Intensive fluorination reactor

Abstract

The invention discloses an intensive fluorination reactor, and relates to the technical field of fluorination reaction. The intensive fluorination reactor comprises: a reaction tank body; the central gas injection pipe is coaxially arranged in the reaction tank body and is used for introducing hydrogen fluoride gas; the grid assembly is arranged on the central gas injection pipe and communicated with the central gas injection pipe, and the central gas injection pipe can drive the grid assembly to reciprocate in the vertical direction and is used for adjusting a gas distribution area and preventing particles from hardening or blocking. By arranging the central gas injection pipe capable of slowly moving up and down and the grid assembly, on the basis of ensuring uniform distribution of gas, a gas injection area is periodically adjusted in the vertical direction, the gas distribution range is effectively expanded, an initial bubble generation area of a bed layer is disturbed, combination of large bubbles is inhibited, and uniform formation of small bubbles is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluorination reaction, in particular to an intensive fluorination reactor. BACKGROUND

[0002] The intensive fluorination reactor is a high-efficiency reaction equipment specially developed for dry-process aluminum fluoride production. The core process adopts dry-process technology, uses gaseous hydrogen fluoride (HF) and solid aluminum hydroxide as raw materials, and carries out gas-solid phase reaction under high temperature conditions. The process has the advantages of short process, low energy consumption, high product purity, etc. In the process, the fluidized bed reactor is not only the key core equipment, but also realizes efficient mixing and mass transfer between reactants, and guarantees the uniformity and continuity of the reaction through good thermal stability.

[0003] However, the following problems still exist in the process of gas-solid reaction of hydrogen fluoride gas and aluminum hydroxide powder in the fluidized bed reactor at present: 1. In the existing fluidized bed reactor, the gas floats up in the form of large bubbles, the inside of the bubble basically does not contain solid particles, only local contact occurs between the bubble interface and the surrounding aluminum hydroxide particles, the effective mass transfer area is limited, the reaction intensity is low, the utilization rate of hydrogen fluoride gas is reduced, at the same time, the bubble distribution is uneven, the size difference is significant, which easily causes local airflow concentration, forms a channel or short circuit channel, causes the gas velocity to be too high in some areas and stagnant flow in other areas, seriously affects the fullness of gas-solid two-phase contact and the uniformity of the reaction process, and restricts the improvement of the overall reaction efficiency.

[0004] 2. Some of the existing technologies use spiral continuous stirring structure to improve the mixing effect, but the introduction of mechanical stirring parts increases the gas flow resistance in the bed, disturbs the main flow field distribution, especially when hydrogen fluoride gas is introduced, the stirring action easily induces spiral motion of the airflow, deviates from the vertical upward flow direction, causes the contact path of the gas and the solid particles to be disorderly, and the reaction area to be offset or uneven. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides an intensive fluorination reactor, which solves the problems raised in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intensive fluorination reactor, comprising: a reaction vessel; a central gas injection pipe coaxially disposed within the reaction vessel for introducing hydrogen fluoride gas; and a grid assembly disposed on and connected to the central gas injection pipe, wherein the central gas injection pipe can drive the grid assembly to reciprocate vertically, thereby adjusting the gas distribution area and preventing particle caking or blockage; the grid assembly includes multiple intersecting and internally interconnected branch pipes, each branch pipe having a jet nozzle located on the same horizontal plane, the branch pipes driving the jet nozzles to periodically oscillate in the horizontal plane and to reciprocate up and down along a spiral trajectory, allowing hydrogen fluoride gas to be injected into the material layer from different directions in a staggered diffusion manner, thereby achieving orderly cutting, dispersion, and three-dimensional dynamic disturbance of the initial bubbles.

[0007] Furthermore, the jet head is vertically disposed on the outer wall of the bronchus, and its air outlet axis is consistent with the radial direction of the bronchus. The jet heads on each bronchus are staggered.

[0008] Furthermore, the jet head is inclinedly disposed on the outside of the bronchus, and the jet heads on different bronchus are arranged asymmetrically, with different tilt directions and tilt angles, so as to form a multi-directional, variable-angle gas jet field.

[0009] Furthermore, a swing groove plate is provided above the bronchus, and a connecting column that slides with the swing groove plate is installed at the upper end of the bronchus. A rotating gear is provided at the upper part of the end of the swing groove plate away from the bronchus. Each rotating gear is located on the inner circumference of the same connecting ring, and the connecting ring is coaxially arranged on the inner wall of the reaction vessel.

[0010] Furthermore, the connecting ring is an internal gear ring, and each rotating gear simultaneously meshes with the inner gear ring of the internal gear ring.

[0011] Furthermore, the inner side of the connecting ring is equipped with circumferentially evenly distributed arc-shaped racks, each arc-shaped rack meshing with a rotating gear at a corresponding position, and not all rotating gears mesh with the arc-shaped racks.

[0012] Furthermore, a support rod is fixedly connected to the lower end of the intersection of adjacent bronchial tubes, a rotating ring is coaxially installed at the lower end of the connecting ring, a wave-shaped spiral guide rail is fixedly connected to the lower end of the rotating ring, the wave-shaped spiral guide rail is sleeved on the outer periphery of the central air injection tube, and a continuous undulating groove is opened at its upper end along the circumference, and the lower end of the support rod slides in cooperation with the groove.

[0013] Furthermore, side rods are evenly installed on the outer circumference of the connecting ring, and spiral grooves are provided on the inner wall of the reaction vessel at the positions corresponding to the side rods for sliding cooperation.

[0014] Furthermore, an annular cavity is coaxially sleeved around the outer periphery of the central air injection tube. One end of the bronchus is connected to the central air injection tube, and the other end extends to and is connected to the side wall of the annular cavity. The swing groove plate is rotatably installed on the upper end of the annular cavity. An arc-shaped through groove is opened on the inner side of the annular cavity corresponding to the position of each bronchus. An arc-shaped plate that slides and engages with the inner wall of the annular cavity is fixedly connected to the outer side of the end of the bronchus. The size of the arc-shaped plate is larger than the opening size of the arc-shaped through groove.

[0015] Furthermore, a pusher plate is fixedly connected to the upper end of the central gas injection pipe, and a push rod that slides vertically with the reaction tank is installed on the upper end of the pusher plate. The push rod passes through the upper end of the reaction tank and is connected to a pusher frame. The pusher frame is fixedly connected to the end of the piston rod of the drive cylinder. A cyclone separator is provided at the top of the reaction tank. The air inlet of the cyclone separator is connected to the inside of the reaction tank and is used to centrifugally separate the gas-solid mixture that escapes after the reaction. The side outlet of the cyclone separator is connected to the lower section of the central gas injection pipe through a separation pipe.

[0016] The present invention has the following beneficial effects: (1) This intensive fluorination reactor, by setting up a central gas injection pipe and grid assembly that can move slowly up and down, can make the jetting area periodically adjusted in the vertical direction while ensuring uniform gas distribution, effectively expanding the gas distribution range, disturbing the initial bubble generation zone of the bed, inhibiting the merging of large bubbles, and promoting the uniform formation of small bubbles. At the same time, the dynamic displacement can prevent particles from continuously accumulating near the nozzle, reduce the risk of caking and blockage, and improve the gas-solid contact efficiency and the stability of the reaction process.

[0017] (2) In this intensive fluorination reactor, the jet heads arranged in different branches form a spatially misaligned multi-point jet pattern, which avoids mutual interference or energy superposition between adjacent jets, reduces local airflow resistance, optimizes the initial diffusion behavior of gas entering the bed, enhances the stability of the low-speed foaming zone, reduces channeling and deflection phenomena, and improves the uniformity of gas-solid contact in the lower part of the bed.

[0018] (3) In this intensive fluorination reactor, the jet head swings periodically in the horizontal plane with the branch pipe, so that the gas release direction changes dynamically, and the newly formed bubbles are cut and dispersed in an orderly manner, breaking the repetition of the airflow path, strengthening the local turbulence intensity, improving the flow inertia problem caused by traditional fixed nozzles, and further improving the mixing efficiency and reaction uniformity in the initial stage of fluidization.

[0019] (4) This intensive fluorination reactor, by making the bronchus swing horizontally and move up and down along the spiral path, generates a slight, periodic vertical shaking in its intersection area and dynamically forms a local conical gas distribution structure, effectively disturbing the near-nozzle area of ​​the bed, suppressing particle accumulation, and promoting asymmetric, multi-directional diffusion of the airflow in three-dimensional space.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of a half-section of the reaction vessel in this invention; Figure 3 This is a partial cross-sectional view of the top of the reaction vessel in this invention; Figure 4 This is a partial cross-sectional view of the bottom of the reaction vessel in this invention; Figure 5 This is a schematic diagram of the grid component in Embodiment 1 of the present invention; Figure 6 for Figure 5 A top-view plan view; Figure 7 This is a partial cross-sectional view of the annular cavity in this invention; Figure 8 This is a schematic diagram of the structure of the bronchus and support rod in this invention; Figure 9 This is a schematic diagram of the rotating ring and the wave-shaped spiral guide rail disk in this invention; Figure 10 This is a top view of the grid assembly in Embodiment 2 of the present invention; Figure 11 This is a schematic diagram of the grid component in Embodiment 3 of the present invention.

[0022] In the diagram, 1. Reaction vessel; 2. Central gas injection pipe; 3. Grid assembly; 31. Branch pipe; 311. Annular cavity; 312. Arc plate; 313. Jet nozzle; 314. Swinging groove plate; 315. Connecting column; 316. Rotating gear; 317. Internal gear ring; 318. Side rod; 319. Spiral groove; 320. Pushing disc; 321. Push rod; 322. Pushing frame; 323. Drive cylinder; 324. Arc rack; 325. Connecting bracket; 326. Support rod; 327. Rotating ring; 328. Wave-shaped spiral guide plate; 329. Slide groove; 4. Cyclone separator; 41. Separation pipe. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0025] The following is based on Figures 1-11 This invention describes a compact fluorination reactor provided in an embodiment of the invention.

[0026] Example 1, this example refers to Figures 1-9 .

[0027] Please refer to Figure 1 and Figure 2 This invention provides an intensive fluorination reactor, including a reaction tank 1, which is a vertically arranged fluidized bed reactor filled with aluminum hydroxide powder as the reactant. During operation, gas is introduced from bottom to top, causing the bed to sequentially form an emulsion phase, a bubble phase, and a dilute phase zone: the emulsion phase is located at the bottom of the bed, with close gas-solid contact, and is the main reaction zone, ensuring efficient reaction between hydrogen fluoride and aluminum hydroxide to produce aluminum fluoride; in the bubble phase, gas passes through the material layer in the form of bubbles, causing particle agitation and enhancing mixing uniformity; the dilute phase zone is located at the top and is used for preliminary gas-solid separation, reducing fine powder entrainment.

[0028] Hydrogen fluoride is generated by the reaction of fluorite and concentrated sulfuric acid in the external reaction chamber. After the purifier removes moisture, acid mist and impurities, it is introduced into the reaction tank 1 through the bottom gas channel and uniformly enters the bottom area of ​​the fluidized bed. During the rising process, the purified hydrogen fluoride gas comes into full contact with the fluidized aluminum hydroxide powder and undergoes a fluorination reaction. The final anhydrous aluminum fluoride particles can be discharged from the discharge port set at the rear of the reaction tank 1.

[0029] To improve the uniformity of hydrogen fluoride gas distribution within the reaction vessel 1 and avoid channeling or uneven reaction caused by localized gas flow concentration, a central gas injection pipe 2 is coaxially installed within the reaction vessel 1. Its lower end is connected to the bottom gas channel from the purifier to guide the purified hydrogen fluoride gas into the reaction zone. Furthermore, a grid assembly 3 is installed on the central gas injection pipe 2, which is connected to the central gas injection pipe 2 to form a gas diversion structure.

[0030] For details, please refer to Figures 4-6The grid assembly 3 includes multiple intersecting and internally connected bronchial tubes 31. Each bronchial tube 31 is connected to the others at the joints by a retractable corrugated hose, which ensures the continuity of the gas passage and allows the bronchial tubes 31 to swing slightly and relatively independently. At the same time, the ends of the bronchial tubes 31 near the central air injection tube 2 are also connected to the central air injection tube 2 through corrugated hoses, so that the entire grid assembly 3 has a certain radial floating capability.

[0031] Additionally, please refer to Figure 7 An annular cavity 311 is coaxially sleeved around the outer periphery of the central air injection pipe 2. The annular cavity 311 is fixedly connected to the central air injection pipe 2 via a connecting bracket 325 and is used to support and guide the movement of the grid assembly 3. An arc-shaped through groove is provided on the inner side of the annular cavity 311 corresponding to the position of each bronchus 31. An arc-shaped plate 312 is connected to the outer side of the bronchus 31 away from the central air injection pipe 2 via a retractable corrugated pipe. The arc-shaped plate 312 forms a sliding seal with the inner wall of the annular cavity 311. The size of the arc-shaped plate 312 is larger than the opening size of the arc-shaped through groove to ensure that the arc-shaped plate 312 will not fall out during the reciprocating movement of the bronchus 31, while maintaining a sealed state to prevent gas leakage.

[0032] And, please refer to Figures 5-7 Each bronchus 31 is equipped with a jet nozzle 313 located on the same horizontal plane. The jet nozzle 313 is vertically arranged on the outer wall of the bronchus 31, and its outlet axis is consistent with the radial direction of the bronchus 31. The jet nozzles 313 on each bronchus 31 are staggered to avoid jet collision or superposition, forming a multi-point, staggered gas release mode. While reducing local airflow resistance, it promotes the generation of fine and uniform bubbles, effectively prevents the merging of large bubbles and channeling phenomenon, and significantly improves the uniformity and reaction stability of gas-solid contact at the bottom of the bed.

[0033] To further increase the uniformity of the bubbles and reduce gas resistance, the bronchus 31 can drive the jet head 313 to oscillate periodically in the horizontal plane, so that hydrogen fluoride gas is injected into the material layer from different directions in a staggered diffusion manner, thereby achieving orderly cutting and dispersion of the initial bubbles.

[0034] For details, please refer to Figure 5 and Figure 6A swing groove plate 314 is rotatably installed at the upper end of the annular cavity 311 corresponding to the position of the bronchus 31. A connecting column 315 that slides with the swing groove plate 314 is installed at the upper end of the bronchus 31. When the swing groove plate 314 swings around the rotation point between itself and the annular cavity 311, the bronchus 31 can be pushed to swing synchronously in the horizontal plane through the connecting column 315. A rotating gear 316 is provided on the upper part of the end of the swing groove plate 314 away from the bronchus 31. Each rotating gear 316 is located on the inner circumference of the same connecting ring. The connecting ring is sleeved on the outside of the annular cavity 311. The connecting ring is an internal toothed ring 317. Each rotating gear 316 meshes with the inner toothed ring of the internal toothed ring 317 at the same time.

[0035] During operation, the connecting ring reciprocates, and the inner toothed ring 317 drives each rotating gear 316 to reciprocate synchronously. The reciprocating rotation of the rotating gear 316 drives the corresponding swinging groove plate 314 to swing synchronously. During the swinging process, the swinging motion is transmitted to the bronchus 31 through the sliding cooperation between the groove and the connecting column 315, causing the bronchus 31 to reciprocate synchronously in the horizontal plane. As the bronchus 31 swings, the jet nozzles 313 distributed on it change the injection direction, so that the hydrogen fluoride gas is continuously injected into the material layer in the reaction tank 1 at an alternating radial angle.

[0036] Please refer to Figure 5 , Figure 8 and Figure 9 A support rod 326 is fixedly connected to the lower end of the corrugated hose at the intersection of the corresponding adjacent bronchus 31. Correspondingly, a rotating ring 327 is coaxially installed at the lower end of the connecting ring. A wave-shaped spiral guide plate 328 is fixedly connected to the lower end of the rotating ring 327. The wave-shaped spiral guide plate 328 is sleeved on the outer periphery of the central air injection tube 2. A continuous undulating groove 329 is opened at its upper end along the circumference. The height of the groove 329 changes periodically in a wave-like manner during the radial extension process. The lower end of the support rod 326 slides in conjunction with the groove 329.

[0037] During operation, the connecting ring drives the rotating ring 327 and the wave-shaped spiral guide rail disk 328 to rotate synchronously. Since the slide groove 329 has both a spiral direction and vertical undulation, the support rod 326 shifts horizontally along the spiral path during the follow-up process, and is driven to move up and down reciprocally by the height change of the slide groove 329. This composite motion is transmitted to the corrugated hose connection part through the support rod 326, so that while the adjacent bronchus 31 swings horizontally, their intersection area produces a slight, periodic vertical vibration, and dynamically forms a local conical air distribution structure, which effectively disturbs the local bed, prevents particle accumulation, and promotes the dynamic diffusion of airflow in three-dimensional space, significantly improving the bubble breaking effect and gas-solid contact uniformity.

[0038] It should be noted that the retractable bellows, while satisfying gas sealing and passage connectivity, allows the bronchus 31 to swing in the horizontal plane, move slightly in the vertical direction, and adapt to local torsional deformation. At the same time, its structural stiffness effectively constrains the degree of freedom of motion, ensuring the reliability of the dynamic connection between the bronchus 31, the annular cavity 311, and the central air injection pipe 2, while avoiding structural fatigue, sealing failure, or jet direction deviation caused by excessive deformation or violent shaking, thereby maintaining the overall stability and durability of the grid assembly 3.

[0039] Please refer to Figure 4 and Figure 5 To achieve the reciprocating rotation of the connecting ring, the connecting ring is rotatably connected to the annular cavity 311, and the two can rotate relative to each other. Side rods 318 are evenly installed on the outer circumference of the connecting ring. The inner wall of the reaction vessel 1 is provided with spiral grooves 319 that slide with the side rods 318 at the corresponding positions. The grid assembly 3 can move up and down with the central gas injection pipe 2. The annular cavity 311 moves synchronously, driving the connecting ring connected to it to move axially together. During this process, the side rods 318 on the connecting ring slide along the spiral grooves 319. Under the guidance of the spiral grooves 319, the axial movement is converted into the periodic reciprocating rotation of the connecting ring.

[0040] Please refer to Figure 2 and Figure 3 To further adjust the gas distribution area, the central gas injection pipe 2 can drive the grid assembly 3 to reciprocate in the vertical direction. A pusher plate 320 is fixedly connected to the upper end of the central gas injection pipe 2. A push rod 321 that slides vertically with the reaction tank 1 is installed on the upper end of the pusher plate 320. The push rod 321 passes through the upper end of the reaction tank 1 and is connected to a pusher frame 322. The pusher frame 322 is fixedly connected to the piston rod end of the drive cylinder 323. In order to adapt to the reciprocating movement and maintain the gas path seal, the connecting section of the central gas injection pipe 2 that passes through the bottom of the reaction tank 1 adopts a telescopic corrugated pipe structure, which ensures the continuous introduction of hydrogen fluoride gas and allows free axial movement.

[0041] During operation, the drive cylinder 323 pushes the pusher frame 322 to move up and down reciprocally via the piston rod. The pusher frame 322 drives the pusher disk 320 to move synchronously via the push rod 321, thereby driving the central gas injection pipe 2 and its connected grid assembly 3 to move slowly along the axial direction. The movement speed is controllable and the stroke is moderate, ensuring that while disturbing the bed, it avoids causing severe impact or disrupting the fluidization state of the aluminum hydroxide powder in the reaction vessel 1.

[0042] The slow movement of the grid assembly 3 causes the jetting area to change periodically in the vertical direction, expanding the gas distribution range, breaking the stability of bubble growth, and promoting the uniform generation of fine bubbles. At the same time, the dynamic movement can effectively prevent the caking and blockage caused by the long-term accumulation of particles around the nozzle, further improving the gas dispersion and gas-solid contact efficiency, and enhancing the stability and uniformity of the reaction process.

[0043] Please refer to Figure 1 , Figure 2 and Figure 5 To further improve the utilization rate of hydrogen fluoride gas, a cyclone separator 4 is installed at the top of the reaction tank 1. Its inlet is connected to the upper space of the reaction tank 1 to receive the gas-solid mixture that escapes after the reaction. After the mixture enters the cyclone separator 4, it is efficiently separated under the action of centrifugal force. The solid particles are thrown against the wall of the separator and fall down along the cone, returning to the reaction tank 1 or entering the collection system. The purified gas is discharged from the top central pipe. The side outlet of the cyclone separator 4 is connected to the lower section of the central gas injection pipe 2 through the separation pipe 41, so that the unreacted hydrogen fluoride gas is reintroduced into the grid assembly 3 for recycling. The separation pipe 41 adopts a flexible connection method, which can adapt to the position change of the central gas injection pipe 2 during the up-and-down reciprocating motion.

[0044] In actual operation (use), the purified hydrogen fluoride gas is introduced into the central injection pipe 2 from the bottom, enters the grid assembly 3 through the central injection pipe 2, and is sprayed into the reaction tank 1 through the jet nozzle 313 on the branch pipe 31. At the same time, the drive cylinder 323 drives the central injection pipe 2 and the grid assembly 3 to move up and down as a whole through the push frame 322, push rod 321 and push disk 320, realizing dynamic adjustment of the gas distribution position. During the movement, the side rod 318 on the connecting ring slides along the spiral groove 319 on the inner wall of the reaction tank 1, so that the connecting ring... The reciprocating rotation is generated, which drives the swinging slot plate 314 to swing through the meshing of the internal gear ring 317 and the rotating gear 316. In turn, the connecting column 315 drives the branch pipe 31 and the jet head 313 to swing back and forth synchronously, forming a multi-directional turbulent airflow. In addition, the cyclone separator 4 at the top of the reaction tank 1 separates the escaped gas-solid mixture. The separated gas is reintroduced into the lower section of the central gas injection pipe 2 through the separation pipe 41 to realize the recycling of unreacted gas. Finally, the anhydrous aluminum fluoride particles generated can be discharged from the outlet of the reaction tank 1.

[0045] Example 2, this example refers to Figure 10 .

[0046] The difference between this embodiment and Embodiment 1 is that the jet head 313 is inclinedly arranged on the outside of the bronchus 31, and its gas outlet direction is at a certain angle to the axis of the bronchus 31. The jet heads 313 on different bronchus 31 are arranged asymmetrically, and their tilting directions and tilting angles are different to form a multi-directional, variable-angle gas jet field, which effectively breaks the airflow symmetry and suppresses the generation and merging of large bubbles. When the bronchus 31 swings back and forth, the inclined jet head 313 can further change the jet direction and the area of ​​action during the movement, so that the gas release path is dynamically diffused, which significantly enhances the disturbance intensity and coverage of local materials.

[0047] Example 3, this example refers to Figure 11 .

[0048] The difference between this embodiment and Embodiment 1 is that the inner side of the connecting ring here is equipped with circumferentially evenly distributed arc-shaped racks 324. Each arc-shaped rack 324 meshes with a corresponding rotating gear 316. Not all rotating gears 316 mesh with the arc-shaped racks 324. When the connecting ring reciprocates, the arc-shaped racks 324 rotate synchronously with it, driving the currently meshed rotating gear 316 to rotate. The rotating gear 316 drives the corresponding bronchus 31 to reciprocate in the horizontal plane through the cooperation of the swing groove plate 314 and the connecting column 315.

[0049] As the connecting ring continues to rotate, the arc-shaped rack 324 gradually disengages from the currently meshing rotating gear 316 and engages with the next adjacent rotating gear 316, thereby driving the next branch tube 31 to swing. This intermittent meshing transmission method causes each branch tube 31 to swing sequentially, forming an asynchronous, alternating disturbance rhythm, which further expands the overall disturbance range and time coverage, enhances the dynamic disturbance capability of the flow field at the bottom of the bed, and effectively improves the bubble breaking efficiency and gas dispersion uniformity.

Claims

1. An intensified fluorination reactor, characterized in that, The utility model relates to a hydrogen fluoride production device, including: Reaction tank body (1); Center injection pipe (2) is coaxially arranged in reaction tank body (1), and is used for passing in hydrogen fluoride gas; Lattice assembly (3) is arranged on center injection pipe (2) and is communicated with, and center injection pipe (2) can drive lattice assembly (3) reciprocating motion along vertical direction; The lattice assembly (3) includes a plurality of mutually intersecting and internally through connecting branch air pipes (31), each branch air pipe (31) is provided with a jet head (313) on the same horizontal plane, and the branch air pipe (31) can drive the jet head (313) to periodically swing in the horizontal plane and can reciprocatingly fluctuate along the spiral track.

2. An intensified fluorination reactor according to claim 1, wherein, The jet head (313) is vertically arranged on the outer side wall of the branch air pipe (31), and the gas outlet axis is consistent with the radial direction of the branch air pipe (31), and the jet heads (313) on each branch air pipe (31) are staggered.

3. An intensified fluorination reactor according to claim 1, wherein, The jet head (313) is arranged on the outer side of the branch air pipe (31), and the jet heads (313) on different branch air pipes (31) are asymmetrically arranged, and the inclination direction and the inclination angle are different.

4. An intensified fluorination reactor according to claim 2, wherein, The branch air pipe (31) is provided with a swing groove plate (314) above, and the upper end of the branch air pipe (31) is provided with a connecting column (315) in sliding fit with the swing groove plate (314), and the upper end of the swing groove plate (314) away from the branch air pipe (31) is provided with a rotating gear (316), each rotating gear (316) is located on the inner circumferential side of the same connecting ring, and the connecting ring is coaxially arranged on the inner wall of the reaction tank body (1).

5. An intensified fluorination reactor according to claim 4, wherein, The connecting ring is an internal gear ring (317), and each rotating gear (316) is engaged with the inner side gear ring of the internal gear ring (317).

6. An intensified fluorination reactor according to claim 4, wherein, The connecting ring is internally provided with circumferentially uniformly distributed arc-shaped racks (324), each arc-shaped rack (324) is engaged with the corresponding position rotating gear (316), and not all rotating gears (316) are engaged with the arc-shaped rack (324).

7. An intensified fluorination reactor according to claim 5 or 6, wherein, The lower end of the intersection connection of adjacent branch air pipes (31) is fixedly connected with a support rod (326), the lower end of the connecting ring is coaxially installed with a rotating ring (327), the lower end of the rotating ring (327) is fixedly connected with a wave-shaped spiral guide rail disc (328), the wave-shaped spiral guide rail disc (328) is sleeved on the outer circumference of the center injection pipe (2), a continuous undulating sliding groove (329) is formed on the upper end in the circumferential direction, and the lower end of the support rod (326) is in sliding fit with the sliding groove (329).

8. An intensified fluorination reactor according to claim 7, wherein, The outer side of the connecting ring is circumferentially uniformly provided with a side rod (318), and the inner wall of the reaction tank body (1) is provided with a spiral groove (319) in sliding fit with the side rod (318) at the corresponding position.

9. An intensified fluorination reactor according to claim 4, wherein, The outer circumference of the center injection pipe (2) is coaxially sleeved with an annular cavity (311), one end of the branch air pipe (31) is communicated with the center injection pipe (2), the other end extends to the side wall of the annular cavity (311) and is communicated therewith, and the swing groove plate (314) is rotatably installed on the upper end of the annular cavity (311). The annular cavity (311) is provided with an arc-shaped through slot corresponding to the position of each bronchus (31) on the inner side, and the end of the bronchus (31) is fixedly connected with an arc-shaped plate (312) which is in sliding fit with the inner wall of the annular cavity (311), and the size of the arc-shaped plate (312) is greater than the opening size of the arc-shaped through slot.

10. An intensified fluorination reactor according to claim 9, wherein, The upper end of the central gas injection pipe (2) is fixedly connected with a push disc (320), the upper end of the push disc (320) is installed with a push rod (321) which is in sliding fit with the reaction tank body (1) in the up-down direction, the push rod (321) is connected with a push frame (322) after penetrating through the upper end of the reaction tank body (1), and the push frame (322) is fixedly connected with the end of the piston rod of a driving cylinder (323); The top of the reaction tank body (1) is provided with a cyclone separator (4), the gas inlet of the cyclone separator (4) is communicated with the inside of the reaction tank body (1) and is used for centrifugal separation of the gas-solid mixture after reaction, and the lateral outlet of the cyclone separator (4) is communicated with the lower section of the central gas injection pipe (2) through a separation pipe (41).

Images