An adsorption device prototype for liquid fuel thorium-based molten salt reactor fluorine-containing gas treatment

Abstract

The utility model provides a kind of for liquid fuel thorium-based molten salt reactor fluorine-containing gas processing adsorption device prototype, including vertical cylinder, the inside of vertical cylinder is sequentially provided with filter cavity, active alumina filling cavity and dust collection cavity from top to bottom, and the filter cavity, active alumina filling cavity and dust collection cavity are interconnected between, the bottom and top of vertical cylinder are provided with air inlet and air outlet respectively, the air inlet is connected with the dust collection cavity, the air outlet is connected with the filter cavity. For the utility model, by the filter cavity, the active alumina filling cavity and the dust collection cavity, fluorine gas in liquid fuel thorium-based molten salt reactor can be removed, the safety, reliability and convenience of gas path system of thorium-based molten salt reactor are improved.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, and in particular to a prototype of an adsorption device for treating fluorine-containing gases in a liquid fuel thorium-based molten salt reactor. Background Technology

[0002] In liquid-fuel thorium-based molten salt reactors (LFTRs), handling fluorine gas is a core task for ensuring safety and sustainable operation. Fluorine gas is highly toxic and corrosive; leaks can directly endanger human health and severely corrode reactor structural materials (such as alloy pipes and containers), leading to shortened equipment lifespan or even failure. Furthermore, the high temperatures (approximately 700°C) and neutron irradiation of molten salt reactors can cause the fuel salt (such as FLiBe) to decompose, producing radioactive fluorine isotopes (such as fluorine-18) or volatile fission products like fluorides. If these substances escape into the environment, they can threaten ecological safety through beta radiation or chemical toxicity. Simultaneously, fluorine loss can disrupt the chemical balance of the fuel salt, affecting its thermal conductivity and neutron economy, and reducing reactor efficiency.

[0003] To address these issues, it is necessary to capture and recycle fluorine gas from liquid fuel thorium-based molten salt reactors to maintain the chemical stability of the molten salt.

[0004] Therefore, a device capable of adsorbing fluorine gas is needed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides an adsorption device prototype for treating fluorine-containing gas in liquid fuel thorium-based molten salt reactors, which can remove fluorine gas from liquid fuel thorium-based molten salt reactors and improve the safety, reliability and convenience of the gas path system of thorium-based molten salt reactors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A prototype adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor for liquid fuel includes a vertical cylindrical body. Inside the vertical cylindrical body, from top to bottom, are arranged a filter chamber, an activated alumina filling chamber, and a dust collection chamber, all of which are interconnected. An air inlet and an air outlet are respectively provided at the bottom and top of the vertical cylindrical body. The air inlet is connected to the dust collection chamber, and the air outlet is connected to the filter chamber.

[0007] Furthermore, a first gas buffer cavity is provided within the activated alumina filling cavity.

[0008] Furthermore, a first positioning frame is provided in the activated alumina filling cavity, and a first perforated plate is provided on the upper and lower ends of the first positioning frame. A first pressing post is provided between the two first perforated plates, and a first gas buffer cavity is formed between the two first perforated plates and the inner wall of the vertical cylinder.

[0009] Furthermore, the first mesh plate at the upper end of the first positioning frame is inclined, and the activated alumina filling cavity is provided with a first discharge port at the lowest end of the first mesh.

[0010] Furthermore, a second perforated plate is provided between the dust collection chamber and the activated alumina filling chamber, the air inlet is connected to the dust collection chamber, and a second discharge port is provided at the bottom of the dust collection chamber. A third discharge port is provided at the lowest end of the activated alumina filling chamber located at the second perforated plate.

[0011] Furthermore, a second gas buffer cavity is provided between the filter cavity and the activated alumina filling cavity.

[0012] Furthermore, a second positioning frame is provided between the filter cavity and the activated alumina filling cavity. A third mesh plate and a fourth mesh plate are respectively provided at the upper and lower ends of the second positioning frame. A second clamping column is provided between the third mesh plate and the fourth mesh plate, and a second gas buffer cavity is formed between the third mesh plate, the third mesh plate and the inner wall of the vertical cylinder.

[0013] Furthermore, the filter cavity is provided with multiple filter elements.

[0014] Furthermore, the vertical cylindrical body includes a first cylindrical body, a second cylindrical body, and a cover. The dust collection chamber and the activated alumina filling chamber are located in the first cylindrical body, the filter chamber is located in the second cylindrical body, and the air outlet is located on the cover. The first cylindrical body and the second cylindrical body, as well as the cover and the second cylindrical body, are connected by flange bolts.

[0015] Furthermore, pressure gauges are provided on the air inlet and the cover.

[0016] Compared to existing technologies, the present invention provides a prototype adsorption device for treating fluorine-containing gases in liquid fuel thorium-based molten salt reactors. The device includes a vertical cylindrical body. Inside the cylindrical body, from top to bottom, are sequentially arranged a filter chamber, an activated alumina-filled chamber, and a dust collection chamber, all of which are interconnected. An air inlet and an air outlet are respectively located at the bottom and top of the cylindrical body. The air inlet communicates with the dust collection chamber, and the air outlet communicates with the filter chamber. This invention, through the filter chamber, the activated alumina-filled chamber, and the dust collection chamber, can remove fluorine gas from liquid fuel thorium-based molten salt reactors, improving the safety, reliability, and convenience of the gas path system of the thorium-based molten salt reactor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the adsorption device prototype for treating fluorine-containing gases in a thorium-based molten salt reactor using liquid fuel, provided by this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the prototype adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor using liquid fuel, provided by this utility model.

[0020] Explanation of reference numerals in the attached diagram: Vertical cylinder-1, filter chamber-2, activated alumina filling chamber-3, dust collection chamber-4, air inlet-5, air outlet-6, first gas buffer cavity-7, first positioning frame-8, first mesh plate-9, first pressing column-10, first discharge port-11, second mesh plate-12, second discharge port-13, third discharge port-14, second gas buffer cavity-15, second positioning frame-16, third mesh plate-17, fourth mesh plate-18, filter element-19, first cylinder-20, second cylinder-21, cover-22, pressure gauge-23. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] In this utility model, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms “first” and “second” as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish one element from another. When used herein, the singular forms “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having” specify the presence of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figure 1 and Figure 2 As shown, the present invention provides an adsorption device prototype for treating fluorine-containing gases in a thorium-based molten salt reactor for liquid fuel. The device includes a vertical cylindrical body 1. Inside the vertical cylindrical body 1, from top to bottom, are arranged a filter chamber 2, an activated alumina-filled chamber 3, and a dust collection chamber 4, all interconnected. An air inlet 5 and an air outlet 6 are respectively provided at the bottom and top of the vertical cylindrical body 1. The air inlet 5 communicates with the dust collection chamber 4, and the air outlet 6 communicates with the filter chamber 2.

[0028] It is understood that the fluorine-containing gas enters through the inlet 5, passes sequentially through the dust collection chamber 4, the activated alumina filling chamber 3, and the filter chamber 2, and finally exits through the outlet 6 as a fluorine-free gas. It should be noted that the filter chamber 2, the activated alumina filling chamber 3, and the dust collection chamber 4 are interconnected, ensuring that the filling material in each chamber does not easily fall into adjacent chambers, while allowing gas to pass through each chamber.

[0029] Because the filling material in the activated alumina filling cavity 3 has a small diameter, it can easily fall into the dust collection cavity 4 through the hole between the activated alumina filling cavity 3 and the dust collection cavity 4. In other words, the dust collection cavity 4 serves to collect dust. In addition, the dust collection cavity 4 can also temporarily store gas. That is, the gas entering from the air inlet 5 can be temporarily stored in the dust collection cavity 4, so as to facilitate its rapid entry into the activated alumina filling cavity 3 and improve the defluorination efficiency.

[0030] Compared with the prior art, the technical solution of this utility model can remove fluorine gas from the liquid fuel thorium-based molten salt reactor through the filter cavity 2, the activated alumina filling cavity 3 and the dust collection cavity 4, thereby improving the safety, reliability and convenience of the gas path system of the thorium-based molten salt reactor.

[0031] Furthermore, a first gas buffer chamber 7 is provided inside the activated alumina filling cavity 3. The first buffer chamber can be used to temporarily store gas, facilitating the entry of sufficient gas into the activated alumina filling cavity 3.

[0032] Furthermore, a first positioning frame 8 is provided inside the activated alumina filling cavity 3. A first perforated plate 9 is provided on both the upper and lower ends of the first positioning frame 8. A first clamping column 10 is provided between the two first perforated plates 9. The first clamping column 10 can fix the two first perforated plates 9 to both ends of the first positioning frame 8 to prevent the two first perforated plates 9 from shaking. The two first perforated plates 9 and the inner wall of the vertical cylinder 1 form the first gas buffer cavity 7. The first clamping column 10 and the first positioning frame 8 ensure the stability of the first gas buffer cavity 7 and ensure that the first gas buffer cavity 7 can store gas smoothly.

[0033] Furthermore, the first mesh plate 9 at the upper end of the first positioning frame 8 is inclined, and the activated alumina filling cavity 3 is provided with a first discharge port 11 at the lowest end of the first mesh. The inclined arrangement of the first mesh plate 9 at the upper end of the first positioning frame 8 facilitates the discharge of activated alumina from the activated alumina filling cavity 3 through the first discharge port 11.

[0034] Furthermore, a second perforated plate 12 is provided between the dust collection chamber 4 and the activated alumina filling chamber 3. The air inlet 5 communicates with the dust collection chamber, and a second discharge port 13 is provided at the bottom of the dust collection chamber. A third discharge port 14 is provided at the lowest end of the activated alumina filling chamber 3, located at the second perforated plate 12. It can be understood that after the gas adsorption process is completed, the first discharge port 11 is used to discharge the alumina in the activated alumina filling chamber 3, while the dust collection chamber 4 is used to collect the alumina powder that falls from the second perforated plate 12. Periodic discharge keeps the dust collection chamber 4 hollow, ensuring it can store a certain amount of gas, allowing sufficient gas to pass through the second perforated plate 12 into the activated alumina filling chamber 3, thereby improving the defluorination efficiency.

[0035] Furthermore, a second gas buffer cavity 15 is provided between the filter cavity 2 and the activated alumina filling cavity 3. Similarly, the principle of the second gas buffer cavity 15 is the same as that of the first gas buffer cavity 7.

[0036] Furthermore, a second positioning frame 16 is provided between the filter chamber 2 and the activated alumina filling chamber 3. A third mesh plate 17 and a fourth mesh plate 18 are respectively provided at the upper and lower ends of the second positioning frame 16. A second clamping post 24 is provided between the third mesh plate 17 and the fourth mesh plate 18, and a second gas buffer cavity 15 is formed between the third mesh plate 17, the fourth mesh plate 18, and the inner wall of the vertical cylinder 1. The second gas buffer cavity 15 can be used to temporarily store gas, facilitating sufficient gas to enter the filter chamber 2, thereby improving the defluorination efficiency.

[0037] Furthermore, the filter chamber 2 is provided with multiple filter elements 19. It should be noted that the gas entering the filter chamber 2 from the second gas buffer cavity 15 will be filtered by the filter elements 19 and then discharged from the gas outlet 6.

[0038] Furthermore, the vertical cylindrical body 1 includes a first cylindrical body 20, a second cylindrical body 21, and a cover 22. The dust collection chamber 4 and the activated alumina filling chamber 3 are located in the first cylindrical body 20, the filter chamber 2 is located in the second cylindrical body 21, and the air outlet 6 is located on the cover 22. The first cylindrical body 20 and the second cylindrical body 21, as well as the cover 22 and the second cylindrical body 21, are connected by flange bolts. It is understood that dividing the vertical cylindrical body 1 into two parts facilitates internal maintenance and allows for convenient repairs in case of internal blockage.

[0039] Furthermore, pressure gauges 23 are installed on the air inlet 5 and the cover 22. The pressure gauges 23 can detect the gas pressure values ​​at the air inlet 5 and the air outlet 6, that is, they can clearly understand the air intake and exhaust volume of the vertical cylinder 1, and thus reflect the defluorination effect.

[0040] In summary, the present invention provides an adsorption device prototype for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel. The first buffer chamber allows for temporary gas storage, ensuring sufficient gas can enter the activated alumina-filled cavity. The first mesh plate at the upper end of the first positioning frame is inclined, facilitating the discharge of activated alumina from the activated alumina-filled cavity through the first discharge port. Dividing the vertical cylinder into two parts facilitates internal maintenance and allows for convenient repair in case of blockage. This invention, through the filter cavity, the activated alumina-filled cavity, and the dust collection cavity, can remove fluorine gas from a thorium-based molten salt reactor with liquid fuel, improving the safety, reliability, and convenience of the gas path system of the thorium-based molten salt reactor.

[0041] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A prototype adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel, characterized in that, The device includes a vertical cylindrical body (1), inside which a filter chamber (2), an activated alumina filling chamber (3), and a dust collection chamber (4) are arranged sequentially from top to bottom. The filter chamber (2), the activated alumina filling chamber (3), and the dust collection chamber (4) are interconnected. The bottom and top of the vertical cylindrical body (1) are respectively provided with an air inlet (5) and an air outlet (6). The air inlet (5) is connected to the dust collection chamber (4), and the air outlet (6) is connected to the filter chamber (2).

2. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 1, characterized in that, The activated alumina filling cavity (3) is provided with a first gas buffer cavity (7).

3. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 2, characterized in that, The activated alumina filling cavity (3) is provided with a first positioning frame (8), and a first mesh plate (9) is provided on the upper and lower ends of the first positioning frame (8). A first pressing column (10) is provided between the two first mesh plates (9), and a first gas buffer cavity (7) is formed between the two first mesh plates (9) and the inner wall of the vertical cylinder (1).

4. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 3, characterized in that, The first mesh plate (9) at the upper end of the first positioning frame (8) is inclined, and the active alumina filling cavity (3) is provided with a first discharge port (11) at the lowest end of the first mesh.

5. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 1, characterized in that, A second perforated plate (12) is provided between the dust collection chamber (4) and the activated alumina filling chamber (3). The air inlet (5) is connected to the dust collection chamber. A second discharge port (13) is provided at the bottom of the dust collection chamber. A third discharge port (14) is provided at the lowest end of the activated alumina filling chamber (3) on the second perforated plate (12).

6. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 1, characterized in that, A second gas buffer cavity (15) is provided between the filter cavity (2) and the activated alumina filling cavity (3).

7. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 6, characterized in that, A second positioning frame (16) is provided between the filter cavity (2) and the activated alumina filling cavity (3). A third mesh plate (17) and a fourth mesh plate (18) are respectively provided at the upper and lower ends of the second positioning frame (16). A second pressing column (24) is provided between the third mesh plate (17) and the fourth mesh plate (18). A second gas buffer cavity (15) is formed between the third mesh plate (17), the fourth mesh plate (18) and the inner wall of the vertical cylinder (1).

8. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 1, characterized in that, The filter cavity (2) is provided with multiple filter elements (19).

9. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 1, characterized in that, The vertical cylindrical body (1) includes a first cylindrical body (20), a second cylindrical body (21), and a cover (22). The dust collection chamber (4) and the activated alumina filling chamber (3) are located in the first cylindrical body (20). The filter chamber (2) is located in the second cylindrical body (21). The air outlet (6) is located on the cover (22). The first cylindrical body (20) and the second cylindrical body (21), and the cover (22) and the second cylindrical body (21) are connected by flange bolts.

10. The prototype of the adsorption device for treating fluorine-containing gases in a thorium-based molten salt reactor with liquid fuel according to claim 9, characterized in that, Pressure gauges (23) are provided on the air inlet (5) and the cover (22).

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