Feeding and gas guiding device and hydrogen fluoride production system

Abstract

The utility model relates to the technical field of hydrogen fluoride production, in particular to a feeding and gas guiding device and a hydrogen fluoride production system. The feeding and gas guiding device comprises a shell, the shell is provided with a cavity, a communicating port, a feeding port and a gas guiding port, the communicating port, the feeding port and the gas guiding port are communicated with the cavity, the communicating port is located in one side of the shell and is configured to be connected with a reaction furnace, the feeding port is configured to be used for introducing raw materials mixed by a pre-reactor or other mixers, and the gas guiding port is configured to be used for guiding the raw materials mixed by the pre-reactor or other mixers; the air guide port is located in the top of the shell. And a part of the feeding mechanism is located in the cavity, and the feeding mechanism is configured to drive the mixed raw materials to continuously pass through the cavity and enter the reaction furnace. Furnace gas generated by the reaction furnace enters the cavity of the shell through the communicating port of the shell and is discharged to the washing tower through the gas guide port of the shell. When the furnace gas flows into the cavity, dust carried in the furnace gas can be settled on the feeding mechanism. The load of a subsequent washing process is reduced, and the blockage frequency and the maintenance time of the filler of the washing tower are reduced.

Description

Technical Field

[0001] This application relates to the field of hydrogen fluoride production technology, and in particular to a feeding gas guiding device and a hydrogen fluoride production system. Background Technology

[0002] Anhydrous hydrogen fluoride (AHF) is a basic raw material for the production of fluoride salts, fluorohaloalkanes, fluorinated refrigerants, glass corrosives, wood impregnators, and electrolytic elemental fluorine. It has been widely used in the atomic energy, chemical, and petroleum industries.

[0003] Currently, the hydrogen fluoride production system includes a pre-reactor, a reactor, a feeding mechanism, and a scrubbing tower. Fluorite and mixed acid, the raw materials for hydrogen fluoride, are thoroughly mixed in the pre-reactor and then fed into the reactor via the feeding mechanism. The resulting furnace gas is discharged from the reactor and then enters the scrubbing tower for washing to obtain hydrogen fluoride.

[0004] However, the furnace gas carries a lot of dust after being discharged from the reactor, which increases the load on the scrubbing tower and requires frequent maintenance. Utility Model Content

[0005] Based on this, this application provides a feeding gas guiding device and a hydrogen fluoride production system to solve the problem in related technologies that the furnace gas carries a lot of dust after being discharged from the reactor, which increases the load on the scrubbing tower and requires frequent maintenance of the scrubbing tower.

[0006] On one hand, embodiments of this application provide a feeding and air guiding device, including:

[0007] The shell has a cavity, a connecting port, a feed port, and a gas inlet. The connecting port, feed port, and gas inlet are connected to the cavity. The connecting port is located on one side of the shell and is configured to connect to the reactor. The feed port is configured to introduce raw materials mixed in a pre-reactor or other mixer. The gas inlet is located at the top of the shell.

[0008] The feeding mechanism, partially located within the cavity, is configured to continuously drive the mixed raw materials through the cavity and into the reactor.

[0009] In one possible implementation, the discharge end of the feeding mechanism passes through the communication port.

[0010] In one possible implementation, the feeding mechanism includes a conveying rod and a drive mechanism for driving the conveying rod to rotate, with helical blades provided on the side wall of the conveying rod.

[0011] One end of the conveyor rod passes through the connecting port, and the other end of the conveyor rod extends to the side of the housing away from the connecting port.

[0012] In one possible implementation, the portion of the conveyor rod that passes through the connection port is located at the bottom of the connection port.

[0013] In a possible implementation, the side of the shell where the communication port is arranged is configured to be connected to the reaction furnace by plugging.

[0014] In a possible implementation, the shell comprises a main body part formed in a cylindrical shape, the inner diameter of the main body part is larger than the diameter of the conveying rod, the communication port is arranged at one end of the main body part, the feeding port is arranged at the other end of the main body part, the conveying rod is arranged inside the main body part, and the conveying rod is arranged at the bottom of the main body part.

[0015] In a possible implementation, the gas guide port is arranged at the top of the shell away from the side of the communication port.

[0016] In a possible implementation, the shell further comprises a protruding part arranged at the top of the main body part, and the gas guide port is arranged at the top end of the protruding part.

[0017] In a possible implementation, the bottom of the shell is provided with a plurality of support seats, and the bottom end of each support seat is provided with a castor.

[0018] In another aspect, the embodiments of the present application provide a hydrogen fluoride production system, comprising a reaction furnace and the feeding and gas guiding device described above, and the communication port of the feeding and gas guiding device is communicated with the reaction furnace.

[0019] The feeding and gas guiding device and the hydrogen fluoride production system provided by the present application comprise a shell and a feeding mechanism. The shell has a cavity, a communication port, a feeding port and a gas guide port, and the communication port can be connected to a reaction furnace. The feeding port is configured to introduce raw materials mixed in a pre-reactor or other mixers. Part of the feeding mechanism is arranged in the cavity, and the feeding mechanism can continuously drive the mixed raw materials to pass through the cavity and enter the reaction furnace. The raw materials can enter the reaction furnace through the feeding mechanism of the feeding and gas guiding device. The furnace gas generated by the reaction furnace enters the cavity of the shell through the communication port of the shell, and is discharged to a washing tower through the gas guide port of the shell. When the furnace gas flows into the cavity, the dust carried in the furnace gas will settle on the feeding mechanism, and the dust will be re-introduced into the reaction furnace by the feeding mechanism. In this way, the dust in the furnace gas is settled, which reduces the load of the subsequent washing process, reduces the plugging frequency of the packing of the washing tower and the maintenance time, and improves the economic benefit of the production of hydrogen fluoride. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1A structural schematic view of a feeding gas guiding device provided by an embodiment of the present application is shown in the figure.

[0022] Figure 2 A structural schematic view of another feeding gas guiding device provided by an embodiment of the present application is shown in the figure.

[0023] Figure 3 A sectional view of the feeding gas guiding device provided by an embodiment of the present application is shown in the figure.

[0024] Explanation of reference signs:

[0025] 100 - housing; 110 - cavity; 120 - communication port; 130 - gas guiding port; 140 - feeding port; 150 - main body part; 160 - protruding part; 170 - support seat;

[0026] 200 - feeding mechanism; 210 - conveying rod; 220 - driving mechanism; 221 - driving motor; 222 - speed reducer;

[0027] 300 - caster;

[0028] 400 - pre-reactor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference signs represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] The terms "first", "second", "third" (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a particular order or sequence.

[0033] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0034] In the prior art, the hydrogen fluoride production system includes a pre-reactor, a reaction furnace, a feeding mechanism and a washing tower. The raw materials of fluorite and mixed acid are fully mixed in the pre-reactor and then enter the reaction furnace through the feeding mechanism for reaction. The furnace gas generated by the reaction is discharged from the reaction furnace and then enters the washing tower for washing to obtain hydrogen fluoride. The furnace gas discharged from the reaction furnace carries a lot of dust, and the furnace gas directly enters the washing tower for washing after being discharged from the reaction furnace, which increases the load of the washing tower and requires frequent maintenance of the washing tower.

[0035] After repeated thinking and verification, the inventors found that if a feeding gas guiding device is added between the reaction furnace and the washing tower, the furnace gas is first introduced into the shell of the feeding gas guiding device after being discharged from the reaction furnace, and the dust carried by the furnace gas in the shell will settle on the feeding mechanism of the feeding gas guiding device to be re-introduced into the reaction furnace for reaction. The amount of dust carried by the furnace gas when entering the washing tower is reduced, the load of the washing process is reduced, and the frequency of plugging of the washing tower packing and the maintenance time are reduced.

[0036] Therefore, the inventors design a feeding gas guiding device and a hydrogen fluoride production system. The feeding gas guiding device is provided with a cavity, a communication port, a feeding port and a gas guiding port in a shell. A feeding mechanism of the feeding gas guiding device is located in the cavity. The feeding mechanism can drive the mixed raw materials after the pre-reactor to continuously pass through the cavity and enter the reaction furnace. The furnace gas discharged from the reaction furnace can enter the cavity of the shell through the communication port, and then enter the subsequent washing process through the gas guiding port of the shell. The dust carried by the furnace gas in the cavity can settle on the feeding mechanism, reducing the amount of dust carried by the furnace gas when entering the washing tower, and reducing the plugging frequency of the packing of the washing tower and the maintenance time.

[0037] The technical solutions of the feeding gas guiding device and the hydrogen fluoride production system provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] Referring to FIGS. 1 to 4, Figure 1 and Figure 2 The feeding gas guiding device provided by the embodiments of the present application includes a shell 100 and a feeding mechanism 200. The shell 100 has a cavity 110, a communication port 120, a feeding port 140 and a gas guiding port 130. The communication port 120, the feeding port 140 and the gas guiding port 130 are respectively communicated with the cavity 110. The communication port 120 is located on one side of the shell 100 and is configured to be connected with a reaction furnace. The feeding port 140 is configured to introduce the mixed raw materials from a pre-reactor 400 or other mixers. The gas guiding port 130 is located at the top of the shell 100.

[0039] For example, the communication port 120 can be connected with the exhaust port of the reaction furnace. The furnace gas discharged from the exhaust port can enter the cavity 110 of the shell 100 and then be discharged from the cavity 110 through the gas guiding port 130 at the top of the shell 100. The specific shape and size of the shell 100 can be set as required, which is not limited herein.

[0040] The feeding port 140 of the shell 100 can be connected with the discharge end of the pre-reactor 400 or other mixers. The mixed raw materials from the pre-reactor 400 or other mixers can enter the cavity 110 of the shell 100 through the feeding port 140. The mixed raw materials from the pre-reactor 400 or other mixers include fluorite and mixed acid (a mixture of 98% concentrated sulfuric acid, fuming sulfuric acid and washing acid). The fluorite can enter the pre-reactor 400 from the feeding end at the top right side of the pre-reactor 400. The mixed acid can enter the pre-reactor 400 from the feeding end at the top left side of the pre-reactor 400.

[0041] The feeding mechanism 200 is partially located in the cavity 110 and is configured to drive the mixed raw materials to continuously pass through the cavity 110 and enter the reaction furnace.

[0042] The feeding mechanism 200 is located below the feeding port 140. After the raw material mixed by the pre-reactor 400 or other mixers enters the cavity 110 from the feeding port 140, the raw material can fall on the feeding mechanism 200, and the feeding mechanism 200 can send the raw material in the cavity 110 into the reaction furnace. It is worth mentioning that the dust carried by the furnace gas is the raw material that is not fully reacted. After the dust carried by the furnace gas settles on the feeding mechanism 200 in the cavity 110, the dust can be sent into the reaction furnace again by the feeding mechanism 200. The above-mentioned arrangement realizes full utilization of the raw material, which is conducive to reducing the cost of hydrogen fluoride production.

[0043] The feeding gas guiding device provided by the embodiment includes a shell 100 and a feeding mechanism. The shell 100 has a cavity 110, a communication port 120, a feeding port 140 and a gas guiding port 130. The communication port 120 can be connected with a reaction furnace. The feeding port 140 is configured to pass the raw material mixed by the pre-reactor 400 or other mixers. Part of the feeding mechanism 200 is located in the cavity 110. The feeding mechanism 200 can drive the mixed raw material to continuously pass through the cavity 110 and enter the reaction furnace. The raw material can enter the reaction furnace through the feeding mechanism 200 of the feeding gas guiding device. The furnace gas generated by the reaction furnace enters the cavity 110 of the shell 100 through the communication port 120 of the shell 100, and is discharged to a washing tower through the gas guiding port 130 of the shell 100. When the furnace gas flows into the cavity 110, the dust carried in the furnace gas will settle on the feeding mechanism 200. The dust is brought into the reaction furnace again by the feeding mechanism 200. In this way, the dust in the furnace gas is settled, which reduces the load of the subsequent washing process, reduces the plugging frequency of the washing tower filler and the maintenance time, and improves the economic benefit of hydrogen fluoride production.

[0044] In addition, the feeding gas guiding device provided by the embodiment sets the feeding mechanism 200 between the pre-reactor 400 or other mixers and the reaction furnace, which realizes segmented feeding of the raw material, avoids the feeding assembly of the pre-reactor 400 or other mixers from being blocked due to too long feeding distance of the pre-reactor 400 or other mixers, and avoids the driving unit of the feeding assembly from being burned due to too large load of the driving unit, and avoids the feeding mechanism 200 from being too long, which causes difficulty in maintenance of the feeding gas guiding device of the hydrogen fluoride production system, and the feeding mechanism 200 needs to be disassembled during the maintenance process.

[0045] In a possible implementation manner, as Figure 1 and Figure 2As shown, the outfeed end of the feeding mechanism 200 is arranged in the communicating opening 120. It can be understood that the outfeed opening of the shell 100 is arranged in the communicating opening 120. The feeding mechanism 200 can drive the raw material to pass through the cavity 110 of the shell 100 and the communicating opening 120 in sequence and enter the reaction furnace. Correspondingly, the reaction furnace is provided with a connecting opening connected with the communicating opening 120, through which the feeding and exhaust of the reaction furnace can be realized.

[0046] The above arrangement is beneficial to simplify the structure of the reaction furnace and reduce the separate exhaust device of the end cover of the reaction furnace, which is convenient for the installation and management of the equipment.

[0047] In a specific embodiment, as shown in Figure 1 and Figure 2 , the feeding mechanism 200 comprises a conveying rod 210 and a driving mechanism 220 for driving the conveying rod 210 to rotate, and the side wall of the conveying rod 210 is provided with a spiral blade.

[0048] As can be understood by those skilled in the art, an "auger" can be used as the feeding mechanism 200. The rotation of the conveying rod 210 in the "auger" can stabilize the conveying of the raw material. In a possible implementation, as shown in Figure 1 and Figure 2 , the driving mechanism 220 can comprise a driving motor 221 and a speed reducer 222, the output shaft of the driving motor 221 is connected with the input end of the speed reducer 222, and the output end of the speed reducer 222 is connected with the corresponding conveying rod 210.

[0049] One end of the conveying rod 210 is arranged in the communicating opening 120, and the other end of the conveying rod 210 extends to the side of the shell 100 away from the communicating opening 120. Exemplarily, the end of the conveying rod 210 away from the communicating opening 120 can extend out of the cavity 110. The specific length of the conveying rod 210 extending out of the cavity 110 is not limited in this embodiment, and those skilled in the art can arrange it according to the needs.

[0050] With this structure, the rotation of the conveying rod 210 driven by the driving mechanism 220 can drive the raw material in the cavity 110 to enter the reaction furnace, and the feeding mechanism 200 can reliably receive the raw material entering the cavity 110 through the feeding opening 140.

[0051] In other embodiments, the feeding mechanism 200 can also be other conveying mechanisms such as a belt conveying mechanism.

[0052] Figures 1-3It is shown that the part of the conveying rod 210 that is arranged in the communicating opening 120 is located at the bottom of the communicating opening 120. It can be understood by those skilled in the art that the furnace gas discharged from the reaction furnace flows upward after entering the cavity 110, and the above arrangement makes the furnace gas above the feeding mechanism 200, and the dust carried by the furnace gas in the cavity 110 can be stably received by the feeding mechanism 200 after the dust settles.

[0053] As shown in Figure 1 and Figure 2 , the shell 100 is provided with a communicating opening 120, one side of which is configured to be connected with the reaction furnace. For example, the communicating opening 120 of the shell 100 can protrude from the main body of the shell 100. The shape and size of the communicating opening 120 can match the connecting port of the reaction furnace. In one possible implementation, the communicating opening 120 of the shell 100 can be inserted into the connecting port of the reaction furnace; in another possible implementation, the connecting port of the reaction furnace can be inserted into the communicating opening 120 of the shell 100. When the shell 100 is connected with the reaction furnace, a sealing structure can be arranged between the communicating opening 120 of the shell 100 and the connecting port of the reaction furnace. The above arrangement facilitates the connection between the shell 100 and the reaction furnace.

[0054] The above arrangement facilitates the connection between the feeding and guiding device and the reaction furnace by the worker.

[0055] In one possible implementation, as shown in Figure 2 , the bottom of the shell 100 is provided with a plurality of support seats 170, and the bottom end of each support seat 170 is provided with a castor 300.

[0056] It is to be understood that the number of support seats 170 can be three, four, or five, etc., which is not limited herein. For example, each support seat 170 can be a columnar structure. The support seat 170 can raise the height of the shell 100 so that the height of the communicating opening 120 corresponds to the height of the connecting port of the reaction furnace.

[0057] It can be understood that the castor 300 at the bottom end of the support seat 170 facilitates the movement of the feeding and guiding device by the worker, and facilitates the mutual connection or disassembly between the shell 100 of the feeding and guiding device and the reaction furnace.

[0058] Optionally, in order to improve the stability of the feeding mechanism 200, the bottom of the end of the feeding mechanism 200 extending out of the cavity 110 can also be provided with a support seat 170, and the bottom of the support seat 170 can also be provided with a castor 300.

[0059] As shown in Figures 1-3As shown, in one possible implementation, the shell 100 comprises a main body 150 formed in a cylindrical shape, and the inner diameter of the main body 150 is greater than the diameter of the conveying rod 210. In one possible implementation, the inner diameter of the main body 150 is greater than the sum of the diameter of the conveying rod 210 and the diameter of the feeding port 140. The embodiment is not limited to the size of the inner diameter of the main body 150 and the diameter of the conveying rod 210, and a person skilled in the art can set them according to actual needs.

[0060] The communication port 120 is located at one end of the main body 150, the feeding port 140 is arranged at the other end of the main body 150, and the conveying rod 210 is located inside the main body 150 and at the bottom of the main body 150.

[0061] As shown, the main body 150 is provided with an end of the communication port 120 which can be connected to the reaction furnace in a plug-in manner. The axis of the main body 150 and the axis of the conveying rod 210 are arranged in parallel with each other. A person skilled in the art can understand that the sidewall of the main body 150 is arc-shaped, and through the sidewall of the main body 150, the dust settled from the furnace gas and the raw materials entering the cavity 110 from the feeding port 140 can be introduced into the bottom of the main body 150 so as to be fully brought into the reaction furnace by the conveying rod 210 of the feeding mechanism 200.

[0062] Through the above arrangement, the space inside the main body 150 is large, which can increase the residence time of the furnace gas in the cavity 110, and the dust carried by the furnace gas in the cavity 110 can be fully settled.

[0063] As shown in Figure 1 and Figure 2 The gas guide port 130 is located at the top of the shell 100 away from the side of the communication port 120.

[0064] The above arrangement can ensure the path of the transverse flow of the furnace gas in the cavity 110, increase the residence time of the furnace gas in the cavity 110, and facilitate the dust carried in the furnace gas to be fully settled in the cavity 110.

[0065] In one possible implementation, the shell 100 further comprises a protruding portion 160 located at the top of the main body 150, and the gas guide port 130 is arranged at the top end of the protruding portion 160.

[0066] The protruding portion 160 can be a cylindrical structure, the bottom end of which communicates with the top of the main body portion 150, and the interior of the main body portion 150 and the interior of the protruding portion 160 together define the cavity 110. The main body portion 150 and the protruding portion 160 can be fixed by welding, for example. After the furnace gas enters the cavity 110, it can flow into the protruding portion 160 and flow out of the shell 100 from the gas guide opening 130 at the top of the protruding portion 160. The height and cross-sectional size of the protruding portion 160 can be set as needed by those skilled in the art, and are not limited herein.

[0067] In one possible implementation, an obstacle can also be arranged in the cavity 110, and the furnace gas is blocked by the obstacle to form a turbulent flow in the cavity 110, thereby increasing the residence time of the furnace gas in the cavity 110 and further enabling the dust entrained in the furnace gas to be fully settled in the cavity 110.

[0068] The application also provides a hydrogen fluoride production system, which comprises a reaction furnace and the above-described feed gas guide device, and the communication opening 120 of the feed gas guide device communicates with the reaction furnace.

[0069] The hydrogen fluoride production system also comprises a pre-reactor 400 and a washing tower, the discharge end of the pre-reactor 400 is connected to the feed opening 140 of the shell 100, the communication opening 120 of the shell 100 and the discharge end of the feeding mechanism 200 are both connected to the reaction furnace, and the gas guide opening 130 of the shell 100 is connected to the washing tower.

[0070] The hydrogen fluoride production system provided by the application can fully utilize the raw materials for hydrogen fluoride production, thereby reducing the cost of hydrogen fluoride production. The furnace gas discharged from the reaction furnace has less dust entrained therein when entering the washing tower, thereby reducing the load of the subsequent washing process, reducing the plugging frequency of the packing of the washing tower and the maintenance time, and improving the economic benefit of hydrogen fluoride production.

[0071] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacement for part 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 application.

Claims

1. A feed gas guiding device, characterized in that, The application relates to a feeding and air guiding device for a reaction furnace. The feeding and air guiding device comprises a shell (100) having a cavity (110), a communicating port (120), a feeding port (140) and an air guiding port (130), the communicating port (120), the feeding port (140) and the air guiding port (130) being communicated with the cavity (110) respectively, the communicating port (120) being located on one side of the shell (100) and being configured to be connected with a reaction furnace, the feeding port (140) being configured to feed raw materials mixed by a pre-reactor (400) or a mixer, and the air guiding port (130) being located on the top of the shell (100). A feeding mechanism (200) is partially located in the cavity (110) and is configured to drive the mixed raw materials to continuously pass through the cavity (110) and enter the reaction furnace.

2. The feed gas guiding device of claim 1, wherein An outlet end of the feeding mechanism (200) is arranged in the communicating port (120).

3. The feed gas guiding device of claim 2, wherein The feeding mechanism (200) comprises a conveying rod (210) and a driving mechanism (220) for driving the conveying rod (210) to rotate, and helical blades are arranged on the side wall of the conveying rod (210). One end of the conveying rod (210) is arranged in the communicating port (120), and the other end of the conveying rod (210) extends to the side of the shell (100) away from the communicating port (120).

4. The feed gas guiding device of claim 3, wherein The part of the conveying rod (210) arranged in the communicating port (120) is located at the bottom of the communicating port (120).

5. The feed gas guiding device of claim 3, wherein The side of the shell (100) provided with the communicating port (120) is configured to be connected with the reaction furnace in a plug-in mode.

6. The feed gas guiding device of claim 5, wherein The shell (100) comprises a main body part (150) formed in a cylindrical shape, the inner diameter of the main body part (150) is greater than the diameter of the conveying rod (210), the communicating port (120) is located at one end of the main body part (150), the feeding port (140) is arranged at the other end of the main body part (150), the conveying rod (210) is located in the main body part (150), and the conveying rod (210) is located at the bottom of the main body part (150).

7. The feed gas guiding device of claim 6, wherein The air guiding port (130) is located on the top of the shell (100) and is away from the communicating port (120).

8. The feed gas guiding device of claim 7, wherein The shell (100) further comprises a protruding part (160) located at the top of the main body part (150), and the air guiding port (130) is arranged at the top end of the protruding part (160).

9. The feed gas guiding device of claim 5, wherein, The bottom of the shell (100) is provided with a plurality of supporting seats (170), and the bottom end of each supporting seat (170) is provided with a castor (300).

10. A hydrogen fluoride production system characterized by comprising: The application further relates to a reaction furnace and the feeding and air guiding device according to any one of claims 1-9, and the communicating port (120) of the feeding and air guiding device is communicated with the reaction furnace.

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