Helium dehydrogenation purification device taking air as regenerated gas

Abstract

The utility model discloses a helium dehydrogenation and purification device taking air as regenerated gas. The helium dehydrogenation and purification device comprises a catalytic dehydrogenation reactor, a first adsorption reactor and a second adsorption reactor, a refrigerant of the heat exchanger is connected with a feed gas source and a compressed air source, a refrigerant outlet of the heat exchanger is connected with an inlet of the catalytic dehydrogenation reactor, an outlet of the catalytic dehydrogenation reactor is connected with a heating medium inlet of the heat exchanger, and a heating medium outlet of the heat exchanger is connected with an inlet of the steam-water separator; inlets of the first adsorption reactor and the second adsorption reactor are connected with an outlet of the steam-water separator and a regenerated waste gas outlet; outlets of the first adsorption reactor and the second adsorption reactor are connected with a product gas outlet and a compressed air source; a hydrogen analyzer and a flow meter are arranged on a pipeline for connecting a refrigerant inlet of the heat exchanger with the feed gas source, and a flow controller and a flow control valve are arranged on a pipeline for connecting the refrigerant inlet of the heat exchanger with the compressed air source; the flow controller is electrically connected with the hydrogen analyzer and the flow meter and can control the opening degree of the flow control valve. The problem that hydrogen-containing gas cannot be provided as regeneration gas in most helium catalytic dehydrogenation purification scenes is solved.

Description

Technical Field

[0001] This utility model relates to the field of helium purification technology, and in particular to a helium dehydrogenation purification device that uses air as the regenerator. Background Technology

[0002] Currently, helium extraction is mainly achieved through purification from the blank gas (BOG) of liquefied natural gas (LNG). In the process of separating helium from BOG gas, gas separation membranes or pressure swing adsorption (PSA) technology are typically used to achieve helium separation, resulting in a purity of 80% to 95%. However, this helium-rich gas still contains 2% to 40% hydrogen. To further improve the purity of the helium, measures must be taken to remove the hydrogen.

[0003] Traditional helium dehydrogenation methods typically employ platinum and palladium as catalysts in single-stage or multi-stage catalytic dehydrogenation processes. In these processes, excess oxygen or air is usually added, utilizing the chemical reaction 2H₂ + O₂ = 2H₂O to remove hydrogen components. The dehydrogenation process requires strict temperature control to prevent temperature runaway, and excess oxygen must be added to prevent excessive hydrogen content at the outlet. After catalytic dehydrogenation, excess oxygen in the helium needs to be removed using manganese-based or nickel-based deoxidizers. These deoxidizers require multiple hydrogen reduction and regeneration processes for reuse. In most helium dehydrogenation purification scenarios, it is difficult to provide hydrogen-containing gas as regeneration gas, which significantly reduces the adaptability of multi-stage oxygen-supplemented dehydrogenation processes in helium purification. Summary of the Invention

[0004] This invention provides a helium dehydrogenation purification device that uses air as the regeneration gas, in order to solve the problem that hydrogen-containing gas cannot be provided as the regeneration gas in most helium catalytic dehydrogenation purification scenarios.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A helium dehydrogenation and purification device using air as the regenerator includes: a catalytic dehydrogenation reactor and a first adsorption reactor and a second adsorption reactor arranged in parallel.

[0007] The refrigerant inlet of the heat exchanger is connected to the raw material gas source and the compressed air source through a pipeline. The refrigerant outlet of the heat exchanger is connected to the inlet of the catalytic dehydrogenation reactor through a pipeline. The outlet of the catalytic dehydrogenation reactor is connected to the heat medium inlet of the heat exchanger through a pipeline. The heat medium outlet of the heat exchanger is connected to the inlet of the steam-water separator through a pipeline.

[0008] The inlets of the first adsorption reactor and the second adsorption reactor are respectively connected to the outlet of the steam-water separator through pipelines equipped with a first raw material inlet valve and a second raw material inlet valve, and are respectively connected to the regeneration waste gas outlet through pipelines equipped with a first regeneration outlet valve and a second regeneration outlet valve.

[0009] The outlets of the first adsorption reactor and the second adsorption reactor are respectively connected to the product gas outlet through pipelines equipped with a first product gas outlet valve and a second product gas outlet valve, and are respectively connected to a compressed air source through pipelines equipped with a first regeneration inlet valve and a second regeneration inlet valve.

[0010] A hydrogen analyzer and a flow meter are installed on the pipeline connecting the refrigerant inlet of the heat exchanger to the raw material gas source, and a flow controller and a flow control valve are installed on the pipeline connecting the refrigerant inlet of the heat exchanger to the compressed air source.

[0011] The flow controller is electrically connected to the hydrogen analyzer and the flow meter, and the flow controller can control the opening degree of the flow control valve.

[0012] Furthermore, it also includes a first valve cooler and a second valve cooler;

[0013] The first valve cooler is installed on the pipeline connecting the first adsorption reactor and the first regeneration outlet valve;

[0014] The second valve cooler is installed on the pipeline connecting the second adsorption reactor and the second regeneration outlet valve.

[0015] Furthermore, it also includes a radiator, which is installed on the pipeline connecting the heat medium outlet of the heat exchanger and the inlet of the steam-water separator.

[0016] Furthermore, it also includes a regenerated gas pressure reducer and a regenerated gas regulating valve, which are installed on the pipeline connecting the compressed air source to the first regenerated inlet valve and the second regenerated inlet valve.

[0017] Furthermore, it also includes a product gas shut-off valve, which is installed on the pipeline connecting the first product gas outlet valve and the second product gas outlet valve to the product gas outlet.

[0018] It also includes a pipeline equipped with a product gas analysis valve, one end of which is connected to the inlet end of a product gas shut-off valve.

[0019] Furthermore, it also includes a pressure gauge, which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger and the raw material gas source.

[0020] Furthermore, it also includes a shut-off valve, which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger and the raw material gas source;

[0021] It also includes an air shut-off valve, which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger and the compressed air source.

[0022] Furthermore, it also includes a regenerated gas shut-off valve and a regenerated gas cut-off valve;

[0023] The regenerated gas shut-off valve and the regenerated gas cut-off valve are installed on the pipeline connecting the compressed air source to the first regenerated inlet valve and the second regenerated inlet valve.

[0024] Furthermore, both the first and second adsorption reactors are filled with copper-containing catalysts, and the catalytic dehydrogenation reactor is filled with a noble metal platinum-palladium catalyst.

[0025] Furthermore, the copper-containing catalyst is a JTC-CO01 catalyst.

[0026] Beneficial Effects: This utility model discloses a helium dehydrogenation purification device using air as the regeneration gas. Most of the hydrogen in the gas is removed through a catalytic dehydrogenation reactor. The gas, now mostly dehydrogenated, enters a first or second adsorption reactor where residual hydrogen is adsorbed by a catalyst. When the catalyst in either the first or second adsorption reactor becomes deactivated and needs regeneration, the process switches to the other adsorption reactor. Air is introduced into the reactor requiring regeneration, and the air is heated to desorb the catalyst. After desorption, adsorption can resume. The first and second adsorption reactors are connected in parallel, with one serving as a backup, ensuring continuous and uninterrupted helium dehydrogenation. Air serves as both the reactant gas in the catalytic dehydrogenation reactor and the regeneration gas in the adsorption reactor, effectively reducing the types and quantities of gases required on-site. This optimizes the operation process and preparation work of the purification device, and lowers its operating costs.

[0027] Meanwhile, by electrically connecting the flow controller to the hydrogen analyzer and flow meter, the hydrogen analyzer and flow meter can work with the flow controller to adjust the opening of the flow control valve, so that the air injected into the catalytic dehydrogenation reactor does not need to be excessive, reducing the total amount of oxygen to be removed. This eliminates the need to use deoxidizers to remove large amounts of oxygen, and also eliminates the need for hydrogen-containing gas as regeneration gas to reduce the deoxidizers. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a helium dehydrogenation and purification device using air as the regeneration gas disclosed in this utility model.

[0030] Figure 2 This is a schematic diagram of gas flow during the adsorption process of a helium dehydrogenation purification device using air as the regenerated gas disclosed in this utility model.

[0031] Figure 3 This is a schematic diagram of gas flow during the regeneration process of a helium dehydrogenation purification device using air as the regeneration gas disclosed in this utility model.

[0032] In the diagram: 1. Shut-off valve; 2. Pressure gauge; 3. Hydrogen analyzer; 4. Flow meter; 5. Heat exchanger; 6. Radiator; 7. Flow controller; 8. Flow control valve; 9. Air shut-off valve; 10. Regeneration gas shut-off valve; 11. Regeneration gas pressure reducer; 12. Regeneration gas shut-off valve; 13. Regeneration gas regulating valve; 14. First adsorption reactor; 15. First regeneration inlet valve; 16. First product gas outlet valve; 17. Second regeneration inlet valve; 18. Second product gas outlet valve; 19. Product gas analysis valve; 20. Product gas shut-off valve; 21. Second adsorption reactor; 22. First valve cooler; 23. First regeneration outlet valve; 24. Second valve cooler; 25. Second regeneration outlet valve; 26. Second feed inlet valve; 27. First feed inlet valve; 28. Catalytic dehydrogenation reactor; 29. ​​Drain valve; 30. Gas-liquid separator. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This embodiment provides a helium dehydrogenation and purification device that uses air as the regeneration gas, such as... Figure 1As shown, it includes: a catalytic dehydrogenation reactor 28 and a first adsorption reactor 14 and a second adsorption reactor 21 arranged in parallel. The first adsorption reactor 14 and the second adsorption reactor 21 are both multi-bed reactors, and each bed of the multi-bed reactor is equipped with a temperature sensor.

[0035] The refrigerant inlet of heat exchanger 5 is connected to the raw material gas source and the compressed air source through pipelines. The raw material gas is helium-rich gas obtained by the front-end pressure swing adsorption process. The compressed air source is an air compressor. The refrigerant outlet of heat exchanger 5 is connected to the inlet of catalytic dehydrogenation reactor 28 through pipelines. The outlet of catalytic dehydrogenation reactor 28 is connected to the heat medium inlet of heat exchanger 5 through pipelines. The heat medium outlet of heat exchanger 5 is connected to the inlet of steam-water separator 30 through pipelines. The condensate separated by steam-water separator 30 is discharged from drain valve 29.

[0036] The inlets of the first adsorption reactor 14 and the second adsorption reactor 21 are respectively connected to the outlet of the gas-water separator 30 through pipelines equipped with a first raw material inlet valve 27 and a second raw material inlet valve 26, and are respectively connected to the regenerated waste gas outlet through pipelines equipped with a first regeneration outlet valve 23 and a second regeneration outlet valve 25.

[0037] The outlets of the first adsorption reactor 14 and the second adsorption reactor 21 are respectively connected to the product gas outlet through a pipeline equipped with a first product gas outlet valve 16 and a pipeline equipped with a second product gas outlet valve 18, and are respectively connected to a compressed air source through a pipeline equipped with a first regeneration inlet valve 15 and a pipeline equipped with a second regeneration inlet valve 17.

[0038] A hydrogen analyzer 3 and a flow meter 4 are installed on the pipeline connecting the refrigerant inlet of the heat exchanger 5 to the raw material gas source, and a flow controller 7 and a flow control valve 8 are installed on the pipeline connecting the refrigerant inlet of the heat exchanger 5 to the compressed air source.

[0039] The flow controller 7 is electrically connected to the hydrogen analyzer 3 and the flow meter 4, and the flow controller 7 can control the opening degree of the flow control valve 8.

[0040] In this embodiment, both the first adsorption reactor 14 and the second adsorption reactor 21 are filled with copper-containing catalysts, and the catalytic dehydrogenation reactor 28 is filled with a precious metal platinum-palladium catalyst. In this embodiment, the copper-containing catalyst is JTC-CO01 catalyst produced by Junte Catalytic Materials Dalian Co., Ltd., with a hydrogen capacity of 10-30 ml / g (i.e., each gram of catalyst can adsorb 10-30 ml of hydrogen gas), an operating temperature of 180-250℃, and during adsorption, the temperature of the adsorption reactor is adjusted to 220-250℃. During regeneration, the temperature of the regeneration gas needs to be heated to 150-180℃.

[0041] The oxidized copper component in the catalyst can be reduced by hydrogen to adsorb hydrogen, and the copper reduced by hydrogen can be oxidized by oxygen to adsorb oxygen. After the feed gas is dehydrogenated in the catalytic dehydrogenation reactor 28, the hydrogen content in the gas is less than 200 ppm and the oxygen content is less than 10 ppm (the feed gas supply fluctuates, so there will be trace amounts of oxygen remaining). The gas then enters the first adsorption reactor 14 or the second adsorption reactor 21, where the remaining hydrogen and oxygen are reduced to less than 0.1 ppm.

[0042] This embodiment discloses a helium dehydrogenation purification device using air as the regeneration gas. Most of the hydrogen in the gas is removed through a catalytic dehydrogenation reactor 28. The gas, now mostly dehydrogenated, enters a first adsorption reactor 14 or a second adsorption reactor 21 where residual hydrogen is adsorbed by a catalyst. When the catalyst in either reactor deactivates and needs regeneration, the process switches to the other adsorption reactor. An air compressor supplies air to the reactor requiring regeneration, and the reactor heats the air to desorb the catalyst. After desorption, adsorption can resume. The first and second adsorption reactors 14 and 21 are connected in parallel, one for standby and one for use, ensuring continuous and uninterrupted helium dehydrogenation. Air serves as both the reactant gas in the catalytic dehydrogenation reactor 28 and the regeneration gas in the adsorption reactor, effectively reducing the types and quantities of gases required on-site. This optimizes the operation process and preparation work of the purification device, reduces operating costs, and expands the applicability and adaptability of the dehydrogenation process.

[0043] By electrically connecting the flow controller 7 to the hydrogen analyzer 3 and the flow meter 4, the hydrogen analyzer 3 and the flow meter 4 can work with the flow controller 7 to adjust the opening of the flow control valve (the flow controller 7 calculates the flow rate of air to be injected into the catalytic dehydrogenation reactor 28 based on the data measured by the hydrogen analyzer 3 and the flow meter 4, and adjusts the opening of the flow control valve 8 accordingly, as will not be elaborated in the prior art). This ensures that the air injected into the catalytic dehydrogenation reactor 28 is not excessive, reducing the total amount of oxygen to be removed. Therefore, it is not necessary to use a deoxidizer to remove large amounts of oxygen, and thus, hydrogen-containing gas is not needed as regeneration gas to reduce the deoxidizer.

[0044] In a specific embodiment, such as Figure 1 As shown, it also includes a first valve cooler 22 and a second valve cooler 24 for cooling the waste gas generated during regeneration.

[0045] The first valve cooler 22 is installed on the pipeline connecting the first adsorption reactor 14 and the first regeneration outlet valve 23;

[0046] The second valve cooler 24 is installed on the pipeline connecting the second adsorption reactor 21 and the second regeneration outlet valve 25.

[0047] In a specific embodiment, a radiator 6 is also included. The radiator 6 is installed on the pipeline connecting the heat medium outlet of the heat exchanger 5 and the inlet of the gas-water separator 30. A cooling fan corresponding to the radiator 6 can be installed to further reduce the temperature of the gas on the basis of pre-cooling by the heat exchanger 5, so that the gas-water separator 30 can separate the gas from the water.

[0048] In a specific embodiment, a regeneration gas pressure reducer 11 and a regeneration gas regulating valve 13 are also included. The regeneration gas pressure reducer 11 and the regeneration gas regulating valve 13 are arranged on the pipeline connecting the compressed air source to the first regeneration inlet valve 15 and the second regeneration inlet valve 17, so that air can be introduced into the adsorption reactor to be regenerated at the pressure and flow rate required for the regeneration process.

[0049] In a specific embodiment, a product gas shut-off valve 20 is also included. The product gas shut-off valve 20 is disposed on the pipeline connecting the first product gas outlet valve 16 and the second product gas outlet valve 18 to the product gas outlet, and is used to control the supply of product gas.

[0050] It also includes a pipeline equipped with a product gas analysis valve 19. One end of the pipeline equipped with the product gas analysis valve 19 is connected to the pipeline at the inlet end of the product gas shut-off valve 20, and the other end can be connected to a gas analyzer. Before outputting product gas to downstream equipment, the product gas analysis valve 19 can be opened first to let the gas pass into the gas analyzer for testing. After the test is qualified, the product gas shut-off valve 20 is opened to deliver product gas to downstream equipment.

[0051] In a specific embodiment, a pressure gauge 2 is also included. The pressure gauge 2 is installed on the pipeline connecting the refrigerant inlet of the heat exchanger 5 and the raw material gas source to detect the inlet pressure of the raw material gas.

[0052] In a specific embodiment, a shut-off valve 1 is also included. The shut-off valve 1 is installed on the pipeline connecting the refrigerant inlet of the heat exchanger 5 and the raw material gas source to control the supply of raw material gas.

[0053] It also includes an air shut-off valve 9, which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger 5 and the compressed air source, and is used to cut off the air supplied to the catalytic dehydrogenation reactor 28.

[0054] In a specific embodiment, it also includes a regeneration gas shut-off valve 10 and a regeneration gas cut-off valve 12;

[0055] The regeneration gas shut-off valve 10 and the regeneration gas cut-off valve 12 are installed on the pipeline connecting the compressed air source to the first regeneration inlet valve 15 and the second regeneration inlet valve 17. The regeneration gas cut-off valve 12 is a manual valve and can be used to cut off the air supplied to the adsorption reaction gas for regeneration. The regeneration gas shut-off valve 10 is a program-controlled pneumatic valve and can be used to cut off the air supplied to the adsorption reaction gas for regeneration.

[0056] The flow diagram of air and feed gas during the adsorption process is shown below. Figure 2 As shown by the red line in the image ( Figure 2 The first adsorption reactor 14 is used for adsorption. The helium-rich gas supplied by the raw gas source passes through the hydrogen analyzer 3 and the flow meter 4. The flow controller 7 calculates the flow rate of the air to be injected into the catalytic dehydrogenation reactor 28 based on the data measured by the hydrogen analyzer 3 and the flow meter 4, and adjusts the opening of the flow control valve 8 accordingly. The air compressor delivers the corresponding flow rate of air. The heat exchanger 5 preheats the gas to reduce the energy consumption of the heater on the catalytic dehydrogenation reactor 28. The gas after the reaction in the catalytic dehydrogenation reactor 28 re-enters the heat exchanger 5 for cooling. The cooled gas flows through the radiator 6 for further cooling. The cooled gas is separated from the water in the gas-water separator 30. The gas after removing the water is sent to the first adsorption reactor 14 or the second adsorption reactor 21 for adsorption.

[0057] The airflow diagram during the regeneration process is shown below. Figure 3 As shown by the red line in the image ( Figure 3 (The second adsorption reactor 21 is used for regeneration). An air compressor sends air into the first adsorption reactor 14 or the second adsorption reactor 21 for regeneration. The catalyst in the regenerated adsorption reactor is in good condition. The regenerated adsorption reactor performs adsorption again. The hydrogen and oxygen contents in the helium gas discharged from the outlet are both less than 0.05 ppm. The removal accuracy meets the technical requirements. The hydrogen capacity of the catalyst can reach more than 20 ml / g.

[0058] In practical applications, after regeneration, a trace amount of air will remain in the adsorption reactor. When the quality requirements of the product gas are high, helium (which can be directly used as product gas) can be introduced to purge the adsorption reactor. The helium used for purging can be connected to the pipeline of the compressed air source connected to the first regeneration inlet valve 15 and the second regeneration inlet valve 17 through a pipeline, or the air compressor can be replaced and connected to the pipeline. After purging is completed, the air compressor can be reconnected to the pipeline.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A helium dehydrogenation and purification device using air as the regeneration gas, characterized in that, include: The catalytic dehydrogenation reactor (28) is connected in parallel with the first adsorption reactor (14) and the second adsorption reactor (21). The refrigerant inlet of the heat exchanger (5) is connected to the raw material gas source and the compressed air source through a pipeline. The refrigerant outlet of the heat exchanger (5) is connected to the inlet of the catalytic dehydrogenation reactor (28) through a pipeline. The outlet of the catalytic dehydrogenation reactor (28) is connected to the heat medium inlet of the heat exchanger (5) through a pipeline. The heat medium outlet of the heat exchanger (5) is connected to the inlet of the steam-water separator (30) through a pipeline. The inlets of the first adsorption reactor (14) and the second adsorption reactor (21) are respectively connected to the outlet of the steam-water separator (30) through a pipeline equipped with a first raw material inlet valve (27) and a pipeline equipped with a second raw material inlet valve (26), and are respectively connected to the regenerated waste gas outlet through a pipeline equipped with a first regeneration outlet valve (23) and a pipeline equipped with a second regeneration outlet valve (25). The outlets of the first adsorption reactor (14) and the second adsorption reactor (21) are respectively connected to the product gas outlet through a pipeline equipped with a first product gas outlet valve (16) and a pipeline equipped with a second product gas outlet valve (18), and are respectively connected to a compressed air source through a pipeline equipped with a first regeneration inlet valve (15) and a pipeline equipped with a second regeneration inlet valve (17). A hydrogen analyzer (3) and a flow meter (4) are provided on the pipeline connecting the refrigerant inlet of the heat exchanger (5) to the raw material gas source. A flow controller (7) and a flow control valve (8) are provided on the pipeline connecting the refrigerant inlet of the heat exchanger (5) to the compressed air source. The flow controller (7) is electrically connected to the hydrogen analyzer (3) and the flow meter (4), and the flow controller (7) can control the opening degree of the flow control valve (8).

2. The helium dehydrogenation and purification device using air as the regeneration gas according to claim 1, characterized in that, It also includes a first valve cooler (22) and a second valve cooler (24); The first valve cooler (22) is installed on the pipeline connecting the first adsorption reactor (14) and the first regeneration outlet valve (23); The second valve cooler (24) is installed on the pipeline connecting the second adsorption reactor (21) and the second regeneration outlet valve (25).

3. The helium dehydrogenation and purification device using air as the regeneration gas according to claim 1, characterized in that, It also includes a radiator (6), which is installed on the pipeline connecting the heat medium outlet of the heat exchanger (5) and the inlet of the steam-water separator (30).

4. The helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, It also includes a regenerated gas pressure reducer (11) and a regenerated gas regulating valve (13), which are installed on the pipeline connecting the compressed air source to the first regenerated inlet valve (15) and the second regenerated inlet valve (17).

5. The helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, It also includes a product gas shut-off valve (20), which is installed on the pipeline connecting the first product gas outlet valve (16) and the second product gas outlet valve (18) to the product gas outlet; It also includes a pipeline equipped with a product gas analysis valve (19), one end of which is connected to the inlet end of a product gas shut-off valve (20).

6. The helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, It also includes a pressure gauge (2), which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger (5) and the raw material gas source.

7. The helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, It also includes a shut-off valve (1), which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger (5) and the raw material gas source; It also includes an air shut-off valve (9), which is installed on the pipeline connecting the refrigerant inlet of the heat exchanger (5) and the compressed air source.

8. The helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, It also includes a regenerated gas shut-off valve (10) and a regenerated gas cut-off valve (12); The regenerated gas shut-off valve (10) and the regenerated gas cut-off valve (12) are installed on the pipeline connecting the compressed air source with the first regenerated inlet valve (15) and the second regenerated inlet valve (17).

9. A helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 1, characterized in that, The first adsorption reactor (14) and the second adsorption reactor (21) are both filled with copper-containing catalysts, and the catalytic dehydrogenation reactor (28) is filled with a noble metal platinum-palladium catalyst.

10. A helium dehydrogenation and purification apparatus using air as the regeneration gas according to claim 9, characterized in that, The copper-containing catalyst is a JTC-CO01 catalyst.

Images