Rectifying tower for concentrating krypton-xenon liquid in liquid oxygen

Abstract

The utility model relates to the technical field of liquid oxygen rectification, in particular to a rectifying tower for concentrating krypton-xenon liquid in liquid oxygen, which comprises a rectifying tower body, a primary filter is communicated with the upper position of the left side of the rectifying tower body, and a liquid inlet pipe orifice body is communicated with one side of the primary filter far away from the rectifying tower body. A first filter screen, a second filter screen, an annular plate, a vertical clamping plate, a convex block, a pressure plate, a threaded clamping head and an inclined supporting rod are arranged on the front end of the primary filter, a front flaring is integrally formed in the front end of the primary filter, and a sealing plug disc is in threaded connection with the interior of the front flaring. The sealing plug disc, the central rotating shaft, the first filter screen, the second filter screen, the annular plate, the vertical clamping plate, the convex block, the pressure plate, the threaded clamping head and the inclined supporting rod are arranged; according to the rectifying tower for concentrating the krypton-xenon liquid in the liquid oxygen, when the liquid oxygen is introduced for working, a combined multi-stage filtering structure is utilized for pre-filtering and impurity removal of the liquid oxygen with high impurity content, so that the risk that a liquid outlet is easily blocked when the liquid oxygen is operated due to the fact that impurities are directly fed into a liquid distributor is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid oxygen distillation technology, specifically a distillation column for concentrating krypton-xenon liquid in liquid oxygen. Background Technology

[0002] In the process of extracting krypton xenon from liquid oxygen, liquid oxygen distillation is a commonly used and effective extraction method. This method mainly utilizes the boiling point difference between krypton and xenon and oxygen. Through multiple partial condensation and partial evaporation processes in the distillation column, the components are separated to obtain concentrated krypton xenon liquid. At the same time, the whole method has the advantages of high efficiency, safety and low cost.

[0003] In existing technologies, when liquid oxygen is fed into a distillation column for distillation, it is typically fed into a microporous liquid distributor through the inlet pipe for multi-directional flow splitting. However, considering that liquid oxygen may contain high levels of impurities in some cases, if these impurities are not pre-treated, the outlet of the liquid distributor may become clogged during the process of the liquid oxygen being carried out by the distributor. This can hinder the normal distillation operation of the entire column. Therefore, to address these issues, a distillation column for concentrating krypton-xenon liquid in liquid oxygen is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a distillation column for concentrating krypton-xenon liquid in liquid oxygen, in order to solve the problem mentioned in the background art that when liquid oxygen is transported into the distillation column for distillation, impurities can easily clog the liquid distributor.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A distillation column for concentrating krypton-xenon liquid in liquid oxygen includes a distillation column body. A primary filter is connected to the upper left side of the distillation column body. An inlet pipe body is connected to the side of the primary filter away from the distillation column body. The front end of the primary filter is integrally formed with a front flared end. A sealing plug is threadedly connected to the inside of the front flared end. A central rotating shaft extending into the interior of the primary filter is fixedly connected to the rear of the sealing plug. A first filter screen is arranged adjacent to the left side of the central rotating shaft, and a second filter screen is arranged adjacent to the right side of the central rotating shaft. The first filter screen, the central rotating shaft, and the second filter screen are fixedly connected together by several inclined support rods. Two ring plates are respectively abutted at the upper and lower ends of the outer surface of the second filter screen. The upper and lower ring plates are fixedly connected together by vertical clamping plates.

[0007] Preferably, a first bend is connected to the lower left side of the distillation column, and a reboiler is connected to the vertical end of the first bend.

[0008] Preferably, a second bend is connected to the top of the distillation column, a condenser is connected to the vertical end of the second bend, and a reflux tank is connected to the lower part of the condenser.

[0009] Preferably, the interior of the front flare and the interior of the primary filter are connected. The cavity reserved inside the primary filter and the irregular structure formed by the two ring plates are sized to match. The top two sides of the ring plates located at the lower part of the interior of the primary filter are respectively fixedly connected with protrusions, and the protrusions are hemispherical in shape.

[0010] Preferably, the first filter screen and the second filter screen are respectively inserted into the gap formed by the upper and lower ring plates. A pressure plate is fixedly connected to the rear end of the central rotating shaft, and a threaded clamping connector is fixedly connected to the rear end of the pressure plate. A threaded groove structure that is threadedly connected to the threaded clamping connector is provided in the middle of the vertical clamping plate. Three sets of inclined support rods are provided in pairs. The screen surface of the first filter screen is directly opposite the liquid inlet of the primary filter, and the first filter screen and the second filter screen are arranged in parallel.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In this invention, the sealing plug, central rotating shaft, first filter screen, second filter screen, ring plate, vertical clamping plate, protrusion, pressure plate, threaded clamping joint, and inclined support rod facilitate the pre-filtration and impurity removal of liquid oxygen containing high impurity content in the distillation column for concentrating krypton-xenon liquid during operation. This is achieved through the connection of the pre-filter, inlet pipe body, and front flare. The combined multi-stage filtration structure, consisting of the sealing plug, central rotating shaft, first filter screen, second filter screen, ring plate, vertical clamping plate, protrusion, pressure plate, threaded clamping joint, and inclined support rod, prevents impurities from being directly fed into the liquid distributor, thus avoiding the risk of clogging the outlet during operation. Furthermore, the combined internal and external design of the filtration structure facilitates the auxiliary collection of filtered impurities throughout the distillation column, making subsequent impurity cleaning operations more convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal semi-sectional structure of the primary filter of this utility model;

[0015] Figure 3 This is a schematic diagram of the separation structure of the first filter screen and the ring plate of this utility model;

[0016] Figure 4This is a top view of the central rotating shaft structure of this utility model.

[0017] In the diagram: 1. Distillation column body; 2. Primary filter; 3. Inlet pipe body; 4. Front flare; 5. Sealing plug; 6. Central rotating shaft; 7. First filter screen; 8. Second filter screen; 9. Ring plate; 10. Vertical clamping plate; 11. Protrusion; 12. Pressure plate; 13. Threaded clamping joint; 14. Diagonal support rod; 15. First bend; 16. Reboiler; 17. Second bend; 18. Condenser; 19. Reflux tank. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution:

[0020] A distillation column for concentrating krypton-xenon liquid in liquid oxygen includes a distillation column body 1. A primary filter 2 is connected to the upper left side of the distillation column body 1. An inlet body 3 is connected to the side of the primary filter 2 away from the distillation column body 1. The front end of the primary filter 2 is integrally formed with a front flared end 4. A sealing plug 5 is threadedly connected inside the front flared end 4. A central rotating shaft 6 extending into the interior of the primary filter 2 is fixedly connected to the rear of the sealing plug 5. A first filter screen 7 is arranged adjacent to the left side of the central rotating shaft 6, and a second filter screen 8 is arranged adjacent to the right side of the central rotating shaft 6. The first filter screen 7, the central rotating shaft 6, and the second filter screen 8 are fixedly connected together by several inclined support rods 14. Two ring plates 9 are respectively abutted at the upper and lower ends of the outer surface of the second filter screen 8. The upper and lower ring plates 9 are fixedly connected together by vertical clamping plates 10.

[0021] like Figure 1 As shown, a first bend 15 is connected to the lower left side of the distillation column 1, and a reboiler 16 is connected to the vertical end of the first bend 15. This structure allows the entire distillation column to heat the liquid oxygen fed into the distillation column 1 through the reboiler 16. A second bend 17 is connected to the top of the distillation column 1, and a condenser 18 is connected to the vertical end of the second bend 17. A reflux tank 19 is connected below the condenser 18. This structure allows the entire distillation column to first use the condenser 18 to cool the vaporized krypton-xenon liquid, and then use the reflux tank 19 to collect the krypton-xenon liquid.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the interior of the front flare 4 is connected to the interior of the primary filter 2. The cavity reserved inside the primary filter 2 and the irregular structure formed by the two ring plates 9 are matched in size. The top two sides of the ring plate 9 located at the lower part of the interior of the primary filter 2 are respectively fixedly connected to the protrusions 11. The protrusions 11 are hemispherical in shape. After the sealing plate 5 is rotated and separated from the front flare 4, the first filter screen 7 and the second filter screen 8 can be pulled outward from between the upper and lower ring plates 9. The two protrusions 11 are mainly used by the operator to facilitate the pulling of the ring plate 9, so that the ring plate 9 that has collected impurities can be quickly pulled out and cleaned.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first filter screen 7 and the second filter screen 8 are respectively inserted into the gaps formed by the upper and lower ring plates 9. The rear end of the central rotating shaft 6 is fixedly connected to the pressure plate 12, and the rear end of the pressure plate 12 is fixedly connected to the threaded clamping connector 13. The middle position of the vertical clamping plate 10 is provided with a threaded groove structure that is threadedly connected to the threaded clamping connector 13. The inclined support rods 14 are arranged in groups of two, with a total of three groups. The screen surface of the first filter screen 7 is directly opposite the liquid inlet of the primary filter 2. The first filter screen 7 and the second filter screen 8 are arranged in parallel. The parallel arrangement of the first filter screen 7 and the second filter screen 8 will facilitate the multi-stage filtration of liquid oxygen in the entire distillation column.

[0024] Workflow: Between distillation columns that require concentrated krypton-xenon liquid in the liquid oxygen, the liquid oxygen delivery pipeline can be quickly connected through the inlet port 3. Simultaneously, when assembling the filter structure, first align the interior of the primary filter 2 and insert the irregular structure consisting of two ring plates 9 and a vertical clamping plate 10. Then, push the first filter screen 7 and the second filter screen 8 into the irregular structure from front to back, so that the threaded clamping connector 13 is threadedly connected to the vertical clamping plate 10. This allows the pressure plate 12 to press against the ring plates 9 from front to back. At this time, the sealing plug 5 will engage with the front flare 4 and be spirally connected to it, facilitating the sealing of the front flare 4 at the front end of the primary filter 2. This also allows the filter structure to be assembled. When starting the entire device, liquid oxygen is carried out from the air separation unit and delivered into the inlet port body through the delivery pipeline. Inside the distillation column 3, liquid oxygen is pre-filtered into the primary filter 2. Under the protection of the upper and lower ring plates 9, the liquid oxygen is first filtered by the first filter screen 7 and then filtered a second time by the second filter screen 8. The filtered impurities fall into the lower ring plate 9, allowing the liquid oxygen to undergo multi-stage filtration before distillation. This prevents the liquid oxygen from being directly sent into the liquid distributor, which could easily cause outlet blockage. Then, the filtered liquid oxygen is sent to the bottom of the distillation column 1 and boiled in the reboiler 16 to achieve heating and vaporization. Next, the krypton-xenon vapor is sent through the second bend 17 into the condenser 18 for cooling. Finally, the cooled concentrated krypton-xenon liquid is returned to the reflux tank 19 for collection, thus completing the entire distillation and concentration operation of the distillation column.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distillation column for concentrating krypton-xenon liquid in liquid oxygen, comprising a distillation column body (1), characterized in that: A primary filter (2) is connected to the upper left side of the distillation column (1). An inlet body (3) is connected to the side of the primary filter (2) away from the distillation column (1). The front end of the primary filter (2) is integrally formed with a front flared end (4). A sealing plug (5) is threaded inside the front flared end (4). A central rotating shaft (6) extending into the primary filter (2) is fixedly connected to the rear of the sealing plug (5). A first filter screen (7) is provided adjacent to the left side of the central rotating shaft (6). A second filter screen (8) is provided adjacent to the right side of the central rotating shaft (6). The first filter screen (7), the central rotating shaft (6), and the second filter screen (8) are fixedly connected together by several inclined support rods (14). Two ring plates (9) are respectively abutted at the upper and lower ends of the outer surface of the second filter screen (8). The upper and lower ring plates (9) are fixedly connected together by a vertical clamping plate (10).

2. The distillation column for concentrating krypton-xenon solution in liquid oxygen according to claim 1, characterized in that: The distillation column (1) is connected to a first bend (15) at the lower left side, and a reboiler (16) is connected to the vertical end of the first bend (15).

3. The distillation column for concentrating krypton-xenon solution in liquid oxygen according to claim 1, characterized in that: The top of the distillation column (1) is connected to a second bend (17), the vertical end of the second bend (17) is connected to a condenser (18), and the bottom of the condenser (18) is connected to a reflux tank (19).

4. The distillation column for concentrating krypton-xenon solution in liquid oxygen according to claim 1, characterized in that: The interior of the front flare (4) is connected to the interior of the primary filter (2). The cavity reserved inside the primary filter (2) and the irregular structure formed by the two ring plates (9) are matched in size. The top two sides of the ring plate (9) located at the lower part of the interior of the primary filter (2) are respectively fixedly connected with protrusions (11), and the protrusions (11) are hemispherical in shape.

5. A distillation column for concentrating krypton-xenon solution in liquid oxygen according to claim 1, characterized in that: The first filter screen (7) and the second filter screen (8) are respectively inserted into the gap formed by the upper and lower ring plates (9). The rear end of the central rotating shaft (6) is fixedly connected to the pressure plate (12). The rear end of the pressure plate (12) is fixedly connected to the threaded clamping connector (13). The middle position of the vertical clamping plate (10) is provided with a threaded groove structure that is threadedly connected to the threaded clamping connector (13). The inclined support rods (14) are arranged in groups of two, with a total of three groups. The screen surface of the first filter screen (7) is directly opposite the liquid inlet of the primary filter (2). The first filter screen (7) and the second filter screen (8) are arranged in parallel.

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