Liquid feeding structure of the mixer reactor

Abstract

The present invention belongs to the technical field of chemical equipment, and particularly relates to a liquid feeding structure of a mixer reactor. Aiming at the problems in the prior art that the reaction process is not easy to control and the reaction degree is relatively intense, the present invention provides a liquid feeding structure of a mixer reactor, which includes a reaction cylinder body. A storage space for containing solid-phase materials is provided inside the reaction cylinder body. A main shaft is rotatably connected inside the reaction cylinder body, and the outer surface of the main shaft is in contact with the storage space. A solid-liquid mixing area for carrying out reactions is provided above the storage space. A liquid-phase pipeline is connected to the reaction cylinder body and communicates with the solid-liquid mixing area. The mixer reactor provided by the present invention gradually adds a liquid-phase reactant, namely a sulfuric acid solution, to the solid-liquid mixing area through the liquid-phase pipeline, thereby controlling the actual reaction area within the solid-liquid mixing area, controlling the reaction process, and effectively controlling the intensity of the reaction.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical equipment, and particularly relates to a liquid feeding structure of a mixer reactor. Background Art

[0002] AHF is a chemical raw material, with the Chinese name of anhydrous hydrofluoric acid, which is prepared by reacting fluorite with sulfuric acid. However, in the prior art, most of this process is carried out in a traditional mechanically stirred enamel reactor. In this way, the reaction process is not easy to control, the reaction degree is relatively intense, and even the leakage of reaction gas and the appearance of smoking phenomenon may occur, seriously affecting the development of the process, the progress of the process flow, as well as the realization of safe production and clean production.

[0003] For example, a Chinese invention patent discloses a reaction kettle [Application No.: 202010477807.X], which includes a kettle body, a stirring mechanism, a filtering mechanism and a spraying mechanism; a reaction chamber for the materials to react is arranged inside the kettle body, a feeding port communicated with the reaction chamber is arranged at the top of the kettle body, and a solid material outlet and a liquid material outlet communicated with the reaction chamber are arranged at the bottom of the kettle body; the filtering mechanism includes a filter plate horizontally arranged in the reaction chamber, and the filter plate is configured to filter and separate the solid materials and liquid materials formed after the reaction of the materials; the stirring mechanism is configured to stir the materials and push the solid materials to the solid material outlet; the spraying mechanism is configured to spray and wash the solid materials; wherein, the stirring mechanism includes a stirring shaft and a plurality of scrapers arranged on the stirring shaft, the stirring shaft is arranged in the reaction chamber and can rotate around an axis perpendicular to the horizontal plane, and the plurality of scrapers are distributed on the stirring shaft on both sides of the axis in a complementary manner; the movement trajectories of the plurality of scrapers on both sides of the axis of the stirring shaft do not coincide, and the movement trajectories of two adjacent scrapers are mutually attached.

[0004] This invention patent has the advantages of simple operation and high production efficiency, but it still does not solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a liquid feeding structure of a mixer reactor that can effectively control the intensity of the reaction for the above problems.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A liquid feeding structure of a mixer reactor, comprising a reaction cylinder body, wherein a storage space for containing solid-phase materials is provided inside the reaction cylinder body, a main shaft is rotatably connected inside the reaction cylinder body, the outer surface of the main shaft fits with the storage space, a solid-liquid mixing area for reaction is provided above the storage space, and a liquid-phase pipeline is connected to the reaction cylinder body and communicates with the solid-liquid mixing area.

[0008] In the liquid feeding structure of the above-mentioned mixer reactor, a spray head is provided at one end of the liquid-phase pipeline close to the reaction cylinder body, and the liquid-phase pipeline communicates with the solid-liquid mixing area through the spray head.

[0009] In the liquid feeding structure of the above-mentioned mixer reactor, several spray heads are provided, and the inclination angles of each spray head are different.

[0010] In the liquid feeding structure of the above-mentioned mixer reactor, a negative pressure pipeline is further connected to the reaction cylinder body, and the negative pressure pipeline communicates with the solid-liquid mixing area.

[0011] In the liquid feeding structure of the above-mentioned mixer reactor, the main shaft includes a material conveying shaft, one end of the material conveying shaft is fixedly connected with a connecting shaft, the cross-sectional area of the material conveying shaft is more than 4 times that of the connecting shaft, and a feeding mechanism for conveying the solid-phase materials in the storage space to the solid-liquid mixing area is further provided on the material conveying shaft.

[0012] In the liquid feeding structure of the above-mentioned mixer reactor, the feeding mechanism includes at least one feeding component rotatably connected to the surface of the material conveying shaft and at least one temporary storage cavity located inside the material conveying shaft. Rotating the feeding component can make the temporary storage cavity communicate with or isolate from the outside.

[0013] In the liquid feeding structure of the above-mentioned mixer reactor, three feeding components are provided and are evenly distributed circumferentially along the surface of the material conveying shaft, and three temporary storage cavities are provided and correspond to the feeding components one by one.

[0014] In the liquid feeding structure of the above-mentioned mixer reactor, the feeding component includes a first fin and a second fin. The first fin is rotatably connected to the material conveying shaft through a first rotating shaft, the first rotating shaft is located at one end of the first fin away from the second fin, the second fin is rotatably connected to the material conveying shaft through a second rotating shaft, the second rotating shaft is located at one end of the second fin away from the first fin, first openings and second openings opposite to the first fin and the second fin respectively are provided on the surface of the material conveying shaft, both the first opening and the second opening communicate with the temporary storage cavity, rotating the first fin can open or close the first opening, and rotating the second fin can open or close the second opening.

[0015] In the liquid-phase feeding structure of the mixer reactor described above, inclined surfaces are provided on both the side of the first fin away from the first rotating shaft and the side of the second fin away from the second rotating shaft. Rotating the first fin or the second fin can make the inclined surface fit on the feeding shaft.

[0016] In the liquid-phase feeding structure of the mixer reactor described above, a material guiding protrusion is further provided in the temporary material storage cavity. The upper surface of the material guiding protrusion is a material guiding arc surface. The inner surfaces of the first fin and the second fin are arc surfaces, and rotating the first fin or the second fin can make the material guiding arc surface coincide with the arc center of the inner surface of the first fin or the second fin.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] 1. The mixer reactor provided by the present invention gradually adds the liquid-phase reactant, i.e., sulfuric acid solution, to the solid-liquid mixing area through the liquid-phase pipeline, thereby controlling the actual reaction area within the solid-liquid mixing area, controlling the reaction process, and effectively controlling the intensity of the reaction.

[0019] 2. Since a paste-like by-product calcium sulfate is generated after the reaction, in the prior art, a mechanical stirring type enamel reactor requires a large amount of electric energy to drive the reactants to react and stir during the reaction process. The present invention uses the rotation process of the main shaft to gradually sprinkle the solid materials at the bottom into the solid-liquid mixing area, greatly saving energy compared with the mixing methods in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention in another direction;

[0022] Figure 3 is a schematic structural diagram of the main shaft in Embodiment 2;

[0023] Figure 4 is a partial cross-sectional view of the main shaft in Embodiment 2;

[0024] In the figure: reaction cylinder body 1, material storage space 2, main shaft 3, solid-liquid mixing area 4, liquid-phase pipeline 5, spray head 6, negative pressure pipeline 7, feeding shaft 31, connecting shaft 32, feeding mechanism 33, feeding component 34, temporary material storage cavity 35, solid-phase material 100, first fin 341, second fin 342, first rotating shaft 343, second rotating shaft 344, first opening 345, second opening 346, inclined surface 347, material guiding protrusion 351, material guiding arc surface 352. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] This embodiment provides a liquid feeding structure for a mixer reactor, which combines Figure 1 and Figure 2 As shown, it includes a reaction cylinder body 1. There is a storage space 2 for containing solid-phase materials 100 inside the reaction cylinder body 1. A main shaft 3 is rotatably connected inside the reaction cylinder body 1. The outer surface of the main shaft 3 is in contact with the storage space 2. Above the storage space 2, there is a solid-liquid mixing area 4 for the reaction to occur. A liquid-phase pipeline 5 is connected to the reaction cylinder body 1 and is in communication with the solid-liquid mixing area 4.

[0028] In the present invention, during use, the solid-phase material 100, i.e., fluorite powder, is placed in the storage space 2. The liquid-phase material, i.e., sulfuric acid solution, is continuously and evenly transported into the solid-liquid mixing area 4 through the liquid-phase pipeline 5 and contacts the fluorite powder on the surface layer to react. Therefore, the mixer reactor provided by the present invention gradually adds the liquid-phase reactant, i.e., sulfuric acid solution, to the solid-liquid mixing area 4 through the liquid-phase pipeline 5, thereby controlling the actual reaction area within the solid-liquid mixing area 4, controlling the reaction process, and effectively controlling the intensity of the reaction.

[0029] As Figure 1 shown, at one end of the liquid-phase pipeline 5 close to the reaction cylinder body 1, there is a spray head 6. The liquid-phase pipeline 5 is in communication with the solid-liquid mixing area 4 through the spray head 6. Preferably, several spray heads 6 are provided, and the inclination angles of each spray head 6 are different. This can ensure the uniformity of the spraying of the sulfuric acid solution, thereby ensuring that the reaction occurs evenly within the solid-liquid mixing area 4.

[0030] As Figure 1 shown, a negative pressure pipeline 7 is also connected to the reaction cylinder body 1. The negative pressure pipeline 7 is in communication with the solid-liquid mixing area 4. The negative pressure pipeline 7 can timely extract the hydrogen fluoride gas generated by the reaction from the reaction system, breaking the entire reaction balance, causing the reaction to shift to the right, and improving the conversion rate of the hydrogen fluoride product.

[0031] Example 2

[0032] This embodiment provides a liquid feeding structure for a mixer reactor. Its specific structure is generally the same as that in Example 1, except for the specific structure of the main shaft 3. Combining Figure 3 and Figure 4 shown, the main shaft 3 includes a feeding shaft 31. One end of the feeding shaft 31 is fixedly connected to a connecting shaft 32. The cross-sectional area of the feeding shaft 31 is more than 4 times that of the connecting shaft 32. A feeding mechanism 33 for transporting the solid-phase material 100 in the storage space 2 to the solid-liquid mixing area 4 is also provided on the feeding shaft 31.

[0033] Since the reaction of fluorite with sulfuric acid to produce hydrogen fluoride generates a paste-like by-product of calcium sulfate, in the prior art, a mechanically stirred enamel reactor requires a great deal of electrical energy to drive the reactants to react and stir during the reaction. During the rotation of the main shaft 3 in the present invention, the feeding mechanism 33 on the feeding shaft 31 gradually throws the solid-phase material 100 at the bottom into the solid-liquid mixing area 4, saving a great deal of energy compared with the mixing method in the prior art.

[0034] Combined with Figure 3 and Figure 4 As shown, the feeding mechanism 33 includes at least one feeding component 34 rotatably connected to the surface of the feeding shaft 31 and at least one temporary storage cavity 35 located inside the feeding shaft 31. Rotating the feeding component 34 can make the temporary storage cavity 35 communicate with or be isolated from the outside.

[0035] Specifically, the feeding component 34 includes a first fin 341 and a second fin 342. The first fin 341 is rotatably connected to the feeding shaft 31 through a first rotating shaft 343. The first rotating shaft 343 is located at one end of the first fin 341 away from the second fin 342. The second fin 342 is rotatably connected to the feeding shaft 31 through a second rotating shaft 344. The second rotating shaft 344 is located at one end of the second fin 342 away from the first fin 341. First openings 345 and second openings 346 opposite to the first fin 341 and the second fin 342 are provided on the surface of the feeding shaft 31. Both the first opening 345 and the second opening 346 are communicated with the temporary storage cavity 35. Rotating the first fin 341 can open or close the first opening 345, and rotating the second fin 342 can open or close the second opening 346. The opening and closing of the first fin 341 and the second fin 342 can be controlled by using a commonly used telescopic rod structure or other structures in the prior art.

[0036] Preferably, three feeding components 34 are provided and are evenly distributed circumferentially on the surface of the feeding shaft 31, and three temporary storage cavities 35 are provided and correspond to the feeding components 34 one by one. This can effectively improve production efficiency.

[0037] During use, the feeding shaft 31 rotates to drive the whole feeding component 34 to rotate around the axis line of the feeding shaft 31. Combined with Figure 2 As shown, when the feeding component 34 rotates to the left side of the main shaft 3 shown in Figure 2 the first fin 341 is buried in the solid-phase material 100. At this time, rotate the first fin 341 to open the temporary storage cavity 35, and part of the solid-phase material 100 enters the temporary storage cavity 35. Then rotate the first fin 341 to close the temporary storage cavity 35, and at the same time, the rotation resistance of the feeding shaft 31 can also be reduced. When the feeding component 34 rotates to Figure 2On the right side of the main shaft 3 shown, the second fin 342 is located above the solid-liquid mixing area 4. At this time, the solid material 100 in the temporary storage cavity 35 is transferred to one end close to the second fin 342 under the action of gravity. Rotate the second fin 342 so that the solid material 100 is discharged along the second fin 342 into the solid-liquid mixing area 4. Repeat this process to achieve continuous reaction.

[0038] As Figure 4 shown, inclined surfaces 347 are provided on both the side of the first fin 341 away from the first rotating shaft 343 and the side of the second fin 342 away from the second rotating shaft 344. Rotating the first fin 341 or the second fin 342 can make the inclined surface 347 fit on the material conveying shaft 31. In this way, after transporting the solid-phase material 100, there will be no solid-phase material 100 remaining on the inclined surface 347, avoiding the problem that the first fin 341 and the second fin 342 cannot completely enclose the temporary storage cavity 35.

[0039] As Figure 4 shown, a material guiding protrusion 351 is further provided in the temporary storage cavity 35. The upper surface of the material guiding protrusion 351 is a material guiding arc surface 352. The inner surfaces of the first fin 341 and the second fin 342 are arc surfaces, and rotating the first fin 341 or the second fin 342 can make the material guiding arc surface 352 coincide with the center of the arc of the inner surface of the rotating first fin 341 or the second fin 342. In this way, the process of the solid-phase material 100 entering and discharging from the temporary storage cavity 35 can be more smooth, improving production efficiency.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although terms such as reaction cylinder body 1, storage space 2, main shaft 3, solid-liquid mixing area 4, liquid-phase pipeline 5, spray head 6, negative pressure pipeline 7, material conveying shaft 31, connecting shaft 32, feeding mechanism 33, feeding assembly 34, temporary storage cavity 35, solid-phase material 100, first fin 341, second fin 342, first rotating shaft 343, second rotating shaft 344, first opening 345, second opening 346, inclined surface 347, material guiding protrusion 351, material guiding arc surface 352, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A liquid feeding structure of a mixer reactor, comprising a reaction cylinder body (1), wherein a storage space (2) for containing solid-phase materials (100) is provided inside the reaction cylinder body (1), and it is characterized in that: A main shaft (3) is rotatably connected inside the reaction cylinder body (1). The outer surface of the main shaft (3) is in contact with the material storage space (2). Above the material storage space (2), there is a solid-liquid mixing area (4) for the reaction to occur. A liquid phase pipeline (5) is connected to the reaction cylinder body (1) and communicates with the solid-liquid mixing area (4). One end of the liquid phase pipeline (5) close to the reaction cylinder body (1) is provided with a spray head (6). The liquid phase pipeline (5) communicates with the solid-liquid mixing area (4) through the spray head (6). The main shaft (3) includes a material conveying shaft (31). One end of the material conveying shaft (31) is fixedly connected with a connecting shaft (32). The cross-sectional area of the material conveying shaft (31) is more than 4 times that of the connecting shaft (32). A feeding mechanism (33) for conveying the solid-phase material (100) in the material storage space (2) to the solid-liquid mixing area (4) is also provided on the material conveying shaft (31). The feeding mechanism (33) includes at least one feeding component (34) rotatably connected to the surface of the material conveying shaft (31) and at least one temporary material storage cavity (35) located inside the material conveying shaft (31). Rotating the feeding component (34) can make the temporary material storage cavity (35) communicate with or be isolated from the outside. There are three feeding components (34) which are evenly distributed circumferentially along the surface of the material conveying shaft (31). There are three temporary material storage cavities (35) which correspond to the feeding components (34) one by one. The feeding component (34) includes a first fin (341) and a second fin (342). The first fin (341) is rotatably connected to the material conveying shaft (31) through a first rotating shaft (343). The first rotating shaft (343) is located at one end of the first fin (341) far from the second fin (342). The second fin (342) is rotatably connected to the material conveying shaft (31) through a second rotating shaft (344). The second rotating shaft (344) is located at one end of the second fin (342) far from the first fin (341). First openings (345) and second openings (346) opposite to the first fin (341) and the second fin (342) respectively are provided on the surface of the material conveying shaft (31). The first openings (345) and the second openings (346) are both communicated with the temporary material storage cavity (35). Rotating the first fin (341) can open or close the first opening (345). Rotating the second fin (342) can open or close the second opening (346).

2. The liquid feeding structure of the mixer reactor according to claim 1, wherein: There are several spray heads (6), and the inclination angle of each spray head (6) is different.

3. The liquid feeding structure of the mixer reactor according to claim 1, characterized in that: A negative pressure pipeline (7) is also connected to the reaction cylinder body (1). The negative pressure pipeline (7) communicates with the solid-liquid mixing area (4).

4. The liquid feeding structure of the mixer reactor according to claim 1, characterized in that: Inclined surfaces (347) are provided on one side of the first fin (341) far from the first rotating shaft (343) and on one side of the second fin (342) far from the second rotating shaft (344). Rotating the first fin (341) or the second fin (342) can make the inclined surface (347) fit on the material conveying shaft (31).

5. The liquid feeding structure of the mixer reactor according to claim 1, characterized in that: A material guiding protrusion (351) is further provided in the temporary material storage cavity (35). The upper surface of the material guiding protrusion (351) is a material guiding arc surface (352). The inner surfaces of the first fin (341) and the second fin (342) are arc surfaces, and rotating the first fin (341) or the second fin (342) can make the material guiding arc surface (352) coincide with the center of the arc of the inner surface of the rotated first fin (341) or second fin (342).

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