High-purity argon gas preparation equipment based on three-stage method

Abstract

The utility model discloses a kind of preparation high-purity argon equipment based on three-stage method, including two first adsorption towers, second adsorption tower and catalytic tower, the top of two first adsorption towers is equipped with first gas pipe with intercommunication, and one end of two first gas pipe is commonly equipped with gas collection box. The utility model is equipped with two first adsorption towers and two sealing plates, motor works through connecting rod and drives connection frame to move left and right, and connection frame moves left and right through two cross bars to make two sealing plates respectively and two separate frames alternately adhere, and by this way, it can be alternately transported to left and right two first adsorption towers with argon gas for pretreatment and impurity removal, so that the other first adsorption tower can be regenerated while one of the first adsorption tower is pretreated, so that the adsorption device can realize the continuous operation of adsorption and regeneration, the whole process avoids the overall operation of equipment interruption, so as to match the supply demand of high-purity argon continuous, large-scale supply of industrial production.

Description

Technical Field

[0001] This utility model relates to an argon production device, and more particularly to a device for preparing high-purity argon based on a three-stage method. Background Technology

[0002] In fields such as steel smelting, semiconductor manufacturing, photovoltaic crystal pulling, and high-end scientific research, high-purity argon is a crucial inert protective gas. Its purity and stability directly affect the quality of the final product and the safety of the production process. Currently, the mainstream industrial process for large-scale production of high-purity argon involves further purification of crude argon extracted from air separation units. Among these processes, the "three-stage method" (typically including a pretreatment stage, a deep purification stage, and a fine filtration stage) is widely used due to its mature technology and excellent purification effect.

[0003] However, the pretreatment section of existing three-stage argon preparation equipment mostly uses a fixed-bed adsorption device. This structure has inherent limitations: when the adsorbent reaches saturation, the system must be shut down for replacement or regeneration, preventing continuous operation of the adsorption device. This problem directly causes an overall equipment downtime, making it difficult to meet the industrial demand for continuous and large-scale supply of high-purity argon. Utility Model Content

[0004] The purpose of this invention is to provide a device for preparing high-purity argon gas based on a three-stage method. This invention can meet the industrial production demand for continuous and large-scale supply of high-purity argon gas.

[0005] The technical solution of this utility model is: a high-purity argon gas preparation device based on a three-stage method, comprising: two first adsorption towers, a second adsorption tower and a catalytic tower, the top of each of the two first adsorption towers is connected to a first gas delivery pipe, one end of each of the two first gas delivery pipes is connected to a gas collection box, the inner wall of the gas collection box is fixed with two partition frames, and one side of the gas collection box is connected to an inlet pipe.

[0006] An adjusting component includes a first motor, the output end of which is fixedly provided with a rotating shaft, the bottom end of which is fixedly provided with a connecting rod, the bottom end of which is fixedly provided with a connecting shaft, a connecting frame slidingly provided on the outer wall of the connecting shaft, and crossbars fixedly provided on both sides of the connecting frame. A sealing plate is fixedly provided on the opposite ends of the two crossbars, and one side of the sealing plate is in contact with the partition frame on the same side.

[0007] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the diameter of the connecting shaft is adapted to the width of the inner wall of the connecting frame, and the length of the connecting shaft is longer than the height of the connecting frame.

[0008] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the adjustment component further includes two sealing strips, with the opposite sides of the two sealing strips respectively fixedly connected to the opposite sides of the two sealing plates.

[0009] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the regulating component further includes two connecting columns. The top ends of the two connecting columns are fixedly connected to the bottom ends of the two sealing plates, and the bottom ends of the two connecting columns are slidably connected to the inner bottom end of the gas collecting box.

[0010] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the two ends of the other side of the gas collecting box are respectively fixedly connected to the outer walls of the two first adsorption towers.

[0011] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the bottom ends of the outer walls of the two first adsorption towers are connected to second gas supply pipes, one end of each of the two second gas supply pipes is connected to the top end of the second adsorption tower, the bottom end of the outer wall of the second adsorption tower is connected to a third gas supply pipe, one end of the third gas supply pipe is connected to the top end of the catalytic tower, and the outer wall of the catalytic tower is connected to an exhaust pipe.

[0012] The aforementioned equipment for preparing high-purity argon gas based on the three-stage method also includes a stirring component. The stirring component includes a second motor fixed at the top of the first adsorption tower. The output end of the second motor is fixedly provided with a stirring shaft, and the outer wall of the stirring shaft is fixedly provided with two sets of stirring rods.

[0013] In the aforementioned equipment for preparing high-purity argon gas based on the three-stage method, the outer wall of the stirring rod does not contact the inner wall of the first adsorption tower.

[0014] Compared with the prior art, this utility model sets up two first adsorption towers and two sealing plates. The motor drives the connecting frame to move left and right through the connecting rod. The left and right movement of the connecting frame causes the two sealing plates to alternately fit with the two partition frames through two crossbars. In this way, argon gas can be alternately delivered to the left and right first adsorption towers for pretreatment and impurity removal. This allows the pretreatment of one first adsorption tower to be carried out while the other first adsorption tower is being regenerated. This enables the adsorption device to achieve continuous operation of adsorption and regeneration. The whole process avoids interruption of the overall operation of the equipment, thus meeting the industrial production demand for continuous and large-scale supply of high-purity argon gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the adjusting component structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the internal connection structure of the gas collection box of this utility model;

[0018] Figure 4 This is a schematic diagram of the stirring component of this utility model.

[0019] The labels in the attached diagram are as follows: 11, First adsorption tower; 12, First gas supply pipe; 13, Gas collection box; 131, Separator frame; 132, Inlet pipe; 14, Second gas supply pipe; 15, Second adsorption tower; 16, Third gas supply pipe; 17, Catalytic tower; 171, Exhaust pipe; 21, First motor; 22, Rotating shaft; 23, Connecting rod; 24, Connecting shaft; 25, Connecting frame; 26, Crossbar; 27, Sealing plate; 28, Sealing strip; 29, Connecting column; 31, Second motor; 32, Stirring shaft; 33, Stirring rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example. A three-stage method for preparing high-purity argon gas is described below. Figure 1-4 As shown, it includes: two first adsorption towers 11, a second adsorption tower 15 and a catalytic tower 17. The top of each of the two first adsorption towers 11 is connected to a first gas supply pipe 12. One end of each of the two first gas supply pipes 12 is connected to a gas collection box 13. The inner wall of the gas collection box 13 is fixed with two partition frames 131. One side of the gas collection box 13 is connected to an inlet pipe 132.

[0022] The first adsorption tower 11 is filled with an adsorbent that has a strong adsorption capacity for oxygen, carbon dioxide, and water, thereby achieving a first-stage pretreatment and impurity removal of argon. The second adsorption tower 15 is filled with an adsorbent that has a strong adsorption capacity for nitrogen, thereby achieving a second-stage deep purification of argon. The catalytic tower 17 is filled with a specific catalyst, activated carbon, and alkaline adsorbent. Under the action of the catalyst, the activated carbon reacts with oxygen to convert oxygen into carbon dioxide, thereby removing trace amounts of oxygen. The carbon dioxide is then adsorbed and removed by the alkaline adsorbent, thus achieving a three-stage fine filtration of argon, ultimately obtaining high-purity argon.

[0023] The adjustment component includes a first motor 21. A rotating shaft 22 is fixedly provided at the output end of the first motor 21. A connecting rod 23 is fixedly provided at the bottom end of the rotating shaft 22. A connecting shaft 24 is fixedly provided at the bottom end of the connecting rod 23. A connecting frame 25 is slidably provided on the outer wall of the connecting shaft 24. A crossbar 26 is fixedly provided on both sides of the connecting frame 25. A sealing plate 27 is fixedly provided at the opposite ends of the two crossbars 26. One side of one of the sealing plates 27 is in contact with the partition frame 131 on the same side.

[0024] The first motor 21 is a Y80M1-2 model, which is used to provide the driving force required for the two sealing plates 27 to move left and right alternately. The bottom end of the first motor 21 is fixedly set at the top of the air collection box 13. The outer wall of the rotating shaft 22 passes through the air collection box 13 and rotates with the air collection box 13. The distance between the two sealing plates 27 is greater than the distance between the opposite sides of the two partition frames 131. When the connecting rod 23 rotates to 180 degrees, the other sealing plate 27 is in contact with the other partition frame 131. The length and width of the sealing plate 27 are greater than the length and width of the inner wall of the partition frame 131 and smaller than the length and width of the partition frame 131.

[0025] The diameter of the connecting shaft 24 is adapted to the width of the inner wall of the connecting frame 25, and the length of the connecting shaft 24 is longer than the height of the connecting frame 25.

[0026] The adjusting component also includes two sealing strips 28, with the opposite sides of the two sealing strips 28 respectively fixedly connected to the opposite sides of the two sealing plates 27;

[0027] The sealing strip 28 is shaped like a square and is used to increase the sealing between the sealing plate 27 and the partition frame 131. The two partition frames 131 are provided with sealing grooves that are compatible with the sealing strip 28 on opposite sides.

[0028] The adjusting component also includes two connecting posts 29, the top ends of the two connecting posts 29 are fixedly connected to the bottom ends of the two sealing plates 27 respectively, and the bottom ends of the two connecting posts 29 are slidably connected to the inner bottom end of the air collection box 13 respectively.

[0029] The connecting column 29 is used to limit the movement of the sealing plate 27, thereby improving the overall stability of the sealing plate 27 during left and right movement. The inner bottom of the air collection box 13 has two limiting grooves that are adapted to the bottom of the connecting column 29.

[0030] The two ends of the other side of the gas collection box 13 are fixedly connected to the outer walls of the two first adsorption towers 11, respectively.

[0031] The bottom of the outer wall of each of the two first adsorption towers 11 is connected to a second gas supply pipe 14. One end of each of the two second gas supply pipes 14 is connected to the top of the second adsorption tower 15. The bottom of the outer wall of the second adsorption tower 15 is connected to a third gas supply pipe 16. One end of the third gas supply pipe 16 is connected to the top of the catalytic tower 17. The outer wall of the catalytic tower 17 is connected to an exhaust pipe 171.

[0032] Control valves are fixedly installed on the outer walls of the second gas pipe 14 and the third gas pipe 16.

[0033] Working principle: Crude argon gas is introduced into the gas collection box 13 through the inlet pipe 132. At this time, the sealing plate 27 on the right side is in contact with the partition frame 131 on the same side, while the sealing plate 27 on the left side is not in contact with the partition frame 131 on the same side. The argon gas enters the first adsorption tower 11 on the same side through the first gas supply pipe 12 on the left side. It undergoes a pretreatment and impurity removal process in the first adsorption tower 11. The pretreated argon gas then enters the second adsorption tower 15 through the second gas supply pipe 14. It undergoes a second stage of deep purification in the second adsorption tower 15. The purified argon gas then enters the catalytic tower 17. It undergoes a third stage of fine filtration in the catalytic tower 17, finally obtaining high-purity argon gas, which is discharged through the exhaust pipe 171. When the first adsorption tower 11 reaches saturation, the motor 21 is turned on. The motor 21 drives the rotating shaft 22 to rotate, which in turn drives the connecting rod 23 to rotate. During the process of reaching 180 degrees, the connecting rod 23 drives the connecting frame 25 to move to the right through the connecting shaft 24. The movement of the connecting frame 25 to the right drives the two crossbars 26 to move, so that the sealing plate 27 on the left side is in contact with the partition frame 131 on the same side, while the sealing plate 27 on the right side is not in contact with the partition frame 131 on the same side. At this time, the argon gas in the gas collecting box 13 enters the first adsorption tower 11 on the same side through the first gas supply pipe 12 on the right side for pretreatment and impurity removal. In this way, argon gas can be alternately supplied to the two first adsorption towers 11 on the left and right sides for pretreatment and impurity removal. This allows the other first adsorption tower 11 to be regenerated while one first adsorption tower 11 is pretreatment, so that the adsorption device can achieve continuous operation of adsorption and regeneration. The whole process avoids interruption of the overall operation of the equipment, thereby matching the industrial production demand for continuous and large-scale supply of high-purity argon gas.

[0034] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, further includes:

[0035] The stirring component includes a second motor 31 fixed at the top of the first adsorption tower 11, an agitation shaft 32 fixedly provided at the output end of the second motor 31, and two sets of agitation rods 33 fixedly provided on the outer wall of the agitation shaft 32.

[0036] The second motor 31 is the same model as the first motor 21. The bottom end of the second motor 31 is fixedly installed in the middle of the top of the first adsorption tower 11. The outer wall of the stirring shaft 32 penetrates the first adsorption tower 11 and rotates with the first adsorption tower 11.

[0037] The outer wall of the stirring rod 33 does not contact the inner wall of the first adsorption tower 11.

[0038] Working principle: After argon gas enters the first adsorption tower 11, the second motor 31 is turned on. The second motor 31 drives the stirring shaft 32 to rotate, and the stirring shaft 32 drives the stirring rod 33 to rotate. In this way, the argon gas flow can be disturbed, thereby changing its flow direction and speed, so that the gas is more evenly distributed in the entire first adsorption tower 11. This increases the contact area between impurities such as oxygen, carbon dioxide and water in the argon gas and the adsorbent, thereby improving the adsorption efficiency.

Claims

1. A device for preparing high-purity argon gas based on a three-stage method, characterized in that, include: Two first adsorption towers (11), a second adsorption tower (15), and a catalytic tower (17). The top of each of the two first adsorption towers (11) is connected to a first gas supply pipe (12). One end of each of the two first gas supply pipes (12) is connected to a gas collection box (13). The inner wall of the gas collection box (13) is fixed with two partition frames (131). One side of the gas collection box (13) is connected to an inlet pipe (132). The adjustment component includes a first motor (21), the output end of the first motor (21) is fixedly provided with a rotating shaft (22), the bottom end of the rotating shaft (22) is fixedly provided with a connecting rod (23), the bottom end of the connecting rod (23) is fixedly provided with a connecting shaft (24), the outer wall of the connecting shaft (24) is slidably provided with a connecting frame (25), both sides of the connecting frame (25) are fixedly provided with crossbars (26), and the opposite ends of the two crossbars (26) are fixedly provided with sealing plates (27), one side of one of the sealing plates (27) is in contact with the partition frame (131) on the same side.

2. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: The diameter of the connecting shaft (24) is adapted to the width of the inner wall of the connecting frame (25), and the length of the connecting shaft (24) is longer than the height of the connecting frame (25).

3. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: The adjusting component also includes two sealing strips (28), with the opposite sides of the two sealing strips (28) respectively fixedly connected to the opposite sides of the two sealing plates (27).

4. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: The adjusting component also includes two connecting columns (29), the top ends of the two connecting columns (29) are fixedly connected to the bottom ends of the two sealing plates (27) respectively, and the bottom ends of the two connecting columns (29) are slidably connected to the inner bottom end of the air collection box (13).

5. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: The two ends of the gas collection box (13) on the other side are fixedly connected to the outer walls of the two first adsorption towers (11).

6. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: The bottom ends of the outer walls of the two first adsorption towers (11) are connected to a second gas supply pipe (14). One end of the two second gas supply pipes (14) is connected to the top end of the second adsorption tower (15). The bottom end of the outer wall of the second adsorption tower (15) is connected to a third gas supply pipe (16). One end of the third gas supply pipe (16) is connected to the top end of the catalytic tower (17). The outer wall of the catalytic tower (17) is connected to an exhaust pipe (171).

7. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 1, characterized in that: It also includes a stirring component, which includes a second motor (31) fixed at the top of the first adsorption tower (11), and a stirring shaft (32) fixedly provided at the output end of the second motor (31), and two sets of stirring rods (33) fixedly provided on the outer wall of the stirring shaft (32).

8. The equipment for preparing high-purity argon gas based on the three-stage method according to claim 7, characterized in that: The outer wall of the stirring rod (33) does not contact the inner wall of the first adsorption tower (11).

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