A rapid conversion device and conversion method for high-purity argon and pure argon production

Abstract

The present invention relates to a rapid conversion device for producing high-purity argon and pure argon, comprising a system control device, an air filter, an air compressor, an air precooling system, a molecular sieve purifier, an air pretreatment device, a heat exchanger, a full distillation air separation system, a crude distillation tower, a distillation tower, a high-purity argon tank, a vehicle charging pump, a first weight sensor, a first pure argon tank, a first medium-pressure argon pump, a second pure argon tank, a second medium-pressure argon pump, a second weight sensor, an intelligent controller, a detector, and a display. The rapid conversion device and conversion method for producing high-purity argon and pure argon fully utilize the production and storage capacity of the system equipment. When pure argon production is needed, the production of liquid argon is increased and the produced pure argon is stored in the first and second pure argon tanks of 10 cubic meters for supply to pure argon users. When high-purity argon production is needed, the production of liquid argon is reduced to the design value. After analysis, when the liquid argon product meets the high-purity argon standard, it is stored in the 20 cubic meter high-purity argon tank.

Description

Technical Field

[0001] The present invention relates to the technical field of conversion devices, in particular to a rapid conversion device for producing high-purity argon and pure argon and a conversion method thereof. Background Art

[0002] High-purity argon is a colorless, odorless, non-toxic gas with extremely inactive chemical properties. It does not form any compounds. Air separation is used to extract argon, that is, liquefied air is distilled to obtain crude argon. The crude argon is extracted and further purified to obtain high-purity argon. Pure argon is a chemical substance. It is a colorless, tasteless, odorless and non-toxic inert gas that dissolves in organic solvents. It is non-flammable and non-toxic. It does not react chemically with other substances at room temperature and is insoluble in liquid metal at high temperatures. Its superiority is more evident when welding non-ferrous metals.

[0003] During the production and processing of high-purity argon and pure argon, an oxygen concentrator is usually required to process liquid argon to ensure the production quality of high-purity argon and pure argon. For example, a liquid argon cooling capacity recovery method and device proposed in Chinese patent CN 103090611 B has the advantages of overcoming technical prejudice, simplifying the process, saving floor space and project investment, eliminating the refrigeration unit, saving steam, and achieving the purpose of energy conservation and emission reduction. The vaporization of liquid argon is continuous, and both liquid argon and water are in continuous operation, which can ensure the normal operation of the entire oxygen concentrator. However, this design does not have the advantage of rapid conversion, resulting in the inability of the pure argon production device to produce high-purity argon and pure argon simultaneously, and it is impossible to produce high-purity argon and pure argon according to the needs of different users. Therefore, high-purity argon and pure argon need to be produced separately. This method not only consumes costs and resources, but also increases manpower and material resources. It is inconvenient to use and cannot meet the factory's use needs, reducing the use efficiency and use effect of the pure argon production device. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a rapid conversion device and a conversion method for the production of high-purity argon and pure argon, which have advantages such as rapid conversion and solve the problem that the existing high-purity argon and pure argon production devices do not have the advantage of rapid conversion, resulting in the inability of the pure argon production device to produce high-purity argon and pure argon at the same time, and the inability to produce high-purity argon and pure argon according to the needs of different users, so that high-purity argon and pure argon need to be produced separately. This method not only consumes costs and resources, but also increases manpower and material resources, is inconvenient to use, cannot meet the factory's use needs, and reduces the use efficiency and use effect of the pure argon production device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rapid conversion device for the production of high-purity argon and pure argon, comprising a system control device, an air filter, an air compressor, an air precooling system, a molecular sieve purifier, an air pretreatment device, a heat exchanger, a full distillation air separation system, a crude distillation tower, a distillation tower, a high-purity argon tank, a car charging pump, a first weight sensor, a first pure argon tank, a first medium-pressure argon pump, a second pure argon tank, a second medium-pressure argon pump, a second weight sensor, an intelligent controller, a detector and a display, wherein the air outlet of the air filter is connected to the air compressor through a first pipeline, the air outlet of the air compressor is connected to the air precooling system through a second pipeline, the air outlet of the air precooling system is connected to the molecular sieve purifier through a third pipeline, and the air outlet of the molecular sieve purifier is connected to the air pretreatment device through a fourth pipeline. The air outlet of the air pretreatment equipment is connected to the heat exchanger through a fifth pipeline, the air outlet of the heat exchanger is connected to the full distillation air separation system through a sixth pipeline, the air outlet of the full distillation air separation system is connected to the crude distillation tower through a seventh pipeline, the air outlet of the crude distillation tower is connected to the distillation tower through an eighth pipeline, the air outlet on the left side of the distillation tower is connected to the high-purity argon tank through a ninth pipeline, the air outlet of the high-purity argon tank is connected to the vehicle charging pump through a tenth pipeline, the air outlet on the upper right side of the distillation tower is connected to the first pure argon tank through an eleventh pipeline, the air outlet of the first pure argon tank is connected to the first medium-pressure argon pump through a twelfth pipeline, the air outlet on the lower right side of the distillation tower is connected to the second pure argon tank through a thirteenth pipeline, and the air outlet of the second pure argon tank is connected to the second medium-pressure argon pump through a fourteenth pipeline.

[0006] Furthermore, the output end of the intelligent controller is electrically connected to the input end of the distillation tower, the output end of the intelligent controller is electrically connected to the input end of the detector, the output end of the detector is electrically connected to the input end of the display, and the output end of the detector is electrically connected to the input end of the distillation tower.

[0007] Furthermore, the first weight sensor is arranged below the high-purity argon tank, and the output end of the first weight sensor is electrically connected to the input end of the display. The first pure argon tank and the second pure argon tank are both located above the second weight sensor, and the output end of the second weight sensor is electrically connected to the input end of the display.

[0008] Furthermore, the air filter, air compressor, air precooling system, molecular sieve purifier, air pretreatment equipment, heat exchanger, full distillation air separation system, crude distillation tower, distillation tower, high-purity argon tank, vehicle charging pump, first weight sensor, first pure argon tank, first medium-pressure argon pump, second pure argon tank, second medium-pressure argon pump, second weight sensor, intelligent controller, detector and display are all electrically connected to the system control equipment.

[0009] Furthermore, a first control valve is fixedly installed on the outside of the seventh pipeline, a second control valve is fixedly installed on the outside of the eighth pipeline, a third control valve is fixedly installed on the outside of the ninth pipeline, a fourth control valve is fixedly installed on the outside of the eleventh pipeline, and a fifth control valve is fixedly installed on the outside of the thirteenth pipeline. The first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all electrically connected to the system control device.

[0010] Furthermore, the system control equipment consists of an alarm, an emergency stop and an operation panel, the air filter consists of a coarse oil filter, a particulate filter, a self-cleaning filter and an air purifier, and the air pretreatment equipment consists of an expander, a booster fan, a cooler and an evaporator.

[0011] Furthermore, the system control device can control the opening or closing of the entire system equipment, operate the system equipment at the same time, and generate alarm prompts. The air pretreatment equipment can expand, pressurize, evaporate and cool the gas. The full distillation air separation system can perform low-temperature distillation on the gas and remove oxygen and nitrogen from the gas. The crude distillation tower and the distillation tower can separate oxygen and argon from the gas.

[0012] Furthermore, the high-purity argon tank can store high-purity argon, and the storage capacity of the high-purity argon tank is 20 cubic meters. The first pure argon tank and the second pure argon tank can store pure argon, and the storage capacity of the first pure argon tank and the second pure argon tank is 10 cubic meters.

[0013] Furthermore, the detector can detect the oxygen content and nitrogen content of high-purity argon in the distillation tower. The standard value of the detector for high-purity argon in the distillation tower is oxygen content ≤ 1.5×10 -6 , nitrogen content 4×10 -6 The detector can detect the oxygen content and nitrogen content of pure argon in the distillation tower. The standard value of the detector for pure argon in the distillation tower is oxygen content ≤ 10×10 -6 、Nitrogen content 50×10 -6 .

[0014] A rapid conversion method for producing high-purity argon and pure argon comprises the following steps:

[0015] 1) The raw air is sent into the inner side of the air filter, and the air filter can filter and purify the harmful substances and particles in the raw air;

[0016] 2) The purified raw air is put into the inner side of the air compressor through the first pipeline, and the air compressor can compress the raw air;

[0017] 3) The compressed raw air will be put into the inner side of the air pre-cooling system through the second pipeline, and the air pre-cooling system can cool and wash the raw air;

[0018] 4) The cooled raw air is then passed through a third pipeline into the inner side of a molecular sieve purifier, which removes moisture and carbon dioxide from the raw air to produce purified dry air;

[0019] 5) Dry air can be put into the inner side of the air pretreatment device through the fourth pipeline, and the air pretreatment device can expand, pressurize, evaporate and cool the dry air;

[0020] 6) The air pre-treatment device can then place the dry air into the inner side of the heat exchanger through the fifth pipeline, and the heat exchanger can cool and reduce the temperature of the dry air;

[0021] 7) The cooled air is fed into the full distillation air separation system through the sixth pipeline. The full distillation air separation system can perform cryogenic distillation on the air to obtain liquid argon, and remove oxygen and nitrogen from the liquid argon.

[0022] 8) Liquid argon can be quantitatively introduced into the crude distillation tower through the seventh pipeline and the first control valve for crude distillation, thereby separating and purifying the liquid argon;

[0023] 9) The crude distilled liquid argon can then be quantitatively introduced into the distillation tower through the eighth pipeline and the second control valve for distillation treatment, thereby performing secondary separation and purification of the liquid argon;

[0024] 10) When pure argon needs to be produced, the intelligent controller can set the design value of the liquid argon output of the distillation tower, and the detector can detect the oxygen and nitrogen content of the pure argon inside the distillation tower. The detected values ​​will be displayed on the top of the display;

[0025] 11) The oxygen and nitrogen contents of pure argon inside the distillation tower are ≤10×10 -6 and 50×10 -6 When the pure argon in the distillation tower is quantified and stored in the first pure argon tank through the eleventh pipeline and the fourth control valve;

[0026] 12) When the pure argon in the first pure argon tank is full, the pure argon in the distillation tower can be quantitatively transferred to the second pure argon tank for storage via the thirteenth pipeline and the fifth control valve;

[0027] 13) The second weight sensor can be used to weigh the amount of pure argon stored in the first pure argon tank and the second pure argon tank. The weighed values ​​will be displayed on the top of the display. The pure argon in the first pure argon tank can be pumped out for use through the twelfth pipeline and the first medium-pressure argon pump. The pure argon in the second pure argon tank can be pumped out for use through the fourteenth pipeline and the second medium-pressure argon pump. They can be used for routine steelmaking and other work.

[0028] 14) When high-purity argon needs to be produced, the intelligent controller can reduce the liquid argon output of the distillation tower to the design value, and the detector can detect the oxygen and nitrogen content of the high-purity argon inside the distillation tower. The detected values ​​will be displayed on the top of the display;

[0029] 15) The oxygen and nitrogen contents of high-purity argon inside the distillation tower are ≤1.5×10 -6 and 4×10 -6 When the high-purity argon in the distillation tower is in the process of being stored, the high-purity argon in the distillation tower can be quantitatively put into the high-purity argon tank through the ninth pipeline and the third control valve for storage;

[0030] 16) The first weight sensor can be used to weigh the amount of high-purity argon stored in the high-purity argon tank. The weighed value will be displayed on the top of the display. The high-purity argon in the high-purity argon tank can be extracted through the tenth pipeline and the filling pump for use in normal arc welding and other work;

[0031] 17) The system control device can control the opening or closing of the entire system equipment, and can also operate the system equipment. When an emergency occurs, it can issue an alarm and stop the operation of the entire system equipment.

[0032] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0033] 1. The rapid conversion device and conversion method for high-purity argon and pure argon production can control the opening or closing of the entire system equipment through the system control device, and can also operate the system equipment and generate alarm prompts. The air filter can filter and purify harmful substances and particles in the raw air, the air compressor can compress the raw air, the air pre-cooling system can cool and wash the raw air, the molecular sieve purifier can remove moisture and carbon dioxide from the raw air to obtain purified dry air, the air pre-treatment equipment can expand, pressurize, evaporate and cool the gas, and the heat exchanger can cool and reduce the temperature of the dry air.

[0034] 2. The rapid conversion device and conversion method for high-purity argon and pure argon production can be used to perform low-temperature distillation on the gas through the full distillation air separation system to remove oxygen and nitrogen from the gas. The gas can be separated into oxygen and argon through the crude distillation tower and the distillation tower. The storage capacity of the high-purity argon tank is 20 cubic meters, which can be used to store high-purity argon. The high-purity argon inside the high-purity argon tank can be extracted for use through the filling pump. The storage capacity of the high-purity argon inside the high-purity argon tank can be weighed and sensed through the first weight sensor. The storage capacity of the first pure argon tank and the second pure argon tank is 10 cubic meters, which can be used to store pure argon. The first medium-pressure argon pump and the second medium-pressure argon pump can be used to pump out the high-purity argon inside the high-purity argon tank. The pump can extract the pure argon inside the first pure argon tank and the second pure argon tank for use. The second weight sensor can be used to weigh and sense the storage amount of high-purity argon inside the first pure argon tank and the second pure argon tank. The intelligent controller can be used to set the design value of the liquid argon output in the distillation tower, and the detection standard values ​​of the oxygen content and nitrogen content of the detector can be set. The detector can be used to detect the oxygen content and nitrogen content of the high-purity argon and pure argon in the distillation tower. The display can display the weighing values ​​of the first weight sensor and the second weight sensor, and the values ​​of the oxygen content and nitrogen content detected by the detector can be displayed.

[0035] 3. The rapid conversion device and conversion method for high-purity argon and pure argon production fully utilize the production and storage tank storage capacity of the system equipment. When pure argon needs to be produced, the output of liquid argon is increased, and the produced pure argon is stored in a first pure argon tank and a second pure argon tank of 10 cubic meters for supply to pure argon users. When high-purity argon needs to be produced, the output of liquid argon is reduced to the design value. When the liquid argon product meets the high-purity argon standard after analysis, it is stored in a 20 cubic meter high-purity argon tank. The overall structure is simple and easy to use, achieving the purpose of rapid conversion between high-purity argon and pure argon. The pure argon production device can produce high-purity argon and pure argon at the same time, and can produce high-purity argon and pure argon according to the needs of different users. High-purity argon and pure argon do not need to be produced separately, saving costs and resource consumption, reducing manpower and material resources, meeting the factory's use needs, and improving the use efficiency and use effect of the pure argon production device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structural steps of the present invention;

[0037] Figure 2 This is a schematic diagram of the high-purity argon tank steps in the structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the first pure argon tank step in the structure of the present invention.

[0039] In the figure: 1. System control equipment; 2. Air filter; 3. Air compressor; 4. Air pre-cooling system; 5. Molecular sieve purifier; 6. Air pretreatment equipment; 7. Heat exchanger; 8. Full distillation air separation system; 9. Crude distillation tower; 10. Distillation tower; 11. High-purity argon tank; 12. Car charging pump; 13. First weight sensor; 14. First pure argon tank; 15. First medium-pressure argon pump; 16. Second pure argon tank; 17. Second medium-pressure argon pump; 18. Second weight sensor; 19. Intelligent controller; 20. Detector; 21. Display. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-3 In this embodiment, a rapid conversion device for high-purity argon and pure argon production includes a system control device 1, an air filter 2, an air compressor 3, an air precooling system 4, a molecular sieve purifier 5, an air pretreatment device 6, a heat exchanger 7, a full distillation air separation system 8, a crude distillation tower 9, a distillation tower 10, a high-purity argon tank 11, a car charging pump 12, a first weight sensor 13, a first pure argon tank 14, a first medium-pressure argon pump 15, a second pure argon tank 16, a second medium-pressure argon pump 17, a second weight sensor 18, an intelligent controller 19, a detector 20 and a display 21. The air outlet of the air filter 2 is connected to the air compressor 3 through a first pipeline, the air outlet of the air compressor 3 is connected to the air precooling system 4 through a second pipeline, the air outlet of the air precooling system 4 is connected to the molecular sieve purifier 5 through a third pipeline, and the air outlet of the molecular sieve purifier 5 is connected to the air pretreatment system 2 through a fourth pipeline. The air pretreatment equipment 6 is connected to the air pretreatment equipment 6, the air outlet of the heat exchanger 7 is connected to the full distillation air separation system 8 through the sixth pipeline, the air outlet of the full distillation air separation system 8 is connected to the crude distillation tower 9 through the seventh pipeline, the air outlet of the crude distillation tower 9 is connected to the distillation tower 10 through the eighth pipeline, the air outlet on the left side of the distillation tower 10 is connected to the high-purity argon tank 11 through the ninth pipeline, and the high-purity argon tank 11 is connected to the high-purity argon tank 12. The gas outlet of the distillation tower 1 is connected to the charging pump 12 through the tenth pipeline, the gas outlet on the upper right side of the distillation tower 10 is connected to the first pure argon tank 14 through the eleventh pipeline, the gas outlet of the first pure argon tank 14 is connected to the first medium-pressure argon pump 15 through the twelfth pipeline, the gas outlet on the lower right side of the distillation tower 10 is connected to the second pure argon tank 16 through the thirteenth pipeline, and the gas outlet of the second pure argon tank 16 is connected to the second medium-pressure argon pump 17 through the fourteenth pipeline.

[0042] The output end of the intelligent controller 19 is electrically connected to the input end of the distillation tower 10, the output end of the intelligent controller 19 is electrically connected to the input end of the detector 20, the output end of the detector 20 is electrically connected to the input end of the display 21, the output end of the detector 20 is electrically connected to the input end of the distillation tower 10, the first weight sensor 13 is arranged below the high-purity argon tank 11, the first weight sensor 13 is in contact with the high-purity argon tank 11, the output end of the first weight sensor 13 is electrically connected to the input end of the display 21, the first pure argon tank 14 and the second pure argon tank 16 are both located above the second weight sensor 18, the output end of the second weight sensor 18 is electrically connected to the input end of the display 21, and the first pure argon tank 14 and the second pure argon tank 16 are both in contact with the second weight sensor 18.

[0043] The air filter 2, the air compressor 3, the air precooling system 4, the molecular sieve purifier 5, the air pretreatment equipment 6, the heat exchanger 7, the full distillation air separation system 8, the crude distillation tower 9, the distillation tower 10, the high-purity argon tank 11, the vehicle charging pump 12, the first weight sensor 13, the first pure argon tank 14, the first medium-pressure argon pump 15, the second pure argon tank 16, the second medium-pressure argon pump 17, the second weight sensor 18, the intelligent controller 19, the detector 20 and the display 21 are all electrically connected to the system control device 1.

[0044] A first control valve is fixedly installed on the outside of the seventh pipeline, a second control valve is fixedly installed on the outside of the eighth pipeline, a third control valve is fixedly installed on the outside of the ninth pipeline, a fourth control valve is fixedly installed on the outside of the eleventh pipeline, and a fifth control valve is fixedly installed on the outside of the thirteenth pipeline. The first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all electrically connected to the system control device 1.

[0045] The system control device 1 consists of an alarm, an emergency stop device and an operation panel. The air filter 2 consists of a crude oil filter, a particulate filter, a self-cleaning filter and an air purifier. The air pretreatment device 6 consists of an expander, a booster fan, a cooler and an evaporator. The system control device 1 can control the opening or closing of the entire system equipment, and can operate the system equipment at the same time, and can issue an alarm prompt. The air pretreatment device 6 can expand, pressurize, evaporate and cool the gas. The full distillation air separation system 8 can perform low-temperature distillation on the gas and remove oxygen and nitrogen from the gas. The crude distillation tower 9 and the distillation tower 10 can separate oxygen and argon from the gas.

[0046] The high-purity argon tank 11 can store high-purity argon, and the storage capacity of the high-purity argon tank 11 is 20 cubic meters. The first pure argon tank 14 and the second pure argon tank 16 can store pure argon, and the storage capacity of the first pure argon tank 14 and the second pure argon tank 16 is 10 cubic meters. The detector 20 can detect the oxygen content and nitrogen content of the high-purity argon in the distillation tower 10. The standard value of the high-purity argon in the distillation tower 10 by the detector 20 is an oxygen content ≤ 1.5×10 -6 , nitrogen content 4×10 -6 The detector 20 can detect the oxygen content and nitrogen content of pure argon in the distillation tower 10. The standard value of the detector 20 for the pure argon in the distillation tower 10 is oxygen content ≤ 10×10 -6 、Nitrogen content 50×10 -6 .

[0047] A method for producing and storing pure argon comprises the following steps:

[0048] 1) The raw air is sent into the inner side of the air filter 2, and the air filter 2 can filter and purify the harmful substances and particles in the raw air;

[0049] 2) The purified raw air is put into the inner side of the air compressor 3 through the first pipeline, and the air compressor 3 can compress the raw air;

[0050] 3) The compressed raw air is fed into the air pre-cooling system 4 through the second pipeline, and the air pre-cooling system 4 can cool and scrub the raw air;

[0051] 4) The cooled raw air is then passed through a third pipeline into the inner side of a molecular sieve purifier 5, which removes moisture and carbon dioxide from the raw air to obtain purified dry air;

[0052] 5) Dry air can be put into the inner side of the air pre-treatment device 6 through the fourth pipeline, and the air pre-treatment device 6 can expand, pressurize, evaporate and cool the dry air;

[0053] 6) The air pre-treatment device 6 can then place the dry air into the inner side of the heat exchanger 7 through the fifth pipeline, and the heat exchanger 7 can cool and reduce the temperature of the dry air;

[0054] 7) The cooled air is fed into the full distillation air separation system 8 through the sixth pipeline. The full distillation air separation system 8 can perform cryogenic distillation on the air to obtain liquid argon, and remove oxygen and nitrogen from the liquid argon.

[0055] 8) Liquid argon can be quantitatively introduced into the crude distillation tower 9 through the seventh pipeline and the first control valve for crude distillation, thereby separating and purifying the liquid argon;

[0056] 9) The crude distilled liquid argon can then be quantitatively introduced into the distillation tower 10 through the eighth pipeline and the second control valve for distillation treatment, thereby performing secondary separation and purification of the liquid argon;

[0057] 10) When pure argon needs to be produced, the intelligent controller 19 can set the design value of the liquid argon output of the distillation tower 10, and the detector 20 can detect the oxygen content and nitrogen content of the pure argon inside the distillation tower 10. The detected values ​​will be displayed on the top of the display 21;

[0058] 11) The oxygen content and nitrogen content of pure argon inside the distillation tower 10 are ≤10×10 -6 and 50×10 -6 When the pure argon in the distillation tower 10 is quantitatively put into the first pure argon tank 14 for storage through the eleventh pipeline and the fourth control valve;

[0059] 12) When the pure argon in the first pure argon tank 14 is full, the pure argon in the distillation tower 10 can be quantitatively transferred to the second pure argon tank 16 for storage via the thirteenth pipeline and the fifth control valve;

[0060] 13) The second weight sensor 18 can be used to weigh the amount of pure argon stored in the first pure argon tank 14 and the second pure argon tank 16. The weighed values ​​are displayed above the display 21. The pure argon in the first pure argon tank 14 can be pumped out for use via the twelfth pipeline and the first medium-pressure argon pump 15. The pure argon in the second pure argon tank 16 can be pumped out for use via the fourteenth pipeline and the second medium-pressure argon pump 17. They can be used for routine steelmaking and other operations.

[0061] 14) The system control device 1 can control the opening or closing of the entire system equipment, and can also operate the system equipment. When an emergency occurs, it can issue an alarm and stop the operation of the entire system equipment.

[0062] A method for producing and storing high-purity argon comprises the following steps:

[0063] 1) The raw air is sent into the inner side of the air filter 2, and the air filter 2 can filter and purify the harmful substances and particles in the raw air;

[0064] 2) The purified raw air is put into the inner side of the air compressor 3 through the first pipeline, and the air compressor 3 can compress the raw air;

[0065] 3) The compressed raw air is fed into the air pre-cooling system 4 through the second pipeline, and the air pre-cooling system 4 can cool and scrub the raw air;

[0066] 4) The cooled raw air is then passed through a third pipeline into the inner side of a molecular sieve purifier 5, which removes moisture and carbon dioxide from the raw air to obtain purified dry air;

[0067] 5) Dry air can be put into the inner side of the air pre-treatment device 6 through the fourth pipeline, and the air pre-treatment device 6 can expand, pressurize, evaporate and cool the dry air;

[0068] 6) The air pre-treatment device 6 can then place the dry air into the inner side of the heat exchanger 7 through the fifth pipeline, and the heat exchanger 7 can cool and reduce the temperature of the dry air;

[0069] 7) The cooled air is fed into the full distillation air separation system 8 through the sixth pipeline. The full distillation air separation system 8 can perform cryogenic distillation on the air to obtain liquid argon, and remove oxygen and nitrogen from the liquid argon.

[0070] 8) Liquid argon can be quantitatively introduced into the crude distillation tower 9 through the seventh pipeline and the first control valve for crude distillation, thereby separating and purifying the liquid argon;

[0071] 9) The crude distilled liquid argon can then be quantitatively introduced into the distillation tower 10 through the eighth pipeline and the second control valve for distillation treatment, thereby performing secondary separation and purification of the liquid argon;

[0072] 10) When high-purity argon needs to be produced, the intelligent controller 19 can reduce the liquid argon output of the distillation tower 10 to the design value, and the detector 20 can detect the oxygen and nitrogen content of the high-purity argon inside the distillation tower 10. The detected values ​​will be displayed above the display 21;

[0073] 11) The oxygen and nitrogen contents of the high-purity argon inside the distillation tower 10 are ≤1.5×10 -6 and 4×10 -6 When the high-purity argon in the distillation tower 10 is quantitatively put into the high-purity argon tank 11 for storage through the ninth pipeline and the third control valve;

[0074] 12) The first weight sensor 13 can be used to weigh the amount of high-purity argon stored in the high-purity argon tank 11. The weighed value will be displayed above the display 21. The high-purity argon in the high-purity argon tank 11 can be pumped out through the tenth pipeline and the filling pump 12 for use in normal arc welding and other operations.

[0075] 13) The system control device 1 can control the opening or closing of the entire system equipment, and can also operate the system equipment. When an emergency occurs, it can issue an alarm and stop the operation of the entire system equipment.

[0076] When switching from high-purity argon to pure argon production, the daily output can be increased by 1.5m 3 Liquid products.

[0077] A rapid conversion method for producing high-purity argon and pure argon comprises the following steps:

[0078] 1) The raw air is sent into the inner side of the air filter 2, and the air filter 2 can filter and purify the harmful substances and particles in the raw air;

[0079] 2) The purified raw air is put into the inner side of the air compressor 3 through the first pipeline, and the air compressor 3 can compress the raw air;

[0080] 3) The compressed raw air is fed into the air pre-cooling system 4 through the second pipeline, and the air pre-cooling system 4 can cool and scrub the raw air;

[0081] 4) The cooled raw air is then passed through a third pipeline into the inner side of a molecular sieve purifier 5, which removes moisture and carbon dioxide from the raw air to obtain purified dry air;

[0082] 5) Dry air can be put into the inner side of the air pre-treatment device 6 through the fourth pipeline, and the air pre-treatment device 6 can expand, pressurize, evaporate and cool the dry air;

[0083] 6) The air pre-treatment device 6 can then place the dry air into the inner side of the heat exchanger 7 through the fifth pipeline, and the heat exchanger 7 can cool and reduce the temperature of the dry air;

[0084] 7) The cooled air is fed into the full distillation air separation system 8 through the sixth pipeline. The full distillation air separation system 8 can perform cryogenic distillation on the air to obtain liquid argon, and remove oxygen and nitrogen from the liquid argon.

[0085] 8) Liquid argon can be quantitatively introduced into the crude distillation tower 9 through the seventh pipeline and the first control valve for crude distillation, thereby separating and purifying the liquid argon;

[0086] 9) The crude distilled liquid argon can then be quantitatively introduced into the distillation tower 10 through the eighth pipeline and the second control valve for distillation treatment, thereby performing secondary separation and purification of the liquid argon;

[0087] 10) When pure argon needs to be produced, the intelligent controller 19 can set the design value of the liquid argon output of the distillation tower 10, and the detector 20 can detect the oxygen content and nitrogen content of the pure argon inside the distillation tower 10. The detected values ​​will be displayed on the top of the display 21;

[0088] 11) The oxygen content and nitrogen content of pure argon inside the distillation tower 10 are ≤10×10-6 and 50×10 -6 When the pure argon in the distillation tower 10 is quantitatively put into the first pure argon tank 14 for storage through the eleventh pipeline and the fourth control valve;

[0089] 12) When the pure argon in the first pure argon tank 14 is full, the pure argon in the distillation tower 10 can be quantitatively transferred to the second pure argon tank 16 for storage via the thirteenth pipeline and the fifth control valve;

[0090] 13) The second weight sensor 18 can be used to weigh the amount of pure argon stored in the first pure argon tank 14 and the second pure argon tank 16. The weighed values ​​are displayed above the display 21. The pure argon in the first pure argon tank 14 can be pumped out for use via the twelfth pipeline and the first medium-pressure argon pump 15. The pure argon in the second pure argon tank 16 can be pumped out for use via the fourteenth pipeline and the second medium-pressure argon pump 17. They can be used for routine steelmaking and other operations.

[0091] 14) When high-purity argon needs to be produced, the intelligent controller 19 can reduce the liquid argon output of the distillation tower 10 to the design value, and the detector 20 can detect the oxygen and nitrogen content of the high-purity argon inside the distillation tower 10. The detected values ​​will be displayed above the display 21;

[0092] 15) The oxygen and nitrogen contents of the high-purity argon inside the distillation tower 10 are ≤1.5×10 -6 and 4×10 -6 When the high-purity argon in the distillation tower 10 is quantitatively put into the high-purity argon tank 11 for storage through the ninth pipeline and the third control valve;

[0093] 16) The first weight sensor 13 can be used to weigh the amount of high-purity argon stored in the high-purity argon tank 11. The weighed value will be displayed above the display 21. The high-purity argon in the high-purity argon tank 11 can be pumped out through the tenth pipeline and the filling pump 12 for use in normal arc welding and other operations.

[0094] 17) The system control device 1 can control the opening or closing of the entire system equipment, and can also operate the system equipment. When an emergency occurs, it can issue an alarm and stop the operation of the entire system equipment.

[0095] The working principle of the above embodiment is:

[0096] (1) The system control device 1 can be used to control the opening or closing of the entire system equipment, and the system equipment can be operated at the same time, and an alarm can be issued. The air filter 2 can filter and purify harmful substances and particles in the raw air, and the air compressor 3 can compress the raw air.

[0097] (2) The raw air can be cooled and washed by the air pre-cooling system 4, the moisture and carbon dioxide in the raw air can be removed by the molecular sieve purifier 5 to obtain purified dry air, the gas can be expanded, pressurized, evaporated and cooled by the air pre-treatment equipment 6, and the dry air can be cooled and lowered in temperature by the heat exchanger 7.

[0098] (3) The gas can be cryogenically distilled by the full distillation air separation system 8 to remove oxygen and nitrogen from the gas. The gas can be separated into oxygen and argon by the crude distillation tower 9 and the distillation tower 10. The high-purity argon tank 11 has a storage capacity of 20 cubic meters and can be used to store high-purity argon. The high-purity argon inside the high-purity argon tank 11 can be extracted for use by the filling pump 12.

[0099] (4) The first weight sensor 13 can be used to weigh and sense the storage amount of high-purity argon inside the high-purity argon tank 11. The storage capacity of the first pure argon tank 14 and the second pure argon tank 16 is ten cubic meters, which can store pure argon. The first medium-pressure argon pump 15 and the second medium-pressure argon pump 17 can be used to extract the pure argon inside the first pure argon tank 14 and the second pure argon tank 16 for use. The second weight sensor 18 can be used to weigh and sense the storage amount of high-purity argon inside the first pure argon tank 14 and the second pure argon tank 16.

[0100] (5) The design value of the liquid argon output in the distillation tower 10 can be set by the intelligent controller 19, and the detection standard values ​​of the oxygen content and nitrogen content of the detector 20 can be set. The oxygen content and nitrogen content of the high-purity argon and pure argon in the distillation tower 10 can be detected by the detector 20. The weighing values ​​of the first weight sensor 13 and the second weight sensor 18 can be displayed by the display 21, and the values ​​of the oxygen content and nitrogen content detected by the detector 20 can be displayed.

[0101] (6) Make full use of the production and storage capacity of the system equipment. When pure argon needs to be produced, the output of liquid argon is increased and the produced pure argon is stored in the first pure argon tank 14 and the second pure argon tank 16 of 10 cubic meters to supply pure argon users. When high-purity argon needs to be produced, the output of liquid argon is reduced to the design value. After analysis, when the liquid argon product reaches the high-purity argon standard, it is stored in the 20 cubic meter high-purity argon tank 11.

[0102] Compared with the existing technology, the overall structure is simple and easy to use, and the purpose of rapid conversion between high-purity argon and pure argon is achieved. The pure argon production device can produce high-purity argon and pure argon at the same time, and can produce high-purity argon and pure argon according to the needs of different users. High-purity argon and pure argon do not need to be produced separately, which saves cost and resource consumption, reduces manpower and material resources, meets the factory's use needs, and improves the use efficiency and use effect of the pure argon production device.

[0103] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0104] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rapid conversion device for producing high-purity argon and pure argon, comprising a system control device (1), an air filter (2), an air compressor (3), an air precooling system (4), a molecular sieve purifier (5), an air pretreatment device (6), a heat exchanger (7), a full distillation air separation system (8), a crude distillation tower (9), a distillation tower (10), a high-purity argon tank (11), a vehicle charging pump (12), a first weight sensor (13), a first pure argon tank (14), a first medium-pressure argon pump (15), a second pure argon tank (16), a second medium-pressure argon pump (17), a second weight sensor (18), an intelligent controller (19), a detector (20) and a display (21), characterized in that: The air outlet of the air filter (2) is connected to the air compressor (3) through a first pipeline, the air outlet of the air compressor (3) is connected to the air precooling system (4) through a second pipeline, the air outlet of the air precooling system (4) is connected to the molecular sieve purifier (5) through a third pipeline, the air outlet of the molecular sieve purifier (5) is connected to the air pretreatment equipment (6) through a fourth pipeline, the air outlet of the air pretreatment equipment (6) is connected to the heat exchanger (7) through a fifth pipeline, the air outlet of the heat exchanger (7) is connected to the full distillation air separation system (8) through a sixth pipeline, the air outlet of the full distillation air separation system (8) is connected to the crude distillation tower (9) through a seventh pipeline, and the crude distillation tower (9) is connected to the air pretreatment equipment (6) through a fourth pipeline. The gas outlet of the tower (9) is connected to the distillation tower (10) through the eighth pipeline, the gas outlet on the left side of the distillation tower (10) is connected to the high-purity argon tank (11) through the ninth pipeline, the gas outlet of the high-purity argon tank (11) is connected to the vehicle charging pump (12) through the tenth pipeline, the gas outlet on the upper right side of the distillation tower (10) is connected to the first pure argon tank (14) through the eleventh pipeline, the gas outlet of the first pure argon tank (14) is connected to the first medium-pressure argon pump (15) through the twelfth pipeline, the gas outlet on the lower right side of the distillation tower (10) is connected to the second pure argon tank (16) through the thirteenth pipeline, and the gas outlet of the second pure argon tank (16) is connected to the second medium-pressure argon pump (17) through the fourteenth pipeline.

2. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The output end of the intelligent controller (19) is electrically connected to the input end of the distillation tower (10), the output end of the intelligent controller (19) is electrically connected to the input end of the detector (20), the output end of the detector (20) is electrically connected to the input end of the display (21), and the output end of the detector (20) is electrically connected to the input end of the distillation tower (10).

3. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The first weight sensor (13) is arranged below the high-purity argon tank (11), and the output end of the first weight sensor (13) is electrically connected to the input end of the display (21). The first pure argon tank (14) and the second pure argon tank (16) are both located above the second weight sensor (18), and the output end of the second weight sensor (18) is electrically connected to the input end of the display (21).

4. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The air filter (2), air compressor (3), air precooling system (4), molecular sieve purifier (5), air pretreatment equipment (6), heat exchanger (7), full distillation air separation system (8), crude distillation tower (9), distillation tower (10), high-purity argon tank (11), vehicle charging pump (12), first weight sensor (13), first pure argon tank (14), first medium-pressure argon pump (15), second pure argon tank (16), second medium-pressure argon pump (17), second weight sensor (18), intelligent controller (19), detector (20) and display (21) are all electrically connected to the system control device (1).

5. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: A first control valve is fixedly installed on the outer side of the seventh pipeline, a second control valve is fixedly installed on the outer side of the eighth pipeline, a third control valve is fixedly installed on the outer side of the ninth pipeline, a fourth control valve is fixedly installed on the outer side of the eleventh pipeline, and a fifth control valve is fixedly installed on the outer side of the thirteenth pipeline. The first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all electrically connected to the system control device (1).

6. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The system control device (1) is composed of an alarm, an emergency stop device and an operation panel, the air filter (2) is composed of a coarse oil filter, a particle filter, a self-cleaning filter and an air purifier, and the air pretreatment device (6) is composed of an expander, a booster fan, a cooler and an evaporator.

7. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The system control device (1) controls the opening or closing of the entire system equipment, operates the system equipment at the same time, and generates an alarm prompt. The air pretreatment device (6) expands, pressurizes, evaporates and cools the gas. The full distillation air separation system (8) performs low-temperature distillation on the gas to remove oxygen and nitrogen from the gas. The crude distillation tower (9) and the distillation tower (10) separate oxygen and argon from the gas.

8. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The high-purity argon tank (11) stores high-purity argon, and the storage capacity of the high-purity argon tank (11) is 20 cubic meters. The first pure argon tank (14) and the second pure argon tank (16) store pure argon, and the storage capacity of the first pure argon tank (14) and the second pure argon tank (16) is 10 cubic meters.

9. The rapid conversion device for producing high-purity argon and pure argon according to claim 1, characterized in that: The detector (20) detects the oxygen content and nitrogen content of the high-purity argon in the distillation tower (10). The standard value of the high-purity argon in the distillation tower (10) detected by the detector (20) is an oxygen content of ≤1.5×10 -6 , nitrogen content 4×10 -6 The detector (20) detects the oxygen content and nitrogen content of pure argon in the distillation tower (10). The standard value of the pure argon in the distillation tower (10) by the detector (20) is an oxygen content ≤ 10×10 -6 、Nitrogen content 50×10 -6 .

10. A rapid conversion method for producing high-purity argon and pure argon, characterized in that: The following steps are involved: 1) The raw air is fed into the inner side of the air filter (2), and the air filter (2) filters and purifies the harmful substances and particles in the raw air; 2) The purified raw air is introduced into the inner side of the air compressor (3) through the first pipeline, and the air compressor (3) compresses the raw air; 3) The compressed raw air is put into the inner side of the air pre-cooling system (4) through the second pipeline, and the air pre-cooling system (4) cools and washes the raw air; 4) The cooled raw air is then passed through a third pipeline into the inner side of a molecular sieve purifier (5), where the molecular sieve purifier (5) removes moisture and carbon dioxide from the raw air to obtain purified dry air; 5) The dry air can be put into the inner side of the air pretreatment device (6) through the fourth pipeline, and the air pretreatment device (6) expands, pressurizes, evaporates and cools the dry air; 6) The air pre-treatment device (6) can then place the dry air into the inner side of the heat exchanger (7) through the fifth pipeline, and the heat exchanger (7) cools and reduces the temperature of the dry air; 7) The cooled air is fed into the inner side of the full distillation air separation system (8) through the sixth pipeline. The full distillation air separation system (8) performs cryogenic distillation on the air to obtain liquid argon, and removes oxygen and nitrogen from the liquid argon. 8) Liquid argon is quantitatively introduced into the inner side of the crude distillation tower (9) through the seventh pipeline and the first control valve for crude distillation treatment to separate and purify the liquid argon; 9) Then, the crude distilled liquid argon is quantitatively introduced into the inner side of the distillation tower (10) through the eighth pipeline and the second control valve for distillation treatment, and the liquid argon is subjected to secondary separation and purification; 10) When pure argon needs to be produced, the intelligent controller (19) sets the design value of the liquid argon output of the distillation tower (10), and the detector (20) detects the oxygen content and nitrogen content of the pure argon inside the distillation tower (10), and the detected values ​​are displayed above the display (21); 11) The oxygen and nitrogen contents of pure argon inside the distillation tower (10) are ≤10×10 -6 and 50×10 -6 When the pure argon in the distillation tower (10) is quantitatively placed into the inner side of the first pure argon tank (14) for storage through the eleventh pipeline and the fourth control valve; 12) When the pure argon inside the first pure argon tank (14) is full, the pure argon inside the distillation tower (10) is quantitatively placed into the inside of the second pure argon tank (16) for storage through the thirteenth pipeline and the fifth control valve; 13) The amount of pure argon stored in the first pure argon tank (14) and the second pure argon tank (16) is weighed and sensed by the second weight sensor (18), and the weighed value is displayed on the upper side of the display (21). The pure argon in the first pure argon tank (14) can be pumped out for use through the twelfth pipeline and the first medium-pressure argon pump (15), and the pure argon in the second pure argon tank (16) can be pumped out for use through the fourteenth pipeline and the second medium-pressure argon pump (17) for use in normal steelmaking work; 14) When high-purity argon needs to be produced, the intelligent controller (19) reduces the liquid argon output of the distillation tower (10) to the design value, and the detector (20) detects the oxygen content and nitrogen content of the high-purity argon inside the distillation tower (10), and the detected values ​​are displayed on the top of the display (21); 15) The oxygen and nitrogen contents of high-purity argon inside the distillation tower (10) are ≤1.5×10 -6 and 4×10 -6 When the high-purity argon in the distillation tower (10) is quantitatively placed into the high-purity argon tank (11) for storage through the ninth pipeline and the third control valve; 16) The amount of high-purity argon stored in the high-purity argon tank (11) is weighed and sensed by the first weight sensor (13), and the weighed value is displayed above the display (21). The high-purity argon in the high-purity argon tank (11) can be extracted through the tenth pipeline and the filling pump (12) for use in normal arc welding work; 17) System control equipment (1) Controls the opening or closing of the entire system equipment, operates the system equipment at the same time, issues an alarm when an emergency occurs, and stops the entire system equipment from operating.

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