Devolatilization device and devolatilization method thereof

Abstract

The present application relates to a devolatilization device and a devolatilization method thereof. The devolatilization device comprises: a reactor having a devolatilization chamber; a first orifice plate disposed at the inlet of the reactor; a second orifice plate movably disposed within the devolatilization chamber, the second orifice plate being capable of reciprocating along the vertical direction of the reactor; a spring assembly connected between the first orifice plate and the second orifice plate; the second orifice plate moving toward or away from the first orifice plate to cause the spring assembly to compress or extend; and an adjustment assembly, the second orifice plate being connected to the reactor via the adjustment assembly. The technical solution of the present application effectively solves the technical problems of conventional devolatilization devices, which have a single function and high devolatilization cost.

Description

Technical Field

[0001] The present application relates to the technical field of compound devolatilization, and in particular to a devolatilization device and a devolatilization method thereof. Background Art

[0002] Polymer devolatilization is a process for separating small molecules from polymer systems. These small molecules are generally referred to as volatiles, which include unreacted monomers, solvents and various polymerization reaction by-products.

[0003] A devolatilizer is a device that removes small molecules from polymers. After the polymer enters the devolatilizer, the material is redistributed through a distributor, taking advantage of the different boiling points of different polymer media, to vaporize and separate the different polymer components. Finally, the unpolymerized gas phase residual monomers are devolatilized and extracted, thereby reducing the residual monomer content in the material and improving its quality. Due to the varying viscosities of different polymers, the requirements for devolatilization time and devolatilization conditions vary. However, a single model of devolatilizer often only provides one devolatilization time and devolatilization condition, resulting in a single function. Therefore, when devolatilizing polymers of different viscosities, the industry often needs to switch to different models of devolatilizer to achieve the best devolatilization effect for polymers of different viscosities. However, frequent replacement of devolatilizers significantly increases production costs. Summary of the Invention

[0004] The present application provides a devolatilization device and a devolatilization method thereof to solve the technical problems of traditional devolatilization devices having single functions and high devolatilization costs.

[0005] To this end, in a first aspect, an embodiment of the present application provides a devolatilization device, comprising:

[0006] A reactor having a devolatilization chamber;

[0007] A first orifice plate is provided at the inlet of the reactor;

[0008] A second orifice plate is movably disposed in the devolatilization chamber, and the second orifice plate can reciprocate along the vertical direction of the reactor;

[0009] A spring assembly is connected between the first orifice plate and the second orifice plate; the second orifice plate moves toward or away from the first orifice plate to compress or extend the spring assembly; and

[0010] The second orifice plate is connected to the reactor through the adjusting component.

[0011] In one possible embodiment, a movable groove is provided on the inner wall of the reactor, and the movable groove extends radially along the reactor. The adjustment component includes an elastic member and a limit clip. The limit clip is connected to the movable groove through the elastic member. The limit clip has an extended state and a retracted state. In the extended state, the suspended end of the limit clip extends out of the movable groove, and the second orifice plate is overlapped on the suspended end of the limit clip; in the retracted state, the limit clip is received in the movable groove, and there is a gap between the second orifice plate and the reactor.

[0012] In a possible embodiment, there are multiple movable grooves, which are spaced apart along the axial direction of the reactor, and there are multiple adjustment components, with at least one adjustment component being arranged in one movable groove; and / or,

[0013] There are multiple movable grooves, which are spaced apart along the circumference of the reactor. There are multiple adjustment components, and at least one adjustment component is arranged in one movable groove.

[0014] In a possible embodiment, a connecting hook is provided on the side of the second orifice plate away from the first orifice plate, a fixing groove is provided at the outlet of the reactor, and the adjustment assembly includes a telescopic part and a fixing part. The telescopic part can move telescopically along the axial direction of the reactor, one end of the telescopic part is hooked to the connecting hook, and the other end is connected to the fixing part; the fixing part extends radially along the telescopic part, and both ends of the fixing part extend out of the telescopic part and are inserted into the fixing groove.

[0015] In one possible embodiment, an internal thread is provided on the inner wall of the reactor, the adjustment assembly includes a rotating part and a driving part, an external thread is provided on the outer wall of the rotating part, the rotating part is threadably connected to the reactor through the external thread, and the driving part is detachably connected to the side of the rotating part away from the second orifice plate, and the driving part is used to drive the rotating part to rotate.

[0016] In a possible embodiment, a plurality of first flow distribution holes are provided on the first orifice plate, a plurality of second flow distribution holes are provided on the second orifice plate, one second flow distribution hole is provided corresponding to one first flow distribution hole, and the spring assembly includes a plurality of springs, at least one spring is connected between the corresponding first flow distribution hole and the second flow distribution hole.

[0017] In a possible embodiment, a plurality of flow guide members are further provided on the first orifice plate, at least one flow guide member is provided corresponding to a first flow distribution hole, and the spring is connected to the corresponding first flow distribution hole through the flow guide member.

[0018] In a possible implementation manner, the second orifice plate makes axial movement at a position one-third of the bottom of the reactor.

[0019] In a second aspect, the present application further provides a devolatilization method for the devolatilization device as described above, comprising:

[0020] Obtaining the viscosity of the liquid to be devolatilized;

[0021] When the viscosity is less than or equal to a first preset viscosity, controlling the second orifice plate to be connected to the first position of the reactor to stretch the spring assembly;

[0022] When the viscosity is greater than a first preset viscosity, the second orifice plate is controlled to be connected to a second position of the reactor to compress the spring assembly; wherein the second position is higher than the first position.

[0023] In a possible implementation manner, the first preset viscosity is 500 CP.

[0024] According to the devolatilization device and devolatilization method provided in the embodiment of the present application, the devolatilization device includes: a reactor having a devolatilization chamber; a first orifice plate, arranged at the inlet of the reactor; a second orifice plate, movably arranged in the devolatilization chamber, and the second orifice plate can move back and forth along the vertical direction of the reactor; a spring assembly, connected between the first orifice plate and the second orifice plate; the second orifice plate moves in a direction close to or away from the first orifice plate to drive the spring assembly to compress or stretch; and an adjustment assembly, the second orifice plate is connected to the reactor through the adjustment assembly. The technical solution of the present application optimizes the specific structure of the devolatilization device so that the length of the drainage piece arranged below the distributor can be adjusted to adjust the devolatilization time of the liquid to be devolatilized in the reactor, so that the same reactor can meet the devolatilization operation of liquids to be devolatilized with different viscosities, enriches the function of the devolatilization device, improves the effective utilization rate of the devolatilization device, and reduces the devolatilization cost. Specifically, the devolatilization device is configured as a composite component comprising at least a reactor, a first orifice plate, a second orifice plate, a spring assembly, and an adjustment assembly. The first orifice plate, the spring assembly, and the second orifice plate are sequentially arranged along the axial direction of the reactor within the devolatilization chamber of the reactor. The liquid to be devolatilized enters the reactor through the first orifice plate and flows sequentially through the spring assembly and the second orifice plate to complete the devolatilization operation. The axial length of the spring assembly is adjustable, allowing the devolatilization device to adapt to liquids of varying viscosities and providing sufficient devolatilization time for liquids of varying viscosities. In this way, for low-viscosity liquid to be devolatilized, the devolatilization device can effectively devolatilize the low-viscosity liquid to be devolatilized by stretching the axial length of the spring assembly. At this time, the spring assembly is in a stretched state, which can provide a steeper drainage path for the low-viscosity liquid to be devolatilized. On the one hand, the steep drainage path can overcome the problem that the low-viscosity liquid to be devolatilized will directly fall from the first orifice plate to the second orifice plate due to its own gravity and small surface tension, and the drainage member will not play a drainage role. On the other hand, the spring assembly in the stretched state can provide a longer axial drainage distance for the low-viscosity liquid to be devolatilized, extend the devolatilization time of the low-viscosity liquid to be devolatilized, and improve the devolatilization effect. For high-viscosity liquids to be devolatilized, shortening the axial length of the spring assembly allows the devolatilizer to effectively devolatilize the liquid. At this point, the spring assembly is in a compressed state, providing a flatter drainage path for the high-viscosity liquid. This prevents the high-viscosity liquid from escaping the spring assembly due to its high surface tension. Furthermore, the flat drainage path slows the flow of the high-viscosity liquid, thereby extending the time the high-viscosity liquid spends on the spring assembly and improving the devolatilization effect. This design significantly expands the applicability and effective utilization of the devolatilizer, improving devolatilization efficiency while reducing devolatilization costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention. In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a scale limitation.

[0026] Figure 1 A schematic structural diagram of a devolatilization device provided in the first embodiment of the present application;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 A schematic structural diagram of a devolatilization device provided in the second embodiment of the present application;

[0029] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0030] Figure 5 for Figure 3 Cross-sectional bottom view at point B in the middle;

[0031] Figure 6 A schematic structural diagram of a devolatilization device provided in the third embodiment of the present application;

[0032] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0033] Figure 8 A top view of the first orifice plate provided in an embodiment of the present application;

[0034] Figure 9 A side cross-sectional view of a first orifice plate provided in an embodiment of the present application;

[0035] Figure 10 A top view of the second orifice plate provided in an embodiment of the present application;

[0036] Figure 11 Flowchart of the devolatilization method provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, reactor; 101, devolatilization chamber; 102, movable tank; 103, fixed tank;

[0039] 200, first orifice plate; 201, first flow distribution hole; 210, flow guide member;

[0040] 300, second orifice plate; 301, second flow distribution hole; 310, connecting hook;

[0041] 400, spring assembly; 410, spring;

[0042] 500, adjustment component; 510, elastic member; 520, limit clip; 530, telescopic member; 540, fixing member; 550, rotating member;

[0043] Z, axial; X, radial. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0046] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0047] See also Figures 1 to 10 , an embodiment of the present application provides a devolatilization device, which includes: a reactor 100, a first orifice plate 200, a second orifice plate 300, a spring assembly 400 and an adjustment assembly 500.

[0048] The reactor 100 has a devolatilization chamber 101;

[0049] The first orifice plate 200 is provided at the inlet of the reactor 100;

[0050] The second orifice plate 300 is movably disposed in the devolatilization chamber 101 and can reciprocate along the axial direction Z of the reactor 100;

[0051] The spring assembly 400 is connected between the first orifice plate 200 and the second orifice plate 300; the second orifice plate 300 moves toward or away from the first orifice plate 200 to drive the spring assembly 400 to compress or expand; and

[0052] The second orifice plate 300 is connected to the reactor 100 via the adjusting component 500 .

[0053] In this embodiment, by optimizing the specific structure of the devolatilization device, the length of the drainage piece arranged below the distributor is made adjustable to adjust the devolatilization time of the liquid to be devolatilized in the reactor 100. This allows the same reactor 100 to meet the devolatilization operation requirements for liquids to be devolatilized with different viscosities, enriching the functions of the devolatilization device, improving the effective utilization rate of the devolatilization device, and reducing the devolatilization cost.

[0054] Specifically, the devolatilization device is configured as a composite component comprising at least a reactor 100, a first orifice plate 200, a second orifice plate 300, a spring assembly 400, and an adjustment assembly 500. The first orifice plate 200, the spring assembly 400, and the second orifice plate 300 are sequentially arranged along the axial direction Z of the reactor 100 within the devolatilization chamber of the reactor 100. The liquid to be devolatilized enters the reactor 100 through the first orifice plate 200 and flows sequentially through the spring assembly 400 and the second orifice plate 300, completing the devolatilization operation. The axial length Z of the spring assembly 400 is adjustable to enable the devolatilization device to adapt to liquids of varying viscosities and provide sufficient devolatilization time for each liquid. The adjustment assembly 500 can adjust the position of the second orifice plate 300 and simultaneously secure the second orifice plate 300 to the reactor 100.

[0055] In this way, for the low-viscosity liquid to be devolatilized, the axial Z length of the spring assembly 400 can be stretched, so that the devolatilization device can meet the requirements of effectively devolatilizing the low-viscosity liquid to be devolatilized. At this time, the spring assembly 400 is in a stretched state, which can provide a steeper drainage path for the low-viscosity liquid to be devolatilized. On the one hand, the steep drainage path can overcome the problem that the low-viscosity liquid to be devolatilized will directly fall from the first orifice plate 200 to the second orifice plate 300 due to its own gravity and small surface tension, and the drainage member will not play a drainage role. On the other hand, the spring assembly 400 in the stretched state can provide the low-viscosity liquid to be devolatilized with a longer axial Z drainage distance, thereby extending the devolatilization time of the low-viscosity liquid to be devolatilized and improving the devolatilization effect. For high-viscosity liquids to be devolatilized, shortening the axial Z length of the spring assembly 400 allows the devolatilization device to effectively devolatilize the high-viscosity liquid. At this point, the spring assembly 400 is in a compressed state, providing a flatter drainage path for the high-viscosity liquid to be devolatilized. On the one hand, due to the high surface tension of the high-viscosity liquid itself, the high-viscosity liquid to be devolatilized will not escape from the spring assembly 400 under its own gravity. On the other hand, the flat drainage path can slow the flow rate of the high-viscosity liquid, thereby extending the devolatilization time of the high-viscosity liquid on the spring assembly 400 and improving the devolatilization effect. This design significantly expands the applicability and effective utilization of the devolatilization device, improving devolatilization efficiency while reducing devolatilization costs.

[0056] In one example, the inlet end of the reactor 100 is connected to the bottom of the heat exchanger, that is, the liquid to be devolatilized passes through the heat exchanger and then through the first orifice plate 200 into the reactor 100 for devolatilization.

[0057] In one example, the first orifice plate 200 is a circular plate structure, the second orifice plate 300 is a circular plate structure, and the radial X dimension of the second orifice plate 300 is greater than or equal to the radial X dimension of the second orifice plate 300 .

[0058] See also Figure 1and Figure 2 In one possible embodiment, a movable groove 102 is provided on the inner wall of the reactor 100. The movable groove 102 extends along the radial direction X of the reactor 100. The adjustment assembly 500 includes an elastic member 510 and a limiting clip 520. The limiting clip 520 is connected to the movable groove 102 via the elastic member 510. The limiting clip 520 has an extended state and a retracted state. In the extended state, the suspended end of the limiting clip 520 extends out of the movable groove 102, and the second orifice plate 300 overlaps the suspended end of the limiting clip 520. In the retracted state, the limiting clip 520 is retracted in the movable groove 102, and a gap is formed between the second orifice plate 300 and the reactor 100.

[0059] In this embodiment, the specific configuration of the adjustment assembly is optimized. Specifically, the adjustment assembly 500 is configured as a composite component comprising at least an elastic member 510 and a limiting clip 520. One end of the elastic member 510 can be connected to the bottom of the movable groove 102 by welding or bonding, while the other end of the elastic member 510 is connected to the limiting clip 520 by welding. In the extended state, the free end of the limiting clip 520 extends out of the movable groove 102, and the elastic member 510 is in an extended state. In the retracted state, the free end of the limiting clip 520 is retracted into the movable groove 102, and the elastic member 510 is in a compressed state. Under the action of the axial Z external force, the limit clip 520 changes from the extended state to the retracted state, and the elastic member 510 changes from the extended state to the compressed state; when the limit clip 520 is no longer subjected to the axial Z external force, the elastic member 510 changes from the compressed state to the extended state, and the limit clip 520 extends outward under the elastic force of the elastic member 510, exposing the movable groove 102. At this time, the second orifice plate 300 can be overlapped on the suspended end of the limit clip 520 to fix the position of the second orifice plate 300.

[0060] In one example, the limit clip 520 has a certain axial thickness to ensure that when the second orifice plate 300 is overlapped on the end of the limit clip 520, the limit clip 520 will not be pushed open under the action of the gravity of the second orifice plate 300, the spring assembly 400, the first orifice plate 200 and the liquid to be devolatilized, thereby limiting the second orifice plate 300 and preventing the second orifice plate 300 from continuing to move away from the first orifice plate 200.

[0061] In one example, the elastic member 510 is a coil spring, a disc spring, etc.

[0062] In one example, a connecting hook 310 is provided on the side of the second orifice plate 300 away from the first orifice plate 200. This allows the connecting hook 310 on the second orifice plate 300 to be hooked with an external component, such as a hooked push rod, and then the hooked push rod is pulled out to move the second orifice plate 300 away from the first orifice plate 200, thereby achieving axial Z-stretching / stretching / lengthening of the spring assembly 400. To shorten the axial Z-length of the spring assembly 400, the hooked push rod is hooked with the connecting hook 310 on the second orifice plate 300, and then the hooked push rod is further pushed into the reactor 100 to move the second orifice plate 300 toward the first orifice plate 200. It should be understood that when the second orifice plate 300 moves in the axial Z direction, the adjustment component 500 is retracted into the movable groove 102 under the action of the axial Z external force to avoid the second orifice plate 300 and allow the second orifice plate 300 to continue to move in the axial Z direction; when the axial Z external force is stopped, the adjustment component 500 extends out of the movable groove 102 to form a position limit in the axial Z direction of the reactor 100. Under the action of this position limit, the second orifice plate 300 cannot continue to move and is fixed on the adjustment component 500.

[0063] In a possible embodiment, there are multiple movable grooves 102 , which are spaced apart along the axial direction Z of the reactor 100 . There are multiple adjustment assemblies 500 , and at least one adjustment assembly 500 is arranged in one movable groove 102 .

[0064] In this embodiment, in order to fix the axial Z position of the second orifice plate 300, multiple movable grooves 102 and multiple adjustment components 500 are set. The multiple movable grooves 102 are arranged at intervals along the axial Z of the reactor 100, and the multiple adjustment components 500 are also arranged at intervals along the axial Z of the reactor 100. In this way, the position of the second orifice plate 300 in the axial Z can be determined and fixed by different adjustment components 500 set in the axial Z.

[0065] In a possible embodiment, there are multiple movable grooves 102 , which are spaced apart along the circumference of the reactor 100 . There are multiple adjustment assemblies 500 , and at least one adjustment assembly 500 is arranged in one movable groove 102 .

[0066] In this embodiment, in order to improve the stability of the axial Z position of the second orifice plate 300, a plurality of movable grooves 102 and a plurality of adjustment components 500 are provided. The plurality of movable grooves 102 are arranged at intervals along the circumference of the reactor 100, and the plurality of adjustment components 500 are also arranged at intervals along the circumference of the reactor 100. In this way, the second orifice plate 300 can be fixed in the axial Z direction by different adjustment components 500 provided in the circumferential direction of the reactor 100.

[0067] In one example, four movable slots 102 and four adjustment assemblies 500 are provided. The four movable slots 102 and the four adjustment assemblies 500 are evenly distributed along the circumference, with one adjustment assembly 500 corresponding to each movable slot 102. This provides four supporting points for the second orifice plate 300 along the circumference of the reactor 100, effectively supporting and securing the second orifice plate 300.

[0068] See also Figures 3 to 5 In one possible embodiment, a connecting hook 310 is provided on a side of the second orifice plate 300 away from the first orifice plate 200, a fixing groove 103 is provided at the outlet of the reactor 100, and the adjustment assembly 500 includes a telescopic member 530 and a fixing member 540. The telescopic member 530 can telescope along the axial direction Z of the reactor 100. One end of the telescopic member 530 is hooked to the connecting hook 310, and the other end is connected to the fixing member 540; the fixing member 540 extends along the radial direction X of the telescopic member 530, and both ends of the fixing member 540 extend out of the telescopic member 530 and are inserted into the fixing groove 103.

[0069] In this embodiment, the specific configuration of the adjustment assembly is optimized. Specifically, the adjustment assembly 500 is configured as a composite component comprising at least a telescopic member 530 and a fixed member 540. The telescopic member 530 is connected to the fixed member 540 to form a nearly semi-cross structure. The two free ends of the fixed member 540 are inserted into the fixed groove 103 at the outlet of the reactor 100, and the free end of the telescopic member 530 is hooked onto the second orifice plate 300. In this way, the distance between the support assembly 600 and the second orifice plate 300 can be adjusted by the telescopic member 530 extending and retracting.

[0070] In one example, the suspended end of the telescopic member 530 is provided with a hook that can be hooked to the connecting hook 310. The other end of the telescopic member 530 is movably connected to the fixed member 540. For example, the fixed member 540 is provided with an internal threaded hole, and the telescopic member 530 is provided with an external thread, and the telescopic member 530 is threadedly connected to the internal threaded hole of the fixed member 540 via the external thread. In this way, the length of the telescopic member 530 can be adjusted by rotating the telescopic member 530, thereby adjusting the distance between the support assembly 600 and the second orifice plate 300.

[0071] See also Figure 6 and Figure 7 In one possible embodiment, an internal thread is provided on the inner wall of the reactor 100, and the adjustment assembly 500 includes a rotating member 550 and a driving member (not shown in the figure). An external thread is provided on the outer wall of the rotating member 550, and the rotating member 550 is threadedly connected to the reactor 100 via the external thread. The driving member is detachably connected to a side of the rotating member 550 away from the second orifice plate 300, and the driving member is used to drive the rotating member 550 to rotate.

[0072] In this embodiment, the specific configuration of the adjustment assembly 500 is optimized. Specifically, the adjustment assembly 500 is configured as a composite component comprising at least a rotating member 550 and a driving member. The rotating member 550 is threadedly connected to the inner wall of the reactor 100, and the output end of the driving member is connected to the rotating member 550. In this manner, the driving member can drive the rotating member 550 to rotate, thereby achieving axial Z position movement of the rotating member 550. In this case, the second orifice plate 300 can be connected to the rotating member 550 via a shaft connector or other component to ensure that the second orifice plate 300 does not rotate with the rotating member 550.

[0073] In one example, the rotating member 550 is a disc structure with external threads. The driving member is a drive motor to realize intelligent driving of the rotating member 550; alternatively, the driving member can be a structure such as a hooked top rod. In this case, a hook-shaped structure is provided on the side of the rotating member 550 away from the second orifice plate 300. When in use, the hooked top rod is first hooked onto the hook structure of the rotating member 550, and then the hooked top rod is rotated by external force or manual rotation, thereby realizing rotation of the rotating member 550.

[0074] See also Figures 8 to 10 In one possible embodiment, the first orifice plate 200 is provided with a plurality of first flow distribution holes 201, and the second orifice plate 300 is provided with a plurality of second flow distribution holes 301, one second flow distribution hole 301 is provided corresponding to one first flow distribution hole 201, and the spring assembly 400 includes a plurality of springs 410, at least one spring 410 is connected between the corresponding first flow distribution hole 201 and the second flow distribution hole 301.

[0075] In this embodiment, the specific configuration of the spring assembly 400 is optimized. Specifically, the spring assembly 400 is configured as a combination of multiple springs 410, with at least one spring 410 positioned between a first flow distribution hole 201 and a second flow distribution hole 301, thereby forming a strip-like drainage structure within the reactor 100. Each spring 410 can drain the liquid to be devolatilized within a first flow distribution hole 201, allowing the liquid to be devolatilized to form a uniformly distributed strip-like structure within the reactor 100, thereby enhancing the devolatilization effect.

[0076] In one example, one spring 410 is disposed between each first flow distribution hole 201 and each second flow distribution hole 301. Of course, in other embodiments, multiple springs 410 may be disposed between each first flow distribution hole 201 and each first and second flow distribution hole 301, with multiple elastic members spaced apart along the periphery of each first flow distribution hole 201 and each second flow distribution hole 301.

[0077] See also Figure 9In a possible embodiment, a plurality of flow guide members 210 are further provided on the first orifice plate 200 , at least one flow guide member 210 is provided corresponding to a first flow distribution hole 201 , and the spring 410 is connected to the corresponding first flow distribution hole 201 through the flow guide member 210 .

[0078] In this embodiment, the specific configuration of the first orifice plate 200 is optimized. Specifically, a plurality of flow guides 210 are provided on the first orifice plate 200, and the spring 410 is connected to the first flow distribution hole 201 through the flow guides 210. For example, but not limited to, the flow guides 210 may be steel wires or tapered flow guide clips.

[0079] In a possible implementation, the second orifice plate 300 moves axially at a position one-third of the bottom of the reactor 100 .

[0080] In this embodiment, to ensure that the spring assembly 400 is in an appropriately extended or compressed position and thus provide a suitable drainage path for the liquid to be devolatilized, the movement space of the second orifice plate 300 is limited to the position 1 / 3 of the bottom of the reactor 100. The maximum axial movement height of the second orifice plate 300 does not exceed the position 1 / 2 of the reactor 100, that is, the middle position in the vertical direction of the reactor 100; the minimum axial movement height of the second orifice plate 300 does not fall below the position 1 / 5 of the bottom of the reactor 100.

[0081] See also Figure 11 In a second aspect, the present application further provides a devolatilization method for the devolatilization device as described above, comprising:

[0082] Step S1, obtaining the viscosity of the liquid to be devolatilized;

[0083] Step S2: When the viscosity is less than or equal to a first preset viscosity, controlling the second orifice plate 300 to be connected to the first position of the reactor 100 to stretch the spring assembly 400;

[0084] Step S3: When the viscosity is greater than the first preset viscosity, the second orifice plate 300 is controlled to be connected to the second position of the reactor 100 to compress the spring assembly 400; wherein the second position is higher than the first position.

[0085] In this embodiment, a devolatilization method suitable for the devolatilization device of the present application is provided. First, the viscosity of the devolatilization liquid is obtained. The devolatilization state of the devolatilization device is determined based on the viscosity value, so that the spring assembly 400 used as a drain can be in an optimal axial Z drainage length. If the viscosity is less than or equal to a first preset viscosity, it indicates that the viscosity of the devolatilization liquid is relatively low, and it is a low-viscosity devolatilization liquid. In this case, the second orifice plate 300 is arranged in the first position of the reactor 100 to maintain the spring assembly 400 in an extended state, thereby providing a steeper drainage path for the low-viscosity devolatilization liquid. On the one hand, the steep drainage path overcomes the problem that the low-viscosity devolatilization liquid, due to its own gravity and low surface tension, will directly fall from the first orifice plate 200 to the second orifice plate 300, and the drain member will not function as a drain. On the other hand, the extended spring assembly 400 provides a longer axial Z drainage distance for the low-viscosity devolatilization liquid, extending the devolatilization time of the low-viscosity devolatilization liquid and improving the devolatilization effect. If the viscosity is greater than the first preset viscosity, it indicates that the viscosity of the liquid to be devolatilized is relatively high, and it is a high-viscosity liquid to be devolatilized. In this case, the second orifice plate 300 needs to be arranged at the second position of the reactor 100 to keep the spring assembly 400 in a compressed state, which can provide a flatter drainage path for the high-viscosity liquid to be devolatilized. On the one hand, due to the high surface tension of the high-viscosity liquid to be devolatilized itself, the high-viscosity liquid to be devolatilized will not separate from the spring assembly 400 under the action of its own gravity. On the other hand, the flat drainage path can slow the flow rate of the high-viscosity liquid, thereby extending the devolatilization time of the high-viscosity liquid to be devolatilized on the spring assembly 400 and improving the devolatilization effect. In this way, this design greatly improves the scope of application and effective utilization of the devolatilization device, improves the devolatilization efficiency, and reduces the devolatilization cost.

[0086] In a possible implementation manner, the first preset viscosity is 500 CP.

[0087] In this embodiment, the liquid to be devolatilized having a viscosity greater than 500 CP is defined as a high-viscosity liquid to be devolatilized, and the liquid to be devolatilized having a viscosity less than or equal to 500 CP is defined as a low-viscosity liquid to be devolatilized.

[0088] To further illustrate the beneficial effects of the devolatilization method for the devolatilization apparatus described above, as provided by the present disclosure, the following description is provided in conjunction with a set of specific examples. It should be understood that these specific examples serve to further illustrate the present disclosure and do not limit its scope. Furthermore, the raw materials and equipment used in these examples are commercially available.

[0089] Example Group 1

[0090] 1. Operation steps: The embodiment group performed devolatilization operation by the devolatilization device provided in the present application, and the comparative group performed devolatilization operation by the traditional devolatilization device (it should be understood that there is no spring assembly in the traditional devolatilization device. Among them, there is no drainage assembly at all in Comparative Example 1, and the traditional devolatilization device in Comparative Example 1 is used to perform devolatilization operation on high-viscosity liquid; in Comparative Example 2, there is a steel wire as a drainage assembly, and the traditional devolatilization device in Comparative Example 2 is used to perform devolatilization operation on low-viscosity liquid; in Comparative Example 3, there is a steel wire as a drainage assembly, and the traditional devolatilization device in Comparative Example 3 is used to perform devolatilization operation on high-viscosity liquid), and the devolatilization effect shown in Table 1 below was obtained.

[0091] Table 1 Devolatilization effect of different experimental groups

[0092] plan Liquid to be devolatilized Viscosity / CP Time / s Product purity / % Example 1 polyacrylamide ＜500 5.33 99.9 Example 2 biodegradable plastics 500-5000 8.42 99.9 Comparative Example 1 biodegradable plastics 500-5000 0.64 95.1 Comparative Example 2 polyacrylamide ＜500 0.98 97.5 Comparative Example 3 biodegradable plastics 500-5000 1.82 98.6

[0093] 2. Result analysis:

[0094] As can be seen from Example 1 and Comparative Example 2, the spiral drainage path can effectively increase the devolatilization time of the low-viscosity liquid to be devolatilized and improve the devolatilization effect; at this time, the devolatilization time is increased to 5.33 seconds, and the product purity reaches 99.9%.

[0095] As can be seen from Example 2 and Comparative Example 1, the spiral drainage path can effectively increase the devolatilization time of the high-viscosity liquid to be devolatilized and improve the devolatilization effect; at this time, the devolatilization time is increased to 8.42 seconds and the product purity reaches 99.9%.

[0096] As can be seen from Example 2 and Comparative Example 3, the spiral drainage path can effectively increase the devolatilization time of the high-viscosity liquid to be devolatilized and improve the devolatilization effect; at this time, the devolatilization time is increased to 8.42 seconds and the product purity reaches 99.9%.

[0097] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0098] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0099] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A devolatilization device, characterized in that: include: A reactor having a devolatilization chamber; A first orifice plate, disposed at the inlet of the reactor and provided with a plurality of first flow distribution holes; a second orifice plate movably disposed in the devolatilization chamber and provided with a plurality of second flow distribution holes, wherein one second flow distribution hole is provided corresponding to one first flow distribution hole, and the second orifice plate is reciprocatable along the vertical direction of the reactor; a spring assembly connected between the first orifice plate and the second orifice plate, the spring assembly comprising a plurality of springs, at least one of the springs being connected between a corresponding first flow distribution hole and a corresponding second flow distribution hole; the second orifice plate moving toward or away from the first orifice plate drives the spring assembly to compress or expand; as well as The second orifice plate is connected to the reactor via the adjusting component. The adjusting component can adjust the position of the second orifice plate and fix the second orifice plate on the reactor.

2. The devolatilization device according to claim 1, characterized in that A movable groove is provided on the inner wall of the reactor, and the movable groove extends radially along the reactor. The adjustment component includes an elastic member and a limit clip. The limit clip is connected to the movable groove through the elastic member. The limit clip has an extended state and a retracted state. In the extended state, the suspended end of the limit clip extends out of the movable groove, and the second orifice plate is overlapped on the suspended end of the limit clip; in the retracted state, the limit clip is received in the movable groove, and a gap is formed between the second orifice plate and the reactor.

3. The devolatilization device according to claim 2, characterized in that: There are multiple movable grooves, and the multiple movable grooves are spaced apart along the axial direction of the reactor; there are multiple adjustment components, and at least one adjustment component is arranged in one movable groove; and / or, There are multiple movable grooves, and the multiple movable grooves are arranged at intervals along the circumference of the reactor. There are multiple adjustment components, and at least one adjustment component is arranged in one movable groove.

4. The devolatilization device according to claim 1, characterized in that A connecting hook is provided on the side of the second orifice plate away from the first orifice plate, and a fixing groove is provided at the outlet of the reactor. The adjustment assembly includes a telescopic part and a fixing part. The telescopic part can move telescopically along the axial direction of the reactor. One end of the telescopic part is hooked to the connecting hook, and the other end is connected to the fixing part; the fixing part extends radially along the telescopic part, and both ends of the fixing part extend out of the telescopic part and are inserted into the fixing groove.

5. The devolatilization device according to claim 1, characterized in that: An internal thread is provided on the inner wall of the reactor, and the adjustment assembly includes a rotating member and a driving member. An external thread is provided on the outer wall of the rotating member, and the rotating member is threadedly connected to the reactor through the external thread. The driving member is detachably connected to the side of the rotating member away from the second orifice plate, and the driving member is used to drive the rotating member to rotate.

6. The devolatilization device according to claim 1, characterized in that The first orifice plate is further provided with a plurality of flow guide members, at least one of the flow guide members is provided corresponding to one of the first flow distribution holes, and the spring is connected to the corresponding first flow distribution hole through the flow guide member.

7. The devolatilization device according to claim 1, characterized in that The second orifice plate moves axially at a position one-third of the bottom of the reactor.

8. A devolatilization method for the devolatilization device according to any one of claims 1 to 7, characterized in that: include: Obtaining the viscosity of the liquid to be devolatilized; When the viscosity is less than or equal to a first preset viscosity, controlling the second orifice plate to be connected to the first position of the reactor to stretch the spring assembly; When the viscosity is greater than a first preset viscosity, the second orifice plate is controlled to be connected to a second position of the reactor to compress the spring assembly; wherein the second position is higher than the first position.

9. The devolatilization method according to claim 8, characterized in that: The first preset viscosity is 500CP.

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