A paste resin reflux condenser flushing device

Abstract

The present disclosure relates to a paste resin reflux condenser flushing device, comprising a polymerization kettle and a liquid storage tank, the polymerization kettle and the liquid storage tank are communicated through a flushing pipeline, a flushing pump and a switch valve are arranged on the flushing pipeline, a flushing liquid inlet pipe is arranged on the liquid storage tank, and a heating assembly and a stirring assembly are arranged in the liquid storage tank. Through the above technical scheme, the paste resin reflux condenser flushing device can effectively flush the condenser, avoid the condenser tube being blocked by plasticizing material, and is beneficial to improving the utilization rate of the polymerization kettle reflux condenser and the quality of the paste resin product.

Description

Technical Field

[0001] This disclosure relates to the field of paste resin polymerization production technology, and more specifically, to a paste resin reflux condenser flushing device. Background Technology

[0002] The polymerization reactor is a key piece of equipment used in the production of paste resin. During the polymerization reaction of paste resin, a large amount of reaction heat is continuously released. In order to accurately control the reaction temperature, the top of the polymerization reactor is usually equipped with a reflux condenser, which achieves heat exchange through the circulation of the medium in the tube and removes the reaction heat in time.

[0003] However, due to the characteristics of the paste resin reaction system, a small amount of oligomers and unreacted monomers are generated during the reaction. These substances easily condense and accumulate on the inner wall of the tubes under temperature changes, gradually forming plastics. As production time progresses, plastics will continuously deposit in the condenser tubes, eventually causing blockage. Once blockage occurs, it will directly obstruct the flow of heat exchange medium in the tubes, significantly reducing the effective utilization rate of the heat exchange area. This prevents the reaction heat in the polymerization reactor from being dissipated in a timely manner, affecting product quality. At the same time, frequent blockage by plastics will force a shortening of the originally set reactor cleaning cycle, resulting in a reduction in the effective operating time of the polymerization reactor and a significant decrease in equipment utilization. Utility Model Content The purpose of this disclosure is to provide a rinsing device for a paste resin reflux condenser, which can effectively rinse the condenser, prevent the condenser tubes from being blocked by plastics, and improve the utilization rate of the polymerization reactor reflux condenser and the quality of the paste resin product.

[0004] To achieve the above objectives, this disclosure provides a rinsing device for a paste resin reflux condenser, comprising a polymerization reactor and a storage tank. The polymerization reactor and the storage tank are connected by a rinsing pipeline, which is equipped with a rinsing pump and a switching valve. The storage tank is provided with a rinsing liquid inlet pipe, and a heating component and a stirring component are provided inside the storage tank.

[0005] According to an exemplary embodiment of this disclosure, the flushing pipeline is provided with a return pipeline connected to the storage tank, the return pipeline is provided with a return regulating valve, and the flushing pipeline is provided with a pressure gauge. The return regulating valve is configured to automatically adjust the valve opening according to the pressure value measured by the pressure gauge, so as to keep the pressure in the flushing pipeline within a preset pressure range.

[0006] According to an exemplary embodiment of this disclosure, the preset pressure range is 1.3 MPa to 1.5 MPa.

[0007] According to an exemplary embodiment of this disclosure, the flushing pipeline includes a first part connecting the flushing pump and the storage tank, and a second part connecting the flushing pump and the polymerization reactor. The switching valve is installed in the first part, and one end of the return pipeline is connected to the storage tank, and the other end is connected to the second part.

[0008] According to an exemplary embodiment of this disclosure, the paste resin reflux condenser flushing device further includes a flow meter and a first automatic control valve mounted on the second part, both of which are located between the polymerization reactor and the other end of the reflux pipeline.

[0009] According to an exemplary embodiment of this disclosure, the stirring assembly includes a stirring rod and a stirring motor. The stirring motor is mounted on the top of the storage tank. One end of the stirring rod is connected to the stirring motor, and the other end of the stirring rod extends to the inner bottom of the storage tank and is provided with stirring blades.

[0010] According to an exemplary embodiment of this disclosure, the paste resin reflux condenser flushing device further includes a control system and a liquid level sensor. The liquid level sensor is installed on the liquid storage tank, and a second automatic control valve is provided on the flushing liquid inlet pipe. Both the second automatic control valve and the liquid level sensor are electrically connected to the control system.

[0011] According to an exemplary embodiment of this disclosure, the heating assembly is configured as a coil heat exchanger, and a temperature sensor for detecting the temperature of the flushing fluid is provided in the liquid storage tank. Both the temperature sensor and the coil heat exchanger are electrically connected to the control system.

[0012] Through the above technical solution, in the paste resin reflux condenser flushing device disclosed herein, a flushing pipeline connects the storage tank to the polymerization reactor, and a flushing pump provides power to make the flushing liquid flow inside the condenser tubes. This effectively washes away plastic deposits and other substances adhering to the inner walls of the tubes, preventing blockage. Furthermore, a heating element is installed in the storage tank to heat the flushing liquid. The high-temperature flushing liquid more effectively dissolves and softens the plastics inside the tubes, enhancing the flushing effect, reducing the number of reactor cleaning operations required due to blockage, extending the cleaning cycle, and improving the effective operating time and equipment utilization of the polymerization reactor. Simultaneously, a stirring component is installed to agitate the flushing liquid in the storage tank, ensuring uniform temperature and stable flushing effect. This maintains the unobstructed flow of the condenser tubes, ensuring timely removal of reaction heat from the polymerization reactor, allowing for more precise reaction temperature control, and ultimately improving product quality stability.

[0013] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the paste resin reflux condenser flushing device provided in the embodiments of this disclosure.

[0015] Explanation of reference numerals in the attached drawings: 1. Polymerization vessel; 2. Storage tank; 21. Liquid level sensor; 3. Flushing pipeline; 31. Pressure gauge; 32. First part; 33. Second part; 34. Flow meter; 35. First automatic control valve; 4. Flushing pump; 5. Switch valve; 6. Flushing liquid inlet pipe; 61. Second automatic control valve; 7. Heating assembly; 71. Steam trap; 8. Stirring assembly; 81. Stirring rod; 82. Stirring motor; 83. Stirring blade; 9. Return pipeline; 91. Return regulating valve. Detailed Implementation

[0016] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0017] In this disclosure, unless otherwise stated, the terms "first," "second," etc., used herein are for distinguishing one element from another and do not have sequential or material significance. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0018] According to exemplary embodiments of this disclosure, reference is made to Figure 1 As shown, a rinsing device for a paste resin reflux condenser is provided, including a polymerization reactor 1 and a storage tank 2. The polymerization reactor 1 and the storage tank 2 are connected by a rinsing pipeline 3. A rinsing pump 4 and a switching valve 5 are provided on the rinsing pipeline 3. A rinsing liquid inlet pipe 6 is provided on the storage tank 2, and a heating component 7 and a stirring component 8 are provided inside the storage tank 2.

[0019] Through the above technical solution, in the paste resin reflux condenser flushing device disclosed herein, the storage tank 2 is connected to the polymerization reactor 1 by setting up a flushing pipeline 3, and the flushing pump 4 provides power to make the flushing liquid flow in the condenser tubes. This can flush away the plastics and other deposits attached to the inner wall of the tubes, preventing tube blockage. On this basis, a heating component 7 is set in the storage tank 2 to heat the flushing liquid. The high-temperature flushing liquid can more effectively dissolve and soften the plastics in the tubes, enhance the flushing effect, reduce the number of times the reactor needs to be cleaned due to blockage, extend the cleaning cycle, and improve the effective operating time and equipment utilization rate of the polymerization reactor 1. At the same time, a stirring component 8 is set up to stir the flushing liquid in the storage tank 2, so that the flushing liquid temperature is uniform, ensuring the stability of the flushing effect, thereby keeping the condenser tubes unobstructed, ensuring that the reaction heat in the polymerization reactor 1 can be discharged in time, making the reaction temperature control more precise, and thus improving the stability of product quality.

[0020] In this disclosure, the flushing fluid can be deionized water, and the flushing fluid inlet pipe 6 is installed on the storage tank 2 to replenish the flushing fluid in the storage tank 2; the switch valve 5 can be set as a manual valve to control the opening and closing of the flushing pipeline 3, and can open or close the flushing process as needed.

[0021] According to exemplary embodiments of this disclosure, referring to Figure 1 As shown, the flushing pipeline 3 is equipped with a return pipeline 9 connected to the storage tank 2. The return pipeline 9 is equipped with a return regulating valve 91, and the flushing pipeline 3 is equipped with a pressure gauge 31. The return regulating valve 91 is configured to automatically adjust its opening based on the pressure value measured by the pressure gauge 31, so that the pressure in the flushing pipeline 3 is maintained within a preset pressure range. In other words, there is a linkage between the return regulating valve 91 and the pressure gauge 31. Specifically, when the pressure in the flushing pipeline 3 exceeds the preset pressure range, the return regulating valve 91 automatically increases its opening, allowing more flushing fluid to return to the storage tank 2 through the return pipeline 9, thereby reducing the pressure in the flushing pipeline 3. When the pressure in the flushing pipeline 3 is lower than the preset pressure range, the return regulating valve 91 automatically decreases its opening, reducing the amount of flushing fluid returning to the storage tank 2, thereby increasing the pressure in the flushing pipeline 3. Through this automatic adjustment mechanism, the pressure in the flushing pipeline 3 is always maintained within the preset pressure range.

[0022] The preset pressure range can be 1.3MPa to 1.5MPa. By controlling the pressure in the flushing pipeline 3, the flushing fluid can maintain sufficient impact force to effectively remove plastic deposits in the tubes.

[0023] According to exemplary embodiments of this disclosure, referring to Figure 1As shown, the flushing pipeline 3 includes a first part 32 connecting the flushing pump 4 and the storage tank 2, and a second part 33 connecting the flushing pump 4 and the polymerization reactor 1. A switching valve 5 is installed in the first part 32. One end of the return pipeline 9 is connected to the storage tank 2, and the other end is connected to the second part 33. In this technical solution, the switching valve 5 is installed in the first part 32 of the flushing pipeline 3, i.e., the inlet end of the flushing pump 4, which can more effectively cut off the supply of flushing fluid. One end of the return pipeline 9 is connected to the storage tank 2, and the other end is connected to the second part 33 of the flushing pipeline, forming a loop from the second part 33 back to the storage tank 2. This connection method allows some of the flushing fluid, after being pressurized by the flushing pump 4, to flow directly back to the storage tank 2 through the return pipeline 9 without passing through the condenser of the polymerization reactor 1, thereby achieving pressure regulation within the flushing pipeline.

[0024] According to exemplary embodiments of this disclosure, referring to Figure 1 As shown, the paste resin reflux condenser flushing device may further include a flow meter 34 and a first automatic control valve 35 installed on the second part 33. Both the flow meter 34 and the first automatic control valve 35 are located between the polymerization reactor 1 and the other end of the reflux pipeline 9. In the above technical solution, the flow meter 34 is used to measure the flow rate of the flushing liquid entering the reflux condenser of the polymerization reactor 1; the first automatic control valve 35 is used to regulate the flow rate of the flushing liquid entering the reflux condenser of the polymerization reactor 1. Specifically, the flow meter 34 transmits the measured flow signal to the control system, and the control system automatically adjusts the opening of the first automatic control valve 35 according to a preset flow range (e.g., 35 m³ / h to 60 m³ / h) to keep the flushing liquid flow rate within the preset flow range. Thus, through the cooperation of the flow meter 34 and the first automatic control valve 35, the flow rate of the flushing liquid entering the condenser can be precisely controlled, ensuring sufficient flow to flush the deposits in the tubes without causing unnecessary energy waste due to excessive flow.

[0025] According to exemplary embodiments of this disclosure, referring to Figure 1 As shown, the stirring assembly 8 may include a stirring rod 81 and a stirring motor 82. The stirring motor 82 is mounted on the top of the storage tank 2. One end of the stirring rod 81 is connected to the stirring motor 82, and the other end of the stirring rod 81 extends to the inner bottom of the storage tank 2 and is equipped with stirring blades 83. In the above technical solution, the stirring motor 82 serves as the power source for the stirring assembly 8. When the stirring motor 82 is working, it drives the stirring rod 81 and the stirring blades 83 to rotate. During the rotation, the surrounding flushing liquid is driven to form a vortex, thereby achieving full stirring of the flushing liquid in the storage tank 2. This allows the flushing liquid in the storage tank 2 to continuously circulate and fully contact the heating assembly 7, accelerating the heat transfer speed and improving the heating efficiency.

[0026] According to an exemplary embodiment of this disclosure, the paste resin reflux condenser flushing device may further include a control system and a liquid level sensor 21, see reference. Figure 1 As shown, a liquid level sensor 21 is installed on the storage tank 2, and a second automatic control valve 61 is provided on the flushing fluid inlet pipe 6. Both the second automatic control valve 61 and the liquid level sensor 21 are electrically connected to the control system. The liquid level sensor 21 is used to monitor the liquid level of the flushing fluid in the storage tank 2 in real time, and the second automatic control valve 61 is used to control the flow rate of the flushing fluid entering the storage tank 2. Specifically, the liquid level sensor 21 transmits the measured liquid level signal to the control system in real time. The control system compares the actual liquid level with a preset liquid level range. When the actual liquid level is lower than the lower limit of the preset liquid level range, the control system issues a command to open the second automatic control valve 61 to replenish the flushing fluid into the storage tank 2. When the actual liquid level reaches the upper limit of the liquid level range, the control system controls the second automatic control valve 61 to close, stopping the replenishment of flushing fluid. This maintains the liquid level in the storage tank 2 within the preset liquid level range, avoiding waste and environmental pollution caused by flushing fluid overflow.

[0027] According to an exemplary embodiment of this disclosure, the heating component 7 can be configured as a coil heat exchanger, and a temperature sensor (not shown in the figure) is provided inside the liquid storage tank 2. Both the temperature sensor and the coil heat exchanger are electrically connected to the control system. In the above technical solution, the coil heat exchanger is typically made of a metal tube bent into a coil shape and installed inside the liquid storage tank 2. Heat exchange is achieved between the heat medium (such as steam, hot water, etc.) introduced into the tube and the flushing liquid in the liquid storage tank 2.

[0028] When the heat medium flowing into the pipe is steam, refer to Figure 1 As shown, a steam trap 71 can be installed at the bottom of the liquid storage tank 2. The steam trap 71 is connected to the outlet end of the coil heat exchanger to automatically drain the steam condensate in the coil and ensure heat exchange efficiency.

[0029] In this disclosure, a temperature sensor is used to monitor the temperature of the flushing fluid in real time. The temperature sensor transmits the measured flushing fluid temperature signal to the control system. The control system compares the actual temperature with a preset temperature range. When the actual temperature is lower than the lower limit of the preset temperature range, the control system controls the coil heat exchanger to increase the supply of heat medium and increase the heating intensity. When the actual temperature is higher than the upper limit of the preset temperature range, the control system controls the coil heat exchanger to reduce or stop the supply of heat medium and reduce the heating intensity, thereby keeping the temperature of the flushing fluid within the preset temperature range (e.g., 50°C to 70°C).

[0030] Reference Figure 1 As shown, the working process of this paste resin reflux condenser flushing device is as follows: When it is necessary to flush the reflux condenser of the polymerization reactor 1, an appropriate amount of flushing liquid is first injected into the storage tank 2 through the flushing liquid inlet pipe 6. The liquid level sensor 21 monitors the liquid level in the storage tank 2 in real time and transmits the signal to the control system. When the liquid level reaches the preset value, the control system controls the second automatic control valve 61 to close and stop the liquid inlet. Then, the heating component 7 and the stirring component 8 are activated. The heating component 7 heats the rinsing liquid, and the temperature sensor monitors the temperature of the rinsing liquid in real time. The control system controls the heating intensity of the heating component 7 according to the temperature signal to keep the temperature of the rinsing liquid within the preset temperature range. At the same time, the stirring motor 82 drives the stirring rod 81 and the stirring blade 83 to rotate, stirring the rinsing liquid to make the temperature of the rinsing liquid uniform. Then, the switch valve 5 is opened and the flushing pump 4 is started. Under the action of the flushing pump 4, the flushing liquid in the storage tank 2 enters the reflux condenser of the polymerization reactor 1 through the first part 32 and the second part 33 of the flushing pipeline 3 to flush the condenser tubes. During the flushing process, pressure gauge 31 monitors the pressure in flushing pipeline 3 in real time. When the pressure exceeds the preset pressure range (e.g., 1.3MPa to 1.5MPa), the reflux regulating valve 91 automatically increases its opening, allowing some flushing fluid to flow back to the storage tank 2 through the reflux pipeline 9, thereby reducing the pipeline pressure. When the pressure is lower than the preset pressure range, the reflux regulating valve 91 automatically decreases its opening, increasing the pipeline pressure and keeping the pressure within the preset pressure range. Meanwhile, the flow meter 34 monitors the flow rate of the flushing fluid entering the condenser in real time and transmits the signal to the control system. When the flow rate of the flushing fluid received by the control system reaches the preset flow rate value, it controls the first automatic control valve 35 to close and shuts down the flushing pump 4 to cut off the supply of flushing fluid. The remaining flushing fluid in the flushing pipeline 3 returns to the storage tank 2 through the return pipeline 9 connected to the second part 33, forming a closed flushing loop and completing one flushing cycle. During the entire flushing process, the control system monitors and automatically adjusts the liquid level, temperature, pressure and flow rate in real time to ensure that the flushing effect reaches the best.

[0031] A comparison is made between traditional manual tube cleaning and cleaning using the paste resin reflux condenser flushing device disclosed herein, as detailed in Table 1: Table 1:

[0032] As can be seen from Table 1, the flushing cycle of the paste resin reflux condenser flushing device is longer than that of traditional manual tube cleaning. This indicates that the use of the paste resin reflux condenser flushing device disclosed herein results in a lower frequency of condenser blockage in the polymerization reactor 1 and a reduction in flushing time, thereby improving flushing efficiency.

[0033] In summary, the paste resin reflux condenser flushing device provided in this disclosure can effectively remove plastic deposits in the condenser tubes, ensure heat exchange efficiency, extend the cleaning cycle, and improve equipment utilization.

[0034] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0035] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0036] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A paste-like resin reflux condenser flushing device, characterized in that, It includes a polymerization reactor (1) and a storage tank (2), the polymerization reactor (1) and the storage tank (2) are connected by a flushing pipeline (3), the flushing pipeline (3) is equipped with a flushing pump (4) and a switch valve (5), the storage tank (2) is equipped with a flushing liquid inlet pipe (6), and the storage tank (2) is equipped with a heating component (7) and a stirring component (8).

2. The paste resin reflux condenser flushing device according to claim 1, characterized in that, The flushing pipeline (3) is provided with a return pipeline (9) connected to the liquid storage tank (2). The return pipeline (9) is provided with a return regulating valve (91). The flushing pipeline (3) is provided with a pressure gauge (31). The return regulating valve (91) is configured to automatically adjust the valve opening according to the pressure value measured by the pressure gauge (31) so that the pressure in the flushing pipeline (3) is kept within a preset pressure range.

3. The paste resin reflux condenser flushing device according to claim 2, characterized in that, The preset pressure range is 1.3MPa to 1.5MPa.

4. The paste resin reflux condenser flushing device according to claim 2, characterized in that, The flushing pipeline (3) includes a first part (32) connecting the flushing pump (4) and the storage tank (2), and a second part (33) connecting the flushing pump (4) and the polymerization reactor (1). The switching valve (5) is installed in the first part (32). One end of the return pipeline (9) is connected to the storage tank (2), and the other end is connected to the second part (33).

5. The paste resin reflux condenser flushing device according to claim 4, characterized in that, The paste resin reflux condenser flushing device also includes a flow meter (34) and a first automatic control valve (35) installed on the second part (33), the flow meter (34) and the first automatic control valve (35) being located between the polymerization reactor (1) and the other end of the reflux pipeline (9).

6. The paste resin reflux condenser flushing device according to any one of claims 1 to 5, characterized in that, The stirring assembly (8) includes a stirring rod (81) and a stirring motor (82). The stirring motor (82) is installed on the top of the storage tank (2). One end of the stirring rod (81) is connected to the stirring motor (82) in a transmission manner. The other end of the stirring rod (81) extends to the inner bottom of the storage tank (2) and is provided with stirring blades (83).

7. The paste resin reflux condenser flushing device according to claim 6, characterized in that, The paste resin reflux condenser flushing device also includes a control system and a liquid level sensor (21). The liquid level sensor (21) is installed on the liquid storage tank (2). A second automatic control valve (61) is provided on the flushing liquid inlet pipe (6). The second automatic control valve (61) and the liquid level sensor (21) are both electrically connected to the control system.

8. The paste resin reflux condenser flushing device according to claim 7, characterized in that, The heating component (7) is constructed as a coil heat exchanger. The liquid storage tank (2) is equipped with a temperature sensor for detecting the temperature of the flushing liquid. Both the temperature sensor and the coil heat exchanger are electrically connected to the control system.

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