High-viscosity system devolatilization device

Abstract

The utility model relates to a high-viscosity system devolatilization device which comprises a vertically arranged devolatilization tank, a cap-shaped distribution disc is arranged in the devolatilization tank, the cap-shaped distribution disc is of a three-dimensional structure with the diameter of the outer wall gradually increasing from top to bottom, a gap is formed between the bottom of the cap-shaped distribution disc and the inner wall of the devolatilization tank, and a liquid passing channel is formed between the bottom of the cap-shaped distribution disc and the inner wall of the devolatilization tank; at least one volatilization outlet is formed in the upper part of the devolatilization tank and is positioned above the cap-shaped distribution plate; a stirrer is arranged in the lower part of the devolatilization tank and is positioned below the cap-shaped distribution plate; a baffle plate is arranged in the devolatilization tank and corresponds to each volatilization outlet; a plurality of air holes are formed in the baffle plate; the outlet end of the feeding pipeline extends into the devolatilization tank and is arranged downwards to directly face the top end of the cap-shaped distribution disc. The high-viscosity system devolatilization device disclosed by the utility model can effectively improve the devolatilization efficiency and reduce volatile substances in a product.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a high-viscosity system devolatilization device. Background Art

[0002] A devolatilizer is a device that efficiently utilizes heat energy. It is used to quickly evaporate a liquid into steam and further condense the steam back into a liquid state. This technology is widely used in various industrial fields, including petroleum refining, chemical industry, food processing, etc. Traditional devolatilizers usually use a combination of a heater and a condenser. The heater heats the liquid to above its saturation temperature to turn it into saturated steam; the saturated steam is then transferred to the condenser and restored to a liquid through cooling and compression. However, traditional methods have problems such as energy loss, large footprint, and complex operation. In order to overcome these problems, some existing patents have improved the devolatilizer technology, but the following shortcomings still exist:

[0003] (1) Low evaporation efficiency: The existing devolatilization tank has the problem of low evaporation efficiency, which leads to energy waste and reduced production efficiency.

[0004] (2) High energy consumption: Existing devolatilizers consume relatively high energy during the evaporation process, resulting in energy waste and adverse effects on the environment.

[0005] (3) Unstable product quality: When processing liquids, existing devolatilization tanks may have problems such as unstable temperature control and incomplete separation of substances, resulting in unstable product quality.

[0006] (4) Complex equipment and high cost: Existing devolatilizers may be complex in structure, requiring a large number of parts and complex operating procedures, resulting in high equipment manufacturing and maintenance costs.

[0007] (5) Inconvenient for real-time monitoring and control: The existing monitoring and control means of the devolatilizer may be relatively simple, not intelligent and automated enough, and it is difficult to monitor and control the temperature, pressure, flow rate and other parameters of the liquid in real time.

[0008] (6) Equipment safety and stability: Existing devolatilizers may have some safety hazards, such as excessive temperature and pressure, leakage, etc., which pose certain risks during operation.

[0009] (7) Limitation of liquid processing range: Existing devolatilizers may have certain limitations in processing liquids of different properties and types and cannot adapt to a wide range of application requirements.

[0010] (8) Poor operational flexibility: Existing devolatilizers may be complex to operate and inflexible, making it difficult to adapt to the needs of different production processes and working conditions. Utility Model Content

[0011] The purpose of the utility model is to provide a high-viscosity system devolatilization device, which can effectively improve the devolatilization efficiency and reduce the volatile matter in the product.

[0012] The object of the present utility model is achieved as follows: a devolatilization device for a high-viscosity system comprises: a vertically arranged devolatilization tank, a cap-shaped distribution plate provided in the devolatilization tank, the cap-shaped distribution plate being a three-dimensional structure with an outer wall diameter gradually increasing from top to bottom, a gap being formed between the bottom of the cap-shaped distribution plate and the inner wall of the devolatilization tank to form a liquid passage; at least one volatilization outlet is provided in the upper portion of the devolatilization tank and above the cap-shaped distribution plate; an agitator is provided in the lower portion of the devolatilization tank and below the cap-shaped distribution plate; a baffle is provided in the devolatilization tank at a position corresponding to each volatilization outlet, the baffle being provided with a plurality of air holes; and a feed pipeline, the outlet end of which extends into the devolatilization tank and is arranged downwardly facing the top end of the cap-shaped distribution plate.

[0013] In a preferred embodiment of the present invention, the hat-shaped distribution plate is a conical structure, or the outer wall of the hat-shaped distribution plate is a curved surface structure.

[0014] In a preferred embodiment of the present invention, the volatilization outlet is located on the side wall of the devolatilization tank, and the baffle is a conical cap with an opening at the bottom, and the bottom opening is arranged toward the volatilization outlet.

[0015] In a preferred embodiment of the present invention, the volatilization outlet is located on the top surface of the devolatilization tank, and the baffle is a conical cap with an opening at the bottom, and the bottom opening is arranged downward.

[0016] In a preferred embodiment of the present invention, the agitator includes a stirring shaft and a plurality of blades circumferentially spaced apart on the stirring shaft, wherein the blades are flat plate structures and the plate surfaces are arranged vertically.

[0017] In a preferred embodiment of the present invention, the blade is a triangular plate, one side of the triangular plate is connected to the stirring shaft, and the vertex opposite to the side can extend upward from the top of the stirring shaft.

[0018] In a preferred embodiment of the present invention, a driving member is provided at the bottom of the devolatilization tank, and the driving member is connected to the stirring shaft and can drive the stirring shaft to rotate.

[0019] In a preferred embodiment of the present invention, a melt pump and a heat exchanger are sequentially provided on the feed pipeline along the material conveying direction.

[0020] In a preferred embodiment of the present invention, a heating jacket is provided on the outer wall of the devolatilizer, and an insulation jacket is provided on the feed pipeline. Medium flow channels are formed in the side walls of the heating jacket and the insulation jacket for introducing heat-conducting medium.

[0021] In a preferred embodiment of the present invention, a temperature sensor and a pressure measuring instrument are further provided in the devolatilizer, and a liquid level detection instrument is provided at the bottom of the devolatilizer; a flow regulating valve is also provided at the inlet of the medium flow channel of the heating jacket; the high-viscosity system devolatilization device also includes a control device, which is electrically connected to the melt pump, heat exchanger, temperature sensor, pressure measuring instrument, liquid level detection instrument and flow regulating valve.

[0022] In a preferred embodiment of the present invention, a sight glass is provided on the top surface of the devolatilizer.

[0023] In a preferred embodiment of the present invention, the lower portion of the devolatilizer is a tapered structure with a diameter that gradually decreases downward, and the agitator is disposed in the tapered structure.

[0024] In a preferred embodiment of the present invention, a holding box is provided at the bottom of the devolatilizer, and a melt outlet is provided on the holding box; an output pump is provided in the holding box, and the inlet end of the output pump is connected to the bottom discharge port of the devolatilizer through a corresponding pipeline, and the outlet end of the output pump is connected to the melt outlet through a corresponding pipeline.

[0025] In a preferred embodiment of the present invention, the high-viscosity system devolatilization device further includes an outlet pipeline and a recovery tank. Both ends of the outlet pipeline are connected to the volatilization outlet and the recovery tank respectively. A condenser is also provided on the outlet pipeline.

[0026] As described above, the high-viscosity system devolatilization device of the present invention utilizes a cap-shaped distribution plate to increase the contact area between the melt and the high-temperature chamber of the tank body, so that the residual volatiles in the high-viscosity system melt can be further removed, effectively reducing the volatile substances in the product. At the same time, the melt in the melt pool is stirred by an agitator to force the melt surface to be renewed, which can effectively remove volatiles and improve product quality. By arranging a baffle with a porous structure at the volatilization outlet, foam entrainment can be blocked; and then, through the cooperation of the cap-shaped distribution plate, the agitator and the baffle, the volatiles in the high-viscosity system melt can be better removed, thereby improving the devolatilization efficiency of the device and effectively improving the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0028] Figure 1 : It is a structural schematic diagram of the high viscosity system devolatilization device provided by the utility model.

[0029] Description of Figure Numbers:

[0030] 1. Devolatilization tank; 11. Melt pool; 12. Volatilization outlet; 13. Holding box; 14. Melt outlet; 15. Heating jacket; 151. First heat medium inlet; 152. First heat medium outlet; 16. Sight glass;

[0031] 2. Feed pipeline; 21. Melt pump; 22. Heat exchanger; 221. Third heat medium inlet; 222. Third heat medium outlet; 23. Insulation jacket; 231. Second heat medium inlet; 232. Second heat medium outlet;

[0032] 3. Hat-type distribution plate;

[0033] 4. Agitator; 41. Agitator shaft; 42. Paddle; 43. Agitator motor;

[0034] 5. Baffle;

[0035] 6. Liquid level gauge. DETAILED DESCRIPTION

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0037] like Figure 1 As shown, the present application provides a high-viscosity system devolatilization device, comprising:

[0038] A vertically arranged devolatilizer 1 is provided with a cap-shaped distribution plate 3 therein. The cap-shaped distribution plate 3 is a three-dimensional structure with an outer wall diameter gradually increasing from top to bottom. A gap is formed between the bottom of the cap-shaped distribution plate 3 and the inner wall of the devolatilizer 1, forming a liquid passage. At least one volatilization outlet 12 is provided in the upper portion of the devolatilizer 1, above the cap-shaped distribution plate 3. An agitator 4 is provided in the lower portion of the devolatilizer 1, below the cap-shaped distribution plate 3. A baffle 5 is provided in the devolatilizer 1, corresponding to each volatilization outlet 12, and the baffle 5 has a plurality of air holes.

[0039] The feed pipeline 2 has its outlet extending into the devolatilizer 1 and facing downwards towards the top of the hat-shaped distribution plate 3 .

[0040] The lower part of the devolatilization tank 1 constitutes a melt pool 11. During use, the melt enters the devolatilization tank 1 through the feed pipe 2, flows out through the outlet end of the feed pipe 2, and is dispersed and spread around under the action of the cap-shaped distribution plate 3. The melt flows slowly on the cap-shaped distribution plate 3. The function of the cap-shaped distribution plate 3 is to increase the contact area between the melt and the high-temperature chamber in the tank, prolong the exposure time of the melt in the cavity, so that the volatile matter can be fully extracted by the high temperature of the devolatilization, and then the melt falls into the melt pool 11 at the bottom of the tank. In the melt pool 11, the agitator 4 rotates, which can force the surface of the melt to renew, break the filamentous constraints, and allow the volatile matter to be continuously evaporated and removed by high-temperature evaporation. The volatile matter generated in the devolatilization tank 1 moves upward and is discharged through the volatilization outlet 12. The baffle 5 is a multi-porous structure that can pass through the gas phase and prevent foam from being entrained.

[0041] Therefore, the high-viscosity system devolatilization device in the present application utilizes the cap-shaped distribution plate 3 to increase the contact area between the melt and the high-temperature chamber of the tank body, so that the residual volatiles in the high-viscosity system melt can be further removed, effectively reducing the volatile substances in the product. At the same time, the melt in the melt pool 11 is stirred by the agitator 4 to force the renewal of the melt surface, which can effectively remove volatiles and improve product quality. By arranging a baffle 5 with a porous structure at the volatilization outlet 12, it is possible to prevent foam from being entrained; and then, through the cooperation of the cap-shaped distribution plate 3, the agitator 4 and the baffle 5, the volatiles in the high-viscosity system melt can be better removed, thereby improving the devolatilization efficiency of the device and effectively improving the evaporation efficiency.

[0042] In a specific implementation, the cap-shaped distribution plate 3 has a conical structure, or the outer wall of the cap-shaped distribution plate 3 has a curved surface. The cap-shaped distribution plate 3 is a closed three-dimensional structure, and its specific dimensions are determined by the size of the devolatilizer 1. After entering the devolatilizer 1, the melt flows from the top to the bottom of the cap-shaped distribution plate 3 and is distributed, thereby increasing the specific surface area. When a conical structure is used, the specific surface area is related to the taper. Generally, a larger taper is preferred, so that the cap-shaped distribution plate 3 forms a high-specific surface area conical distribution plate, thereby improving devolatilization efficiency.

[0043] In practical applications, the outer surface of the hat-shaped distribution plate 3 is also highly polished to prevent melt accumulation.

[0044] The number of the aforementioned volatilization outlets 12 can be determined as needed. For example, in this embodiment, only one volatilization outlet 12 is provided. The high-viscosity system devolatilization device further includes an outlet pipeline and a recovery tank. The outlet pipeline is connected to the volatilization outlet 12 and the recovery tank at both ends, respectively. A condenser is also provided on the outlet pipeline. It will be appreciated that if multiple volatilization outlets 12 are provided, all of the outlets 12 are connected to the outlet pipeline.

[0045] The solvent evaporated at high temperature and the unreacted raw materials in the devolatilization tank 1 enter the volatilization outlet 12 after passing through the baffle 5. The baffle 5 can isolate the gas phase from being entrained. The devolatilized gas enters the outlet pipeline through the volatilization outlet 12. After condensation by the condenser, the gas can be cooled and liquefied and recovered into the recovery tank to achieve evaporation recovery.

[0046] When the volatilization outlet 12 is located on the side wall of the devolatilization tank 1, the baffle 5 is a conical cap with an open bottom, and its bottom opening is arranged toward the volatilization outlet 12. When the volatilization outlet 12 is located on the top surface of the devolatilization tank 1, the baffle 5 is a conical cap with an open bottom, and its bottom opening is arranged downward.

[0047] The baffle 5 adopts a conical cap, and the blocked foam can flow downward along the inclined cone surface of the conical cap and continue to flow to the cap-shaped distribution plate 3 for devolatilization, thereby further improving the devolatilization efficiency.

[0048] The high viscosity system mentioned above generally refers to a system with a viscosity greater than 10 2 Pa·s melt, generally refers to a viscosity of 10 2 -10 3 In some embodiments, the melt is a high viscosity polymer resin, and the viscosity can reach 10 3 Pa·s, the melt enters the tank through the feed pipe 2 and then falls into the melt pool 11.

[0049] The lower portion of the devolatilizer 1 preferably has a tapered structure with a diameter that tapers downward, and the agitator 4 is located within the tapered structure. The melt pool 11 represents the bottom space within the tank, and its volume should be minimized to balance melt residence time with stable operation. In this embodiment, the melt pool 11 has a tapered structure, such as an inverted cone, to minimize its volume.

[0050] The gases and solvents devolatilized through the volatilization outlet 12 include ethylene, propylene, α-olefins (1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, etc.); aromatic hydrocarbons: benzene, toluene, xylene, etc.; aliphatic hydrocarbons: pentane, hexane, octane, etc.; alicyclic hydrocarbons: cyclohexane, cyclohexanone, toluene, cyclohexanone, etc.; halogenated hydrocarbons: chlorobenzene, dichlorobenzene, dichloromethane, etc.; alcohols: methanol, ethanol, isopropanol, etc.; ethers: ethyl ether, propylene oxide, etc.; esters: methyl acetate, ethyl acetate, propyl acetate, etc.; ketones: acetone, methyl butyl ketone, methyl isobutyl ketone, etc.; glycol derivatives: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, etc.; others: acetonitrile, pyridine, phenol.

[0051] Furthermore, the agitator 4 includes an agitator shaft 41 and a plurality of paddles 42 circumferentially spaced on the agitator shaft 41. The paddles 42 are flat plates with their surfaces arranged vertically. Compared to spiral blades, the vertical arrangement of the paddles 42 generates shear forces during rotation that are more conducive to forced surface renewal of the melt, improving devolatilization efficiency.

[0052] In a preferred embodiment, the blade 42 is a triangular plate, one side of which is connected to the stirring shaft 41, and the vertex opposite to the side can extend upward from the top of the stirring shaft 41 to further improve the stirring effect. Figure 1 The stirring shaft 41 is arranged to be tilted outward and upward as shown in FIG.

[0053] A driving member is provided at the bottom of the devolatilization tank 1 , and the driving member is connected to the stirring shaft 41 and can drive the stirring shaft 41 to rotate.

[0054] The driving member can be, for example, a stirring motor 43. The paddle 42 is generally highly polished and has a certain thickness. The paddle 42 is driven to rotate by a high-power motor at the bottom. In the high-viscosity melt pool 11, residual volatiles are difficult to remove by high-temperature devolatilization. Therefore, a dynamic device (i.e., a stirrer 4) is used to force the surface of the melt to be renewed to improve the removal efficiency of the residual volatiles.

[0055] Furthermore, a melt pump 21 and a heat exchanger 22 are sequentially arranged on the feed line 2 along the material conveying direction. The melt enters the devolatilizer 1 through the feed line 2, under the pumping action of the melt pump 21 and the heating action of the heat exchanger 22. A holding box 13 is provided at the bottom of the devolatilizer 1, and a melt outlet 14 is defined in the holding box 13. A delivery pump is housed within the holding box 13, and its inlet is connected to the bottom discharge port of the devolatilizer 1 via corresponding pipelines. The outlet of the delivery pump is also connected to the melt outlet 14 via corresponding pipelines.

[0056] The above-mentioned driving member is also located in the receiving box 13. The output pump is preferably a gear pump, which is selected to drive a high-viscosity system melt. It has high power and high efficiency and can meet the melt transfer requirements of 0.1-30g / min.

[0057] Furthermore, a heating jacket 15 is provided on the outer wall of the devolatilizer 1, and an insulation jacket 23 is provided on the feed pipeline 2. Medium flow channels are formed in the side walls of the heating jacket 15 and the insulation jacket 23 for introducing heat transfer medium.

[0058] A temperature sensor and a pressure measuring instrument are also provided in the devolatilizer 1, and a liquid level detection instrument is provided at the bottom of the devolatilizer 1; a flow regulating valve is also provided at the inlet of the medium flow channel of the heating jacket 15; the high-viscosity system devolatilization device also includes a control device, which is electrically connected to the melt pump 21, the heat exchanger 22, the temperature sensor, the pressure measuring instrument, the liquid level detection instrument and the flow regulating valve.

[0059] Among them, the heating jacket 15 is an annular structure and is wrapped around the outside of the devolatilizer 1. A medium flow channel is formed in the side wall of the heating jacket 15 and is connected to the first heat medium inlet 151 and the first heat medium outlet 152 on the side wall of the heating jacket 15; the medium used can be heat transfer oil, which enters from the first heat medium inlet 151 and is discharged from the first heat medium outlet 152 after filling the medium flow channel. A flow regulating valve is provided at the first heat medium inlet 151, and a temperature sensor is provided inside the devolatilizer 1. The regulating valve control is interlocked with the heat exchanger 22 control system to ensure stable temperature control inside the devolatilizer 1.

[0060] The structure of the insulation jacket 23 is similar to that of the heating jacket 15 and is wrapped around the feed pipeline 2; the insulation jacket 23 can be wrapped around the feed pipeline 2 between the melt pump 21 and the heat exchanger 22 and the feed pipeline 2 between the heat exchanger 22 and the devolatilization tank 1. The insulation jacket 23 is an annular structure, and a medium flow channel is formed in its side wall and is connected to the second heat medium inlet 231 and the second heat medium outlet 232 on the side wall of the insulation jacket 23.

[0061] Heat exchanger 22 also includes a heat exchange channel, which communicates with third heat medium inlet 221 and third heat medium outlet 222 to exchange heat with the melt in feed line 2. Heat exchanger 22 can be a shell-and-tube heat exchanger, plate heat exchanger, or spiral heat exchanger. The heat exchanger 22 is selected by calculating the heat exchange area and efficiency of the device. The device model is selected with a heating temperature between 150°C and 250°C. The heat exchanger 22, heating jacket 15, and insulation jacket 23 together constitute the temperature control system for the high-viscosity system devolatilization unit.

[0062] The pressure measuring instrument can be a pressure sensor or vacuum gauge to detect the pressure within the devolatilizer 1. The liquid level measuring instrument can be a liquid level gauge 6, such as a capacitive probe or nuclear gauge, to detect the liquid level. A sight glass 16 is provided on the top surface of the devolatilizer 1 to observe the internal conditions.

[0063] The control device is also electrically connected to the drive member and the gear pump. The control device can be used to adjust the operation of the melt pump 21 to control the pressure of the devolatilization tank 1, and can also control the flow control valve to adjust the temperature in the devolatilization tank 1 according to the temperature detected by the temperature sensor.

[0064] Furthermore, the method for using the high-viscosity system devolatilization device comprises the following steps:

[0065] S1. Before the melt is delivered, heat the heat exchanger 22 to 150-200°C at a heating rate of 10°C / min and keep the temperature stable.

[0066] S2. Before the melt is delivered, ensure that the feed pipeline 2 is heated and delivered.

[0067] S3. Before the melt is delivered, the heating jacket 15 is turned on for heating. The heat transfer oil enters through the first heat medium inlet 151 and flows out from the first heat medium outlet 152 for circulation heating, so that the temperature of the devolatilization tank 1 is raised to 150-190°C.

[0068] S4. The melt is transported by the melt pump 21 and heated to 150-180°C by the heat exchanger 22.

[0069] S5. The melt is transported through the feed pipe 2 until it reaches the cavity of the devolatilizer 1, slowly falls, and is dispersed to the surroundings through the cap-shaped distribution plate 3.

[0070] S6. The melt slowly falls into the melt pool 11 along the hat-shaped distribution plate 3, and the liquid level begins to build up.

[0071] S7. Turn on the stirring motor 43 to drive the blade 42 to start rotating. The speed should not be too high, 50-100 r / min.

[0072] S8. Always pay attention to the liquid level displayed by the liquid level gauge 6. The liquid level in the devolatilization tank 1 does not exceed 50%. Use the sight glass 16 to observe the distribution of the melt in the tank.

[0073] S9. As the speed of the blade 42 increases, after the melt reaches a certain liquid level, the surface can be forced to renew with stirring, so that the excess volatile matter and solvent are further removed, and the devolatilization amount in the devolatilization tank 1 is increased.

[0074] S10, when the liquid level gauge 6 shows that the liquid level is 30%, the gear pump is started, and the melt is discharged as the gear pump drives it, and the melt is continuously transported to the next section through the melt outlet 14.

[0075] The following are several specific examples of using the above-mentioned high-viscosity system devolatilization device for devolatilization:

[0076] Example 1: First, the devolatilizer 1 is heated to 150°C at a rate of 10°C / min using the temperature control program on the control console. The temperature reading is then monitored and maintained stable, maintaining the temperature between 150°C and 152°C. Before melt delivery, the pressure reading is observed to be between 0 and 0.5 mPa. After the pressure within the device stabilizes, the melt pump 21 is opened to 100% and the heat exchanger 22 is heated to 170°C. After being heated in the heat exchanger 22, the resin melt slowly falls into the devolatilizer 1 through the outlet of the feed line 2 and onto the cap-shaped distribution plate 3. The melt feed rate is controlled by the front system to maintain a melt flow rate of 5 to 20 kg / 10 min into the devolatilizer. The melt slowly flows along the cap-shaped distribution plate 3, while the stirring motor 43 is simultaneously activated, driving the paddle 42 to begin rotating. The speed should not be too high, and is controlled to 50 rpm.

[0077] Example 2: Its basic structure and parameters are the same as those of the above-mentioned Example 1, except that the devolatilizer 1 is heated to 170°C at a heating rate of 10°C / min through the operating table temperature control program, the heat exchanger 22 is heated to 190°C, and the initial speed of the paddle 42 is controlled to 70 r / min.

[0078] Example 3: Devolatilization is performed in the same manner as in Example 1, except that the devolatilization temperature is increased to 220° C., the heat exchanger 22 is heated to 240° C., and the initial rotation speed of the blade 42 is controlled to 50 r / min.

[0079] After devolatilization of the melt in the above three embodiments, the content of volatile matter in the melt discharged through the melt outlet 14 and the viscosity of the melt are shown in the following table.

[0080] Example Example 1 Example 2 Example 3 Volatile matter 900PPM 500PPM 400PPM Viscosity 1200cp 1800cp 2400cp

[0081] In summary, the high-viscosity system devolatilization device in this embodiment has the following advantages:

[0082] (1) High evaporation efficiency: The combination of the cap-shaped distribution plate 3 and the agitator 4 can improve the evaporation efficiency and achieve a faster and more efficient liquid evaporation process.

[0083] (2) Low energy consumption: The devolatilization efficiency can be improved by cooperating with the cap-shaped distribution plate 3 and the stirrer 4, and the overall temperature does not need to be too high. Combined with the heating and heat preservation effect of the insulation jacket 23 and the heating jacket 15, energy consumption can be reduced and energy utilization efficiency can be improved.

[0084] (3) Stable product quality: Through precise temperature control, efficient material separation and concentration and other technical means, the consistency and purity of product quality can be improved.

[0085] (4) The equipment is relatively simple and low-cost: The entire device has a simple structure and is easy to operate, which reduces the cost of the equipment and improves the convenience of operation and maintenance.

[0086] (5) Convenient for real-time monitoring and control: Accurate monitoring and control of the devolatilization process can be achieved through control devices, sensors, and feedback control algorithms.

[0087] (6) Equipment safety and stability: Through the selection of materials, safety design, reliable control system, etc., the safety and stability of the devolatilizer 1 can be ensured and the risk of accidents can be reduced.

[0088] (7) Wide range of liquid treatment: Different liquids have different viscosities and relative volatility. By optimizing and adjusting the structural dimensions and relevant process parameters of this device, the bubble point requirements of most liquids can be met, efficient devolatilization can be achieved, and the adaptability of the devolatilization tank 1 to different liquids can be realized, thereby expanding the liquid treatment range.

[0089] (8) Improving operational flexibility: Through technical means such as intelligent control and adaptive adjustment, the operational flexibility of the devolatilizer 1 can be improved to facilitate response to different working conditions and production requirements.

[0090] The entire device utilizes high-efficiency heat exchangers to transfer heat at high temperatures, transporting the melt and removing volatiles from the highly viscous melt. The devolatilizer 1 is equipped with a high-surface-area distribution plate, baffles 5, and a dynamic agitator. Through coordinated operation of these systems, volatiles such as solvents and unreacted raw materials can be removed to a significant extent from the high-molecular-weight, high-viscosity melt, improving the device's devolatilization efficiency and enhancing product quality. This addresses issues such as difficulty removing volatiles from highly viscous melts, unstable temperature control, and low devolatilization efficiency. It also enhances the safety, adaptability, environmental friendliness, and operational flexibility of the devolatilizer 1, further promoting the sustainable development of devolatilization technology and meeting the specific application needs of various industries and fields.

[0091] The above is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A high viscosity system devolatilization device, characterized in that: include: A vertically arranged devolatilizer is provided with a cap-shaped distribution plate therein. The cap-shaped distribution plate is a three-dimensional structure with an outer wall diameter gradually increasing from top to bottom. A gap is formed between the bottom of the cap-shaped distribution plate and the inner wall of the devolatilizer, forming a liquid passage. At least one volatilization outlet is provided in the upper portion of the devolatilizer and above the cap-shaped distribution plate. An agitator is provided in the lower portion of the devolatilizer and below the cap-shaped distribution plate. A baffle is provided in the devolatilizer corresponding to each volatilization outlet, and a plurality of air holes are formed on the baffle. The outlet end of the feed pipeline extends into the devolatilization tank and is arranged downwardly facing the top of the hat-shaped distribution plate.

2. The high viscosity system devolatilization device according to claim 1, characterized in that: The hat-shaped distribution plate is a conical structure, or the outer wall of the hat-shaped distribution plate is a curved surface structure.

3. The high viscosity system devolatilization device according to claim 1, characterized in that: The volatilization outlet is located on the side wall of the devolatilization tank, and the baffle is a conical cap with an opening at the bottom, and the bottom opening is arranged toward the volatilization outlet.

4. The high viscosity system devolatilization device according to claim 1, characterized in that: The volatilization outlet is located on the top surface of the devolatilization tank, and the baffle is a conical cap with an opening at the bottom, and the bottom opening is arranged downward.

5. The high viscosity system devolatilization device according to claim 1, characterized in that: The stirrer comprises a stirring shaft and a plurality of blades arranged on the stirring shaft at circumferential intervals. The blades are flat plate structures with the plate surfaces arranged vertically.

6. The high viscosity system devolatilization device according to claim 5, characterized in that: The blade is a triangular plate body, one side of the triangular plate body is connected to the stirring shaft, and the vertex angle opposite to the side can extend upward from the top of the stirring shaft.

7. The high viscosity system devolatilization device according to claim 5, characterized in that: A driving member is provided at the bottom of the devolatilization tank, and the driving member is connected to the stirring shaft and can drive the stirring shaft to rotate.

8. The high viscosity system devolatilization device according to claim 1, characterized in that: A melt pump and a heat exchanger are sequentially arranged on the feed pipeline along the material conveying direction.

9. The high viscosity system devolatilization device according to claim 8, characterized in that: A heating jacket is provided on the outer wall of the devolatilizer, and a heat-insulating jacket is provided on the feed pipeline. Medium flow channels are formed in the side walls of the heating jacket and the heat-insulating jacket for introducing heat-conducting medium.

10. The high viscosity system devolatilization device according to claim 9, characterized in that: A temperature sensor and a pressure measuring instrument are also provided in the devolatilization tank, and a liquid level detection instrument is provided at the bottom of the devolatilization tank; a flow regulating valve is also provided at the inlet of the medium flow channel of the heating jacket; The high-viscosity system devolatilization device further includes a control device, which is electrically connected to the melt pump, the heat exchanger, the temperature sensor, the pressure measuring instrument, the liquid level detection instrument, and the flow regulating valve.

11. The high viscosity system devolatilization device according to claim 1, characterized in that: A sight glass is provided on the top surface of the devolatilizer.

12. The high viscosity system devolatilization device according to claim 1, characterized in that: The lower portion of the devolatilization tank is a tapered structure with a diameter that gradually decreases downward, and the agitator is arranged in the tapered structure.

13. The high viscosity system devolatilization device according to claim 1, characterized in that: A holding box is provided at the bottom of the devolatilization tank, and a melt outlet is provided on the holding box; an output pump is provided in the holding box, and the inlet end of the output pump is connected to the bottom discharge port of the devolatilization tank through a corresponding pipeline, and the outlet end of the output pump is connected to the melt outlet through a corresponding pipeline.

14. The high viscosity system devolatilization device according to claim 1, characterized in that: The high-viscosity system devolatilization device further comprises an outlet pipeline and a recovery tank. Both ends of the outlet pipeline are connected to the volatilization outlet and the recovery tank respectively. A condenser is also provided on the outlet pipeline.

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