Efficient polymerization equipment for carbon fibers
By introducing a combined stirring structure of impeller, propeller blade and guide tube into the carbon fiber polymerization equipment, combined with a spray device and a multi-layer coil heat exchange system, the problems of uneven temperature and insufficient stirring are solved, product quality and production efficiency are improved, and equipment maintenance is simplified.
Patent Information
- Application Number
- CN202422828031.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In the current carbon fiber production process, uneven temperature and insufficient stirring in the polymerization reactor lead to substandard changes in raw material viscosity, affecting product quality and production capacity.
A high-efficiency carbon fiber polymerization device was designed, which adopts a combined stirring structure of impeller, propeller blade and guide tube, combined with spray device and multi-layer coil heat exchange system to ensure uniform stirring and temperature control.
It achieves thorough mixing of raw materials and quickly reaches the target viscosity, improving product quality. Furthermore, the design of the detachable end cap and spray device simplifies the equipment maintenance and cleaning process.
Smart Images
Figure CN223530396U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of carbon fiber production equipment, specifically relating to a high-efficiency polymerization device for carbon fiber. Background Technology
[0002] Carbon fiber is a novel high-strength, high-modulus fiber material containing over 95% carbon. It is composed of organic fibers, such as graphite microcrystals in blades, strung together along the axial direction. Carbon fiber is lighter than aluminum but stronger than steel, and possesses corrosion resistance and high modulus. It occupies an important position in my country's industries and is an indispensable material for aerospace engineering worldwide.
[0003] In the carbon fiber industry, polymerization reactors are typically vertical, with internal and external heat exchange structures (coils, guide tubes, outer jackets, etc.) for heat transfer from the hot water system. As the stirring rate increases, the organic solution inside the reactor is constantly flowing through anchor rods, belt agitators, and axial flow mixers. This can easily lead to localized overheating and uneven temperature distribution, preventing the materials from being fully mixed and thus failing to achieve the required viscosity variation range. Consequently, the quality of the raw solution is substandard, affecting carbon fiber production capacity and product quality. Utility Model Content
[0004] The present invention aims to solve the technical problems existing in the prior art and provide a high-efficiency polymerization device for carbon fibers.
[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a high-efficiency polymerization equipment for carbon fiber, comprising a polymerization reactor, characterized in that: an upper end flange is provided on the top of the polymerization reactor, a feeding channel is provided on one side of the top of the upper end flange, a spraying device is inserted into the other side of the top of the upper end flange, the output end of the spraying device extends into the interior of the polymerization reactor, a reducer is provided at the middle position of the top of the upper end flange, a motor is provided on the top of the reducer, the output end of the motor is connected to the reducer, and a stirring device is provided on the output end of the reducer. The stirring shaft extends through the upper end flange into the interior of the polymerization reactor. The surface of the stirring shaft is respectively equipped with a propeller impeller and a propeller blade, with the propeller impeller positioned above the propeller blade. A guide tube is fitted onto the outer surface of the stirring shaft. Multiple mounting plates are provided on the side wall of the guide tube. Multiple coils are arranged in the space between the guide tube and the inner wall of the polymerization reactor. The coils surround the outer wall of the guide tube and extend through the multiple mounting plates. The guide tube is interconnected with the polymerization reactor through the multiple mounting plates. A lower end flange is provided at the bottom of the polymerization reactor, and a discharge channel is inserted into the bottom of the lower end flange.
[0006] Preferably, the bottom of the propulsion impeller is conical and the top is cylindrical.
[0007] Preferably, the spraying device includes an inlet pipe, a tee pipe, spray pipes, and nozzles. The inlet pipe is inserted into the upper end flange, with its top located at the top of the upper end flange and its bottom extending into the interior of the upper end flange. The tee pipe is inserted into the bottom of the inlet pipe, and the spray pipes are inserted into both ends of the tee pipe and extend to both sides along the side wall of the polymerization reactor. The nozzles are located below the two spray pipes.
[0008] Preferably, each coil is provided with a first top liquid inlet pipe at the top and a first bottom liquid outlet pipe at the bottom, with one end of the first top liquid inlet pipe and the first bottom liquid outlet pipe extending through the polymerization reactor body to the outside of the polymerization reactor body.
[0009] Preferably, a second top liquid inlet pipe is inserted into one side of the top of the guide tube, and a second bottom liquid outlet pipe is inserted into one side of the bottom of the guide tube. One end of both the second top liquid inlet pipe and the second bottom liquid outlet pipe extends through the polymerization reactor body to the outside of the polymerization reactor body.
[0010] The beneficial effects of this utility model are:
[0011] 1. Under the interaction of the guide tube, impeller, and propeller blades, the polymer liquid inside the guide tube moves downward. After reaching the bottom of the lower head, it moves upward along the inner coil heat exchange channel and the reactor wall under the action of external force. For agitators with small blade diameter and slow speed, in order to ensure that the fluid along the stirring tank wall can also flow well and form an up-and-down flow, the raw materials inside can be stirred more thoroughly. This allows the raw material viscosity required for actual production to be reached more quickly, resulting in better product quality.
[0012] 2. The top and bottom of the polymerization reactor are equipped with upper and lower end flanges, respectively. These flanges are detachable to ensure easy disassembly in case of emergencies or maintenance, such as gelation. The coils are made with openings in the cylinder wall, which further facilitates the disassembly of the upper and lower end flanges.
[0013] 3. By setting up a spray device inside, the spray pipes of the spray device extend along both sides of the inside of the polymerization reactor, and multiple nozzles are set at the bottom to replenish dimethyl sulfoxide solution in a timely manner during the reaction process, while also providing convenience for washing the reactor. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is a cross-sectional structural schematic diagram of this utility model;
[0016] Figure 3 This is a three-dimensional structural diagram of the internal structure of this utility model.
[0017] In the diagram: 11. Polymerization vessel; 12. Upper end flange; 13. Lower end flange; 14. Feed channel; 15. Reducer; 16. Motor; 17. Stirring shaft; 18. Propeller impeller; 19. Propeller blade; 110. Discharge channel; 2. Spraying device; 21. Liquid inlet pipe; 22. T-connector; 23. Spray pipe; 24. Nozzle; 31. Coil; 32. First top liquid inlet pipe; 33. First bottom liquid outlet pipe; 41. Guide tube; 42. Second top liquid inlet pipe; 43. Second bottom liquid outlet pipe; 44. Mounting plate. Detailed Implementation
[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0019] Example: A high-efficiency polymerization device for carbon fibers, such as... Figures 1-3 As shown, the reactor includes a polymerization vessel 11, which operates at a pressure of 0.05 MPa(G) and a temperature of 80°C. An upper end flange 12 is mounted on the top of the polymerization vessel 11. A feed channel 14 is located on one side of the top of the upper end flange 12, and a spray device 2 is inserted into the other side of the top of the upper end flange 12. The output end of the spray device 2 extends into the interior of the polymerization vessel 11. A reducer 15 is located in the middle of the top of the upper end flange 12, and a motor 16 is mounted on the top of the reducer 15. The output end of the motor 16 is connected to the reducer 15. A stirring shaft 17 is mounted on the output end of the reducer 15, extending through the upper end flange 12 into the interior of the polymerization vessel 11. A propulsion impeller 18 and a spiral are respectively mounted on the surface of the stirring shaft 17. The impeller 19 and the propeller impeller 18 are conical at the bottom and cylindrical at the top. The propeller impeller 18 is located above the propeller 19. The propeller impeller 18 has a diameter of 0.5D and a height of 0.06D. The angle between the propeller impeller 18 and the stirring shaft 17 is 75-80°. A guide tube 41 is sleeved on the outer surface of the stirring shaft 17. Multiple mounting plates 44 are provided on the side wall of the guide tube 41. Multiple coils 31 are provided in the space between the guide tube 41 and the inner wall of the polymerization vessel 11. The coils 31 are arranged around the outer wall of the guide tube 41 and pass through the multiple mounting plates 44. The guide tube 41 is connected to the polymerization vessel 11 through the multiple mounting plates 44. A lower end flange 13 is provided at the bottom of the polymerization vessel 11. A discharge channel 110 is inserted into the bottom of the lower end flange 13.
[0020] The spraying device 2 includes an inlet pipe 21, a three-way pipe 22, a spray pipe 23, and a nozzle 24. The inlet pipe 21 is inserted into the upper end flange 12, with the top of the inlet pipe 21 located at the top of the upper end flange 12 and the bottom of the inlet pipe 21 extending into the interior of the upper end flange 12. The three-way pipe 22 is inserted into the bottom of the inlet pipe 21. The spray pipe 23 is inserted into both ends of the three-way pipe 22 and extends to both sides along the side wall of the polymerization reactor 11. The nozzle 24 is located below the two spray pipes 23.
[0021] Each coil 31 has a first top inlet pipe 32 at its top and a first bottom outlet pipe 33 at its bottom. One end of each of the first top inlet pipe 32 and the first bottom outlet pipe 33 extends through the polymerization reactor 11 to the outside of the reactor 11. The equipment uses three layers of coils 31, which can effectively exchange heat in the polymerization reactor, allowing for sufficient mass and heat exchange, increasing heat exchange capacity, preventing explosive polymerization, and effectively reducing gel formation. The outermost coils 31 each have 4 to 8 supports arranged in the 0°–360° direction on the inner wall of the equipment, while the middle coils 31 each have 4 to 8 supports arranged in the 0°–360° direction. The supports are located on the outermost coil 31, and the inner coil 31 is provided with 4 to 8 supports in the 0° to 360° direction on the guide tube 41. The guide tube 41 is provided with 4 to 8 supports in the 0° to 360° direction on the upper and lower sides of the equipment. The use of three layers of coils 31 can effectively exchange heat in the polymerization reactor, allowing for sufficient mass and heat exchange, increasing heat exchange capacity, preventing explosive polymerization, and effectively reducing gel formation. At the same time, each group of coils 31 is provided with a first top liquid inlet pipe 32 at the top and a corresponding first bottom liquid outlet pipe 33 at the bottom, which can quickly adjust the internal mass and heat exchange, making the liquid flow rate more efficient.
[0022] A second top liquid inlet pipe 42 is inserted into one side of the top of the guide tube 41, and a second bottom liquid outlet pipe 43 is inserted into one side of the bottom of the guide tube 41. One end of the second top liquid inlet pipe 42 and the second bottom liquid outlet pipe 43 both penetrate through the polymerization vessel body 11 and extend to the outside of the polymerization vessel body 11. By respectively setting the second top liquid inlet pipe 42 and the second bottom liquid outlet pipe 43, they are used to better replace the heat exchange liquid inside the guide tube 41, so that the efficiency of liquid inlet and liquid outlet is better.
[0023] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.
Claims
1. A high-efficiency polymerization device for carbon fiber, comprising a polymerization reactor (11), characterized in that: The top of the polymerization reactor (11) is provided with an upper end flange (12). A feed channel (14) is provided on one side of the top of the upper end flange (12). A spray device (2) is inserted into the other side of the top of the upper end flange (12). The output end of the spray device (2) extends into the interior of the polymerization reactor (11). A reducer (15) is provided in the middle of the top of the upper end flange (12). A motor (16) is provided on the top of the reducer (15). The output end of the motor (16) is connected to the reducer (15). A stirring shaft (17) is provided on the output end of the reducer (15). The stirring shaft (17) extends through the upper end flange (12) into the interior of the polymerization reactor (11). The surface of the stirring shaft (17) The apparatus is provided with a propulsion impeller (18) and a propeller blade (19), with the propulsion impeller (18) located above the propeller blade (19). A guide tube (41) is fitted onto the outer surface of the stirring shaft (17). Multiple mounting plates (44) are provided on the side wall of the guide tube (41). Multiple coils (31) are provided in the space between the guide tube (41) and the inner wall of the polymerization reactor (11). The coils (31) are arranged around the outer wall of the guide tube (41) and pass through the multiple mounting plates (44). The guide tube (41) is connected to the polymerization reactor (11) through the multiple mounting plates (44). A lower end flange (13) is provided at the bottom of the polymerization reactor (11), and a discharge channel (110) is inserted into the bottom of the lower end flange (13).
2. The high-efficiency polymerization equipment for carbon fiber according to claim 1, characterized in that: The bottom of the propulsion impeller (18) is conical and the top is cylindrical.
3. The high-efficiency polymerization equipment for carbon fiber according to claim 1, characterized in that: The spraying device (2) includes an inlet pipe (21), a three-way pipe (22), a spray pipe (23), and a nozzle (24). The inlet pipe (21) is inserted into the upper end flange (12), with the top of the inlet pipe (21) located at the top of the upper end flange (12) and the bottom of the inlet pipe (21) extending into the interior of the upper end flange (12). The three-way pipe (22) is inserted into the bottom of the inlet pipe (21). The spray pipe (23) is inserted into both ends of the three-way pipe (22) and extends to both sides along the side wall of the polymerization reactor (11). The nozzle (24) is located below the two spray pipes (23).
4. The high-efficiency polymerization equipment for carbon fiber according to claim 1, characterized in that: Each coil (31) is provided with a first top liquid inlet pipe (32) at the top and a first bottom liquid outlet pipe (33) at the bottom of each coil (31). One end of the first top liquid inlet pipe (32) and the first bottom liquid outlet pipe (33) both penetrate the polymerization reactor (11) and extend to the outside of the polymerization reactor (11).
5. The high-efficiency polymerization equipment for carbon fiber according to claim 1, characterized in that: A second top liquid inlet pipe (42) is inserted into one side of the top of the guide tube (41), and a second bottom liquid outlet pipe (43) is inserted into one side of the bottom of the guide tube (41). One end of the second top liquid inlet pipe (42) and the second bottom liquid outlet pipe (43) both penetrate the polymerization reactor body (11) and extend to the outside of the polymerization reactor body (11).