirring shaft 3 of the prepolymerization reactor 1 is located in the center of the prepolymerization reactor 1. Relatively speaking, the material closer to the stirring shaft 3 has better uniformity. The material at the bottom of the prepolymerization reactor 1 has poorer uniformity than the material closer to the stirring shaft 3. Furthermore, the material flow port 5 is located at the bottom and side of the heating baffle 2, which reduces the contact time between the material at the bottom and side of the heating baffle 2 and the heating baffle 2. In summary, in order to ensure that the material at the bottom of the prepolymerization reactor 1 is heated more fully and uniformly, this embodiment prioritizes heating the material at the bottom with the heat medium.

[0040] In this embodiment, as Figure 2 , Figure 3 As shown, the inclined guide plate 2.42 is parallel to the inclined surface 2.5 on one side of the partition plate 2.6, and the inclined guide plate 2.42 is close to the inclined surface. The space between the inclined guide plate 2.42 and the sealing plate 2.7 corresponding to the inclined surface constitutes the guide cavity.

[0041] Furthermore, if the inclined surface 2.5 of one of any two adjacent heating partitions 2 is located on one side of the heating plate assembly, then the inclined surface 2.5 of the other heating partition 2 is located on the other side of the heating plate assembly. In this way, the side flow opening 5.1 corresponding to one of any two adjacent heating partitions 2 and the side flow opening 5.1 corresponding to the other heating partition 2 can be distributed on opposite sides of the heating plate assembly. This effectively increases the material's flow path (making the material flow path also S-shaped) as it passes through the side flow openings 5.1 corresponding to each heating partition 2, allowing for a longer contact time between the material and the heating partition 2, thus resulting in more thorough and uniform heating of the material.

[0042] Furthermore, such as Figure 2 , Figure 3 As shown, a plurality of stiffening columns 2.8 are provided between the two partitions 2.6 of the same heating partition 2. The two ends of the stiffening columns 2.8 pass through the partitions 2.6 respectively and are welded to the partitions 2.6. The specific positions of the stiffening columns 2.8 can be arranged according to actual needs. In this way, the structural strength of the heating partition 2 can be improved by using the stiffening columns 2.8.

[0043] Furthermore, such as Figure 2 , Figure 4 , Figure 5 As shown, the sealing plates 2.7 on the top surface of the heating partition 2 extend into the sealing heads 2.71 on both sides.

[0044] Inside the prepolymerization reactor 1, corresponding to the heating partition 2, are provided a head fixing block 6 and a partition fixing block 7. The head fixing block 6 and the partition fixing block 7 are fixed to the inner wall of the prepolymerization reactor 1. There are multiple partition fixing blocks 7, each arranged along the edge of the heating partition 2. Each partition fixing block 7 has a limiting groove, with the opening of the limiting groove facing the heating partition 2. The edge of the heating partition 2 is located within the limiting groove.

[0045] The head fixing block 6 corresponds one-to-one with the head 2.71. The head fixing block 6 has a U-shaped cross-section. The head 2.71 is placed in the groove of the head fixing block 6. The head fixing block 6 is also provided with a limiting cover 9. The limiting cover 9 is snapped onto the head fixing block 6 and covers the groove opening of the head fixing block 6. In this embodiment, the groove width of the head fixing block 6 is greater than that of the head 2.71, and the groove width of the limiting groove of the partition fixing block 7 is greater than that of the heating partition 2. This allows for the fixing of the heating partition 2 and provides a certain amount of flexibility in the fixing structure of the heating partition 2 and the prepolymerization reactor 1, thus mitigating the impact of materials on the heating partition 2.

[0046] Furthermore, such as Figure 2 , Figure 6As shown, the top surface of the heating partition 2 is provided with an upwardly extending baffle 8. The baffle 8 is to prevent material from passing over the top of the heating partition 2, so that the material passes slowly through the flow port 5, ensuring that the material is heated.

[0047] In this embodiment, several reinforcing ribs are also provided on both sides of the baffle 8.

[0048] The baffle 8 can cover the entire top surface of the heating baffle 2, or it can be arranged in a local part of the top surface of the heating baffle 2.

[0049] In this embodiment, the baffle 8 is arranged on the top surface of the heating baffle 2, near the inner wall of the prepolymerization reactor 1. This is because the farther the material is from the stirring shaft 3, the greater the centrifugal force, and the closer the material's wave crest is to the inner wall of the prepolymerization reactor 11. Therefore, the baffle 8 only needs to be positioned near the material's wave crest to achieve the desired blocking effect. Thus, this solution arranges the baffle 8 on the top surface of the heating baffle 2, near the inner wall of the prepolymerization reactor 1. This not only saves on shortening the baffle 8 and conserves material, but also effectively prevents material from passing over the heating baffle 2.

[0050] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A heating partition structure for a prepolymerization reactor, characterized in that, It includes a heating plate assembly located inside the prepolymerization reactor, between the material inlet and the material outlet of the prepolymerization reactor, and the heating plate assembly includes several heating baffles arranged sequentially at intervals. The heating baffle has a baffle cavity inside, and a heat medium flow channel is provided in the baffle cavity. A heat medium inlet pipe and a heat medium outlet pipe are connected to the heat medium flow channel, and the heat medium inlet pipe and the heat medium outlet pipe extend out of the prepolymerization reactor. A portion of the edge of the heating baffle has a flow port for material flow between it and the inner wall of the prepolymerization reactor. The heating baffle includes: Two parallel partitions spaced apart on both sides; A sealing plate surrounds the edges of the two partitions and is sealed to the edges of the partitions, forming the partition cavity between the two partitions and the sealing plate; Several guide vanes are disposed in the partition cavity to divide the partition cavity into the heat medium flow channels.

2. The heating partition structure of a prepolymerization reactor according to claim 1, characterized in that, The heat medium flow channel includes a guide flow channel and a tortuous flow channel; The guide vane includes: Inclined guide vanes divide the partition cavity into a main cavity and a guide cavity. The guide cavity extends vertically and forms the guide channel. Several flat guide plates, arranged sequentially from bottom to top within the main cavity, divide the main cavity into the aforementioned tortuous flow channels; the lower end of the guide flow channel is connected to the bottom of the tortuous flow channel, the upper end of the guide flow channel is connected to the heat medium inlet pipe, and one end of the heat medium outlet pipe is connected to the top of the tortuous flow channel.

3. The heating partition structure of a prepolymerization reactor according to claim 2, characterized in that, One side of the partition is an inclined surface, and the inclined guide plate is parallel to the inclined surface and close to the inclined surface. The space between the inclined guide plate and the sealing plate corresponding to the inclined surface forms the guide cavity. The other side of the partition is an arc surface, and the curvature of the arc surface is adapted to the prepolymerization reactor. The arc surface is close to or against the inner wall of the prepolymerization reactor. The bottom surface of the partition is a plane. The space between the inclined surface of one side of the partition and the inner wall of the prepolymerization reactor forms a side flow port, and the space between the bottom surface of the partition and the inner wall of the prepolymerization reactor forms a bottom flow port. The side flow port and the bottom flow port together constitute the flow port.

4. The heating partition structure of a prepolymerization reactor according to claim 1, characterized in that, One side of the partition is a sloping surface, and the other side of the partition is an arc surface. The curvature of the arc surface is adapted to the prepolymerization reactor. The arc surface is close to or close to the inner wall of the prepolymerization reactor. The bottom surface of the partition is a flat surface. The space between the sloping surface of one side of the partition and the inner wall of the prepolymerization reactor forms a side flow port. The space between the bottom surface of the partition and the inner wall of the prepolymerization reactor forms a bottom flow port. The side flow port and the bottom flow port together constitute the flow port.

5. A heating partition structure for a prepolymerization reactor according to claim 3 or 4, characterized in that, If the inclined surface of one of any two adjacent heating partitions is located on one side of the heating plate group, then the inclined surface of the other heating partition is located on the other side of the heating plate group.

6. A heating partition structure for a prepolymerization reactor according to any one of claims 1-4, characterized in that, Several stiffening columns are provided between the two partitions of the same heating partition. The two ends of the stiffening columns pass through the partitions respectively and are welded to the partitions.

7. A heating partition structure for a prepolymerization reactor according to any one of claims 1-4, characterized in that, End caps extend from both sides of the sealing plate corresponding to the top surface of the heating partition; The prepolymerization reactor is provided with a head fixing block and a partition fixing block at the position corresponding to the heating partition. There are multiple partition fixing blocks, and each partition fixing block is provided with a limiting groove. The edge of the heating partition is located in the limiting groove. The end cap fixing block has a U-shaped cross section, the end cap is placed in the groove of the end cap fixing block, and the end cap fixing block is also provided with a limiting cover.

8. A heating partition structure for a prepolymerization reactor according to any one of claims 1-4, characterized in that, The top surface of the heating baffle is provided with an upwardly extending baffle. The heating plate assembly is located near the material inlet side, and the area of ​​the heating baffle is 1 / 4 to 1 / 2 of the cross-sectional area of ​​the prepolymerization reactor.

9. A heating partition structure for a prepolymerization reactor according to any one of claims 1-4, characterized in that, The heating baffles are located below the stirring shaft inside the prepolymerization reactor, and each heating baffle is distributed sequentially along the axial direction of the stirring shaft. Several stirring discs are provided on the stirring shaft, and at least one stirring disc is distributed between any two adjacent heating baffles.

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