Polysulfone polymer liquid treatment system and method

Abstract

The invention relates to a polysulfone polymer liquid treatment system and method. A polysulfone polymer liquid high-speed sprayer is used for spraying liquid drops of polysulfone polymer liquid; the circulating liquid nozzle is used for spraying circulating liquid to form a liquid barrier, so that the liquid drops are in contact with the liquid barrier to form a cured substance; the tank body is used for accommodating a cured material and residual circulating liquid; the filter is used for filtering the condensate and the residual circulating liquid; the powder receiver is used for receiving the filtered condensate; the filtrate receiver is used for receiving the filtered circulating liquid; and the circulating filtrate booster pump is used for pumping the circulating liquid in the filtrate receiver to the circulating liquid spray head. The continuous and efficient production of polysulfone is realized, and the filter and the powder receiver are combined, so that the production efficiency is further improved, the energy consumption is reduced, the polysulfone polymerization liquid is efficiently and continuously converted into solid, the liquid is recycled, the production cost is reduced, and the device has the advantages of simple structure, low cost and the like. The operation is stable; the treatment efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of polysulfone production, and in particular to a polysulfone polymerization liquid processing system and method. Background Art

[0002] Polysulfone is a thermoplastic resin containing sulfone and arylene groups in the main chain of the molecule. Its English name is Poly-Sulfone, referred to as PSF or PSU, including ordinary bisphenol A type polysulfone (PSU), polyaryl sulfone (PASF), polyether sulfone (PES), polyether sulfone resin (PES) and polyphenylene sulfone resin (PPSU). The polysulfone usually refers to ordinary bisphenol A type PSF, which is a kind of engineering plastics with high temperature resistance and high mechanical strength, and has excellent creep resistance, tensile strength and flexural modulus.

[0003] In the production process of polysulfone, whether it is a two-step process or a one-step process, a polysulfone polymerization liquid must be obtained first, and then a solvent different from that in the previous polymerization process, such as water, ethanol or methanol, is used as a precipitant, and the polysulfone polymerization liquid is added to the precipitant, for example, the polysulfone polymerization liquid is injected into the precipitant, so that the polysulfone is separated from the polymer solution.

[0004] However, polysulfone polymer liquid is a fluid that quickly solidifies into a solid when it comes into contact with water. In industrial processing, converting it into a powder form usually requires efficient spraying and crushing technology. The current technology has the problems of low processing efficiency and high energy consumption. Summary of the invention

[0005] Based on this, it is necessary to provide a polysulfone polymerization liquid processing system and method.

[0006] In one embodiment, a polysulfone polymerization liquid processing system includes a polysulfone polymerization liquid high-speed sprayer, a circulating liquid nozzle, a tank, a filter, a powder receiver, a filtrate receiver, and a circulating filtrate booster pump;

[0007] The polysulfone polymerization liquid high-speed sprayer is used to spray droplets of the polysulfone polymerization liquid;

[0008] The circulating liquid nozzle is used to spray the circulating liquid to form a liquid barrier, so that the liquid droplets contact the liquid barrier to form a solidified object;

[0009] The tank body is used to contain the solidified material and the remaining circulating fluid;

[0010] The filter is used to filter the solidified material and the remaining circulating fluid;

[0011] The powder receiver is used to receive the solidified material after filtering;

[0012] The filtrate receiver is used to receive the circulating liquid after filtering;

[0013] The circulating filtrate booster pump is used to pump the circulating liquid in the filtrate receiver to the circulating liquid nozzle.

[0014] The above-mentioned polysulfone polymerization liquid processing system is conducive to the continuous and efficient production of polysulfone through the polysulfone polymerization liquid high-speed sprayer in conjunction with the circulating liquid nozzle, the filtrate receiver and the circulating filtrate booster pump, and is combined with the filter and the powder receiver to further improve the production efficiency and reduce energy consumption. Therefore, on the one hand, it is conducive to the efficient and continuous conversion of polysulfone polymerization liquid into solid, on the other hand, it realizes the recycling of liquid and reduces production costs. On the other hand, it has the advantages of simple structure, stable operation, high processing efficiency, etc.

[0015] Exemplarily, the polysulfone polymerization liquid high-speed sprayer is provided with a high-speed spray head.

[0016] In one embodiment, the polysulfone polymerization liquid processing system further comprises a pulverizer, and the pulverizer is used to pulverize the solidified material to obtain solid particles;

[0017] The filter is used to filter the solid particles and the remaining circulating liquid.

[0018] In one embodiment, the pulverizer is a multi-stage pulverizer, which is used to pulverize the solidified material to obtain solid particles by at least two-stage pulverization.

[0019] In one embodiment, the polysulfone polymerization liquid processing system further includes a mixer, and the mixer is used to mix the solidified material and the remaining circulating liquid to obtain a mixed liquid;

[0020] The pulverizer is used to pulverize the solidified material in the mixed liquid to obtain solid particles in the mixed liquid.

[0021] In one embodiment, the tank body is provided with an overflow port for conveying the mixed liquid to the pulverizer from the overflow port.

[0022] In one embodiment, the overflow port is located in the middle of the tank body;

[0023] The polysulfone polymerization liquid high-speed sprayer and the circulating liquid nozzle are located above the overflow port.

[0024] In one embodiment, a method for treating a polysulfone polymerization solution comprises the steps of:

[0025] The polysulfone polymerization liquid high-speed sprayer sprays out droplets of the polysulfone polymerization liquid;

[0026] The circulating liquid spray head sprays the circulating liquid to form a liquid barrier;

[0027] The liquid droplet contacts the liquid barrier to form a solidified object;

[0028] filtering the solidified material and the remaining circulating fluid;

[0029] receiving the filtered solidified material;

[0030] The filtered circulating liquid is received and pumped to the circulating liquid nozzle.

[0031] In one embodiment, before filtering the solidified material and the remaining circulating liquid, the polysulfone polymerization liquid treatment method further comprises the steps of: crushing the solidified material to obtain solid particles;

[0032] Filtering the solidified material and the remaining circulating fluid includes filtering the solid particles and the remaining circulating fluid.

[0033] In one embodiment, the solidified material is crushed by at least two-stage crushing to obtain solid particles.

[0034] In one embodiment, before crushing the solidified material to obtain solid particles, the polysulfone polymerization liquid treatment method further comprises the steps of: mixing the solidified material and the remaining circulating liquid to obtain a mixed liquid;

[0035] The solidified material is crushed to obtain solid particles, including: crushing the solidified material in the mixed liquid to obtain solid particles in the mixed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] FIG. 1 is a schematic diagram of a structural module of an embodiment of a polysulfone polymerization liquid treatment system described in the present application.

[0038] FIG. 2 is a schematic diagram of another embodiment of the polysulfone polymerization liquid processing system of the present application.

[0039] FIG. 3 is a schematic flow chart of the first embodiment of the polysulfone polymerization liquid treatment method described in the present application.

[0040] FIG. 4 is a schematic flow chart of a second embodiment of the method for treating a polysulfone polymerization liquid according to the present application.

[0041] FIG. 5 is a schematic flow chart of a third embodiment of the method for treating a polysulfone polymerization liquid according to the present application.

[0042] Figure numerals: 1. high-speed sprayer for polysulfone polymerization liquid; 2. circulating liquid nozzle; 3. tank body; 4. multi-stage pulverizer; 5. filter; 6. powder receiver; 7. filtrate receiver; 8. circulating filtrate booster pump; 9. mixer; 10. high-speed spray head; 11. polymerization metering liquid. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0048] The present application discloses a polysulfone polymerization liquid processing system and method, which includes some or all of the technical features of the following embodiments; that is, the polysulfone polymerization liquid processing system includes some or all of the following structures. In one embodiment of the present application, a polysulfone polymerization liquid processing system includes a polysulfone polymerization liquid high-speed sprayer, a circulating liquid nozzle, a tank body, a filter, a powder receiver, a filtrate receiver and a circulating filtrate booster pump; the polysulfone polymerization liquid high-speed sprayer is used to spray droplets of polysulfone polymerization liquid; the circulating liquid nozzle is used to spray circulating liquid to form a liquid barrier, so that the droplets contact the liquid barrier to form a solid; the tank body is used to contain the solid and the remaining circulating liquid; the filter is used to filter the solid and the remaining circulating liquid; the powder receiver is used to receive the filtered solid; the filtrate receiver is used to receive the filtered circulating liquid; the circulating filtrate booster pump is used to pump the circulating liquid in the filtrate receiver to the circulating liquid nozzle. The polysulfone polymerization liquid processing system is conducive to realizing continuous and efficient production of polysulfone by using a polysulfone polymerization liquid high-speed sprayer in combination with a circulating liquid nozzle, a filtrate receiver and a circulating filtrate booster pump, and is combined with a filter and a powder receiver to further improve production efficiency and reduce energy consumption. Therefore, on the one hand, it is conducive to efficiently and continuously converting polysulfone polymerization liquid into solid, on the other hand, it realizes the recycling of liquid and reduces production costs, and on the other hand, it has the advantages of simple structure, stable operation, high processing efficiency, etc. The polysulfone polymerization liquid processing system and method are described in detail below in conjunction with Figures 1 to 5.

[0049] In one embodiment, the present application provides a polysulfone polymerization liquid processing system, which includes a polysulfone polymerization liquid high-speed sprayer, a circulating liquid nozzle, a tank body, a filter, a powder receiver, a filtrate receiver and a circulating filtrate booster pump; illustratively, the polysulfone polymerization liquid high-speed sprayer and the circulating liquid nozzle are arranged in the tank body, and the filter, the powder receiver, the filtrate receiver and the circulating filtrate booster pump are arranged outside the tank body. Exemplarily, the polysulfone polymerization liquid high-speed sprayer is provided with a high-speed spray head, which is arranged in the tank body, and in the direction of gravity, the high-speed spray head is located above the circulating liquid nozzle, or the high-speed spray head is not lower than the liquid barrier formed by the circulating liquid nozzle; the rest of the polysulfone polymerization liquid high-speed sprayer can be arranged in the tank body or outside the tank body. In one embodiment, the tank body is provided with an overflow port for conveying the solidified material and the remaining circulating liquid to the pulverizer from the overflow port. In one embodiment, the overflow port is located in the middle of the tank body; the polysulfone polymerization liquid high-speed sprayer and the circulating liquid nozzle are located above the overflow port.

[0050] In one embodiment, the polysulfone polymerization liquid high-speed sprayer is used to spray droplets of polysulfone polymerization liquid; the specific method of obtaining and conveying the polysulfone polymerization liquid belongs to the traditional technology, and the embodiments of the present application do not make improvements on this. Exemplarily, the polysulfone polymerization liquid high-speed sprayer sprays droplets of the polysulfone polymerization liquid in a rotating manner, and the rotation speed is 500rpm to 5000rpm, or the rotation speed can also be 500rpm to 50000rpm. That is, the high-speed spray head to be described below sprays droplets of the polysulfone polymerization liquid in a rotating manner, and the rotation speed is 500rpm to 5000rpm, or the rotation speed can also be 500rpm to 50000rpm. In other embodiments, the polysulfone polymerization liquid high-speed sprayer or its high-speed spray head sprays droplets of polysulfone polymerization liquid at a spray rate of 0.5 liters / minute to 100 liters / minute or 2kg / minute to 10kg / minute, so it is called a polysulfone polymerization liquid high-speed sprayer or a high-speed spray head.

[0051] Exemplarily, the polysulfone polymerization liquid high-speed sprayer is used to spray droplets of polysulfone polymerization liquid in a metered manner, that is, the polysulfone polymerization liquid high-speed sprayer is used to spray droplets of the metered polysulfone polymerization liquid to ensure that the liquid barrier formed by the circulating liquid nozzle can fully contact the droplets, thereby solidifying to form the target solidified material. Exemplarily, metering includes but is not limited to quantitative polysulfone polymerization liquid by mass or volume, and quantitatively spraying polysulfone polymerization liquid for a certain period of time. As an example, the polysulfone polymerization liquid high-speed sprayer sprays the metered polysulfone polymerization liquid through a high-speed nozzle, spraying 0.5 liters to 10 liters each time, or spraying 2kg to 10kg each time, or a spraying rate of 0.5 liters / minute to 100 liters / minute, or a spraying rate of 2kg / minute to 10kg / minute. The rest of the embodiments are analogous and will not be repeated.

[0052] In one embodiment, the circulating liquid nozzle is used to spray the circulating liquid to form a liquid barrier, so that the liquid droplets contact the liquid barrier to form a solid. The circulating liquid serves as a precipitant for the polysulfone polymerization liquid, and the liquid droplets of the polysulfone polymerization liquid contact the liquid barrier formed by the circulating liquid, so that the polysulfone can be separated from the polysulfone polymerization liquid, that is, the polymer solution.

[0053] Specifically, the ideal liquid barrier is a plane, and the plane is located below the droplets sprayed by the polysulfone polymerization liquid high-speed sprayer, but under the action of gravity, the shape of the liquid barrier has a combination surface formed by a parabola, that is, the liquid barrier is inclined downward, and the rate of the circulating liquid nozzle spraying liquid, that is, the circulating liquid, can form a water curtain to completely block the droplets sprayed by the polysulfone polymerization liquid high-speed sprayer. Exemplarily, the circulating liquid nozzle has a ring-shaped, such as a circular, distributed nozzle, or the circulating liquid nozzle has two opposing rows of nozzles, so that all the droplets sprayed by the polysulfone polymerization liquid high-speed sprayer are received by the liquid barrier, so that all the droplets sprayed by the polysulfone polymerization liquid high-speed sprayer contact the liquid barrier formed by the circulating liquid, thereby precipitating to form the solidified material.

[0054] In one embodiment, the tank is used to contain the solidified material and the remaining circulating liquid; as an example, in an open environment, the tank can be closed, the polysulfone polymerization liquid high-speed sprayer or its high-speed spray head is arranged in the tank, and the circulating liquid spray head is also arranged in the tank; in a closed environment, the tank can be open, in which case it is sufficient for the solidified material and the remaining circulating liquid to fall into the tank. Such a design, in conjunction with a filter, a powder receiver, a filtrate receiver and a circulating filtrate booster pump, is conducive to the continuous and efficient production of polysulfone, and the combination of a filter and a powder receiver further improves production efficiency and is also conducive to reducing energy consumption.

[0055] In one embodiment, the filter is used to filter the solidified material and the remaining circulating liquid; after filtering the solidified material or the solid particles to be described below, a filter cake or a block similar to a filter cake can usually be obtained. Although it is called the solidified material or the solid particles, those skilled in the art can understand that the filter cake or the block similar to the filter cake must contain a certain amount of liquid, such as the circulating liquid, but the liquid content is greatly reduced compared to before filtration.

[0056] In one embodiment, the powder receiver is used to receive the solidified material after filtration; in this way, the polysulfone obtained by converting the polysulfone polymerization liquid into a solid can be easily taken out. Exemplarily, the filter is a filter press, and the polysulfone polymerization liquid processing system also includes a porous tray, a transfer cart and a clamping member. The porous tray is arranged in the filter, and the filter separates the solidified material and the remaining circulating liquid by pressure, so that the remaining circulating liquid flows from the porous tray into the filtrate receiver, and the remaining solidified material is transferred to the transfer cart together with the porous tray under the action of the clamping member.

[0057] In one embodiment, the filtrate receiver is used to receive the circulating liquid after filtration; the circulating filtrate booster pump is used to pump the circulating liquid in the filtrate receiver to the circulating liquid nozzle. As an example, the circulating filtrate booster pump increases the pressure to 0.2MPA to 1.0MPA. Such a design has the advantages of simple structure, stable operation, high processing efficiency, etc., which is conducive to the recycling of liquid, reduces production costs, and is conducive to the efficient and continuous conversion of polysulfone polymerization liquid into solid, thereby realizing the continuous and efficient production of polysulfone, improving production efficiency, and reducing energy consumption.

[0058] In one embodiment, the polysulfone polymerization liquid processing system further includes a pulverizer, which is used to pulverize the solidified material to obtain solid particles; and the filter is used to filter the solid particles and the remaining circulating liquid. Exemplarily, the pulverizer is arranged between the tank body and the filter, that is, the tank body is connected to the filter through the pulverizer. It can be understood that the pulverizer is used to pulverize the solidified material containing the circulating liquid, that is, the pulverizer is used to pulverize the mixture of the solidified material and the remaining circulating liquid; for the embodiment of the mixed liquid to be described below, the pulverizer is used to pulverize the solidified material in the mixed liquid. In other embodiments, the pulverizer is arranged between the filter and the powder receiver, that is, the filter is connected to the powder receiver through the pulverizer. The pulverization target of the pulverizer is set according to demand. As an example, the pulverizer is used to pulverize the solidified material to obtain solid particles with a sieve size of 10 mesh to 500 mesh. As an example, the pulverizer is used to pulverize the solidified material to obtain solid particles with a sieve size of 100 mesh to 200 mesh. The specific particle size can be adjusted according to the polymer.

[0059] In one embodiment, the pulverizer is a multi-stage pulverizer, which is used to pulverize the solidified material to obtain solid particles by at least two-stage pulverization. The pulverizer with two-stage pulverization can be called a two-stage pulverizer, and the pulverizer with three-stage pulverization can be called a three-stage pulverizer, and so on, collectively referred to as a multi-stage pulverizer. The multi-stage pulverizer cooperates with the solidified material and the remaining circulating fluid, or cooperates with the mixing fluid, on the one hand, to obtain finer and more uniform solid particles, and on the other hand, due to the presence of the circulating fluid, it plays a certain lubricating and protective role, which is conducive to protecting the pulverizer.

[0060] For the embodiment with the pulverizer, the polysulfone polymerization liquid processing system can also be called a polysulfone polymerization liquid high-speed spray and pulverization processing system. As a spray and pulverization system for processing polysulfone polymerization liquid, the polysulfone polymerization liquid can be converted into a powdered solid. In this way, the system can efficiently and continuously convert the polysulfone polymerization liquid into a powdered solid, while realizing the recycling of the liquid.

[0061] In one embodiment, the polysulfone polymerization liquid processing system further includes a mixer, which is used to mix the solidified material and the remaining circulating liquid to obtain a mixed liquid; the pulverizer is used to pulverize the solidified material in the mixed liquid to obtain solid particles in the mixed liquid. Exemplarily, the mixer is a stirrer, which is used to achieve a mixing effect by stirring, so that all the materials in the tank flow, that is, the solidified material and the remaining circulating liquid have fluidity, so as to flow into the pulverizer, and avoid the solidified material from precipitating and accumulating at the bottom of the tank body. As an example, the stirrer achieves mixing of the solidified material and the remaining circulating liquid by high-speed stirring. Since the mixed liquid is in an emulsified state, the mixer can also be called a high-speed emulsifier. Such a design can prevent the accumulation of sediment at the bottom of the tank body, and can achieve a better pulverization effect in the subsequent pulverization process.

[0062] For the embodiments with an overflow port, in one of the embodiments, the tank body is provided with an overflow port for conveying the mixed liquid to the pulverizer from the overflow port. In one of the embodiments, the overflow port is located in the middle of the tank body; the polysulfone polymerization liquid high-speed sprayer and the circulating liquid nozzle are located above the overflow port. In order to prevent the solidified material from settling and accumulating at the bottom of the tank body, illustratively, the bottom of the tank body has a convergent shape, such as forming a truncated cone or a prism that is larger at the top and smaller at the bottom, and the tank body is provided with an opening at its bottom, and a bottom cover for closing the opening, and the bottom cover is detachably and sealedly mounted on the bottom of the tank body, and is used to clean the solidified material that has settled and accumulated in the open state.

[0063] In one embodiment, a polysulfone polymerization liquid processing system comprises:

[0064] The polysulfone polymerization liquid high-speed sprayer is used for spraying the metered polysulfone polymerization liquid through a high-speed nozzle to form uniform droplets.

[0065] A circulating liquid nozzle is used to receive droplets sprayed from a high-speed nozzle and form a liquid barrier so that the droplets solidify into powder particles thereon; as an example, the liquid barrier generated by the circulating liquid nozzle can effectively receive the droplets and control the solidification speed to ensure the quality and consistency of the powder particles.

[0066] The tank body with an overflow port is used to collect solidified powder particles and unsolidified circulating liquid and provide a stirring and homogenizing environment; as an example, the tank body with an overflow port also includes a stirring device to ensure sufficient mixing and homogenization of the powder and the circulating liquid.

[0067] A multi-stage pulverizer is used to further pulverize and homogenize the mixture; as an example, the multi-stage pulverizer is composed of a plurality of pulverizing units, each pulverizing unit has a different pulverizing particle size, so as to gradually pulverize the mixture.

[0068] The filter is used to filter the mixture and separate the solid powder and the liquid; as an example, the filter includes one or more layers of filter screens to separate the solid powder and the liquid. The filter may also include a vibrating screen with automatic feeding, a centrifuge and other equipment that can achieve filtering.

[0069] A powder receiver, used to receive the filtered solid powder, i.e., filter cake;

[0070] A filtrate receiver, used to collect the filtered liquid, i.e., the filtrate;

[0071] The circulating filtrate booster pump is used to boost the pressure of the filtrate and send it back to the circulating liquid nozzle to form a new liquid barrier; as an example, the circulating filtrate booster pump has an adjustable pressure setting to adapt to different treatment requirements.

[0072] The mixer, as a high-speed emulsifier, is used to stir the powder and the circulating liquid in the tank to form a uniform mixture; as an example, the high-speed emulsifier is equipped with multiple stirring paddles or stirring heads to ensure uniform mixing of the powder and the liquid.

[0073] A high-speed spray head, as a high-speed spray head of the polysulfone polymerization liquid high-speed sprayer, is used to spray the polysulfone polymerization liquid to form droplets. As an example, the high-speed spray head is configured to spray the polysulfone polymerization liquid at a specified pressure to ensure the formation of uniform droplets. Exemplarily, the high-speed spray head has an adjustable spray angle and spray amount to optimize the formation of droplets and the spray effect.

[0074] In one embodiment, a polysulfone polymerization liquid processing system is shown in Figure 1, which includes a polysulfone polymerization liquid high-speed sprayer 1, a circulating liquid nozzle 2, a tank body 3, a filter 5, a powder receiver 6, a filtrate receiver 7 and a circulating filtrate booster pump 8; the polysulfone polymerization liquid high-speed sprayer 1 is used to spray droplets of polysulfone polymerization liquid; the circulating liquid nozzle 2 is used to spray circulating liquid to form a liquid barrier, so that the droplets contact the liquid barrier to form a solid; the tank body 3 is used to accommodate the solid and the remaining circulating liquid; the filter 5 is used to filter the solid and the remaining circulating liquid; the powder receiver 6 is used to receive the filtered solid; the filtrate receiver 7 is used to receive the filtered circulating liquid; the circulating filtrate booster pump 8 is used to pump the circulating liquid in the filtrate receiver 7 to the circulating liquid nozzle.

[0075] The circulating liquid nozzle 2 is used to form a liquid barrier, receive the liquid droplets sprayed from the high-speed nozzle, and solidify them into powder particles.

[0076] In one embodiment, a polysulfone polymerization liquid processing system is shown in Figure 2, which includes a polysulfone polymerization liquid high-speed sprayer 1, a circulating liquid nozzle 2, a tank body 3, a multi-stage pulverizer 4, a filter 5, a powder receiver 6, a filtrate receiver 7, a circulating filtrate booster pump 8 and a mixer 9; the polysulfone polymerization liquid high-speed sprayer 1 is used to spray out polymerization metering liquid 11, that is, droplets of the metered polysulfone polymerization liquid; the polysulfone polymerization liquid high-speed sprayer 1 is provided with a high-speed spray head 10 for spraying droplets, and the high-speed spray head 10, the circulating liquid nozzle 2 and the mixer 9 are all arranged in the tank body 3.

[0077] The circulating liquid nozzle 2 is used to spray the circulating liquid to form a liquid barrier, so that the liquid droplets contact the liquid barrier to form a solidified object; the tank body 3 is used to contain the solidified object and the remaining circulating liquid; the mixer 9 is used to mix the solidified object and the remaining circulating liquid to obtain a mixed liquid; the tank body 3 is provided with an overflow port, through which the mixed liquid is transported to the multi-stage pulverizer 4. The multi-stage pulverizer 4 is used to perform multi-stage pulverization on the solidified object in the mixed liquid.

[0078] The filter 5 is used to filter the solidified material and the remaining circulating liquid; the powder receiver 6 is used to receive the filtered solidified material; the filtrate receiver 7 is used to receive the filtered circulating liquid; the circulating filtrate booster pump 8 is used to pump the circulating liquid in the filtrate receiver 7 to the circulating liquid nozzle 2. The filter 5 is used to filter the mixture and separate the filter cake and the filtrate.

[0079] Such a design, on the one hand, is conducive to the efficient and continuous conversion of polysulfone polymerization liquid into solid, and on the other hand, it realizes the recycling of circulating liquid, reduces production costs and improves production efficiency. On the other hand, the system has a simple structure, stable operation, high processing efficiency, and can effectively reduce energy consumption and costs.

[0080] Based on the polysulfone polymerization liquid treatment device, in one embodiment, the present application also provides a polysulfone polymerization liquid treatment method, which is implemented based on the polysulfone polymerization liquid treatment device of any embodiment, that is, the polysulfone polymerization liquid treatment method adopts the polysulfone polymerization liquid treatment device of any embodiment. Since the polysulfone polymerization liquid treatment device of any embodiment is adopted, the polysulfone polymerization liquid treatment method also has the beneficial technical effects of the polysulfone polymerization liquid treatment device, which will not be described in detail here.

[0081] In one embodiment, a method for treating polysulfone polymerization liquid is shown in FIG3 , which comprises the following steps: a high-speed sprayer for polysulfone polymerization liquid sprays droplets of polysulfone polymerization liquid; a circulating liquid nozzle sprays circulating liquid to form a liquid barrier; the droplets contact the liquid barrier to form a solid; the solid and the remaining circulating liquid are filtered; the filtered solid is received; the filtered circulating liquid is received and pumped to the circulating liquid nozzle. Such a design is conducive to the continuous and efficient production of polysulfone, improves production efficiency, and is also conducive to reducing energy consumption. Therefore, on the one hand, it is conducive to the efficient and continuous conversion of polysulfone polymerization liquid into solid, on the other hand, it realizes the recycling of liquid and reduces production costs, and on the other hand, it has the advantages of simple structure, stable operation, and high processing efficiency.

[0082] In one embodiment, before filtering the solidified material and the remaining circulating liquid, the polysulfone polymerization liquid treatment method further includes the steps of: crushing the solidified material to obtain solid particles; filtering the solidified material and the remaining circulating liquid, including: filtering the solid particles and the remaining circulating liquid. In one embodiment, a polysulfone polymerization liquid treatment method is shown in FIG4, which includes the steps of: a polysulfone polymerization liquid high-speed sprayer sprays droplets of polysulfone polymerization liquid; a circulating liquid nozzle sprays circulating liquid to form a liquid barrier; the droplets contact the liquid barrier to form solidified material; crushing the solidified material to obtain solid particles; filtering the solid particles and the remaining circulating liquid; receiving the filtered solid particles; receiving the filtered circulating liquid and pumping it to the circulating liquid nozzle. In one embodiment, the solidified material is crushed to obtain solid particles by at least two-stage crushing.

[0083] In one embodiment, before crushing the solidified material to obtain solid particles, the polysulfone polymerization liquid treatment method further includes the steps of: mixing the solidified material and the remaining circulating liquid to obtain a mixed liquid; crushing the solidified material to obtain solid particles, including: crushing the solidified material in the mixed liquid to obtain solid particles in the mixed liquid. In one embodiment, a polysulfone polymerization liquid treatment method is shown in FIG5, which includes the steps of: a polysulfone polymerization liquid high-speed sprayer sprays droplets of polysulfone polymerization liquid; a circulating liquid nozzle sprays circulating liquid to form a liquid barrier; the droplets contact the liquid barrier to form solidified material; mixing the solidified material and the remaining circulating liquid to obtain a mixed liquid; crushing the solidified material in the mixed liquid to obtain solid particles in the mixed liquid; filtering the solid particles and the remaining circulating liquid; receiving the filtered solid particles; receiving the filtered circulating liquid and pumping it to the circulating liquid nozzle. The remaining embodiments are similar and will not be described in detail.

[0084] In one embodiment, a method for treating a polysulfone polymerization solution comprises the steps of:

[0085] S10, measuring the polysulfone polymerization liquid and sending it into the high-speed nozzle of the polysulfone polymerization liquid high-speed sprayer.

[0086] S20, polysulfone polymerization liquid is sprayed out through a high-speed nozzle to form uniform droplets.

[0087] S30, the liquid droplets are sprayed onto the liquid barrier formed by the circulating liquid nozzle and quickly solidified into powder particles.

[0088] S40, powder particles and unsolidified circulating fluid fall into the tank with an overflow port.

[0089] S50: In the tank, a high-speed emulsifier is used to stir the powder and the circulating liquid to form a uniform mixture of powder and liquid.

[0090] S60: The mixture enters a multi-stage pulverizer through an overflow port for further homogenization and pulverization.

[0091] S70, the crushed mixture enters the filter for filtration, the filter cake enters the powder receiver, i.e., the coarse powder receiver, and the filtrate enters the filtrate receiver.

[0092] S80. The filtrate collected from the filtrate receiver is pumped back to the circulating liquid nozzle through the booster pump to form a new liquid barrier.

[0093] With such a design, the polysulfone polymerization liquid treatment method can efficiently convert the polysulfone polymerization liquid into a powdered solid and realize the recycling of the liquid.

[0094] In one embodiment, a polysulfone polymerization liquid treatment method using the polysulfone polymerization liquid treatment system comprises the following steps: the polysulfone polymerization liquid is transported to the high-speed nozzle of the polymerization liquid high-speed sprayer after metering to spray out to form uniform droplets, the droplets sprayed at high speed are sprayed onto the liquid barrier formed by the circulating liquid nozzle, i.e., the circulating liquid barrier, and solidified into powder particles, the powder particles and the circulating liquid fall into a tank with an overflow port, and are stirred and flowed by a mixer such as a high-speed emulsification head to form a mixture of powder and circulating liquid, i.e., the mixed liquid; the mixture enters a multi-stage pulverizer through the overflow port of the tank body for pulverization, and after further homogenization, enters a filter for filtration, and the filter cake enters a powder receiver. The filtrate enters a filtrate receiver, is collected and pumped to the circulating liquid nozzle by a circulating filtrate booster pump, and continues to spray out to form a circulating liquid barrier.

[0095] In one embodiment, a method for treating a polysulfone polymerization solution comprises the steps of:

[0096] S10, polymerizing liquid metering: First, the polysulfone polymerizing liquid is metered and prepared to be sent to the polysulfone polymerizing liquid high-speed sprayer.

[0097] S20, spraying to form droplets: the polysulfone polymer solution is sprayed out through a high-speed nozzle to form uniform droplets.

[0098] S30, spray solidification: These droplets are sprayed onto the circulating liquid barrier under the action of high-speed spray and solidified into powder particles.

[0099] S40, collection of particles and circulating liquid: the solidified particles and the unsolidified circulating liquid fall together into the tank with the overflow port.

[0100] S50, mixing and stirring: In the tank, the particles and circulating liquid are stirred by a high-speed emulsifier to form a uniform mixture of powder and circulating liquid.

[0101] S60, crushing of the mixture: the mixture enters the multi-stage crusher through the overflow port of the tank body, where it is further homogenized.

[0102] S70, Filtration: The homogenized mixture enters the filter for filtration, the filter cake is sent to a powder receiver, i.e., a coarse powder receiver, and the filtrate enters a filtrate receiver.

[0103] S80. Recycling of circulating liquid: The filtrate in the filtrate receiver is pumped back to the circulating liquid nozzle through the booster pump to form a new circulating liquid barrier.

[0104] Through these steps, the polysulfone polymerization liquid processing system and method realize the spraying, crushing, filtering and recycling of the polymerization liquid.

[0105] It should be noted that other embodiments of the present application also include a polysulfone polymerization liquid processing system and method that can be implemented by combining the technical features in the above embodiments.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A polysulfone polymerization liquid processing system, characterized in that: It includes a polysulfone polymerization liquid high-speed sprayer, a circulating liquid nozzle, a tank, a filter, a powder receiver, a filtrate receiver and a circulating filtrate booster pump; The polysulfone polymerization liquid high-speed sprayer is used to spray droplets of the polysulfone polymerization liquid; The circulating liquid nozzle is used to spray the circulating liquid to form a liquid barrier, so that the liquid droplets contact the liquid barrier to form a solidified object; The tank body is used to contain the solidified material and the remaining circulating fluid; The filter is used to filter the solidified material and the remaining circulating fluid; The powder receiver is used to receive the solidified material after filtering; The filtrate receiver is used to receive the circulating liquid after filtering; The circulating filtrate booster pump is used to pump the circulating liquid in the filtrate receiver to the circulating liquid nozzle.

2. The polysulfone polymerization liquid processing system according to claim 1, characterized in that: It also includes a pulverizer, which is used to pulverize the solidified material to obtain solid particles; The filter is used to filter the solid particles and the remaining circulating liquid.

3. The polysulfone polymerization liquid processing system according to claim 2, characterized in that: The pulverizer is a multi-stage pulverizer, which is used to pulverize the solidified material to obtain solid particles by at least two-stage pulverization.

4. The polysulfone polymerization liquid processing system according to claim 2, characterized in that: It also includes a mixer, which is used to mix the solidified material and the remaining circulating liquid to obtain a mixed liquid; The pulverizer is used to pulverize the solidified material in the mixed liquid to obtain solid particles in the mixed liquid.

5. The polysulfone polymerization liquid processing system according to claim 4, characterized in that: The tank body is provided with an overflow port, which is used to transport the mixed liquid to the pulverizer from the overflow port.

6. The polysulfone polymerization liquid processing system according to claim 5, characterized in that: The overflow port is located in the middle of the tank body; The polysulfone polymerization liquid high-speed sprayer and the circulating liquid nozzle are located above the overflow port.

7. A method for treating a polysulfone polymerization liquid, characterized in that: Includes steps: The polysulfone polymerization liquid high-speed sprayer sprays out droplets of the polysulfone polymerization liquid; The circulating liquid spray head sprays the circulating liquid to form a liquid barrier; The liquid droplet contacts the liquid barrier to form a solidified object; filtering the solidified material and the remaining circulating fluid; receiving the filtered solidified material; The filtered circulating liquid is received and pumped to the circulating liquid nozzle.

8. The method for treating polysulfone polymerization liquid according to claim 7, characterized in that: Before filtering the solidified material and the remaining circulating liquid, the polysulfone polymerization liquid treatment method further comprises the steps of: crushing the solidified material to obtain solid particles; Filtering the solidified material and the remaining circulating fluid includes filtering the solid particles and the remaining circulating fluid.

9. The method for treating polysulfone polymerization liquid according to claim 8, characterized in that: The solidified material is crushed by at least two-stage crushing to obtain solid particles.

10. The method for treating polysulfone polymerization liquid according to claim 8, characterized in that: Before crushing the solidified material to obtain solid particles, the polysulfone polymerization liquid treatment method further comprises the steps of: mixing the solidified material and the remaining circulating liquid to obtain a mixed liquid; The solidified material is crushed to obtain solid particles, including: crushing the solidified material in the mixed liquid to obtain solid particles in the mixed liquid.

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