Reaction kettle capable of continuously operating

Abstract

The utility model discloses a reaction kettle capable of continuously operating. The reaction kettle comprises a reaction kettle body provided with an inner cavity and refrigeration cycle equipment, a stirrer and a baffle plate assembly are arranged in the inner cavity; a mother liquid input pipe, a circulating liquid input pipe, a circulating liquid outlet and an overflow port which are communicated with the inner cavity are arranged on the side wall of the reaction kettle body; the mother liquor input pipe is connected with external mother liquor supply equipment, the circulating liquid input pipe is connected with the output end of the refrigeration circulating equipment, and the circulating liquid outlet is connected with the input end of the refrigeration circulating equipment. According to the continuous cooling crystallization reaction kettle, the technical problems of low efficiency, poor quality control and high energy consumption of the existing reaction kettle in an intermittent cooling crystallization process are solved, and the technical effect that the reaction kettle is adaptive to a continuous cooling crystallization process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically to a reaction vessel that can operate sustainably. Background Technology

[0002] The cooling crystallization process of sulfate solution is a widely used separation and purification technology. The core principle of the process is to take advantage of the characteristic that the solubility of the target sulfate decreases significantly with decreasing temperature. By cooling a saturated or near-saturated solution at high temperature, supersaturation conditions are created, which causes the solute to precipitate out of the solution in crystal form. Finally, a pure solid product is obtained through solid-liquid separation.

[0003] In existing processes, the cooling and crystallization reaction of sulfate solution is usually carried out in a reactor. A heat exchange coil connected to the refrigerant is usually installed in the reactor. Cooling is achieved through heat exchange between the high-temperature solution and the heat exchange coil. Since sufficient heat exchange between the heat exchange coil and the high-temperature solution requires a certain amount of time, existing reactors are usually used by first adding a certain amount of high-temperature solution into the inner cavity and waiting for the cooling reaction to proceed. After the reaction is completed, the solid-liquid mixture is discharged, and then the material is added again to start the next batch of operation, and so on in a cycle.

[0004] However, there are some problems with the use of this intermittently operated reactor. First, each cycle requires a lot of non-productive time for feeding, waiting for cooling, and unloading. Second, due to the slight differences in the initial conditions and cooling process of each batch, nucleation and crystal growth cannot be precisely controlled, resulting in uneven crystal particle size distribution between batches. Furthermore, the refrigerator and heat exchange coils need to repeatedly cool the newly added high-temperature material from the starting point.

[0005] In summary, this intermittent production method leads to problems such as low production efficiency, difficulty in ensuring product quality stability, and high equipment energy consumption. Utility Model Content

[0006] This application provides a continuously operating reactor to solve the technical problems of low efficiency, poor quality control and high energy consumption in existing reactors in intermittent cooling crystallization processes.

[0007] This application provides a continuously operating reactor, comprising: a reactor body with an inner cavity and a refrigeration circulation device; an agitator and a baffle assembly are provided in the inner cavity; a mother liquor inlet pipe, a circulating liquid inlet pipe, a circulating liquid outlet and an overflow port are provided on the side wall of the reactor body and communicate with the inner cavity; the mother liquor inlet pipe is connected to an external mother liquor supply device, the circulating liquid inlet pipe is connected to the output end of the refrigeration circulation device, and the circulating liquid outlet is connected to the input end of the refrigeration circulation device.

[0008] By adopting the above technical solution, a refrigeration circulation device connected to the inner cavity of the reactor is set up, and a mother liquor inlet pipe, a circulating liquid inlet pipe, and a circulating liquid outlet are set up in the inner cavity of the reactor. This realizes continuous feeding of high-temperature solution and circulating feeding and discharging of low-temperature circulating liquid, avoiding non-productive time such as feeding, waiting for cooling and unloading in intermittent operation, thereby significantly improving production efficiency. Continuous operation ensures the consistency of crystallization and eliminates the need for the refrigeration unit to repeatedly cool new materials, reducing energy consumption and improving energy utilization efficiency. An overflow port is set up in the inner cavity to maintain stable reaction operation. At the same time, by setting up a stirrer and baffle assembly, the liquid rotation flow is converted into axial circulation flow while ensuring sufficient mixing of the liquid, enhancing the heat exchange efficiency of high and low temperature solutions and ensuring the uniformity of the liquid in the inner cavity, thereby improving the cooling rate and the uniformity of crystallization.

[0009] Preferably, the inner cavity of the reactor body is divided into a clear liquid layer, a mixing layer and a crystallization layer from top to bottom. The mother liquor inlet pipe, the circulating liquid inlet pipe and the overflow port are all connected to the clear liquid layer, and the circulating liquid outlet is connected to the mixing layer. The baffle assembly is located in the mixing layer, and the stirring impeller of the stirrer is located in the crystallization layer.

[0010] By adopting the above technical solution, the inner cavity during the displacement reaction is divided into a clear liquid layer, a mixing layer, and a crystallization layer. The mother liquor input pipe, the circulating liquid input pipe, and the overflow port are located in the clear liquid layer, the baffle assembly and the circulating liquid outlet are located in the mixing layer, and the stirring impeller is located in the crystallization layer. This layered arrangement of input pipes and output ports ensures the rapid input and output of the solution in the inner cavity. At the same time, the high-temperature mother liquor enters the mixing layer for heat exchange after being initially buffered by the clear liquid layer, and crystallizes in the crystallization layer. This avoids direct thermal shock of the high-temperature mother liquor to the mixing layer and the crystallization layer, ensuring uniform and efficient transfer of heat and concentration, and further improving the uniformity of crystal particle size distribution and product quality stability.

[0011] Preferably, the inner cavity is provided with a first tube body whose inlet end is connected to the circulating liquid input pipe, and the outlet end of the first tube body is set vertically downward and located in the mixing layer.

[0012] By adopting the above technical solution, the first pipe is connected to the circulating liquid inlet pipe, and the outlet end of the first pipe is placed downwards in the mixing layer, so that the low temperature circulating liquid directly enters the mixing layer, avoiding heat exchange between the low temperature circulating liquid and the liquid in the clear liquid layer, ensuring that the low temperature circulating liquid exchanges heat in the mixing layer, and improving the heat exchange efficiency and energy utilization of the equipment.

[0013] Preferably, a vertically arranged guide shroud with openings at both ends is fixed on the inner wall of the cavity. The upper opening of the guide shroud is located in the clear liquid layer, and the lower opening of the guide shroud is located in the mixing layer. The overflow port and the circulating liquid outlet are both located inside the guide shroud.

[0014] By adopting the above technical solution, a flow guide is installed on the inner wall of the cavity, and the overflow port and circulating liquid outlet are located inside the flow guide. This further ensures the axial flow of the solution, realizes the overflow of the clear liquid layer and the continuous input to the refrigeration cycle equipment, thereby maintaining the steady-state operation of the entire cycle process, reducing the impact of liquid level fluctuations on the crystallization process, and improving the continuity of operation and the stability of product quality.

[0015] Preferably, the inner cavity is provided with a vertically arranged guide tube with openings at both ends. The guide tube and the guide shroud are located on opposite sides of the inner cavity. The upper opening of the guide tube is located in the clear liquid layer, and the lower opening of the guide tube is located in the mixing layer. The outlet end of the mother liquor input tube is vertically downward and located inside the guide tube.

[0016] By adopting the above technical solution, a guide pipe is set in the inner cavity, and the outlet of the mother liquor input pipe is set downward in the guide pipe. The mother liquor is guided through the guide pipe, allowing it to directly enter the mixing layer downward. This promotes thorough mixing of the mother liquor and the cooling medium in the mixing layer, enhances the heat exchange effect, and further improves the cooling efficiency and crystallization consistency. At the same time, it avoids excessive diffusion of the mother liquor into the clear liquid layer. Furthermore, the guide pipe and the guide shroud are set opposite each other on both sides of the inner cavity to prevent the high-temperature mother liquor from diffusing into the guide shroud too quickly after input, ensuring sufficient time for the crystallization reaction.

[0017] Preferably, the baffle assembly includes a vertically arranged first baffle, the upper end of which is located at the junction of the mixing layer and the clear liquid layer, and the lower end of which is located at the junction of the mixing layer and the crystallization layer.

[0018] By adopting the above technical solution, the first baffle plate penetrates the mixing layer from top to bottom, completely avoiding the problem of swirling flow in the mixing layer. At the same time, it improves the relative mixing between the mixing layer and the clear liquid layer, and between the mixing layer and the crystallization layer, guides the solution to flow along a predetermined path, ensures that the mother liquor is fully cooled in the mixing layer before entering the crystallization layer, optimizes the crystallization conditions, and improves the crystal quality.

[0019] Preferably, the baffle assembly further includes a plurality of second baffles vertically disposed within the mixing layer, all of which are arranged parallel to the first baffle.

[0020] By adopting the above technical solution, multiple second baffles are set in the mixing layer. The vertically set second baffles, together with the first baffles, form a tortuous axial flow path in the mixing layer, which further ensures the uniformity of the liquid in the mixing layer, enhances the heat exchange efficiency in the mixing layer, and thus improves the cooling rate and the uniformity of crystallization.

[0021] Preferably, all the second baffles are divided into at least two groups that are spaced apart vertically, with all the second baffles in each group distributed at intervals in the horizontal direction, and the second baffles in any two adjacent groups are staggered in the horizontal direction.

[0022] By adopting the above technical solution, the second baffles are grouped and staggered to form a multi-stage baffle structure, which further enhances the mixing and heat transfer of the solution, reduces the temperature gradient, and makes the cooling process more uniform, thereby improving the control accuracy of crystallization and the consistency of the product.

[0023] Preferably, the stirrer further includes a drive shaft vertically disposed at the center of the inner cavity, a first baffle plate disposed between the guide tube and the guide shroud, and the direction of the first baffle plate is perpendicular to the direction of the guide tube toward the guide shroud. The first baffle plate is disposed between the guide tube and the drive shaft, and all second baffle plates are disposed between the guide shroud and the drive shaft.

[0024] By adopting the above technical solution, the baffles are set perpendicular to the line connecting the guide pipe and the guide shroud. The first baffle is placed between the guide pipe and the drive shaft, and all the second baffles are placed between the guide shroud and the drive shaft. This maximizes the effective area of ​​the baffles relative to the guide pipe and the guide shroud, further optimizing the flow pattern in the inner cavity. This ensures that the solution circulates fully under the stirring action. At the same time, the baffle assembly guides the flow path, improving the overall mixing efficiency and cooling uniformity, thereby improving production efficiency and product quality.

[0025] Preferably, both ends of the first baffle and both ends of the second baffle are detachably plugged into or bolted to the inner wall of the inner cavity.

[0026] By adopting the above technical solution, the first baffle and the second baffle are installed in the inner cavity in a detachable manner by plugging or bolting, so as to realize the quick and detachable installation of the baffle, reduce the assembly time, and at the same time, the detachable design facilitates the replacement or maintenance of individual baffles, reducing the long-term use cost of the equipment.

[0027] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0028] 1. By realizing continuous feeding, cooling crystallization and overflow discharge of solution, the non-productive waiting time required for feeding, cooling and unloading in traditional intermittent operation is completely eliminated. At the same time, the refrigeration system no longer needs to repeatedly cool each batch of new material from a high temperature starting point, thereby significantly improving the production efficiency of the equipment and greatly reducing energy consumption.

[0029] 2. Through the cooperation of the stirrer and baffle assembly, the inner cavity is divided into three layers: clear liquid layer, mixed layer and crystallization layer. Combined with the guiding and turbulence effects of the guide pipe, guide hood and baffle assembly, a stable and controllable environment is created for the cooling and crystallization process of the mother liquor. This effectively reduces the differences between different batches of products, ensures uniform crystal particle size distribution, and significantly improves the quality stability of the final product.

[0030] 3. The improved coordination between the stirrer and the specially arranged first and second baffles creates an efficient and controllable fluid circulation path within the cavity, greatly enhancing solution mixing and heat exchange, avoiding temperature unevenness and flow dead zones, resulting in a more uniform crystallization process, and further ensuring high product quality and robust production process. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A side-view sectional view of a sustainably operating reactor provided for this application;

[0033] Figure 2 for Figure 1 A cross-sectional view from the perspective of the middle BB (Black-White) section;

[0034] Figure 3 A partial view of the connection between the second baffle and the second slot in a continuously operating reactor provided in this application;

[0035] Figure 4 A connection diagram of a sustainably operating reactor provided in this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Reactor body; 11. Inner cavity; 111. Circulating liquid inlet pipe; 112. Circulating liquid outlet; 113. Overflow port; 12. First slot; 13. Second slot; 2. Stirrer; 21. Drive shaft; 22. Stirring impeller; 3. Mother liquor inlet pipe; 4. First pipe body; 5. Guide pipe; 6. Guide hood; 7. First baffle; 8. Second baffle; 9. Refrigeration circulation equipment; 91. Output end; 92. Input end; a. Clear liquid layer; b. Mixed layer; c. Crystallized layer. Detailed Implementation

[0037] This application provides a continuously operating reactor to solve the technical problems of low efficiency, poor quality control and high energy consumption in existing reactors in intermittent cooling crystallization processes.

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0043] Example: Figures 1 to 4The embodiment of this application shows a continuously operating reactor, including: a reactor body 1 with an inner cavity 11 and a refrigeration circulation device 9; a stirrer 2 and a baffle assembly are provided in the inner cavity 11; the side wall of the reactor body 1 is provided with a mother liquor input pipe 3, a circulating liquid input pipe 111, a circulating liquid outlet 112 and an overflow port 113 communicating with the inner cavity 11; the mother liquor input pipe 3 is connected to an external mother liquor supply device, the circulating liquid input pipe 111 is connected to the output end 91 of the refrigeration circulation device 9, and the circulating liquid outlet 112 is connected to the input end 92 of the refrigeration circulation device 9.

[0044] Furthermore, in the embodiments provided in this application, the inner cavity 11 of the reactor body 1 is divided into a clear liquid layer a, a mixing layer b and a crystallization layer c from top to bottom. The mother liquor input pipe 3, the circulating liquid input pipe 111 and the overflow port 113 are all connected to the clear liquid layer a, and the circulating liquid outlet 112 is connected to the mixing layer b. The baffle assembly is located in the mixing layer b, and the stirring impeller 22 of the stirrer 2 is located in the crystallization layer c.

[0045] Preferably, in this embodiment, such as Figure 1 and Figure 4 As shown, the reactor body 1 has a cylindrical inner cavity 11, which is divided into a clear liquid layer a, a mixing layer b, and a crystallization layer c from top to bottom. The clear liquid layer a has a mother liquor inlet pipe 3, a circulating liquid inlet pipe 111, and an overflow port 113 on its side wall. The mixing layer b has a circulating liquid outlet port 112 on its side wall. The mixing layer b has a baffle assembly. The inner cavity 11 has a stirrer 2, whose drive shaft 21 is vertically arranged on the central axis of the inner cavity 11. The stirring impeller 22 of the stirrer 2 is located at the crystallization layer c. The input end 92 of the refrigeration circulation device 9 is connected to the circulating liquid inlet pipe 111, and the output end 91 is connected to the circulating liquid outlet port 112.

[0046] This layered design allows the high-temperature mother liquor to undergo heat exchange in the mixing layer b after initial buffering in the clear liquid layer a, and finally crystallizes in the crystallization layer c. This avoids direct thermal shock to the mixing layer b and the crystallization layer c from the high-temperature mother liquor, ensuring uniform and efficient heat and concentration transfer, and further improving the uniformity of crystal particle size distribution and product quality stability.

[0047] Furthermore, in the embodiments provided in this application, the inner cavity 11 is provided with a first tube 4 whose inlet end is connected to the circulating liquid input pipe 111, the outlet end of the first tube 4 is vertically downward and located in the mixing layer b.

[0048] More preferably, in this embodiment, such as Figure 1As shown, the inner cavity 11 is provided with a first tube 4, which is in the shape of an inverted "L". The inlet end of the first tube 4 is connected to the circulating liquid input pipe 111, and the outlet end of the first tube 4 extends vertically downward and is located in the mixing layer b.

[0049] In this system, by connecting the first pipe body 4 to the circulating liquid inlet pipe 111 and setting the outlet end of the first pipe body 4 downwards in the mixing layer b, the low-temperature circulating liquid directly enters the mixing layer b, avoiding heat exchange between the low-temperature circulating liquid and the liquid in the clear liquid layer a, ensuring that the low-temperature circulating liquid exchanges heat in the mixing layer b, and improving the heat exchange efficiency and energy utilization of the equipment.

[0050] Furthermore, in the embodiments provided in this application, a vertically arranged guide shroud 6 with openings at both ends is fixed on the inner wall of the inner cavity 11. The upper opening of the guide shroud 6 is located in the clear liquid layer a, and the lower opening of the guide shroud 6 is located in the mixing layer b. The overflow port 113 and the circulating liquid outlet 112 are both located inside the guide shroud 6.

[0051] Furthermore, in the embodiments provided in this application, the inner cavity 11 is provided with a vertically arranged guide pipe 5 with openings at both ends. The guide pipe 5 and the guide shroud 6 are located on opposite sides of the inner cavity 11. The upper opening of the guide pipe 5 is located in the clear liquid layer a, and the lower opening of the guide pipe 5 is located in the mixing layer b. The outlet end of the mother liquor input pipe 3 is vertically downward and located inside the guide pipe 5.

[0052] More preferably, in this embodiment, such as Figure 1 and Figure 2 As shown, the inner wall of the inner cavity 11 is provided with a guide pipe 5 and a guide shroud 6 on both sides. The guide pipe 5 and the guide shroud 6 are both "U" shaped and are connected to the inner wall to form a channel. The guide pipe 5 and the guide shroud 6 are both vertically arranged and open at both ends. The upper opening of the guide pipe 5 and the guide shroud 6 are both located in the clear liquid layer a, and the lower opening of the guide pipe 5 and the guide shroud 6 are both located in the mixing layer b. The outlet end of the mother liquor input pipe 3 is vertically downward and arranged in the guide pipe 5. The overflow port 113 and the circulating liquid outlet 112 are both located inside the guide shroud 6.

[0053] The liquid is guided by the flow guide pipe 5 and the flow guide shroud 6, which promotes thorough mixing of the solution, enhances the heat exchange effect, and further improves the cooling efficiency and crystallization consistency. This maintains the steady-state operation of the entire cycle process, reduces the impact of liquid level fluctuations on the crystallization process, and improves the continuity of operation and the stability of product quality. At the same time, the flow guide pipe 5 and the flow guide shroud 6 are positioned opposite each other on both sides of the inner cavity 11 to prevent the high-temperature mother liquor from diffusing into the flow guide shroud 6 too quickly after input, ensuring sufficient time for the crystallization reaction.

[0054] Furthermore, in the embodiments provided in this application, the baffle assembly includes a vertically arranged first baffle 7, the upper end of the first baffle 7 being located at the junction of the mixing layer b and the clear liquid layer a, and the lower end of the first baffle 7 being located at the junction of the mixing layer b and the crystallization layer c.

[0055] More preferably, in this embodiment, such as Figure 1 As shown, the upper end of the first baffle 7 is located at the junction of the mixing layer b and the clear liquid layer a, and the lower end of the first baffle 7 is located at the junction of the mixing layer b and the crystallization layer c.

[0056] By setting the first baffle 7 to penetrate the mixing layer b from top to bottom, the problem of swirling flow in the mixing layer b is completely avoided. At the same time, the relative mixing between the mixing layer b and the clear liquid layer a, and between the mixing layer b and the crystallization layer c is improved, the solution is guided to flow along a predetermined path, and the mother liquor is ensured to enter the crystallization layer c after being fully cooled in the mixing layer b.

[0057] Furthermore, in the embodiments provided in this application, the baffle assembly further includes a plurality of second baffles 8 vertically disposed within the mixing layer b, all of which are arranged parallel to the first baffle 7; all of the second baffles 8 are at least divided into two groups arranged vertically at intervals, all of which are distributed horizontally at intervals in each group, and the second baffles 8 in any two adjacent groups are staggered in the horizontal direction.

[0058] More preferably, in this embodiment, such as Figure 1 As shown, the inner cavity 11 is also provided with four second baffles 8 arranged parallel to the first baffle 7. The four second baffles 8 are divided into upper and lower groups. All the second baffles 8 in each group are distributed at intervals in the horizontal direction, and the second baffles 8 in the upper and lower groups are staggered.

[0059] In this process, by setting four second baffles 8 in the mixing layer b, the staggered distribution of the second baffles 8, together with the first baffle 7, forms a multi-stage baffle structure, creating a tortuous axial flow path in the mixing layer b, which further ensures the uniformity of the liquid in the mixing layer b.

[0060] Furthermore, in the embodiments provided in this application, the stirrer 2 also includes a drive shaft 21 vertically disposed at the center of the inner cavity 11, a first baffle 7 disposed between the guide pipe 5 and the guide shroud 6, and the setting direction of the first baffle 7 is perpendicular to the direction of the guide pipe 5 toward the guide shroud 6. The first baffle 7 is disposed between the guide pipe 5 and the drive shaft 21, and all second baffles 8 are disposed between the guide shroud 6 and the drive shaft 21.

[0061] More preferably, in this embodiment, such as Figure 2As shown, the guide pipe 5 and the guide shroud 6 are located on the left and right sides of the inner cavity 11, respectively. The first baffle 7 is positioned vertically, meaning that the two end faces of the first baffle 7 face left and right, respectively. Figure 1 As shown, the first baffle plate 7 is located between the guide pipe 5 and the drive shaft 21, and the four guide shields 6 are all located between the guide shields 6 and the drive shaft 21.

[0062] This layout maximizes the effective area of ​​the baffle relative to the guide pipe 5 and the guide shroud 6, further optimizing the flow pattern in the inner cavity 11 and ensuring that the solution circulates fully under stirring. At the same time, the baffle assembly guides the flow path, improving the overall mixing efficiency and cooling uniformity.

[0063] Furthermore, in the embodiments provided in this application, both ends of the first baffle 7 and both ends of the second baffle 8 are detachably plugged into or connected to the inner wall of the inner cavity 11 by bolts.

[0064] More preferably, in this embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the inner cavity 11 is provided with a pair of first slots 12 and four pairs of second slots 13. The first baffle plate 7 and the second baffle plate 8 have the same thickness, and the first slots 12 and the second slots 13 have the same structure. The two ends of the first baffle plate 7 are inserted into the first slot 12 from top to bottom, and the two ends of the second baffle plate 8 are inserted into the second slots 13 from top to bottom.

[0065] By setting a first slot 12 and a second slot 13 on the inner wall of the inner cavity 11, and installing the first baffle plate 7 and the second baffle plate 8 in a vertical insertion manner, the baffle plates can be quickly and easily detached, reducing assembly time. At the same time, the detachable design facilitates the replacement or maintenance of individual baffle plates, reducing the long-term operating cost of the equipment.

[0066] In another preferred embodiment provided in this application, the inner cavity 11 has multiple pairs of screw holes on its side wall, and the first baffle plate 7 and the second baffle plate 8 have vertically extending bolt mounting plates at both ends, with corresponding screw holes on the mounting plates. The first baffle plate 7 and the second baffle plate 8 are connected to the reactor body 1 by bolts.

[0067] During operation, the high-temperature mother liquor is continuously input from the mother liquor input pipe 3, flows downward into the mixing layer b through the guide pipe 5, and exchanges heat with the low-temperature solution input downward through the first pipe 4 in the mixing layer b. The high-concentration solution after mixing on the left side of the inner cavity 11 flows under the drive and guidance of the stirrer 2 and the baffle assembly. Crystals precipitate and grow in the crystallization layer c, the low-concentration solution is stable in the mixing layer b, and the clear liquid is stable in the clear liquid layer a. Part of the low-concentration solution in the mixing layer b enters the input end 92 of the refrigeration cycle device 9 from the circulating liquid outlet 112. Under the action of the refrigeration cycle device 9, it is transformed into a low-temperature solution and transported to the circulating liquid input pipe 111 from the output end 91. Then it is output to the mixing layer b through the first pipe 4 to form a cycle. Finally, the solid-liquid mixture is discharged from the outlet at the bottom of the inner cavity 11, realizing the efficient, stable and continuous operation of the entire crystallization process.

[0068] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0069] This specification and accompanying drawings are merely illustrative examples of this application and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Therefore, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A continuously operating reaction vessel, characterized in that: The reactor body (1) includes an inner cavity (11) and a refrigeration circulation device (9); the inner cavity (11) is provided with a stirrer (2) and a baffle assembly; the side wall of the reactor body (1) is provided with a mother liquor input pipe (3), a circulating liquid input pipe (111), a circulating liquid outlet (112) and an overflow port (113) communicating with the inner cavity (11); the mother liquor input pipe (3) is connected to an external mother liquor supply device, the circulating liquid input pipe (111) is connected to the output end (91) of the refrigeration circulation device (9), and the circulating liquid outlet (112) is connected to the input end (92) of the refrigeration circulation device (9).

2. The continuously operating reactor according to claim 1, characterized in that, The inner cavity (11) of the reactor body (1) is divided into a clear liquid layer (a), a mixing layer (b) and a crystallization layer (c) from top to bottom. The mother liquor input pipe (3), the circulating liquid input pipe (111) and the overflow port (113) are all connected to the clear liquid layer (a), and the circulating liquid outlet (112) is connected to the mixing layer (b). The baffle assembly is located in the mixing layer (b), and the stirring impeller (22) of the stirrer (2) is located in the crystallization layer (c).

3. A continuously operating reactor according to claim 2, characterized in that, The inner cavity (11) is provided with a first tube (4) whose inlet end is connected to the circulating liquid input pipe (111). The outlet end of the first tube (4) is set vertically downward and is located in the mixing layer (b).

4. A continuously operating reactor according to claim 2, characterized in that, The inner wall of the inner cavity (11) is fixed with a vertically arranged guide shroud (6) with openings at both ends. The upper opening of the guide shroud (6) is located in the clear liquid layer (a), and the lower opening of the guide shroud (6) is located in the mixing layer (b). The overflow port (113) and the circulating liquid outlet (112) are both located inside the guide shroud (6).

5. A continuously operating reactor according to claim 4, characterized in that, The inner cavity (11) is provided with a vertically arranged guide tube (5) with openings at both ends. The guide tube (5) and the guide shroud (6) are located on opposite sides of the inner cavity (11). The upper opening of the guide tube (5) is located in the clear liquid layer (a), and the lower opening of the guide tube (5) is located in the mixing layer (b). The outlet end of the mother liquor input pipe (3) is vertically downward inside the guide tube (5).

6. A continuously operating reactor according to claim 5, characterized in that, The baffle assembly includes a vertically arranged first baffle (7), the upper end of which is located at the junction of the mixing layer (b) and the clear liquid layer (a), and the lower end of which is located at the junction of the mixing layer (b) and the crystallization layer (c).

7. A continuously operating reactor according to claim 6, characterized in that, The baffle assembly also includes a plurality of second baffles (8) vertically disposed within the mixing layer (b), and all the second baffles (8) are arranged parallel to the first baffles (7).

8. A continuously operating reactor according to claim 7, characterized in that, All the second baffles (8) are divided into at least two groups with vertical spacing. All the second baffles (8) in each group are distributed horizontally with spacing, and the second baffles (8) in any two adjacent groups are staggered in the horizontal direction.

9. A continuously operating reaction vessel according to claim 7, characterized in that, The stirrer (2) also includes a drive shaft (21) vertically disposed at the center of the inner cavity (11), the first baffle (7) is disposed between the guide pipe (5) and the guide shroud (6), and the setting direction of the first baffle (7) is perpendicular to the direction of the guide pipe (5) toward the guide shroud (6). The first baffle (7) is disposed between the guide pipe (5) and the drive shaft (21), and all the second baffles (8) are disposed between the guide shroud (6) and the drive shaft (21).

10. A continuously operating reactor according to claim 7, characterized in that, Both ends of the first baffle (7) and both ends of the second baffle (8) are detachably plugged into or connected to the inner wall of the inner cavity (11) by bolts.

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