Polymerization vessel capable of cleaning the inner wall polymer

Abstract

The present application relates to the field of reaction kettle, disclose a kind of polymerization kettle capable of cleaning inner wall polymer, including kettle body (4) and cleaning assembly, the top of kettle body (4) is provided with manhole, cleaning assembly includes the connecting rod (3) of being provided with water supply channel inside, the outlet end of connecting rod (3) is connected to the spray head (1), spray disc (2) is arranged at the side of connecting rod (3), the disc surface of spray disc (2) is parallel to the central axis of connecting rod (3), spray disc (2) is provided with multiple spray ports arranged in circumferential interval and can rotate around the central axis relative to connecting rod (3), cleaning assembly can enter kettle body (4) to clean the inner wall of kettle body (4).By the above technical scheme, spray head and spray disc cooperate, and the spray disc can be rotated to spray cleaning water to a larger angular range, to realize the cleaning of the inner wall of polymerization kettle, improve the comprehensiveness of cleaning, improve the cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of reaction vessels, and more specifically to a polymerization vessel capable of cleaning polymers from its inner wall. Background Technology

[0002] The increasing development of the field of polymer polymerization has led to higher requirements for the cleanliness of polymerization reactors. As the place where polymerization reactions take place, the efficient and orderly polymerization reaction plays an important role in ensuring production safety and polymer quality.

[0003] When a polymerization reactor undergoes its first polymerization reaction, there is no need to worry about polymer adhering to the inner wall. However, after the reactor has been running for a long time and then shut down, polymer adhesion will occur, requiring cleaning of the inner wall. Since polymer adhesion is difficult to completely eliminate, it can only be addressed through periodic cleaning of the inner wall. Existing cleaning methods mainly include manual cleaning, chemical cleaning, physical cleaning, and a combination of both. Manual cleaning is labor-intensive, has poor cleaning results, is harmful to operators, and can damage the inner wall. Chemical cleaning requires wastewater treatment, making the process cumbersome and environmentally unfriendly. Physical cleaning uses high-pressure water jets to flush and peel off the adhering substances from the inner wall of the polymerization reactor; its strong impact force achieves good cleaning results.

[0004] Chinese Patent CN 111957448 A discloses a nozzle for a high-pressure washer with adjustable spray angle. It includes a right-angle adapter fixed to the front end of the gun barrel of the high-pressure washer. One end of the right-angle adapter has a cylindrical protrusion with a water outlet. The other end of the right-angle adapter has a water inlet communicating with the water outlet. A connecting rod connects to the water inlet. A nozzle portion is fitted onto the front end of the cylindrical protrusion. A transition water groove is formed on the inner wall of the nozzle portion, and a spray chamber is formed on the inner wall of the transition water groove. An externally open spray hole is formed on the side wall of the spray chamber. Multiple through holes connecting the transition water groove and the water outlet are formed on the front end of the cylindrical protrusion. The right-angle adapter is equipped with an adjustment mechanism for adjusting the nozzle angle. This patent allows for changing the spray direction of the nozzle and can stably fix it at that angle, meeting the needs of various working conditions and improving the practicality of the washer. However, when cleaning the polymerization reactor, the nozzle requires frequent changes in the spray angle, which is not conducive to worker operation and improving work efficiency. In contrast, a high-pressure nozzle that can rotate freely 360° can achieve efficient cleaning.

[0005] Chinese patent CN 101704935 B discloses a process and apparatus for cleaning a polymerization reactor. It adds a solvent preheating tank to the entire polymerization apparatus to preheat the solvent to the set cleaning temperature, saving heating time in the reactor. Secondly, it recombines the cleaning process, employing a staggered, separate cleaning method for the first reactor (prepolymerization) and the second reactor (polymerization), reducing cleaning time. Furthermore, during the polymerization process in the second reactor, the cooling polymerization time is shortened by lowering the refrigerant temperature, improving polymerization efficiency. Simultaneously, by increasing the speed of the variable frequency motor of the transfer pump in the second reactor, the polymer flow rate and pressure are increased, reducing polymer transfer time and replenishing the polymer solution supply affected by cleaning, while ensuring storage time control standards and maintaining the quality of the spinning solution. Compared with existing technologies, this patent achieves reactor cleaning without stopping or repositioning the spinning process, without reducing output or product quality, significantly improving production efficiency and economic benefits. However, this process and apparatus use chemical methods for cleaning, which is environmentally unfriendly, and its operability in other apparatuses is limited, making it difficult to promote. Summary of the Invention

[0006] The purpose of this invention is to provide a polymerization reactor to solve the problem of the difficulty in thoroughly cleaning the polymer on the inner wall of the reactor.

[0007] To achieve the above objectives, the present invention provides a polymerization reactor capable of cleaning the inner wall of a polymer. The polymerization reactor includes a reactor body and a cleaning assembly. A manhole is provided at the top of the reactor body. The cleaning assembly includes a connecting rod with an internal water supply channel, a nozzle connected to the outlet end of the connecting rod, and a spray disc disposed on the side of the connecting rod. The surface of the spray disc is parallel to the central axis of the connecting rod. The spray disc is provided with a plurality of circumferentially spaced spray nozzles and is capable of rotating relative to the connecting rod around its central axis. The cleaning assembly can pass through the manhole and enter the reactor body to clean the inner wall of the reactor body.

[0008] In some embodiments, the spray disc is provided with 2-4 spray nozzles.

[0009] In some embodiments, the plurality of injection nozzles are evenly distributed along the circumference of the injection disk.

[0010] In some embodiments, the outlet of each of the jets is tilted clockwise or counterclockwise.

[0011] In some embodiments, the nozzle includes a fluid cavity whose inner diameter increases and then decreases from the inlet to the outlet.

[0012] In some embodiments, the manhole is eccentrically positioned such that the central axis of the manhole forms an angle with the central axis of the vessel body.

[0013] In some embodiments, the polymerization reactor includes a bracket that can be detachably disposed at the manhole, and the connecting rod can be detachably mounted on the bracket.

[0014] In some embodiments, the connecting rod is configured such that the minimum angle α1 with respect to the horizontal plane is in the range of 10°≤α1<30°, and the maximum angle α2 is in the range of 105°≤α2≤155°.

[0015] In some embodiments, the inner radius of the manhole is R1, and the outer radius of the connecting rod is R2, where R2 = 0.3R1 - 0.4R1.

[0016] In some embodiments, the maximum outer radius of the nozzle is R3, where R3 = 0.5R1 - 0.6R1.

[0017] In some embodiments, the nozzle's outlet radius is R4, where R4 = 0.1R1 - 0.2R1.

[0018] In some embodiments, the spray disc includes a disc body rotatably connected to the connecting rod and a nozzle disposed on the disc body. The overall height of the spray disc is H2, the height of the disc body is H3 and the radius is R5, the height of the nozzle is H4, and the spray nozzle has a square with a side length of H5, wherein R5 = 0.6-0.7R1, H2 = 0.4R1-0.5R1, H3 = 0.2R1-0.3R1, H4 = 0.1R1-0.2R1, and H5 = 0.1R1-0.15R1.

[0019] In some embodiments, the height H1 of the vessel body is 1m-8m, and the inner diameter D of the vessel body is 2m-12m.

[0020] In some embodiments, the inner diameter D of the vessel body is greater than 3.2m, and the inner circumferential radius of the manhole is 300mm.

[0021] In some embodiments, the inner diameter D of the vessel body is less than or equal to 3.2m, and the inner circumferential radius of the manhole is 250mm.

[0022] In some embodiments, the polymerization reactor includes a pressure pump and a water storage container connected to the connecting rod.

[0023] Through the above technical solution, the nozzle and the spray plate work together, and the rotating spray plate can spray cleaning water at a wider angle range to clean the inner wall of the polymerization reactor, thereby improving the comprehensiveness and effectiveness of the cleaning. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the structure of a polymerization reactor capable of cleaning the polymer on the inner wall according to a first embodiment of the present invention.

[0025] Figures 2-4 These are schematic diagrams of the cleaning assembly from different angles according to the first embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a polymerization reactor capable of cleaning the polymer inside the reactor according to a second embodiment of the present invention.

[0027] Figures 6-8 These are schematic diagrams of the cleaning assembly from different angles according to the second embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of a polymerization reactor capable of cleaning the polymer on the inner wall according to a third embodiment of the present invention.

[0029] Figures 10-12 These are schematic diagrams of the cleaning assembly from different angles according to the third embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures

[0031] 1 nozzle 2 spray disc

[0032] 3 Connecting rods 4 Kettle body Detailed Implementation

[0033] The specific embodiments of the present invention 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 the present invention.

[0034] refer to Figures 1-12 This invention provides a polymerization reactor capable of cleaning the inner wall of a polymer vessel. The polymerization reactor includes a vessel body 4 and a cleaning assembly. A manhole is provided at the top of the vessel body 4. The cleaning assembly includes a connecting rod 3 with an internal water supply channel, a nozzle 1 connected to the outlet end of the connecting rod 3, and a spray disc 2 disposed on the side of the connecting rod 3. The surface of the spray disc 2 is parallel to the central axis of the connecting rod 3. The spray disc 2 is provided with a plurality of circumferentially spaced spray nozzles and can rotate relative to the connecting rod 3 around its central axis. The cleaning assembly can pass through the manhole and enter the vessel body 4 to clean the inner wall of the vessel body 4.

[0035] refer to Figure 1 As shown, the top of the vessel body 4 is provided with a manhole that can be opened and closed, so as to allow the cleaning components to be inserted into the interior of the vessel body 4 through the manhole to perform cleaning operations inside.

[0036] The cleaning assembly includes a connecting rod 3, a nozzle 1, and a spray plate 2. The connecting rod 3 has a water supply channel inside, which extends through a manhole into the interior of the vessel body 4, allowing the nozzle 1 and spray plate 2 to enter the vessel body 4. The nozzle 1 is connected to the outlet end of the connecting rod 3. High-pressure water supplied by the water supply channel can be sprayed out through the nozzle 1 approximately along the axial direction of the connecting rod 3 to clean the inner wall of the vessel body 4. In particular, the spray plate 2 is located on the side of the connecting rod 3 and has circumferentially arranged spray nozzles. The surface of the spray plate 2 is parallel to the central axis of the connecting rod 3, and the orientation of the corresponding spray nozzles is also approximately parallel to the central axis of the connecting rod 3. When the spray plate 2 rotates, multiple spray nozzles can also rotate accordingly, spraying cleaning water onto the inner wall of the vessel body 4 in more directions to more thoroughly clean the interior of the vessel body 4.

[0037] The injection disc 2 is provided with 2-4 injection nozzles. (Reference) Figure 1 , Figure 5 , Figure 9 As shown, the spray disc 2 is provided with 2, 3, and 4 spray nozzles respectively. The more spray nozzles there are, the more directions in which the spray disc 2 can spray cleaning water simultaneously, achieving more comprehensive cleaning. Of course, since the spray disc 2 can rotate, any number of spray nozzles on the spray disc 2 can ensure that the space surrounding the spray disc 2 is sprayed and cleaned.

[0038] Specifically, the plurality of spray nozzles are evenly distributed along the circumference of the spray disk. When there are 2 spray nozzles, the included angle between the two spray nozzles is 180 degrees; when there are 3 spray nozzles, the included angle between adjacent spray nozzles is 120 degrees; and when there are 4 spray nozzles, the included angle between adjacent spray nozzles is 90 degrees.

[0039] Each of the spray nozzles has its outlet tilted clockwise or counterclockwise. The outlet direction of the spray nozzle is approximately radially outward and can form an angle with the radial direction, i.e., tilted clockwise or counterclockwise. Therefore, when cleaning water is sprayed from the nozzle, the reaction force of the cleaning water can drive the spray disc to rotate. It should be noted that the tilt direction of the spray nozzles is the same, either all clockwise or all counterclockwise. Alternatively, the spray disc 2 can be equipped with an independent drive component, such as a drive motor, to drive its rotation.

[0040] The connecting rod 3 comprises multiple sub-rods, which are detachably screwed together. The length of the connecting rod 3 is L1, and the connecting rod 3 is assembled from n sub-rods of length L2, i.e., L1 = nL2 (n is a positive integer and 1 ≤ n ≤ 6). The length of L2 can range from 1m to 2.5m, preferably from 1.2m to 2.4m.

[0041] Optionally, each sub-rod includes an external threaded portion and an internal threaded portion located at its two ends, respectively, and the internal threaded portion of one sub-rod can be screwed onto the external threaded portion of another sub-rod. That is, multiple sub-rods are connected by a screw connection. Of course, in other embodiments, adjacent sub-rods can also be connected by a plug-in connection using friction.

[0042] The nozzle 1 includes a fluid cavity whose inner diameter increases and then decreases from the inlet to the outlet. (Reference) Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 10 , Figure 11 As shown, the outer diameter of nozzle 1 first increases and then decreases, and its inner diameter also first increases and then decreases. Thus, by enlarging the cross-sectional area inside the nozzle, high-pressure liquid and air can be collected, and the potential energy of the high-pressure water can be converted into kinetic energy. The water is then rapidly ejected from the nozzle with a narrow cross-sectional area in the form of a high-pressure water jet to generate a high-impact water flow. Finally, the high-impact water flow is used to clean, peel, cut, and break up surface stains.

[0043] The manhole is eccentrically positioned, with its central axis forming an angle with the central axis of the vessel body 4. (Reference) Figure 1 , Figure 5 , Figure 9 As shown, the manhole is off-center, and because the top of the vessel body 4 is spherical, the manhole forms an angle with the central axis, allowing the connecting rod 3 to be inserted into the vessel body 4 at an angle. Because the connecting rod 3 is tilted, its insertion depth into the vessel body 4 allows the nozzle 1 to spray at different locations on the inner wall of the vessel body 4, and similarly, allows the spray disc 2 to spray at different locations on the inner wall of the vessel body 4. During the cleaning process, the insertion depth of the connecting rod 3 into the vessel body 4 can be adjusted to thoroughly clean the inner wall of the vessel body 4.

[0044] Additionally, the polymerization reactor includes a bracket detachably mounted at the manhole, and the connecting rod 3 is detachably mounted on the bracket. The bracket is located outside the manhole and supports the connecting rod 3, fixing it relative to the reactor body 4 for easy cleaning. After cleaning a specific location within the reactor body 4 using the cleaning assembly, the connecting rod 3 can be disassembled, its position relative to the bracket changed, and then reassembled to alter its relative position to the reactor body 4. This alteration could involve changing the length of the connecting rod 3 extending into the reactor body 4 or the angle between the connecting rod 3 and the central axis of the reactor body 4 or the manhole, allowing for cleaning of various locations within the reactor body 4 using the cleaning assembly. Furthermore, the connecting rod 3 can be configured to rotate relative to the bracket around its central axis, changing the relative position of the spray plate 2 with respect to the reactor body 4 for a more comprehensive cleaning operation.

[0045] The connecting rod 3 is configured such that the minimum angle α1 with respect to the horizontal plane is in the range of 10°≤α1<30°, and the maximum angle α2 is in the range of 105°≤α2≤155°. Here, the horizontal plane refers to the plane perpendicular to the central axis of the vessel body 4, meaning the vessel body 3 is vertically positioned in use. Since the inner diameter of the manhole is larger than the outer diameter of the connecting rod 3, the angle of the connecting rod 3 relative to the central axis of the manhole can be adjusted within a certain range, i.e., the angle α of the connecting rod 3 relative to the horizontal plane is adjusted. When the connecting rod 3 forms the minimum angle α1 with the horizontal plane, the nozzle 1 can spray cleaning water towards the inner wall away from the manhole. When the connecting rod 3 forms the maximum angle α2 with the horizontal plane, the nozzle 1 can spray cleaning water towards the inner wall closer to the manhole, achieving a more comprehensive cleaning of the inner wall of the vessel body 4. Furthermore, by adjusting the angle of the connecting rod 3, the relative angle between the surface of the spray plate 2 and the horizontal plane can also be changed.

[0046] The inner radius of the manhole is R1, and the outer radius of the connecting rod 3 is R2, where R2 = 0.3R1 - 0.4R1. The radius of the connecting rod 3 is smaller than the inner radius of the manhole, allowing adjustment of the angle of the connecting rod 3 relative to the central axis of the manhole, that is, relative to the central axis of the vessel body 4. This adjustment changes the angle between the nozzle 1 and the spray plate 2 and the vessel body 4, enabling the nozzle 1 and the spray plate 2 to spray cleaning water onto the inner wall of the vessel body 4 at various locations, achieving a comprehensive cleaning operation.

[0047] The maximum outer radius of the nozzle 1 is R3, where R3 = 0.5R1 - 0.6R1. (Reference) Figure 2 , Figure 6 , Figure 10 As shown, the outer periphery of the nozzle 1 is shaped to first increase and then decrease, so that its inner diameter is also set to first increase and then decrease, in order to increase the spray pressure and speed of the cleaning water. Specifically, the radius at the maximum point of the outer periphery of the nozzle 1 is larger than the outer diameter of the connecting rod 3.

[0048] Optionally, the outlet radius of the nozzle 1 is R4, where R4 = 0.1R1 - 0.2R1.

[0049] The spray disc 2 includes a disc body rotatably connected to the connecting rod 3 and a nozzle disposed on the disc body. The overall height of the spray disc 2 is H2, the height of the disc body is H3 and its radius is R5, the height of the nozzle is H4, and the spray nozzle's nozzle orifice is a square with a side length of H5, where R5 = 0.6-0.7R1, H2 = 0.4R1-0.5R1, H3 = 0.2R1-0.3R1, H4 = 0.1R1-0.2R1, and H5 = 0.1R1-0.15R1. (Reference) Figure 3 , Figure 7 , Figure 11 As shown, the spray disc 2 includes a roughly circular disc (or a cylinder with a very small height), one side of which faces the connecting rod 3, and the other side of which is provided with a spray pipe extending from the center to the edge. The outlet of the spray pipe is the spray port mentioned above. The inlet of the spray pipe is connected to the water supply channel of the connecting rod 3 through the disc, so as to supply cleaning water to the spray pipe through the connecting rod 3 and spray it out through the spray port. The disc and the connecting rod 3 are rotatably connected. For example, the disc can be connected to the connecting rod 3 by rotatably inserting a circular tube into the connecting rod 3. At the same time, a through hole can be provided in the center of the disc to connect the water supply channel of the connecting rod 3 to the inlet of the spray pipe.

[0050] The height H1 of the vessel body 4 is 1m-8m, and the inner diameter D of the vessel body 4 is 2m-12m. The height of the vessel body 4 is 1-8m, preferably 2-4m, for example, 2m, 3m, 4m, etc., and its inner diameter is 2m-12m, preferably 3-6m, for example, 3m, 4m, 5m, 6m.

[0051] Wherein, the inner diameter D of the vessel body 4 is greater than 3.2m, and the inner circumferential radius of the manhole is 300mm. When the inner diameter of the vessel body 4 is greater than 3.2m and less than or equal to 12m, the inner circumferential radius of the manhole can be set to 300mm.

[0052] In addition, the inner diameter D of the vessel body 4 is less than or equal to 3.2m, and the inner circumferential radius of the manhole is 250mm. When the inner diameter of the vessel body 4 is greater than or equal to 2m and less than or equal to 3.2m, the inner circumferential radius of the manhole is set to 250mm.

[0053] The above explains that different sizes of manhole radii are set according to the different inner diameters of the vessel body 4. This is because the radius of the manhole needs to correspond to the inner diameter of the vessel body 4 to avoid the manhole radius being too small, which would prevent the connecting rod 3 from being adjusted to a suitable angle and prevent the nozzle 1 and spray disc 2 from cleaning every part of the inner wall of the vessel body 4.

[0054] Additionally, the polymerization reactor includes a pressure pump connected to the connecting rod 3 and a water storage container. The water storage container can store cleaning water, and the pressure pump is installed on the pipeline connected to the connecting rod 3 to provide cleaning water with a certain pressure to the connecting rod 3, so that the cleaning water is sprayed out through the nozzle 1 and the spray plate 2 with sufficient pressure.

[0055] First set of embodiments

[0056] This embodiment uses a structure with two spray nozzles on the spray disc.

[0057] After the polymerization reactor is no longer in use, it is cleaned using a cleaning assembly. In each embodiment, the maximum radius R3 of the nozzle is 150mm, the nozzle outlet radius R4 is 50mm, the radius R5 of the spray disc is 175mm, and the overall height H2 is 125mm, wherein the disc height H3 is 75mm, the spray pipe height H4 is 50mm, and the spray nozzle side length H5 is 37.5mm.

[0058] The main parameters of the vessel body and cleaning components in each embodiment are shown in Table 1, and the implementation effect of cleaning the inner wall of the vessel body in different embodiments is shown in Table 2.

[0059] Table 1 Main parameters of the polymerization reactor

[0060]

[0061] Table 2. Effect of cleaning the inner wall of the polymerization reactor

[0062]

[0063] Second set of embodiments

[0064] This embodiment uses a structure with three spray nozzles on the spray disc.

[0065] After the polymerization reactor is no longer in use, it is cleaned using a cleaning assembly. In each embodiment, the maximum radius R3 of the nozzle is 150mm, the nozzle outlet radius R4 is 50mm, the radius R5 of the spray disc is 175mm, and the overall height H2 is 125mm, wherein the disc height H3 is 75mm, the spray pipe height H4 is 50mm, and the spray nozzle side length H5 is 37.5mm.

[0066] The main parameters of the vessel body and cleaning components in each embodiment are shown in Table 3, and the implementation effect of cleaning the inner wall of the vessel body in different embodiments is shown in Table 4.

[0067] Table 3 Main parameters of the polymerization reactor

[0068]

[0069] Table 4. Implementation Results of Cleaning the Inner Wall of the Polymerization Reactor

[0070]

[0071] Third set of embodiments

[0072] This embodiment uses a structure with four spray nozzles on the spray disc.

[0073] After the polymerization reactor is no longer in use, it is cleaned using a cleaning assembly. In each embodiment, the maximum radius R3 of the nozzle is 150mm, the nozzle outlet radius R4 is 50mm, the radius R5 of the spray disc is 175mm, and the overall height H2 is 125mm, wherein the disc height H3 is 75mm, the spray pipe height H4 is 50mm, and the spray nozzle side length H5 is 37.5mm.

[0074] The main parameters of the polymerization reactor in each embodiment are shown in Table 5, and the implementation effect of cleaning the inner wall of the reactor in different embodiments is shown in Table 6.

[0075] Table 5 Main parameters of the polymerization reactor

[0076]

[0077]

[0078] Table 6. Implementation effects of cleaning the inner walls of different polymerization reactors

[0079]

[0080] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A polymerization reactor capable of cleaning the polymer on its inner wall, characterized in that, The polymerization reactor includes a reactor body (4) and a cleaning assembly. The top of the reactor body (4) is provided with a manhole. The cleaning assembly includes a connecting rod (3) with a water supply channel inside, a nozzle (1) connected to the outlet end of the connecting rod (3), and a spray plate (2) provided on the side of the connecting rod (3). The surface of the spray plate (2) is parallel to the central axis of the connecting rod (3). The spray plate (2) is provided with a plurality of spray nozzles arranged circumferentially and can rotate relative to the connecting rod (3) around its central axis. The cleaning assembly can pass through the manhole and enter the reactor body (4) to clean the inner wall of the reactor body (4). The nozzle (1) includes a fluid cavity whose inner diameter increases and then decreases from the inlet to the outlet; The inner radius of the manhole is R1, the outer radius of the connecting rod (3) is R2, R2=0.3 R1-0.4R1, the maximum outer radius of the nozzle (1) is R3, R3=0.5 R1-0.6R1, the outlet radius of the nozzle (1) is R4, R4=0.1R1-0.2R1, the spray disc (2) includes a disc body rotatably connected to the connecting rod (3) and a spray pipe disposed on the disc body, the overall height of the spray disc (2) is H2, the height of the disc body is H3 and the radius is R5, the height of the spray pipe is H4, and the spray nozzle is a square with a side length of H5, where R5=0.6 R1-0.7R1, H2=0.4 R1-0.5R1, H3=0.2 R1-0.3R1, H4=0.1 R1-0.2R1, H5=0.1 R1-0.15R1.

2. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The spray disc (2) is provided with 2-4 spray nozzles.

3. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The plurality of the injection nozzles are evenly distributed along the circumference of the injection disk (2).

4. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The outlet of each of the jets is tilted clockwise or counterclockwise.

5. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The manhole is eccentrically positioned, and the central axis of the manhole forms an angle with the central axis of the vessel body (4).

6. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The polymerization reactor includes a bracket that can be detachably mounted at the manhole, and the connecting rod (3) can be detachably mounted on the bracket.

7. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The connecting rod (3) is set to have a minimum angle α1 with the horizontal plane ranging from 10° to α1 and from 30° to 105° to α2 and from 105° to α2 and from 155° to 155°.

8. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The height H1 of the vessel body (4) is 1m-8m, and the inner diameter D of the vessel body (4) is 2m-12m.

9. The polymerization reactor capable of cleaning the polymer inner wall according to claim 8, characterized in that, The inner diameter D of the vessel body (4) is greater than 3.2m, and the inner circumferential radius of the manhole is 300mm.

10. The polymerization reactor capable of cleaning the polymer inner wall according to claim 8, characterized in that, The inner diameter D of the vessel body (4) is less than or equal to 3.2m, and the inner circumferential radius of the manhole is 250mm.

11. The polymerization reactor capable of cleaning the polymer inner wall according to claim 1, characterized in that, The polymerization reactor includes a pressure pump and a water storage container connected to the connecting rod (3).

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