Crude argon rectification system

Abstract

The utility model provides a crude argon rectification system, which comprises a crude argon tower provided with a crude argon reaction cavity, a first material inlet, an argon outlet and a reflux inlet, the first material inlet is used for conveying materials, and the crude argon tower can separate argon components and oxygen components in the materials; the pure argon tower is provided with a pure argon reaction cavity, an argon inlet and a liquid argon outlet, the argon inlet and the liquid argon outlet are both communicated with the pure argon reaction cavity, the argon inlet is communicated with the argon outlet, the pure argon tower can separate an argon component and a nitrogen component in a material, and the argon component is discharged from the liquid argon outlet; one end of the collecting pipeline is communicated with the liquid argon outlet, the other end of the collecting pipeline is used for being communicated with a storage tank, and the storage tank is used for storing argon components discharged from the liquid argon outlet; one end of the first backflow pipeline is communicated with the collecting pipeline, and the other end of the first backflow pipeline is communicated with the backflow opening. According to the technical scheme, the problem that in the prior art, the loss rate of the argon component is high can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of crude argon distillation systems, and more specifically, to a crude argon distillation system. Background Technology

[0002] Argon is a rare gas, comprising 0.93% of the atmosphere. It is characterized by its high density, low thermal conductivity, and chemical inertness. High-purity argon is primarily used in electron tubes, special light bulbs, and vacuum technology, and is commonly used as a protective gas in metal smelting, cutting, welding, and the electronics industry. However, in current technologies, substandard argon products are often released on-site during argon extraction, resulting in product waste. Utility Model Content

[0003] This invention provides a crude argon distillation system to solve the problem of high argon component loss rate in the prior art.

[0004] This invention provides a crude argon distillation system, comprising: a crude argon column having a crude argon reaction chamber, a first material inlet, an argon outlet, and a reflux port, wherein both the first material inlet and the reflux port are connected to the crude argon reaction chamber, the first material inlet being used to transport the material, and the crude argon column being able to separate argon and oxygen components from the material; a refined argon column having a refined argon reaction chamber, an argon inlet, and a liquid argon outlet, wherein both the argon inlet and the liquid argon outlet are connected to the refined argon reaction chamber, and the argon inlet and the argon outlet being connected, and the refined argon column being able to separate argon and nitrogen components from the material, the argon component being discharged from the liquid argon outlet; a collection pipeline having one end connected to the liquid argon outlet and the other end connected to a storage tank for storing the argon component discharged from the liquid argon outlet; and a first reflux pipeline having one end connected to the collection pipeline and the other end connected to the reflux port.

[0005] Furthermore, the crude argon column has a second material inlet, which is connected to the crude argon reaction chamber. The crude argon distillation system also includes: a buffer tank, which is connected to the second material inlet and is used to store materials; and an upper column, which has an upper reaction chamber and a third material outlet that are connected to each other, and the third material outlet is connected to the first material inlet.

[0006] Furthermore, the crude argon tower has a first heat exchange chamber, which is independent of the crude argon reaction chamber and is located above the crude argon reaction chamber. A first heat exchanger is installed in the first heat exchange chamber, and the first heat exchanger has a first heat exchange inlet and a first heat exchange outlet. The crude argon tower also includes: a first heat exchange inlet pipe, one end of which is connected to the crude argon reaction chamber and the other end of which is connected to the first heat exchange inlet; a first heat exchange outlet pipe, one end of which is connected to the first heat exchange outlet and the other end of which has an argon gas outlet. The first heat exchange chamber and the first heat exchanger work together to cool the material in the crude argon reaction chamber to condense the oxygen component in the material into liquid oxygen; and a second reflux pipe, one end of which is connected to the first heat exchange outlet pipe and the other end of which is connected to the crude argon reaction chamber.

[0007] Furthermore, the bottom of the crude argon column also has a liquid oxygen outlet, which is connected to the crude argon reaction chamber. The crude argon distillation system also includes: a first connecting pipeline, one end of which is connected to the liquid oxygen outlet, and the other end of which is connected to the upper reaction chamber.

[0008] Furthermore, the crude argon distillation system also includes: a lower column, which has a lower reaction chamber; and a second connecting pipeline, one end of which is connected to the lower column and the other end of which is connected to the first heat exchange chamber. The lower column transports liquid oxygen through the second connecting pipeline to cool the material in the first heat exchanger.

[0009] Furthermore, the argon refining tower has a second heat exchange chamber, which is independent of the argon refining reaction chamber and is located above the argon refining reaction chamber. A second heat exchanger is installed inside the second heat exchange chamber, and the second heat exchanger has a second heat exchange inlet and a second heat exchange outlet. The argon refining tower also includes: a second heat exchange inlet pipe, one end of which is connected to the argon refining reaction chamber, and the other end of which is connected to the second heat exchange inlet; a second heat exchange outlet pipe, one end of which is connected to the second heat exchange outlet, and the other end of which is connected to the argon refining reaction chamber. The second heat exchange chamber and the second heat exchanger work together to cool the material in the argon refining reaction chamber, thereby condensing the argon component in the material into liquid argon; and an exhaust pipe, one end of which is connected to the second heat exchange outlet pipe, and the other end of which is connected to a sewage discharge pipe. The exhaust pipe is used to discharge nitrogen gas from the material.

[0010] Furthermore, a third heat exchanger is installed at the bottom of the argon reaction chamber, and the liquid argon outlet is located at the bottom of the argon reaction chamber. The third heat exchanger is used to heat the material in the argon reaction chamber.

[0011] Furthermore, the lower tower has an outlet, and the third heat exchanger has a third heat exchange inlet. The outlet is connected to the third heat exchange inlet, and the lower tower provides high-temperature gas to the third heat exchanger.

[0012] Furthermore, the third heat exchanger has a third heat exchange outlet, and the argon tower also includes a third connecting pipeline. One end of the third connecting pipeline is connected to the third heat exchange outlet, and the other end of the third connecting pipeline is connected to the second heat exchange chamber. A throttling valve is installed on the third connecting pipeline.

[0013] Furthermore, the first connecting pipeline is equipped with multiple first pump bodies, and the crude argon distillation system also includes: a fourth connecting pipeline, one end of which is connected to a buffer tank, the other end of which is connected to a second material inlet, and a second pump body is installed on the fourth connecting pipeline.

[0014] Applying the technical solution of this utility model, the material first enters the crude argon tower through the first material inlet to react and remove the oxygen component. The material after removing the oxygen component enters the refined argon tower through the argon outlet and argon inlet to react again and remove the nitrogen component. The argon component is discharged from the liquid argon outlet and recovered to the storage tank through the collection pipeline. At this point, the argon component discharged from the collection pipeline is the argon product. Furthermore, the unqualified argon product can be returned to the crude argon reaction chamber through the first reflux pipeline for further reaction. Finally, the qualified argon product is separated through the collection pipeline. This setup avoids the waste of argon components, improves the purification rate of argon components, and also helps to reduce production costs and improve economic efficiency. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the crude argon distillation system provided by this utility model is shown.

[0017] The above figures include the following reference numerals:

[0018] 10. Crude argon column;

[0019] 11. Crude argon reaction chamber;

[0020] 12. First heat exchange chamber;

[0021] 13. First heat exchanger;

[0022] 14. First heat exchanger inlet pipe;

[0023] 15. First heat exchanger outlet tube;

[0024] 16. Second return pipeline;

[0025] 17. First connecting pipeline; 171. First pump body;

[0026] 18. Fourth connecting pipeline; 181. Second pump body;

[0027] 20. Argon Refining Tower;

[0028] 21. Argon reaction chamber;

[0029] 22. Second heat exchange chamber;

[0030] 23. Second heat exchanger;

[0031] 24. Second heat exchanger inlet pipe;

[0032] 25. Second heat exchanger outlet tube;

[0033] 26. Exhaust pipe;

[0034] 27. Third heat exchanger;

[0035] 28. Third connecting pipeline;

[0036] 29. Throttling valve;

[0037] 30. Collection pipeline;

[0038] 40. First return flow line;

[0039] 50. Buffer tank;

[0040] 60. Up the tower; 61. Up the reaction chamber;

[0041] 70. Lower the tower; 71. Lower the reaction chamber;

[0042] 80. Second connecting pipeline;

[0043] 91. First pipeline; 92. Second pipeline; 93. Third pipeline; 94. Fourth pipeline. Detailed Implementation

[0044] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0045] like Figure 1As shown, this embodiment of the present invention provides a crude argon distillation system, which includes a crude argon column 10, a refined argon column 20, a collection pipeline 30, and a first reflux pipeline 40. The crude argon column 10 has a crude argon reaction chamber 11, a first material inlet, an argon outlet, and a reflux port. Both the first material inlet and the reflux port are connected to the crude argon reaction chamber 11. The first material inlet is used to transport the material. The crude argon column 10 can separate argon and oxygen components from the material. The refined argon column 20 has a refined argon reaction chamber 21, an argon inlet, and a liquid argon outlet. Both the argon inlet and the liquid argon outlet are connected to the refined argon reaction chamber 21. The argon inlet and the argon outlet are also connected. The refined argon column 20 can separate argon and nitrogen components from the material. The argon component is discharged from the liquid argon outlet. One end of the collection pipeline 30 is connected to the liquid argon outlet, and the other end of the collection pipeline 30 is connected to a storage tank. The storage tank is used to store the argon component discharged from the liquid argon outlet. One end of the first return pipeline 40 is connected to the collection pipeline 30, and the other end of the first return pipeline 40 is connected to the return port. In this application, the material is a crude argon source.

[0046] Applying the technical solution of this application, the material first enters the crude argon tower 10 through the first material inlet to react and remove the oxygen component. The material after removing the oxygen component enters the refined argon tower 20 through the argon outlet and argon inlet to react again and remove the nitrogen component. The argon component is discharged from the liquid argon outlet and recovered to the storage tank through the collection pipeline 30. At this time, the argon component discharged from the collection pipeline 30 is the argon product. Furthermore, the unqualified argon product can be returned to the crude argon reaction chamber 11 through the first reflux pipeline 40 to react again. Finally, the qualified argon product is separated through the collection pipeline 30. This setup can avoid the waste of argon components, improve the purification rate of argon components, and also help reduce production costs and improve economic efficiency.

[0047] In this application, the argon refinement tower 20 is positioned at a high level. During the initial start-up phase, unqualified argon products are returned from the argon refinement tower 20 to the crude argon tower 10 via the first reflux pipeline 40, thus avoiding product waste caused by the on-site discharge of unqualified argon products.

[0048] Specifically, in this application, the argon inlet and the argon outlet are connected by a first pipeline 91.

[0049] Furthermore, the crude argon column 10 has a second material inlet, which is connected to the crude argon reaction chamber 11. The crude argon distillation system also includes a buffer tank 50 and an upper column 60. The buffer tank 50 is connected to the second material inlet and is used to store materials. The upper column 60 has an upper reaction chamber 61 and a third material outlet, which are connected to the first material inlet.

[0050] In this application, the third material outlet and the first material inlet are connected by a second pipeline 92.

[0051] In existing technologies, some air separation units were not designed with argon extraction devices in mind, resulting in low argon extraction rates during later modifications due to the original design limitations. In this application, through a reasonable design of the crude argon column 10, an external crude argon source is introduced at an appropriate height (i.e., at an appropriate number of trays), reducing the circulation rate of the crude argon column 10 and increasing argon production.

[0052] However, the externally introduced crude argon source is unstable in operation, has a significant impact on the original air separation unit, and is very prone to nitrogen blockage.

[0053] Therefore, as a flow stabilizing structure, the buffer tank 50 can effectively absorb and mitigate the impact of external material supply fluctuations on the crude argon column 10, ensuring the stability of the material flow rate and pressure entering the crude argon column 10, reducing the risk of nitrogen blockage caused by unstable external supply, improving the stability of the crude argon distillation system, and increasing economic benefits.

[0054] When the crude argon source is liquid, a buffer tank 50 can be installed to collect one or more sets of crude liquid argon into the tank. When abnormal fluctuations occur in the upper column 60 or the air separation unit supplying the crude argon source, the operating conditions of the crude argon column 10 can be balanced by adjusting the amount of crude argon source in the buffer tank 50. If the air separation unit supplying the crude argon source suddenly shuts down, without the crude argon buffer tank 50, the operating conditions will fluctuate significantly, potentially affecting product purity. With the crude argon buffer tank 50, the crude liquid argon within it can act as a buffer, gradually and slowly adjusting the air separation operating conditions of the crude argon distillation system back to normal.

[0055] Specifically, the introduced external crude argon source can be either gaseous or liquid. When the crude argon source is gaseous, the original idle crude argon venting channel can be used to cool the room temperature gaseous crude argon source to near its liquefaction temperature.

[0056] The buffer tank 50 can be a vacuum tank, or it can be replaced by a larger cavity, pipeline or tank with better insulation.

[0057] By introducing an external crude argon source into the crude argon tower 10 and combining it with the distillation of the fine argon tower 20, the yield and purity of argon can be effectively improved. Especially when processing raw materials containing high argon components, the system can separate argon more effectively and achieve a higher argon extraction rate.

[0058] Furthermore, the crude argon tower 10 has a first heat exchange chamber 12, which is independent of the crude argon reaction chamber 11. The first heat exchange chamber 12 is located above the crude argon reaction chamber 11. A first heat exchanger 13 is provided in the first heat exchange chamber 12, and the first heat exchanger 13 has a first heat exchange inlet and a first heat exchange outlet.

[0059] The crude argon tower 10 also includes a first heat exchange inlet pipe 14, a first heat exchange outlet pipe 15, and a second reflux pipe 16.

[0060] One end of the first heat exchange inlet pipe 14 is connected to the crude argon reaction chamber 11, and the other end of the first heat exchange inlet pipe 14 is connected to the first heat exchange inlet. One end of the first heat exchange outlet pipe 15 is connected to the first heat exchange outlet, and the other end of the first heat exchange outlet pipe 15 has an argon gas outlet.

[0061] The first heat exchange chamber 12 works in conjunction with the first heat exchanger 13 to cool the material in the crude argon reaction chamber 11, thereby condensing the oxygen component in the material into liquid oxygen. One end of the second reflux pipe 16 is connected to the first heat exchange outlet pipe 15, and the other end of the second reflux pipe 16 is connected to the crude argon reaction chamber 11.

[0062] With this configuration, the material enters the first heat exchanger 13 through the first heat exchange inlet pipe 14 for heat exchange. The oxygen component in the material condenses into liquid oxygen, while the argon component remains gaseous and flows into the refining argon tower 20. The arrangement of the first heat exchange chamber 12 and the first heat exchanger 13 allows for more precise control of the material temperature within the crude argon reaction chamber 11. By condensing the oxygen component in the material into liquid oxygen and returning it to the crude argon reaction chamber 11 through the second reflux pipe 16, the impact of the oxygen component on the purity of the argon is reduced, thereby improving the extraction efficiency and purity of the argon.

[0063] The crude argon column 10 also has a liquid oxygen outlet at its bottom, which is connected to the crude argon reaction chamber 11. The crude argon distillation system also includes a first connecting line 17, one end of which is connected to the liquid oxygen outlet, and the other end of which is connected to the upper reaction chamber 61. The liquid oxygen discharged from the bottom of the crude argon column 10 typically contains a low concentration of argon components. However, direct discharge or storage would not only result in the loss of argon components but also waste of liquid oxygen. By returning this portion of liquid oxygen to the upper reaction chamber 61 through the first connecting line 17, it can re-participate in the distillation process, thereby recycling the argon components in the liquid oxygen, saving resources, reducing production costs, and allowing the returned liquid oxygen to participate in other reactions, thus improving the utilization rate of liquid oxygen.

[0064] Specifically, the crude argon distillation system also includes a lower column 70 and a second connecting pipeline 80. The lower column 70 has a lower reaction chamber 71. One end of the second connecting pipeline 80 is connected to the lower column 70, and the other end is connected to the first heat exchange chamber 12. Liquid oxygen is transported from the lower column 70 through the second connecting pipeline 80 to cool the material in the first heat exchanger 13. This configuration allows the liquid oxygen transported through the lower column 70 to exchange heat with the material in the distillation system, achieving internal energy recycling, reducing system energy loss, and optimizing the energy recovery mechanism of the entire air separation unit.

[0065] Furthermore, the first heat exchange chamber 12 is connected to the upper reaction chamber 61 through the fourth pipeline 94. With this configuration, the liquid oxygen in the first heat exchange chamber 12 is heated to become oxygen and enters the upper reaction chamber 61 through the fourth pipeline 94.

[0066] Furthermore, the argon refining tower 20 has a second heat exchange chamber 22, which is independent of the argon refining reaction chamber 21. The second heat exchange chamber 22 is located above the argon refining reaction chamber 21. A second heat exchanger 23 is provided in the second heat exchange chamber 22, and the second heat exchanger 23 has a second heat exchange inlet and a second heat exchange outlet.

[0067] The argon tower 20 also includes a second heat exchange inlet pipe 24, a second heat exchange outlet pipe 25, and an exhaust pipe 26.

[0068] One end of the second heat exchange inlet pipe 24 is connected to the argon refining reaction chamber 21, and the other end is connected to the second heat exchange inlet. One end of the second heat exchange outlet pipe 25 is connected to the second heat exchange outlet, and the other end is connected to the argon refining reaction chamber 21. The second heat exchange chamber 22 and the second heat exchanger 23 work together to cool the material in the argon refining reaction chamber 21, so as to condense the argon component in the material into liquid argon. One end of the exhaust pipe 26 is connected to the second heat exchange outlet pipe 25, and the other end is connected to the drain pipe. The exhaust pipe 26 is used to discharge nitrogen gas from the material.

[0069] With this configuration, the material enters the second heat exchange chamber 22 through the second heat exchange inlet pipe 24 for heat exchange. The argon component condenses into liquid argon and flows back to the fine argon reaction chamber 21 through the second heat exchange outlet pipe 25. Nitrogen gas is discharged through the exhaust pipe 26. The independent design of the second heat exchange chamber 22 and the second heat exchanger 23 allows for more precise control of the temperature and pressure in the fine argon reaction chamber 21, thereby effectively separating the argon component from the nitrogen component and improving the purity of the argon gas.

[0070] The bottom of the argon refining reaction chamber 21 is equipped with a third heat exchanger 27, and the liquid argon outlet is located at the bottom of the argon refining reaction chamber 21. The third heat exchanger 27 is used to heat the material in the argon refining reaction chamber 21. With this configuration, the third heat exchanger 27 can heat the material in the argon refining reaction chamber 21 into a gas, and the argon components in the argon refining reaction chamber 21 complete distillation during the evaporation and condensation process.

[0071] Specifically, the lower tower 70 has an outlet, and the third heat exchanger 27 has a third heat exchange inlet. The outlet is connected to the third heat exchange inlet, and the lower tower 70 provides high-temperature gas to the third heat exchanger 27.

[0072] With this configuration, the outlet of the lower tower 70 typically discharges high-temperature gases, such as nitrogen-rich gases. In this application, the high-temperature gas supplied by the lower tower 70 to the third heat exchanger 27 is nitrogen-rich gas. These gases often need to be cooled before entering subsequent processing. By directly feeding these high-temperature gases into the third heat exchanger 27, the high-temperature characteristics of the gases can be used to provide a heat source for the materials, achieving internal energy recovery and efficient utilization, reducing the need for additional cooling equipment, and lowering energy consumption and operating costs.

[0073] Furthermore, the third heat exchanger 27 has a third heat exchange outlet, and the argon tower 20 also includes a third connecting pipeline 28. One end of the third connecting pipeline 28 is connected to the third heat exchange outlet, and the other end of the third connecting pipeline 28 is connected to the second heat exchange chamber 22. A throttling valve 29 is installed on the third connecting pipeline 28.

[0074] Because the high-temperature gas discharged from the outlet of the lower tower 70 has a relatively high pressure, after heat exchange with the material in the argon reaction chamber 21, the pressure and temperature decrease. After passing through the throttling valve 29, the temperature decreases again. With this configuration, the nitrogen in the second heat exchange chamber 22 can cool the material in the second heat exchanger 23. This configuration can further improve energy utilization.

[0075] Specifically, in this application, the air outlet and the third heat exchange inlet are connected by a third pipeline 93.

[0076] The first connecting pipeline 17 is equipped with multiple first pump bodies 171. The crude argon distillation system also includes a fourth connecting pipeline 18, one end of which is connected to the buffer tank 50, and the other end of which is connected to the second material inlet. A second pump body 181 is installed on the fourth connecting pipeline 18.

[0077] By installing a first pump 171 on the first connecting pipeline 17, the liquid oxygen circulation capacity from the bottom liquid oxygen outlet of the crude argon column 10 to the main air separation column 60 can be increased, ensuring timely and effective removal of liquid oxygen, preventing excessively high liquid levels at the bottom of the column, thereby avoiding phenomena such as nitrogen blockage, and maintaining the stability and efficiency of the distillation process. Simultaneously, multiple first pumps 171 serve as backups for each other, ensuring the normal operation of the first connecting pipeline 17.

[0078] A second pump body 181 is installed on the fourth connecting pipeline 18 to improve the stability of material supply from the buffer tank 50 to the crude argon tower 10. The second pump body 181 can adjust the material delivery rate according to system requirements to ensure that the crude argon tower 10 can continuously and stably receive material from the buffer tank 50, thereby improving the overall operational stability of the system.

[0079] In this application, the buffer tank 50 adjusts the external delivery volume through a reflux valve or frequency converter to ensure the external crude argon source needs are met.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0082] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0085] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A crude argon distillation system, characterized in that, The crude argon distillation system includes: A crude argon tower (10) has a crude argon reaction chamber (11), a first material inlet, an argon outlet and a reflux port. The first material inlet and the reflux port are both connected to the crude argon reaction chamber (11). The first material inlet is used to transport materials. The crude argon tower (10) can separate argon components and oxygen components in the materials. The argon refiner (20) has an argon refiner reaction chamber (21), an argon inlet and a liquid argon outlet. The argon inlet and the liquid argon outlet are both connected to the argon refiner reaction chamber (21) and the argon inlet and the argon outlet are connected. The argon refiner (20) can separate argon components and nitrogen components in the material. The argon components are discharged from the liquid argon outlet. A collection pipeline (30) is provided, one end of which is connected to the liquid argon outlet, and the other end of which is connected to a storage tank for storing the argon components discharged from the liquid argon outlet. The first return pipe (40) is connected at one end to the collection pipe (30) and at the other end to the return port.

2. The crude argon distillation system according to claim 1, characterized in that, The crude argon column (10) has a second material inlet, which is connected to the crude argon reaction chamber (11). The crude argon distillation system further includes: A buffer tank (50) is connected to the second material inlet, and the buffer tank (50) is used to store materials; The upper column (60) has an upper reaction chamber (61) and a third material outlet that are interconnected with each other, and the third material outlet is connected to the first material inlet.

3. The crude argon distillation system according to claim 2, characterized in that, The crude argon tower (10) has a first heat exchange chamber (12), which is independent of the crude argon reaction chamber (11). The first heat exchange chamber (12) is located above the crude argon reaction chamber (11). A first heat exchanger (13) is provided in the first heat exchange chamber (12). The first heat exchanger (13) has a first heat exchange inlet and a first heat exchange outlet. The crude argon tower (10) further includes: The first heat exchange inlet pipe (14) is connected at one end to the crude argon reaction chamber (11) and at the other end to the first heat exchange inlet. The first heat exchange outlet pipe (15) has one end connected to the first heat exchange outlet and the other end of the first heat exchange outlet pipe (15) has the argon outlet. The first heat exchange chamber (12) cooperates with the first heat exchanger (13) to cool the material in the crude argon reaction chamber (11) so as to condense the oxygen component in the material into liquid oxygen. The second reflux pipe (16) has one end connected to the first heat exchange outlet pipe (15) and the other end connected to the crude argon reaction chamber (11).

4. The crude argon distillation system according to claim 3, characterized in that, The bottom of the crude argon column (10) also has a liquid oxygen outlet, which is connected to the crude argon reaction chamber (11). The crude argon distillation system further includes: The first connecting pipeline (17) has one end connected to the liquid oxygen outlet and the other end connected to the upper reaction chamber (61).

5. The crude argon distillation system according to claim 3, characterized in that, The crude argon distillation system also includes: The lower tower (70) has a lower reaction chamber (71); The second connecting pipeline (80) has one end connected to the lower tower (70) and the other end connected to the first heat exchange chamber (12). The lower tower (70) transports liquid oxygen through the second connecting pipeline (80) to cool the material in the first heat exchanger (13).

6. The crude argon distillation system according to claim 5, characterized in that, The argon refining tower (20) has a second heat exchange chamber (22), which is independent of the argon refining reaction chamber (21). The second heat exchange chamber (22) is located above the argon refining reaction chamber (21). A second heat exchanger (23) is provided in the second heat exchange chamber (22). The second heat exchanger (23) has a second heat exchange inlet and a second heat exchange outlet. The argon refining tower (20) also includes: The second heat exchange inlet pipe (24) has one end connected to the argon reaction chamber (21) and the other end connected to the second heat exchange inlet. The second heat exchange outlet pipe (25) has one end connected to the second heat exchange outlet and the other end connected to the argon reaction chamber (21). The second heat exchange chamber (22) and the second heat exchanger (23) work together to cool the material in the argon reaction chamber (21) so as to condense the argon component in the material into liquid argon. An exhaust pipe (26) is provided, one end of which is connected to the second heat exchange outlet pipe (25), and the other end of which is connected to the sewage pipe. The exhaust pipe (26) is used to discharge nitrogen gas from the material.

7. The crude argon distillation system according to claim 6, characterized in that, A third heat exchanger (27) is provided at the bottom of the argon reaction chamber (21), and the liquid argon outlet is located at the bottom of the argon reaction chamber (21). The third heat exchanger (27) is used to heat the material in the argon reaction chamber (21).

8. The crude argon distillation system according to claim 7, characterized in that, The lower tower (70) has an outlet, and the third heat exchanger (27) has a third heat exchange inlet. The outlet is connected to the third heat exchange inlet, and the lower tower (70) provides high-temperature gas to the third heat exchanger (27).

9. The crude argon distillation system according to claim 8, characterized in that, The third heat exchanger (27) has a third heat exchange outlet, and the argon tower (20) further includes a third connecting pipeline (28). One end of the third connecting pipeline (28) is connected to the third heat exchange outlet, and the other end of the third connecting pipeline (28) is connected to the second heat exchange chamber (22). A throttling valve (29) is provided on the third connecting pipeline (28).

10. The crude argon distillation system according to claim 4, characterized in that, The first connecting pipeline (17) is equipped with a plurality of first pump bodies (171), and the crude argon distillation system further includes: A fourth connecting pipeline (18) is provided, one end of which is connected to the buffer tank (50), and the other end of which is connected to the second material inlet. A second pump body (181) is provided on the fourth connecting pipeline.

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