Crude helium storage and recycling system for deep-cryogenic helium extraction process and recycling control method

Abstract

The application provides a crude helium storage and recycling system for a deep-cryogenic helium extraction process and a recycling control method, and relates to the technical field of helium production. The system comprises a membrane separation device, a permeated gas pressurizing device, a pressure swing adsorption device, a low-temperature adsorption device, a first storage tank group, an unloading device, a second storage tank group, a first detection unit, a second detection unit, a first recycling circuit, a second recycling circuit, a third recycling circuit, and a control device. The first detection unit is arranged at the outlet of the pressure swing adsorption device to monitor the methane and carbon dioxide concentrations in the crude helium, which can effectively prevent high-concentration impurities from entering the low-temperature adsorption device, avoid the freezing and plugging problem of the equipment caused by condensation, dynamically adjust the recycling path of the crude helium, ensure that the gas meeting the standard is sent to the next stage for processing, and thus improve the quality and production efficiency of the helium in the deep-cryogenic helium extraction process.

Description

Technical Field

[0001] This application relates to the field of helium production technology, and in particular to a crude helium storage and refining system and refining control method for cryogenic helium extraction processes. Background Technology

[0002] Cryogenic helium extraction is a method of separating helium by utilizing the critical temperature differences among the components of natural gas. This technology extracts helium from natural gas through cryogenic processing, yielding products with high purity and yield, and exhibiting superior system reliability and stability. It is currently the most widely used helium extraction method, accounting for approximately 90% of helium production. In existing helium production processes, qualified crude helium must be transported to the dehydrogenation and dehydration skid inlet for purification.

[0003] However, crude helium may contain extremely high levels of methane, carbon dioxide, and Ne. Dehydrogenation and dehydration skids are not capable of handling these high-content impurities. Directly purifying the helium in the dehydrogenation and dehydration skid would introduce these contaminants, resulting in substandard refined helium. Therefore, current technology typically involves introducing crude helium into a cryogenic adsorption unit. This unit utilizes the selective adsorption of gas molecules by the adsorbent at low temperatures to achieve preliminary purification, concentration, or drying. However, the saturated vapor pressure of carbon dioxide and methane drops drastically at low temperatures. If the carbon dioxide and methane content at the inlet of the cryogenic adsorption unit is high, these gases easily reach saturation and condense under the low-temperature conditions, forming liquid or even solid substances. Since the channels and pores of the adsorbent within the cryogenic adsorption unit are relatively narrow, these condensed substances easily adhere to the inner walls of the unit and the surface of the adsorbent, gradually accumulating and clogging the channels and pores, ultimately leading to freezing and blockage. This severely affects the normal operation of the cryogenic adsorption unit and the purification efficiency of the helium.

[0004] Therefore, a crude helium storage and reprocessing system for cryogenic helium extraction processes is needed to at least solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this application is to provide a crude helium storage and refining system for cryogenic helium extraction processes, in order to solve the problem of low crude helium purification efficiency caused by freezing and blockage when crude helium contains high levels of carbon dioxide and methane and is directly introduced into the cryogenic adsorption device in existing cryogenic helium extraction crude helium purification systems.

[0006] To address the aforementioned technical problems, this application provides the following technical solutions:

[0007] This application provides a crude helium storage and reprocessing system for cryogenic helium extraction processes, comprising:

[0008] The membrane separation unit, the permeate pressurization unit, the pressure swing adsorption unit, the low temperature adsorption unit, and the first storage tank group are connected in sequence.

[0009] An unloading device, which, along with the low-temperature adsorption device, is connected to the outlet of the pressure swing adsorption device;

[0010] A second storage tank group, the inlet of which is connected to the unloading device;

[0011] The first detection unit is located at the outlet of the pressure swing adsorption device and is used to detect the concentrations of methane and carbon dioxide in the crude helium gas.

[0012] The second detection unit is located at the outlet of the second storage tank group and is used to detect the pressure of the crude helium and the Ne concentration.

[0013] The first remelting circuit is connected to the outlet of the second storage tank group and the inlet of the pressure swing adsorption device.

[0014] The second refining circuit is connected to the outlet of the second storage tank group and the inlet of the permeate pressurization device.

[0015] The third remelting loop is connected to the outlet of the second storage tank group and the inlet of the membrane separation device;

[0016] A control device is communicatively connected to the first detection unit. The control device is used to control the crude helium gas to enter the cryogenic adsorption device or the unloading device according to the detection result of the first detection unit. If the first detection unit detects that the methane concentration in the crude helium gas reaches a first concentration threshold and / or the carbon dioxide concentration reaches a second concentration threshold, the control device controls the crude helium gas to enter the unloading device.

[0017] The control device is communicatively connected to the second detection unit. The control device is used to control the crude helium gas to enter one of the first remelting loop, the first remelting loop, and the second remelting loop according to the detection result of the second detection unit. The control device determines whether the Ne gas concentration in the crude helium gas reaches a third concentration threshold. If so, the control device controls the crude helium gas in the second storage tank group to enter the third remelting loop. If not, the control device further determines whether the crude helium gas pressure is lower than a first pressure threshold. If so, the control device controls the crude helium gas in the second storage tank group to enter the second remelting loop.

[0018] In some embodiments of this application, the crude helium storage and reprocessing system for cryogenic helium extraction processes further includes:

[0019] The third detection unit is connected to the pressure swing adsorption device and is used to detect the pressure inside the pressure swing adsorption device.

[0020] The control device is communicatively connected to the third detection unit, and the pressure value inside the pressure swing adsorption device detected by the third detection unit is used as the first pressure threshold.

[0021] In some embodiments of this application, the pressure swing adsorption device has multiple adsorption towers, which are arranged in parallel, and the third detection unit detects the pressure value in each adsorption tower respectively;

[0022] The first remelting loop is connected to multiple adsorption towers respectively, and the control device controls the crude helium gas to enter one of the adsorption towers through the first remelting loop according to the pressure result detected by the third detection unit.

[0023] The lowest pressure value among the adsorption towers detected by the third detection unit is used as the first pressure threshold.

[0024] In some embodiments of this application, the permeate gas boosting device is connected to multiple adsorption towers respectively, and the permeate gas boosting device is communicatively connected to the control device. The permeate gas boosting device is a multi-stage booster pump structure, and the control device controls the boosting ratio of the permeate gas boosting device according to the first pressure threshold.

[0025] In some embodiments of this application, the crude helium storage and reprocessing system for cryogenic helium extraction processes further includes:

[0026] The first pipeline includes a first main pipeline and a pair of first branch pipelines. One end of the first main pipeline is connected to the pressure swing adsorption device, and the other end is connected to the pair of first branch pipelines. The pair of first branch pipelines are respectively connected to the low-temperature adsorption device and the unloading device. The first detection unit is disposed on the first main pipeline.

[0027] A first flow control valve is provided on each of the first branch pipelines. The first flow control valve is communicatively connected to the control device. The control device controls the opening and closing of the first flow control valve according to the detection result of the first detection unit.

[0028] In some embodiments of this application, the crude helium storage and reprocessing system for cryogenic helium extraction processes further includes:

[0029] The second pipeline includes a second main pipeline and three second branch pipelines. One end of the second main pipeline is connected to the outlet of the second storage tank group, and the other end is connected to the three second branch pipelines. The three second branch pipelines are respectively connected to the membrane separation device, the permeate pressurization device, and the pressure swing adsorption device. The second detection unit is located on the second main pipeline.

[0030] A second flow control valve is installed on each of the second branch pipelines. The second flow control valve is communicatively connected to the control device. The control device controls the opening and closing of the second flow control valve according to the detection result of the second detection unit.

[0031] In some embodiments of this application, the crude helium storage and reprocessing system for cryogenic helium extraction processes further includes:

[0032] A recovery device, which is connected to a membrane separation device, is used to recover Ne gas separated by the membrane separation device.

[0033] This application also provides a remelting control method for the above-mentioned crude helium storage and remelting system for cryogenic helium extraction processes, comprising:

[0034] Set a first concentration threshold, a second concentration threshold, a third concentration threshold, and a first pressure threshold;

[0035] Acquire the concentration data of methane and carbon dioxide in the crude helium gas at the outlet of the pressure swing adsorption unit, and the pressure data and Ne gas concentration data of the crude helium gas at the outlet of the second storage tank group;

[0036] The methane concentration data is compared with the first concentration threshold, and the carbon dioxide concentration data is compared with the second concentration threshold;

[0037] Determine whether the methane concentration data is greater than the first concentration threshold, and whether the carbon dioxide concentration data is greater than the second concentration threshold;

[0038] If at least one of the judgment results is yes, then the crude helium gas is controlled to enter the unloading device; otherwise, it enters the cryogenic adsorption device.

[0039] The Ne gas concentration data is compared with the second concentration threshold to determine whether the Ne gas concentration data is greater than the third concentration threshold. If so, the crude helium gas is controlled to enter the membrane separation device, and then the crude helium gas separated by the membrane separation device is controlled to enter the permeate pressurization device and the pressure swing adsorption device in sequence.

[0040] Otherwise, the pressure data is compared with the first pressure threshold to determine whether the pressure data is greater than the first pressure threshold. If it is greater, the crude helium gas is controlled to enter the pressure swing adsorption device. If it is less, the crude helium gas is controlled to enter the permeate gas pressurization device and the pressure swing adsorption device in sequence.

[0041] This application also provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to perform the steps of the method described above.

[0042] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0043] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described above.

[0044] Compared to existing technologies, the crude helium storage and reprocessing system for cryogenic helium extraction provided in this application effectively prevents high-concentration impurities from entering the cryogenic adsorption unit by setting up a first detection unit at the outlet of the pressure swing adsorption unit to monitor the concentration of methane and carbon dioxide in the crude helium. This avoids equipment freezing and blockage caused by condensation. A second detection unit is located at the outlet of the second storage tank group to further monitor the Ne gas concentration and pressure. Based on these parameters, the control system can dynamically adjust the crude helium reprocessing path to ensure that only gases meeting the standards are sent to the next stage of processing. This significantly improves the quality of the crude helium, reduces the processing pressure for subsequent refined helium production, and helps improve the quality and production efficiency of helium in the cryogenic helium extraction process. Attached Figure Description

[0045] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0046] Figure 1 A schematic diagram of the structure of a crude helium storage and reprocessing system for cryogenic helium extraction process, according to an embodiment of this application, is shown.

[0047] Figure 2 A flowchart illustrating the remelting control method of an embodiment of this application is shown schematically.

[0048] Explanation of icon numbers:

[0049] 1. Membrane separation device; 2. Permeate gas booster device; 3. Pressure swing adsorption device; 301. Adsorption tower; 4. Low temperature adsorption device; 5. First storage tank group; 6. Unloading device; 7. Second storage tank group; 8. First detection unit; 9. Second detection unit; 10. First remelting loop; 11. Second remelting loop; 12. Third remelting loop; 13. First flow control valve; 14. Second flow control valve. Detailed Implementation

[0050] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0051] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0052] In the production process of extracting helium from natural gas, the raw gas must undergo a series of pretreatment steps, followed by adsorption by a pressure swing adsorption (PSA) skid to obtain crude helium. Qualified crude helium needs to be transported to the inlet of a dehydrogenation and dehydration skid for further purification. However, the impurity content of the crude helium fluctuates significantly, containing various impurities such as methane, carbon dioxide, and neon. Since the dehydrogenation and dehydration skid is not capable of handling these gases with extremely high impurity content, if improperly treated crude helium is directly introduced into the dehydrogenation and dehydration skid for purification, impurities such as methane and carbon dioxide will be mixed into the helium, ultimately resulting in substandard refined helium.

[0053] In existing technologies, cryogenic adsorption devices are typically used to adsorb small amounts of methane and carbon dioxide from crude helium. However, the saturated vapor pressure of carbon dioxide and methane drops sharply at low temperatures. Once the carbon dioxide and methane content at the inlet of the cryogenic adsorption device exceeds the device's processing limit, these gases easily reach saturation and condense under the low-temperature conditions, forming liquid or even solid substances. Since the channels and pores of the adsorbent inside the cryogenic adsorption device are relatively narrow, the condensed substances easily adhere to the inner wall of the device and the surface of the adsorbent, gradually accumulating over time and eventually clogging the channels and pores, causing freezing blockage. This not only severely affects the normal operation of the cryogenic adsorption device but also greatly reduces the helium purification efficiency and affects the quality of the helium.

[0054] In view of this, this application proposes a crude helium storage and refining system for cryogenic helium extraction processes, which can effectively ensure the safety and quality of the helium production process through multi-parameter collaborative control and a staged refining strategy.

[0055] Example 1

[0056] This application provides a crude helium storage and reprocessing system for cryogenic helium extraction processes, such as... Figure 1 As shown, the system includes: a membrane separation device 1, a permeate pressurization device 2, a pressure swing adsorption (PSA) device 3, a cryogenic adsorption (CSA) device 4, and a first storage tank group 5 connected in sequence; an unloading device 6, which, along with the CSA device 4, is connected to the outlet of the PSA device 3; a second storage tank group 7, whose inlet is connected to the unloading device 6; a first detection unit 8, located at the outlet of the PSA device 3, for detecting the concentrations of methane and carbon dioxide in the crude helium gas; a second detection unit 9, located at the outlet of the second storage tank group 7, for detecting the pressure of the crude helium gas and the Ne gas concentration; a first remelting loop 10, connected to the outlet of the second storage tank group 7 and the inlet of the PSA device 3; a second remelting loop 11, connected to the outlet of the second storage tank group 7 and the inlet of the permeate pressurization device 2; and a third remelting loop 12, connected to the outlet of the second storage tank group 7 and the membrane separation device 1. An inlet; a control device, which is communicatively connected to the first detection unit 8, controls the crude helium gas to enter the cryogenic adsorption device 4 or the unloading device 6 according to the detection results of the first detection unit 8; wherein, if the first detection unit 8 detects that the methane concentration in the crude helium gas reaches a first concentration threshold and / or the carbon dioxide concentration reaches a second concentration threshold, the control device controls the crude helium gas to enter the unloading device 6; the control device is communicatively connected to the second detection unit 9, and controls the crude helium gas to enter one of the first remelting loop 10, the first remelting loop 10, and the second remelting loop 11 according to the detection results of the second detection unit 9; wherein, the control device determines whether the Ne gas concentration in the crude helium gas reaches a third concentration threshold, and if so, the control device controls the crude helium gas in the second storage tank group 7 to enter the third remelting loop 12; if not, the control device further determines whether the crude helium gas pressure is lower than a first pressure threshold, and if so, the control device controls the crude helium gas in the second storage tank group 7 to enter the second remelting loop 11.

[0057] The feed gas enters membrane separation unit 1, where the selective permeation characteristics of the membrane initially separate some impurity gases, reducing the impurity content in the crude helium gas. Subsequently, the permeate gas after membrane separation enters permeate gas pressurization unit 2, where the gas pressure is increased to prepare for subsequent processing in pressure swing adsorption unit 3. In pressure swing adsorption unit 3, based on the difference in the adsorption capacity of the adsorbent for gases under different pressures, impurities in the crude helium gas are further removed, achieving preliminary purification of the crude helium gas.

[0058] At the outlet of the pressure swing adsorption (PSA) unit 3, the first detection unit 8 continuously monitors the concentrations of methane and carbon dioxide in the crude helium gas. When the methane concentration reaches the first concentration threshold, or the carbon dioxide concentration reaches the second concentration threshold, or both exceed the threshold simultaneously, the control device receives a signal from the first detection unit 8 and quickly controls the valve to direct the crude helium gas to the unloading device 6. If neither the methane nor the carbon dioxide concentration exceeds the threshold, the crude helium gas smoothly enters the cryogenic adsorption unit 4. Inside the cryogenic adsorption unit 4, the crude helium gas is further purified, concentrated, or dried by the selective adsorption of gas molecules by the adsorbent under cryogenic conditions. The purified helium gas is then stored in the first storage tank group 5.

[0059] The crude helium entering the unloading device 6 is stored in the second storage tank group 7. The unloading device 6 is used to pressurize or depressurize the crude helium at the outlet of the pressure swing adsorption unit 3 to meet the storage conditions of the second storage tank group 7. The second detection unit 9 monitors the pressure of the crude helium and the Ne concentration at the outlet of the second storage tank group 7 in real time. If the Ne concentration reaches the third concentration threshold, the control device controls the relevant valves to allow the crude helium to enter the third recycling loop 12 and return to the inlet of the membrane separation unit 1 to undergo the entire processing flow again to reduce the Ne content. If the Ne concentration does not exceed the standard, the control device then judges the crude helium pressure. If the crude helium pressure is higher than or equal to the first pressure threshold, the crude helium pressure meets the pressure of the pressure swing adsorption unit 3, and the crude helium can directly enter the pressure swing adsorption unit 3 for re-adsorption without pressurization. If the pressure is lower than the first pressure threshold, the control device controls the crude helium to enter the second recycling loop 11 and return to the inlet of the permeate pressurization unit 2. Through re-pressurization and subsequent processing, the pressure of the crude helium is increased to meet the production requirements.

[0060] The storage and remelting system provided in this application has significant advantages. Regarding Ne gas recovery, it successfully achieves effective recovery of Ne gas. In terms of pressure control, it adopts an innovative on-demand pressurization method, pressurizing only the crude helium gas with insufficient pressure, avoiding unnecessary energy consumption. This not only improves remelting efficiency but also significantly reduces the overall system energy consumption. From the perspective of equipment protection and production process, the system effectively prevents freezing and blockage of the cryogenic adsorption device 4, ensuring its normal operation. Simultaneously, without interfering with the normal crude helium purification process, it significantly improves the quality of crude helium, reducing the processing pressure for subsequent refined helium production and contributing to improved refined helium quality and production efficiency in the cryogenic helium extraction process.

[0061] In some embodiments, the crude helium storage and reprocessing system for cryogenic helium extraction further includes: a third detection unit connected to the pressure swing adsorption device 3 for detecting the pressure inside the pressure swing adsorption device 3; and a control device communicatively connected to the third detection unit, wherein the pressure value inside the pressure swing adsorption device 3 detected by the third detection unit is used as a first pressure threshold.

[0062] A pressure sensor, as the core component of the third detection unit, is installed at key pressure monitoring points inside the pressure swing adsorption (PSA) device 3, such as near the inlet or outlet, to ensure accurate acquisition of the device's internal pressure. The third detection unit is connected to the control device via shielded cables or a wireless network to ensure stable data transmission and reduce the impact of external interference on the accuracy of the pressure data.

[0063] The third detection unit continuously collects internal pressure data from the pressure swing adsorption device 3, transmitting the collected pressure values ​​to the control device at a set frequency, such as once per minute. The control device receives this data in real time and sets the latest received pressure value as the first pressure threshold, which is used as the standard for subsequent judgment of the crude helium pressure.

[0064] When the second detection unit 9 detects the crude helium pressure at the outlet of the second storage tank group 7, it transmits the data to the control device. The control device immediately compares this pressure value with the first pressure threshold provided by the third detection unit. If the crude helium pressure is lower than the first pressure threshold, the control device, according to preset logic, sends a signal to the relevant valve control components to open the valve leading to the second remelting loop 11, guiding the crude helium into the inlet of the permeate pressurization device 2 for further pressurization. If the crude helium pressure is higher than the first pressure threshold, it sends a signal to the relevant valve control components to open the valve leading to the first remelting loop 10, guiding the crude helium directly into the pressure swing adsorption device 3 for processing.

[0065] By using a third detection unit to dynamically acquire pressure values ​​as the first pressure threshold, the system can automatically adjust the judgment criteria based on the real-time operating status of the pressure swing adsorption device 3. For example, when fluctuations in the composition of the raw gas or changes in the processing volume cause changes in the internal pressure of the device, the first pressure threshold changes accordingly, ensuring that the system always maintains optimal operating conditions and improving its overall dynamic adaptability.

[0066] Setting a first pressure threshold based on real-time pressure data significantly improves the scientific rigor of the judgment regarding the pressurization boost for crude helium reprocessing. This avoids potential misjudgments that might occur with a fixed threshold. For example, if the internal pressure of the pressure swing adsorption unit 3 drops due to special circumstances, a fixed threshold might incorrectly guide crude helium that doesn't need reprocessing into the reprocessing process, resulting in resource waste, or prevent crude helium from being reprocessed altogether, reducing reprocessing efficiency. A dynamic threshold ensures that reprocessing is only initiated when the crude helium pressure is truly below the unit's current required reasonable pressure, thus optimizing the reprocessing decision-making process.

[0067] In some embodiments, during the remelting process, the second detection unit 9 monitors the pressure of the crude helium gas at the outlet of the second storage tank group 7 in real time. At the initial stage of remelting, when the second detection unit 9 detects that the pressure of the crude helium gas exceeds a first pressure threshold, the control device operates the relevant valves to guide the crude helium gas through the first remelting loop 10 into the pressure swing adsorption (PSA) device 3. However, as the remelting continues, the gas in the second storage tank group 7 decreases, causing the pressure inside the tank to gradually decrease, which in turn lowers the pressure at the outlet of the second storage tank group 7. When the outlet pressure drops to a level that fails to meet the first pressure threshold required by the PSA device 3, the control device responds quickly by closing the first remelting loop 10 and simultaneously opening the second remelting loop 11. This ensures that all remaining crude helium gas in the second storage tank group 7 can smoothly enter the remelting process, guaranteeing full utilization of resources and the integrity of the remelting operation.

[0068] By directly feeding the crude helium gas with the required pressure into the pressure swing adsorption (PSA) unit 3 through the first reprocessing loop 10 at the initial stage of reprocessing, unnecessary pressurization steps are reduced. This allows the qualified crude helium gas to quickly enter the next processing step, greatly improving reprocessing efficiency and saving time costs. When the outlet pressure of the second storage tank group 7 decreases, the system promptly switches to the second reprocessing loop 11, ensuring that the remaining crude helium gas in the tank can also be reprocessed. This avoids resource waste caused by some crude helium gas being unable to be reprocessed due to pressure changes, thus maximizing resource utilization.

[0069] In some embodiments, the pressure swing adsorption device 3 has multiple adsorption towers 301 arranged in parallel, and a third detection unit detects the pressure value in each adsorption tower 301 respectively; a first remelting loop 10 is connected to multiple adsorption towers 301 respectively, and a control device controls crude helium gas to enter one of the adsorption towers 301 through the first remelting loop 10 according to the pressure result detected by the third detection unit; wherein, the lowest pressure value among the multiple adsorption towers 301 detected by the third detection unit is used as the first pressure threshold.

[0070] In each adsorption tower 301 of the pressure swing adsorption device 3, high-precision pressure sensors are installed near the inlet and outlet as detection components of the third detection unit. These pressure sensors are connected to the control device through dedicated signal transmission lines to ensure the stability and accuracy of data transmission.

[0071] The first refining loop 10 is designed as a branch structure, with each branch connected to the inlet of each adsorption tower 301. The flow direction of crude helium is controlled by electric valves installed on the branch pipes, which can be remotely controlled by a control device.

[0072] The third detection unit collects the pressure value inside each adsorption tower 301 in real time. Every certain time interval (e.g., 10 minutes), the collected pressure data of all adsorption towers 301 are transmitted to the control device. After receiving the data, the control device compares and analyzes the pressure values ​​of multiple adsorption towers 301, selects the lowest pressure value, and sets the lowest pressure value as the first pressure threshold.

[0073] When the second detection unit 9 detects the pressure data of the crude helium gas at the outlet of the second storage tank group 7 and transmits it to the control device, the control device compares the crude helium gas pressure with a first pressure threshold. If the crude helium gas pressure is higher than the first pressure threshold, the control device will send an opening signal to the electric valve on the branch pipe of the adsorption tower 301 corresponding to the first pressure threshold according to the preset logic, so that the crude helium gas enters the adsorption tower 301 through the first remelting loop 10 for further processing.

[0074] By introducing crude helium gas into the adsorption tower 301 with the lowest pressure, the relatively low pressure environment within the adsorption tower 301 can be fully utilized. This allows as much crude helium gas as possible to enter the pressure swing adsorption unit 3 for processing through the first recycle loop 10. This method avoids blindly introducing crude helium gas into each adsorption tower 301, reducing unnecessary pressurization steps and energy consumption. Furthermore, by enabling more qualified crude helium gas to quickly enter the next processing step, the recycle efficiency is greatly improved, saving time and costs. Simultaneously, other adsorption towers 301 can also purify the raw material gas, thus significantly improving the quality and purification efficiency of the crude helium gas without interfering with the normal crude helium purification process.

[0075] In some embodiments, the permeate gas booster device 2 is connected to multiple adsorption towers 301 respectively, and the permeate gas booster device 2 is communicatively connected to the control device. The permeate gas booster device 2 is a multi-stage booster pump structure, and the control device controls the boosting ratio of the permeate gas booster device 2 according to a first pressure threshold.

[0076] A pipeline connection is established between the permeate gas booster device 2 and multiple adsorption towers 301 to ensure that the gas output from the permeate gas booster device 2 can smoothly enter each adsorption tower 301. Simultaneously, a communication line is used to connect the permeate gas booster device 2 to a control device to achieve data exchange and transmission. The permeate gas booster device 2 adopts a multi-stage booster pump structure, with each stage of the booster pump connected sequentially via pipelines. Each stage of the booster pump is equipped with corresponding control valves and sensors for monitoring and regulating gas flow and pressure.

[0077] The third detection unit continuously monitors the pressure within each adsorption tower 301 and transmits the data to the control device. The control device calculates a first pressure threshold (such as the lowest pressure value among the multiple adsorption towers 301) based on this pressure data. The control device adjusts the pressure ratio of the permeate gas booster device 2 according to the first pressure threshold. When crude helium needs to be pressurized by being transported to the permeate gas booster device 2 through the second remelting loop 11, unnecessary over-pressurization is avoided by increasing the crude helium pressure to the minimum first pressure threshold using the permeate gas booster device 2, thus reducing energy consumption.

[0078] In some embodiments, the crude helium storage and reprocessing system for cryogenic helium extraction further includes: a first pipeline, comprising a first main pipeline and a pair of first branch pipelines, one end of the first main pipeline being connected to a pressure swing adsorption device 3, and the other end being connected to the pair of first branch pipelines, the pair of first branch pipelines being respectively connected to a cryogenic adsorption device 4 and an unloading device 6, and a first detection unit 8 being disposed on the first main pipeline; and a first flow control valve 13, wherein a first flow control valve 13 is respectively disposed on the pair of first branch pipelines, the first flow control valve 13 being communicatively connected to a control device, and the control device controlling the opening and closing of the first flow control valve 13 according to the detection result of the first detection unit 8.

[0079] A first main pipeline is laid, with one end tightly connected to the outlet of the pressure swing adsorption (PSA) unit 3 to ensure smooth flow of the crude helium gas after PSA. At the other end of the first main pipeline, a pair of first branch pipelines branch off. One branch pipeline leads to the cryogenic adsorption unit 4, and the other to the unloading unit 6. A first detection unit 8 is precisely installed on the first main pipeline to ensure accurate detection of the concentrations of methane and carbon dioxide in the crude helium gas flowing through it. For each of the first branch pipelines, a first flow control valve 13 is installed. These control valves are connected to a control device via communication lines, ensuring real-time control by the control device.

[0080] The first detection unit 8 continuously monitors the concentrations of methane and carbon dioxide in the crude helium gas and transmits the data to the control device in real time. When the methane concentration reaches the first concentration threshold and / or the carbon dioxide concentration reaches the second concentration threshold, the control device immediately issues a command to close the first flow control valve 13 on the branch pipeline leading to the cryogenic adsorption unit 4, and simultaneously open the first flow control valve 13 on the branch pipeline leading to the unloading device 6. In this way, the crude helium gas will be directed to the unloading device 6, preventing high-concentration impurities from entering the cryogenic adsorption unit 4.

[0081] Conversely, if the first detection unit 8 detects that the concentrations of methane and carbon dioxide in the crude helium gas are within the standard limits, the control device will open the first flow control valve 13 on the branch pipeline leading to the cryogenic adsorption device 4, and close the first flow control valve 13 on the branch pipeline leading to the unloading device 6, so that the crude helium gas can smoothly enter the cryogenic adsorption device 4 for the next step of processing.

[0082] Through the coordinated operation of the first detection unit 8 and the first flow control valve 13, the crude helium gas can be precisely diverted to the appropriate device based on the actual concentration of impurities in the crude helium gas. This effectively prevents high-concentration impurity gases from entering the cryogenic adsorption device 4, preventing freezing and blockage caused by excessive impurities, protecting the normal operation of the cryogenic adsorption device 4, and extending the equipment's service life. The control device automatically controls the opening and closing of the first flow control valve 13 based on the detection data, realizing the automation of the crude helium gas diversion process. This reduces manual intervention, lowers the risk of human error, and improves the reliability and stability of the system operation.

[0083] In some embodiments, the crude helium storage and reprocessing system for cryogenic helium extraction further includes: a second pipeline, comprising a second main pipeline and three second branch pipelines, one end of the second main pipeline being connected to the outlet of the second storage tank group 7, and the other end being connected to the three second branch pipelines, the three second branch pipelines being respectively connected to the membrane separation device 1, the permeate pressurization device 2, and the pressure swing adsorption device 3, and a second detection unit 9 being disposed on the second main pipeline; and a second flow control valve 14, each second branch pipeline being provided with a second flow control valve 14, the second flow control valve 14 being communicatively connected to a control device, and the control device controlling the opening and closing of the second flow control valve 14 according to the detection result of the second detection unit 9.

[0084] A second main pipeline is constructed, with one end securely connected to the outlet of the second storage tank group 7 to ensure the smooth flow of crude helium gas from the second storage tank group 7. At the other end of the second main pipeline, three second branch pipelines branch off. These three branch pipelines are respectively connected to the membrane separation unit 1, the permeate pressurization unit 2, and the pressure swing adsorption unit 3, forming the first remelting loop 10, the second remelting loop 11, and the third remelting loop 12. A second detection unit 9 is precisely installed on the second main pipeline to accurately detect the pressure of the crude helium gas flowing through it and the Ne gas concentration. A second flow control valve 14 is installed on each second branch pipeline. These control valves are connected to the control device via communication lines to ensure that the control device can operate them in real time.

[0085] The second detection unit 9 continuously monitors the pressure of the crude helium gas and the Ne gas concentration, and transmits the data to the control device in real time. When the Ne gas concentration in the crude helium gas reaches the third concentration threshold, the control device immediately issues a command to close the second flow control valve 14 on the branch pipeline leading to the permeate pressurization device 2 and the pressure swing adsorption device 3, while simultaneously opening the second flow control valve 14 on the branch pipeline leading to the membrane separation device 1. In this way, the crude helium gas is directed to the membrane separation device 1, where the Ne gas concentration is reduced through repeated membrane separation treatment.

[0086] If the Ne gas concentration is detected to be within the standard range, the control device then determines the crude helium gas pressure. When the pressure is lower than the first pressure threshold, the control device closes the second flow control valve 14 on the branch line leading to the membrane separation unit 1 and the pressure swing adsorption unit 3, and opens the second flow control valve 14 on the branch line leading to the permeate gas booster unit 2. The crude helium gas then enters the permeate gas booster unit 2, where the pressure is increased again through pressurization.

[0087] If the crude helium pressure is normal and the Ne concentration does not exceed the standard, the control device closes the second flow control valve 14 on the branch pipeline leading to the membrane separation device 1 and the permeate pressurization device 2, and opens the second flow control valve 14 on the branch pipeline leading to the pressure swing adsorption device 3, allowing the crude helium to enter the pressure swing adsorption device 3 for further processing.

[0088] Based on the detection results of the second detection unit 9, the flow direction of crude helium is precisely controlled by the second flow control valve 14, achieving targeted reprocessing. For crude helium with excessive Ne concentration, it is guided into the membrane separation device 1, effectively reducing the Ne content and improving the purity of the helium. For crude helium with insufficient pressure, it is directed into the permeate gas pressurization device 2 to increase the pressure, ensuring the smooth progress of subsequent processing steps and ultimately guaranteeing the quality of refined helium.

[0089] The rapid and accurate flow diversion mechanism reduces equipment failures and production downtime caused by crude helium state mismatch. By automatically controlling the opening and closing of the second flow control valve 14 based on detection data, the control device automates the selection of the crude helium reprocessing path. Operators only need to focus on the overall system operation status, eliminating the need for frequent manual intervention in the crude helium flow direction, significantly improving work efficiency and enabling the system to respond more quickly and accurately to various operating conditions.

[0090] In some embodiments, the crude helium storage and refining system for cryogenic helium extraction further includes a recovery device connected to the membrane separation device 1 for recovering Ne gas separated by the membrane separation device 1.

[0091] A dedicated pipeline is laid at the gas separation outlet of membrane separator 1, connecting it to a recovery device. When membrane separator 1 starts operating and separates Ne gas from the crude helium gas, the Ne gas flows through the connecting pipeline to the recovery device. The recovery device effectively recovers the Ne gas separated by membrane separator 1, preventing waste. Ne gas, as a valuable rare gas, has wide applications in electronics, optics, and other fields. Recovery not only improves the comprehensive utilization rate of resources in the helium production process but also allows for the secondary sale or application of the recovered Ne gas to other related industries, creating additional economic benefits for the enterprise.

[0092] In some embodiments, the first detection unit 8 may include two component detection devices, such as a gas chromatograph or mass spectrometer, for detecting methane and carbon dioxide gas components. The second detection unit 9 may include a component detection device and a pressure detection device, wherein the pressure detection device may be a pressure gauge or a pressure sensor. The component detection device is used to detect the Ne gas component, and the pressure detection device is used to detect the gas pressure. The third detection unit may include multiple pressure detection devices.

[0093] Example 2

[0094] This application provides a remelting control method for the crude helium storage and remelting system of the cryogenic helium extraction process in Embodiment 1, such as... Figure 2 As shown, it includes:

[0095] S1. Set the first concentration threshold, the second concentration threshold, the third concentration threshold, and the first pressure threshold; acquire the concentration data of methane and carbon dioxide in the crude helium gas at the outlet of the pressure swing adsorption device 3, and the pressure data and Ne gas concentration data of the crude helium gas at the outlet of the second storage tank group 7.

[0096] S2. Compare the methane concentration data with the first concentration threshold and the carbon dioxide concentration data with the second concentration threshold; determine whether the methane concentration data is greater than the first concentration threshold and whether the carbon dioxide concentration data is greater than the second concentration threshold.

[0097] S201. If at least one of the judgment results is yes, then control the crude helium gas to enter the unloading device 6;

[0098] S202, Otherwise proceed to the low-temperature adsorption device 4;

[0099] S3. Compare the Ne gas concentration data with the second concentration threshold to determine whether the Ne gas concentration data is greater than the third concentration threshold.

[0100] S301. If so, then control the crude helium gas to enter the membrane separation device 1, and then control the crude helium gas separated by the membrane separation device 1 to enter the permeate pressurization device 2 and the pressure swing adsorption device 3 in sequence.

[0101] S302. If not, compare the pressure data with the first pressure threshold to determine whether the pressure data is greater than the first pressure threshold.

[0102] S302a, If the value is greater than 3, control the crude helium gas to enter the pressure swing adsorption device 3;

[0103] S302b, if the value is less than the specified value, the crude helium gas is controlled to enter the permeate gas pressurization device 2 and the pressure swing adsorption device 3 in sequence.

[0104] Specifically, S1 includes: in the system control device, a first concentration threshold (for methane), a second concentration threshold (for carbon dioxide), a third concentration threshold (for Ne gas), and a first pressure threshold can be preset. These thresholds can be set based on in-depth research into the helium production process and precise assessment of the processing capacity of each device. For example, the first and second concentration thresholds are determined based on the tolerance of the cryogenic adsorption device 4 to methane and carbon dioxide, and the third concentration threshold and the first pressure threshold are determined based on the processing requirements of the membrane separation device 1, the permeate pressurization device 2, and the pressure swing adsorption device 3 for Ne gas and pressure.

[0105] The first detection unit 8 collects real-time concentration data of methane and carbon dioxide in the crude helium gas at the outlet of the pressure swing adsorption unit 3, while the second detection unit 9 acquires pressure data of the crude helium gas and Ne gas concentration data at the outlet of the second storage tank group 7. These detection units transmit the collected data to the control device in real time.

[0106] S2 includes: after receiving the data, the control device immediately compares the methane concentration data with the first concentration threshold and the carbon dioxide concentration data with the second concentration threshold, and then makes a judgment.

[0107] S201 includes: if the first detection unit 8 detects that the methane concentration or carbon dioxide concentration exceeds the standard, or both the methane concentration and carbon dioxide concentration exceed the standard, the control device sends an opening signal to the first flow control valve 13 on the branch pipeline leading to the unloading device 6, and at the same time closes the first flow control valve 13 on the branch pipeline leading to the low-temperature adsorption device 4.

[0108] S202 includes: if the concentrations of methane and carbon dioxide do not exceed the standard, the crude helium gas enters the cryogenic adsorption device 4 through the first flow control valve 13 for processing.

[0109] S3 includes: for the crude helium gas that enters the second storage tank group 7 after being processed by the unloading device 6, the second detection unit 9 detects its Ne gas concentration and pressure. The control device compares the Ne gas concentration data with a third concentration threshold and then makes a judgment.

[0110] S301 includes: if the Ne gas concentration is greater than the third concentration threshold, the control device controls the second flow control valve 14 to allow crude helium gas to enter the membrane separation device 1. In the membrane separation device 1, after the crude helium gas is processed, it enters the permeate pressurization device 2 and the pressure swing adsorption device 3 in sequence. After completing one reprocessing process, the system executes step S1 again to reacquire data and make a judgment.

[0111] S302 includes: if the Ne gas concentration does not exceed the standard, the control device then compares the pressure data with the first pressure threshold and then makes a judgment.

[0112] S302a includes: if the pressure is greater than the first pressure threshold, the control device controls the crude helium gas to directly enter the pressure swing adsorption device 3 through the second flow control valve 14. After completing one remelting process, the system executes step S1 again to reacquire data and make a judgment.

[0113] S302b includes: if the pressure is less than a first pressure threshold, the control device controls the crude helium gas to sequentially enter the permeate gas pressurization device 2 and the pressure swing adsorption device 3. After completing one remelting process, the system executes step S1 again to reacquire data and make a judgment.

[0114] By precisely setting concentration and pressure thresholds and comparing and judging various parameters in crude helium in real time, the flow direction and processing path of crude helium can be accurately controlled. This effectively removes impurities such as methane, carbon dioxide, and Ne, improving the purity of the helium. This reprocessing control method achieves efficient reprocessing of crude helium through multiple cycles of judgment and processing. For crude helium in different states, the most suitable reprocessing path can be selected, such as targeted treatment for cases of excessive Ne concentration or insufficient pressure. This not only improves the helium recovery rate but also fully utilizes the processing capacity of each unit, reducing resource waste and lowering production costs. Through a reasonable diversion and reprocessing mechanism, damage to equipment caused by excessive impurity concentration or abnormal pressure is avoided, and high concentrations of methane and carbon dioxide are prevented from entering the cryogenic adsorption unit 4, causing freezing and blockage, thus protecting the normal operation of the equipment. Simultaneously, through the cyclical processing and parameter monitoring of crude helium, the stable operation of the entire helium storage and reprocessing system is ensured, reducing the risk of production interruption and improving production efficiency.

[0115] In some embodiments, the remelting control method further includes: acquiring internal pressure data of the pressure swing adsorption device 3, and transmitting the acquired pressure values ​​to a control device. The control device receives these data in real time and sets the latest received pressure value as a first pressure threshold.

[0116] By using a third detection unit to dynamically acquire pressure values ​​as the first pressure threshold, the system can automatically adjust the judgment criteria based on the real-time operating status of the pressure swing adsorption device 3. This method enables the system to always maintain the best operating state and improves the overall dynamic adaptability.

[0117] In some embodiments, the reprocessing control method further includes: in the initial stage of reprocessing, when the pressure of the crude helium gas is detected to exceed a first pressure threshold, the control device first controls the crude helium gas to enter the pressure swing adsorption device 3 via the first reprocessing loop 10. The pressure value of the crude helium gas continues to be monitored in real time. When the pressure value of the crude helium gas drops below the first pressure threshold, the control device controls the closure of the first reprocessing loop 10 and simultaneously opens the second reprocessing loop 11. By directly sending the crude helium gas with the required pressure into the pressure swing adsorption device 3 via the first reprocessing loop 10 in the initial stage of reprocessing, unnecessary pressurization steps are reduced, allowing the qualified crude helium gas to quickly enter the next processing step, greatly improving reprocessing efficiency and saving time costs. When the outlet pressure of the second storage tank group 7 decreases, the system promptly switches to the second reprocessing loop 11, ensuring that the remaining crude helium gas in the tank can also be reprocessed, avoiding resource waste caused by some crude helium gas being unable to be reprocessed due to pressure changes, and maximizing resource utilization.

[0118] In some embodiments, the pressure value within each adsorption tower 301 of the pressure swing adsorption (PSA) device 3 is acquired, and the collected pressure data of all adsorption towers 301 is transmitted to the control device. Upon receiving the data, the control device compares and analyzes the pressure values ​​of multiple adsorption towers 301, selects the lowest pressure value, and sets this lowest pressure value as the first pressure threshold. By introducing crude helium gas into the adsorption tower 301 with the lowest pressure, the relatively low pressure environment within that adsorption tower 301 can be fully utilized. This allows as much crude helium gas as possible to enter the PSA device 3 for processing through the first recycle loop 10. This method avoids blindly introducing crude helium gas into each adsorption tower 301, reduces unnecessary pressurization steps, reduces energy consumption, and significantly improves recycle efficiency and saves time costs by enabling more qualified crude helium gas to quickly enter the next processing step.

[0119] In some embodiments, the control device adjusts the pressure ratio of the permeate gas booster device 2 according to a first pressure threshold. When crude helium needs to be supplied to the permeate gas booster device 2 for pressurization through the second remelting loop 11, the crude helium can be increased to the minimum first pressure threshold by the permeate gas booster device 2, avoiding unnecessary over-pressurization and reducing energy consumption.

[0120] This application also provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to perform the above-described functions. Figure 2 The steps of the method shown.

[0121] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described functionality. Figure 2 The steps of the method shown.

[0122] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described functionality. Figure 2 The steps of the method shown.

[0123] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this application is not directed to any particular programming language. It should be understood that the content of this application described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of this application.

[0124] In addition, the memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0125] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0126] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0127] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0128] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0129] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0130] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0131] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0132] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0133] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0134] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A crude helium storage and reprocessing system for cryogenic helium extraction processes, characterized in that, include: The membrane separation unit, the permeate pressurization unit, the pressure swing adsorption unit, the low temperature adsorption unit, and the first storage tank group are connected in sequence. An unloading device, which, along with the low-temperature adsorption device, is connected to the outlet of the pressure swing adsorption device; A second storage tank group, the inlet of which is connected to the unloading device; The first detection unit is located at the outlet of the pressure swing adsorption device and is used to detect the concentrations of methane and carbon dioxide in the crude helium gas. The second detection unit is located at the outlet of the second storage tank group and is used to detect the pressure of the crude helium and the Ne concentration. The first remelting circuit is connected to the outlet of the second storage tank group and the inlet of the pressure swing adsorption device. The second refining circuit is connected to the outlet of the second storage tank group and the inlet of the permeate pressurization device. The third remelting loop is connected to the outlet of the second storage tank group and the inlet of the membrane separation device; A control device is communicatively connected to the first detection unit. The control device is used to control the crude helium gas to enter the cryogenic adsorption device or the unloading device according to the detection result of the first detection unit. If the first detection unit detects that the methane concentration in the crude helium gas reaches a first concentration threshold and / or the carbon dioxide concentration reaches a second concentration threshold, the control device controls the crude helium gas to enter the unloading device. The control device is communicatively connected to the second detection unit. The control device is used to control the crude helium gas to enter one of the first remelting loop, the first remelting loop, and the second remelting loop according to the detection result of the second detection unit. The control device determines whether the Ne gas concentration in the crude helium gas reaches a third concentration threshold. If so, the control device controls the crude helium gas in the second storage tank group to enter the third remelting loop. If not, the control device further determines whether the crude helium gas pressure is lower than a first pressure threshold. If so, the control device controls the crude helium gas in the second storage tank group to enter the second remelting loop.

2. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 1, characterized in that, Also includes: The third detection unit is connected to the pressure swing adsorption device and is used to detect the pressure inside the pressure swing adsorption device. The control device is communicatively connected to the third detection unit, and the pressure value inside the pressure swing adsorption device detected by the third detection unit is used as the first pressure threshold.

3. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 2, characterized in that, The pressure swing adsorption device has multiple adsorption towers, which are arranged in parallel, and the third detection unit detects the pressure value in each adsorption tower respectively. The first remelting loop is connected to multiple adsorption towers respectively, and the control device controls the crude helium gas to enter one of the adsorption towers through the first remelting loop according to the pressure result detected by the third detection unit. The lowest pressure value detected by the third detection unit in the plurality of adsorption towers is used as the first pressure threshold.

4. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 3, characterized in that, The permeate gas booster device is connected to multiple adsorption towers respectively, and the permeate gas booster device is communicatively connected to the control device. The permeate gas booster device is a multi-stage booster pump structure, and the control device controls the boosting ratio of the permeate gas booster device according to the first pressure threshold.

5. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 1, characterized in that, Also includes: The first pipeline includes a first main pipeline and a pair of first branch pipelines. One end of the first main pipeline is connected to the pressure swing adsorption device, and the other end is connected to the pair of first branch pipelines. The pair of first branch pipelines are respectively connected to the low-temperature adsorption device and the unloading device. The first detection unit is disposed on the first main pipeline. A first flow control valve is provided on each of the first branch pipelines. The first flow control valve is communicatively connected to the control device. The control device controls the opening and closing of the first flow control valve according to the detection result of the first detection unit.

6. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 1, characterized in that, Also includes: The second pipeline includes a second main pipeline and three second branch pipelines. One end of the second main pipeline is connected to the outlet of the second storage tank group, and the other end is connected to the three second branch pipelines. The three second branch pipelines are respectively connected to the membrane separation device, the permeate pressurization device, and the pressure swing adsorption device. The second detection unit is located on the second main pipeline. A second flow control valve is installed on each of the second branch pipelines. The second flow control valve is communicatively connected to the control device. The control device controls the opening and closing of the second flow control valve according to the detection result of the second detection unit.

7. The crude helium storage and reprocessing system for cryogenic helium extraction as described in claim 1, characterized in that, Also includes: A recovery device, which is connected to a membrane separation device, is used to recover Ne gas separated by the membrane separation device.

8. A reprocessing control method, used in any one of claims 1-7 for the crude helium storage and reprocessing system of cryogenic helium extraction process, characterized in that, include: Set a first concentration threshold, a second concentration threshold, a third concentration threshold, and a first pressure threshold; Acquire the concentration data of methane and carbon dioxide in the crude helium gas at the outlet of the pressure swing adsorption unit, and the pressure data and Ne gas concentration data of the crude helium gas at the outlet of the second storage tank group; The methane concentration data is compared with the first concentration threshold, and the carbon dioxide concentration data is compared with the second concentration threshold; Determine whether the methane concentration data is greater than the first concentration threshold and whether the carbon dioxide concentration data is greater than the second concentration threshold; If at least one of the judgment results is yes, then the crude helium gas is controlled to enter the unloading device; otherwise, it enters the cryogenic adsorption device. The Ne gas concentration data is compared with the third concentration threshold to determine whether the Ne gas concentration data is greater than the third concentration threshold. If so, the crude helium gas is controlled to enter the membrane separation device, and then the crude helium gas separated by the membrane separation device is controlled to enter the permeate pressurization device and the pressure swing adsorption device in sequence. Otherwise, the pressure data is compared with the first pressure threshold to determine whether the pressure data is greater than the first pressure threshold. If it is greater, the crude helium gas is controlled to enter the pressure swing adsorption device. If it is less, the crude helium gas is controlled to enter the permeate gas pressurization device and the pressure swing adsorption device in sequence.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method of claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 8.

11. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 8.

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