Reaction kettle and production system of bis (fluorosulfonyl) imide

Abstract

The utility model provides a reaction kettle and a production system of imidodisulfuryl fluoride, and relates to the technical field of imidodisulfuryl fluoride production. The reaction kettle comprises a shell and a stirring mechanism, a reaction cavity is defined by the shell; the stirring mechanism comprises a stirring shaft and a cutting net, a containing cavity is formed in the stirring shaft, and the containing cavity communicates with the reaction cavity; the cutting net surrounds the peripheral side of the stirring shaft, and at least part of the cutting net covers the accommodating cavity; the stirring shaft is configured to rotate so that the raw material liquid in the containing cavity can enter the reaction cavity and make contact with the cutting net. According to the reaction kettle and the production system of the imidodisulfuryl fluoride, the raw material liquid is cut through the cutting net, so that the reaction area is increased, the preparation time of the imidodisulfuryl fluoride is favorably saved, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of bis(fluorosulfonyl)imide production technology, and more particularly to a reaction vessel and a bis(fluorosulfonyl)imide production system. Background Technology

[0002] Lithium bisfluorosulfonylimide (BFI) possesses high electrical conductivity and high thermal stability, making it beneficial as an electrolyte in lithium-ion batteries for extending battery life and improving battery safety. Bisfluorosulfonylimide is the main raw material for BFI.

[0003] The existing method for preparing bis(fluorosulfonyl)imide is a batch production method, which involves preheating bis(fluorosulfonyl)imide and hydrogen fluoride separately and then adding them to a reaction vessel. The mixture is stirred by a stirring device to ensure that the two react fully to obtain bis(fluorosulfonyl)imide.

[0004] However, the reaction time required by stirring alone is long, resulting in low production efficiency of bis(fluorosulfonyl)imide. Utility Model Content

[0005] This application provides a reaction vessel and a production system for bis(fluorosulfonyl)imide, which is beneficial to improving the production efficiency of bis(fluorosulfonyl)imide.

[0006] On one hand, this application provides a bis(fluorosulfonyl)imide production system, comprising: a housing defining a reaction chamber; a stirring mechanism including: a stirring shaft having a receiving cavity communicating with the reaction chamber; a cutting screen surrounding the stirring shaft and at least partially covering the receiving cavity; the stirring shaft being configured to rotate to allow the raw material liquid in the receiving cavity to enter the reaction chamber and contact the cutting screen.

[0007] In one possible implementation, a baffle is also included; the reactor has an overflow port for communication with the overflow pipe of the bis(fluorosulfonyl)imide production system; the baffle covers the overflow port and has a gap between it and the overflow port.

[0008] In one possible implementation, a gas distributor is also included, which is connected to the gas supply pipe of the bis(fluorosulfonyl)imide production system, the gas distributor is arranged around the periphery of the cutting mesh, and the gas distributor is used to spray gas toward the cutting mesh.

[0009] In one possible implementation, the stirring mechanism further includes blades; the blades are mounted on the stirring shaft and are used to stir the raw material liquid in the reaction chamber.

[0010] In one possible implementation, the blades are in multiple sets; the multiple sets of blades are distributed along the axial direction of the stirring shaft, and at least two sets of blades have different stirring directions.

[0011] In one possible implementation, the blades are one of a flat blade agitator, an inclined blade agitator, a helical blade agitator, and a turbine agitator, and at least two sets of blades are of different types.

[0012] In one possible implementation, a jacket is also included, which is fitted onto the housing and has a heat exchange chamber for introducing a heat exchange medium to adjust the temperature inside the reaction chamber.

[0013] On the other hand, this application also provides a production system for bis(fluorosulfonyl)imide, including any of the above-mentioned reaction vessels.

[0014] In one possible implementation, it further includes an overflow pipe and a first regulating mechanism; there are at least two reactors, wherein the two reactors are a first reactor and a second reactor; one end of the overflow pipe is connected to the first reactor and the other end of the overflow pipe is connected to the second reactor; the first regulating mechanism is disposed on the overflow pipe and is configured to drive the raw material liquid in the first reactor to be transported to the second reactor through the overflow pipe when the liquid level of the raw material liquid in the first reactor is greater than or equal to a preset liquid level value.

[0015] In one possible implementation, the system further includes a gas supply pipe and a second regulating mechanism; one end of the gas supply pipe is connected to the first reactor and the other end of the gas supply pipe is connected to the second reactor; the second regulating mechanism is located on the gas supply pipe and is configured to, when the gas pressure in the first reactor is greater than or equal to a preset gas pressure value, open the gas supply pipe so that the gas in the first reactor is transported to the second reactor through the gas supply pipe.

[0016] In one possible implementation, a premixing mechanism is also included for mixing multiple stock solutions;

[0017] The premixing mechanism is connected to the first reactor.

[0018] The reaction vessel provided in this application includes a shell and a stirring mechanism. The stirring shaft is at least partially hollow, forming a receiving cavity. The receiving cavity is connected to the feed inlet. After the raw material liquid of bis(chlorosulfonyl)imide and hydrogen fluoride enters the receiving cavity, it flows downward under the action of gravity. After the stirring shaft starts to rotate, the raw material liquid in the receiving cavity is thrown out under the action of centrifugal force and comes into contact with the cutting mesh on the periphery of the stirring shaft. The cutting mesh cuts the raw material liquid into multiple small droplets, thereby increasing the contact area between bis(chlorosulfonyl)imide and hydrogen fluoride, making the reaction between bis(chlorosulfonyl)imide and hydrogen fluoride more complete, which helps to save reaction time and improve the production efficiency of bis(chlorosulfonyl)imide. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 This is a schematic diagram of the structure of the bis(fluorosulfonyl)imide production system provided in the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] Production system for 100-bisfluorosulfonylimide;

[0023] 110 - First Reactor;

[0024] 120 - Second Reactor;

[0025] 121 - Shell; 1211 - Reaction chamber;

[0026] 122-Stirring mechanism; 1221-Stirring shaft; 1222-Cutting mesh; 1223-Impeller blade;

[0027] 123 - Gas distributor;

[0028] 124 - Exhaust pipe;

[0029] 125 - Discharge pipe; 1251 - Third adjusting mechanism;

[0030] 130 - Overflow pipe; 131 - First regulating mechanism;

[0031] 140-baffle;

[0032] 150 - Gas supply pipe; 151 - Second regulating mechanism;

[0033] 160 - Premixing mechanism; 161 - First feed pipe; 162 - Second feed pipe;

[0034] 170-Cladle.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] As shown in the background section, in the prior art, bis(fluorosulfonyl)imide is prepared by a batch production method, in which bis(chlorosulfonyl)imide and hydrogen fluoride are preheated separately and then added to a reaction vessel, where they are stirred to ensure complete reaction and yield bis(fluorosulfonyl)imide. However, the above method requires a long reaction time and has low production efficiency.

[0038] To address the aforementioned technical problems, this application provides a reaction vessel, including a shell and a stirring mechanism. The shell defines a reaction chamber. The stirring mechanism includes a stirring shaft and a cutting mesh, with the stirring shaft having a receiving cavity. The cutting mesh surrounds the periphery of the stirring shaft. The stirring shaft rotates to allow a mixture of dichlorosulfonylimide and hydrogen fluoride in the receiving cavity to enter the reaction chamber and contact the cutting mesh. After entering the receiving cavity, the raw material liquid flows downward under gravity. After the stirring shaft starts rotating, the raw material liquid in the receiving cavity is thrown out under centrifugal force and contacts the cutting mesh on the periphery of the stirring shaft. The cutting mesh cuts the raw material liquid into multiple small droplets, thereby increasing the contact area between dichlorosulfonylimide and hydrogen fluoride, making the reaction between dichlorosulfonylimide and hydrogen fluoride more complete, which is beneficial for further saving reaction time and improving the production efficiency of dichlorosulfonylimide.

[0039] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings:

[0040] See Figure 1 As shown, the bis(fluorosulfonyl)imide production system 100 of this application embodiment includes at least two reaction vessels, wherein the two reaction vessels include a first reaction vessel 110 and a second reaction vessel 120, and the second reaction vessel 120 is connected to the first reaction vessel 110. In preparing bis(fluorosulfonyl)imide, a raw material solution obtained by mixing bis(fluorosulfonyl)imide and hydrogen fluoride is first added to the first reaction vessel 110. After reacting in the first reaction vessel 110 for a certain period of time, the raw material solution is introduced into the second reaction vessel 120, where the reaction continues. Simultaneously, new raw material solution can be injected into the first reaction vessel 110. Thus, the first reaction vessel 110 and the second reaction vessel 120 operate in succession, and bis(fluorosulfonyl)imide is prepared through a continuous production method. This method helps to reduce the time interval between the two processing steps and improves the production efficiency of bis(fluorosulfonyl)imide.

[0041] Furthermore, at least one of the first reaction vessel 110 and the second reaction vessel 120 includes a shell 121 and a stirring mechanism 122; the shell 121 defines a reaction chamber 1211; the stirring mechanism 122 includes a stirring shaft 1221 and a cutting mesh 1222, the stirring shaft 1221 having a receiving cavity that communicates with the reaction chamber 1211; the cutting mesh 1222 surrounds the periphery of the stirring shaft 1221 and at least partially covers the receiving cavity; the stirring shaft 1221 is configured to rotate so that the raw material liquid in the receiving cavity enters the reaction chamber 1211 and contacts the cutting mesh 1222.

[0042] For example, both the first reaction vessel 110 and the second reaction vessel 120 include a shell 121 and a stirring mechanism 122. The raw material liquid is first added to the receiving cavity of the stirring shaft 1221 of the first reaction vessel 110. The stirring shaft 1221 begins to rotate, throwing the raw material liquid out of the receiving cavity. The cutting mesh 1222 cuts the raw material liquid into multiple small droplets, allowing the dichlorosulfonyl imide to react fully with hydrogen fluoride. The small droplets eventually hit the inner wall of the first reaction vessel 110 and slide down to the bottom of the first reaction vessel 110. The stirring shaft 1221 continues to stir, making the reaction more complete. After a certain period, the mixture in the first reaction vessel 110 is transported to the stirring shaft 1221 of the second reaction vessel 120, and the above process is repeated to finally obtain the desired dichlorosulfonyl imide. In this way, cutting the raw material liquid into small droplets by the cutting mesh 1222 increases the contact area between the dichlorosulfonyl imide and hydrogen fluoride, which helps to save production time and increase the yield of dichlorosulfonyl imide.

[0043] In addition, the stirring shaft 1221 has a feed inlet that communicates with the receiving cavity. The feed inlet can be located outside the reaction cavity 1211 to facilitate the transport of raw material liquid, or it can be located inside the reaction cavity 1211 to avoid the leakage of toxic substances and the formation of safety hazards. The position of the feed inlet can be adjusted according to the actual production situation. This application embodiment does not limit this.

[0044] Meanwhile, the cutting mesh 1222 can be a metal wire mesh. Fixing plates are provided on opposite sides of the cutting mesh 1222 along the axial direction of the stirring shaft 1221. The fixing plates are fixedly connected to the stirring shaft 1221. The cutting mesh 1222 is clamped and fixed to the periphery of the stirring shaft 1221 by the two fixing plates, and the cutting mesh 1222 rotates with the stirring shaft 1221. Alternatively, the fixing plates can be rotatably connected to the stirring shaft 1221 and fixedly connected to the reaction chamber 1211. In this way, the cutting mesh 1222 remains stationary when the stirring shaft 1221 rotates. This embodiment does not limit the fixing method of the cutting mesh 1222, as long as it can cut the raw material liquid into several small droplets. The bottom of the receiving chamber can be set to be flush with or slightly higher than the bottom of the cutting mesh 1222 to ensure that all the raw material liquid in the receiving chamber can be ejected.

[0045] See also some of the possible implementation methods. Figure 1 As shown, this embodiment of the application also includes an overflow pipe 130 and a first regulating mechanism 131; one end of the overflow pipe 130 is connected to the first reactor 110, and the other end of the overflow pipe 130 is connected to the second reactor 120; the first regulating mechanism 131 is disposed in the overflow pipe 130, and the first regulating mechanism 131 is configured to drive the raw material liquid in the first reactor 110 to be transported to the second reactor 120 through the overflow pipe 130 when the liquid level of the raw material liquid in the first reactor 110 is greater than or equal to the preset liquid level value.

[0046] In a specific implementation, the first reaction vessel 110 and the second reaction vessel 120 are connected by an overflow pipe 130. When the raw material liquid in the first reaction vessel 110 is greater than or equal to the preset liquid level, continuing to inject raw material liquid into the first reaction vessel 110 may cause excessive resistance to the stirring shaft 1221 or affect the reaction efficiency. Therefore, a portion of the raw material liquid is introduced into the second reaction vessel 120 through the overflow pipe 130 to continue the reaction. If the second reaction vessel 120 is equipped with a stirring shaft 1221, the other end of the overflow pipe 130 is connected to the receiving cavity of the stirring shaft 1221. The first regulating mechanism 131 can be a regulating valve, a feed pump, or other devices. This application embodiment does not limit this; a liquid level switch or other liquid level detection device can be installed in the first reaction vessel 110. The first regulating mechanism 131 can adjust the flow rate of the raw material liquid according to the actual liquid level.

[0047] Meanwhile, the second reactor 120 can also be equipped with a discharge pipe 125 and a third adjustment mechanism 1251 with the same structure as the overflow pipe 130 and the first adjustment mechanism 131. When the liquid level in the second reactor 120 is greater than the preset value, it proves that the reaction is complete. The third adjustment mechanism 1251 discharges the difluorosulfonamide generated in the second reactor 120 through the discharge pipe 125 for use in the next production step.

[0048] See also some of the possible implementation methods. Figure 1 As shown, the embodiment of this application also includes a baffle 140; the first reaction vessel 110 has an overflow port, which is connected to the overflow pipe 130; the baffle 140 covers the overflow port and has a gap with the overflow port.

[0049] Understandably, the mixture ejected from the containment cavity will first hit the inner wall of the reaction chamber 1211, and then slide down the inner wall to the bottom of the reaction chamber 1211. Therefore, in order to prevent the mixture on the inner wall from directly entering the second reaction vessel 120 through the overflow pipe 130 when flowing through the overflow port, resulting in insufficient reaction, a baffle 140 is set on the overflow port. In this way, only the raw material liquid that has been thoroughly stirred can enter the overflow pipe 130 through the bottom of the baffle 140, thereby ensuring that dichlorosulfonylimide and hydrogen fluoride react fully, which is beneficial to improving the yield of dichlorosulfonylimide.

[0050] Similarly, if a discharge pipe 125 is provided on the second reactor 120, a baffle 140 with the same structure can also be provided at the discharge port corresponding to the discharge pipe 125 to prevent unreacted raw material liquid from being discharged from the discharge pipe 125.

[0051] See also some of the possible implementation methods. Figure 1 As shown, this embodiment of the application also includes a gas supply pipe 150 and a second regulating mechanism 151; one end of the gas supply pipe 150 is connected to the first reaction vessel 110, and the other end of the gas supply pipe 150 is connected to the second reaction vessel 120; the second regulating mechanism 151 is disposed on the gas supply pipe 150, and the second regulating mechanism 151 is configured to, when the gas pressure in the first reaction vessel 110 is greater than or equal to a preset gas pressure value, open the gas supply pipe 150 so that the gas in the first reaction vessel 110 is transported to the second reaction vessel 120 through the gas supply pipe 150.

[0052] In some embodiments, a certain amount of hydrogen chloride gas is generated during the reaction of dichlorosulfonamide with hydrogen fluoride, and some of the hydrogen fluoride is converted from liquid to gas during the reaction. This causes the gas pressure in the first reaction vessel 110 to gradually increase. In order to avoid the safety hazard caused by excessive gas pressure in the first reaction vessel 110, a pressure sensor or other gas pressure detection device can be installed in the first reaction vessel 110. When the gas pressure is greater than or equal to the preset gas pressure value, the second regulating mechanism 151 opens the gas supply pipe 150 to deliver the mixed gas of hydrogen chloride and hydrogen fluoride to the second reaction vessel 120, thereby ensuring the balance of gas pressure.

[0053] Similarly, an exhaust pipe 124 with the same structure as the gas supply pipe 150 and the second regulating mechanism 151 can also be installed on the second reactor 120. When the gas pressure inside the second reactor 120 is too high, the internal gas will be discharged into the waste gas collection device through the exhaust pipe 124.

[0054] See also some of the possible implementation methods. Figure 1As shown, both the first reaction vessel 110 and the second reaction vessel 120 in this embodiment of the application are provided with a stirring mechanism 122; the second reaction vessel 120 is also provided with a gas distributor 123, which is connected to the other end of the gas supply pipe 150. The gas distributor 123 is arranged around the cutting mesh 1222 and is used to spray gas toward the cutting mesh 1222.

[0055] In practice, hydrogen fluoride is partially converted from a liquid to a gaseous state within the first reactor 110. The gaseous hydrogen fluoride is then transported to the second reactor 120 via a gas pipe 150. This allows the hydrogen fluoride to continue reacting with the raw material liquid in the second reactor 120, thus enabling the reuse of hydrogen fluoride, improving its utilization rate, and ultimately increasing the yield of difluorosulfonyl imide. To ensure sufficient contact between the gaseous hydrogen fluoride and the raw material liquid, the gas distributor 123 and the cutting mesh 1222 are positioned correspondingly. This ensures that the small droplets cut by the cutting mesh 1222 come into contact with the gas ejected from the gas distributor 123, effectively increasing the contact area between the raw material liquid and the mixed gas, thus promoting a more complete reaction.

[0056] The gas distributor 123 can have multiple air jet holes on the side facing the cutting mesh 1222 to spray air towards the cutting mesh 1222, or it can be equipped with multiple nozzles or other devices to increase the pressure of the gas ejection. This application embodiment does not limit this, as long as the gas in the gas supply pipe 150 can be ejected towards the cutting mesh 1222.

[0057] See also some of the possible implementation methods. Figure 1 As shown, the stirring mechanism 122 in this embodiment of the application also includes a blade 1223; the blade 1223 is disposed on the stirring shaft 1221 and is used to stir the raw material liquid in the reaction chamber 1211.

[0058] Understandably, after the raw material liquid enters the reaction chamber 1211, the stirring shaft 1221 continues to rotate, and the stirring of the raw material liquid by the blade 1223 can make the dichlorosulfonamide and hydrogen fluoride react fully, which is beneficial to improving the reaction efficiency.

[0059] See also some of the possible implementation methods. Figure 1 As shown, the impeller 1223 of this application embodiment has multiple sets; the multiple sets of impeller 1223 are distributed along the axial direction of the stirring shaft 1221, and at least two sets of impeller 1223 have different stirring directions.

[0060] In some embodiments, the multiple sets of blades 1223 include at least axial flow blades 1223 and radial flow blades 1223. The main discharge direction of the axial flow blades 1223 is along the axial direction of the stirring shaft 1221, and the main discharge direction of the radial flow blades 1223 is along the radial direction of the stirring shaft 1221. In this way, the raw material liquid in the reaction chamber 1211 can circulate from different directions, thereby ensuring that dichlorosulfonylimide and hydrogen fluoride react fully and improving the production efficiency of dichlorosulfonylimide. The specific number of blades 1223 can be adjusted according to factors such as the capacity of the reaction chamber 1211, and this application embodiment does not limit it.

[0061] See also some of the possible implementation methods. Figure 1 As shown, the blade 1223 in this embodiment is one of a flat blade impeller, an inclined blade impeller, a spiral blade impeller, and a turbine impeller, and at least two sets of blades 1223 are of different types.

[0062] Among them, the flat blade impeller, the inclined blade impeller and the spiral blade impeller are axial flow impellers 1223, and the turbine impeller is a radial flow impeller 1223. By selecting different types of impellers 1223, the stirring shaft 1221 can discharge liquid in different directions at the same time, which is conducive to promoting the full mixing of reaction raw materials.

[0063] See also some of the possible implementation methods. Figure 1 As shown, the embodiments of this application also include a premixing mechanism 160 for mixing multiple stock solutions; the premixing mechanism 160 is connected to the first reaction vessel 110.

[0064] In a specific implementation, dichlorosulfonamide and hydrogen fluoride can be injected into the premixing mechanism 160 through the first feed pipe 161 and the second feed pipe 162. The premixing mechanism 160 can be a pipeline mixer, and this application embodiment does not limit this. After the dichlorosulfonamide and hydrogen fluoride are initially mixed in the premixing mechanism 160, they are injected into the receiving cavity of the stirring shaft 1221, which is beneficial to further increase the contact area between dichlorosulfonamide and hydrogen fluoride, thereby improving the reaction efficiency.

[0065] Furthermore, the premixing mechanism 160 and the stirring shaft 1221 can be connected by a material transfer mechanism to ensure that the premixing mechanism 160 remains stationary when the stirring shaft 1221 rotates, thus avoiding the problem of pipeline entanglement when injecting raw material liquid into the containment cavity.

[0066] See also some of the possible implementation methods. Figure 1 As shown, at least one of the first reactor 110 and the second reactor 120 in this embodiment of the application is further provided with a jacket 170; the jacket 170 is sleeved on the shell 121, and the jacket 170 has a heat exchange chamber for inputting heat exchange medium to adjust the temperature in the reaction chamber 1211.

[0067] It is understandable that by injecting a hot or cold medium into the jacket 170, the shell 121 can be uniformly heated or cooled, thereby adjusting the temperature inside the reaction chamber 1211 to a temperature suitable for the chemical reaction and increasing the reaction rate of dichlorosulfonamide and hydrogen fluoride.

[0068] In summary, the workflow of the bis(fluorosulfonyl)imide production system 100 provided in this application embodiment is as follows: First, a certain amount of hydrogen fluoride or a mixture of hydrogen fluoride and bis(fluorosulfonyl)imide is added to the reaction chamber 1211 of the first reaction vessel 110 and the second reaction vessel 120 to avoid the stirring shaft 1221 from running dry. Then, liquid hydrogen fluoride and bis(fluorosulfonyl)imide are injected into the premixing mechanism 160 to perform preliminary mixing. The premixing mechanism 160 injects the mixed raw material liquid into the receiving chamber of the stirring shaft 1221 of the first reaction vessel 110. The stirring shaft 1221 starts to rotate, causing the raw material liquid to be thrown out and cut by the cutting mesh 1222. When the liquid level of the raw material liquid in the reaction chamber 1211 of the first reaction vessel 110 is greater than or equal to the preset liquid level value, the first regulating mechanism 131 adjusts the raw material liquid... The raw material liquid is conveyed through the overflow pipe 130 to the receiving cavity of the stirring shaft 1221 of the second reactor 120. While the raw material liquid in the second reactor 120 is thrown out, the mixed gas of hydrogen fluoride and hydrogen chloride in the first reactor 110 is sprayed onto the cutting mesh 1222 through the gas delivery pipe 150 and the gas distributor 123, so that the mixed gas and the raw material liquid can be fully contacted, realizing the secondary utilization of hydrogen fluoride. After stirring for a certain period of time, the bis(fluorosulfonyl)imide is discharged through the discharge pipe 125 of the second reactor 120, completing the preparation of bis(fluorosulfonyl)imide. The continuous production method improves the preparation efficiency of bis(fluorosulfonyl)imide. At the same time, the structure of the cutting mesh 1222 and other structures makes the reaction between hydrogen fluoride and bis(fluorosulfonyl)imide more complete, improving the yield of bis(fluorosulfonyl)imide, which is conducive to further improving the production efficiency of bis(fluorosulfonyl)imide.

[0069] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0070] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0071] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0072] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0073] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0074] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0075] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0076] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0077] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A reaction vessel for a difluorosulfonyl imide production system (100), characterized in that, include: The housing (121) defines the reaction chamber (1211). A stirring mechanism (122) comprising: A stirring shaft (1221) has a receiving cavity inside, which is connected to the reaction chamber (1211); A cutting mesh (1222) is arranged around the stirring shaft (1221) and at least partially covers the receiving cavity; The stirring shaft (1221) is configured to rotate so that the raw material liquid in the containment cavity enters the reaction chamber (1211) and comes into contact with the cutting mesh (1222).

2. The reaction vessel according to claim 1, characterized in that, It also includes a baffle (140); The reactor has an overflow port, which is used to connect to the overflow pipe (130) of the difluorosulfonyl imide production system (100); The baffle (140) covers the overflow port and has a gap with the overflow port.

3. The reaction vessel according to claim 1, characterized in that, It also includes a gas distributor (123); The gas distributor (123) is used to communicate with the gas supply pipe (150) of the bis(fluorosulfonyl)imide production system (100), the gas distributor (123) is arranged around the cutting mesh (1222), and the gas distributor (123) is used to spray gas toward the cutting mesh (1222).

4. The reaction vessel according to claim 1, characterized in that, The stirring mechanism (122) also includes blades (1223); The blade (1223) is mounted on the stirring shaft (1221) and is used to stir the raw material liquid in the reaction chamber (1211).

5. The reaction vessel according to claim 4, characterized in that, The blades (1223) have multiple sets; Multiple sets of the blades (1223) are distributed along the axial direction of the stirring shaft (1221), and at least two sets of blades (1223) have different stirring directions.

6. The reaction vessel according to claim 5, characterized in that, The blade (1223) is one of a flat blade agitator, an inclined blade agitator, a spiral blade agitator, and a turbine agitator, and at least two sets of blades (1223) are of different types.

7. The reaction vessel according to any one of claims 1-6, characterized in that, It also includes a jacket (170); The jacket (170) is fitted onto the shell (121), and the jacket (170) has a heat exchange chamber for inputting heat exchange medium to adjust the temperature in the reaction chamber (1211).

8. A production system (100) for bis(fluorosulfonyl)imide, characterized in that, The reactor includes the reactor according to any one of claims 1-7, wherein there are at least two reactors, wherein the two reactors are a first reactor (110) and a second reactor (120).

9. The bis(fluorosulfonyl)imide production system (100) according to claim 8, characterized in that, It also includes an overflow pipe (130) and a first regulating mechanism (131); One end of the overflow pipe (130) is connected to the first reactor (110), and the other end of the overflow pipe (130) is connected to the second reactor (120); The first regulating mechanism (131) is located in the overflow pipe (130), and the first regulating mechanism (131) is configured to drive the raw material liquid in the first reactor (110) to be transported to the second reactor (120) through the overflow pipe (130) when the liquid level of the raw material liquid in the first reactor (110) is greater than or equal to the preset liquid level value; And / or, also includes a gas delivery pipe (150) and a second regulating mechanism (151); One end of the gas supply pipe (150) is connected to the first reactor (110), and the other end of the gas supply pipe (150) is connected to the second reactor (120); The second regulating mechanism (151) is located on the gas supply pipe (150), and the second regulating mechanism (151) is configured to open the gas supply pipe (150) when the gas pressure in the first reactor (110) is greater than or equal to the preset gas pressure value so that the gas in the first reactor (110) is transported to the second reactor (120) through the gas supply pipe (150).

10. The bis(fluorosulfonyl)imide production system (100) according to claim 8, characterized in that, It also includes a premixing mechanism (160) for mixing multiple stock solutions; The premixing mechanism (160) is connected to the first reactor (110).

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