Stripping kettle for producing ethylene propylene diene monomer

Abstract

The utility model discloses a stripping kettle for producing ethylene propylene diene monomer, which relates to the technical field of coagulation reactors, and comprises a stripping kettle body, a first solution with first viscosity and a second solution with second viscosity are arranged in the stripping kettle body, and the first viscosity is greater than the second viscosity; the stripping kettle body is provided with a first input port for inputting a first solution and a second input port for inputting a second solution, the first input port and the second input port are respectively positioned below and above the liquid level of a solution to be treated, and a solution conveying device communicated with the second input port is arranged in the stripping kettle body and is used for spraying the second solution; the stirring and impurity removing device is arranged in the stripping kettle body and can be used for stirring a solution to be treated and boiling the solution to remove impurities; the second solution with low viscosity is sprayed and input, part of impurities are volatilized before the second solution enters the to-be-treated solution, pretreatment is achieved, the impurity removal efficiency is improved, meanwhile, output of energy for boiling the to-be-treated solution can be reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of coagulant reactors, in particular to a stripping kettle for producing EPDM rubber. Background Art

[0002] Rubber is a highly elastic polymer material with reversible deformation. It is highly elastic at room temperature and can deform significantly under minimal external force, returning to its original shape upon removal. Rubber is typically prepared using solution polymerization. In this process, monomers are first dissolved in a solvent such as hexane, and an initiator is added to promote the polymerization reaction. As the reaction proceeds, the monomers gradually polymerize into polymer chains, forming a solid rubber.

[0003] The polymer coagulation process is completed in a rubber coagulation reactor, by evaporating the solution and removing impurities, and finally outputting the finished product. However, the existing coagulation reactor generally has a solution input port, and the solution enters the coagulation reactor and is heated and boiled to remove impurities, resulting in a long reaction time and low production efficiency. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a stripping kettle for producing EPDM rubber.

[0005] The utility model provides a stripping kettle for producing EPDM rubber, comprising:

[0006] a stripping kettle body, wherein a solution to be treated is contained in the stripping kettle body, wherein the solution to be treated includes a first solution having a first viscosity and a second solution having a second viscosity, wherein the first viscosity is greater than the second viscosity;

[0007] The stripping kettle body is provided with a first input port for inputting the first solution and a second input port for inputting the second solution, the first input port and the second input port are respectively located below and above the liquid surface of the solution to be treated, and the stripping kettle body is provided with a solution delivery device connected to the second input port for spraying the second solution;

[0008] A stirring and impurity-removing device is provided inside the stripping kettle body and is used for stirring the solution to be treated and boiling the solution to be treated to remove impurities.

[0009] According to the technical solution provided in an embodiment of the present invention, the solution delivery device includes a first delivery pipe and a second delivery pipe that are connected to each other, the first delivery pipe is connected to the second input port, the second delivery pipe is an annular structure, the bottom of which is open, and a rotating plate is rotatably provided, a delivery space is formed between the rotating plate and the second delivery pipe, and a plurality of nozzles connected to the delivery space are provided at the bottom of the rotating plate, which are used to spray the second solution into the interior of the stripping kettle body in the form of a spray.

[0010] According to the technical solution provided in an embodiment of the present invention, the stirring and impurity removal device includes a stirring assembly, which includes a stirring shaft, which is parallel to the axis of the stripping kettle body and is rotatably arranged inside the stripping kettle body. A first stirring paddle and a second stirring paddle are fixedly arranged on the stirring shaft, which are used to rotate with the stirring shaft to stir the solution to be treated, and the first stirring paddle is closer to the bottom end of the stirring shaft relative to the second stirring paddle.

[0011] According to the technical solution provided in an embodiment of the present invention, a first bracket is provided on the inner ring side wall of the second conveying pipe, a bearing is sleeved on the stirring shaft, the inner ring of the bearing is fixedly connected to the stirring shaft, the outer ring of the bearing is fixedly connected to the end of the first bracket away from the second conveying pipe, the rotating plate is an annular structure, and a second bracket is provided on the inner ring side wall thereof, and the end of the second bracket away from the rotating plate is fixedly connected to the stirring shaft.

[0012] According to the technical solution provided in an embodiment of the present invention, the stirring and impurity removal device also includes a steam delivery component, which includes a steam delivery pipe, which is arranged at the bottom of the stripping kettle body, passes through the bottom side wall of the stripping kettle body and extends to the interior of the stripping kettle body, and is connected to a distributor. The distributor is located below the first stirring paddle, and a plurality of steam input ports are provided on the top of the distributor for delivering first steam to the interior of the stripping kettle body to boil the solution to be treated.

[0013] According to the technical solution provided in an embodiment of the present invention, the stirring and impurity removal device also includes a steam spraying component, which includes a plurality of steam spraying pipes. The plurality of steam spraying pipes are all arranged at the bottom of the stripping kettle body and are evenly distributed along the circumference. The steam spraying pipes penetrate the bottom side wall of the stripping kettle body and extend to the interior of the stripping kettle body. The steam spraying pipe has a nozzle at one end located inside the stripping kettle body, and the nozzle is arranged toward the first stirring paddle, for spraying second steam to the first stirring paddle to remove lumps condensed on the first stirring paddle.

[0014] According to the technical solution provided in an embodiment of the present invention, the stirring and impurity removal device also includes a liquid-spinning plate, which is arranged on the stirring shaft and located above the solution conveying device, and is used to spray hot water as the stirring shaft rotates to form a water curtain.

[0015] According to the technical solution provided by the embodiment of the present invention, a plurality of baffles extending along the axis are evenly and fixedly provided on the circumferential inner wall of the stripping kettle body, and the top ends of the baffles are below the liquid level of the solution to be treated.

[0016] According to the technical solution provided in the embodiment of the present utility model, a material outlet communicating with the interior of the stripping kettle body is provided on the side wall of the stripping kettle body;

[0017] A steam outlet and a manhole communicating with the interior of the stripping kettle body are provided on the top of the stripping kettle body.

[0018] According to the technical solution provided in an embodiment of the present utility model, the first input port and the second input port are connected to an external solution delivery mechanism through a first pipeline and a second pipeline respectively. The external solution delivery mechanism is provided with a detection component for detecting the viscosity of the solution. The external solution delivery mechanism is also provided with a valve body electrically connected to the detection component. The detection component controls the valve body to open the first pipeline or the second pipeline according to the viscosity of the solution.

[0019] In summary, the present technical solution specifically discloses a stripping kettle for producing EPDM rubber, comprising a stripping kettle body, wherein a solution to be treated is contained inside the stripping kettle body, wherein the solution to be treated includes a first solution having a first viscosity and a second solution having a second viscosity, wherein the first viscosity is greater than the second viscosity; a first input port for inputting the first solution and a second input port for inputting the second solution are provided on the stripping kettle body, wherein the first input port and the second input port are respectively located below and above the liquid surface of the solution to be treated, and a solution conveying device connected to the second input port is provided inside the stripping kettle body for spraying the second solution; a stirring and impurity removal device is provided inside the stripping kettle body, and is used to stir the solution to be treated and boil it to remove impurities;

[0020] By inputting the second solution with lower viscosity in the form of a spray, some impurities will be volatilized before entering the solution to be treated, thereby being pre-treated. On the one hand, the energy output required for the stirring and impurity removal device to remove impurities by heating and boiling the solution to be treated can be reduced. On the other hand, the second solution with low viscosity is sprayed for impurity removal while the first solution is boiled for impurity removal, thereby improving the impurity removal efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 This is a schematic diagram of the stripping kettle structure used to produce EPDM rubber.

[0023] Figure 2 This is a cross-sectional view of the second delivery pipe.

[0024] Numbers in the figure: 1. Steam stripping kettle body; 2. First input port; 3. Second input port; 4. First delivery pipe; 5. Second delivery pipe; 6. Nozzle; 7. Stirring shaft; 8. First stirring paddle; 9. Second stirring paddle; 10. Steam delivery pipe; 11. Distributor; 12. Steam nozzle; 13. Liquid-spinning tray; 14. Baffle; 15. Material outlet; 16. Steam exhaust port; 17. Manhole; 18. First bracket; 19. Bearing; 20. Second bracket; 21. Rotating plate. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Please refer to Figure 1 , a stripping kettle for producing EPDM rubber, comprising:

[0028] A stripping reactor body 1, wherein the stripping reactor body 1 contains a solution to be treated, wherein the solution to be treated in the stripping reactor body 1 includes a first solution having a first viscosity and a second solution having a second viscosity, wherein the first viscosity is greater than the second viscosity;

[0029] The stripping reactor body 1 is provided with a first input port 2 for inputting a first solution and a second input port 3 for inputting a second solution. The first input port 2 and the second input port 3 are respectively located below and above the liquid surface of the solution to be treated. A solution delivery device connected to the second input port 3 is provided inside the stripping reactor body 1 for spraying the second solution.

[0030] The stirring and impurity removal device is arranged inside the stripping kettle body 1 and is used to stir the solution to be treated and boil the solution to be treated to remove impurities.

[0031] Specifically, the first solution and the second solution are both rubber solution containing solutions, which can be compatible, only the viscosity is different, because the rubber solution density is smaller, so the rubber solution will be close to the liquid surface of the solution to be processed; the impurity removal device stirs the solution to be processed and makes the solution to be processed boil to remove impurities, which are volatile liquids; when the solution to be processed is reacted in the stripping kettle for producing ethylene propylene terpolymer, the solution to be processed is boiled by the impurity removal device, gas bubbles are generated, the gas bubbles float up, and there is low pressure on the moving path of the gas bubbles when they float up, so the floating gas bubbles move in the solution to be processed, and the low molecular impurities are adsorbed on the surface of the gas bubbles under the low pressure and move with the gas bubbles, and volatilize into gas on the surface of the gas bubbles under the action of high temperature, and further enter the inside of the gas bubbles under the action of low pressure, so that the gas bubbles carry the low molecular impurities volatilized into gas and float up, and finally leave the solution to be processed, so that the impurities in the solution to be processed can be removed;

[0032] The second solution with low viscosity has a high proportion of water molecules inside, and the first solution with high viscosity has a low proportion of water molecules inside. The first input port 2 and the second input port 3 are provided to respectively transport the first solution with the first viscosity and the second solution with the second viscosity, so as to realize different transport paths of the first solution and the second solution. The second solution forms a mist during the spraying process in the solution transport device above the liquid surface of the solution to be processed. Under the high temperature environment in the stripping kettle body 1, a part of the water volatilizes, so as to improve the production efficiency.

[0033] The impurity removal device comprises a stirring assembly, the stirring assembly comprises a stirring shaft 7 which can be coaxially arranged with the stripping kettle body 1 and rotatably arranged in the stripping kettle body 1. The first stirring paddle 8 and the second stirring paddle 9 are fixedly arranged on the stirring shaft 7, and are used to rotate with the stirring shaft 7 to stir the solution to be processed. The first stirring paddle 8 is closer to the bottom end of the stirring shaft 7 than the second stirring paddle 9.

[0034] Specifically, the stirring shaft 7 is driven to rotate along its axis by a driving member, which can be a driving motor. The second stirring paddle 9 can be provided with two groups arranged along the axis of the stirring shaft 7. The shape and structural parameters of the first stirring paddle 8 and the second stirring paddle 9 can be consistent or inconsistent. The first stirring paddle 8 is used to break up the gas bubbles, and the second stirring paddle 9 is used to stir the solution to be processed to form a vortex.

[0035] The solution delivery device includes a first delivery pipe 4 and a second delivery pipe 5 that are connected to each other, wherein one end of the first delivery pipe 4 is connected to the second input port 3, and the other end passes through the side wall of the second delivery pipe 5 and is connected to the interior of the second delivery pipe 5. The second delivery pipe 5 is an annular structure with an open bottom and a rotatable rotating plate 21. A delivery space is formed between the rotating plate 21 and the second delivery pipe 5. A plurality of nozzles 6 that are connected to the delivery space are provided at the bottom of the rotating plate 21 for spraying the second solution into the interior of the stripping kettle body 1 in the form of a spray.

[0036] Specifically, if Figure 2 As shown, a first bracket 18 is provided on the inner ring side wall of the second conveying pipe 5, and a bearing 19 is sleeved on the stirring shaft 7. The inner ring of the bearing 19 is fixedly connected to the stirring shaft 7, and the outer ring of the bearing 19 is fixedly connected to the end of the first bracket 18 away from the second conveying pipe 5, thereby achieving relative rotation between the second conveying pipe 5 and the stirring shaft 7; the rotating plate 21 is an annular structure, and a second bracket 20 is provided on the inner ring side wall thereof. The end of the second bracket 20 away from the rotating plate 21 is fixedly connected to the stirring shaft 7;

[0037] It should be noted that the second delivery pipe 5 can be in the form of an annular hollow tube with an open bottom, and is rotatably connected to the rotating plate 21, while ensuring good sealing through a seal, and the nozzle 6 is connected to the interior of the second delivery pipe 5;

[0038] Thus, the second solution is input from the second input port 3, enters the first delivery pipe 4 and the second delivery pipe 5, and reaches the delivery space. The second delivery pipe 5 and the stirring shaft 7 rotate relative to each other. When the stirring shaft 7 rotates, the second delivery pipe 5 remains stationary, while the rotating plate 21 and the stirring shaft 7 are fixedly connected, so that the rotating plate 21 rotates with the stirring shaft 7, thereby driving the nozzle 6 to rotate. The nozzle 6 rotates with the stirring shaft 7 to spray the second solution, realizing rotary spraying and improving the spraying efficiency of the second solution.

[0039] In other embodiments, the second delivery pipe 5 is an annular hollow tube, a delivery space is formed inside the tube, the nozzle 6 is arranged at the bottom of the second delivery pipe 5 and is connected to the delivery space, a bearing 19 is provided on the stirring shaft 7, the inner ring of the bearing 19 is fixedly connected to the stirring shaft, and the outer ring of the bearing 19 is fixedly connected to the end of the first bracket 18 away from the second delivery pipe 5, so that the second delivery pipe 5 and the stirring shaft 7 can rotate relative to each other; thus, the second solution is input from the second input port 3 and enters the delivery space of the second delivery pipe 5 from the first delivery pipe 4. When the stirring shaft 7 rotates, the second delivery pipe 5 remains stationary, and the second solution can be sprayed by the nozzle 6.

[0040] Further, the stirring and impurity removing device further comprises a steam conveying assembly, the steam conveying assembly comprises a steam conveying pipe 10 arranged at the bottom of the stripping kettle body 1 and extending through the bottom of the stripping kettle body 1 to the inside of the stripping kettle body 1, and is communicated with a distributor 11 located below the first stirring paddle 8, the distributor 11 is provided with a plurality of steam input ports at the top thereof, and is used for inputting the first steam into the inside of the stripping kettle body 1.

[0041] Optionally, the distributor 11 is in a ring structure, and an inner space for steam input is formed in the distributor 11, and the plurality of steam input ports are uniformly distributed in a ring shape at the top of the distributor 11.

[0042] Therefore, the steam conveying pipe 10 is provided with a first steam inlet at the bottom thereof, the first steam is conveyed through the steam conveying pipe 10, enters the inner space of the distributor 11, and is then input into the inside of the stripping kettle body 1 through the plurality of steam input ports, so that the first steam and the solution to be treated can be uniformly contacted, the solution to be treated is liquid, the first steam is gas, and therefore the first steam can generate first bubbles when being input into the solution to be treated, the first steam itself has heat, and the heat is released when the first steam contacts the solution to be treated, the solution to be treated absorbs heat and increases in temperature, and finally boils, and boiling generates second bubbles, the first bubbles and the second bubbles can float upwards, and are not cooled in the process of floating upwards due to the high-temperature environment in the inside of the stripping kettle body 1, water molecules evaporate into water vapor on the surfaces of the first bubbles and the second bubbles, and the first bubbles and the second bubbles move in the solution to be treated, and low-molecular impurities move with the first bubbles and the second bubbles in the low-pressure environment and volatilize into gas on the surfaces of the first bubbles and the second bubbles, and then enter the inside of the first bubbles and the second bubbles, so that the first bubbles and the second bubbles carry the low-molecular impurities volatilized into gas and float upwards, and finally leave the solution to be treated, so that the impurities in the solution to be treated can be removed.

[0043] It should be noted that the distributor 11 is located below the first stirring paddle 8, and when the plurality of steam input ports input the first steam into the inside of the stripping kettle body 1, the first stirring paddle 8 is driven to rotate by the stirring shaft 7, so that the first stirring paddle 8 can impact and scatter the first steam input by the plurality of steam input ports again, thereby increasing the heat release efficiency of the first steam, ensuring that the first steam can be uniformly contacted with the solution to be treated, and improving the impurity removing efficiency.

[0044] It should be noted that the stripping kettle body 1 is provided with a steam outlet 16 at the top thereof, and is used for discharging the gas carrying the impurities.

[0045] Furthermore, the stirring and impurity removal device also includes a steam spraying component, which includes a plurality of steam spraying pipes 12. The plurality of steam spraying pipes 12 are all arranged at the bottom of the stripping kettle body 1 and are evenly distributed in the circumferential direction. The steam spraying pipes 12 pass through the bottom of the stripping kettle body 1 and extend to the interior of the stripping kettle body 1. One end of the steam spraying pipe 12 located inside the stripping kettle body 1 has a nozzle for spraying the second steam.

[0046] Specifically, the steam spraying assembly is provided on the stripping kettle body 1 and is used to spray the second steam into the interior of the stripping kettle body 1, and the second steam is used to drive the first stirring paddle 8 to rotate; it can be understood that the steam spraying assembly includes four steam spray pipes 12, and the four steam spray pipes 12 are all provided at the bottom of the stripping kettle body 1 and are evenly distributed in the circumferential direction. The bottom of the steam spray pipe 12 has a second steam inlet, and the top of the steam spray pipe 12 passes through the bottom of the stripping kettle body 1 and extends to the interior of the stripping kettle body 1, and the top of the steam spray pipe 12 has a nozzle;

[0047] Thus, the second steam is delivered to the steam nozzle 12 through the second steam inlet, and the second steam is sprayed from the nozzle toward the first stirring paddle 8, which can stir the solution to be treated, thereby removing condensed objects and assisting the rotation of the first stirring paddle 8, thereby assisting the rotation of the stirring shaft 7, thereby preventing the solution to be treated from condensing inside the stripping reactor body 1 and blocking the rotation of the first stirring paddle 8, thereby preventing the first stirring paddle 8 from getting stuck and causing damage to the stirring shaft 7;

[0048] It should be noted that spraying the second steam into the solution to be treated will generate third bubbles, which can also float up and carry low-molecular impurities out of the solution to be treated, thereby achieving the purpose of impurity removal.

[0049] Furthermore, a plurality of baffles 14 extending along the axis of the stripping kettle body 1 are evenly and fixedly provided on the circumferential inner wall thereof, and the top ends of the baffles 14 of the stripping kettle body are below the liquid level of the solution to be treated in the stripping kettle body.

[0050] When the stirring shaft 7 rotates, driving the first stirring paddle 8 and the second stirring paddle 9 to rotate, the solution to be treated is stirred, so that a vortex is formed at the liquid surface. By arranging a baffle 14 below the liquid surface, the solution to be treated can be interfered with, so that the part below the liquid surface of the solution to be treated cannot form a vortex, while the liquid surface of the solution to be treated can form a vortex, so that the vortex generates suction, and the rubber liquid close to the liquid surface is sucked into the solution to be treated and contacts with the first bubble, the second bubble, and the third bubble, thereby fully removing impurities.

[0051] Furthermore, the stirring and impurity removal device also includes a liquid-throwing tray 13, which is fixedly arranged on the stirring shaft 7 and is located above the solution conveying device; hot water flows in the liquid-throwing tray 13, and the rotation of the stirring shaft 7 drives the liquid-throwing tray 13 to rotate, so that the liquid-throwing tray 13 can spray hot water during rotation to form a water curtain.

[0052] The liquid-spinning tray 13 can impact and block the rising rubber liquid through a water curtain, thereby preventing the rubber liquid from escaping.

[0053] Furthermore, a material outlet 15 is provided on the side wall of the stripping kettle body 1 and is communicated with the interior of the stripping kettle body 1 for outputting the condensed solution;

[0054] A manhole 17 communicating with the interior of the stripping kettle body 1 is provided on the top of the stripping kettle body 1 to facilitate personnel to enter the interior of the stripping kettle body 1 for maintenance and other operations.

[0055] It should be noted that the first input port 2 and the second input port 3 can be connected to the external solution delivery mechanism through the first pipeline and the second pipeline respectively. The external solution delivery mechanism is provided with a detection component for detecting the viscosity of the solution. The external solution delivery mechanism is also provided with a valve body, which is electrically connected to the detection component. When the detection component detects that the solution viscosity is low, the valve body switches to open the second pipeline, and the solution can enter the second input port 3. When the detection component detects that the solution viscosity is high, the valve body switches to open the first pipeline, and the solution can enter the first input port 2.

[0056] Working principle: The first solution and the second solution are input into the stripping reactor body 1 through the first input port 2 and the second input port 3, and the stirring shaft 7 is driven to rotate around its own axis by starting the driving member, thereby driving the first stirring paddle 8, the second stirring paddle 9 and the liquid-spinning plate 13 to rotate, so as to stir the solution to be treated and form a vortex at the liquid surface of the solution to be treated, so as to suck the rubber liquid close to the liquid surface into the solution to be treated, and the first steam is transported into the steam delivery pipe 10 through the first steam inlet. The first steam enters the steam inlet space inside the distributor 11 through the steam delivery pipe 10, and then is input into the stripping reactor body 1 through several steam input ports, and generates first bubbles. The first bubbles are hit and dispersed by the rotating first stirring paddle 8, so that they can be separated from the first The solutions are in uniform contact, the first steam releases heat, the first solution absorbs heat, and finally generates second bubbles, the first bubbles and the second bubbles float up, low molecular weight impurities evaporate into gas on the surfaces of the first bubbles and the second bubbles and are carried by the first bubbles and the second bubbles, thereby enabling the first bubbles and the second bubbles to flush the solution to be treated, and the first bubbles and the second bubbles contact the rubber liquid and can carry away impurities in the rubber liquid, until the first bubbles and the second bubbles float to the liquid surface, the low molecular weight impurities evaporated into gas under the action of heat rise, the water curtain formed by the liquid spinneret 13 can block the rubber liquid floating with the impurities, preventing the rubber liquid from escaping, and finally the impurities and gas are discharged through the steam outlet 16, thereby achieving impurity removal of the solution to be treated;

[0057] And the second solution is sprayed in the form of spray by the solution delivery device, the second solution is fully dispersed, and part of the impurities are volatilized before falling into the to-be-processed solution by the influence of heat inside the stripping kettle body 1, thereby improving the impurity removal efficiency, and the viscosity of the second solution after falling into the to-be-processed solution is improved, and the remaining impurities are taken away by the first bubbles, the second bubbles and the third bubbles, thereby realizing complete impurity removal.

[0058] The first solution and the second solution are delivered through the first input port 2 and the second input port 3, and the second solution is sprayed through the solution delivery device, compared with the delivery mode through only one solution input port in the prior art, the second solution with low viscosity is input in the form of spray, part of the impurities are volatilized before falling into the to-be-processed solution, thereby realizing pretreatment, and the second solution is boiled to remove impurities, thereby realizing double treatment, improving the impurity removal efficiency, reducing the reaction time, improving the production efficiency, and reducing the energy output for boiling the to-be-processed solution to remove impurities.

[0059] When the to-be-processed solution is condensed to cause the first stirring paddle 8 to be stuck, the second steam is sprayed into the stripping kettle body 1 to agitate the to-be-processed solution, so that the condensed blocks are removed, thereby ensuring that the first stirring paddle 8 can continue to rotate, avoiding the first stirring paddle 8 being stuck due to the condensation of the to-be-processed solution, and avoiding damage to the stirring device.

[0060] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the utility model range involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the utility model concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A stripping kettle for producing EPDM rubber, characterized in that: include: A stripping kettle body (1), wherein a solution to be treated is contained in the stripping kettle body (1), wherein the solution to be treated comprises a first solution having a first viscosity and a second solution having a second viscosity, wherein the first viscosity is greater than the second viscosity; The stripping kettle body (1) is provided with a first input port (2) for inputting the first solution and a second input port (3) for inputting the second solution, the first input port (2) and the second input port (3) being located below and above the liquid surface of the solution to be treated, respectively, and a solution conveying device connected to the second input port (3) is provided inside the stripping kettle body (1) for spraying the second solution; A stirring and impurity removal device is provided inside the stripping kettle body (1) and is used for stirring the solution to be treated and boiling the solution to be treated to remove impurities.

2. A stripping kettle for producing EPDM rubber according to claim 1, characterized in that: The solution delivery device comprises a first delivery pipe (4) and a second delivery pipe (5) which are connected to each other. The first delivery pipe (4) is connected to the second input port (3). The second delivery pipe (5) is an annular structure with an open bottom and a rotating plate (21) rotatably provided thereon. A delivery space is formed between the rotating plate (21) and the second delivery pipe (5). A plurality of nozzles (6) connected to the delivery space are provided at the bottom of the rotating plate (21) for spraying the second solution into the interior of the stripping kettle body (1) in the form of a spray.

3. A stripping kettle for producing EPDM rubber according to claim 2, characterized in that: The stirring and impurity removal device includes a stirring assembly, which includes a stirring shaft (7) parallel to the axis of the stripping kettle body (1) and rotatably arranged inside the stripping kettle body (1). A first stirring paddle (8) and a second stirring paddle (9) are fixedly arranged on the stirring shaft (7) for rotating with the stirring shaft (7) to stir the solution to be treated, and the first stirring paddle (8) is closer to the bottom end of the stirring shaft (7) relative to the second stirring paddle (9).

4. A stripping kettle for producing EPDM rubber according to claim 3, characterized in that: A first bracket (18) is provided on the inner ring side wall of the second conveying pipe (5), a bearing (19) is sleeved on the stirring shaft (7), the inner ring of the bearing (19) is fixedly connected to the stirring shaft (7), the outer ring of the bearing (19) is fixedly connected to an end of the first bracket (18) away from the second conveying pipe (5), the rotating plate (21) is an annular structure, and a second bracket (20) is provided on the inner ring side wall thereof, and the end of the second bracket (20) away from the rotating plate (21) is fixedly connected to the stirring shaft (7).

5. A stripping kettle for producing EPDM rubber according to claim 4, characterized in that: The stirring and impurity removal device further comprises a steam delivery component, wherein the steam delivery component comprises a steam delivery pipe (10), which is arranged at the bottom of the stripping kettle body (1), passes through the bottom side wall of the stripping kettle body (1) and extends into the interior of the stripping kettle body (1), and is connected to a distributor (11). The distributor (11) is located below the first stirring paddle (8), and a plurality of steam input ports are provided on the top of the distributor (11) for delivering first steam into the interior of the stripping kettle body (1) to boil the solution to be treated.

6. A stripping kettle for producing EPDM rubber according to claim 5, characterized in that: The stirring and impurity removal device further comprises a steam spraying assembly, wherein the steam spraying assembly comprises a plurality of steam spraying pipes (12), wherein the plurality of steam spraying pipes (12) are all arranged at the bottom of the stripping kettle body (1) and are evenly distributed along the circumference, wherein the steam spraying pipes (12) penetrate the bottom side wall of the stripping kettle body (1) and extend into the interior of the stripping kettle body (1), wherein one end of the steam spraying pipe (12) located inside the stripping kettle body (1) has a nozzle, wherein the nozzle is arranged toward the first stirring paddle (8) and is used for spraying second steam toward the first stirring paddle (8) to remove lumps condensed on the first stirring paddle (8).

7. A stripping kettle for producing EPDM rubber according to claim 6, characterized in that: The stirring and impurity removal device further comprises a liquid-spinning plate (13), which is arranged on the stirring shaft (7) and located above the solution delivery device, and is used for spraying hot water as the stirring shaft (7) rotates to form a water curtain.

8. The stripping kettle for producing EPDM rubber according to claim 1, characterized in that: A plurality of baffles (14) extending along the axis of the stripping kettle body (1) are evenly and fixedly arranged on the circumferential inner wall thereof, and the top ends of the baffles (14) are located below the liquid level of the solution to be treated.

9. The stripping kettle for producing EPDM rubber according to claim 1, characterized in that: A material outlet (15) is provided on the side wall of the stripping kettle body (1) and is in communication with the interior of the stripping kettle body (1); The top of the stripping kettle body (1) is provided with a steam outlet (16) and a manhole (17) which are in communication with the interior of the stripping kettle body (1).

10. The stripping kettle for producing EPDM rubber according to claim 1, characterized in that: The first input port (2) and the second input port (3) are connected to an external solution delivery mechanism through a first pipeline and a second pipeline respectively. The external solution delivery mechanism is provided with a detection component for detecting the viscosity of the solution. The external solution delivery mechanism is also provided with a valve body electrically connected to the detection component. The detection component controls the valve body to open the first pipeline or the second pipeline according to the viscosity of the solution.

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