Bismaleimide preparation cooling assembly

Abstract

The utility model discloses a bismaleimide preparation cooling assembly which comprises a reaction kettle, an output pipe is fixedly communicated with the outer wall of the reaction kettle, a cooling pipe is fixedly communicated with the outer wall of the output pipe, two semicircular pipes are sleeved on the outer wall of the cooling pipe, and semicircular butt joint blocks are fixedly connected with the outer walls of the two ends of the two semicircular pipes. The outer walls of the two semicircular butt joint blocks are sleeved with the same clamping hoop, and a plurality of vertical pipes are fixedly communicated with the interior of the cooling pipe. Through inner and outer double-path cooling water circulation (the synergistic effect of the vertical pipes and the semicircular pipes), the heat transfer area is obviously increased, a reactant is ensured to be quickly and uniformly cooled in the discharging process, and the problem of local overheating or insufficient cooling is avoided; by adopting the split type semicircular pipe design, the device can be quickly disassembled through the hoop, and can be cleaned or overhauled without entering the reaction kettle, so that the maintenance difficulty is greatly reduced, and the downtime is greatly shortened; the cooling process and discharging are performed synchronously, so that the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of bismaleimide preparation equipment, and in particular to a cooling component for bismaleimide preparation. Background Technology

[0002] The preparation of bismaleimide typically involves chemical reactions under high-temperature conditions, such as prepolymerization or curing reactions at temperatures between 100°C and 150°C. However, excessively high temperatures can lead to side reactions, affecting the performance of the final product. Therefore, cooling is necessary during the reaction to maintain a suitable temperature range, ensuring the smooth progress of the reaction and the formation of the target product. For example, in some preparation methods, after the reaction in the reactor is complete, cooling is usually achieved using external jacket cooling, internal coil cooling, or external circulating heat exchangers.

[0003] In existing technologies, if the built-in cooling device (such as a coil) becomes blocked or leaks, the machine must be shut down and the reactor must be accessed for maintenance. This is not only cumbersome but may also affect the continuity of production. External jacket cooling may result in a significant temperature gradient of the material inside the reactor due to the limited heat transfer area, which may increase the risk of local overheating or insufficient cooling. Therefore, we propose a bismaleimide preparation cooling component to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a bismaleimide-based cooling component.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cooling assembly for bismaleimide preparation includes a reaction vessel. An output pipe is fixedly connected to the outer wall of the reaction vessel. A cooling pipe is fixedly connected to the outer wall of the output pipe. Two semi-circular tubes are fitted onto the outer wall of the cooling pipe. Semi-circular buttresses are fixedly connected to the outer walls of both ends of the two semi-circular tubes. A common clamp is fitted onto the outer walls of the two semi-circular buttresses. Multiple vertical tubes are fixedly connected to the interior of the cooling pipe. Connecting pipes are uniformly embedded inside the two semi-circular tubes. The multiple connecting pipes are divided into two groups and fixedly connected to horizontal tubes. A cooling assembly is provided on the outer wall of the cooling pipe.

[0007] Preferably, the cooling assembly includes a first inlet pipe and a first outlet pipe. One end of the first inlet pipe and the first outlet pipe are respectively fixedly connected to the outer walls of two horizontal pipes. One of the semi-circular pipes is fixedly connected to the outer wall of a second inlet pipe, and the other semi-circular pipe is fixedly connected to the outer wall of a second outlet pipe. One end of both the first inlet pipe and the second inlet pipe is fixedly connected to a water pump. The cooling assembly is used to cool the material discharged from the reactor.

[0008] Preferably, a sealing ring is fixedly connected inside the connector to increase the sealing between the connector and the connecting pipe.

[0009] Preferably, one end of each of the multiple connecting pipes is located inside a multiple mating joint.

[0010] Preferably, flanges are fixedly connected to the outer walls of both ends of the cooling pipe, and the cooling pipe is connected to the pipeline through the flanges.

[0011] Preferably, the top of the reactor is fixedly connected to a feed pipe, and the bottom of the reactor is fixedly connected to three legs, which support the reactor.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution significantly increases the heat transfer area through internal and external dual-path cooling water circulation (vertical pipe and semi-circular pipe working together), ensuring rapid and uniform cooling of reactants during discharge and avoiding local overheating or insufficient cooling. The split semi-circular pipe design allows for quick disassembly with clamps, enabling cleaning or maintenance without entering the reactor, greatly reducing maintenance difficulty and downtime. The cooling process is synchronized with the discharge, improving production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a cooling component prepared from bismaleimide according to the present invention.

[0016] Figure 2 This is a schematic cross-sectional view of a cooling component made of bismaleimide according to the present invention.

[0017] Figure 3 This is a partial cross-sectional structural diagram of a cooling component prepared from bismaleimide according to the present invention.

[0018] Figure 4 This invention proposes a method for preparing cooling components using bismaleimide. Figure 3 A magnified structural diagram of part A in the diagram.

[0019] In the diagram: 1. Reactor; 2. Output pipe; 3. Cooling pipe; 4. Semicircular pipe; 5. Semicircular connecting block; 6. Clamp; 7. Vertical pipe; 8. Connecting pipe; 9. Connecting joint; 10. Horizontal pipe; 11. First water inlet pipe; 12. First water outlet pipe; 13. Flange; 14. Second water inlet pipe; 15. Second water outlet pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Depend on Figures 1-4 As shown, a cooling assembly for the preparation of bismaleimide is disclosed, comprising a reaction vessel 1, an output pipe 2 fixedly connected to the outer wall of the reaction vessel 1, a cooling pipe 3 fixedly connected to the outer wall of the output pipe 2, one end of the cooling pipe 3 being connected to the next process equipment, two semi-circular pipes 4 being sleeved on the outer wall of the cooling pipe 3, and semi-circular connecting blocks 5 being fixedly connected to the outer walls of both ends of the two semi-circular pipes 4, and the same clamp 6 being sleeved on the outer walls of the two semi-circular connecting blocks 5, the two clamps 6 merging the two semi-circular pipes 4 into a single sleeve, and a rubber sealing gasket being added to the contact surface between the two semi-circular pipes 4.

[0023] The cooling pipe 3 has multiple vertical pipes 7 that are fixedly connected inside. The cooling pipe 3 has multiple connectors 9 that are evenly fixedly connected on its outer wall. The connectors 9 have sealing rings fixedly connected inside. One end of multiple connecting pipes 8 is located inside the multiple connectors 9. The multiple connectors 9 make one end of the multiple connecting pipes 8 connected to the multiple vertical pipes 7.

[0024] Two semi-circular tubes 4 are uniformly embedded with connecting tubes 8 inside. Multiple connecting tubes 8 are divided into two groups and fixedly connected with horizontal tubes 10. Flanges 13 are fixedly connected to the outer walls of both ends of the cooling tube 3. A feed pipe is fixedly connected to the top of the reactor 1. Three legs are fixedly connected to the bottom of the reactor 1.

[0025] The outer wall of the cooling pipe 3 is provided with a cooling assembly, which includes a first inlet pipe 11 and a first outlet pipe 12. The cooling water in the first inlet pipe 11 enters into multiple vertical pipes 7 and comes into contact with the reactants in the cooling pipe 3 for cooling. One end of the first inlet pipe 11 and the first outlet pipe 12 are respectively fixedly connected to the outer wall of two horizontal pipes 10. The outer wall of one semi-circular pipe 4 is fixedly connected to a second inlet pipe 14, and the outer wall of the other semi-circular pipe 4 is fixedly connected to a second outlet pipe 15. The cooling water in the second outlet pipe 15 enters into the cavity formed by the two semi-circular pipes 4 to cool the cooling pipe 3. One end of the first inlet pipe 11 and the second inlet pipe 14 are both fixedly connected to a water pump.

[0026] Working principle: During operation, when the reactants in reactor 1 need cooling, they are discharged through output pipe 2. During the discharge process, two water pumps operate, respectively delivering cooling water to the first inlet pipe 11 and the second inlet pipe 14. The cooling water in the first inlet pipe 11 enters the connected horizontal pipe 10, and then enters multiple connectors 9 through multiple connecting pipes 8. The cooling water then enters multiple vertical pipes 7 through the multiple connectors 9. The multiple vertical pipes 7 are located inside the cooling pipe 3, achieving a good cooling effect. At the same time, the second inlet pipe... The cooling water inside 14 enters the cavity formed by the two semicircular pipes 4 through the connected semicircular pipe 4. The cooling water comes into contact with the outer wall of the cooling pipe 3 and carries some heat. After heat transfer, the cooling water is discharged from the first outlet pipe 12 and the second outlet pipe 15 respectively. When maintaining the cooling component, the position fixation between the two semicircular pipes 4 can be released by the two clamps 6, and the two semicircular pipes 4 can be separated. At the same time, the two ends of the multiple vertical pipes 7 are exposed, and the inner walls of the semicircular pipes 4 and the multiple vertical pipes 7 can be cleaned, which facilitates maintenance.

[0027] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling assembly for the preparation of bismaleimide, comprising a reaction vessel (1), characterized in that, The outer wall of the reactor (1) is fixedly connected to an output pipe (2), and the outer wall of the output pipe (2) is fixedly connected to a cooling pipe (3). The outer wall of the cooling pipe (3) is fitted with two semi-circular pipes (4). The outer walls of both ends of the two semi-circular pipes (4) are fixedly connected to semi-circular connecting blocks (5). The outer walls of the two semi-circular connecting blocks (5) are fitted with the same clamp (6). The interior of the cooling pipe (3) is fixedly connected to multiple vertical pipes (7). The outer wall of the cooling pipe (3) is uniformly fixedly connected to a butt joint (9). The interior of the two semi-circular pipes (4) is uniformly fixedly embedded with connecting pipes (8). The multiple connecting pipes (8) are divided into two groups and fixedly connected to horizontal pipes (10). The outer wall of the cooling pipe (3) is provided with a cooling assembly.

2. The bismaleimide-based cooling assembly according to claim 1, characterized in that, The cooling assembly includes a first inlet pipe (11) and a first outlet pipe (12). One end of the first inlet pipe (11) and the first outlet pipe (12) are respectively fixedly connected to the outer walls of two horizontal pipes (10). One of the semicircular pipes (4) is fixedly connected to the outer wall of a second inlet pipe (14), and the other semicircular pipe (4) is fixedly connected to the outer wall of a second outlet pipe (15). One end of the first inlet pipe (11) and the second inlet pipe (14) are both fixedly connected to a water pump.

3. The bismaleimide-based cooling assembly according to claim 1, characterized in that, The internal connection of the connector (9) is fixed with a sealing ring.

4. The bismaleimide-based cooling assembly according to claim 1, characterized in that, One end of each of the multiple connecting pipes (8) is located inside the multiple connectors (9).

5. A cooling assembly prepared from bismaleimide according to claim 1, characterized in that, Flanges (13) are fixedly connected to the outer walls of both ends of the cooling pipe (3).

6. The cooling assembly prepared from bismaleimide according to claim 1, characterized in that, The top of the reactor (1) is fixedly connected to a feed pipe, and the bottom of the reactor (1) is fixedly connected to three legs.

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