Sulfuryl fluoride production device and battery production line

Abstract

The utility model relates to the technical field of sulfuryl fluoride production and processing, and particularly discloses a sulfuryl fluoride production device and a battery production line, the sulfuryl fluoride production device comprises two reaction devices; each reaction device comprises a furnace body and is further provided with a feeding channel, a discharging channel and an exhaust flow channel which are independent from one another, and the exhaust flow channel extends from the air inlet end to the air outlet end from bottom to top; one of the two reaction devices is a first reaction device, and the other reaction device is a second reaction device; a feeding channel of the first reaction device is used for introducing metal fluoride and oxysulfide into a furnace body of the first reaction device, and a discharging channel of the first reaction device is used for discharging reaction products; the feeding channel of the second reaction device is communicated with the discharging channel of the first reaction device, the furnace body of the second reaction device is used for calcining reaction products to obtain sulfuryl fluoride, and the exhaust runner is used for discharging sulfuryl fluoride. Compared with the prior art, the method has the advantages that dust wrapped by produced sulfuryl fluoride can be reduced, and the concentration of the sulfuryl fluoride can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of sulfuryl fluoride production and processing, and particularly to a sulfuryl fluoride production device and a battery production line. Background Art

[0002] Sulfuryl fluoride (SO 2 F 2 ) is an important class of inorganic compounds, which is a colorless and odorless gas at normal temperature and pressure. Sulfuryl fluoride can be used as an insecticide. However, the purity of sulfuryl fluoride prepared by using the existing sulfuryl fluoride production device is relatively low. Summary of the Utility Model

[0003] In view of the above problems, the present application provides a sulfuryl fluoride production device and a battery production line, which solve the problem that the purity of sulfuryl fluoride prepared by the existing sulfuryl fluoride production device is relatively low.

[0004] A first aspect of the present application provides a sulfuryl fluoride production device, including: two reaction devices; each reaction device includes a furnace body, and each reaction device also has an independent feed channel, a discharge channel, and an exhaust flow channel, and the intake end to the outlet end of the exhaust flow channel extends upward from bottom to top; one of the two reaction devices is a first reaction device and the other is a second reaction device; the feed channel of the first reaction device is used to introduce metal fluoride and thionyl chloride oxide into the furnace body of the first reaction device, so that the metal fluoride and thionyl chloride oxide react in the furnace body of the first reaction device to obtain a reaction product, and the discharge channel of the first reaction device is used to discharge the reaction product; the feed channel of the second reaction device is communicated with the discharge channel of the first reaction device and is used to introduce the reaction product into the furnace body of the second reaction device, the furnace body of the second reaction device is used to calcine the reaction product to obtain sulfuryl fluoride, the exhaust flow channel of the second reaction device is used to discharge sulfuryl fluoride, and the discharge channel of the second reaction device is used to discharge reaction by-products.

[0005] The sulfuryl fluoride production device in the present application includes two reaction devices, and the two reactions for preparing sulfuryl fluoride are carried out in the two reaction devices respectively. The solid metal fluoride enters the furnace body of the first reaction device along the feed channel of the first reaction device, and the gaseous sulfuryl fluoride is discharged along the exhaust flow channel of the second reaction device. The feed channel of the first reaction device and the exhaust flow channel of the second reaction device are separated, so that the sulfuryl fluoride will not converge with the solid metal fluoride when flowing out. Moreover, the feed channel, the discharge channel, and the exhaust flow channel of the second reaction device are also independent of each other, so that the sulfuryl fluoride can be blocked from contacting the solid reaction product and the solid reaction by-product to a certain extent. Generally speaking, compared with the related art, the sulfuryl fluoride produced has less entrained dust, thereby improving the concentration of sulfuryl fluoride.

[0006] In addition, since the two reaction devices are independent equipment and can operate simultaneously, adjacent batches can be carried out simultaneously, thus shortening the production cycle, improving the production efficiency and production capacity.

[0007] In some embodiments of the present application, each reaction device further includes a driving device, which is in transmission connection with the corresponding furnace body, and the driving device is used to drive the corresponding furnace body to rotate around its own central axis.

[0008] By designing the reaction device to include a driving device, the furnace bodies of the two reaction devices can rotate, which is beneficial to shaking the materials in the furnace bodies of the two reaction devices, enabling the materials in the furnace bodies of the two reaction devices to be heated evenly, and thus being beneficial to improving the reaction efficiency.

[0009] In some embodiments of the present application, each reaction device further includes a crusher, which is housed in the corresponding furnace body to break up the agglomerated materials in the corresponding furnace body. The crusher can crush the agglomerated materials, enabling the materials to react fully, improving the reaction effect, which is beneficial to improving the production efficiency and quality of sulfuryl fluoride.

[0010] In some embodiments of the present application, the crusher is arranged in the corresponding furnace body in a free-body manner. In this way, there is no need to additionally set a driving source to drive the movement of the crusher, which is beneficial to simplifying the structure of the reaction device.

[0011] Moreover, the crusher freely arranged in the furnace body rotates with the rotation of the furnace body. Coupled with the gravitational force of the crusher, the crusher will collide with the inner wall of the furnace body, and can also break the scale on the inner wall of the furnace body, reducing the adverse effect of the scale on the heat transfer efficiency of the furnace body and improving the reaction effect. On this basis, there is no need to stop the machine to clean the furnace body, and the sulfuryl fluoride production equipment can operate continuously with high production efficiency.

[0012] In some embodiments of the present application, the crusher includes a first annular plate, a second annular plate, a connecting rod and a spiral part. The first annular plate and the second annular plate are coaxially and oppositely arranged. The central axis of the first annular plate is parallel to the central axis of the furnace body. The first annular plate is connected to the second annular plate through the connecting rod. The spiral part is wound around the connecting rod, and the central axis of the spiral part is collinear with the central axis of the first annular plate.

[0013] In some embodiments of the present application, the furnace body of each reaction device includes a first reaction chamber and a second reaction chamber. The first reaction chamber and the second reaction chamber are arranged in sequence along the axial direction of the furnace body and communicate with each other. The first reaction chamber is close to the furnace head of the furnace body, and the second reaction chamber is close to the furnace tail of the furnace body. The crusher is housed in the first reaction chamber.

[0014] The crusher is arranged in the first reaction chamber and is close to the burner head. In this way, the agglomerated materials can be crushed as early as possible so that the crushed materials can participate in the reaction as soon as possible, promoting the full reaction of the materials and being beneficial to improving the production efficiency.

[0015] In some embodiments of the present application, each reaction device further includes a wall scraper, and the wall scraper is received in the corresponding furnace body; the wall scraper can move relative to the furnace body as the furnace body rotates to scrape the inner wall of the corresponding furnace body.

[0016] The wall scraper freely arranged in the furnace body moves as the furnace body rotates. Coupled with the gravity of the wall scraper, the wall scraper will collide with the inner wall of the furnace body, enabling the scale attached to the inner wall of the furnace body to be scraped off. In this way, the adverse effect of the scale on the heat transfer efficiency of the furnace body can be reduced, and the reaction effect can be improved. On this basis, there is no need to stop the machine to clean the furnace body, and the sulfuryl fluoride production equipment can operate continuously with high production efficiency.

[0017] In some embodiments of the present application, the wall scraper is received in the second reaction chamber; a partition is provided between the first reaction chamber and the second reaction chamber, and the partition can prevent the crusher from entering the second reaction chamber and can prevent the wall scraper from entering the first reaction chamber.

[0018] When a partition is provided between the first reaction chamber and the second reaction chamber and the crusher is also received in the first reaction chamber in a free state, the partition can prevent the freely arranged crusher and the wall scraper from colliding and being damaged.

[0019] In some embodiments of the present application, rib groups are protrudingly arranged on the inner wall of the furnace body, and the rib groups include at least one rib. During the rotation of the furnace body, the ribs protruding from the inner wall of the furnace body can lift the materials in contact with them inside the furnace body to a certain height, causing the materials to be lifted. This helps to improve the reaction effect.

[0020] In some embodiments of the present application, the rib groups include a plurality of ribs arranged at intervals along the axial direction of the furnace body and / or a plurality of ribs arranged at intervals along the circumferential direction of the furnace body. By setting in this way, the number of ribs is increased, so that as many materials as possible can be lifted, further improving the reaction effect, and thus the production efficiency and product quality can be improved.

[0021] In some embodiments of the present application, the rib has a length direction, and the length direction is parallel to or inclined to the axial direction of the furnace body. The dimension of the rib along the length direction is greater than or equal to 15 cm and less than or equal to 25 cm; and / or, the rib has a width direction, and the width direction is parallel to or inclined to the radial direction of the furnace body. The dimension of the rib along the width direction is greater than or equal to 8 cm and less than or equal to 12 cm.

[0022] In some embodiments of the present application, each reaction device further includes a feed cylinder and a feed conveying mechanism. One end of the feed cylinder is connected to the furnace head of the furnace body, and the furnace body can rotate relative to the feed cylinder around its own central axis; the feed cylinder is provided with a feed port, and the feed port communicates with the furnace body to form a feed channel.

[0023] With this design, the feed channel is far from the discharge channel and the exhaust flow channel located at the rear end of the furnace tail, so that the sulfuryl fluoride flowing out along the exhaust flow channel will not be mixed with the materials in the feed channel, reducing the probability of sulfuryl fluoride carrying the materials in the feed channel out, and helping to increase the concentration of sulfuryl fluoride.

[0024] In some embodiments of the present application, one end of the feed cylinder is hermetically connected to the furnace head of the furnace body. This can improve the sealing of the internal space of the furnace body and prevent the gas in the external environment from entering the furnace body and affecting the concentration of sulfuryl fluoride.

[0025] In some embodiments of the present application, each reaction device further includes a discharge pipe. The discharge pipe is connected to the furnace tail of the furnace body, and the furnace body can rotate relative to the discharge pipe around its own central axis; the discharge pipe is provided with an air outlet and a discharge outlet. The air outlet communicates with the furnace body to form an exhaust flow channel; the discharge outlet communicates with the furnace body to form a discharge channel.

[0026] By designing that the reaction device further includes a discharge pipe, it helps to smoothly discharge the materials obtained by the reaction while not affecting the rotation of the furnace body.

[0027] In some embodiments of the present application, the central axis of the furnace body extends in the horizontal direction, and both axial ends of the furnace body are open.

[0028] With this design, the furnace body is horizontal. Compared with a vertical furnace body, the center of gravity of the horizontal furnace body can be lower, and the stability of the horizontal furnace body is higher, so that it can rotate stably.

[0029] In some embodiments of the present application, each reaction device further includes a first limiting wheel and a second limiting wheel. The first limiting wheel abuts against the furnace head of the furnace body, and the second limiting wheel abuts against the furnace tail of the furnace body. The first limiting wheel and the second limiting wheel can rotate around a rotation axis extending in the horizontal direction, and the rotation axis is perpendicular to the central axis of the furnace body.

[0030] With this design, firstly, the first positioning wheel and the second positioning wheel respectively play the role of positioning the furnace head and the furnace tail. Secondly, the two reaction conditions for preparing sulfuryl fluoride both require high temperature, and the furnace body is prone to expansion due to high temperature. By using the abutting relationship between the first positioning wheel and the second positioning wheel and the furnace body, the expansion of the furnace body can be restricted to reduce excessive deformation of the furnace body.

[0031] The second aspect of the present application proposes a battery production line, including: any sulfuryl fluoride production device proposed in the first aspect of the present application.

[0032] The above description is only an overview of the technical solution of this application. In order to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specific embodiments of this application are specifically given. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 FIG. 1 schematically shows a schematic diagram of a sulfuryl fluoride production device in the related art;

[0034] Figure 2 FIG. 2 schematically shows a structural schematic diagram of a reaction device according to an embodiment of the present application;

[0035] Figure 3 FIG. 3 schematically shows a top view of a crusher according to an embodiment of the present application;

[0036] Figure 4 For Figure 3 the front view of the crusher shown in FIG. 4;

[0037] Figure 5 FIG. 5 schematically shows a schematic diagram of a scraping device according to an embodiment of the present application;

[0038] Figure 6 (A) and Figure 6 (B) are respectively a longitudinal sectional view of a furnace body according to an embodiment of the present application and a longitudinal sectional view of a furnace body according to another embodiment of the present application;

[0039] Figure 7 (A) and Figure 7 (B) are respectively a transverse sectional view of a furnace body according to an embodiment of the present application and a transverse sectional view of a furnace body according to another embodiment of the present application.

[0040] DESCRIPTION OF THE REFERENCE NUMERALS:

[0041] 100, reaction device;

[0042] 10, furnace body; 11, first reaction chamber; 12, second reaction chamber; 13, first cylinder section; 14, second cylinder section; 15, first positioning wheel; 16, second positioning wheel; 17, rib plate;

[0043] 20, driving device; 21, driving motor; 22, driving idler; 23, driven idler;

[0044] 30, crusher; 31, first annular plate; 32, second annular plate; 33, spiral part; 34, connecting rod;

[0045] 40, scraping device; 41, shaft rod; 42, spiral blade;

[0046] 50. Feed cylinder; 51. Feed inlet;

[0047] 60. Feed conveying mechanism;

[0048] 70. Discharge pipe; 71. Discharge outlet; 72. Air outlet;

[0049] 80. Cylinder. Detailed implementation manner

[0050] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0052] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0053] Referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0054] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0055] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0056] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0057] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0058] In some related technologies, as Figure 1 shown, the sulfuryl fluoride production device includes a vertical furnace body 10'. Metal fluoride enters the vertical furnace body 10' from the feed port 51' at the top of the vertical furnace body 10', and sulfur oxychloride enters the vertical furnace body 10' from the feed port at the bottom of the vertical furnace body 10'. Then, the solid metal fluoride and the liquid sulfur oxychloride undergo a primary reaction inside the furnace body 10' to obtain reaction products. The vertical furnace body 10' is heated to a high temperature to calcine the reaction products, so that the reaction products undergo a secondary reaction to obtain sulfuryl fluoride and reaction by-products. Sulfuryl fluoride is a gas, and the gaseous sulfuryl fluoride is discharged from the top port of the vertical furnace body 10', and the solid reaction by-products are discharged from the discharge port 71' at the bottom of the vertical furnace body 10'. Since the primary reaction and the secondary reaction occur in the same vertical furnace body 10', and the gaseous sulfuryl fluoride will converge with the metal fluoride during the upward flow to be discharged from the vertical furnace body 10', this will cause some metal fluoride to be carried during the discharge of sulfuryl fluoride, resulting in the problem of low purity of sulfuryl fluoride. Moreover, when using this sulfuryl fluoride production device to produce sulfuryl fluoride, after sulfuryl fluoride is produced, it is necessary to continue feeding materials into the furnace body 10' to start the next batch of production, with a slow production rhythm, low production efficiency and low production capacity.

[0059] In this application, the sulfuryl fluoride production device is designed to include two reaction devices. The two reactions for producing sulfuryl fluoride are carried out in the two reaction devices respectively. The two reaction devices can operate simultaneously, enabling two adjacent batches to proceed simultaneously, shortening the production cycle, and improving production efficiency and capacity. At the same time, the feed channel of the first reaction device and the exhaust channel of the second reaction device are separated, which can prevent sulfuryl fluoride from converging with solid metal fluoride when flowing out. Moreover, since the feed channel, discharge channel, and exhaust channel of the reaction device are independent of each other, when sulfuryl fluoride flows out in the second reaction device, there are also fewer solid reaction products and solid reaction by-products flowing out in contact with sulfuryl fluoride, and the dust carried by sulfuryl fluoride is less, thereby increasing the concentration of sulfuryl fluoride.

[0060] In some embodiments of this application, a sulfuryl fluoride production device is proposed for preparing sulfuryl fluoride. It is understandable that the sulfuryl fluoride prepared by using the sulfuryl fluoride production device of this application is not limited to being used as an insecticide, and can also be used as a fungicide, fumigant, etc. It can also be used as a raw material for synthesizing lithium bis(fluorosulfonyl)imide, and lithium bis(fluorosulfonyl)imide can be an electrolyte material for batteries.

[0061] The sulfuryl fluoride production device includes two reaction devices 100. Please refer to Figure 2 , each reaction device 100 includes a furnace body 10. Each reaction device 100 also has independent feed channels, discharge channels, and exhaust channels. The intake end to the outlet end of the exhaust channel extends upward from bottom to top. One of the two reaction devices 100 is the first reaction device, and the other is the second reaction device. The feed channel of the first reaction device is used to introduce metal fluoride and thionyl chloride into the furnace body 10 of the first reaction device, so that the metal fluoride and thionyl chloride react in the furnace body 10 of the first reaction device to obtain reaction products. The discharge channel of the first reaction device is used to discharge the reaction products. The feed channel of the second reaction device is connected to the discharge channel of the first reaction device and is used to introduce the reaction products into the furnace body 10 of the second reaction device. The furnace body 10 of the second reaction device is used to calcine the reaction products to obtain sulfuryl fluoride, and the exhaust channel of the second reaction device is used to discharge sulfuryl fluoride.

[0062] Taking the structure of one of the reaction devices 100 as an example, the feed channel, discharge channel, and exhaust channel are all connected to the furnace body 10. The fact that the feed channel, discharge channel, and exhaust channel are independent of each other means that there is no common part among the three.

[0063] Among them, the metal can refer to barium, that is, the metal fluoride can be barium fluoride; the metal can also refer to sodium, that is, the metal fluoride can be sodium fluoride. The metal fluoride is in a solid state, specifically in powder form or powder-like form.

[0064] An exemplary working process of the sulfuryl fluoride production device in this embodiment is as follows:

[0065] Introduce metal fluoride and sulfur oxychloride into the feed channel of the first reaction device. The metal fluoride and sulfur oxychloride enter the furnace body 10 of the first reaction device along the feed channel of the first reaction device. Control the furnace body 10 of the first reaction device to heat up to 40°C to 180°C. Then, the metal fluoride and sulfur oxychloride react in the furnace body 10 of the first reaction device, and the reaction formula is represented by the following formula (I), obtaining the reaction product as metal fluorosulfonate X M (F n S x O y Cl z ), and the metal fluorosulfonate is in a solid state, specifically in powder form or powder-like form. Among them, sulfur oxychloride can be in a liquid state or a gaseous state.

[0066] X M F n +S x O y Cl z =X M (F n S x O y Cl z (Formula (I))

[0067] The reaction product X M (F n S x O y Cl z ) is discharged along the discharge channel of the first reaction device, and then enters the feed channel of the second reaction device connected thereto. It enters the furnace body 10 of the second reaction device along the feed channel of the second reaction device. Control the furnace body 10 of the second reaction device to heat up to 200°C to 700°C. The reaction product X M (F n S x O y Cl z ) is subjected to high-temperature calcination in the furnace body 10 of the second reaction device and then reacts, and the reaction formula is represented by the following formula (II), obtaining sulfuryl fluoride SO 2 F 2 and reaction by-products. The gaseous sulfuryl fluoride is discharged along the exhaust flow channel of the second reaction device. Since the exhaust flow channel extends from bottom to top, the gaseous sulfuryl fluoride flows upward during the discharge process. The reaction by-products include metal sulfate X m1 S x-n / 2 O y-n and metal chloride X m2 Cl z, both the metal sulfate and the metal chloride are in a solid state, specifically in the form of powder or powder body, and the solid reaction by-products are discharged along the discharge channel of the second reaction device. Among them, m1 + m2 = M.

[0068]

[0069] In the present application, the sulfuryl fluoride production device includes two reaction devices 100. The two reactions for producing sulfuryl fluoride are respectively carried out in the two reaction devices 100. The solid metal fluoride enters the furnace body 10 of the first reaction device along the feed channel of the first reaction device, and the gaseous sulfuryl fluoride is discharged along the exhaust flow channel of the second reaction device. The feed channel of the first reaction device and the exhaust flow channel of the second reaction device are separated and there is no shared part, so that the sulfuryl fluoride will not converge with the solid metal fluoride when flowing out. Moreover, the feed channel, the discharge channel and the exhaust flow channel of the second reaction device are also independent of each other, so that to a certain extent, the contact between the sulfuryl fluoride and the solid reaction product and the solid reaction by-products (i.e., metal sulfate and metal chloride) can be blocked. Generally speaking, compared with the related art, the sulfuryl fluoride produced can carry less dust, thereby increasing the concentration of sulfuryl fluoride.

[0070] It is also worth pointing out that by using the sulfuryl fluoride production device of the present application, since the two reaction devices 100 are independent devices, the two reaction devices 100 can operate simultaneously. After the reaction product is exported to the second reaction device, the first reaction device can be fed, so that two adjacent batches can be carried out simultaneously, shortening the production cycle and improving the production efficiency and production capacity.

[0071] In some embodiments of the present application, the gas in the furnace body 10 of the first reaction device can flow out along the exhaust flow channel of the first reaction device. Specifically, the reaction device 100 can further include a negative pressure driving device 20, and the negative pressure driving device 20 is connected to the exhaust flow channel to drive the gas in the corresponding furnace body 10 to flow out.

[0072] In the process of the sulfuryl fluoride production device of this embodiment, the unreacted gaseous sulfuryl chloride oxide flows out along the exhaust flow channel of the first reaction device under the drive of the negative pressure driving device 20 of the first reaction device. Among them, when the liquid sulfuryl chloride oxide is introduced into the feed channel of the first reaction device, the liquid sulfuryl chloride oxide will also be heated and evaporated into a gas in a high-temperature environment.

[0073] It can be understood that in Figure 1In the related art shown, the gaseous sulfur chlorine oxide that does not participate in the reaction is discharged from the top port of the vertical furnace body 10, that is, the outflow path of the gaseous sulfur chlorine oxide that does not participate in the reaction partially overlaps with the discharge path of the gaseous sulfuryl fluoride, and the gaseous sulfuryl fluoride merges with the gaseous sulfur chlorine oxide that does not participate in the reaction, affecting the concentration of sulfuryl fluoride. In the present application, the two reactions for obtaining sulfuryl fluoride are respectively carried out in two reaction devices 100, and the gaseous sulfur chlorine oxide that does not participate in the reaction and the gaseous sulfuryl fluoride flow out along the exhaust flow channel of the first reaction device and the exhaust flow channel of the second reaction device respectively. Since the exhaust flow channels of the two reaction devices 100 are separated from each other, the gaseous sulfur chlorine oxide and the gaseous sulfuryl fluoride can be prevented from merging to a great extent, which can further improve the purity of sulfuryl fluoride.

[0074] As a further optional embodiment, each reaction device 100 may further include a collecting device, and the negative pressure driving device 20 is connected to the collecting device. In this way, the negative pressure driving device 20 of the first reaction device can drive the gaseous sulfur oxychloride that does not participate in the reaction to flow to the corresponding collecting device. As a result, the gaseous sulfur oxychloride that does not participate in the reaction can be recovered, thereby improving the utilization rate of the material.

[0075] In some embodiments of the present application, each reaction device 100 may further include a driving device 20, which is in driving connection with the corresponding furnace body 10, and is used to drive the corresponding furnace body 10 to rotate around its own central axis. In other words, the furnace body 10 can rotate.

[0076] Please continue to read Figure 2 Taking the case where the central axis of the furnace body 10 extends in the horizontal direction as an example, that is, the furnace body 10 is horizontal, the driving device 20 may specifically include a driving motor 21, an active roller 22 and a passive roller 23. The driving motor 21 is transmission-connected with the active roller 22 to drive the active roller 22 to rotate. The active roller 22 and the passive roller 23 jointly support the furnace body 10 to drive the furnace body 10 to rotate around its own central axis.

[0077] In this embodiment, the reaction device 100 includes a driving device 20. Compared with the related art, the furnace bodies 10 of the two reaction devices 100 can rotate, which is beneficial to evenly shake the materials in the furnace bodies 10 of the two reaction devices 100, so that the materials in the furnace bodies 10 of the two reaction devices 100 can be evenly heated, which is beneficial to improve the reaction efficiency.

[0078] In some embodiments of this application, please refer to Figures 2 to 4 Each reaction device 100 may further include a crusher 30 , which is accommodated in the corresponding furnace body 10 to crush the agglomerated materials in the corresponding furnace body 10 .

[0079] By designing the reaction device 100 to further include a crusher 30, the crusher 30 can crush the agglomerated materials, enabling the materials to react fully, improving the reaction effect, which is conducive to enhancing the production efficiency and quality of sulfuryl fluoride. Specifically, in the first reaction device, when liquid sulfur oxychloride is introduced into the feeding channel, it is easy to form agglomerated materials when the liquid sulfur oxychloride is mixed with powdery or powdered metal fluoride. After being crushed by the crusher 30, the sulfur oxychloride and the metal fluoride can react fully, so that more reaction products can be obtained, and then more sulfuryl fluoride can be produced.

[0080] In some embodiments of the present application, the crusher 30 may specifically include a rotating shaft and at least one set of blades. The extending direction of the rotating shaft is parallel to the axial direction of the furnace body 10. Both ends of the rotating shaft are rotatably connected to the furnace body 10 through bearings, and the rotating shaft is also in transmission connection with a driving source. The set of blades includes a plurality of blades evenly and spacedly distributed around the central axis of the rotating shaft, and one end of the blade is connected to the rotating shaft. During the process, the driving source drives the rotating shaft to rotate, and the set of blades rotates accordingly to break up the agglomerated materials. When there are multiple sets of blades, the multiple sets of blades are arranged at intervals along the axial direction of the rotating shaft.

[0081] In some embodiments of the present application, the crusher 30 can be arranged in the corresponding furnace body 10 in a free-body manner.

[0082] During the working process of the reaction device 100 in this embodiment, when the furnace body 10 rotates, the crusher 30 can move relative to the furnace body 10 as the furnace body 10 rotates, and then the agglomerated materials are crushed.

[0083] By designing the crusher 30 to be accommodated in the furnace body 10 in a free-body manner, there is no need to additionally set a driving source to drive the crusher 30 to move, which is beneficial to simplifying the structure of the reaction device 100.

[0084] In the actual process, when the humidity of the materials is relatively high, it is easy to adhere to the inner wall of the furnace body 10 to form scale. In this embodiment, the crusher 30 freely arranged in the furnace body 10 rotates as the furnace body 10 rotates. Coupled with the gravitational force of the crusher 30, the crusher 30 will collide with the inner wall of the furnace body 10, and it can also break the scale on the inner wall of the furnace body 10, reducing the adverse impact of the scale on the heat transfer efficiency of the furnace body 10, improving the reaction effect, and thus contributing to enhancing the production efficiency and product quality.

[0085] It should be noted that in some related technologies, the scale on the inner wall of the furnace body 10 is often cleaned by stopping the machine regularly to maintain good heat transfer efficiency of the furnace body 10. In this embodiment, the crusher 30 can automatically crush the scale, so there is no need to stop the machine for cleaning. The sulfuryl fluoride production equipment of the present application can operate continuously, with high production efficiency and increased production capacity.

[0086] In some embodiments of the present application, as Figures 2 to 4 shown, the crusher 30 may specifically include a first annular plate 31, a second annular plate 32, a connecting rod 34, and a spiral portion 33. The first annular plate 31 and the second annular plate 32 are coaxially and oppositely arranged. The center line of the first annular plate 31 is parallel to the central axis of the furnace body 10. The first annular plate 31 is connected to the second annular plate 32 through the connecting rod 34. The spiral portion 33 is wound around the connecting rod 34, and the center line of the spiral portion 33 is collinear with the center line of the first annular plate 31.

[0087] Among them, the helix direction of the spiral portion 33 can be right-handed or left-handed. There can be multiple connecting rods 34, such as 2 or 3. The multiple connecting rods 34 are evenly and spaced around the center line of the first annular plate 31, which is beneficial to improving the structural reliability of the crusher 30. During the working process of the reaction device 100 in this embodiment, when the material moves along the axial direction of the furnace body 10, the agglomerated material collides with the spiral portion 33 and is crushed.

[0088] With this design, the middle part of the crusher 30 has a hollow channel, and the material can be conveyed from the furnace head to the furnace tail along the hollow channel, which can reduce the resistance suffered by the material.

[0089] In some embodiments of the present application, please continue to refer to Figure 2 , the furnace body 10 of each reaction device 100 may specifically include a first reaction chamber 11 and a second reaction chamber 12. The first reaction chamber 11 and the second reaction chamber 12 are arranged in sequence along the axial direction of the furnace body 10 and are interconnected. The first reaction chamber 11 is close to the furnace head of the furnace body 10, and the second reaction chamber 12 is close to the furnace tail of the furnace body 10. The crusher 30 is housed in the first reaction chamber 11.

[0090] Among them, the material guided to the furnace body 10 along the feed channel is conveyed from the furnace head to the furnace tail. For the first reaction device, the material refers to metal fluoride and sulfur oxychloride; for the second reaction device, the material refers to the reaction product.

[0091] By arranging the crusher 30 in the first reaction chamber 11 and the crusher 30 being close to the furnace head, the agglomerated material can be crushed early so that the crushed material can participate in the reaction as soon as possible, promoting the full reaction of the material and being beneficial to improving the production efficiency.

[0092] In some embodiments of the present application, please refer to Figure 2 and Figure 5 , each reaction device 100 may further include a wall scraper 40, and the wall scraper 40 is housed in the corresponding furnace body 10. The wall scraper 40 can move relative to the furnace body 10 as the furnace body 10 rotates to scrape the inner wall of the corresponding furnace body 10.

[0093] That is to say, the scraping device 40 is arranged in the corresponding furnace body 10 in a free body manner. Specifically, taking the central axis of the furnace body 10 extending in the horizontal direction as an example, that is, the furnace body 10 is horizontal. During the process, when the furnace body 10 rotates around its own axis, it drives the scraping device 40 to swing in the lower space of the furnace body 10.

[0094] In this embodiment, the scraping device 40 freely arranged in the furnace body 10 moves as the furnace body 10 rotates. Coupled with the gravity of the scraping device 40, the scraping device 40 will collide with the inner wall of the furnace body 10, enabling the scale adhered to the inner wall of the furnace body 10 to be scraped off. This can reduce the adverse effect of the scale on the heat transfer efficiency of the furnace body 10, improve the reaction effect, and thus contribute to improving production efficiency and product quality. In addition, the scraping device 40 can automatically crush the scale, so there is no need to stop the machine for cleaning. The sulfuryl fluoride production equipment of the present application can operate continuously, with high production efficiency and increased production capacity.

[0095] In some embodiments of the present application, such as Figure 5 shown, the scraping device 40 can be implemented to include a shaft rod 41 and a spiral blade 42 wound around the shaft rod 41. And the scraping device 40 further includes two end plates arranged oppositely, and the two end plates are respectively connected to both ends of the shaft rod 41.

[0096] In some embodiments of the present application, please continue to refer to Figure 2 , the scraping device 40 is housed in the second reaction chamber 12. A partition can be provided between the first reaction chamber 11 and the second reaction chamber 12, and the partition can prevent the crusher 30 from entering the second reaction chamber 12 and prevent the scraping device 40 from entering the first reaction chamber 11.

[0097] For example, the furnace body 10 can be a cylinder with equal diameter, that is, from the furnace head to the furnace tail, the inner diameter of the furnace body 10 is equal everywhere, and a ring-shaped partition is convexly arranged on the inner wall of the furnace body 10. The partition divides the internal space of the furnace body 10 into a first reaction chamber 11 and a second reaction chamber 12.

[0098] For another example, as Figure 2 shown, the furnace body 10 can also include a first cylinder section 13 and a second cylinder section 14 that are coaxially and sequentially connected. Both the first cylinder section 13 and the second cylinder section 14 are cylinders with equal diameter, and the inner diameter of the first cylinder section 13 is smaller than that of the second cylinder section 14. A ring-shaped partition is provided between the first cylinder section 13 and the second cylinder section 14, and the first cylinder section 13 and the second cylinder section 14 are connected by the partition. The inner diameter of the ring-shaped partition is smaller than the inner diameter of the first cylinder section 13. In this example, the space enclosed by the first cylinder section 13 is the first reaction chamber 11, and the space enclosed by the second cylinder section 14 is the second reaction chamber 12.

[0099] A partition is provided between the first reaction chamber 11 and the second reaction chamber 12. When the crusher 30 is also accommodated in the first reaction chamber 11 in a free body manner, the partition can prevent the freely arranged crusher 30 and the wall scraper 40 from colliding and being damaged.

[0100] In some embodiments of the present application, please refer to Figure 6 and Figure 7 , a rib plate group may be convexly provided on the inner wall of the furnace body 10, and the rib plate group includes at least one rib plate 17.

[0101] When the furnace body 10 includes a first reaction chamber 11 and a second reaction chamber 12, a rib plate group may be convexly provided on the inner wall of the first reaction chamber 11 and the inner wall of the second reaction chamber 12, or a rib plate group may be convexly provided only on the inner wall of the second reaction chamber 12.

[0102] With this design, during the rotation of the furnace body 10, the rib plate 17 protruding from the inner wall of the furnace body 10 can lift the materials in contact with it inside the furnace body 10 to a certain height, that is, it can make the materials in contact with it rise, thereby playing a role in making the metal fluoride in the furnace body 10 of the first reaction device rise and come into full contact with the sulfur oxychloride to improve the reaction effect, and can also play a role in making the solid reaction products (i.e., metal fluorosulfonate) in the furnace body 10 of the second reaction device rise and be heated evenly to improve the reaction effect.

[0103] In some embodiments of the present application, the rib plate group may include a plurality of rib plates 17 spaced apart along the axial direction of the furnace body 10; and / or, the rib plate group may include a plurality of rib plates 17 spaced apart along the circumferential direction of the furnace body 10.

[0104] Among them, when the rib plate group includes a plurality of rib plates 17 spaced apart along the axial direction of the furnace body 10, as Figure 6 (A) and Figure 6 (B) show, the distance between two adjacent rib plates 17 along the axial direction of the furnace body 10 is the first distance D1, and D1 satisfies: 5 cm ≤ D1 ≤ 20 cm. Exemplarily, D1 can be selected as 5 cm, 10 cm, 15 cm, 20 cm or 25 cm.

[0105] Among them, when the rib plate group includes a plurality of rib plates 17 spaced apart along the circumferential direction of the furnace body 10, as Figure 7 (A) and Figure 7 (B) show, the distance between two adjacent rib plates 17 along the circumferential direction of the furnace body 10 is the second distance D2, and D2 satisfies: 5 cm ≤ D2 ≤ 30 cm. Exemplarily, D1 can be selected as 5 cm, 10 cm, 15 cm, 20 cm, 25 cm or 30 cm.

[0106] By setting it in this way, the rib plate group has multiple rib plates 17, increasing the number of rib plates 17, so that as much material as possible can be lifted, further improving the reaction effect, and thus improving the production efficiency and product quality.

[0107] In some embodiments of the present application, the rib plate 17 has a length direction I. As Figure 6 (A) shows, the length direction I can be parallel to the axial direction of the furnace body 10. Or, as Figure 6 (B) shows, the length direction I can also be inclined to the axial direction of the furnace body 10. The dimension of the rib plate 17 along the length direction I is L, and L can satisfy: 15 cm ≤ L ≤ 25 cm. Exemplarily, L can be selected as 15 cm, 16 cm, 17 cm, 18 cm, 19 cm, 20 cm, 21 cm, 22 cm, 23 cm, 24 cm or 25 cm.

[0108] In some embodiments of the present application, the rib plate 17 has a width direction. As Figure 7 (A) shows, the width direction can be parallel to the radial direction of the furnace body 10. Or, as Figure 7 (B) shows, the width direction can also be inclined to the radial direction of the furnace body 10. The dimension of the rib plate 17 along the width direction is W, and W can satisfy: 8 cm ≤ W ≤ 12 cm. Exemplarily, W can be selected as 8 cm, 9 cm, 10 cm, 11 cm or 12 cm.

[0109] In some embodiments of the present application, the rib plate 17 can also be in other shapes such as triangular.

[0110] In some embodiments of the present application, continue to refer to Figure 2 , each reaction device 100 can also include a feed cylinder 50 and a feed conveying mechanism 60. One end of the feed cylinder 50 is connected to the furnace head of the furnace body 10, and the furnace body 10 can rotate around its own central axis relative to the feed cylinder 50. The feed cylinder 50 is provided with a feed port 51, and the feed port 51 communicates with the furnace body 10 to form a feed channel. The feed conveying mechanism 60 is used to drive the material in the feed channel to be conveyed to the furnace body 10.

[0111] Among them, the feed conveying mechanism 60 can specifically be a screw feeder. For the first reaction device, the feed cylinder 50 can be provided with two feed ports 51. One feed port 51 is used for the entry of metal fluoride, and the other feed port 51 is used for the entry of sulfur oxychloride. One end of the feed cylinder 50 is closely attached to the furnace head of the furnace body 10.

[0112] With this design, the feed channel is far from the discharge channel and the exhaust flow channel at the rear end of the furnace tail, so that the sulfuryl fluoride flowing out along the exhaust flow channel will not be mixed with the material in the feed channel, reducing the probability of sulfuryl fluoride carrying the material in the feed channel out, and helping to increase the concentration of sulfuryl fluoride.

[0113] In some embodiments of the present application, one end of the feed cylinder 50 can be hermetically connected to the burner head of the furnace body 10.

[0114] As Figure 2 shown, one end of the feed cylinder 50 is connected to the static seal ring, and the burner head of the furnace body 10 is connected to the dynamic seal ring. Each reaction device 100 may further include a cylinder 80. Under the push of the cylinder 80, the static seal ring can always be closely attached to the dynamic seal ring.

[0115] Designing one end of the feed cylinder 50 to be hermetically connected to the burner head of the furnace body 10 can improve the sealing performance of the internal space of the furnace body 10. Since the reaction effect is closely related to the sealing performance of the reaction environment, this is beneficial to improving the reaction effect and can prevent the gas in the external environment from entering the furnace body 10 and affecting the concentration of sulfuryl fluoride.

[0116] In some embodiments of the present application, as Figure 2 shown, each reaction device 100 may further include a blanking pipe 70. The blanking pipe 70 is connected to the furnace tail of the furnace body 10, and the furnace body 10 can rotate around its own central axis relative to the blanking pipe 70. The blanking pipe 70 is provided with an air outlet 72 and a discharge port 71. The air outlet 72 is communicated with the furnace body 10 to form an exhaust flow channel. The discharge port 71 is communicated with the furnace body 10 to form a discharge channel.

[0117] Among them, the blanking pipe 70 can be in the Figure 2 vertical form shown, or it can also be in a horizontal form.

[0118] The air outlet 72 can be located above the discharge port 71. Specifically, the air outlet 72 can be arranged at the top end of the blanking pipe 70, and the discharge port 71 can be arranged at the bottom end of the blanking pipe 70. The density of gaseous sulfur oxychloride is less than that of the solid reaction product, and the density of gaseous sulfuryl fluoride is less than that of the solid reaction by-product. This makes it not easy for gaseous sulfur oxychloride and gaseous sulfuryl fluoride to converge with the downward flowing dust when flowing upward to the exhaust flow channel.

[0119] By designing that the reaction device 100 further includes a blanking pipe 70, while not affecting the rotation of the furnace body 10 of the first reaction device, the reaction product can be smoothly exported to the feed channel of the second reaction device through the blanking pipe 70. Similarly, while not affecting the rotation of the furnace body 10 of the second reaction device, sulfuryl fluoride and the reaction by-product can be smoothly exported through the blanking pipe 70.

[0120] In some embodiments of the present application, each reaction device 100 may further include a discharge conveying mechanism disposed at the discharge port 71 to drive the solid materials in the discharge pipe 70 to be discharged from the discharge port 71. Among them, the discharge conveying mechanism may be a screw discharger. During the process, the motor frequency of the screw discharger can be reasonably controlled to control the discharge speed so that the height of the materials in the discharge pipe 70 remains above 5 cm. These materials can play a role in isolating the discharge pipe 70 from the external environment, preventing the inside of the furnace body 10 from communicating with the external environment through the discharge port 71 and leaking gas, so that the reaction environment inside the furnace body 10 has good sealing performance.

[0121] In some embodiments of the present application, the central axis of the furnace body 10 may extend in the horizontal direction, and both axial ends of the furnace body 10 are open. That is to say, the furnace body 10 is horizontal.

[0122] Compared with the vertical furnace body 10, the center of gravity of the horizontal furnace body 10 can be lower, and the stability of the horizontal furnace body 10 is higher, so that it can rotate stably.

[0123] In some embodiments of the present application, as Figure 2 shown, each reaction device 100 may further include a first positioning wheel 15 and a second positioning wheel 16. The first positioning wheel 15 abuts against the furnace head of the furnace body 10, and the second positioning wheel 16 abuts against the furnace tail of the furnace body 10. The first positioning wheel 15 and the second positioning wheel 16 can rotate around a rotation axis extending in the horizontal direction, and the rotation axis is perpendicular to the central axis of the furnace body 10.

[0124] With this design, first, the first positioning wheel 15 and the second positioning wheel 16 respectively play a role in positioning the furnace head and the furnace tail. Second, the two reaction conditions for preparing sulfuryl fluoride both require high temperature, and the furnace body 10 is prone to expansion due to high temperature. By using the abutting relationship between the first positioning wheel 15 and the second positioning wheel 16 and the furnace body 10, the expansion of the furnace body 10 can be restricted to reduce excessive deformation of the furnace body 10.

[0125] A second aspect of the present application proposes a battery production line, which includes the sulfuryl fluoride production device as described above.

[0126] This battery production line has the sulfuryl fluoride production device of the first aspect as described above, and the beneficial effects of this battery production line are the same as those of the sulfuryl fluoride production device of the first aspect as described above. In particular, the purity of the sulfuryl fluoride prepared by using the sulfuryl fluoride production device of the present application is relatively high. Therefore, the battery prepared by using the sulfuryl fluoride produced by this sulfuryl fluoride production device has good performance.

[0127] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below.

[0128] In an embodiment of the present application, as Figure 2 shown, the present application provides a sulfuryl fluoride production device. The sulfuryl fluoride production device includes two reaction devices 100. The structures of the two reaction devices 100 are basically the same. One of the two reaction devices 100 is a first reaction device and the other is a second reaction device.

[0129] Each reaction device 100 includes a feeding cylinder 50, a horizontal furnace body 10 and a discharging pipe 70 connected in sequence. Among them, the feeding cylinder 50 is provided with a feeding port 51. One end of the feeding cylinder 50 is attached to the furnace head of the furnace body 10, and the feeding port 51 is communicated with the furnace head of the furnace body 10 to form a feeding channel. The two ends of the horizontal furnace body 10 are open. The horizontal furnace body 10 is a rotary furnace. The horizontal furnace body 10 can rotate around its own central axis relative to the feeding cylinder 50 and the discharging pipe 70. A heater is wound around the outer periphery of the horizontal furnace body 10. The discharging pipe 70 is vertical. The top end of the discharging pipe 70 is provided with an air outlet 72, and the bottom end is provided with a discharge port 71. The air outlet 72 is communicated with the furnace tail of the furnace head to form an exhaust flow channel, and the discharge port 71 is communicated with the furnace tail of the furnace head to form a discharge channel.

[0130] Each reaction device 100 further includes a screw feeder, a driving device 20 and a screw discharger. The screw feeder is used to convey the materials in the feeding channel into the furnace body 10. The driving device 20 is used to drive the furnace body 10 to rotate. The screw discharger is used to discharge the solid materials in the discharging pipe 70.

[0131] The feeding port 51 of the first reaction device is provided with two. One of the feeding ports 51 is for the metal fluoride to enter, and the other feeding port 51 is for the liquid sulfur oxychloride to enter. The discharge port 71 of the first reaction device is communicated with the feeding port 51 of the second reaction device.

[0132] The working principle of this sulfuryl fluoride production device is as follows: Metal fluoride and liquid sulfur oxychloride enter the feed cylinder 50 of the first reaction device through the feed port 51 of the first reaction device, and enter the furnace body 10 of the first reaction device under the transportation of the screw feeder of the first reaction device. The heater of the first reaction device is controlled to heat up to a temperature of 40°C to 180°C. The liquid sulfur oxychloride is heated and evaporated to be converted into gas, and then reacts according to the above formula (1) to obtain metal fluorosulfonate. The unreacted gaseous sulfur oxychloride is discharged from the gas outlet 72 of the first reaction device and recycled. The metal fluorosulfonate is led out from the discharge port 71 of the first reaction device and then led to the feed port 51 of the second reaction device. The metal fluorosulfonate enters the furnace body 10 of the second reaction device. The heater of the second reaction device is controlled to heat up to a temperature of 200°C to 700°C, and then reacts according to the above formula (2) to obtain sulfuryl fluoride, metal sulfate and metal chloride. The sulfuryl fluoride is discharged from the gas outlet 72 of the second reaction device, and the metal sulfate and metal chloride are discharged from the discharge port 71 of the second reaction device.

[0133] Further, the furnace body 10 of each reaction device 100 includes a first reaction chamber 11 and a second reaction chamber 12. The first reaction chamber 11 and the second reaction chamber 12 are arranged in sequence along the axis of the furnace body 10 and communicate with each other. The first reaction chamber 11 is close to the furnace head of the furnace body 10, and the second reaction chamber 12 is close to the furnace tail of the furnace body 10. A partition is provided between the first reaction chamber 11 and the second reaction chamber 12. Each reaction device 100 further includes a crusher 30 and a scraping device 40. The crusher 30 is accommodated in the first reaction chamber 11 in a free body manner, and the scraping device 40 is accommodated in the second reaction chamber 12 in a free body manner. The crusher 30 and the scraping device 40 move as the furnace body 10 rotates. The partition can prevent the crusher 30 from entering the second reaction chamber 12 and can prevent the scraping device 40 from entering the first reaction chamber 11.

[0134] Further, the crusher 30 includes a first annular plate 31, a second annular plate 32, a connecting rod 34 and a spiral part 33. The first annular plate 31 and the second annular plate 32 are coaxially and oppositely arranged. The center line of the first annular plate 31 is parallel to the central axis of the furnace body 10. The first annular plate 31 is connected to the second annular plate 32 through the connecting rod 34. The spiral part 33 is wound around the connecting rod 34, and the center line of the spiral part 33 is collinear with the center line of the first annular plate 31.

[0135] Further, a rib group is protrudingly provided on the inner wall of the furnace body 10. The rib group includes a plurality of ribs 17 spaced along the axial direction of the furnace body 10 and a plurality of ribs 17 spaced along the circumferential direction of the furnace body 10. The distance between two adjacent ribs 17 arranged along the axial direction of the furnace body 10 is greater than or equal to 5 cm and less than or equal to 20 cm, and the distance between two adjacent ribs 17 arranged along the circumferential direction of the furnace body 10 is greater than or equal to 5 cm and less than or equal to 30 cm. The length direction of the rib 17 is parallel to the axial direction of the furnace body 10, and the length of the rib 17 is 20 cm. The width direction of the rib 17 is parallel to the radial direction of the furnace body 10, and the width of the rib 17 is 10 cm.

[0136] Further, each reaction device 100 further includes a first positioning wheel 15 and a second positioning wheel 16. The first positioning wheel 15 abuts against the furnace head of the furnace body 10, and the second positioning wheel 16 abuts against the furnace tail of the furnace body 10. The first positioning wheel 15 and the second positioning wheel 16 can rotate around a rotation axis extending in the horizontal direction, and the rotation axis is perpendicular to the central axis of the furnace body 10.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sulfuryl fluoride production device, characterized in that: include: Two reaction units; Each of the reaction devices comprises a furnace body, and each of the reaction devices also has a mutually independent feed channel, a discharge channel and an exhaust channel, wherein the exhaust channel extends from the air inlet end to the air outlet end from bottom to top; One of the two reaction devices is a first reaction device, and the other is a second reaction device; The feed channel of the first reaction device is used to introduce metal fluoride and sulfur oxychloride into the furnace body of the first reaction device, so that the metal fluoride and the sulfur oxychloride react in the furnace body of the first reaction device to obtain a reaction product, and the discharge channel of the first reaction device is used to discharge the reaction product; The feed channel of the second reaction device is connected to the discharge channel of the first reaction device and is used to introduce the reaction product into the furnace body of the second reaction device. The furnace body of the second reaction device is used to calcine the reaction product to obtain sulfuryl fluoride. The exhaust channel of the second reaction device is used to discharge the sulfuryl fluoride.

2. The sulfuryl fluoride production device according to claim 1, characterized in that: Each of the reaction devices further comprises a driving device, which is drivingly connected to the corresponding furnace body, and is used for driving the corresponding furnace body to rotate around its own central axis.

3. The sulfuryl fluoride production device according to claim 2, characterized in that: Each of the reaction devices further comprises a crusher, which is accommodated in the corresponding furnace body and is used to crush the agglomerated materials in the corresponding furnace body.

4. The sulfuryl fluoride production device according to claim 3, characterized in that: The crusher is arranged in the corresponding furnace body in a free body manner.

5. The sulfuryl fluoride production device according to claim 4, characterized in that: The crusher includes a first annular plate, a second annular plate, a connecting rod and a spiral portion. The first annular plate and the second annular plate are coaxial and oppositely arranged. The center line of the first annular plate is parallel to the central axis of the furnace body. The first annular plate is connected to the second annular plate through the connecting rod. The spiral portion is wound around the connecting rod, and the center line of the spiral portion is colinear with the center line of the first annular plate.

6. The sulfuryl fluoride production device according to claim 3, characterized in that: The furnace body of each reaction device includes a first reaction chamber and a second reaction chamber, which are arranged in sequence along the axial direction of the furnace body and are connected to each other. The first reaction chamber is close to the furnace head of the furnace body, and the second reaction chamber is close to the furnace tail of the furnace body. The crusher is accommodated in the first reaction chamber.

7. The sulfuryl fluoride production device according to claim 6, characterized in that: Each of the reaction devices further comprises a wall scraper, which is accommodated in the corresponding furnace body; the wall scraper can move relative to the furnace body as the furnace body rotates, so as to scrape the inner wall of the corresponding furnace body.

8. The sulfuryl fluoride production device according to claim 7, characterized in that: The wall scraper is accommodated in the second reaction chamber; A partition is provided between the first reaction chamber and the second reaction chamber, and the partition can prevent the crusher from entering the second reaction chamber and can prevent the wall scraper from entering the first reaction chamber.

9. The sulfuryl fluoride production device according to claim 2, characterized in that: A rib plate group is protrudingly provided on the inner wall of the furnace body, and the rib plate group includes at least one rib plate.

10. The sulfuryl fluoride production device according to claim 9, characterized in that: The rib plate group includes a plurality of rib plates spaced apart along the axial direction of the furnace body and / or a plurality of rib plates spaced apart along the circumferential direction of the furnace body.

11. The sulfuryl fluoride production device according to claim 9, characterized in that: The rib plate has a length direction, the length direction is parallel to or inclined to the axial direction of the furnace body, and the dimension of the rib plate along the length direction is greater than or equal to 15 cm and less than or equal to 25 cm; and / or, The rib plate has a width direction, the width direction is parallel to or inclined to the radial direction of the furnace body, and the dimension of the rib plate along the width direction is greater than or equal to 8 cm and less than or equal to 12 cm.

12. The sulfuryl fluoride production device according to claim 2, characterized in that: Each of the reaction devices also includes a feed barrel and a feed conveying mechanism, one end of the feed barrel is connected to the furnace head of the furnace body, and the furnace body can rotate around its own central axis relative to the feed barrel; the feed barrel is provided with a feed port, and the feed port is connected to the furnace body to form the feed channel.

13. The sulfuryl fluoride production device according to claim 12, characterized in that: One end of the feed cylinder is sealed and connected to the furnace head of the furnace body.

14. The sulfuryl fluoride production device according to claim 2, characterized in that: Each of the reaction devices further comprises a feed pipe, the feed pipe is connected to the furnace tail of the furnace body, and the furnace body can rotate around its own central axis relative to the feed pipe; The feed pipe is provided with an air outlet and a material discharge port. The air outlet is connected with the furnace body to form the exhaust flow channel; the material discharge port is connected with the furnace body to form the material discharge channel.

15. The sulfuryl fluoride production device according to claim 2, characterized in that: The central axis of the furnace body extends in a horizontal direction, and both axial ends of the furnace body are open.

16. The sulfuryl fluoride production device according to claim 15, characterized in that: Each of the reaction devices also includes a first positioning wheel and a second positioning wheel, the first positioning wheel abuts against the furnace head of the furnace body, and the second positioning wheel abuts against the furnace tail of the furnace body, the first positioning wheel and the second positioning wheel can rotate around a rotation axis extending in a horizontal direction, and the rotation axis is perpendicular to the central axis of the furnace body.

17. A battery production line, characterized in that: include: The sulfuryl fluoride production device according to any one of claims 1 to 16.

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