Polycarboxylic acid alkali water agent reaction kettle temperature control equipment

Abstract

The utility model relates to a kind of polycarboxylic alkali water agent reaction kettle temperature control equipment, belong to alkali water agent processing technical field. Mainly including the kettle body of double-shell structure, flow guide cylinder, helical flow guide plate and flow guide piece, stirring mechanism, arc heat-conducting plate and heat preservation cover. Jacket cavity and interlayer cavity are equipped in kettle body, are enlarged heat transfer area by spiral flow guide structure, accurate temperature control is realized in combination with temperature sensor and controller, stirring mechanism is driven by motor to improve material mixing effect and heat exchange efficiency, arc heat-conducting plate enhances heat transfer, heat preservation cover reduces heat loss. The utility model can effectively improve the problem that the heat transfer area of traditional reaction kettle is limited and heat distribution is uneven, improve temperature control performance and production efficiency, can meet the strict requirement of polycarboxylic alkali water agent production to product performance.

Description

Technical Field

[0001] This utility model belongs to the field of alkaline water agent processing technology, specifically relating to a temperature control device for a polycarboxylic acid alkaline water agent reactor. Background Technology

[0002] In the field of chemical production, reaction vessels are important equipment and are widely used in the preparation of chemical products such as polycarboxylic acid alkaline water agents. Their temperature control performance directly affects the quality of the products and production efficiency.

[0003] However, traditional reactors often use a single heat source or coil for heating. This structure suffers from limited heat transfer area and uneven heat distribution, easily leading to localized excessively high or low temperatures within the reactor. Uneven temperature distribution can cause abnormal product viscosity or gelation, affecting the final product quality. Therefore, a temperature control device capable of achieving uniform heat transfer and precise temperature control is needed to meet the stringent requirements for process stability and product performance in the production of polycarboxylate alkali solutions. Utility Model Content

[0004] To overcome the problems of limited heat transfer area and uneven heat distribution caused by traditional reactors using a single heat source or coil heating method, which affect the final product quality, this utility model provides a temperature control device for a polycarboxylate alkaline agent reactor. By combining a double-layer shell structure with an internal guide tube, and setting a spiral guide structure in the jacket cavity and interlayer cavity, the heat transfer area is effectively expanded, allowing heat to cover the internal area of ​​the reactor more evenly. The internal temperature of the reactor is monitored in real time using a temperature sensor, and combined with the synergistic effect of the stirring mechanism, the uniformity of heat distribution is further improved. This solves the problem of local temperature anomalies caused by the limited heat transfer area and uneven heat distribution of traditional reactors, significantly improving production efficiency and product quality.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A temperature control device for a polycarboxylate alkaline agent reaction vessel mainly includes a vessel body, support legs, a guide tube, a guide plate, a spiral guide vane, a controller, an inlet pipe, an outlet pipe, and a stirring mechanism. Multiple support legs are installed at the bottom of the vessel body. The vessel body has a double-shell structure, with a jacketed cavity formed between the inner and outer shells. A spiral guide plate is installed inside the jacketed cavity, integrally connected to the inner wall of the jacketed cavity to form a spiral guide channel. An inlet pipe communicating with the jacketed cavity is installed at the top of the outer shell of the vessel body, and a three-way valve is installed on the inlet pipe. The controller is fixedly installed... On the outer wall of the vessel, a temperature sensor is embedded in the inner wall and electrically connected to the controller. At the bottom of the vessel, there is a double-layered flow guide tube that protrudes inward, forming a sandwich cavity between the inner and outer layers of the flow guide tube. The bottom end of the sandwich cavity is connected to the jacket cavity. The inner wall of the sandwich cavity is provided with a spiral flow guide vane, which is integrally connected to the inner wall of the sandwich cavity to form a spiral flow guide channel. At the top of the inner wall of the flow guide tube, there is a liquid outlet pipe that communicates with the sandwich cavity. The bottom end of the liquid outlet pipe passes through the bottom of the vessel and extends to the outside. A feeding port is opened at the top of the vessel, and a discharge pipe with a discharge valve is provided at the bottom. The discharge pipe is connected to the inside of the vessel. A stirring mechanism is installed inside the vessel.

[0006] The stirring mechanism includes a motor, a stirring shaft, a stirring frame, and stirring blades. The top end of the stirring shaft passes through the top of the vessel body and is connected to the vessel body through a bearing seat. The bottom end extends to the top of the guide tube and is connected to the guide tube through another bearing seat. The motor is installed at the center of the top of the vessel body and is electrically connected to the controller. The output shaft of the motor is connected to the stirring shaft for transmission. A ring-shaped frame structure stirring frame is installed at the bottom end of the stirring shaft. The stirring frame is sleeved outside the guide tube and extends to the bottom of the vessel body. Spiral stirring blades are provided on the connecting rod of the stirring frame.

[0007] Both the outer wall of the guide tube and the inner wall of the vessel are provided with arc-shaped heat-conducting plates whose rotation direction is consistent with that of the stirring blades. The arc-shaped heat-conducting plates are welded to the inner wall of the vessel and the outer wall of the guide tube, with an inclination angle ranging from 30° to 60°.

[0008] The vessel body is wrapped with a heat insulation cover, which is fixed to the outer wall of the vessel body by bolts. The heat insulation cover is made of multi-layer composite material, with an inner layer of high-temperature resistant heat insulation material and an outer layer of metal protective layer, with heat insulation material filling the space between the two layers.

[0009] The beneficial effects of this utility model are:

[0010] This invention combines a double-layer shell structure with an internal guide tube, and sets up a spiral guide structure in the jacket cavity and interlayer cavity, which effectively expands the heat transfer area, allowing heat to cover the internal area of ​​the reactor more evenly. The temperature sensor monitors the internal temperature of the reactor in real time, and combined with the synergistic effect of the stirring mechanism, it further improves the uniformity of heat distribution. This solves the problem of local temperature abnormalities caused by the limited heat transfer area and uneven heat distribution in traditional reactors, and significantly improves production efficiency and product quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a 3D schematic diagram of the mixing mechanism in its installation state. Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0012] Figure 4 This is a schematic diagram of the three-dimensional structure of the stirring mechanism. Figure 5 This is a cross-sectional view of the internal structure of this utility model.

[0013] The attached diagram is labeled as follows: 1. Kettle body; 2. Support leg; 3. Flow guide tube; 4. Flow guide plate; 5. Spiral flow guide vane; 6. Controller; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Stirring mechanism; 10. Jacket cavity; 11. Insulation cover; 12. Temperature sensor; 13. Jacket cavity; 14. Feed port; 15. Arc-shaped heat conduction plate; 16. Discharge pipe; 17. Motor; 18. Stirring shaft; 19. Stirring frame; 20. Stirring blade. Detailed Implementation

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0015] This utility model discloses a temperature control device for a polycarboxylate alkaline agent reactor. The device mainly includes a reactor body 1, support legs 2, a guide tube 3, a guide plate 4, a spiral guide vane 5, a controller 6, an inlet pipe 7, an outlet pipe 8, and a stirring mechanism 9. Figure 2As shown, the vessel body 1 has a double-shell structure, with a jacket cavity 10 formed between the inner shell and the outer shell. A spiral guide plate 4 is installed inside the jacket cavity 10, and the guide plate 4 is integrally connected to the inner wall of the jacket cavity 10, thereby forming a spiral guide channel inside the jacket cavity 10. This allows the heating medium to flow along the spiral path in the jacket cavity 10, increasing the heat transfer area and improving the uniformity of heat distribution. Multiple support legs 2 are installed at the bottom of the vessel body 1 to stably support the entire vessel body 1. A feeding port 14 is opened at the top of the vessel body 1, and a discharge pipe 16 with a discharge valve is provided at the bottom. The discharge pipe 16 is connected to the inside of the vessel body 1 to facilitate the addition and discharge of materials. The vessel body 1 is wrapped with a heat insulation cover 11, which is fixed to the outer wall of the vessel body 1 by bolts. The heat insulation cover 11 is made of multi-layer composite material, with an inner layer of high-temperature resistant heat insulation material and an outer layer of metal protective layer. The space between the two layers is filled with heat insulation material to reduce heat loss and ensure the stability of the internal temperature of the reactor. Even under long-term operation or fluctuations in the external ambient temperature, it can maintain constant temperature control performance.

[0016] The bottom of the vessel body 1 is provided with a double-layered flow guide tube 3 that protrudes inward. The internal structure of the flow guide tube 3 is as follows: Figure 3 As shown, a sandwich cavity 13 is formed between the inner and outer layers of the guide tube 3. The bottom end of the sandwich cavity 13 is connected to the jacket cavity 10, allowing the heating medium to flow from the jacket cavity 10 into the sandwich cavity 13. A spiral guide vane 5 is provided on the inner wall of the sandwich cavity 13, and the spiral guide vane 5 is integrally connected to the inner wall of the sandwich cavity 13 to form another spiral guide channel. A liquid outlet pipe 8 connected to the sandwich cavity 13 is installed at the top of the inner wall of the guide tube 3. The bottom end of the liquid outlet pipe 8 penetrates the bottom of the vessel body 1 and extends to the outside to discharge the heating medium. An arc-shaped heat-conducting plate 15 with the same rotation direction as the stirring blade is provided on both the outer wall of the guide tube 3 and the inner wall of the vessel body 1. The arc-shaped heat-conducting plate 15 is welded to the inner wall of the vessel body 1 and the outer wall of the guide tube 3, with an inclination angle ranging from 30° to 60°, so that heat can be evenly transferred to the material along the surface of the heat-conducting plate, avoiding local overheating or underheating.

[0017] A stirring mechanism 9 is installed inside the vessel body 1. The stirring mechanism 9 includes a motor 17, a stirring shaft 18, a stirring frame 19, and stirring blades 20. The top end of the stirring shaft 18 passes through the top of the vessel body 1 and is connected to the vessel body 1 via a bearing seat. The bottom end extends to the top of the guide tube 3 and is connected to the guide tube 3 via another bearing seat. The motor 17 is installed at the center of the top of the vessel body 1 and is electrically connected to the controller 6. The output shaft of the motor 17 is drively connected to the stirring shaft 18 to drive its rotation. A ring-shaped frame stirring frame 19 is installed at the bottom of the stirring shaft 18. The stirring frame 19 is fitted around the outside of the guide tube 3 and extends to the bottom of the vessel body 1. Spiral stirring blades 20 are installed on the connecting rod of the stirring frame 19, allowing the material to rise along the spiral direction during stirring, thus achieving thorough mixing. During operation, the motor 17 drives the stirring shaft 18 to rotate, which in turn drives the stirring frame 19 and stirring blades 20 to stir the material, causing the material to circulate within the vessel body 1, further improving the uniformity of material mixing and heat exchange efficiency.

[0018] The controller 6 is fixedly installed on the outer wall of the vessel body 1. The temperature sensor 12 is embedded in the inner wall of the vessel body 1 and electrically connected to the controller 6. The temperature sensor 12 monitors the internal temperature of the vessel body 1 in real time and transmits the signal to the controller 6. The controller 6 adjusts the opening of the three-way valve or the flow rate of the heating medium according to preset parameters to ensure the accuracy of temperature control. A three-way valve is installed on the liquid inlet pipe 7. The liquid inlet pipe 7 is located at the top of the outer shell of the vessel body 1 and communicates with the jacket cavity 10. It is used to switch the flow direction or flow rate of the heating medium. After the heating medium enters the jacket cavity 10 through the liquid inlet pipe 7, it flows along the spiral channel formed by the spiral guide plate 4. Then it flows through another spiral channel formed by the spiral guide plate 5 in the jacket cavity 13 and finally is discharged through the liquid outlet pipe 8. The design of the double-layer spiral guide channel significantly expands the heat transfer area, so that the heat can evenly cover the internal area of ​​the reactor and avoid the phenomenon of local temperature abnormalities.

[0019] During operation, the material to be processed is first added into the vessel body 1 through the feeding port 14. Then, the motor 17 is started, driving the stirring shaft 18 to rotate, which in turn drives the stirring frame 19 and stirring blades 20 to stir the material. Simultaneously, the heating medium is injected into the jacket cavity 10 through the liquid inlet pipe 7. The heating medium flows along the spiral channel formed by the spiral guide plate 4, then enters the jacket cavity 13 and flows through another spiral channel formed by the spiral guide vane 5, and finally is discharged through the liquid outlet pipe 8. During this process, the temperature sensor 12 monitors the internal temperature of the vessel body 1 in real time and transmits the signal to the controller 6. The controller 6 adjusts the opening of the three-way valve or the flow rate of the heating medium according to preset parameters to ensure the accuracy of temperature control. The operation of the stirring mechanism 9 causes the material to circulate inside the vessel body 1, further improving the uniformity of material mixing and heat exchange efficiency. The design of the arc-shaped heat conduction plate 15 enhances the heat transfer efficiency, while the heat insulation cover 11 effectively reduces heat loss and ensures the stability of the internal temperature of the reactor. This invention significantly expands the heat transfer area by incorporating a double-layered flow guide tube inside the double-shell reactor body, combined with a spiral flow guide plate and spiral flow guide vanes to form a spiral flow guide channel structure. This allows heat to be more evenly distributed throughout the reactor's interior, preventing localized overheating or underheating. Furthermore, a temperature sensor monitors the reactor's internal temperature in real time, enabling precise temperature control and preventing abnormal product viscosity or gelation. Simultaneously, the stirring mechanism ensures thorough mixing, further enhancing material mixing uniformity and heat exchange efficiency, significantly improving production efficiency and product quality.

[0020] Work process:

[0021] In actual chemical production, chemical raw materials are first added to the reactor body 1 through the feed port 14. Then, the operator sets the target temperature using the controller 6 and starts the system, allowing the heating medium to enter the jacket cavity 10 through the inlet pipe 7 and flow along the spiral guide channel formed by the spiral guide plate 4. The spiral channel design increases the flow path of the heating medium within the jacket cavity 10, thereby increasing the heat transfer area. Since the spiral guide plate 4 is integrally connected to the inner wall of the jacket cavity 10, the heating medium can distribute heat evenly during flow, avoiding localized overheating or undercooling. Simultaneously, the heat within the jacket cavity 10 is transferred to the material inside the reactor body 1 through the arc-shaped heat-conducting plate 15. The arc-shaped heat-conducting plate 15 is arranged at an angle of 30° to 60°, further improving the uniformity of heat distribution. When the heating medium flows from the jacket cavity 10 into the jacket cavity 13, it flows along another spiral channel formed by the spiral guide vane 5. The design of the jacket cavity 13 not only increases the heat transfer path, but also further enhances the uniform distribution of heat through the double-layer structure of the guide tube 3. The flow path of the heating medium in the jacket cavity 13 complements that of the jacket cavity 10, ensuring that the heat can cover the entire internal area of ​​the reactor. Finally, the heating medium is discharged through the liquid outlet pipe 8, completing one cycle.

[0022] While the heating medium flows, the motor 17 drives the stirring shaft 18 to rotate. The stirring shaft 18 drives the stirring frame 19 and the stirring blades 20 to stir the material. The spiral design of the stirring blades 20 causes the material to rise in a spiral direction inside the vessel 1, thus forming a circulating flow. This not only promotes thorough mixing of the material but also accelerates the transfer of heat within the material, further improving heat exchange efficiency. Through the coordinated operation of the stirring mechanism 9 and the flow of the heating medium, efficient heat distribution and temperature control are achieved. Throughout the process, the temperature sensor 12 monitors the internal temperature of the vessel 1 in real time and transmits the signal to the controller 6. The controller 6 adjusts the opening of the three-way valve or the flow rate of the heating medium according to preset parameters to ensure accurate temperature control. For example, when the temperature sensor 12 detects that the internal temperature of the vessel 1 is lower than the set value, the controller 6 increases the opening of the three-way valve to increase the flow rate of the heating medium; conversely, it reduces the flow rate, ensuring that the internal temperature of the reactor remains within the target range.

[0023] As can be seen from the above steps, this utility model achieves efficient heat transfer and uniform distribution through the synergistic effect of the double-layer shell structure, double-layer guide cylinder, spiral guide channel, arc-shaped heat conduction plate and heat insulation cover. It not only solves the problems of limited heat transfer area and uneven heat distribution in traditional reaction vessels, but also significantly improves the material mixing effect and temperature control accuracy, meeting the strict requirements of modern chemical production for efficiency and stability.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A temperature control device for a polycarboxylate alkaline agent reaction vessel, characterized in that: The polycarboxylate alkaline water agent reaction vessel temperature control device includes a vessel body (1), support legs (2), a guide tube (3), a guide plate (4), a spiral guide vane (5), a controller (6), an inlet pipe (7), an outlet pipe (8), and a stirring mechanism (9). The bottom of the vessel body (1) is equipped with multiple support legs (2). The vessel body (1) has a double-shell structure, with a jacket cavity (10) formed between the inner shell and the outer shell. A spiral guide plate (4) is provided in the jacket cavity (10). The guide plate (4) is integrally connected to the inner wall of the jacket cavity (10) to form a spiral guide channel. An inlet pipe (7) communicating with the jacket cavity (10) is installed at the top of the outer shell of the vessel body (1). A three-way valve is installed on the inlet pipe (7). The controller (6) is fixedly installed on the outer wall of the vessel body (1). A temperature sensor (12) is embedded in the vessel body. The inner wall of the vessel (1) is electrically connected to the controller (6). The bottom of the vessel (1) is provided with a double-layer structure guide tube (3) that protrudes into it. A sandwich cavity (13) is formed between the inner and outer layers of the guide tube (3). The bottom end of the sandwich cavity (13) is connected to the jacket cavity (10). The inner wall of the sandwich cavity (13) is provided with a spiral guide plate (5). The spiral guide plate (5) is integrally connected with the inner wall of the sandwich cavity (13) to form a spiral guide channel. The top of the inner wall of the guide tube (3) is equipped with a liquid outlet pipe (8) that is connected to the sandwich cavity (13). The bottom end of the liquid outlet pipe (8) penetrates the bottom of the vessel (1) and extends to the outside. The top of the vessel (1) is provided with a feeding port (14). The bottom is provided with a discharge pipe (16) with a discharge valve. The discharge pipe (16) is connected to the inside of the vessel (1). The inside of the vessel (1) is equipped with a stirring mechanism (9).

2. The temperature control device for a polycarboxylate alkali agent reaction vessel as described in claim 1, characterized in that: The stirring mechanism (9) includes a motor (17), a stirring shaft (18), a stirring frame (19), and stirring blades (20). The top end of the stirring shaft (18) passes through the top of the vessel body (1) and is connected to the vessel body (1) through a bearing seat. The bottom end extends to the top of the guide tube (3) and is connected to the guide tube (3) through another bearing seat. The motor (17) is installed at the center of the top of the vessel body (1) and is electrically connected to the controller (6). The output shaft of the motor (17) is connected to the stirring shaft (18) for transmission. The bottom end of the stirring shaft (18) is equipped with a ring frame structure stirring frame (19). The stirring frame (19) is sleeved on the outside of the guide tube (3) and extends to the bottom of the vessel body (1). The connecting rod of the stirring frame (19) is provided with spiral stirring blades (20).

3. The temperature control device for a polycarboxylic acid alkaline agent reaction vessel as described in claim 2, characterized in that: The outer wall of the guide tube (3) and the inner wall of the vessel body (1) are both provided with arc-shaped heat-conducting plates (15) whose rotation direction is consistent with that of the stirring blade (20). The arc-shaped heat-conducting plates (15) are welded to the inner wall of the vessel body (1) and the outer wall of the guide tube (3), with an inclination angle ranging from 30° to 60°.

4. A temperature control device for a polycarboxylate alkali agent reaction vessel as described in any one of claims 1 to 3, characterized in that: The vessel body (1) is wrapped with a heat insulation cover (11). The heat insulation cover (11) is fixed to the outer wall of the vessel body (1) by bolts. The heat insulation cover (11) is made of multi-layer composite material. The inner layer is a high-temperature resistant heat insulation material, the outer layer is a metal protective layer, and the space between the two layers is filled with heat insulation material.

Images