A reactor for producing hydrogen fluoride

Abstract

This utility model discloses a reactor for preparing hydrogen fluoride, relating to the field of reactor technology. The reactor includes a rotary furnace body, helical blades, and at least one cutter assembly. The rotary furnace body has a rotating chamber for holding materials. The helical blades are located within the rotating chamber and roll in contact with the bottom of the rotary furnace body. The cutter assembly is mounted on the helical blades and has blades facing and close to the outer edge of the helical blades. The reactor for preparing hydrogen fluoride provided by this utility model utilizes the weight of the helical blades to crush the fluorite in the lower part of the rotary furnace body, and the blades on the cutter assembly to cut the fluorite in the lower part of the rotary furnace body, increasing the reaction surface area of ​​the fluorite particles, allowing for more complete contact and reaction with sulfuric acid, improving the conversion efficiency of hydrogen fluoride, thereby saving production costs and enhancing the market competitiveness of the product.

Description

Technical Field

[0001] This invention belongs to the field of reaction furnace technology, specifically a reaction furnace for preparing hydrogen fluoride. Background Technology

[0002] Hydrogen fluoride is a basic raw material in the fluorine chemical industry and is widely used in various fluorine-containing products.

[0003] Currently, commonly used reactors react fluorite and sulfuric acid to produce hydrogen fluoride and fluorogypsum. The fluorogypsum is conveyed to the gypsum tank by a screw conveyor, while the hydrogen fluoride gas escapes from the transfer furnace head and enters the next step of washing, purification, condensation, and distillation to obtain anhydrous hydrogen fluoride product.

[0004] However, existing reactors cannot fully react the materials, resulting in low gas production efficiency. In particular, the low grade of low-grade associated fluorite is low and the impurity content is high. Insufficient material reaction further restricts the improvement of its added value. Utility Model Content

[0005] The purpose of this invention is to provide a reactor for preparing hydrogen fluoride, thereby addressing at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A reactor for preparing hydrogen fluoride, comprising: The rotary kiln body has a rotating chamber inside, which is used to hold materials; The spiral blades are located inside the rotating cavity and make rolling contact with the bottom of the rotary furnace body. At least one cutting assembly is disposed on a helical blade and has a cutting edge facing and close to the outer edge of the helical blade.

[0007] As a further improvement of this utility model, the extension direction of the blade is consistent with the spiral direction of the spiral blade.

[0008] As a further improvement of this utility model, a preset gap is left between the blade and the outer edge of the spiral blade.

[0009] As a further improvement of this utility model, the preset gap is 1~30cm.

[0010] As a further embodiment of this utility model: the cutter assembly includes a mounting base and a cutter body, with the mounting base disposed on the spiral blade; The blade is mounted on the mounting base, and the cutting edge is located on the blade.

[0011] As a further embodiment of this utility model: the mounting base has a mounting groove facing the outer edge of the spiral blade, and part of the blade body is inserted into the mounting groove.

[0012] As a further embodiment of this utility model: the cutter assembly also includes at least one fastener, and the mounting base has at least one first mounting hole, which communicates with the mounting groove; The blade body has at least one second mounting hole, and fasteners pass through the second mounting hole and part of the first mounting hole to connect the blade body.

[0013] As a further embodiment of this utility model: a notch is provided on the outer edge of the spiral blade, and the mounting base is located inside the notch.

[0014] As a further embodiment of this invention: there are several cutter assemblies, which are distributed at intervals along the outer edge of the spiral blade.

[0015] As a further embodiment of this utility model: the two ends of the rotary furnace body are respectively provided with a feed port and a discharge port, the feed port is connected to one end of the rotary cavity and the other end of the rotary cavity; The rotating cavity is also equipped with a limiting component, which is located between the spiral blade and the discharge port to limit the axial displacement of the spiral blade.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the reactor for preparing hydrogen fluoride includes a rotary furnace body, helical blades, and at least one cutter assembly. By setting a rotating cavity in the rotary furnace body to hold materials and facilitate reaction, and by placing the helical blades in the rotating cavity and making rolling contact with the bottom of the rotary furnace body so that they can roll together with the rotary furnace body, and by setting the cutter assembly on the helical blades, the cutter assembly is provided with blades facing and close to the outer edge of the helical blades. On the one hand, the weight of the helical blades crushes the fluorite in the lower part of the rotary furnace body, and on the other hand, the blades on the cutter assembly cut the fluorite in the lower part of the rotary furnace body, increasing the reaction surface area of ​​the fluorite particles, allowing for more complete contact and reaction with sulfuric acid, improving the conversion efficiency of hydrogen fluoride, thereby saving production costs and enhancing the market competitiveness of the product. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This utility model provides a schematic diagram of a reaction furnace structure for preparing hydrogen fluoride; Figure 2 for Figure 1 Side view of the installation relationship between the helical blades and the cutter assembly; Figure 3 for Figure 2 Partial sectional view along section AA in the middle; Figure 4 for Figure 3 A partial schematic diagram along direction B.

[0019] Figure label: 100. Rotary furnace body; 101. Rotary chamber; 102. Feed inlet; 103. Discharge outlet; 104. Limiting component; 200. Spiral blade; 201. Notch; 300: Cutting blade assembly; 301: Blade; 310: Mounting base; 311: Mounting slot; 312: First mounting hole; 320: Blade body; 321: Second mounting hole; 330: Fastener; 400. Drive motor; 500. Heating cylinder. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-4 As shown in the figure, a reaction furnace for preparing hydrogen fluoride in an embodiment of the present invention includes a rotary furnace body 100, a spiral blade 200 and at least one cutter assembly 300. The rotary furnace body 100 has a rotary cavity 101 for holding materials.

[0027] The spiral blade 200 is located inside the rotary chamber 101 and makes rolling contact with the inner bottom of the rotary furnace body 100.

[0028] The cutter assembly 300 is disposed on the spiral blade 200, and the cutter assembly 300 is provided with a blade 301, which faces and is close to the outer edge of the spiral blade 200.

[0029] In this embodiment, the rotary kiln body 100 is generally cylindrical, with its axis arranged horizontally. Both ends of the rotary kiln body 100 can be mounted on a frame using rollers, bearings, or other components, so that it can rotate around its own axis. For example, a drive motor 400 can be used to drive the rotary kiln body 100 to rotate via a gear assembly.

[0030] In addition, inlets and outlets can be respectively opened at both ends of the rotary kiln body 100. The inlet is mainly used for materials such as fluorite and sulfuric acid, while the outlet is mainly used for discharging materials such as fluorogypsum and hydrogen fluoride. It should be noted that the feeding device at the inlet and the unloading device at the outlet can be fixedly installed on the frame, and the feeding device and the unloading device are rotatably connected to the rotary kiln body 100 and sealed.

[0031] The rotary kiln body 100 has a rotary chamber 101, which is used to hold materials such as sulfuric acid and fluorite. Of course, in order to heat the materials in the rotary kiln body 101, a heating cylinder 500 can be installed outside the rotary kiln body 100. The heating cylinder 500 is fixedly installed on the frame. The inner wall of the heating cylinder 500 is rotatably connected and sealed with the outer wall of the rotary kiln body 100 to form a heating chamber. High-temperature flue gas is injected into the heating chamber from above, exchanges heat with the rotary kiln body 100, and is discharged from below.

[0032] In this embodiment, the spiral blade 200, also known as an auger, is mainly used to push the material inside the rotary kiln body 100 from the feeding side to the discharging side. Its outer diameter is smaller than the inner diameter of the rotary cavity 101. The spiral blade 200 is placed in the rotary cavity 101 inside the rotary kiln body 100, and the axis of the spiral blade 200 is approximately parallel to the axis of the rotary cavity 101. Under its own weight, the spiral blade 200 rolls in contact with the inner bottom of the rotary kiln body 100. The specific diameter, pitch, and other parameters of the spiral blade 200 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0033] In this embodiment, the cutter assembly 300 is used to cut the fluorite located in the lower part of the rotary cavity 101. It can be mounted on the spiral blade 200, and the cutting edge 301 on the cutter assembly 300 faces and is close to the outer edge of the spiral blade 200.

[0034] Specifically, after fluorite and sulfuric acid are transported into the rotary chamber 101 of the rotary furnace body 100, as the rotary furnace body 100 rotates around its own axis, the spiral blades 200 can also roll within the rotary chamber 101. In this way, on the one hand, the weight of the spiral blades 200 crushes the fluorite in the lower part of the rotary furnace body 200, and on the other hand, the blades 301 on the cutter assembly 300 cut the fluorite in the lower part of the rotary furnace body 200, increasing the reaction surface area of ​​the fluorite particles, allowing for more complete contact and reaction with sulfuric acid, improving the conversion efficiency of hydrogen fluoride, thereby saving production costs and enhancing the market competitiveness of the product.

[0035] In some embodiments, the extending direction of the blade 301 is consistent with the helical direction of the helical blade 200. For example... Figure 1 , 2 As shown in Figure 4, the blade 301 can be elongated, and the length extension direction of the blade 301 is roughly consistent with the spiral direction of the spiral blade 200.

[0036] In this way, when the spiral blades 200 push the material in the rotary kiln body 100 from the feeding side to the discharging side, the obstruction effect of the blades 301 on the material is avoided, making feeding easier.

[0037] In some embodiments, a preset gap is provided between the blade 301 and the outer edge of the spiral blade 200. Further, the preset gap is 1~30cm.

[0038] like Figure 2 As shown, the blade 301 does not protrude beyond the outer edge of the spiral blade 200, thus preventing the blade 301 from damaging the inner wall of the rotary kiln body 100 and extending the service life of the equipment.

[0039] In some embodiments, the cutter assembly 300 includes a mounting base 310 and a blade body 320, with the mounting base 310 disposed on the helical blade 200. The blade body 320 is disposed on the mounting base 310, and the cutting edge 301 is located on the blade body 320.

[0040] For example, the mounting base 310 can be installed on the spiral blade 200 by welding, screwing, or other means, and the blade body 320 can be installed on the mounting base 310 by plugging, screwing, or other means, so that it is easy to disassemble, replace, or repair the blade body 320 after it is damaged.

[0041] Furthermore, the mounting base 310 has a mounting groove 311 facing the outer edge of the spiral blade 200, and part of the blade body 320 is inserted into the mounting groove 311.

[0042] For example, such as Figure 3 As shown, the mounting groove 311 on the mounting base 310 faces the inner wall of the rotary kiln body 100, and the width of the mounting groove 311 is adapted to the width of the blade body 320. The blade body 320 can be inserted into the mounting groove 311 by means of tight fit or screw connection, thereby ensuring the stability of the blade body 320 and facilitating installation and replacement.

[0043] Furthermore, the cutter assembly 300 also includes at least one fastener 330, and the mounting base 310 has at least one first mounting hole 312, which communicates with the mounting groove 311.

[0044] The blade body 320 has at least one second mounting hole 321, and the fastener 330 passes through the second mounting hole 321 and part of the first mounting hole 312 to connect the blade body 320.

[0045] For example, such as Figure 2 , Figure 3 As shown, the fastener 330 can be a bolt, and one or more first mounting holes 312 are formed on the mounting base 310, extending in a direction parallel to the axis of the helical blade 200. Correspondingly, one or more second mounting holes 321 are formed on the blade body 320, extending in a direction also parallel to the axis of the helical blade 200.

[0046] In this way, after the blade body 320 is inserted into the mounting slot 311, the bolts can pass through a portion of the first mounting hole 312, the second mounting hole 321, and another portion of the first mounting hole 312 in sequence to lock it in place, thereby fixing the blade body 320 and facilitating disassembly and replacement. The specific number and position of the fasteners 330, the first mounting hole 312, and the second mounting hole 321 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0047] Furthermore, the outer edge of the spiral blade 200 is provided with a notch 201, and the mounting base 310 is located within the notch 201.

[0048] For example, such as Figure 2 , Figure 4 As shown, the mounting base 310 can be fixedly installed in the notch 201 by welding, snap-fitting or other methods, which can further reduce the resistance of the spiral blade 200 in feeding.

[0049] In some embodiments, there are a plurality of cutter assemblies 300, which are distributed at intervals along the outer edge of the helical blade 200.

[0050] In this way, the material at the bottom of the rotary kiln body 100 can be shredded evenly and multiple times, thereby ensuring the shredding effect. The specific number and position of the cutting blade assembly 300 can be determined according to actual needs, and no specific limitation is made in this embodiment.

[0051] In some embodiments, the rotary kiln body 100 is provided with a feed inlet 102 and a discharge outlet 103 at both ends, respectively. The feed inlet 102 is connected to one end of the rotary cavity 101 and the other end of the rotary cavity 101.

[0052] The rotary cavity 101 is also provided with a limiting member 104, which is located between the spiral blade 200 and the discharge port 103 to limit the axial displacement of the spiral blade 200.

[0053] Specifically, such as Figure 1 As shown, a feed inlet 102 is opened on the left side of the rotary furnace body 100, and a discharge outlet 103 is opened on the right side of the rotary furnace body 100. The spiral blade 200 is placed near the feed inlet 102. In order to prevent the spiral blade 200 from moving freely along the axial direction, for example, several limiting plates are welded to the inner wall of the rotary furnace body 100 at intervals around the axis of the rotary furnace body 100. A material passage is left between two adjacent limiting plates. Each limiting plate is located between the spiral blade 200 and the discharge outlet 103. Under the action of the limiting plates, the spiral blade 200 can be effectively prevented from moving too freely (randomly) along the axial direction.

[0054] It should be noted that the limiting plate should not have too much impact on the feeding of the spiral blade 200. Of course, other types of limiting mechanisms or limiting components can also be set on the rotary kiln body 100. Any limiting mechanism or limiting component that can axially limit the spiral blade 200 and does not have too much impact on the feeding of the spiral blade 200 is acceptable. This embodiment does not impose too many restrictions.

[0055] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A reaction furnace for producing hydrogen fluoride, characterized by comprising: include: A rotary kiln body (100) has a rotary cavity (101) inside, which is used to hold materials; Spiral blades (200) are located in the rotary cavity (101) and roll in contact with the inner bottom of the rotary furnace body (100); At least one cutting assembly (300) is disposed on the spiral blade (200) and has a cutting edge (301) facing and close to the outer edge of the spiral blade (200).

2. The reactor for producing hydrogen fluoride according to claim 1, characterized by, The extension direction of the blade (301) is consistent with the helical direction of the helical blade (200).

3. The reactor for producing hydrogen fluoride according to claim 1, characterized by, A preset gap is left between the blade (301) and the outer edge of the spiral blade (200).

4. The reactor for producing hydrogen fluoride according to claim 3, characterized by The preset gap is 1~30cm.

5. The reactor for preparing hydrogen fluoride according to claim 1, characterized in that, The cutting assembly (300) includes a mounting base (310) and a blade body (320), the mounting base (310) being disposed on the helical blade (200); The blade body (320) is disposed on the mounting base (310), and the cutting edge (301) is located on the blade body (320).

6. The reactor for producing hydrogen fluoride according to claim 5, characterized by The mounting base (310) has a mounting groove (311) facing the outer edge of the spiral blade (200), and part of the blade body (320) is inserted into the mounting groove (311).

7. The reactor for producing hydrogen fluoride according to claim 6, characterized by The cutter assembly (300) further includes at least one fastener (330), and the mounting base (310) has at least one first mounting hole (312) communicating with the mounting groove (311); The blade body (320) has at least one second mounting hole (321), and the fastener (330) passes through the second mounting hole (321) and part of the first mounting hole (312) to connect the blade body (320).

8. The reactor for producing hydrogen fluoride according to claim 5, wherein The outer edge of the spiral blade (200) has a notch (201), and the mounting base (310) is located in the notch (201).

9. The reactor for producing hydrogen fluoride according to claim 1, wherein There are several cutter assemblies (300), and the several cutter assemblies (300) are distributed at intervals along the outer edge of the spiral blade (200).

10. The reactor for producing hydrogen fluoride according to any one of claims 1 to 9, characterized in that, The rotary furnace body (100) is provided with a feed inlet (102) and a discharge outlet (103) at both ends respectively. The feed inlet (102) is connected to one end of the rotary cavity (101) and the other end of the rotary cavity (101). The rotary cavity (101) is also provided with a limiting member (104), which is located between the spiral blade (200) and the discharge port (103) to limit the axial displacement of the spiral blade (200).

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