Multi-section temperature control batching kettle

Abstract

The utility model discloses a multi-section temperature control batching kettle which comprises a kettle body, a plurality of groups of mixing parts for mixing materials are sequentially arranged in the kettle body from top to bottom, a mixing unit comprises a supporting unit, a mixing flow guide unit and a turbulent flow unit, and the supporting unit, the mixing flow guide unit and the turbulent flow unit are sequentially connected. A plurality of ultrasonic assemblies are respectively assembled on each supporting unit, a driving part is arranged at the top of the kettle body, the driving part is used for driving a stirring part which is arranged in the kettle body and is matched with each mixing part, and a plurality of groups of temperature control parts for controlling temperature are sequentially arranged on the outer side wall of the kettle body from top to bottom; according to the structure of the reaction kettle, a three-dimensional mixing space is constructed through the mixing parts which are arranged up and down, so that materials can flow in areas with different heights, the reaction kettle is matched with the driving part and the stirring part to form an axial and radial composite flow field, solid-liquid shearing and turbulence are enhanced, local agglomeration is reduced, and a plurality of layers of independent temperature control areas are arranged on the outer side of the kettle body, so that the temperature gradient can be dynamically adjusted.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and more specifically to a multi-stage temperature-controlled batching reactor. Background Technology

[0002] With the increasing market demand for bis(fluorosulfonyl)imide, a novel electrolyte for lithium-ion batteries, in recent years, the production process of its raw material, bis(fluorosulfonyl)imide, has become increasingly important. The most valuable production method at present is to further produce bis(fluorosulfonyl)imide by fluorine-chlorine exchange. Bis(fluorosulfonyl)imide is currently the intermediate in the mainstream process of lithium bis(fluorosulfonyl)imide.

[0003] The production of bis(chlorosulfonyl)imide typically involves a condensation reaction of aminosulfonic acid and chlorosulfonic acid under the action of thionyl chloride to produce bis(chlorosulfonyl)imide. In this reaction, thionyl chloride and chlorosulfonic acid are liquids, while aminosulfonic acid is a solid. Since the reactants include both solids and liquids, they need to be pre-mixed in a batching tank before being added to the reaction vessel. Because this reaction is a liquid-solid phase reaction and is a heterogeneous reaction, the reaction is relatively slow. Existing batching tanks used in production employ a single method of stirring the materials, resulting in uneven mixing and reduced processing efficiency. Even after 24 hours of reaction, there may still be residual aminosulfonic acid solids. Utility Model Content

[0004] The purpose of this invention is to propose a multi-stage temperature-controlled batching reactor, which effectively solves the problems of uneven mixing and low processing efficiency in traditional liquid-solid phase reactions.

[0005] To achieve the above objectives, this utility model employs the following technical means:

[0006] A multi-stage temperature-controlled batching vessel includes a vessel body. Inside the vessel body, several sets of mixing components for mixing materials are arranged vertically. Each mixing component includes a support unit, a mixing guide unit, and a turbulence-inducing unit, which are connected in sequence. Each support unit is equipped with several ultrasonic components. A driving component is installed on the top of the vessel body to drive a stirring component located inside the vessel body and cooperating with each mixing component. Several sets of temperature-controlling components are arranged vertically on the outer wall of the vessel body.

[0007] Furthermore, the hybrid component includes a flow-disrupting unit, a flow-guiding unit, and a support unit.

[0008] The support unit is used to install the ultrasonic component and to leave a mixing area between adjacent mixing components for the mixing component to mix the material. The support unit is installed on the top of the mixing guide unit.

[0009] The mixing and guiding unit includes a mixing and guiding shell, which is a hollow hemispherical shell. The mixing and guiding shell is connected to an annular plate located at the top of the turbulence unit. A vertical guiding pipe is provided at the bottom center of the mixing and guiding shell and runs through the mixing and guiding shell. Several sets of liquid inlets are provided on the side wall of the vertical guiding pipe.

[0010] The turbulence unit includes a base plate, on which several groups of baffles are uniformly arranged in a ring and tangent to the lower surface of the mixing guide shell. Each baffle is connected to the outer wall of the guide vertical pipe. Each baffle divides the upper part of the base plate into several fan-shaped mixing areas, each fan-shaped mixing area corresponding to a liquid inlet. Several groups of guide plate assemblies are arranged on the upper surface of the base plate, each located within a fan-shaped mixing area and cooperating with adjacent baffles. Each guide plate assembly has staggered notches for material flow. Multiple groups of turbulence elements are arranged on the upper surface of the base plate, each located within a fan-shaped mixing area and connected to the mixing guide shell. Liquid outlets that cooperate with each fan-shaped mixing area are provided on the base plate.

[0011] Furthermore, the ultrasonic component includes two sets of ultrasonic transducers symmetrically mounted on the support unit. The surfaces of the two ultrasonic transducers are coated with a polytetrafluoroethylene anti-corrosion layer. The ultrasonic transducers have a specification of 20kHz and a power of 1.5kW.

[0012] Furthermore, to improve the material dispersion and mixing effect, the bottom of the vessel is equipped with three sets of ultrasonic generators with a specific frequency range of 28-68kHz, which effectively reduces the agglomeration rate of solid particles.

[0013] Furthermore, the stirring component includes a stirring shaft, on which a stirring assembly is mounted to cooperate with each mixing component. The stirring assembly includes a first stirring blade and a second stirring blade. The first stirring blade includes a first stirring sleeve mounted on the stirring shaft. The outer wall of the first stirring sleeve is surrounded by a plurality of first stirring rods of the same length. The second stirring blade includes a second stirring sleeve mounted on the stirring shaft. The outer wall of the second stirring sleeve is surrounded by a plurality of second stirring rods of different lengths, the ends of which are tangent to the inner wall of the mixing guide shell.

[0014] Furthermore, the driving component is a geared drive motor that is connected to the stirring shaft.

[0015] Furthermore, the temperature control component includes a hollow sleeve fitted outside the vessel body. The hollow sleeve is provided with an inlet pipe and an outlet pipe communicating with its interior. Each temperature control component is connected to the heat transfer oil circulation system to achieve segmented temperature control, so that the local temperature difference is ≤1℃, avoiding overheating and decomposition.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model's structure constructs a three-dimensional mixing space through vertically arranged mixing components, enabling material flow in different height regions. Combined with driving and stirring components, it forms an axial and radial composite flow field, enhancing solid-liquid shear and turbulence, reducing local agglomeration. Multiple independent temperature control zones are set on the outer side of the vessel body, allowing for dynamic adjustment of the temperature gradient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the product's axial structure in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the product structure in an embodiment of this utility model;

[0020] Figure 3 As described in the embodiments of this utility model Figure 2 Schematic diagram of the cross-sectional structure of section AA;

[0021] Figure 4 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the cooperation structure between the driving component and the stirring component in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the hybrid component structure in an embodiment of the present invention;

[0024] Figure 7 This is an exploded view of the hybrid components in this utility model;

[0025] Figure 8 This is a schematic diagram of the turbulence unit structure in this utility model;

[0026] Figure 9 This is a schematic diagram of the turbulence unit structure in this utility model;

[0027] Figure 10 This is a top view schematic diagram of the turbulence unit structure in this utility model;

[0028] Figure 11 This is a schematic diagram of the hybrid flow guiding unit structure in this utility model. Detailed Implementation

[0029] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. The following embodiments and drawings are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. The drawings only schematically show the parts related to the technical solution of this application, and do not represent their actual structure as a product.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0034] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 the embodiments of this application.

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0036] In this embodiment, a multi-stage temperature-controlled batching vessel includes a vessel body 100. Several mixing components 200 for mixing materials are arranged sequentially inside the vessel body 100. Each mixing component 200 includes a support unit 210, a mixing guide unit 220, and a turbulence-inducing unit 230, which are connected sequentially. Several ultrasonic components 300 are mounted on each support unit 210. A driving component 400 is installed on the top of the vessel body 100. The 00 is used to drive the stirring component 500, which is set inside the vessel body 100 and cooperates with each mixing component 200. Several sets of temperature control components 600 for temperature control are arranged vertically on the outer side wall of the vessel body 100. The structure of this utility model constructs a three-dimensional mixing space through the vertically arranged mixing components 200, realizing the flow of materials in different height areas. In conjunction with the driving component 400 and the stirring component 500, an axial and radial composite flow field is formed, which enhances solid-liquid shear and turbulence, reduces local agglomeration, and sets multiple independent temperature control zones on the outer side of the vessel body 100, which can dynamically adjust the temperature gradient.

[0037] In one or more possible embodiments of this utility model, the mixing component 200 includes a turbulence unit 230, a mixing guide unit 220, and a support unit 210. The support unit 210, the mixing guide unit 220, and the turbulence unit 230 are connected in sequence. A three-dimensional mixing space is constructed by the vertically arranged mixing components 200, so as to realize the flow of materials in different height regions. Under the synergistic effect of the driving component 400 and the mixing component 200, a composite flow field is generated, which enhances solid-liquid shear and turbulence.

[0038] The support unit 210 is used to mount the ultrasonic component 300 and to provide a mixing area between adjacent mixing components 200 for the stirring component 500 to stir the material. The support unit 210 is mounted on the top of the mixing and guiding unit 220. The support unit 210 includes a support ring 211. The outer circumference of the support ring 211 is provided with several sets of evenly arranged and arc-shaped protruding support blocks 212. The lower surface of the support ring 211 is provided with several sets of support rods 213. Each support rod 213 is mounted on the mixing and guiding unit 220. On the annular plate 222 of 0, the aforementioned support blocks 212 and the liquid outlets 235 opened on the bottom plate 231 of the turbulence unit 230 are staggered. The mixing components 200 are fixed in layers by the support units 210 to ensure that there is a stirring area between adjacent mixing units and to avoid material short circuit. Each of the support units 210 is equipped with several ultrasonic components 300. The ultrasonic components 300 generate cavitation effect through high-frequency vibration, break up aminosulfonic acid agglomerates, accelerate the dissolution process, reduce residue, and provide a spatial basis for multi-stage temperature control. Different height areas can be independently temperature controlled.

[0039] The mixing and guiding unit 220 includes a mixing and guiding shell 221, which is a hollow hemispherical shell. The mixing and guiding shell 221 is connected to an annular plate 222 disposed on the top of the turbulence unit 230. A vertically arranged guiding pipe 223 is disposed at the bottom center of the mixing and guiding shell 221, penetrating the mixing and guiding shell 221. Several sets of liquid inlets 224 are opened on the side wall of the guiding pipe 223. By setting up the mixing and guiding unit 220, a vortex zone can be constructed to enhance liquid-solid mixing and mass transfer. The mixing and guiding shell 221 is a hollow hemispherical shell, forming a local vortex space, which can accelerate the liquid circulation flow and expand the solid-liquid contact area. The liquid inlets 224 in the vertically arranged guiding pipe 223 cooperate with the hollow hemispherical shell to form a rotating flow field. The hollow hemispherical shell, together with the guiding pipe 223, forms a local vortex zone to enhance mass transfer and promote the dispersion of solid particles.

[0040] The turbulence unit 230 includes a base plate 231. Several groups of baffle plates 232, arranged in a ring and tangent to the lower surface of the mixing guide shell 221, are uniformly disposed on the base plate 231. Each baffle plate 232 is connected to the outer wall of the guide vertical pipe 223. Each baffle plate 232 divides the upper part of the base plate 231 into several fan-shaped mixing areas, each fan-shaped mixing area corresponding to a liquid inlet 224. Several groups of guide plate assemblies 233, located within the fan-shaped mixing areas and cooperating with adjacent baffle plates 232, are disposed on the upper surface of the base plate 231. Each guide plate assembly 233 has staggered notches for material flow. Multiple sets of flow-dispersing elements 234 are respectively located within each fan-shaped mixing area and connected to the mixing guide shell 221. The base plate 231 has liquid outlets 235 that cooperate with each fan-shaped mixing area. In this embodiment, each baffle plate 232 divides the base plate 231 into multiple fan-shaped areas, corresponding one-to-one with the liquid inlet 224 of the guide vertical pipe 223, ensuring uniform distribution of liquid material to each area. Furthermore, the guide plate assembly 233 has staggered notches, so that the notches of the guide plate assembly 233 are arranged in a spiral staggered pattern, guiding the material to flow continuously in a tortuous manner, prolonging the solid-liquid contact time, and promoting solid dissolution. The flow-dispersing elements 234 and the baffle plates 232 work together mechanically... Disturbing the sedimentation balance of solid particles prevents sulfamic acid from accumulating at the bottom and increases the solid-liquid interface renewal frequency. Referring to the attached figures, an embodiment of the turbulence unit 230 is disclosed. The base plate 231 has six sets of liquid outlets 235, each with an arc-shaped groove design. Six sets of baffle plates 232 are also provided on the base plate 231. Each baffle plate 232 cooperates with the annular plate 222 and the mixing guide shell 221 to support the mixing guide unit 220. The six sets of baffle plates 232 divide the space above the base plate 231 into six fan-shaped mixing regions. Each fan-shaped region corresponds to the liquid inlet 224 on the side wall of the guide vertical pipe 223 in the mixing guide unit 220, guiding the flow... The plate assembly 233 includes four sets of guide plates of different sizes, staggered and perpendicular to adjacent barrier plates 232, which cooperate with the mixing guide unit 220 to form staggered gaps for liquid to flow through. Several flow disturbance elements 234 are installed in the space formed by each guide plate and barrier plate 232. The two sides of the connection between each guide plate and barrier plate 232 are rounded. The flow disturbance elements 234 are evenly distributed on the upper surface of the bottom plate 231 and work together with the barrier plate 232 to effectively break the settling tendency of solid particles and ensure that the material is fully mixed in the entire area. When the material flows through, it is guided by the guide plates to form a spiral flow, which greatly prolongs the solid-liquid contact time and promotes the dissolution of solids.

[0041] In one or more possible embodiments of this utility model, the ultrasonic component 300 includes two sets of ultrasonic transducers 310 symmetrically mounted on the support unit 210. The surfaces of the two ultrasonic transducers 310 are coated with a polytetrafluoroethylene anti-corrosion layer. The ultrasonic transducers 310 have a specification of 20kHz and a power of 1.5kW. They can generate cavitation effect through high-frequency vibration, effectively break up solid particle agglomerates, accelerate dissolution, and reduce the risk of dust pollution through ultrasonic dispersion.

[0042] In one or more possible embodiments of this utility model, in order to improve the material dispersion and mixing effect, the bottom of the vessel 100 is equipped with three sets of ultrasonic generators 110, with a specific frequency range of 28-68kHz, which effectively reduces the agglomeration rate of solid particles.

[0043] In one or more possible embodiments of this utility model, the stirring component 500 includes a stirring shaft 510, and a stirring assembly 520 cooperating with each mixing component 200 is mounted on the stirring shaft 510. The stirring assembly 520 includes a first stirring blade 521 and a second stirring blade 522. The first stirring blade 521 includes a first stirring sleeve 5211 mounted on the stirring shaft 510. A plurality of first stirring rods 5212 of the same length are arranged around the outer wall of the first stirring sleeve 5211. The second stirring blade 522 includes a second stirring sleeve 5221 mounted on the stirring shaft 510. A plurality of second stirring rods 5222 of different lengths are arranged around the outer wall of the second stirring sleeve 5221, and the ends of the second stirring sleeve 5221 are all tangent to the inner wall of the mixing guide shell 221. The first stirring blade 521 and the second stirring blade 522 in the stirring assembly 520 make the stirring process more efficient and perfectly cooperate with the mixing component 200, further improving the mixing efficiency.

[0044] In one or more possible embodiments of this utility model, the driving component 400 is a geared drive motor that is connected to the stirring shaft 510.

[0045] In one or more possible embodiments of this utility model, the temperature control component 600 includes a hollow sleeve 610 sleeved outside the vessel body 100. The hollow sleeve 610 is respectively provided with an inlet pipe 620 and an outlet pipe 630 communicating with its interior. Each temperature control component 600 is connected to a heat transfer oil circulation system to achieve segmented temperature control, so that the local temperature difference is ≤1℃, avoiding overheating and decomposition. The temperature gradient can be dynamically adjusted according to different stages and actual needs to avoid overheating and decomposition of materials, thereby improving product quality and yield.

[0046] The specific embodiments disclosed in this utility model fall within the protection scope of the claims of this utility model and are specific subordinate implementations of the feature parts of this utility model. The protection content of the specific embodiments is merely an explanation of the protection scope of the claims of this utility model. The protection scope of this utility model is not limited to the protection content of the specific embodiments, and the protection content of the specific embodiments should not be construed as a limitation on the protection scope of the claims of this utility model.

Claims

1. A multi-stage temperature-controlled batching vessel, comprising a vessel body (100), characterized in that: The vessel body (100) has several sets of mixing components (200) arranged vertically inside the vessel body (100) for mixing materials. Each mixing component (200) includes a support unit (210), a mixing guide unit (220), and a turbulence unit (230). The support unit (210), the mixing guide unit (220), and the turbulence unit (230) are connected in sequence. Each support unit (210) is equipped with several ultrasonic components (300). A driving component (400) is installed on the top of the vessel body (100). The driving component (400) is used to drive the stirring component (500) arranged inside the vessel body (100) and cooperating with each mixing component (200). Several sets of temperature control components (600) are arranged vertically on the outer wall of the vessel body (100) for temperature control.

2. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The support unit (210) is installed at the top of the mixing and guiding unit (220). The support unit (210) includes a support ring (211). The outer circumference of the support ring (211) is provided with several sets of evenly arranged and arc-shaped support blocks (212). The lower surface of the support ring (211) is provided with several sets of support rods (213). Each support rod (213) is installed on the annular plate (222) of the mixing and guiding unit (220). The support blocks (212) are offset from the liquid outlets (235) opened on the bottom plate (231) of the turbulence unit (230).

3. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The mixing and guiding unit (220) includes a mixing and guiding shell (221), which is a hollow hemispherical shell. The mixing and guiding shell (221) is connected to an annular plate (222) disposed on the top of the turbulence unit (230). A vertical guide pipe (223) is disposed at the bottom center of the mixing and guiding shell (221) and extends through the mixing and guiding shell (221). Several sets of liquid inlets (224) are opened on the side wall of the guide pipe (223).

4. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The turbulence unit (230) includes a base plate (231). Several groups of baffles (232) are uniformly arranged in a ring on the base plate (231) and tangent to the lower surface of the mixing guide shell (221). Each baffle (232) is connected to the outer wall of the guide vertical pipe (223). Each baffle (232) divides the upper part of the base plate (231) into several fan-shaped mixing areas. Each fan-shaped mixing area corresponds to a liquid inlet (224). The upper surface of the 1) is provided with several sets of guide plate assemblies (233) located in the fan-shaped mixing area and cooperating with each adjacent baffle plate (232). The guide plate assembly (233) is provided with staggered notches for material to flow through. The upper surface of the bottom plate (231) is provided with multiple sets of turbulence members (234) located in each fan-shaped mixing area and connected to the mixing guide shell (221). The bottom plate (231) is provided with liquid outlets (235) that cooperate with each fan-shaped mixing area.

5. The multi-stage temperature-controlled batching reactor according to claim 4, characterized in that: The base plate (231) has six sets of liquid outlets (235), and the liquid outlets (235) are designed with arc-shaped slots. The base plate (231) is provided with six sets of baffles (232). The six sets of baffles (232) divide the space above the base plate (231) into six sets of fan-shaped mixing areas. Each fan-shaped area corresponds to the liquid inlet (224) on the side wall of the guide tube (223) in the mixing guide unit (220). The guide plate assembly (233) includes four sets of guide plates of different sizes, which are arranged alternately and perpendicular to the adjacent baffles (232). The two sides of the connection between each guide plate and the baffle (232) are rounded.

6. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The ultrasonic component (300) includes two sets of ultrasonic transducers (310) symmetrically mounted on the support unit (210), and the surfaces of the two ultrasonic transducers (310) are coated with a polytetrafluoroethylene anti-corrosion layer.

7. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The stirring component (500) includes a stirring shaft (510), on which a stirring assembly (520) is mounted to cooperate with each mixing component (200). The stirring assembly (520) includes a first stirring blade (521) and a second stirring blade (522). The first stirring blade (521) includes a first stirring sleeve (5211) mounted on the stirring shaft (510). The outer wall of the first stirring sleeve (5211) is surrounded by a plurality of first stirring rods (5212) of the same length. The second stirring blade (522) includes a second stirring sleeve (5221) mounted on the stirring shaft (510). The outer wall of the second stirring sleeve (5221) is surrounded by a plurality of second stirring rods (5222) of different lengths, the ends of which are tangent to the inner wall of the mixing guide shell (221).

8. The multi-stage temperature-controlled batching reactor according to claim 1, characterized in that: The temperature control component (600) includes a hollow sleeve (610) sleeved outside the vessel body (100), and the hollow sleeve (610) is provided with an inlet pipe (620) and an outlet pipe (630) communicating with its interior.

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