Anti-interference argon recovery apparatus, and operating method therefor

Abstract

Disclosed in the present application are an anti-interference argon recovery apparatus and an operating method therefor. The anti-interference argon recovery apparatus comprises a rectification system which comprises a temperature-regulating mechanism and an argon extraction unit. The temperature-regulating mechanism comprises a temperature-regulating member and a connection line system, wherein the temperature-regulating member comprises a main heat exchanger which comprises a heat-exchange body and a built-in line system; and the connection line system comprises a material delivery line, the material delivery line comprises a feed-in line and a discharge line, and the discharge line comprises two distribution lines and a collecting line. The argon extraction unit comprises an argon-rectifying column, an argon column reboiler, an argon-rectifying line system, a first valve group, and an anti-interference assembly, wherein the anti-interference assembly comprises a regulating valve group and a temperature measurement member, and the regulating valve group comprises a first regulating valve and a second regulating valve. The present application ensures that the heat transfer rate remains constant when cooled dry crude argon enters the argon column reboiler for heat exchange, thereby ensuring the stability of rectification operating conditions.

Description

Anti-interference argon recovery equipment and its working method Technical Field

[0001] This application relates to the field of argon recovery technology, and in particular to interference-resistant argon recovery equipment and its operating method. Background Technology

[0002] Currently, the Czochralski method, which uses reduced pressure crystal pulling, produces a large amount of crude argon gas during the production of monocrystalline silicon. Recycling and utilizing this argon gas is of great practical significance.

[0003] Patent CN116332139A discloses an argon recovery device that integrates high-purity nitrogen and enhances efficiency, and a method for using it. After pretreatment, crude argon is cooled by a first heat exchanger to obtain dry crude argon. The dry crude argon is then transported to the reboiler at the bottom of the argon column for liquefaction. The fluid output from the reboiler is depressurized and then transported to the upper part of the argon column to participate in distillation.

[0004] Due to temperature errors during pretreatment and variations in the composition of crude argon, the composition of dried crude argon will fluctuate. Since different gas components have different liquefaction temperatures, the temperature of dried crude argon will fluctuate significantly. This causes large fluctuations in the heat load of the reboiler in the argon refining column, which in turn leads to unstable distillation conditions and results in the purity of the obtained argon product not being guaranteed.

[0005] In addition, the temperature deviation of the heat exchange in the first heat exchanger can also lead to unstable operation of the argon column reboiler, which in turn affects the distillation. Summary of the Invention

[0006] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides an interference-resistant argon recovery device, said interference-resistant argon recovery device comprising a distillation system, said distillation system comprising:

[0007] A temperature control mechanism includes a temperature control component and a conduit assembly. The temperature control component includes a main heat exchanger, which includes a heat exchange body and an internal tube assembly. The conduit assembly includes a feed pipe, which includes an inlet pipe and a outlet pipe. The outlet pipe includes two branch pipes and a converging pipe. One end of the inlet pipe is connected to the heat exchange body to introduce dry crude argon gas into the heat exchange body. The internal tube assembly includes a first internal tube and a second internal tube. Both the first internal tube and the second internal tube are placed inside the heat exchange body and are respectively connected to the two branch pipes. The heat transfer area of ​​the first internal tube is smaller than that of the second internal tube. One end of the converging pipe is simultaneously connected to the ends of the two branch pipes away from the main heat exchanger. The dry crude argon gas introduced by the inlet pipe is cooled in the main heat exchanger and then discharged from the two branch pipes and converges into the converging pipe.

[0008] Argon extraction unit, the argon extraction unit comprising:

[0009] Argon refining tower;

[0010] An argon tower reboiler is installed inside the refined argon tower and located at the bottom of the tower. The argon tower reboiler is connected to the other end of the collection pipe. The cooled and dried crude argon gas obtained by heat exchange in the main heat exchanger flows through the distribution pipe and the collection pipe and is introduced into the argon tower reboiler. The cooled and dried crude argon gas is liquefied in the argon tower reboiler to obtain crude liquid argon.

[0011] A fine argon tube assembly; the fine argon tube assembly includes a first inlet tube, the two ends of which are respectively connected to the lower end of the argon column reboiler and the upper end of the fine argon column;

[0012] The first valve group includes a crude liquid argon throttling valve, which is installed on the first inlet pipe. Crude liquid argon enters the first inlet pipe from the argon tower reboiler and flows through the crude liquid argon throttling valve. After being depressurized by the crude liquid argon throttling valve, it is introduced into the refined argon tower. After being depressurized, the crude liquid argon is introduced into the refined argon tower and then distilled to obtain pure liquid argon and an argon-nitrogen mixture.

[0013] Anti-interference component, the anti-interference component comprising:

[0014] A regulating valve assembly, comprising a first regulating valve and a second regulating valve, wherein the first regulating valve is installed on the distribution pipe connected to the first internal pipe, and the second regulating valve is installed on the distribution pipe connected to the second internal pipe, wherein the first regulating valve and the second regulating valve respectively regulate the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe to the collection pipe;

[0015] A temperature sensor is installed in the collection pipe and is used to detect the temperature of the cooled, dried crude argon gas flowing through the collection pipe to the argon tower reboiler.

[0016] According to one embodiment of this application, the argon extraction unit further includes an argon tower condenser-evaporator, which is installed at the top of the refined argon tower. The refined argon tube assembly includes a second inlet pipe, the two ends of which are respectively connected to the lower end of the argon tower reboiler and the upper end of the argon tower condenser-evaporator. The first valve assembly includes a pure liquid argon throttling valve, which is installed on the second inlet pipe. The pure liquid argon in the refined argon tower flows into the argon tower reboiler as a cold source for the liquefaction of the cooled crude argon gas after heat exchange. The pure liquid argon in the argon tower reboiler is partially vaporized by heat exchange and discharged into the refined argon tower as part of the argon-nitrogen mixture. A portion of the pure liquid argon in the argon tower reboiler flows through the second inlet pipe and through the pure liquid argon throttling valve, where it is depressurized and then introduced into the argon tower condenser-evaporator. The refined argon tube assembly includes a third inlet pipe, the two ends of which are connected to the high end of the refined argon tower and the high end of the argon tower condenser / evaporator, respectively. The refined argon tower is connected to the argon tower condenser / evaporator through the third inlet pipe to supply argon-nitrogen mixed gas to the argon tower condenser / evaporator. The refined argon tube assembly also includes a supplementary pipe, one end of which is connected to the argon tower condenser / evaporator to supply external liquid argon to the argon tower condenser / evaporator. The pure liquid argon and the external liquid argon are heat-exchanged with the argon-nitrogen mixed gas introduced through the third inlet pipe to obtain pure argon gas, argon-nitrogen mixed liquid, and waste argon gas. The refined argon tube assembly also includes a reflux pipe, the two ends of which are connected to the low end of the argon tower condenser / evaporator and the high end of the refined argon tower, respectively. The argon tower condenser / evaporator is connected to the refined argon tower through the reflux pipe to supply argon-nitrogen mixed liquid to the refined argon tower.

[0017] According to one embodiment of this application, the conduit assembly includes a pure argon gas pipeline and a waste argon gas pipeline. One end of the pure argon gas pipeline and one end of the waste argon gas pipeline are both connected to the argon tower condenser-evaporator. Pure argon gas obtained by heat exchange of pure liquid argon in the argon tower condenser-evaporator is discharged through the pure argon gas pipeline. Waste argon gas obtained by heat exchange of argon-nitrogen mixed gas in the argon tower condenser-evaporator is discharged through the waste argon gas pipeline. The heat exchange body is installed on the pure argon gas pipeline and the waste argon gas pipeline. The pure argon gas flowing through the pure argon gas pipeline to be introduced into the heat exchange body and the waste argon gas flowing through the waste argon gas pipeline to be introduced into the heat exchange body serve as cold sources to exchange heat with the dry crude argon gas introduced into the main heat exchanger through the feed pipe.

[0018] According to one embodiment of this application, the interference-resistant argon recovery equipment includes a raw material pretreatment system. The raw material pretreatment system includes a heat transfer component, which includes a heat transfer assembly and a phase-connection pipe assembly. The heat transfer assembly includes a heating assembly. The phase-connection pipe assembly includes a first phase-connection pipe, and the heating assembly is installed on the first phase-connection pipe. After compression and degreasing (removing oil and dust), crude argon gas is introduced into the heating assembly through the first phase-connection pipe. The heating assembly is used to heat the crude argon gas. The phase-connection pipe assembly also includes a second phase-connection pipe. The heat transfer assembly further includes a water cooler, which is installed on the second phase-connection pipe. The raw material pretreatment system includes a catalytic reactor assembly connected to one end of the first phase-connection pipe. Heated crude argon gas, obtained by the heating assembly, is introduced into the catalytic reactor assembly through the first phase-connection pipe. The system is used to remove carbon monoxide and oxygen from heated crude argon gas to obtain crude argon gas containing carbon dioxide. The raw material pretreatment system includes an argon precooling and purification system. The two ends of the second phase connector are respectively connected to the catalytic reactor group and the argon precooling and purification system. The catalytic reactor group is connected to the argon precooling and purification system through the second phase connector. The crude argon gas containing carbon dioxide obtained by the catalytic reactor group flows through the water cooler to cool down and then is directed to the argon precooling and purification system. The argon precooling and purification system is used to remove water and carbon dioxide from the crude argon gas containing carbon dioxide to obtain dry crude argon gas. The other end of the feed pipe is connected to the argon precooling and purification system. The argon precooling and purification system is connected to the heat exchange body through the feed pipe to introduce dry crude argon gas into the heat exchange body.

[0019] According to one embodiment of this application, the first phase connector includes an inlet pipe and a first outlet pipe. The heating group includes a regenerator and an electric heater. The regenerator is connected to one end of the inlet pipe to introduce crude argon gas into the regenerator through the inlet pipe. The regenerator is used to preheat the introduced crude argon gas. The electric heater is connected to the regenerator through a pipeline to introduce the preheated crude argon gas into the electric heater through the regenerator. The electric heater is used to reheat the preheated crude argon gas. The two ends of the first outlet pipe are respectively connected to the electric heater and the catalytic reactor group. The electric heater is connected to the catalytic reactor group through the first outlet pipe to introduce heated crude argon gas into the catalytic reactor group through the electric heater. The inlet pipe includes a feed pipe and an oxygen supply pipe. One end of the feed pipe is connected to the regenerator. Crude argon gas is introduced into the regenerator through the feed pipe. The oxygen supply pipe is connected radially to the feed pipe and is used to introduce air or oxygen into the feed pipe.

[0020] According to one embodiment of this application, the second phase connection pipe includes a heat recovery pipe and a second discharge pipe. The two ends of the heat recovery pipe are respectively connected to the catalytic reactor group and the regenerator. The catalytic reactor group is connected to the regenerator through the heat recovery pipe to introduce crude argon gas containing carbon dioxide into the regenerator as a heat source for heating the crude argon gas introduced into the regenerator. The two ends of the second discharge pipe are respectively connected to the regenerator and the argon gas precooling and purification system. The regenerator is connected to the argon gas precooling and purification system through the second discharge pipe. A water cooler is installed on the second discharge pipe. The crude argon gas containing carbon dioxide discharged from the regenerator flows into the water cooler through the second discharge pipe and is cooled by the water cooler before being introduced into the argon gas precooling and purification system.

[0021] According to one embodiment of this application, the interference-resistant argon recovery equipment further includes an air pretreatment system. The air pretreatment system includes an air purification device. Air is compressed and then introduced into the air purification device to adsorb carbon dioxide and water to obtain dry air. The conduit assembly further includes a dry air pipeline. The air purification device is installed at one end of the dry air pipeline. The heat exchanger is installed on the dry air pipeline. The dry air discharged from the air purification device is introduced into the heat exchanger through the dry air pipeline to exchange heat with pure argon gas introduced into the heat exchanger through the pure argon gas pipeline and waste argon gas introduced into the heat exchanger through the waste argon gas pipeline, thereby cooling the air. The distillation system also... The system includes an auxiliary unit comprising a nitrogen purification tower connected to the other end of the dry air duct. A temperature control component includes a temperature control assembly installed in the portion of the dry air duct located between the heat exchanger and the nitrogen purification tower. Cooled dry air discharged from the heat exchanger flows through the dry air duct to the temperature control assembly for further cooling before being directed to the nitrogen purification tower. The cooled dry air is then distilled within the nitrogen purification tower to obtain oxygen-enriched liquid and nitrogen. The auxiliary unit includes an auxiliary pipeline and a nitrogen tower condenser / evaporator. The auxiliary pipeline includes a first guide pipe, the two ends of which are respectively connected to the upper end of the nitrogen purification tower and the nitrogen tower itself. The high-end section of the condenser-evaporator includes a nitrogen purification tower connected to the nitrogen tower condenser-evaporator via a first guide pipe. Nitrogen gas rising in the nitrogen purification tower is partially introduced into the nitrogen tower condenser-evaporator through the first guide pipe. The temperature control component includes a subcooler assembly, which includes a first subcooler. The auxiliary pipe includes a second guide pipe, with its two ends connected to the low end of the nitrogen purification tower and the high-end section of the nitrogen tower condenser-evaporator, respectively. The nitrogen purification tower is connected to the nitrogen tower condenser-evaporator via the second guide pipe. The first subcooler is installed on the second guide pipe. The auxiliary unit also includes a second valve assembly, which includes an oxygen-enriched liquid throttling valve. The portion of the second guide pipe located between the first subcooler and the nitrogen tower condenser / evaporator allows oxygen-enriched liquid discharged from the lower end of the nitrogen purification tower to be introduced into the first subcooler via the second guide pipe. After being cooled in the first subcooler, the liquid flows through the oxygen-enriched liquid throttling valve and into the nitrogen tower condenser / evaporator. The oxygen-enriched liquid throttling valve is used to depressurize the cooled oxygen-enriched liquid after it has been cooled in the first subcooler and subsequently directed to the nitrogen tower condenser / evaporator. After depressurization, the oxygen-enriched liquid and nitrogen exchange heat in the nitrogen tower condenser / evaporator to obtain oxygen-enriched gas and liquid nitrogen. The auxiliary pipe also includes a third guide pipe, the two ends of which are respectively connected to the lower end of the nitrogen tower condenser / evaporator and the upper end of the nitrogen purification tower.The nitrogen tower condenser / evaporator is connected to the nitrogen purification tower via the third guide pipe. Liquid nitrogen in the nitrogen tower condenser / evaporator partially flows to the nitrogen purification tower via the third guide pipe. The guide pipe assembly also includes an oxygen-enriched air pipe, which includes a main oxygen-enriched air pipe. One end of the main oxygen-enriched air pipe is connected to the high end of the nitrogen tower condenser / evaporator. The first subcooler is installed on the main oxygen-enriched air pipe. Oxygen-enriched oxygen in the nitrogen tower condenser / evaporator is introduced into the first subcooler via the main oxygen-enriched air pipe to serve as a cold source for heat exchange with the oxygen-enriched liquid flowing through the first subcooler. The oxygen-enriched air pipe also includes a liquid nitrogen pipe body. The subcooler assembly includes a second subcooler, which is installed on the replenishment pipe and the liquid nitrogen pipe body. One end of the liquid nitrogen pipe body is connected to the third guide pipe. A portion of the liquid nitrogen discharged from the nitrogen tower condenser / evaporator to the third guide pipe flows through the liquid nitrogen pipe body and into the second subcooler to serve as a cold source for heat exchange with external liquid argon flowing through the second subcooler.

[0022] According to one embodiment of this application, one end of the liquid nitrogen pipe away from the third guide pipe is connected to the portion of the oxygen-enriched air main pipe located between the first subcooler and the nitrogen tower condenser-evaporator. Liquid nitrogen heated by heat exchange in the second subcooler flows into the oxygen-enriched air main pipe to mix with the oxygen-enriched gas discharged from the nitrogen tower condenser-evaporator and is guided together to the first subcooler. The liquid nitrogen and oxygen-enriched gas as a whole exchange heat with the oxygen-enriched liquid introduced into the first subcooler to obtain oxygen-enriched air. The air purification device is connected to the other end of the oxygen-enriched air main pipe. The oxygen-enriched air obtained by heat exchange in the first subcooler is introduced into the air purification device through the portion of the oxygen-enriched air main pipe located between the first subcooler and the air purification device to serve as the regeneration gas of the air purification device.

[0023] According to one embodiment of this application, the conduit group further includes a nitrogen pipeline. The first subcooler is installed on the nitrogen pipeline. One end of the nitrogen pipeline is connected to the first flow guide pipe. A portion of the nitrogen discharged from the nitrogen purification tower to the first flow guide pipe flows through the nitrogen pipeline and is introduced into the first subcooler to serve as a cold source for heat exchange with the oxygen-enriched liquid introduced into the first subcooler. The argon precooling and purification system is connected to the other end of the nitrogen pipeline. The nitrogen that has been heated by heat exchange with the first subcooler is introduced into the argon precooling and purification system through the portion of the nitrogen pipeline located between the first subcooler and the argon precooling and purification system to serve as the regeneration gas of the argon precooling and purification system.

[0024] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a method for operating an interference-resistant argon recovery device, the method comprising the following steps:

[0025] Dry crude argon gas is introduced into the heat exchanger body through the feed pipe. The dry crude argon gas is split, with part flowing into the first built-in pipe and part flowing into the second built-in pipe. After being cooled by heat exchange in the first built-in pipe, the dry crude argon gas is guided to the feed pipe equipped with the first regulating valve. After being cooled by heat exchange in the second built-in pipe, the dry crude argon gas is guided to the feed pipe equipped with the second regulating valve. The temperature of the cooled dry crude argon gas flowing through the feed pipe equipped with the first regulating valve is higher than the temperature of the cooled dry crude argon gas flowing through the feed pipe equipped with the second regulating valve. After being cooled, the dry crude argon gas flows from the feed pipe into the collection pipe and is finally introduced into the argon tower reboiler.

[0026] The temperature sensing element detects the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler through the collection pipe. When the temperature of the cooled and dried crude argon gas remains outside the predetermined temperature range, the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe to the collection pipe is adjusted by the first regulating valve and the second regulating valve, respectively, so as to adjust the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler through the collection pipe.

[0027] After cooling, the dried crude argon gas is liquefied in the reboiler of the argon tower to obtain crude liquid argon. The crude liquid argon enters the first inlet pipe from the reboiler of the argon tower and flows through the crude liquid argon throttle valve. After being depressurized by the crude liquid argon throttle valve, it is introduced into the refined argon tower. After being depressurized, the crude liquid argon is introduced into the refined argon tower and then subjected to distillation to obtain pure liquid argon and argon-nitrogen mixture.

[0028] The beneficial effects of this application include:

[0029] 1. By adjusting the temperature of the cooled and dried crude argon gas directed to the reboiler of the argon tower, the temperature of the cooled and dried crude argon gas entering the reboiler of the argon tower is kept constant, thereby improving the anti-interference ability of the argon extraction unit, ensuring the stability of the distillation process, and thus ensuring the purity of the obtained pure argon gas.

[0030] 2. By supplementing the crude argon with air or oxygen, the ratio of carbon monoxide to oxygen is maintained at 2:1, ensuring that carbon monoxide is fully removed during subsequent treatment in the catalytic reactor. Compared with existing technologies, hydrogen is not required during deoxygenation, simplifying the argon extraction process, improving equipment safety, and reducing processing costs.

[0031] 3. By cooling and subcooling the external liquid argon, sufficient cooling capacity is provided for the heat exchange operation in the argon tower condenser-evaporator. Compared with uncooled liquid argon, the argon extraction rate is guaranteed while the replenishment amount can be kept as low as possible, reducing the use of liquid argon. Attached Figure Description

[0032] Figure 1 shows a structural flow diagram of the interference-resistant argon recovery device described in this application.

[0033] Figure 2 shows a partial structural flow diagram of the interference-resistant argon recovery device described in this application.

[0034] Figure 3 shows another partial structural flow diagram of the interference-resistant argon recovery device described in this application.

[0035] Figure 4 shows another partial structural flowchart of the interference-resistant argon recovery device described in this application.

[0036] Reference numerals: 10. Raw material pretreatment system; 11. Heat transfer component; 111. Heat transfer assembly; 1111. Heating group; 11111. Regenerator; 11112. Electric heater; 1112. Water cooler; 112. Phase connection pipe group; 1121. First phase connection pipe; 11211. Inlet pipe; 112111. Feed pipe; 112112. Oxygen supply pipe; 11212. First discharge pipe; 1122. Second phase connection pipe; 11221. Heat recovery pipe; 11222. Second discharge pipe; 12. Catalytic reactor group; 13. Argon precooling and purification system; 14. First compressor; 20. Distillation system; 21. Temperature control mechanism; 211. Temperature control component; 2111. Main heat exchanger; 21111. Heat exchanger body; 21112. Internal tube assembly; 211121. First internal tube; 211122. Second internal tube; 2112. Temperature control assembly; 21121. Auxiliary heat exchanger; 21122. Expander; 2113. Subcooler assembly; 21131. First subcooler; 21132. Second subcooler; 212. Conductor assembly; 2121. Feed passage. Pipes; 21211, Inlet pipe; 21212, Outlet pipe; 212121, Distribution pipe; 212122, Main pipe; 2122, Pure argon gas pipeline; 2123, Waste argon gas pipeline; 2124, Dry air pipeline; 21241, Dry air inlet pipe; 21242, Dry air outlet pipe; 212421, Branch pipe; 212422, Main pipe; 2125, Oxygen-enriched air pipeline; 21251, Oxygen-enriched air main pipe; 21252, Liquid nitrogen pipe body 2126. Nitrogen pipeline; 22. Argon extraction unit; 221. Refined argon tower; 222. Argon tower reboiler; 223. Refined argon tube assembly; 2231. First inlet pipe; 2232. Second inlet pipe; 2233. Third inlet pipe; 2234. Make-up pipeline; 2235. Return pipeline; 224. First valve assembly; 2241. Crude liquid argon throttle valve; 2242. Pure liquid argon throttle valve; 2243. External liquid argon control valve; 225. Argon tower condenser / evaporator; 226. Anti-interference assembly Components; 2261, regulating valve assembly; 22611, first regulating valve; 22612, second regulating valve; 2262, temperature detection component; 23, auxiliary unit; 231, nitrogen purification tower; 232, auxiliary pipeline; 2321, first guide pipeline; 2322, second guide pipeline; 2323, third guide pipeline; 233, nitrogen tower condenser / evaporator; 234, second valve assembly; 2341, oxygen-enriched liquid throttle valve; 2342, dry air throttle valve; 2343, liquid nitrogen control valve; 30, air pretreatment system; 31, air purification device; 32, second compressor. Detailed Implementation

[0037] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0038] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., 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 application and simplifying the description, and 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. Therefore, the above terms should not be construed as limitations on this application.

[0039] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0040] Referring to Figures 1 and 2, a preferred embodiment of the interference-resistant argon recovery device according to this application will be described in detail below. The interference-resistant argon recovery device is used to recover crude argon gas, wherein the gas components of the crude argon gas include oxygen, nitrogen, carbon monoxide and argon, wherein the oxygen content is 0-1000 ppm, the nitrogen content is 0-0.4%, the carbon monoxide content is 0-2000 ppm, and the remainder is argon.

[0041] The interference-resistant argon recovery equipment includes a raw material pretreatment system 10, which includes a heat transfer component 11. The heat transfer component 11 includes a heat transfer assembly 111 and a phase connector assembly 112. The heat transfer assembly 111 includes a heating assembly 1111, and the phase connector assembly 112 includes a first phase connector 1121. The heating assembly 1111 is installed on the first phase connector 1121. After compression and deoiling and dust removal, the crude argon gas is introduced into the heating assembly 1111 through the first phase connector 1121. The heating assembly 1111 is used to heat the crude argon gas.

[0042] The raw material pretreatment system 10 includes a catalytic reactor assembly 12, which is connected to one end of the first phase connector 1121. Heated crude argon gas, obtained by heating via the heating assembly 1111, is introduced into the catalytic reactor assembly 12 through the first phase connector 1121. The catalytic reactor assembly 12 is used to remove carbon monoxide and oxygen from the heated crude argon gas to obtain crude argon gas containing carbon dioxide.

[0043] Preferably, the catalytic reactor group 12 is implemented comprising at least three catalytic furnaces connected in series or in parallel, each of which is provided with a catalyst and a copper-based catalyst as a getter. The catalytic reaction of the catalyst is: 2CO + O2 = 2CO2; the getter acts to carry out the following reactions in turn: (1): 2X + O2 = 2XO; (2): XO + CO = X + CO2.

[0044] The first phase connector 1121 includes an inlet pipe 11211 and a first outlet pipe 11212. The heating assembly 1111 includes a regenerator 11111 and an electric heater 11112. The regenerator 11111 is connected to one end of the inlet pipe 11211 to introduce crude argon gas into the regenerator 11111 via the inlet pipe 11211. The regenerator 11111 is used to preheat the introduced crude argon gas. The electric heater 11112 is connected to the regenerator 11111 via a pipeline to introduce the preheated crude argon gas into the electric heater 11112 via the regenerator 11111. The electric heater 11112 is used to reheat the preheated crude argon gas. The two ends of the first discharge pipe 11212 are respectively connected to the electric heater 11112 and the catalytic reactor group 12. The electric heater 11112 is connected to the catalytic reactor group 12 through the first discharge pipe 11212 so that heated crude argon gas is introduced into the catalytic reactor group 12 by the electric heater 11112.

[0045] Preferably, the inlet pipe 11211 includes a feed pipe 112111 and an oxygen supply pipe 112112. One end of the feed pipe 112111 is connected to the regenerator 11111, and crude argon gas is introduced into the regenerator 11111 through the feed pipe 112111. The oxygen supply pipe 112112 is radially connected to the feed pipe 112111. The oxygen supply pipe 112112 is used to introduce air or oxygen into the feed pipe 112111. When the oxygen content in the crude argon gas is less than 1000 ppm, the ratio of carbon monoxide to oxygen is maintained at 2:1 by supplementing air or oxygen. This ensures that after the heated crude argon gas is processed by the catalytic reactor group 12, the carbon monoxide in it is fully removed. Compared with the prior art, hydrogen is not required during deoxygenation, simplifying the argon extraction process, improving equipment safety, and reducing processing costs.

[0046] The interference-resistant argon recovery equipment further includes an argon precooling and purification system 13. The phase connector assembly 112 further includes a second phase connector 1122, the two ends of which are respectively connected to the catalytic reactor assembly 12 and the argon precooling and purification system 13. The catalytic reactor assembly 12 is connected to the argon precooling and purification system 13 through the second phase connector 1122. The heat transfer assembly 111 further includes a water cooler 1112, which is installed on the second phase connector 1122. The crude argon gas containing carbon dioxide obtained by the catalytic reactor assembly 12 flows through the water cooler 1112 to cool down before being directed to the argon precooling and purification system 13. The argon precooling and purification system 13 is used to remove water and carbon dioxide from the crude argon gas containing carbon dioxide to obtain dry crude argon gas.

[0047] Preferably, the argon precooling purification system 13 is filled with alumina and molecular sieves.

[0048] It is worth mentioning that the second phase connector 1122 includes a heat recovery pipe 11221 and a second discharge pipe 11222. The two ends of the heat recovery pipe 11221 are respectively connected to the catalytic reactor group 12 and the regenerator 11111. The catalytic reactor group 12 is connected to the regenerator 11111 through the heat recovery pipe 11221 to introduce crude argon gas containing carbon dioxide into the regenerator 11111 as a heat source for heating the crude argon gas introduced into the regenerator 11111. The two ends of the second discharge pipe 11222 are respectively connected to the regenerator 11111 and the argon gas precooling and purification system 13. The regenerator 11111 is connected to the argon gas precooling and purification system 13 through the second discharge pipe 11222. The water cooler 1112 is installed on the second discharge pipe 11222. The crude argon gas containing carbon dioxide discharged from the regenerator 11111 flows into the water cooler 1112 through the second discharge pipe 11222 and is cooled by the water cooler 1112 before being introduced into the argon precooling and purification system 13.

[0049] The raw material pretreatment system 10 also includes a first compressor 14, which is installed on the feed pipe 112111. The first compressor 14 is connected to the regenerator 11111 through the feed pipe 112111. After oil and dust removal, the crude argon gas is compressed by the first compressor 14 and introduced into the regenerator 11111 through the feed pipe 112111.

[0050] Preferably, the temperature of the crude argon gas guided to the first compressor 14 by the feed pipe 112111 is 25-30°C, and the temperature of the crude argon gas after compression by the first compressor 14 is 35-40°C. The temperature of the heated crude argon gas obtained by heating by the regenerator 11111 is 170-180°C, and the temperature of the heated crude argon gas after secondary heating by the electric heater 11112 is 200-220°C. The crude argon gas containing carbon dioxide obtained by treatment by the catalytic reactor group 12 has a carbon monoxide and oxygen content of no more than 1 ppm, and the temperature of the crude argon gas containing carbon dioxide is 200-250°C. The temperature of the crude argon gas containing carbon dioxide after heat recovery in the regenerator 11111 is 75-80°C, and the temperature of the cooled crude argon gas containing carbon dioxide obtained by treatment by the water cooler 1112 is 35-40°C. The temperature of the dry crude argon obtained by the argon precooling and purification system 13 is 15-25°C, and the nitrogen content in the dry crude argon is 0.4%.

[0051] Referring to Figures 1 and 3, the interference-resistant argon recovery equipment further includes a distillation system 20. The distillation system 20 includes a temperature control mechanism 21, which includes a temperature control component 211 and a conduit assembly 212. The temperature control component 211 includes a main heat exchanger 2111, and the conduit assembly 212 includes a feed pipe 2121. The main heat exchanger 2111 is installed on the feed pipe 2121. The argon precooling and purification system 13 is connected to one end of the feed pipe 2121. The dry crude argon obtained by the argon precooling and purification system 13 is introduced into the main heat exchanger 2111 through the feed pipe 2121 and discharged after being cooled in the main heat exchanger 2111.

[0052] The distillation system 20 includes an argon extraction unit 22, which comprises an argon purification column 221 and an argon column reboiler 222. The argon column reboiler 222 is installed inside the argon purification column 221 and located at the bottom of the column. The argon column reboiler 222 is connected to the other end of the feed pipe 2121. The cooled and dried crude argon gas obtained by heat exchange in the main heat exchanger 2111 is introduced into the argon column reboiler 222 through the portion of the feed pipe 2121 located between the main heat exchanger 2111 and the argon column reboiler 222. The cooled and dried crude argon gas is liquefied in the argon column reboiler 222 to obtain crude liquid argon.

[0053] The argon extraction unit 22 includes a refined argon tube assembly 223 and a first valve assembly 224. The refined argon tube assembly 223 includes a first inlet pipe 2231, and the first valve assembly 224 includes a crude liquid argon throttling valve 2241. The two ends of the first inlet pipe 2231 are respectively connected to the lower end of the argon tower reboiler 222 and the upper end of the refined argon tower 221. The crude liquid argon throttling valve 2241 is installed on the first inlet pipe 2231. Crude liquid argon enters the first inlet pipe 2231 from the argon tower reboiler 222 and flows through the crude liquid argon throttling valve 2241. After being depressurized by the crude liquid argon throttling valve 2241, it is introduced into the refined argon tower 221.

[0054] Due to the pressure difference, the boiling point temperature changes with the pressure. This results in a boiling point difference between the depressurized crude argon obtained by the crude liquid argon throttling valve 2241 and the cooled, dried crude argon gas in the argon tower reboiler 222, ensuring normal heat exchange operation. The depressurized crude argon is introduced into the refined argon tower 221 for distillation to obtain pure liquid argon and an argon-nitrogen mixture. The pure liquid argon flows into the argon tower reboiler 222 as a cold source for the liquefaction of the cooled crude argon gas after heat exchange. The pure liquid argon in the argon tower reboiler 222 is partially vaporized by heat exchange and discharged into the refined argon tower 221 as part of the argon-nitrogen mixture. The rising argon gas in the refined argon tower 221 comes into gas-liquid contact with the downward flowing depressurized crude argon in the refined argon tower 221 for mass and heat transfer.

[0055] The argon extraction unit 22 further includes an argon tower condenser-evaporator 225, which is installed at the top of the refined argon tower 221. The refined argon tube assembly 223 includes a second inlet pipe 2232, the two ends of which are respectively connected to the lower end of the argon tower reboiler 222 and the upper end of the argon tower condenser-evaporator 225. The first valve assembly 224 includes a pure liquid argon throttling valve 2242, which is installed on the second inlet pipe 2232. A portion of the pure liquid argon in the argon tower reboiler 222 flows through the second inlet pipe 2232 and through the pure liquid argon throttling valve 2242, and is then depressurized by the pure liquid argon throttling valve 2242 before being introduced into the argon tower condenser-evaporator 225.

[0056] The refined argon tube assembly 223 includes a third inlet pipe 2233. The two ends of the third inlet pipe 2233 are respectively connected to the high end of the refined argon tower 221 and the high end of the argon tower condenser evaporator 225. The refined argon tower 221 is connected to the argon tower condenser evaporator 225 through the third inlet pipe 2233, so that the refined argon tower 221 supplies argon-nitrogen mixed gas to the argon tower condenser evaporator 225.

[0057] The refined argon tube assembly 223 further includes a replenishment pipe 2234 and a return pipe 2235. One end of the replenishment pipe 2234 is connected to the argon tower condenser-evaporator 225 to provide external liquid argon to the argon tower condenser-evaporator 225. The pure liquid argon and the external liquid argon are heat-exchanged with the argon-nitrogen mixture introduced through the third inlet pipe 2233 to obtain pure argon gas, argon-nitrogen mixture, and waste argon gas. The two ends of the return pipe 2235 are respectively connected to the lower end of the argon tower condenser-evaporator 225 and the upper end of the refined argon tower 221. The argon tower condenser-evaporator 225 is connected to the refined argon tower 221 through the return pipe 2235, so that the argon tower condenser-evaporator 225 supplies the refined argon tower 221 with the argon-nitrogen mixture. The argon-nitrogen mixture flows downward in the refined argon tower 221 and simultaneously undergoes heat and mass transfer with the rising argon-nitrogen mixture in the refined argon tower 221 to recover as much argon as possible.

[0058] It is worth mentioning that the external liquid argon introduced through the replenishment pipe 2234 is introduced into the argon tower condenser-evaporator 225 after being cooled, thereby providing sufficient cooling for the heat exchange operation in the argon tower condenser-evaporator 225. Compared with uncooled liquid argon, the replenishment amount can be kept as low as possible while ensuring the argon extraction rate, thus reducing the use of liquid argon.

[0059] Preferably, the temperature of the external liquid argon introduced into the argon tower condenser evaporator 225 is -182 to -184°C, which reduces the liquid argon consumption by 20% compared to non-cooled liquid argon, based on the same argon extraction rate.

[0060] Preferably, the first valve group 224 further includes an external liquid argon control valve 2243, which is installed on the replenishment pipe 2234. The external liquid argon control valve 2243 is used to adjust the flow rate of external liquid argon directed to the argon tower condenser-evaporator 225, so that the external liquid argon replenished to the argon tower condenser-evaporator 225 meets the required cooling capacity without being wasted.

[0061] The conduit assembly 212 includes a pure argon gas pipe 2122 and a waste argon gas pipe 2123. One end of the pure argon gas pipe 2122 and one end of the waste argon gas pipe 2123 are both connected to the argon tower condenser-evaporator 225. Pure argon gas obtained from heat exchange of pure liquid argon in the argon tower condenser-evaporator 225 is discharged through the pure argon gas pipe 2122 for user use. Waste argon gas obtained from heat exchange in the argon tower condenser-evaporator 225 is vented out through the waste argon gas pipe 2123.

[0062] It is worth mentioning that the main heat exchanger 2111 is installed on the pure argon gas pipeline 2122 and the waste argon gas pipeline 2123. The pure argon gas flowing through the pure argon gas pipeline 2122 to be introduced into the main heat exchanger 2111 and the waste argon gas flowing through the waste argon gas pipeline 2123 to be introduced into the main heat exchanger 2111 serve as cold sources to exchange heat with the dry crude argon gas flowing through the feed pipe 2121 to be introduced into the main heat exchanger 2111.

[0063] The feed pipe 2121 includes an inlet pipe 21211 and a outlet pipe 21212. The two ends of the inlet pipe 21211 are respectively connected to the argon precooling and purification system 13 and the main heat exchanger 2111. The argon precooling and purification system 13 is connected to the main heat exchanger 2111 through the inlet pipe 21211. The outlet pipe 21212 includes two branch pipes 212121 and a collection pipe 212122. One end of each of the two branch pipes 212121 is connected to the main heat exchanger 2111. One end of the collection pipe 212122 is connected to the argon tower reboiler 222. The end of the collection pipe 212122 away from the argon tower reboiler 222 is simultaneously connected to the ends of the two branch pipes 212121 away from the main heat exchanger 2111. The dry crude argon gas introduced through the feed pipe 21211 is cooled in the main heat exchanger 2111 and then discharged through the two feed pipes 212121 and converged into the collection pipe 212122 before being guided as a whole to the argon tower reboiler 222.

[0064] It is worth mentioning that the argon extraction unit 22 also includes an anti-interference component 226. The anti-interference component 226 includes a regulating valve group 2261 and a temperature detection element 2262. The regulating valve group 2261 includes a first regulating valve 22611 and a second regulating valve 22612. The first regulating valve 22611 and the second regulating valve 22612 are respectively installed on the two distribution pipes 212121. The temperature detection element 2262 is installed on the collection pipe 212122. The temperature detection element 2262 is used to detect the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler 222 through the collection pipe 212122. The main heat exchanger 2111 includes a heat exchange body 21111 and an internal tube assembly 21112. The heat exchange body 21111 is installed on the pure argon gas pipeline 2122 and the waste argon gas pipeline 2123. The two ends of the feed pipe 21211 are respectively connected to the argon gas precooling and purification system 13 and the heat exchange body 21111. The heat exchange body 21111 is connected to the argon gas precooling and purification system 13 through the feed pipe 21211. The built-in tube assembly 21112 includes a first built-in tube 211121 and a second built-in tube 211122. Both the first built-in tube 211121 and the second built-in tube 211122 are placed inside the heat exchange body 21111. The first built-in tube 211121 is connected to the distribution tube 212121 which is provided with the first regulating valve 22611, and the second built-in tube 211122 is connected to the distribution tube 212121 which is provided with the second regulating valve 22612. The heat transfer area of ​​the first built-in pipe 211121 is smaller than that of the second built-in pipe 211122, so that the temperature of the cooled and dried crude argon gas that exchanges heat in the first built-in pipe 211121 and is subsequently guided to the distribution pipe 212121 equipped with the first regulating valve 22611 is higher than the temperature of the cooled and dried crude argon gas that exchanges heat in the second built-in pipe 211122 and is subsequently guided to the distribution pipe 212121 equipped with the second regulating valve 22612. The first regulating valve 22611 and the second regulating valve 22612 respectively regulate the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe 212121 to the collection pipe 212122.

[0065] Specifically, when the temperature detection element 2262 detects that the temperature of the cooled dried crude argon gas remains outside the predetermined temperature range, the first regulating valve 22611 and the second regulating valve 22612 respectively adjust the flow rate of the cooled dried crude argon gas guided from the corresponding distribution pipe 212121 to the collection pipe 212122. That is, when the temperature is too high, the opening of the first regulating valve 22611 is reduced and the opening of the second regulating valve 22612 is increased to reduce the flow rate of the cooled dried crude argon gas guided from the distribution pipe 212121 to the collection pipe 212122. The flow rate is increased by adjusting the opening of the first regulating valve 22611 and the opening of the second regulating valve 22612 to increase the flow rate of the cooled and dried crude argon gas from the distribution pipe 212121 to the collection pipe 212122, and decrease the flow rate of the cooled and dried crude argon gas from the distribution pipe 212121 to the collection pipe 212122 when the temperature is too low.

[0066] In this way, by adjusting the temperature of the cooled and dried crude argon gas directed to the argon tower reboiler 222, the temperature of the cooled and dried crude argon gas entering the argon tower reboiler 222 is kept constant. This effectively prevents fluctuations in the heat load of the argon tower reboiler 222 due to fluctuations in the composition of the cooled and dried crude argon gas or deviations in the heat exchange temperature of the main heat exchanger 2111. This improves the anti-interference capability of the argon extraction unit 22, ensures the stability of the distillation process, and ultimately guarantees the purity of the obtained pure argon gas.

[0067] Preferably, the temperature sensing element 2262 is implemented as a thermometer.

[0068] Preferably, the temperature of the dried crude argon gas after being cooled by the main heat exchanger 2111 and finally introduced into the argon tower reboiler 222 through the collection pipe 212122 is -155 to -160°C. The temperature of the crude liquid argon discharged from the argon tower reboiler 222 is -158 to -160°C, and the temperature of the crude liquid argon after being depressurized by the crude liquid argon throttle valve 2241 is -160 to -163°C. The nitrogen content of the pure liquid argon discharged from the argon tower reboiler 222 is no more than 4 ppm, the temperature of the pure liquid argon is -161 to -163°C, and the temperature of the pure liquid argon after being depressurized by the pure liquid argon throttle valve 2242 is -163 to -165°C. The temperature of the argon-nitrogen mixture guided to the argon tower condenser-evaporator 225 is -162 to -164°C. The temperatures of the waste argon gas and the argon-nitrogen mixture discharged from the argon tower condenser-evaporator 225 are both -162 to -164°C. The temperature of the pure argon gas discharged from the argon tower condenser-evaporator 225 is -163 to -165°C. The temperatures of both pure argon gas and waste argon gas after heat exchange within the heat exchange body 21111 are 10 to 20°C. The temperature of the external liquid argon introduced into the argon tower condenser-evaporator 225 is -182 to -184°C.

[0069] Referring to Figures 1 and 4, the interference-resistant argon recovery equipment further includes an air pretreatment system 30, which includes an air purification device 31. Air is compressed and then introduced into the air purification device 31 to adsorb carbon dioxide and water to obtain dry air.

[0070] The air pretreatment system 30 also includes a second compressor 32, which is connected to the air purification device 31 via a pipeline. Air is compressed by the second compressor 32 and then introduced into the air purification device 31.

[0071] Preferably, the temperature of the air introduced into the second compressor 32 is 20-25°C, the temperature of the air after being compressed by the second compressor 32 is 35-40°C, and the temperature of the dry air obtained by the air purification device 31 is 15-25°C.

[0072] The conduit assembly 212 further includes a dry air duct 2124. The air purification device 31 is installed at one end of the dry air duct 2124. The heat exchange body 21111 is installed on the dry air duct 2124. The dry air discharged from the air purification device 31 is introduced into the heat exchange body 21111 through the dry air duct 2124 to exchange heat with the pure argon gas introduced into the heat exchange body 21111 by the pure argon gas duct 2122 and the waste argon gas introduced into the heat exchange body 21111 by the waste argon gas duct 2123, and thus cool down.

[0073] Referring to Figures 1 and 4, the distillation system 20 further includes an auxiliary unit 23, which includes a nitrogen purification tower 231 connected to the other end of the dry air duct 2124. The temperature control component 211 includes a temperature control assembly 2112 installed in the portion of the dry air duct 2124 located between the heat exchange body 21111 and the nitrogen purification tower 231. Cooled dry air discharged from the heat exchange body 21111 flows through the dry air duct 2124 to the temperature control assembly 2112 for further cooling before being directed to the nitrogen purification tower 231. The further cooled dry air is then distilled within the nitrogen purification tower 231 to obtain oxygen-enriched liquid and nitrogen.

[0074] The auxiliary unit 23 includes an auxiliary pipe 232 and a nitrogen tower condenser-evaporator 233. The auxiliary pipe 232 includes a first guide pipe 2321. The two ends of the first guide pipe 2321 are respectively connected to the high end of the nitrogen purification tower 231 and the high end of the nitrogen tower condenser-evaporator 233. The nitrogen purification tower 231 is connected to the nitrogen tower condenser-evaporator 233 through the first guide pipe 2321. The nitrogen rising in the nitrogen purification tower 231 is partially introduced into the nitrogen tower condenser-evaporator 233 through the first guide pipe 2321.

[0075] The temperature control component 211 includes a subcooler group 2113, the subcooler group 2113 includes a first subcooler 21131, the auxiliary pipe 232 includes a second flow guide pipe 2322, the two ends of the second flow guide pipe 2322 are respectively connected to the lower end of the nitrogen purification tower 231 and the upper end of the nitrogen tower condenser evaporator 233, the nitrogen purification tower 231 is connected to the nitrogen tower condenser evaporator 233 through the second flow guide pipe 2322, and the first subcooler 21131 is installed on the second flow guide pipe 2322. The auxiliary unit 23 further includes a second valve group 234, which includes an oxygen-enriched liquid throttling valve 2341. The oxygen-enriched liquid throttling valve 2341 is installed in the portion of the second guide pipe 2322 located between the first subcooler 21131 and the nitrogen tower condenser-evaporator 233. The oxygen-enriched liquid discharged from the lower end of the nitrogen tower 231 is introduced into the first subcooler 21131 through the second guide pipe 2322, cooled in the first subcooler 21131, and then flows through the oxygen-enriched liquid throttling valve 2341 into the nitrogen tower condenser-evaporator 233. The oxygen-enriched liquid throttling valve 2341 is used to depressurize the cooled oxygen-enriched liquid after it has been cooled in the first subcooler 21131 and subsequently directed to the nitrogen tower condenser-evaporator 233. After depressurization, the oxygen-enriched liquid and nitrogen exchange heat in the nitrogen tower condenser-evaporator 233 to obtain oxygen-enriched liquid and liquid nitrogen.

[0076] The auxiliary pipe 232 also includes a third guide pipe 2323, the two ends of which are connected to the lower end of the nitrogen tower condenser-evaporator 233 and the upper end of the nitrogen purification tower 231, respectively. The nitrogen tower condenser-evaporator 233 is connected to the nitrogen purification tower 231 through the third guide pipe 2323. Liquid nitrogen in the nitrogen tower condenser-evaporator 233 flows partially to the nitrogen purification tower 231 through the third guide pipe 2323 to exchange heat with the cooled and dried air in the nitrogen purification tower 231. As the liquid nitrogen flows downwards in the nitrogen purification tower 231, it also exchanges heat and mass with the rising cooled and dried air in the nitrogen purification tower 231, allowing the distillation operation to continue continuously.

[0077] The conduit assembly 212 further includes an oxygen-enriched air pipe 2125, which includes an oxygen-enriched air main pipe 21251. One end of the oxygen-enriched air main pipe 21251 is connected to the high end of the nitrogen tower condenser-evaporator 233. The first subcooler 21131 is installed on the oxygen-enriched air main pipe 21251. The oxygen-enriched oxygen in the nitrogen tower condenser-evaporator 233 is introduced into the first subcooler 21131 through the oxygen-enriched air main pipe 21251 to serve as a cold source for heat exchange with the oxygen-enriched liquid flowing through the first subcooler 21131.

[0078] The oxygen-enriched air duct 2125 also includes a liquid nitrogen pipe body 21252. The subcooler group 2113 includes a second subcooler 21132, which is installed on the supplementary duct 2234 and the liquid nitrogen pipe body 21252. One end of the liquid nitrogen pipe body 21252 is connected to the third guide duct 2323. The liquid nitrogen discharged from the nitrogen tower condenser evaporator 233 to the third guide duct 2323 flows through the liquid nitrogen pipe body 21252 and is introduced into the second subcooler 21132 as a cold source to exchange heat with the external liquid argon flowing through the second subcooler 21132. At this time, no additional cold source is required, which is energy-saving and environmentally friendly.

[0079] Preferably, one end of the liquid nitrogen pipe 21252 away from the third guide pipe 2323 is connected to the portion of the oxygen-enriched air main pipe 21251 located between the first subcooler 21131 and the nitrogen tower condenser-evaporator 233, so that the liquid nitrogen heated by heat exchange in the second subcooler 21132 flows into the oxygen-enriched air main pipe 21251 to mix with the oxygen-enriched oxygen discharged from the nitrogen tower condenser-evaporator 233 and is guided together to the first subcooler 21131. The liquid nitrogen and oxygen-enriched oxygen as a whole exchange heat with the oxygen-enriched liquid introduced into the first subcooler 21131 to obtain oxygen-enriched air.

[0080] It is worth mentioning that the air purification device 31 is connected to the other end of the oxygen-enriched air main pipe 21251. The oxygen-enriched air obtained by heat exchange through the first subcooler 21131 is introduced into the air purification device 31 through the part of the oxygen-enriched air main pipe 21251 located between the first subcooler 21131 and the air purification device 31, so as to serve as the regeneration gas of the air purification device 31, thereby realizing the reuse of resources without the need for additional regeneration gas, which is energy-saving and environmentally friendly.

[0081] The conduit assembly 212 also includes a nitrogen pipeline 2126. The first subcooler 21131 is installed on the nitrogen pipeline 2126. One end of the nitrogen pipeline 2126 is connected to the first guide pipe 2321. A portion of the nitrogen discharged from the nitrogen purification tower 231 to the first guide pipe 2321 flows through the nitrogen pipeline 2126 and is introduced into the first subcooler 21131 to serve as a cold source for heat exchange with the oxygen-enriched liquid introduced into the first subcooler 21131.

[0082] It is worth mentioning that the argon precooling and purification system 13 is connected to the other end of the nitrogen pipeline 2126. The nitrogen gas heated by heat exchange in the first subcooler 21131 is introduced into the argon precooling and purification system 13 through the part of the nitrogen pipeline 2126 located between the first subcooler 21131 and the argon precooling and purification system 13, so as to serve as the regeneration gas of the argon precooling and purification system 13, thereby realizing the reuse of resources without the need for additional regeneration gas, which is energy-saving and environmentally friendly.

[0083] Preferably, the heat exchanger body 21111 is installed in the portion of the oxygen-enriched air main pipe 21251 located between the air purification device 31 and the first subcooler 21131, and the heat exchanger body 21111 is installed in the portion of the nitrogen pipe 2126 located between the argon precooling purification system 13 and the first subcooler 21131. The oxygen-enriched air and nitrogen gas heated by heat exchange with the first subcooler 21131 are guided to the heat exchanger body 21111 through the portions of the oxygen-enriched air main pipe 21251 and the nitrogen pipe 2126 respectively located between the first subcooler 21131 and the heat exchanger body 21111. The oxygen-enriched air and nitrogen gas flowing into the heat exchanger body 21111 serve as a cold source for heat exchange with the dry air introduced into the heat exchanger body 21111 by the dry air pipe 2124 and the dry crude argon gas introduced into the heat exchanger body 21111 by the feed pipe 21211.

[0084] The dry air duct 2124 includes a dry air inlet pipe 21241 and a dry air outlet pipe 21242. The two ends of the dry air inlet pipe 21241 are respectively connected to the air purification device 31 and the heat exchange body 21111. The air purification device 31 is connected to the heat exchange body 21111 through the dry air inlet pipe 21241. The dry air outlet pipe 21242 includes two branch pipes 212421 and a main pipe 212422. One end of the main pipe 212422 is connected to the heat exchange body 21111, and the end of the main pipe 212422 away from the heat exchange body 21111 is simultaneously connected to one end of each of the two branch pipes 212421. The cooled dry air obtained through heat exchange within the heat exchange body 21111 flows through the main pipe 212422 to the two branch pipes 212421. The ends of the two branch pipes 212421 away from the main pipe 212422 are both connected to the nitrogen purification tower 231. The temperature control assembly 2112 includes an auxiliary heat exchanger 21121 and an expander 21122, which are respectively installed on the two branch pipes 212421. The cooled dry air flowing through the two branch pipes 212421 is introduced into the auxiliary heat exchanger 21121 and the expander 21122 for further cooling. The auxiliary heat exchanger 21121 is installed in the portion of the oxygen-enriched air main pipe 21251 and the nitrogen pipe 2126 located between the first subcooler 21131 and the heat exchange body 21111. The oxygen-enriched air and nitrogen flowing through the oxygen-enriched air main pipe 21251 and the nitrogen pipe 2126, respectively, located between the auxiliary heat exchanger 21121 and the first subcooler 21131, and introduced into the auxiliary heat exchanger 21121, serve as a cold source for exchanging heat with the cooled and dry air introduced into the auxiliary heat exchanger 21121 by the corresponding branch pipe 212421.

[0085] The second valve group 234 includes a dry air throttle valve 2342, which is installed in the portion of the branch pipe 212421 where the auxiliary heat exchanger 21121 is located between the auxiliary heat exchanger 21121 and the nitrogen purification tower 231. The dry air throttle valve 2342 is used to depressurize the re-cooled dry air discharged from the auxiliary heat exchanger 21121 and directed to the nitrogen purification tower 231.

[0086] The second valve assembly 234 further includes a liquid nitrogen control valve 2343, which is installed on the liquid nitrogen pipe body 21252 and located on the side of the second subcooler 21132 away from the third drain pipe 2233. The liquid nitrogen control valve 2343 is used to adjust the flow rate of the heated liquid nitrogen discharged from the second subcooler 21132 to match the flow rate of the external liquid argon introduced into the second subcooler 21132, so as to ensure that the external liquid argon can be cooled to a predetermined temperature range.

[0087] Preferably, the temperature of the cooled dry air discharged from the heat exchanger 21111 is -163 to -165°C, the temperature of the dried air after being cooled again by the auxiliary heat exchanger 21121 is -170 to -174°C, the temperature of the dried air after being depressurized and cooled again by the dry air throttle valve 2342 is -176 to -181°C, and the temperature of the cooled dry air discharged from the expander 21122 is -176 to -181°C. The temperature of the nitrogen discharged from the nitrogen purification tower 231 is -184 to -186°C, the temperature of the oxygen-enriched liquid discharged from the nitrogen purification tower 231 is -180 to -182°C, the temperature of the oxygen-enriched liquid discharged from the first subcooler 21131 is -181 to -183°C, and the temperature of the oxygen-enriched liquid after being depressurized by the oxygen-enriched liquid throttle valve 2341 is -186 to -189°C. The temperature of the liquid nitrogen discharged from the nitrogen tower condenser-evaporator 233 is -184 to -186°C. The temperatures of the oxygen-enriched gas discharged from the nitrogen tower condenser-evaporator 233 and the liquid nitrogen discharged from the second subcooler 21132 are both -184 to -186°C. The temperature of the external liquid argon introduced into the second subcooler 21132 is -155 to -160°C. After heat exchange in the second subcooler 21132, the temperature of the external liquid argon is -182 to -184°C. The temperatures of the oxygen-enriched air and nitrogen discharged from the first subcooler 21131 are both -175 to -178°C. The temperatures of the oxygen-enriched air and nitrogen discharged from the auxiliary heat exchanger 21121 are both -165 to -168°C. The temperatures of the oxygen-enriched air and nitrogen discharged from the heat exchanger body 21111 are both 10 to 20°C.

[0088] The following is a proposed method for operating an interference-resistant argon recovery device, comprising the following steps:

[0089] Dry crude argon gas is introduced into the heat exchanger body 21111 through the feed pipe 21211. The dry crude argon gas is split, with part flowing into the first built-in pipe 211121 and part flowing into the second built-in pipe 211122. The cooled dry crude argon gas obtained by heat exchange in the first built-in pipe 211121 is guided to the feed pipe 212121, which is equipped with the first regulating valve 22611. The cooled dry crude argon gas obtained by heat exchange in the second built-in pipe 211122 is then directed to the feed pipe 212121, which is equipped with the first regulating valve 22611. The feed pipe 212121, which is equipped with the second regulating valve 22612, is guided by a feed pipe 212121. The temperature of the cooled and dried crude argon gas flowing through the feed pipe 212121, which is equipped with the first regulating valve 22611, is higher than the temperature of the cooled and dried crude argon gas flowing through the feed pipe 212121, which is equipped with the second regulating valve 22612. The cooled and dried crude argon gas flows from the feed pipe 212121 into the collection pipe 212122 and is finally introduced into the argon tower reboiler 222.

[0090] The temperature detection element 2262 detects the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler 222 through the collection pipe 212122. When the temperature of the cooled and dried crude argon gas is kept outside the predetermined temperature range, the first regulating valve 22611 and the second regulating valve 22612 respectively regulate the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe 212121 to the collection pipe 212122, so as to adjust the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler 222 through the collection pipe 212122.

[0091] After cooling, the dried crude argon gas is liquefied in the argon tower reboiler 222 to obtain crude liquid argon. The crude liquid argon enters the first inlet pipe 2231 from the argon tower reboiler 222 and flows through the crude liquid argon throttle valve 2241. After being depressurized by the crude liquid argon throttle valve 2241, it is introduced into the refined argon tower 221. After being depressurized, the crude liquid argon is introduced into the refined argon tower 221 and then subjected to distillation to obtain pure liquid argon and argon-nitrogen mixture.

[0092] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0093] Pure liquid argon flows into the argon tower reboiler 222 to serve as a cold source for the liquefaction of the cooled crude argon gas after heat exchange within the reboiler 222. The pure liquid argon in the reboiler 222 undergoes heat exchange, resulting in partial vaporization, which is then discharged into the refined argon tower 221 as part of the argon-nitrogen mixture. The rising argon gas in the refined argon tower 221 comes into gas-liquid contact with the downward-flowing, depressurized crude liquid argon for mass and heat transfer. A portion of the pure liquid argon in the reboiler 222 passes through the second... The flow pipe 2232 flows through the pure liquid argon throttle valve 2242 and is depressurized by the pure liquid argon throttle valve 2242 before being introduced into the argon tower condenser evaporator 225. The argon-nitrogen mixture in the refined argon tower 221 is introduced into the argon tower condenser evaporator 225 through the third flow pipe 2233. External liquid argon is supplied to the argon tower condenser evaporator 225 through the supplementary pipe 2234. At this time, the pure liquid argon and the external liquid argon exchange heat with the argon-nitrogen mixture to obtain pure argon gas, argon-nitrogen mixture and waste argon gas.

[0094] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0095] Pure argon gas is discharged through the pure argon gas pipe 2122 and flows through the heat exchange body 21111, while sludge argon gas is discharged through the sludge argon gas pipe 2123 and flows through the heat exchange body 21111. Pure argon gas and sludge argon gas serve as the cold source for heat exchange within the main heat exchanger 2111.

[0096] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0097] After compression and removal of oil and dust, the crude argon gas flows through the first phase inlet 1121 and the heating group 1111 to be heated. It is then introduced into the catalytic reactor group 12, where the catalytic reactor group 12 removes carbon monoxide and oxygen from the heated crude argon gas to obtain crude argon gas containing carbon dioxide. Subsequently, the crude argon gas containing carbon dioxide flows into the second phase inlet 1122 and is cooled by the water cooler 1112 before being introduced into the argon gas precooling and purification system 13. The argon gas precooling and purification system 13 removes water and carbon dioxide from the crude argon gas containing carbon dioxide to obtain dry crude argon gas.

[0098] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0099] The argon-nitrogen mixture in the argon tower condenser evaporator 225 is introduced into the refined argon tower 221 through the reflux pipe 2235. While the argon-nitrogen mixture flows downward in the refined argon tower 221, it undergoes heat and mass transfer with the argon-nitrogen mixture rising in the refined argon tower 221 to recover argon as much as possible.

[0100] The working method of the anti-interference argon recovery equipment further includes the following steps: the oxygen replenishment pipe 112112 is used to introduce air or oxygen into the feed pipe 112111 so that the ratio of carbon monoxide to oxygen is maintained at 2:1.

[0101] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0102] The catalytic reactor group 12 supplies crude argon containing carbon dioxide to the regenerator 11111 through the heat recovery pipe 11221 as a heat source for heating the crude argon introduced into the regenerator 11111. Subsequently, the crude argon containing carbon dioxide discharged from the regenerator 11111 flows into the water cooler 1112 through the second discharge pipe 11222 and is cooled by the water cooler 1112 before being introduced into the argon precooling and purification system 13.

[0103] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0104] Air is compressed and then introduced into the air purification device 31 to adsorb carbon dioxide and water to obtain dry air. The dry air discharged from the air purification device 31 is introduced into the heat exchange body 21111 through the dry air pipe 2124 to exchange heat with the pure argon gas introduced into the heat exchange body 21111 through the pure argon gas pipe 2122 and the waste argon gas introduced into the heat exchange body 21111 through the waste argon gas pipe 2123, and is cooled down. The cooled dry air discharged from the heat exchange body 21111 flows to the temperature control component 2112 through the part of the dry air pipe 2124 located between the heat exchange body 21111 and the nitrogen purification tower 231. It is cooled down again by the temperature control component 2112 and then guided to the nitrogen purification tower 231. After being cooled down again, the dry air is distilled in the nitrogen purification tower 231 to obtain oxygen-enriched liquid and nitrogen.

[0105] Nitrogen rising in the nitrogen purification tower 231 is partially introduced into the nitrogen tower condenser-evaporator 233 through the first guide pipe 2321. Oxygen-enriched liquid discharged from the lower end of the nitrogen purification tower 231 is introduced into the first subcooler 21131 through the second guide pipe 2322. After being cooled in the first subcooler 21131, it flows through the oxygen-enriched liquid throttling valve 2341 to be depressurized before being introduced into the nitrogen tower condenser-evaporator 233. Nitrogen and oxygen-enriched liquid exchange heat in the nitrogen tower condenser-evaporator 233 to obtain liquid nitrogen and oxygen-enriched gas. Liquid nitrogen partially flows into the nitrogen purification tower 231 through the third guide pipe 2323 to provide the required cooling capacity for the nitrogen purification tower 231. The liquid nitrogen flows downwards in the nitrogen purification tower 231 while simultaneously reacting with the rising nitrogen in the nitrogen purification tower 231. After cooling again, the dry air undergoes heat and mass transfer to ensure continuous distillation. Oxygen-enriched air is introduced into the first subcooler 21131 through the oxygen-enriched air main pipe 21251 as a cold source for the oxygen-enriched liquid flowing through the first subcooler 21131. Liquid nitrogen discharged from the nitrogen tower condenser evaporator 233 to the third guide pipe 2323 flows through the liquid nitrogen pipe body 21252 and is introduced into the second subcooler 21132 as a cold source. The external liquid argon flowing through the second subcooler 21132 and guided to the argon tower condenser evaporator 225 through the supplementary pipe 2234 exchanges heat with the liquid nitrogen introduced into the second subcooler 21132 to cool down. This provides the argon tower condenser evaporator 225 with external liquid argon to maintain subcooling, providing sufficient cooling while reducing liquid argon waste.

[0106] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0107] Liquid nitrogen heated by heat exchange in the second subcooler 21132 flows into the oxygen-enriched air main pipe 21251 to mix with the oxygen-enriched oxygen discharged from the nitrogen tower condenser evaporator 233 and be guided together to the first subcooler 21131. The liquid nitrogen and oxygen-enriched oxygen as a whole exchange heat with the oxygen-enriched liquid introduced into the first subcooler 21131 to obtain oxygen-enriched air.

[0108] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0109] The oxygen-enriched air obtained by heat exchange in the first subcooler 21131 is introduced into the air purification device 31 through the portion of the oxygen-enriched air main pipe 21251 located between the first subcooler 21131 and the air purification device 31, so as to serve as the regeneration gas for the air purification device 31.

[0110] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0111] The nitrogen gas discharged from the nitrogen tower 231 to the first guide pipe 2321 flows through the nitrogen pipe 2126 and is introduced into the first subcooler 21131 to serve as a cold source for heat exchange with the oxygen-enriched liquid introduced into the first subcooler 21131.

[0112] The operation method of the interference-resistant argon recovery equipment further includes the following steps:

[0113] Nitrogen gas heated by heat exchange in the first subcooler 21131 is introduced into the argon precooling and purification system 13 through the nitrogen pipeline 2126 located between the first subcooler 21131 and the argon precooling and purification system 13, as regeneration gas for the argon precooling and purification system 13.

[0114] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. An interference-resistant argon recovery device, characterized in that, The interference-resistant argon recovery equipment includes a distillation system, which comprises: A temperature control mechanism includes a temperature control component and a conduit assembly. The temperature control component includes a main heat exchanger, which includes a heat exchange body and an internal tube assembly. The conduit assembly includes a feed pipe, which includes an inlet pipe and a outlet pipe. The outlet pipe includes two branch pipes and a converging pipe. One end of the inlet pipe is connected to the heat exchange body to introduce dry crude argon gas into the heat exchange body. The internal tube assembly includes a first internal tube and a second internal tube. Both the first internal tube and the second internal tube are placed inside the heat exchange body and are respectively connected to the two branch pipes. The heat transfer area of ​​the first internal tube is smaller than that of the second internal tube. One end of the converging pipe is simultaneously connected to the ends of the two branch pipes away from the main heat exchanger. The dry crude argon gas introduced by the inlet pipe is cooled in the main heat exchanger and then discharged from the two branch pipes and converges into the converging pipe. Argon extraction unit, the argon extraction unit comprising: Argon refining tower; An argon tower reboiler is installed inside the refined argon tower and located at the bottom of the tower. The argon tower reboiler is connected to the other end of the collection pipe. The cooled and dried crude argon gas obtained by heat exchange in the main heat exchanger flows through the distribution pipe and the collection pipe and is introduced into the argon tower reboiler. The cooled and dried crude argon gas is liquefied in the argon tower reboiler to obtain crude liquid argon. A fine argon tube assembly; the fine argon tube assembly includes a first inlet tube, the two ends of which are respectively connected to the lower end of the argon column reboiler and the upper end of the fine argon column; The first valve group includes a crude liquid argon throttling valve, which is installed on the first inlet pipe. Crude liquid argon enters the first inlet pipe from the argon tower reboiler and flows through the crude liquid argon throttling valve. After being depressurized by the crude liquid argon throttling valve, it is introduced into the refined argon tower. After being depressurized, the crude liquid argon is introduced into the refined argon tower and then distilled to obtain pure liquid argon and an argon-nitrogen mixture. Anti-interference component, the anti-interference component comprising: A regulating valve assembly, comprising a first regulating valve and a second regulating valve, wherein the first regulating valve is installed on the distribution pipe connected to the first internal pipe, and the second regulating valve is installed on the distribution pipe connected to the second internal pipe, wherein the first regulating valve and the second regulating valve respectively regulate the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe to the collection pipe; A temperature sensor is installed in the collection pipe and is used to detect the temperature of the cooled, dried crude argon gas flowing through the collection pipe to the argon tower reboiler.

2. The anti-interference argon recovery equipment according to claim 1, characterized in that... The argon extraction unit also includes an argon tower condenser-evaporator, which is installed at the top of the refined argon tower. The refined argon tube assembly includes a second inlet pipe, with its two ends connected to the lower end of the argon tower reboiler and the upper end of the argon tower condenser-evaporator, respectively. The first valve assembly includes a pure liquid argon throttling valve, which is installed on the second inlet pipe. The pure liquid argon in the refined argon tower flows into the argon tower reboiler to serve as a cold source for the liquefaction of the cooled crude argon gas through heat exchange. The pure liquid argon in the argon tower reboiler undergoes heat exchange, resulting in partial vaporization and discharge into the refined argon tower as part of the argon-nitrogen mixture. A portion of the pure liquid argon in the argon tower reboiler flows through the second inlet pipe and the pure liquid argon throttling valve, where its pressure is reduced before being introduced into the argon tower condenser-evaporator. The refined argon tube assembly... The system includes a third inlet pipe, with its two ends connected to the high end of the refined argon column and the high end of the argon column condenser-evaporator, respectively. The refined argon column is connected to the argon column condenser-evaporator through the third inlet pipe to supply argon-nitrogen mixed gas to the argon column condenser-evaporator. The refined argon column also includes a supplementary pipe, with one end connected to the argon column condenser-evaporator to supply external liquid argon. The pure liquid argon and the external liquid argon are heat-exchanged with the argon-nitrogen mixed gas introduced through the third inlet pipe to obtain pure argon gas, argon-nitrogen mixed liquid, and waste argon gas. The refined argon column also includes a reflux pipe, with its two ends connected to the low end of the argon column condenser-evaporator and the high end of the refined argon column, respectively. The argon column condenser-evaporator is connected to the refined argon column through the reflux pipe to supply argon-nitrogen mixed liquid to the refined argon column.

3. The anti-interference argon recovery equipment according to claim 2, characterized in that, The conduit assembly includes a pure argon gas pipeline and a waste argon gas pipeline. One end of the pure argon gas pipeline and one end of the waste argon gas pipeline are both connected to the argon tower condenser-evaporator. Pure argon gas obtained by heat exchange of pure liquid argon in the argon tower condenser-evaporator is discharged through the pure argon gas pipeline. Waste argon gas obtained by heat exchange of argon-nitrogen mixed gas in the argon tower condenser-evaporator is discharged through the waste argon gas pipeline. The heat exchanger body is installed on the pure argon gas pipeline and the waste argon gas pipeline. The pure argon gas flowing through the pure argon gas pipeline to be introduced into the heat exchanger body and the waste argon gas flowing through the waste argon gas pipeline to be introduced into the heat exchanger body serve as cold sources to exchange heat with the dry crude argon gas introduced into the main heat exchanger through the feed pipe.

4. The anti-interference argon recovery equipment according to claim 3, characterized in that, The interference-resistant argon recovery equipment includes a raw material pretreatment system, which includes a heat transfer component. The heat transfer component includes a heat transfer assembly and a phase-connector assembly. The heat transfer assembly includes a heating assembly. The phase-connector assembly includes a first phase-connector, and the heating assembly is installed on the first phase-connector. After compression and degreasing (removing oil and dust), crude argon gas is introduced into the heating assembly through the first phase-connector. The heating assembly is used to heat the crude argon gas. The phase-connector assembly also includes a second phase-connector. The heat transfer assembly also includes a water cooler, which is installed on the second phase-connector. The raw material pretreatment system includes a catalytic reactor assembly connected to one end of the first phase-connector. Heated crude argon gas, obtained by the heating assembly, is introduced into the catalytic reactor assembly through the first phase-connector. The catalytic reactor assembly is used to remove... The carbon monoxide and oxygen in the heated crude argon gas are removed to obtain crude argon gas containing carbon dioxide. The raw material pretreatment system includes an argon precooling and purification system. The two ends of the second phase connector are respectively connected to the catalytic reactor group and the argon precooling and purification system. The catalytic reactor group is connected to the argon precooling and purification system through the second phase connector. The crude argon gas containing carbon dioxide obtained by the catalytic reactor group flows through the water cooler to cool down and then is directed to the argon precooling and purification system. The argon precooling and purification system is used to remove water and carbon dioxide from the crude argon gas containing carbon dioxide to obtain dry crude argon gas. The other end of the feed pipe is connected to the argon precooling and purification system. The argon precooling and purification system is connected to the heat exchanger body through the feed pipe to introduce dry crude argon gas into the heat exchanger body.

5. The anti-interference argon recovery equipment according to claim 4, characterized in that, The first phase connection includes an inlet pipe and a first outlet pipe. The heating group includes a regenerator and an electric heater. The regenerator is connected to one end of the inlet pipe to introduce crude argon gas into the regenerator through the inlet pipe. The regenerator is used to preheat the introduced crude argon gas. The electric heater is connected to the regenerator through a pipeline to introduce the preheated crude argon gas into the electric heater through the regenerator. The electric heater is used to reheat the preheated crude argon gas. The two ends of the first outlet pipe are respectively connected to the electric heater and the catalytic reactor group. The electric heater is connected to the catalytic reactor group through the first outlet pipe to introduce heated crude argon gas into the catalytic reactor group through the electric heater. The inlet pipe includes a feed pipe and an oxygen supply pipe. One end of the feed pipe is connected to the regenerator. Crude argon gas is introduced into the regenerator through the feed pipe. The oxygen supply pipe is connected radially to the feed pipe and is used to introduce air or oxygen into the feed pipe.

6. The anti-interference argon recovery device according to claim 5, characterized in that, The second phase connection includes a heat recovery pipe and a second discharge pipe. The two ends of the heat recovery pipe are respectively connected to the catalytic reactor group and the regenerator. The catalytic reactor group is connected to the regenerator through the heat recovery pipe to introduce crude argon gas containing carbon dioxide into the regenerator as a heat source for heating the crude argon gas introduced into the regenerator. The two ends of the second discharge pipe are respectively connected to the regenerator and the argon gas precooling and purification system. The regenerator is connected to the argon gas precooling and purification system through the second discharge pipe. A water cooler is installed on the second discharge pipe. The crude argon gas containing carbon dioxide discharged from the regenerator flows into the water cooler through the second discharge pipe and is cooled by the water cooler before being introduced into the argon gas precooling and purification system.

7. The anti-interference argon recovery equipment according to claim 6, characterized in that, The interference-resistant argon recovery equipment further includes an air pretreatment system, which includes an air purification device. Compressed air is introduced into the air purification device to adsorb carbon dioxide and water, resulting in dry air. The conduit assembly also includes a dry air pipeline. The air purification device is installed at one end of the dry air pipeline. The heat exchanger is installed on the dry air pipeline. The dry air discharged from the air purification device is introduced into the heat exchanger through the dry air pipeline to exchange heat with the pure argon gas introduced into the heat exchanger through the pure argon gas pipeline and the waste argon gas introduced into the heat exchanger through the waste argon gas pipeline, thus cooling the air. The distillation system also includes an auxiliary unit, which includes... A nitrogen purification tower is connected to the other end of the dry air duct. The temperature control component includes a temperature control assembly installed in the portion of the dry air duct located between the heat exchanger and the nitrogen purification tower. Cooled dry air discharged from the heat exchanger flows through the dry air duct to the temperature control assembly for further cooling before being directed to the nitrogen purification tower. The cooled dry air is then distilled within the nitrogen purification tower to obtain oxygen-enriched liquid and nitrogen. The auxiliary unit includes an auxiliary pipe and a nitrogen tower condenser / evaporator. The auxiliary pipe includes a first guide pipe, with its two ends connected to the upper end of the nitrogen purification tower and the upper end of the nitrogen tower condenser / evaporator, respectively. The nitrogen purification tower is connected to the... The first guide pipe is connected to the nitrogen tower condenser-evaporator. Nitrogen rising in the nitrogen purification tower is partially introduced into the nitrogen tower condenser-evaporator through the first guide pipe. The temperature control component includes a subcooler assembly, which includes a first subcooler. The auxiliary pipe includes a second guide pipe, with its two ends connected to the lower end of the nitrogen purification tower and the upper end of the nitrogen tower condenser-evaporator, respectively. The nitrogen purification tower is connected to the nitrogen tower condenser-evaporator through the second guide pipe. The first subcooler is installed on the second guide pipe. The auxiliary unit also includes a second valve assembly, which includes an oxygen-enriched liquid throttling valve. The oxygen-enriched liquid throttling valve is installed on the second guide pipe between the first subcooler and the nitrogen tower condenser-evaporator. The section between the nitrogen tower condenser and evaporator involves the oxygen-enriched liquid discharged from the lower end of the refined nitrogen tower being introduced into the first subcooler via the second guide pipe. After being cooled in the first subcooler, the liquid flows through the oxygen-enriched liquid throttling valve and into the nitrogen tower condenser and evaporator. The oxygen-enriched liquid throttling valve is used to depressurize the cooled oxygen-enriched liquid after it has been cooled in the first subcooler and subsequently guided to the nitrogen tower condenser and evaporator. After depressurization, the oxygen-enriched liquid and nitrogen exchange heat in the nitrogen tower condenser and evaporator to obtain oxygen-enriched gas and liquid nitrogen. The auxiliary pipeline also includes a third guide pipe, the two ends of which are respectively connected to the lower end of the nitrogen tower condenser and evaporator and the upper end of the refined nitrogen tower. The nitrogen tower condenser and evaporator are connected to the refined nitrogen tower through the third guide pipe.The liquid nitrogen in the nitrogen tower condenser / evaporator flows partially to the refined nitrogen tower through the third guide pipe. The guide pipe assembly also includes an oxygen-enriched air pipe, which includes a main oxygen-enriched air pipe. One end of the main oxygen-enriched air pipe is connected to the high end of the nitrogen tower condenser / evaporator. The first subcooler is installed on the main oxygen-enriched air pipe. The oxygen-enriched oxygen in the nitrogen tower condenser / evaporator is introduced into the first subcooler through the main oxygen-enriched air pipe to serve as a cold source for heat exchange with the oxygen-enriched liquid flowing through the first subcooler. The oxygen-enriched air pipe also includes a liquid nitrogen pipe body. The subcooler assembly includes a second subcooler, which is installed on the replenishment pipe and the liquid nitrogen pipe body. One end of the liquid nitrogen pipe body is connected to the third guide pipe. A portion of the liquid nitrogen discharged from the nitrogen tower condenser / evaporator to the third guide pipe flows through the liquid nitrogen pipe body and is introduced into the second subcooler to serve as a cold source for heat exchange with the external liquid argon flowing through the second subcooler.

8. The anti-interference argon recovery device according to claim 7, characterized in that, One end of the liquid nitrogen pipe away from the third guide pipe is connected to the portion of the oxygen-enriched air main pipe located between the first subcooler and the nitrogen tower condenser-evaporator. Liquid nitrogen heated by heat exchange in the second subcooler flows into the oxygen-enriched air main pipe to mix with the oxygen-enriched gas discharged from the nitrogen tower condenser-evaporator and is guided together to the first subcooler. The liquid nitrogen and oxygen-enriched gas as a whole exchange heat with the oxygen-enriched liquid introduced into the first subcooler to obtain oxygen-enriched air. The air purification device is connected to the other end of the oxygen-enriched air main pipe. The oxygen-enriched air obtained by heat exchange in the first subcooler is introduced into the air purification device through the portion of the oxygen-enriched air main pipe located between the first subcooler and the air purification device to serve as the regeneration gas for the air purification device.

9. The anti-interference argon recovery device according to claim 7 or 8, characterized in that, The conduit assembly also includes a nitrogen pipeline. The first subcooler is installed on the nitrogen pipeline. One end of the nitrogen pipeline is connected to the first flow guide pipe. A portion of the nitrogen discharged from the nitrogen purification tower to the first flow guide pipe flows through the nitrogen pipeline and is introduced into the first subcooler to serve as a cold source for heat exchange with the oxygen-enriched liquid introduced into the first subcooler. The argon precooling and purification system is connected to the other end of the nitrogen pipeline. The nitrogen that has been heated by heat exchange with the first subcooler is introduced into the argon precooling and purification system through the portion of the nitrogen pipeline located between the first subcooler and the argon precooling and purification system to serve as the regeneration gas for the argon precooling and purification system.

10. The method of operating the anti-interference argon recovery device according to any one of claims 1 to 9, characterized in that, The operation method of the interference-resistant argon recovery equipment includes the following steps: Dry crude argon gas is introduced into the heat exchanger body through the feed pipe. The dry crude argon gas is split, with part flowing into the first built-in pipe and part flowing into the second built-in pipe. After being cooled by heat exchange in the first built-in pipe, the dry crude argon gas is guided to the feed pipe equipped with the first regulating valve. After being cooled by heat exchange in the second built-in pipe, the dry crude argon gas is guided to the feed pipe equipped with the second regulating valve. The temperature of the cooled dry crude argon gas flowing through the feed pipe equipped with the first regulating valve is higher than the temperature of the cooled dry crude argon gas flowing through the feed pipe equipped with the second regulating valve. After being cooled, the dry crude argon gas flows from the feed pipe into the collection pipe and is finally introduced into the argon tower reboiler. The temperature sensing element detects the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler through the collection pipe. When the temperature of the cooled and dried crude argon gas remains outside the predetermined temperature range, the flow rate of the cooled and dried crude argon gas guided from the corresponding distribution pipe to the collection pipe is adjusted by the first regulating valve and the second regulating valve, respectively, so as to adjust the temperature of the cooled and dried crude argon gas flowing to the argon tower reboiler through the collection pipe. After cooling, the dried crude argon gas is liquefied in the reboiler of the argon tower to obtain crude liquid argon. The crude liquid argon enters the first inlet pipe from the reboiler of the argon tower and flows through the crude liquid argon throttle valve. After being depressurized by the crude liquid argon throttle valve, it is introduced into the refined argon tower. After being depressurized, the crude liquid argon is introduced into the refined argon tower and then subjected to distillation to obtain pure liquid argon and argon-nitrogen mixture.

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