Electrolysis device for preventing condensed salt from blocking tail gas pipe

Abstract

The utility model discloses an electrolyzer for preventing condensed salt from blocking a tail gas pipe, which comprises an electrolytic bath, a first gas inlet and a first gas outlet are correspondingly arranged on the opposite side walls of the electrolytic bath and are used for being communicated with protective atmosphere; the transition bin is arranged to be connected with the first gas outlet of the electrolytic bath and is used for collecting the fused salt mingled in the protective atmosphere; wherein the transition bin comprises a barrel, the top of the barrel is provided with an opening, the opening is communicated with an inner containing cavity of the barrel, the opposite side walls of the barrel are correspondingly provided with a second air inlet and a second air outlet, the second air inlet is communicated with the first air outlet, and the second air outlet is communicated with the tail gas pipe; the cylinder cover is detachably arranged on the opening; when the electrolysis device works, the fused salt in the electrolytic bath is gasified and enters the barrel from the second gas inlet of the barrel along with the protective atmosphere, the gaseous fused salt is condensed and deposited in the inner containing cavity of the barrel, and the protective atmosphere enters the tail gas pipe from the second gas outlet of the barrel.

Description

Technical Field

[0001] The utility model belongs to the technical field of molten salt electrolysis equipment, and particularly relates to an electrolysis device for preventing condensate salt from blocking a tail gas pipe. Background Art

[0002] The molten salt electrolysis method can be used for preparing or purifying refractory rare metals. The electrolysis process is carried out in an oxygen-free environment at high temperature, and an inert gas (usually argon) needs to be introduced into the electrolysis cell for protection to prevent air from entering and oxidizing the electrolysis products.

[0003] Some molten salt components have a high saturated vapor pressure and will vaporize during the electrolysis process. As the inert gas enters the tail gas pipe from the gas outlet on the electrolysis cell, due to the large temperature difference between the tail gas pipe and the heating area of the electrolysis cell, the gaseous molten salt will quickly solidify on the inner wall of the tail gas pipe. As the electrolysis progresses, the condensate salt on the pipe wall increases, easily blocking the tail gas pipe, causing the pressure in the electrolysis cell to rise and posing a safety hazard. Summary of the Utility Model

[0004] In view of this, some embodiments disclose an electrolysis device for preventing condensate salt from blocking a tail gas pipe, including:

[0005] An electrolysis cell, with a first air inlet and a first air outlet correspondingly arranged on the opposite side walls of the electrolysis cell for connecting a protective atmosphere;

[0006] A transition chamber, arranged to be connected to the first air outlet of the electrolysis cell for collecting the molten salt mixed in the protective atmosphere;

[0007] Among them, the transition chamber includes:

[0008] A cylinder body, the top of the cylinder body is set to be open and connected to the internal cavity of the cylinder body. A second air inlet and a second air outlet are correspondingly arranged on the opposite side walls of the cylinder body. The second air inlet is arranged to be connected to the first air outlet, and the second air outlet is arranged to be connected to the tail gas pipe;

[0009] A cylinder cover, detachably arranged on the opening;

[0010] When the electrolysis device works, the molten salt in the electrolysis cell vaporizes and enters the cylinder body from the second air inlet of the cylinder body along with the protective atmosphere. The gaseous molten salt condenses and deposits in the internal cavity of the cylinder body, and the protective atmosphere enters the tail gas pipe from the second air outlet of the cylinder body.

[0011] In the electrolysis device for preventing condensate salt from blocking a tail gas pipe disclosed in some embodiments, the cylinder cover and the cylinder body are connected by threads.

[0012] In the electrolysis device for preventing condensate salt from blocking a tail gas pipe disclosed in some embodiments, the internal cavity of the cylinder body gradually narrows from the top of the cylinder body to the bottom of the cylinder body.

[0013] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments has a U-shaped longitudinal cross-sectional shape of the cylinder body.

[0014] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments has a discharge port opened at the bottom of the cylinder body, and a collection box is detachably arranged on the discharge port.

[0015] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments, the collection box is threadedly connected to the discharge port of the cylinder body.

[0016] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments further includes a partition assembly, and the partition assembly is detachably arranged in the inner cavity of the cylinder body.

[0017] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments, the partition assembly includes:

[0018] A partition board, the partition board is detachably inserted into the cylinder cover in the vertical direction, the first end of the partition board is located above the cylinder cover, and the second end of the partition board extends into the inner cavity of the cylinder body; an air flow channel is formed between the second end of the partition board and the bottom of the cylinder body;

[0019] Partition bars, a plurality of which are arranged at intervals on both side surfaces of the partition board along the length direction of the partition board.

[0020] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments further includes a vibrator, and the vibrator is adaptively arranged on the first end of the partition board.

[0021] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in some embodiments further includes a temperature regulating sleeve, and the temperature regulating sleeve is adaptively sleeved on the outer surface of the cylinder body.

[0022] The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in the embodiments of the present utility model is provided with a connection transition chamber at the gas outlet of the electrolytic cell. The temperature of the transition chamber is lower than that of the electrolytic cell. After the molten salt mixed in the protective atmosphere enters the transition chamber, it will condense and deposit in the transition chamber, thereby preventing the molten salt from entering the tail gas pipe along with the protective atmosphere and causing blockage to the tail gas pipe; and the transition chamber is composed of a cylinder body and a cylinder cover which are detachably connected. When the amount of molten salt condensed and deposited in the transition chamber becomes large, the cylinder cover can be opened for cleaning. The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in the embodiments of the present utility model can keep the air pressure in the electrolytic cell stable, keep the tail gas pipe unobstructed, and can also recover the molten salt mixed in the protective atmosphere. Description of the Drawings

[0023] Figure 1 Structural schematic diagram of the electrolysis device for preventing salt condensation from blocking the tail gas pipe in Embodiment 1;

[0024] Figure 2Schematic diagram of the working electrolysis device in Example 2 for preventing salt condensation from blocking the tail gas pipe.

[0025] Reference numerals

[0026] 1 Electrolytic cell 2 Transition chamber

[0027] 3 Tail gas pipe 4 Baffle assembly

[0028] 11 First air inlet 12 First air outlet

[0029] 21 Cylinder body 22 Cylinder cover

[0030] 211 Second air inlet 212 Second air outlet

[0031] 100 Anode 200 Cathode

[0032] 300 Molten salt Detailed implementation manners

[0033] Here, the special term "Example" does not necessarily mean that any example described as "exemplary" is better than or superior to other examples. For the performance index tests in the embodiments of this application, unless otherwise specified, conventional test methods in the art are adopted. It should be understood that the terms described in this application are only used to describe specific implementation manners and are not used to limit the content disclosed in this application.

[0034] Unless otherwise specified, the technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the technical field to which this application belongs; other test methods and technical means not specifically noted in this application refer to the experimental methods and technical means commonly adopted by those of ordinary skill in the art.

[0035] The terms "substantially" and "about" used herein are used to describe small fluctuations. For example, they can refer to less than or equal to ±5%, such as less than or equal to ±2%, such as less than or equal to ±1%, such as less than or equal to ±0.5%, such as less than or equal to ±0.2%, such as less than or equal to ±0.1%, such as less than or equal to ±0.05%. Numerical data presented in range format herein is used only for convenience and brevity and should therefore be interpreted flexibly as including not only the values explicitly listed as the bounds of the range, but also all individual values or sub-ranges included within that range. For example, the numerical range of "1 to 5%" should be interpreted as including not only the explicitly listed values from 1% to 5%, but also individual values and sub-ranges within the indicated range. Thus, within this numerical range, individual values such as 2%, 3.5%, and 4% are included, and sub-ranges such as 1% to 3%, 2% to 4%, and 3% to 5% are included, etc. This principle also applies to ranges that list only one numerical value. In addition, such an interpretation applies regardless of the width of the range or the characteristics described.

[0036] In this document, including in the claims, conjunctions such as "comprising", "including", "carrying", "having", "containing", "involving", "accommodating", etc. are understood to be open-ended, that is, "including but not limited to". Only the conjunctions "consisting of" and "composed of" are closed conjunctions.

[0037] For a better illustration of the content of this application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that this application can also be implemented without certain specific details. In the embodiments, some methods, means, instruments, devices, etc. well-known to those skilled in the art are not described in detail in order to highlight the gist of this application.

[0038] On the premise of no conflict, the technical features disclosed in the embodiments of this application can be combined arbitrarily, and the obtained technical solutions belong to the content disclosed in the embodiments of this application. It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. mentioned in this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing technical features and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention unless it conflicts with the context content. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance unless it conflicts with the context content.

[0039] In some embodiments, the electrolysis device for preventing salt condensation from clogging the tail gas pipe includes:

[0040] An electrolysis cell, on the opposite side walls of the electrolysis cell, a first air inlet and a first air outlet are correspondingly arranged for communicating with a protective atmosphere; the positions of the first air inlet and the first air outlet are opposite to each other, so as to reduce the flow path of the protective atmosphere, ensure a pure internal environment, improve the protection effect, reduce the consumption of gas, and improve the safety of the system;

[0041] A transition chamber, arranged to be connected to the first air outlet of the electrolysis cell for collecting the molten salt mixed in the protective atmosphere;

[0042] Wherein, the transition chamber includes:

[0043] A cylinder body, the top of the cylinder body is set to be open and is connected to the internal cavity of the cylinder body. On the opposite side walls of the cylinder body, a second air inlet and a second air outlet are correspondingly arranged. The second air inlet is arranged to be connected to the first air outlet, and the second air outlet is arranged to be connected to the tail gas pipe;

[0044] The cylinder cover is detachably arranged on the opening; when the molten salt condensed and deposited in the cylinder body increases, the cylinder cover can be opened to clean and collect the molten salt in the cylinder body;

[0045] When the electrolysis device works, the molten salt in the electrolytic cell gasifies and enters the cylinder body through the second air inlet of the cylinder body along with the protective atmosphere. The temperature of the cylinder body is lower than that of the electrolytic cell. The gaseous molten salt condenses and deposits in the inner cavity of the cylinder body. The protective atmosphere enters the tail gas pipe through the second air outlet of the cylinder body.

[0046] In some embodiments, the cylinder cover is threadedly connected to the cylinder body. Generally, a sealing ring is arranged at the connection between the cylinder cover and the cylinder body.

[0047] In some embodiments, the inner cavity of the cylinder body gradually narrows from the top of the cylinder body to the bottom of the cylinder body, so that the condensed molten salt naturally falls and deposits at the bottom of the cylinder body.

[0048] In some embodiments, the longitudinal cross-sectional shape of the cylinder body is U-shaped, so that the condensed molten salt naturally falls and deposits at the bottom of the cylinder body.

[0049] In some embodiments, a discharge port is opened at the bottom of the cylinder body, and a collection box is detachably arranged on the discharge port. The gaseous molten salt enters the cylinder body and condenses and falls into the collection box. The collection box can be removed to recycle the molten salt in the collection box and clean the inside of the cylinder body.

[0050] In some embodiments, the collection box is threadedly connected to the discharge port of the cylinder body. Generally, a sealing ring is arranged at the connection between the collection box and the discharge port of the cylinder body.

[0051] In some embodiments, the electrolysis device for preventing condensed salt from blocking the tail gas pipe further includes a partition assembly, and the partition assembly is detachably arranged in the inner cavity of the cylinder body.

[0052] In some embodiments, the partition assembly includes:

[0053] A partition board, which is detachably inserted into the cylinder cover in the vertical direction. The first end of the partition board is located above the cylinder cover, and the second end of the partition board extends into the inner cavity of the cylinder body, below the second air inlet of the cylinder body and above the bottom of the inner cavity of the cylinder body; an air flow channel is formed between the second end of the partition board and the bottom of the cylinder body; the protective atmosphere carrying gaseous molten salt enters the cylinder body through the second air inlet of the cylinder body, impacts on the partition board and changes the flow direction, flows along the partition board to the bottom of the cylinder body, and finally flows out from the air flow channel at the bottom of the cylinder body to the second air outlet of the cylinder body; during the flow of the protective atmosphere, the gaseous molten salt mixed in the protective atmosphere gradually condenses and falls into the cylinder body, separating from the protective atmosphere; the partition board can prevent the protective atmosphere from directly entering the tail gas pipe through the second air outlet with gaseous molten salt;

[0054] Partition bars are arranged at intervals on both side surfaces of the partition board along the length direction of the partition board; the partition bars can increase the contact area with the protective atmosphere, so that the gaseous molten salt carried in the protective atmosphere can be condensed and deposited in the cylinder as much as possible; generally, the partition bars can be arranged obliquely downward on the partition board to facilitate shaking off the condensed salt adhering to the partition bars.

[0055] In some embodiments, the electrolysis device for preventing condensed salt from blocking the tail gas pipe further includes a vibrator, which is adaptively arranged on the first end of the partition board and is used to vibrate and shed the molten salt condensed and adhered to the partition assembly and collect it in the cylinder.

[0056] In some embodiments, the electrolysis device for preventing condensed salt from blocking the tail gas pipe further includes a temperature regulating sleeve, which is adaptively sleeved on the outer surface of the cylinder. The temperature regulating sleeve is used to adjust the temperature of the cylinder, so as to maintain an appropriate temperature difference between the electrolytic cell and the cylinder, which is beneficial to the complete condensation of the gaseous molten salt in the cylinder, complete separation from the protective atmosphere, and complete collection of the condensed molten salt in the cylinder. Generally, the temperature of the cylinder can be adjusted through the temperature regulating sleeve according to the ambient temperature during electrolysis work, so that the gaseous molten salt can be completely separated from the protective atmosphere in the cylinder.

[0057] The following further exemplarily illustrates the technical details in combination with embodiments.

[0058] Embodiment 1

[0059] Figure 1 It is a schematic structural diagram of the electrolysis device for preventing condensed salt from blocking the tail gas pipe disclosed in Embodiment 1.

[0060] As Figure 1 shown, the electrolysis device for preventing condensed salt from blocking the tail gas pipe includes an electrolytic cell 1, and a first air inlet 11 and a first air outlet 12 are respectively arranged on the upper parts of the left and right side walls of the electrolytic cell 1; a transition chamber 2 is arranged on the right side of the electrolytic cell 1, the transition chamber 2 includes a cylinder 21 and a cylinder cover 22 detachably arranged on the top of the cylinder 21, and a second air inlet 211 and a second air outlet 212 are respectively arranged on the upper parts of the left and right side walls of the cylinder 21. The second air inlet 211 is communicated with the first air outlet 12 through a pipeline, the second air outlet 212 is communicated with the tail gas pipe 3, and a partition assembly 4 is also arranged in the cylinder 21.

[0061] When the electrolysis device disclosed in this embodiment works, the protective atmosphere enters the electrolytic cell 1 from the first air inlet 11, a part of the molten salt in the electrolytic cell 1 is vaporized, and along with the protective atmosphere, it is discharged from the electrolytic cell 1 through the first air outlet 12 and enters the cylinder 21 from the second air inlet 211. The temperature of the cylinder 21 is lower than that of the electrolytic cell 1, and the gaseous molten salt in the protective atmosphere is condensed and deposited at the bottom of the cylinder 21 and separated from the protective atmosphere. The protective atmosphere bypasses the partition assembly 4 and enters the tail gas pipe 3 from the second air outlet 212.

[0062] Example 2

[0063] Figure 2 It is a working schematic diagram of the electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in Example 2.

[0064] As Figure 2 shown, the perforated metal basket anode 100 provided with titanium sponge and the pure titanium cathode 200 are arranged in the electrolytic cell 1 filled with molten salt electrolyte, and argon is introduced through the first air inlet 11 to start electrolysis; during the electrolysis process, the molten salt electrolyte at the liquid level vaporizes and is discharged from the electrolytic cell 1 together with argon through the first air outlet 12, and enters the cylinder 21 through the second air inlet 211. The temperature of the cylinder 21 is lower than that of the electrolytic cell 1, and the temperature difference is relatively large. The gaseous molten salt condenses and deposits at the bottom of the cylinder 21 as solid molten salt 300 and is separated from argon. The argon bypasses the partition assembly 4 and enters the tail gas pipe 3 through the second air outlet 212.

[0065] For the electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in the embodiment of the present invention, a connection transition chamber is arranged at the air outlet of the electrolytic cell. The temperature of the transition chamber is lower than that of the electrolytic cell. The molten salt mixed in the protective atmosphere will condense and deposit in the transition chamber after entering the transition chamber, so as to prevent the molten salt from entering the tail gas pipe along with the protective atmosphere and causing blockage to the tail gas pipe; and the transition chamber is composed of a cylinder and a cylinder cover which are detachably connected. When the molten salt condensed and deposited in the transition chamber becomes more, the cylinder cover can be opened for cleaning. The electrolysis device for preventing salt condensation from blocking the tail gas pipe disclosed in the embodiment of the present invention can keep the air pressure in the electrolytic cell stable, keep the tail gas pipe unobstructed, and can also recover the molten salt mixed in the protective atmosphere.

[0066] The technical solutions disclosed in the present invention and the technical details disclosed in the embodiments are only exemplary explanations of the inventive concept of the present invention, and do not constitute limitations on the technical solutions of the present invention. Any conventional changes, substitutions or combinations made to the technical details disclosed in the embodiments of the present invention have the same inventive concept as the present invention and are within the protection scope of the claims of the present invention.

Claims

1. An electrolysis device for preventing condensate salt from clogging the tail gas pipe, characterized in that, Comprising: An electrolytic cell, on the opposite side walls of which a first air inlet and a first air outlet are correspondingly arranged for communicating with a protective atmosphere; A transition chamber, arranged to be connected to the first air outlet of the electrolytic cell for collecting molten salt mixed in the protective atmosphere; Wherein, the transition chamber comprises: A cylinder body, the top of which is set to be open and is communicated with the internal cavity of the cylinder body. On the opposite side walls of the cylinder body, a second air inlet and a second air outlet are correspondingly arranged. The second air inlet is arranged to be communicated with the first air outlet, and the second air outlet is arranged to be communicated with a tail gas pipe; A cylinder cover, detachably arranged on the opening; When the electrolytic device works, the molten salt in the electrolytic cell vaporizes and enters the cylinder body from the second air inlet of the cylinder body along with the protective atmosphere, and the gaseous molten salt condenses and deposits in the internal cavity of the cylinder body, and the protective atmosphere enters the tail gas pipe from the second air outlet of the cylinder body.

2. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 1, wherein The cylinder cover and the cylinder body are connected by threads.

3. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 1, characterized in that, The internal cavity of the cylinder body gradually narrows from the top of the cylinder body to the bottom of the cylinder body.

4. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 1, characterized in that, The longitudinal cross-sectional shape of the cylinder body is U-shaped.

5. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 1, characterized in that, A discharge port is formed at the bottom of the cylinder body, and a collection box is detachably arranged on the discharge port.

6. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 5, characterized in that, The collection box and the discharge port of the cylinder body are connected by threads.

7. The electrolysis device for preventing condensate salt from clogging the tail gas pipe according to claim 1, characterized in that, It further comprises a baffle assembly, which is detachably arranged in the internal cavity of the cylinder body.

8. The electrolysis device for preventing condensate salt from clogging the tail gas pipe according to claim 7, characterized in that, The baffle assembly comprises: A baffle plate, which is detachably inserted into the cylinder cover in the vertical direction. The first end of the baffle plate is located above the cylinder cover, and the second end of the baffle plate extends into the internal cavity of the cylinder body; an air flow channel is formed between the second end of the baffle plate and the bottom of the cylinder body; Baffle strips, a plurality of which are arranged at intervals on both side surfaces of the baffle plate along the length direction of the baffle plate.

9. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 8, characterized in that, It further comprises a vibrator, which is adaptively arranged on the first end of the baffle plate.

10. The electrolysis device for preventing salt condensation from clogging the tail gas pipe according to claim 1, characterized in that, It further comprises a temperature regulating sleeve, which is adaptively sleeved on the outer surface of the cylinder body.

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