A continuous production device and a continuous production line of polymer polyol

Abstract

The application provides a continuous production device and a continuous production line of polymer polyol, and relates to the technical field of chemical equipment. The continuous production device comprises a tubular reactor, a tubular curing device, material pipes and a feeding device. The lower part of the tubular reactor is provided with a first feeding port, and the upper part is provided with a first discharging port. The first feeding port is connected with a feeding pipe. The lower part of the tubular curing device is provided with a second feeding port, and the upper part is provided with a second discharging port. The second feeding port is connected with the first discharging port. A plurality of material pipes are arranged in parallel and at intervals in the inner cavities of the tubular reactor and the tubular curing device. The lower end of the material pipe is communicated with the first feeding port, and the upper end of the material pipe is communicated with the first discharging port. The feeding device is arranged on the feeding pipe. The application can solve the problem of incomplete reaction or excessive reaction of the reaction kettle device in the prior art, and has the effect of sufficient and complete reaction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical equipment, in particular to a continuous production device and a continuous production line of polymer polyol. BACKGROUND

[0002] In chemical production, the mixing and synthesis of raw materials are indispensable, and the feeding method and the uniformity of the mixing of raw materials in the reaction device are crucial to the production efficiency, production cost and product quality. The reaction kettle is a commonly used chemical equipment, and a plurality of chemical raw materials are usually added into the reaction kettle, and the plurality of chemical raw materials are allowed to react in the reaction kettle to obtain the required reaction product.

[0003] In the continuous line, due to the continuous feeding of the reaction kettle of the traditional reaction kettle device, a part of the material will enter the next reaction device in advance under the action of stirring and circulation, so that the reaction is incomplete, the residual single is high, the smell is large, and the difficulty of later treatment is increased; a part of the material will delay the time of entering the next reactor, so that the reaction is excessive, and by-products are produced. These two conditions will reduce the conversion rate of the target product and make the product normal distribution more dispersed. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of incomplete reaction or excessive reaction of the reaction kettle device in the prior art, low conversion rate of the target product, and to provide a continuous production device and a continuous production line of polymer polyol.

[0005] In order to solve the above problems, the present application provides a continuous production device, which comprises a tubular reactor, a tubular curing device, a material pipe and a feeding device. The lower part of the tubular reactor is provided with a first feeding port, and the upper part is provided with a first discharging port; the first feeding port is connected with a feeding pipe; the lower part of the tubular curing device is provided with a second feeding port, and the upper part is provided with a second discharging port; the second feeding port is connected with the first discharging port; the material pipe is provided with a plurality of parallel and spaced intervals in the inner cavity of the tubular reactor and the tubular curing device, the lower end of the material pipe is communicated with the first feeding port, and the upper end of the material pipe is communicated with the first discharging port; the feeding device is arranged on the feeding pipe.

[0006] Optionally, the first feeding port is arranged at the bottom of the tubular reactor, and the first discharging port is arranged at the top of the tubular reactor; the inner cavity of the tubular reactor is provided with a first partition plate located at the lower part and a second partition plate located at the upper part, the first end of the material pipe is connected with the first partition plate, the second end of the material pipe is connected with the second partition plate, the first partition plate and the second partition plate are both provided with mounting holes corresponding to the material pipes in one-to-one correspondence, and the material pipes are communicated with the inner cavity of the tubular reactor through the mounting holes.

[0007] Optionally, the tubular reactor is connected with a temperature control device.

[0008] Optionally, the temperature control device comprises a heat exchange inlet and a heat exchange outlet arranged on the side wall of the tubular reactor, and the heat exchange inlet and the heat exchange outlet are communicated with the inner cavity of the tubular reactor.

[0009] Optionally, the inner cavity of the tubular reactor is provided with a plurality of guide plates arranged at intervals along the axial direction, and the adjacent guide plates are distributed in a staggered manner along the radial direction of the tubular reactor, so that the inner cavity of the tubular reactor forms a tortuous heat exchange channel.

[0010] Optionally, the guide plate is provided with a plurality of through holes for the material pipes to pass through, and the guide plate is sleeved on the plurality of material pipes.

[0011] Optionally, the tubular curing device has the same structure as the tubular reactor.

[0012] Optionally, the feeding pipe is connected with a mixer.

[0013] Optionally, the feeding pipe is connected with a batching kettle, the batching kettle is located upstream of the mixer, and the second discharge port is connected with a post-processing device.

[0014] Another aspect of the present application provides a continuous production line of polymer polyol, comprising the continuous production device of any one of the above technical solutions.

[0015] The present application has the following advantages:

[0016] 1. By using the technical solution of the present application, the tubular reactor and the tubular curing device are arranged, the lower part of the tubular reactor is provided with a first feeding port, the upper part is provided with a first discharge port, the inner cavity of the tubular reactor is provided with a plurality of parallel and spaced material pipes, the material is fed into the tubular reactor from the first feeding port under the power provided by the feeding device, and the material is reacted in the plurality of material pipes, and the material uplink enters the material pipe in the tubular curing device for further sufficient reaction. The flow rate of the material can be controlled by controlling the feeding device, and then the residence time of the material in the tubular reactor and the residence time of the material in the tubular curing device are controlled, so that the material can be fully and completely reacted in the tubular reactor and the tubular curing device. It can not only avoid the incomplete reaction between materials caused by short residence time, and high residual single, but also avoid the excessive reaction between materials caused by long residence time, and the production of by-products. In addition, the materials in the tubular reactor and the tubular curing device run from bottom to top, and the feeding mode of the traditional reaction kettle is from top to bottom. The material falls quickly due to gravity, causing material accumulation and incomplete reaction. Compared with the above, in the present application, the feeding mode of the material is changed from top to bottom by means of the driving of the feeding device and the overflow effect, so that the material can slowly uplink in the material pipe, ensure more sufficient reaction, reduce the production of by-products, improve the conversion rate of target product, and make the normal distribution of parameters such as product viscosity and particle size more concentrated.

[0017] 2. In the prior art, the continuous production device comprising a reaction kettle is usually provided with a stirring system and a circulating system, which consumes high power, has high production cost and high failure rate, and the failure of mechanical equipment will seriously affect the progress of continuous production. In the present application, the tubular reactor and the tubular curing device are connected in series to form a continuous production device, which does not have a stirring system and a circulating system, can reduce the loss of power, reduce the production cost, and due to the reduction of mechanical equipment, the failure rate in the production process can be reduced, and the progress of continuous production is ensured.

[0018] 3. The tubular reactor and the tubular curing device are both connected with a temperature control device, by setting a flow guide plate in the inner cavity of the tubular reactor, the inner cavity of the tubular reactor forms a circuitous heat exchange channel, which can expand the contact area of the material pipe and the heat exchange medium, so that the heat exchange medium can fully contact with the material pipe in the inner cavity of the tubular reactor, and similarly, the heat exchange medium can fully contact with the material pipe in the inner cavity of the tubular curing device, which improves the heat exchange efficiency, more quickly and accurately controls the reaction temperature, further makes the material reaction more fully, completely and stably, improves the conversion rate of the target product, and makes the normal distribution of parameters such as product viscosity and particle size more concentrated.

[0019] 4. By setting a mixer on the feed pipe, the material can be mixed in advance before entering the tubular reactor for reaction, which can make the reaction process of the material more fully and uniformly. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 Fig. 1 shows a structure schematic diagram of a continuous production device provided by an embodiment of the present application;

[0022] Figure 2 Fig. 2 shows a partial structure schematic diagram of a tubular reactor;

[0023] Figure 3 Fig. 3 shows a top view of one structure of a flow guide plate.

[0024] Explanation of reference signs:

[0025] 1, tubular reactor; 11, first feed inlet; 12, first discharge outlet; 13, heat exchange inlet; 14, heat exchange outlet; 15, head; 2, tubular ripener; 21, second feed inlet; 22, second discharge outlet; 3, material pipe; 4, feeding device; 5, feed pipe; 6, second partition plate; 7, guide plate; 71, through hole; 8, mixer; 9, batching kettle; 10, post-processing device; 20, overflow pipe; 30, discharge pipe; 40, mounting bracket. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] In order to facilitate the introduction of the technical solutions of the present application, the following will be described in detail in combination with the drawings and specific embodiments, but the embodiments should not be regarded as a limitation on the present application.

[0031] Example 1

[0032] A continuous production device, with reference to Figures 1-3The application relates to a continuous production device for producing target product, which comprises a tubular reactor 1, a tubular curing device 2, material pipes 3 and a feeding device 4. The lower part of the tubular reactor 1 is provided with a first feeding port 11, and the upper part is provided with a first discharging port 12; the first feeding port 11 is connected with a feeding pipe 5; the lower part of the tubular curing device 2 is provided with a second feeding port 21, and the upper part is provided with a second discharging port 22; the second feeding port 21 is connected with the first discharging port 12; the material pipes 3 are provided in parallel and at intervals in the inner cavities of the tubular reactor 1 and the tubular curing device 2, the lower end of the material pipe 3 is communicated with the first feeding port 11, and the upper end of the material pipe 3 is communicated with the first discharging port 12; and the feeding device 4 is arranged on the feeding pipe 5.

[0033] According to the technical scheme of the application, the tubular reactor 1 is provided with the first feeding port 11 at the lower part and the first discharging port 12 at the upper part, the inner cavity of the tubular reactor 1 is provided with a plurality of material pipes 3 arranged in parallel and at intervals, the material is fed into the tubular reactor 1 from the first feeding port 11 under the power provided by the feeding device 4, and then the material is fed into the plurality of material pipes 3 to react, and then the material is fed into the tubular curing device 2 from the first feeding pipe 5, and then the material is fed into the material pipe 3 to further fully react, the flow rate of the material can be controlled by controlling the feeding device 4, and then the residence time of the material in the tubular reactor 1 and the residence time of the material in the tubular curing device 2 can be controlled, so that the material can fully and completely react in the tubular reactor 1 and the tubular curing device 2, the incomplete reaction between the materials caused by the short residence time can be avoided, and the excessive reaction between the materials caused by the long residence time can also be avoided, and the by-products can be reduced; in addition, the materials in the tubular reactor 1 and the tubular curing device 2 are fed from the bottom to the top, and the feeding mode of the materials is changed to from the top to the bottom by the driving of the feeding device 4 and the overflow effect, so that the material can slowly go up in the material pipe 3, the reaction can be more sufficient, the by-products can be reduced, the conversion rate of the target product can be improved, and the normal distribution of the parameters such as the viscosity and the particle size of the product can be more concentrated.

[0034] In the existing continuous production device comprising a reaction kettle, a stirring system and a circulating system are usually arranged, the power consumption is high, the production cost is high, and the failure rate is high, and the failure of the mechanical equipment will seriously affect the progress of the continuous production. In the application, the tubular reactor 1 and the tubular curing device 2 are connected in series to form a continuous production device, and the device does not have a stirring system and a circulating system, so that the power loss can be reduced, the production cost can be reduced, and the failure rate in the production process can be reduced due to the reduction of the mechanical equipment, and the continuous production progress is ensured.

[0035] Specifically, the tubular reactor 1 and the tubular ripener 2 are arranged in parallel through the mounting bracket 40. The first discharge port 12 of the tubular reactor 1 and the second feed port 21 of the tubular ripener 2 are communicated through the overflow pipe 20, and the material in the tubular reactor 1 can overflow into the tubular ripener 2 through the overflow pipe 20. The materials in the tubular reactor 1 and the tubular ripener 2 run from bottom to top.

[0036] Specifically, the feeding device 4 includes a conveying pump.

[0037] Optionally, the first feed port 11 is arranged at the bottom of the tubular reactor 1, and the first discharge port 12 is arranged at the top of the tubular reactor 1. The inner cavity of the tubular reactor 1 is provided with a first partition plate located at the lower part and a second partition plate 6 located at the upper part. The first end of the material pipe 3 is connected with the first partition plate, and the second end of the material pipe 3 is connected with the second partition plate 6. The first partition plate and the second partition plate 6 are both provided with mounting holes corresponding to the material pipe 3, and the material pipe 3 is communicated with the inner cavity of the tubular reactor 1 through the mounting holes. Specifically, referring to Figure 2 The two ends of the tubular reactor 1 are connected with the end cover 15, and the first partition plate and the second partition plate 6 are arranged in the tubular reactor 1 close to the end cover 15. The outer periphery of the first partition plate and the second partition plate 6 is fixedly connected with the inner side wall of the tubular reactor 1. The first partition plate and the second partition plate 6 divide the inner cavity of the tubular reactor 1 into three cavities from bottom to top, which are the first chamber, the intermediate chamber and the second chamber. The material pipe 3 is arranged in the intermediate chamber along the axial direction of the tubular reactor 1. The first feed port 11, the first chamber, the material pipe 3, the second chamber and the first discharge port 12 are communicated with each other. The structure of the tubular ripener 2 is the same as that of the tubular reactor 1, and therefore, the second feed port 21, the first chamber, the material pipe 3, the second chamber and the second discharge port 22 are communicated with each other.

[0038] Optionally, the tubular reactor 1 is connected with a temperature control device.

[0039] Optionally, the temperature control device comprises a heat exchange inlet 13 and a heat exchange outlet 14 arranged on the side wall of the tubular reactor 1, and the heat exchange inlet 13 and the heat exchange outlet 14 are both in communication with the inner cavity of the tubular reactor 1. The heat exchange inlet 13 is used for connecting a heat exchange medium input pipeline, and the heat exchange outlet 14 is used for connecting a heat exchange medium output pipeline. The heat exchange medium input pipeline and the heat exchange medium output pipeline are respectively connected with a heat exchange device for providing a refrigeration medium or a heating medium. The refrigeration medium includes cooling water, and the heat exchange medium includes hot steam. Whether the heat exchange medium is a refrigeration medium or a heating medium depends on whether the reaction process of the material is an exothermic reaction or an endothermic reaction. When the reaction process of the material is an endothermic reaction, the heat exchange medium is a heating medium to warm the material. When the reaction process of the material is an exothermic reaction, the heat exchange medium is a refrigeration medium to cool the material. The tubular ripener 2 has the same structure as the tubular reactor 1, that is, the tubular ripener 2 is also connected with a temperature control device, so as to control the temperature in the tubular reactor 1 and the tubular ripener 2, make the material in the material pipe 3 react more fully, improve the conversion rate of the target product, and make the normal distribution of parameters such as the viscosity and particle size of the product more concentrated.

[0040] Specifically, in the embodiment, with reference to Figure 1 , the heat exchange inlet 13 is arranged at the lower part of the tubular reactor 1, and the heat exchange outlet 14 is arranged at the upper part of the tubular reactor 1. Further, the heat exchange inlet 13 and the heat exchange outlet 14 are both in communication with the intermediate chamber. The heat exchange medium enters the intermediate chamber of the tubular reactor 1 from the heat exchange inlet 13, and the material enters the first chamber from the first feeding port 11 and then enters the material pipe 3 through the mounting hole on the first partition plate. The heat exchange medium is isolated from the material, which can heat exchange with the material to control the reaction temperature of the material without affecting the chemical reaction of the material. The heat exchange medium enters the intermediate chamber from the heat exchange inlet 13, contacts the material pipe 3, and exchanges heat with the material in the material pipe 3 to control the reaction temperature. In the embodiment, the material moves from bottom to top, and the heat exchange medium also moves from bottom to top. Of course, as an alternative embodiment, the heat exchange inlet 13 is arranged at the upper part of the intermediate chamber, the heat exchange outlet 14 is arranged at the lower part of the intermediate chamber, and the flow direction of the heat exchange medium is from top to bottom, which also has the effect of temperature control.

[0041] Optionally, the inner cavity of the tubular reactor 1 is provided with a plurality of guide plates 7 arranged at intervals along the axial direction, and the adjacent guide plates 7 are distributed in a staggered manner along the radial direction of the tubular reactor 1, so as to form a tortuous heat exchange channel in the inner cavity of the tubular reactor 1.

[0042] The tubular reactor 1 is connected with a temperature control device, and the inner cavity of the tubular reactor 1 forms a circuitous heat exchange channel by arranging the flow guide plates 7 in the inner cavity of the tubular reactor 1, so that the contact area of the material pipe 3 and the heat exchange medium can be expanded, the heat exchange medium can be in full contact with the material pipe 3 in the inner cavity of the tubular reactor 1, and the heat exchange medium can also be in full contact with the material pipe in the inner cavity of the tubular reactor 2, so as to improve the heat exchange efficiency, more quickly and accurately control the reaction temperature, further make the material reaction more sufficient, complete and stable, improve the conversion rate of the target product, and make the normal distribution of parameters such as viscosity and particle size of the product more concentrated.

[0043] Optionally, the flow guide plate 7 is provided with a plurality of through holes 71 for the material pipe 3 to pass through, and the flow guide plate 7 is sleeved on the plurality of material pipes 3. Specifically, referring to Figure 3 In the embodiment, one side of the flow guide plate 7 is arc-shaped, and is matched and fixedly connected with the inner wall of the tubular reactor 1. The other side of the flow guide plate 7 extends towards the middle part of the tubular reactor 1, and a spacing is left between the inner wall of the tubular reactor 1 and the inner wall on the opposite side of the tubular reactor 1, so as to form a flow channel of the heat exchange medium. The flow channels between the staggered flow guide plates 7 are communicated with each other, and form a circuitous heat exchange channel. The flow guide plate 7 is used for guiding the flow direction of the heat exchange medium. The heat exchange medium flows in the circuitous heat exchange channel, so as to expand the contact area between the heat exchange medium and the material pipe 3, thereby improving the heat exchange efficiency and realizing rapid and accurate temperature control.

[0044] Of course, the shape, size and staggered spacing of the flow guide plate 7 can be determined according to the size and structure of the actual tubular reactor 1, and are not limited here. For example, the flow guide plate 7 is arranged in a staggered spiral shape along a spiral line from bottom to top.

[0045] Optionally, the feeding pipe 5 is connected with a mixer 8. By arranging the mixer 8 on the feeding pipe 5, the material can be mixed in advance before entering the tubular reactor 1 for reaction, so that the reaction process of the material can be more sufficient and uniform. Specifically, the mixer 8 is provided with a spiral blade. After the material enters the mixer 8, the material flows along the spiral blade, and the material is fully mixed, so that the material is uniformly mixed before entering the tubular reactor 1, and the material can be fully reacted.

[0046] Optionally, the feeding pipe 5 is connected with a batching kettle 9, the batching kettle 9 is located upstream of the mixer 8, and the second discharge port 22 is connected with a post-treatment device 10 through a discharge pipe 30.

[0047] Specifically, the initial material is put into the batching kettle 9, and then is conveyed by the feeding device 4, mixed by the mixer 8, and then is reacted in the tubular reactor 1. The flow rate of the material is controlled by the feeding device 4, so as to control the residence time of the material in the tubular reactor 1, and the reaction temperature of the material is controlled by the temperature control device, so as to make the reaction process more stable and sufficient. When the material is reacted to about 70% in the tubular reactor 1, the material can enter the tubular aging device 2 for further reaction, so as to make the material fully and completely react, improve the conversion rate of the target product, and make the normal distribution of the parameters such as the viscosity and the particle size of the product more concentrated.

[0048] Embodiment 2

[0049] A continuous production line of the polymer polyol comprises the continuous production device described in Embodiment 1. The continuous production line of the polymer polyol has all the advantages of the continuous production device described in Embodiment 1, which will not be repeated here.

[0050] According to the above description, the patent application has the following advantages:

[0051] 1. The material flows from bottom to top, and the flow rate of the material is controlled by the feeding device 4, so as to accurately control the residence time of the material in the tubular reactor 1 and the tubular aging device 2, ensure that the material is fully reacted and not excessively reacted, the material in the tubular reactor 1 re-enters the tubular aging device 2 for further reaction, so as to make the material fully react and improve the conversion rate of the target product, and make the normal distribution of the parameters such as the viscosity and the particle size of the product more concentrated.

[0052] 2. The tubular reactor 1 is connected with the temperature control device, and the flow guide plate 7 is arranged in the inner cavity of the tubular reactor 1, so as to more quickly and accurately control the reaction temperature, and further make the material more fully, completely and stably react.

[0053] 3. By arranging the mixer 8 on the feeding pipe 5, the material can be mixed in advance before entering the tubular reactor 1 for reaction, so as to make the reaction process of the material more fully and uniformly.

[0054] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A continuous production line for polymer polyols, characterized in that, include: A tubular reactor (1) is provided with a first inlet (11) at the bottom and a first outlet (12) at the top; the first inlet (11) is connected to a feed pipe (5). A tubular curing device (2) is provided with a second inlet (21) at the bottom and a second outlet (22) at the top; the second inlet (21) is connected to the first outlet (12); Material pipe (3), multiple material pipes (3) are provided and are arranged in parallel and spaced apart in the inner cavity of the tubular reactor (1) and the tubular ripening device (2). The lower end of the material pipe (3) is connected to the first feed port (11) and the upper end of the material pipe (3) is connected to the first discharge port (12). A feeding device (4) is provided on the feed pipe (5); The tubular reactor (1) has a first partition at the bottom and a second partition (6) at the top in its inner cavity. The first end of the material pipe (3) is connected to the first partition, and the second end of the material pipe (3) is connected to the second partition (6). The first partition and the second partition (6) are each provided with mounting holes corresponding to the material pipe (3). The material pipe (3) communicates with the inner cavity of the tubular reactor (1) through the mounting holes. The first partition and the second partition (6) divide the inner cavity of the tubular reactor (1) into three chambers, which are the first chamber, the intermediate chamber and the second chamber from bottom to top; the material pipe (3) is arranged in the intermediate chamber along the axial direction of the tubular reactor (1); The tubular reactor (1) has a number of spaced guide plates (7) arranged along the axial direction in its inner cavity. The adjacent guide plates (7) are staggered along the radial direction of the tubular reactor (1), so that the inner cavity of the tubular reactor (1) forms a meandering heat exchange channel. The first outlet (12) of the tubular reactor (1) and the second inlet (21) of the tubular ripening device (2) are connected by an overflow pipe (20).

2. The continuous production line for polymer polyols according to claim 1, characterized in that, The first feed inlet (11) is located at the bottom of the tubular reactor (1), and the first discharge outlet (12) is located at the top of the tubular reactor (1).

3. The continuous production line for polymer polyols according to claim 1, characterized in that, The tubular reactor (1) is connected to a temperature control device.

4. The continuous production line for polymer polyols according to claim 3, characterized in that, The temperature control device includes a heat exchange inlet (13) and a heat exchange outlet (14) located on the side wall of the tubular reactor (1), and the heat exchange inlet (13) and the heat exchange outlet (14) are both connected to the inner cavity of the tubular reactor (1).

5. The continuous production line for polymer polyols according to claim 1, characterized in that, The guide plate (7) is provided with a plurality of through holes (71) for the material pipes (3) to pass through, and the guide plate (7) is fitted onto a plurality of the material pipes (3).

6. A continuous production line for polymer polyols according to any one of claims 1-5, characterized in that, The structure of the tubular ripening device (2) is the same as that of the tubular reactor (1).

7. A continuous production line for polymer polyols according to any one of claims 1-5, characterized in that, A mixer (8) is connected to the feed pipe (5).

8. The continuous production line for polymer polyols according to claim 7, characterized in that, The feed pipe (5) is connected to the batching vessel (9), which is located upstream of the mixer (8), and the second discharge port (22) is connected to the post-processing device (10).

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