Kr enrichment method, system, terminal and storage medium based on carbon molecular sieve gradient adsorption

Abstract

The application provides a Kr enrichment method and system based on carbon molecular sieve gradient adsorption, a terminal and a storage medium, relates to the technical field of Kr enrichment, and comprises the following steps: obtaining a system trigger signal; controlling a preset cooling device to cool a preset primary adsorption column based on the system trigger signal, and obtaining a cooling completion signal; controlling a preset ventilation device to introduce a preset sample gas into the column based on the cooling completion signal, and obtaining a ventilation trigger signal; obtaining a transient flow value, a krypton inlet concentration and a krypton outlet concentration based on the ventilation trigger signal; analyzing the transient flow value and a preset standard flow value to determine a pore size detection result; analyzing the krypton inlet concentration, the krypton outlet concentration and the pore size detection result to determine actual adsorption parameters; and controlling a preset primary separation module to enrich krypton according to the actual adsorption parameters. The application has the effect of ensuring efficient enrichment of krypton by carbon molecular sieve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Kr enrichment, and in particular to a Kr enrichment method, system, terminal and storage medium based on gradient adsorption of carbon molecular sieve. BACKGROUND

[0002] The Kr enrichment method based on gradient adsorption of carbon molecular sieve refers to a process of separating krypton from impurity gases through the selective adsorption characteristics of krypton by multiple layers of carbon molecular sieves with different pore sizes, aiming to achieve high-purity enrichment of Kr.

[0003] In related technologies, the Kr enrichment method based on gradient adsorption of carbon molecular sieve usually first pretreats the sample gas, then passes the pretreated gas into an adsorption device filled with gradient-pore carbon molecular sieves, allows small molecular impurity gases to quickly penetrate the molecular sieve layer under low temperature and pressure conditions, and krypton is selectively adsorbed, finally realizing the enrichment of krypton.

[0004] In the related technologies described above, the pretreated gas is passed into an adsorption device filled with gradient-pore carbon molecular sieves. However, as the use period is prolonged and the trace impurities in the sample gas accumulate, the pore size of the carbon molecular sieve will change microscopically, causing a mass transfer imbalance, which will affect the enrichment effect of krypton, and there is still room for improvement. SUMMARY

[0005] In order to ensure the efficient enrichment effect of krypton by carbon molecular sieve, the present application provides a Kr enrichment method, system, terminal and storage medium based on gradient adsorption of carbon molecular sieve.

[0006] In a first aspect, the present application provides a Kr enrichment method based on gradient adsorption of carbon molecular sieve, which adopts the following technical solution:

[0007] The Kr enrichment method based on gradient adsorption of carbon molecular sieve comprises:

[0008] Obtaining a system trigger signal;

[0009] Based on the system trigger signal, a preset cooling device is controlled to cool a preset primary adsorption column, and a cooling completion signal is obtained;

[0010] Based on the cooling completion signal, a preset air supply device is controlled to pass a preset sample gas into the column, and an air supply trigger signal is obtained;

[0011] Based on the air supply trigger signal, a transient flow value, a krypton inlet concentration and a krypton outlet concentration are obtained;

[0012] The transient flow value and a preset standard flow value are analyzed to determine a pore size detection result;

[0013] The results of krypton inlet concentration, krypton outlet concentration, and pore size detection were analyzed to determine the actual adsorption parameters;

[0014] The krypton is enriched by controlling the preset primary separation module according to the actual adsorption parameters.

[0015] By adopting the above technical solution, the cooling device is controlled to cool the primary adsorption column, thereby controlling the ventilation device to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection results are determined. Then, the actual adsorption parameters are determined by analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results. Based on the actual adsorption parameters, the primary separation module is controlled to enrich krypton, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve regardless of whether the pore size of the carbon molecular sieve changes.

[0016] Optionally, the steps of analyzing the instantaneous flow rate value and the preset standard flow rate value to determine the orifice detection result include:

[0017] Calculate the difference between the instantaneous flow rate and the standard flow rate to generate the flow rate change value;

[0018] Calculate the quotient of the change in flow rate to the standard flow rate to generate the rate of change in flow rate;

[0019] Determine whether the rate of change of flow meets the requirements of the preset standard rate of change range;

[0020] If the conditions are met, the preset result of unchanged aperture is defined as the aperture detection result;

[0021] If it does not meet the requirements, the preset aperture change result will be defined as the aperture detection result.

[0022] By adopting the above technical solution, the flow change value is generated after calculating the difference between the instantaneous flow rate and the standard flow rate. Then, the flow change rate is generated after calculating the quotient of the flow change value and the standard flow rate. When the flow change rate meets the requirements of the standard change rate range, the result of unchanged pore size is directly defined as the pore size detection result; otherwise, the result of pore size change is directly defined as the pore size detection result. Thus, the degree of change of instantaneous flow rate relative to the standard flow rate value determines whether the pore size of the carbon molecular sieve has changed, and thus determines the trend of mass transfer resistance, so as to facilitate the subsequent determination and adjustment of adsorption parameters.

[0023] Optionally, the steps of analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results to determine the actual adsorption parameters include:

[0024] Calculate the difference between the krypton import concentration and the krypton export concentration to generate the krypton concentration bias;

[0025] Calculate the quotient of the krypton concentration deviation and the krypton inlet concentration to generate the krypton adsorption efficiency;

[0026] The pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters were analyzed to determine the appropriate adjustments to the adsorption parameters.

[0027] The adsorption parameters and krypton adsorption efficiency were analyzed to determine the actual adsorption parameters.

[0028] By adopting the above technical solution, the krypton concentration deviation is generated after calculating the difference between the krypton inlet concentration and the krypton outlet concentration. The krypton adsorption efficiency is generated after calculating the quotient of the krypton concentration deviation and the krypton inlet concentration. Based on the analysis of the pore size detection results, the krypton adsorption efficiency and the standard adsorption parameters, the adsorption parameters are adjusted. Based on the analysis of the adjusted adsorption parameters and the krypton adsorption efficiency, the actual adsorption parameters are determined. This overcomes the influence of changes in the pore size of the carbon molecular sieve and competing gases, so as to achieve efficient enrichment of krypton under the most suitable adsorption parameter conditions.

[0029] Optionally, the steps for adjusting the adsorption parameters include analyzing the pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters:

[0030] The result of the aperture detection is determined to be either the preset aperture unchanged result or the preset aperture change result;

[0031] If the pore size remains constant, then the preset standard adsorption parameter is defined as the adjusted adsorption parameter.

[0032] If the result is a change in pore size, the krypton adsorption efficiency and the preset baseline adsorption efficiency are analyzed to determine the change in mass transfer resistance.

[0033] Determine the standard adsorption pressure and standard gas flow rate based on the standard adsorption parameters;

[0034] The results of mass transfer resistance variation, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate were analyzed to determine the adsorption parameters to be adjusted.

[0035] By adopting the above technical solution, when the result is determined to be a constant pore size, the standard adsorption parameter is directly defined as the adjusted adsorption parameter; when the result is determined to be a change in pore size, the change in mass transfer resistance is determined after analyzing the krypton adsorption efficiency and the baseline adsorption efficiency. Then, the adjusted adsorption parameter is determined after analyzing the change in mass transfer resistance, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate. The influence of the change in mass transfer resistance caused by the change in pore size is offset by adjusting the corresponding adsorption parameter, thus providing data support for the subsequent determination of the actual adsorption parameter.

[0036] Optionally, the steps of analyzing the krypton adsorption efficiency and a preset baseline adsorption efficiency to determine the change in mass transfer resistance include:

[0037] Determine whether the krypton adsorption efficiency is greater than the baseline adsorption efficiency;

[0038] If it is greater than the preset mass transfer smoothness result, then the mass transfer resistance change result will be defined as the result.

[0039] If it is not greater than, then the preset mass transfer limitation result is defined as the mass transfer resistance change result.

[0040] By adopting the above technical solution, when the krypton adsorption efficiency is determined to be greater than the benchmark adsorption efficiency, the smooth mass transfer result is directly defined as the change result of mass transfer resistance; if it is not greater, the restricted mass transfer result is defined as the change result of mass transfer resistance. By determining the change result of mass transfer resistance, the trend of mass transfer resistance can be determined, and the corresponding adsorption parameters can be adjusted according to the change result of mass transfer resistance, so as to facilitate the subsequent determination of actual adsorption parameters.

[0041] Optionally, the steps for adjusting adsorption parameters include analyzing the changes in mass transfer resistance, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate.

[0042] The result of the change in mass transfer resistance is determined to be either the preset result of smooth mass transfer or the preset result of limited mass transfer.

[0043] If the mass transfer is smooth, the standard gas flow rate, krypton adsorption efficiency, reference adsorption efficiency, and preset flow rate gain coefficient are analyzed to determine the adjustment of the gas flow rate.

[0044] The gas flow rate and standard adsorption pressure are correlated to generate adjusted adsorption parameters;

[0045] If the result is due to mass transfer limitation, the standard adsorption pressure, krypton adsorption efficiency, baseline adsorption efficiency, and preset pressure gain coefficient are analyzed to determine the appropriate adsorption pressure.

[0046] The adsorption pressure and standard gas flow rate are correlated and adjusted to generate adjusted adsorption parameters.

[0047] By adopting the above technical solution, when the change in mass transfer resistance indicates smooth mass transfer, the adjustment gas flow rate is determined after analyzing the standard gas flow rate, krypton adsorption efficiency, baseline adsorption efficiency, and flow rate gain coefficient. This, in turn, correlates the adjustment gas flow rate with the standard adsorption pressure to generate adjustment adsorption parameters. Conversely, when the change indicates limited mass transfer, the adjustment adsorption pressure is determined after analyzing the standard adsorption pressure, krypton adsorption efficiency, baseline adsorption efficiency, and pressure gain coefficient. This, in turn, correlates the adjustment adsorption pressure with the standard gas flow rate to generate adjustment adsorption parameters. Thus, after determining the trend of mass transfer resistance change, the corresponding adsorption parameters are adjusted based on its impact on adsorption efficiency to achieve efficient enrichment of krypton.

[0048] Optionally, the steps of analyzing the adjusted adsorption parameters and krypton adsorption efficiency to determine the actual adsorption parameters include:

[0049] Obtain the preset competitive inlet concentration and competitive outlet concentration of the competing gas;

[0050] The competitive inlet and outlet concentrations were analyzed to determine the competitive adsorption efficiency.

[0051] Calculate the quotient of the competitive adsorption efficiency and the krypton adsorption efficiency to generate the adsorption inhibition coefficient;

[0052] Determine whether the adsorption inhibition coefficient is less than the preset benchmark inhibition coefficient;

[0053] If it is less than, then the adjusted adsorption parameter will be defined as the actual adsorption parameter;

[0054] If it is not less than, then the corrected gas flow rate and corrected adsorption pressure are determined based on the adjusted adsorption parameters;

[0055] The actual gas flow rate is determined by analyzing the corrected gas flow rate, adsorption suppression coefficient, reference suppression coefficient, and preset suppression gain coefficient.

[0056] The actual gas flow rate and the corrected adsorption pressure are correlated to generate the actual adsorption parameters.

[0057] By adopting the above technical solution, the competitive adsorption efficiency is determined after analyzing the competitive inlet and outlet concentrations. An adsorption inhibition coefficient is then generated by calculating the quotient of the competitive adsorption efficiency and the krypton adsorption efficiency. If the adsorption inhibition coefficient is less than the benchmark inhibition coefficient, the adjusted adsorption parameters are directly defined as the actual adsorption parameters. If it is not less than the benchmark inhibition coefficient, the actual gas flow rate is determined after analyzing the corrected gas flow rate, adsorption inhibition coefficient, benchmark inhibition coefficient, and inhibition gain coefficient. The actual adsorption parameters are then generated by correlating the actual gas flow rate with the corrected adsorption pressure. The corresponding adsorption parameters are adjusted according to the presence of competitive adsorption to overcome the influence of competing gases on the krypton enrichment process, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve.

[0058] Secondly, this application provides a Kr enrichment system based on gradient adsorption of carbon molecular sieves, employing the following technical solution:

[0059] Kr enrichment systems based on gradient adsorption of carbon molecular sieves include:

[0060] The acquisition module is used to acquire system trigger signals, cooling completion signals, ventilation trigger signals, instantaneous flow rates, krypton inlet concentration, and krypton outlet concentration.

[0061] A memory for storing programs of the Kr enrichment method based on gradient adsorption of carbon molecular sieves as described in any of the preceding claims;

[0062] The processor and the program in the memory can be loaded and executed by the processor to implement the Kr enrichment method based on gradient adsorption of carbon molecular sieves as described in any of the above.

[0063] By adopting the above technical solution, the processor loads and executes the program of Kr enrichment method based on gradient adsorption of carbon molecular sieve stored in the memory. The control module acquires a series of data related to the Kr enrichment method, thereby controlling the cooling device to cool the first-stage adsorption column, and controlling the ventilation device to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection results are determined. After analyzing the krypton inlet concentration, krypton outlet concentration and pore size detection results, the actual adsorption parameters are determined. Based on the actual adsorption parameters, the first-stage separation module is controlled to enrich krypton, thus ensuring the efficient enrichment of krypton by carbon molecular sieve regardless of whether the pore size of carbon molecular sieve changes.

[0064] Thirdly, this application provides a smart terminal, which adopts the following technical solution:

[0065] A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any of the preceding claims, based on the Kr enrichment method using gradient adsorption of carbon molecular sieves.

[0066] By adopting the above technical solution, the processor loads and executes the program of Kr enrichment method based on gradient adsorption of carbon molecular sieve stored in the memory. The control module acquires a series of data related to the Kr enrichment method, thereby controlling the cooling device to cool the first-stage adsorption column, and controlling the ventilation device to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection results are determined. After analyzing the krypton inlet concentration, krypton outlet concentration and pore size detection results, the actual adsorption parameters are determined. Based on the actual adsorption parameters, the first-stage separation module is controlled to enrich krypton, thus ensuring the efficient enrichment of krypton by carbon molecular sieve regardless of whether the pore size of carbon molecular sieve changes.

[0067] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates the efficient enrichment of krypton by carbon molecular sieves, and adopts the following technical solution:

[0068] A computer-readable storage medium storing a computer program that can be loaded by a processor and executed by any of the above-described Kr enrichment methods based on gradient adsorption of carbon molecular sieves.

[0069] By adopting the above technical solution, the processor loads and executes the program of Kr enrichment method based on gradient adsorption of carbon molecular sieve stored in the memory. The control module acquires a series of data related to the Kr enrichment method, thereby controlling the cooling device to cool the first-stage adsorption column, and controlling the ventilation device to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection results are determined. After analyzing the krypton inlet concentration, krypton outlet concentration and pore size detection results, the actual adsorption parameters are determined. Based on the actual adsorption parameters, the first-stage separation module is controlled to enrich krypton, thus ensuring the efficient enrichment of krypton by carbon molecular sieve regardless of whether the pore size of carbon molecular sieve changes.

[0070] In summary, this application includes at least one of the following beneficial technical effects:

[0071] 1. By controlling the cooling device to cool the primary adsorption column, the venting device is controlled to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection results are determined. Then, the actual adsorption parameters are determined by analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results. Based on the actual adsorption parameters, the primary separation module is controlled to enrich krypton, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve regardless of whether the pore size of the carbon molecular sieve changes.

[0072] 2. The flow rate change value is generated by calculating the difference between the instantaneous flow rate and the standard flow rate value. Then, the flow rate change rate is generated by calculating the quotient of the flow rate change value and the standard flow rate value. When the flow rate change rate meets the requirements of the standard change rate range, the result of unchanged pore size is directly defined as the pore size detection result; otherwise, the result of pore size change is directly defined as the pore size detection result. Thus, the degree of change of instantaneous flow rate relative to the standard flow rate value determines whether the pore size of the carbon molecular sieve has changed, and thus determines the trend of change of mass transfer resistance, so as to facilitate the subsequent determination and adjustment of adsorption parameters.

[0073] 3. By analyzing the competitive inlet and outlet concentrations, the competitive adsorption efficiency is determined. Then, the adsorption inhibition coefficient is generated by calculating the quotient of the competitive adsorption efficiency and the krypton adsorption efficiency. If the adsorption inhibition coefficient is less than the benchmark inhibition coefficient, the adjusted adsorption parameters are directly defined as the actual adsorption parameters. If it is not less than the benchmark inhibition coefficient, the actual gas flow rate is determined by analyzing the corrected gas flow rate, adsorption inhibition coefficient, benchmark inhibition coefficient, and inhibition gain coefficient. The actual adsorption parameters are then generated by correlating the actual gas flow rate with the corrected adsorption pressure. The corresponding adsorption parameters are adjusted according to the presence of competitive adsorption to overcome the influence of competing gases on the krypton enrichment process, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve. Attached Figure Description

[0074] Figure 1This is a flowchart of a Kr enrichment method based on gradient adsorption of carbon molecular sieves in an embodiment of this application.

[0075] Figure 2 This is a flowchart of the steps in this application embodiment to analyze the instantaneous flow rate value and the preset standard flow rate value to determine the aperture detection result.

[0076] Figure 3 This is a flowchart illustrating the steps in this application embodiment to analyze the detection results of krypton inlet concentration, krypton outlet concentration, and pore size to determine the actual adsorption parameters.

[0077] Figure 4 This is a flowchart illustrating the steps for analyzing pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters in this application embodiment to determine the steps for adjusting adsorption parameters.

[0078] Figure 5 This is a flowchart illustrating the steps in this application embodiment to analyze the krypton adsorption efficiency and a preset benchmark adsorption efficiency to determine the change in mass transfer resistance.

[0079] Figure 6 This is a flowchart illustrating the steps for analyzing changes in mass transfer resistance, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate in this application embodiment to determine the steps for adjusting adsorption parameters.

[0080] Figure 7 This is a flowchart illustrating the steps in this application embodiment to analyze the adjustment of adsorption parameters and krypton adsorption efficiency to determine the actual adsorption parameters. Detailed Implementation

[0081] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 7 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0082] This application discloses a Kr enrichment method based on gradient adsorption of carbon molecular sieves. Specifically, it discloses a cooling device, a ventilation device, a primary adsorption column, and a processing terminal. The processing terminal is communicatively connected to the cooling device and the ventilation device to achieve data interaction and control. After receiving a system trigger signal, the processing terminal controls the cooling device to cool the primary adsorption column, thereby controlling the ventilation device to introduce sample gas into the column. After analyzing the instantaneous flow rate and standard flow rate, the pore size detection result is determined. Then, after analyzing the Kr inlet concentration, Kr outlet concentration, and pore size detection results, the actual adsorption parameters are determined. Based on the actual adsorption parameters, the primary separation module is controlled to enrich Kr, thus ensuring the efficient enrichment of Kr by carbon molecular sieves regardless of whether the pore size of the carbon molecular sieve changes.

[0083] Reference Figure 1 This application discloses a Kr enrichment method based on gradient adsorption of carbon molecular sieves, comprising the following steps:

[0084] Step S100: Obtain the system trigger signal.

[0085] Among them, the system trigger signal refers to the system's trigger signal, which is triggered by the operator to activate the system's start switch, thereby sending the level signal representing the system trigger signal to the processing terminal, providing the start-up conditions for the subsequent cooling device.

[0086] Step S101: Based on the system trigger signal, control the preset cooling device to cool the preset primary adsorption column, and obtain the cooling completion signal.

[0087] In this process, after receiving a system trigger signal, the processing terminal responds by controlling the cooling device to cool the primary adsorption column and acquiring a cooling completion signal. Acquiring the cooling completion signal confirms that the cooling of the primary adsorption column is complete, thus providing low-temperature conditions for krypton enrichment and achieving efficient krypton enrichment.

[0088] The cooling device is a device used to cool the primary adsorption column. It is installed in advance by the operator and has a sealed hot and cold trap as the main structure. A liquid nitrogen pipe is installed through the top to the upper end of the primary adsorption column. By adding liquid nitrogen to the preset position, the temperature inside the adsorption column is maintained at a low temperature, ensuring that the adsorption efficiency of krypton on the carbon molecular sieve reaches the optimal state, thereby achieving efficient enrichment of krypton.

[0089] A primary adsorption column is an adsorption unit composed of multiple layers of carbon molecular sieves with different pore sizes. It is installed in a cooling device, with an inlet at the top and an outlet at the bottom. The column is filled with carbon molecular sieves of different pore sizes, so that krypton can be preferentially adsorbed according to the size of different gas molecules, thereby achieving efficient enrichment of krypton in the sample gas.

[0090] The cooling completion signal refers to the signal that the cooling device has completed cooling the primary adsorption column. It is obtained by the cooling device sending a level signal representing the cooling completion signal to the processing terminal after the primary adsorption column has been cooled. By obtaining the cooling completion signal, it can be determined that the temperature of the current adsorption column has reached the enrichment requirement, thus providing the start-up conditions for subsequent adsorption of krypton.

[0091] Step S102: Based on the cooling completion signal, control the preset ventilation device to introduce the preset sample gas into the column and obtain the ventilation trigger signal.

[0092] In this process, after receiving the cooling completion signal, the processing terminal responds by controlling the ventilation device to introduce sample gas into the column and acquiring a ventilation trigger signal. Acquiring the ventilation trigger signal confirms that the ventilation device has started venting, thus providing raw materials for the enrichment process. Furthermore, the ventilation device controls the gas flow rate during adsorption, achieving efficient krypton enrichment.

[0093] A ventilation device is a device used to control the delivery of sample gas to the adsorption column. One end is connected to the sample gas chamber and the other end is connected to the inlet of the adsorption column. By installing a ventilation device, the flow rate of the sample gas can be precisely controlled and adjusted, thereby achieving effective control of the flow rate during the adsorption process.

[0094] Sample gas refers to a mixed gas containing the target gas krypton and possibly other components, which is collected in advance by the operator to provide raw materials for the krypton enrichment process.

[0095] The ventilation trigger signal is the signal that starts ventilation. After the ventilation device introduces the sample gas into the column, it sends the level signal representing the ventilation trigger signal to the processing terminal to obtain the signal. This ensures that the sample gas enters the adsorption column under suitable conditions, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve.

[0096] Step S103: Obtain instantaneous flow rate, krypton inlet concentration, and krypton outlet concentration based on the ventilation trigger signal.

[0097] The instantaneous flow rate value refers to the instantaneous gas flow rate at the inlet of the adsorption column, which is measured in real time by a flow meter. By obtaining the instantaneous flow rate value, the real-time status of sample gas delivery can be determined, thereby determining whether the gas flow rate has increased or decreased, providing data support for subsequent determination of pore size detection results.

[0098] The krypton inlet concentration refers to the concentration of krypton at the inlet of the adsorption column, which is measured in real time by a gas chromatograph. By obtaining the krypton inlet concentration, the proportion of krypton in the sample gas at the inlet of the adsorption column can be determined, so as to determine the mass transfer resistance change and then determine the actual adsorption parameters to ensure the efficient enrichment of krypton by the carbon molecular sieve.

[0099] The krypton outlet concentration refers to the concentration of krypton at the outlet of the adsorption column, which is measured in real time by a gas chromatograph. By obtaining the krypton outlet concentration, the current adsorption effect of carbon molecular sieve on krypton can be reflected, thus providing data support for subsequent determination and adjustment of adsorption parameters and actual adsorption parameters.

[0100] Step S104: Analyze the instantaneous flow rate value and the preset standard flow rate value to determine the aperture detection result.

[0101] The pore size detection result refers to the detection result of whether the pore size of the carbon molecular sieve has changed, including the result of constant pore size and the result of pore size change. It is obtained by the processing terminal after analyzing the instantaneous flow rate value and the standard flow rate value. The specific method is as follows: Figure 2 The steps are as follows. By determining the pore size detection results, it can be determined whether the pore size of the carbon molecular sieve has changed, thereby determining whether the mass transfer resistance has changed, so as to determine the actual adsorption parameters and thus achieve efficient enrichment of krypton.

[0102] The standard flow rate value refers to the stable instantaneous flow rate under ideal conditions, which is set in advance by the operator. By determining the standard flow rate value, a standard reference value can be provided for the instantaneous flow rate value, providing data support for subsequent calculation of the flow rate change rate, thereby determining whether there is a change in the pore size of the carbon molecular sieve.

[0103] Step S105: Analyze the detection results of krypton inlet concentration, krypton outlet concentration, and pore size to determine the actual adsorption parameters.

[0104] The actual adsorption parameters refer to the parameters obtained after further correction of the adsorption parameters based on the presence of competing gases, after adjusting the original adsorption parameters. These parameters include the actual gas flow rate and the corrected adsorption pressure, obtained by analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results from the treatment terminal. Specific methods are detailed in [reference needed]. Figure 3 The steps are as follows. By determining the actual adsorption parameters, the sample gas can achieve efficient enrichment of krypton through carbon molecular sieves at suitable gas flow rates and adsorption pressures.

[0105] Step S106: Control the preset primary separation module to enrich krypton according to the actual adsorption parameters.

[0106] In this process, after determining the actual adsorption parameters, the processing terminal controls the primary separation module to enrich krypton based on the actual adsorption parameters. Liquid nitrogen is used to cool the adsorption column. After cooling, sample gas is introduced under the conditions of the actual adsorption parameters to complete the adsorption of krypton. This effectively overcomes the interference of carbon molecular sieve pore size changes and competitive adsorption on the krypton adsorption process, thereby ensuring the efficient enrichment of krypton by carbon molecular sieve.

[0107] The primary separation module is an independent unit of the krypton enrichment method based on gradient adsorption of carbon molecular sieves. It is set in advance by the operator. The primary separation module can preferentially remove impurity gases that are significantly different from krypton in the sample gas according to the preset pore size gradient, while simultaneously completing the adsorption of krypton to ensure the efficient enrichment of krypton by carbon molecular sieves.

[0108] Reference Figure 2 The steps for analyzing the instantaneous flow rate and the preset standard flow rate to determine the orifice size detection results include:

[0109] Step S200: Calculate the difference between the instantaneous flow rate and the standard flow rate to generate the flow rate change value.

[0110] Among them, the flow change value refers to the change in the instantaneous flow value relative to the standard flow value. It is obtained by the processing terminal after calculating the difference between the instantaneous flow value and the standard flow value. By determining the flow change value, the degree of deviation of the instantaneous flow value from the standard flow value can be determined, thereby providing data support for subsequent calculation of the flow change rate.

[0111] Step S201: Calculate the quotient of the flow change value and the standard flow value to generate the flow change rate.

[0112] The flow rate change rate refers to the magnitude of the instantaneous flow rate change per unit time. It is obtained by calculating the quotient of the flow rate change value and the standard flow rate value by the processing terminal. By determining the flow rate change rate, the degree of change of the instantaneous flow rate relative to the standard flow rate value can be determined, thereby determining whether the pore size of the carbon molecular sieve has changed, and thus achieving efficient enrichment of krypton.

[0113] Step S202: Determine whether the flow rate change rate meets the requirements of the preset standard change rate range.

[0114] The standard change rate range refers to a standard range within which the flow rate change rate meets expectations. This range is defined in advance by the operator and is within the specified standard change rate range. The processing terminal determines whether the orifice diameter has changed by judging whether the flow rate change rate is within the standard range, thus confirming the orifice diameter change result.

[0115] Step S2021: If the condition is met, the preset result of unchanged aperture is defined as the aperture detection result.

[0116] If the processing terminal determines that the flow rate change rate is within the standard change rate range, it indicates that the pore size of the carbon molecular sieve has not changed. In this case, the result of unchanged pore size can be directly defined as the pore size detection result, so as to facilitate the subsequent determination and adjustment of adsorption parameters.

[0117] A constant pore size result refers to a result where the pore size of the carbon molecular sieve has not changed, and this result is stored at the processing terminal by the operator. By confirming a constant pore size result, it can be determined that the pore size of the carbon molecular sieve has not changed, thereby confirming that the mass transfer resistance has not changed, which facilitates subsequent determination and adjustment of adsorption parameters.

[0118] Step S2022: If it does not meet the requirements, the preset aperture change result is defined as the aperture detection result.

[0119] If the processing terminal determines that the flow rate change rate is not within the standard change rate range, it indicates that the pore size of the carbon molecular sieve has changed. In this case, the pore size change result can be directly defined as the pore size detection result, so as to determine whether the mass transfer resistance has changed, so as to determine the subsequent adjustment of adsorption parameters.

[0120] The pore size change result refers to the change in the pore size of the carbon molecular sieve, which is stored by the operator at the processing terminal. By determining the pore size change result, it can be determined whether the pore size of the carbon molecular sieve has changed, and thus whether the mass transfer resistance has changed, so as to determine and adjust the adsorption parameters accordingly.

[0121] Reference Figure 3 The steps for analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results to determine the actual adsorption parameters include:

[0122] Step S300: Calculate the difference between the krypton inlet concentration and the krypton outlet concentration to generate the krypton concentration deviation.

[0123] The krypton concentration deviation refers to the difference between the concentration of krypton at the inlet of the adsorption column and the concentration of the sample gas at the outlet after adsorption by the carbon molecular sieve. It is obtained by calculating the difference between the krypton inlet concentration and the krypton outlet concentration by the processing terminal. By determining the krypton concentration deviation, the adsorption effect of the carbon molecular sieve on krypton can be determined, providing data support for subsequent calculation of krypton adsorption efficiency.

[0124] Step S301: Calculate the quotient of the krypton concentration deviation and the krypton inlet concentration to generate the krypton adsorption efficiency.

[0125] Among them, the krypton adsorption efficiency refers to the degree of adsorption of krypton by the carbon molecular sieve during the enrichment process. It is obtained by calculating the quotient of the krypton concentration deviation and the krypton inlet concentration at the treatment terminal. By determining the krypton adsorption efficiency, the adsorption selectivity of the carbon molecular sieve for krypton can be determined, thereby judging whether the mass transfer resistance has changed, and providing data support for subsequent determination and adjustment of adsorption parameters and actual adsorption parameters.

[0126] Step S302: Analyze the pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters to determine the adjustment of adsorption parameters.

[0127] Among them, the adjusted adsorption parameters refer to the parameters after correcting the standard adsorption parameters based on the pore size detection results and the influence of mass transfer resistance. These include the standard adsorption parameters, standard gas flow rate, standard adsorption pressure, adjusted gas flow rate, adjusted adsorption pressure, corrected gas flow rate, and corrected adsorption pressure. These parameters are obtained by the processing terminal after analyzing the pore size detection results and krypton adsorption efficiency. Specific methods are described in [reference needed]. Figure 4 The steps involve determining and adjusting adsorption parameters to counteract the abnormal mass transfer resistance caused by pore size changes, thereby ensuring that impurity gases are effectively screened out and improving the adsorption efficiency of krypton.

[0128] Standard adsorption parameters refer to the baseline adsorption parameters set by carbon molecular sieves when the krypton enrichment effect meets the standard. These parameters include standard gas flow rate and standard adsorption pressure, which are set in advance by the operator. By setting standard adsorption parameters, krypton can be enriched according to standard parameters when the pore size does not change. When the pore size changes, the adsorption parameters are adjusted based on the standard adsorption parameters to achieve the purpose of efficient enrichment of krypton.

[0129] Step S303: Analyze the adjusted adsorption parameters and krypton adsorption efficiency to determine the actual adsorption parameters.

[0130] After determining the adjusted adsorption parameters, the processing terminal analyzes the adjusted adsorption parameters and krypton adsorption efficiency to obtain the actual adsorption parameters. The specific method is described in [reference needed]. Figure 7 By determining the actual adsorption parameters, the sample gas can be efficiently enriched by carbon molecular sieves under suitable gas flow rate and adsorption pressure.

[0131] Reference Figure 4 The steps for adjusting the adsorption parameters include analyzing the pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters.

[0132] Step S400: Determine whether the aperture detection result is a preset aperture unchanged result or a preset aperture change result.

[0133] By determining whether the pore size detection result is unchanged or changed, it is possible to ascertain whether the pore size of the carbon molecular sieve has changed, thereby determining whether the mass transfer resistance affects the enrichment degree of krypton by the carbon molecular sieve, so as to facilitate subsequent determination and adjustment of adsorption parameters.

[0134] Step S4001: If the pore size remains unchanged, then the preset standard adsorption parameter is defined as the adjusted adsorption parameter.

[0135] If the result is that the pore size remains unchanged, it indicates that the pore size of the carbon molecular sieve has not changed, and the mass transfer resistance will not change either. Therefore, the standard adsorption parameter is directly defined as the adjusted adsorption parameter, so as to achieve efficient enrichment of krypton under the standard adsorption parameter.

[0136] Step S4002: If the result is a change in pore size, analyze the krypton adsorption efficiency and the preset benchmark adsorption efficiency to determine the change in mass transfer resistance.

[0137] If the result is a change in pore size, it indicates that the pore size of the carbon molecular sieve has changed. At this time, the mass transfer resistance may change. Therefore, the treatment terminal needs to analyze the krypton adsorption efficiency and the baseline adsorption efficiency to determine the change in mass transfer resistance and thus determine the adjustment of adsorption parameters.

[0138] The mass transfer resistance variation result refers to the trend of mass transfer resistance change, including smooth mass transfer and mass transfer-limited results. It is obtained by analyzing the krypton adsorption efficiency and baseline adsorption efficiency at the treatment terminal. Specific methods are described in [reference needed]. Figure 5 The steps are as follows. By determining the changes in mass transfer resistance, the trend of mass transfer resistance under varying pore size can be identified, which facilitates subsequent adjustments to adsorption parameters.

[0139] The baseline adsorption efficiency refers to the stable adsorption efficiency of krypton by the carbon molecular sieve under standard conditions. It is set in advance by the operator. By setting the baseline adsorption efficiency, it is possible to determine whether there is a deviation between the current krypton adsorption efficiency and the baseline adsorption efficiency, thereby determining the change in mass transfer resistance and providing data support for subsequent determination and adjustment of adsorption parameters.

[0140] Step S40021: Determine the standard adsorption pressure and standard gas flow rate based on the standard adsorption parameters.

[0141] The standard adsorption pressure refers to the stable adsorption pressure of the carbon molecular sieve under ideal conditions. It is identified and called by the processing terminal from the standard adsorption parameters. By calling the standard adsorption pressure, data support is provided for subsequent determination and adjustment of the adsorption pressure, thereby ensuring that there is still sufficient adsorption force to adsorb krypton even when the mass transfer resistance changes.

[0142] The standard gas flow rate refers to the stable gas flow rate through the carbon molecular sieve under ideal conditions. It is identified and called by the processing terminal from the standard adsorption parameters. By calling the standard gas flow rate, data support is provided for subsequent determination and adjustment of the gas flow rate, thereby ensuring that krypton still has enough time to contact the carbon molecular sieve under changes in mass transfer resistance, thus achieving efficient enrichment of krypton.

[0143] Step S40022: Analyze the results of mass transfer resistance changes, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate to determine the adsorption parameters to be adjusted.

[0144] After determining the change in mass transfer resistance, the processing terminal analyzes the change in mass transfer resistance, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate to obtain adjusted adsorption parameters. Specific methods are described in [reference needed]. Figure 6 The steps involve determining and adjusting adsorption parameters to offset the impact of changes in mass transfer resistance caused by variations in the pore size of the carbon molecular sieve on the krypton enrichment efficiency, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve.

[0145] Reference Figure 5 The steps for analyzing the krypton adsorption efficiency and a preset baseline adsorption efficiency to determine the change in mass transfer resistance include:

[0146] Step S500: Determine whether the krypton adsorption efficiency is greater than the baseline adsorption efficiency.

[0147] By determining whether the krypton adsorption efficiency is greater than the baseline adsorption efficiency, the deviation between the current krypton adsorption efficiency and the baseline adsorption efficiency can be determined, thereby determining whether the trend of mass transfer resistance is smooth or restricted, so as to facilitate subsequent adjustment of adsorption parameters.

[0148] Step S5001: If it is greater than, then the preset smooth mass transfer result is defined as the change result of mass transfer resistance.

[0149] If the krypton adsorption efficiency is greater than the baseline adsorption efficiency, it indicates that the mass transfer resistance has decreased. Therefore, the smooth mass transfer result is directly defined as the change in mass transfer resistance. By determining the change in mass transfer resistance, the trend of mass transfer resistance can be determined, and the adsorption parameters can be adjusted according to the change in mass transfer resistance to facilitate the subsequent determination of the actual adsorption parameters.

[0150] A smooth mass transfer result refers to a reduction in the degree of diffusion resistance of krypton in carbon molecular sieves, resulting in an increased mass transfer rate. This result is stored at the processing terminal by the operator. Determining a smooth mass transfer result indicates that the current mass transfer resistance is at a low level, facilitating subsequent adjustments to adsorption parameters.

[0151] Step S5002: If it is not greater than, then the preset mass transfer limitation result is defined as the mass transfer resistance change result.

[0152] If the krypton adsorption efficiency is not greater than the baseline adsorption efficiency, it indicates that the mass transfer resistance has increased. Therefore, the result of limited mass transfer is directly defined as the result of change in mass transfer resistance. By determining the result of change in mass transfer resistance, the trend of change in mass transfer resistance can be determined, so as to determine the trend of change in mass transfer resistance in the subsequent determination of actual adsorption parameters.

[0153] Mass transfer limitation results refer to the increased degree of diffusion resistance of krypton in carbon molecular sieves, resulting in a decreased mass transfer rate. These results are stored at the processing terminal by the operator. Identifying mass transfer limitation results indicates that the current mass transfer resistance is at a high level, facilitating subsequent adjustments to adsorption parameters.

[0154] Reference Figure 6 The analysis of mass transfer resistance changes, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate determines the steps for adjusting adsorption parameters, including:

[0155] Step S600: Determine whether the change in mass transfer resistance is a preset smooth mass transfer result or a preset limited mass transfer result.

[0156] By judging the change in mass transfer resistance, it can be determined whether the current mass transfer resistance is in a smooth state or a restricted state. The corresponding adsorption parameters can then be adjusted according to the current state to achieve efficient enrichment of krypton.

[0157] Step S6001: If the mass transfer is smooth, analyze the standard gas flow rate, krypton adsorption efficiency, reference adsorption efficiency, and preset flow rate gain coefficient to determine the adjustment gas flow rate.

[0158] If the mass transfer is smooth, it means that the mass transfer resistance is reduced. At this time, the adsorption efficiency may be higher than the standard value. However, if the same gas flow rate is maintained, the gas will pass through the carbon molecular sieve too quickly, resulting in the carbon molecular sieve not being fully utilized or locally saturated, which will affect the overall enrichment effect. Therefore, the treatment terminal analyzes the standard gas flow rate, krypton adsorption efficiency, reference adsorption efficiency and flow rate gain coefficient to obtain the adjusted gas flow rate, so as to determine the adjustment of adsorption parameters in the future.

[0159] Adjusted gas flow rate refers to the corrected gas flow rate based on the standard gas flow rate. It is obtained by analyzing the standard gas flow rate, krypton adsorption efficiency, baseline adsorption efficiency, and flow rate gain coefficient at the processing terminal, and can be expressed as follows: ,in This indicates an adjustment to the gas flow rate. Indicates the standard gas flow rate. Represents the flow velocity gain coefficient. This indicates the krypton adsorption efficiency. This represents the baseline adsorption efficiency. By determining the gas flow rate, it can be determined that the larger the difference between the krypton adsorption efficiency and the baseline adsorption efficiency, the greater the excess krypton adsorption efficiency due to the reduced mass transfer resistance. Therefore, it is necessary to adjust the gas flow rate to prevent local saturation of the carbon molecular sieve, thereby ensuring the efficient enrichment of krypton by the carbon molecular sieve.

[0160] The flow rate gain coefficient refers to the flow rate compensation value corresponding to the excess adsorption efficiency per unit. It is set in advance by the operator. By determining the flow rate gain coefficient, the extent of flow rate reduction can be controlled, thereby prolonging the contact time between the sample gas and the carbon molecular sieve and preventing the carbon molecular sieve from becoming saturated too early.

[0161] Step S60011: Correlate the gas flow rate and standard adsorption pressure to generate adjusted adsorption parameters.

[0162] In this process, after determining the adjustment gas flow rate, the processing terminal generates adjustment adsorption parameters by associating the adjustment gas flow rate with the standard adsorption pressure. This counteracts the effect of excessively high gas flow rate caused by the reduction in mass transfer resistance, providing data support for the subsequent determination of actual adjustment parameters.

[0163] Step S6002: If the result is a mass transfer limitation, analyze the standard adsorption pressure, krypton adsorption efficiency, reference adsorption efficiency, and preset pressure gain coefficient to determine the adjustment of the adsorption pressure.

[0164] If the result is mass transfer limited, it indicates that the mass transfer resistance is increased, the diffusion rate of the sample gas in the carbon molecular sieve is slowed down, and the adsorption efficiency of krypton is reduced. Therefore, the treatment terminal analyzes the standard adsorption pressure, krypton adsorption efficiency, reference adsorption efficiency and pressure gain coefficient to determine the adsorption pressure to adjust in order to determine the adsorption parameters for subsequent adjustment.

[0165] Adjusted adsorption pressure refers to the corrected adsorption pressure based on the standard adsorption pressure. It is obtained by analyzing the standard adsorption pressure, krypton adsorption efficiency, baseline adsorption efficiency, and pressure gain coefficient at the treatment terminal, and can be expressed as follows: , This indicates an adjustment of the adsorption pressure. Indicates standard adsorption pressure. Indicates the pressure gain coefficient. This indicates the krypton adsorption efficiency. This represents the baseline adsorption efficiency. By determining the adjustment of the adsorption pressure, it can be determined that the higher the baseline adsorption efficiency and the krypton adsorption efficiency, the greater the loss of krypton adsorption efficiency due to the increased mass transfer resistance, and the greater the negative impact of the mass transfer resistance. Therefore, it is necessary to increase the adsorption pressure to improve the adsorption driving force and compensate for the slowed adsorption process caused by the increased mass transfer resistance.

[0166] The pressure gain coefficient refers to the pressure compensation value corresponding to the unit adsorption efficiency loss. It is set in advance by the operator. By setting the pressure gain coefficient, the increase in adsorption pressure can be controlled, thereby avoiding overcompensation and damage to the carbon molecular sieve.

[0167] Step S60021: Correlate the adsorption pressure and standard gas flow rate to generate adjusted adsorption parameters.

[0168] In this process, after determining the adjustment adsorption pressure, the processing terminal correlates the adjustment adsorption pressure and the standard gas flow rate to generate adjustment adsorption parameters. This offsets the effect of insufficient krypton adsorption caused by increased mass transfer resistance, providing data support for the subsequent determination of actual adjustment parameters.

[0169] Reference Figure 7 The steps for analyzing the adjustment of adsorption parameters and krypton adsorption efficiency to determine the actual adsorption parameters include:

[0170] Step S700: Obtain the preset competitive inlet concentration and competitive outlet concentration of the competing gas.

[0171] Among them, the competing gas refers to the gas with a diameter similar to that of krypton and that competes with krypton for adsorption sites of carbon molecular sieve, such as methane or xenon. It is set in advance by the operator. By determining the competing gas, it is possible to determine which gases in the sample gas will compete with krypton for adsorption. Thus, the adsorption parameters can be adjusted according to the degree of competitive adsorption to ensure the efficient enrichment of krypton by carbon molecular sieve.

[0172] The competitive inlet concentration refers to the concentration of the competing gas in the sample gas at the inlet of the carbon molecular sieve. It is measured in real time by a gas chromatograph. By obtaining the competitive inlet concentration, the proportion of the competing gas in the sample gas at the inlet of the adsorption column can be determined, providing data support for the subsequent determination of the competitive adsorption efficiency.

[0173] The competitive outlet concentration refers to the concentration of the competing gas in the sample gas at the outlet of the carbon molecular sieve. It is measured in real time by a gas chromatograph. By obtaining the competitive outlet concentration, the proportion of the competing gas in the sample gas at the outlet of the adsorption column can be determined, providing data support for the subsequent determination of the competitive adsorption efficiency.

[0174] Step S701: Analyze the competitive inlet concentration and competitive outlet concentration to determine the competitive adsorption efficiency.

[0175] The competitive adsorption efficiency refers to the adsorption ratio of competing gases in the enrichment stage of the carbon molecular sieve, obtained by analyzing the competitive inlet and outlet concentrations at the treatment terminal, and can be expressed as follows: ,in Indicates competitive adsorption efficiency. Indicates the concentration of competing imports. This represents the competitive outlet concentration. By determining the competitive adsorption efficiency, we can ascertain that the lower the competitive outlet concentration, the greater the competitive adsorption efficiency, thus providing data support for subsequently determining the adsorption inhibition coefficient.

[0176] Step S702: Calculate the quotient of the competitive adsorption efficiency and the krypton adsorption efficiency to generate the adsorption inhibition coefficient.

[0177] The adsorption inhibition coefficient is the ratio of the adsorption efficiency of the competing gas to the adsorption efficiency of krypton. It is obtained by calculating the quotient of the competing adsorption efficiency and the krypton adsorption efficiency at the treatment terminal. By determining the adsorption inhibition coefficient, the adsorption selectivity of carbon molecular sieve for krypton relative to the competing gas can be quantified, thereby adjusting the corresponding parameters to increase the adsorption selectivity for krypton and thus ensuring the efficient enrichment of krypton by carbon molecular sieve.

[0178] Step S703: Determine whether the adsorption inhibition coefficient is less than the preset benchmark inhibition coefficient.

[0179] The baseline inhibition coefficient is a standard threshold coefficient used to measure the existence of competitive adsorption, and it is set in advance by the operator. By determining whether the adsorption inhibition coefficient is less than the baseline inhibition coefficient, the existence of competitive adsorption is determined, and the corresponding adsorption parameters are adjusted accordingly to achieve efficient enrichment of krypton.

[0180] Step S7031: If it is less than, then the adjusted adsorption parameter is defined as the actual adsorption parameter.

[0181] If the adsorption inhibition coefficient is less than the baseline inhibition coefficient, it means that there is no competitive adsorption. In this case, the adjusted adsorption parameters are directly defined as the actual adsorption parameters, thereby achieving efficient enrichment of krypton.

[0182] Step S7032: If it is not less than, then determine the corrected gas flow rate and corrected adsorption pressure based on the adjusted adsorption parameters.

[0183] If the adsorption inhibition coefficient is not less than the baseline inhibition coefficient, it indicates that the competing gas occupies more adsorption sites and there is competitive adsorption. The processing terminal determines the corrected gas flow rate and corrected adsorption pressure based on the adjusted adsorption parameters, providing data support for the subsequent determination of the actual gas flow rate.

[0184] Correcting the gas flow rate refers to adjusting the corresponding gas flow rate in the adsorption parameters. The processing terminal identifies and retrieves this information from the adsorption parameters and adjusts the gas flow rate based on the presence of competing adsorption, thus facilitating the subsequent determination of the actual gas flow rate.

[0185] Correcting the adsorption pressure refers to adjusting the corresponding adsorption pressure in the adsorption parameters. The processing terminal identifies and calls this value from the adjusted adsorption parameters to facilitate the subsequent determination of the actual adsorption parameters.

[0186] Step S70321: Analyze the corrected gas flow rate, adsorption inhibition coefficient, reference inhibition coefficient and preset inhibition gain coefficient to determine the actual gas flow rate.

[0187] The actual gas flow rate refers to the gas flow rate after correction for competitive adsorption, based on the corrected gas flow rate. It is obtained by analyzing the corrected gas flow rate, adsorption inhibition coefficient, baseline inhibition coefficient, and inhibition gain coefficient at the processing terminal, and can be expressed as follows: ,in Indicates the actual gas flow rate. Indicates the corrected gas flow rate. This represents the suppression gain coefficient. Indicates the adsorption inhibition coefficient. This represents the baseline inhibition coefficient. It can be determined by setting the actual gas flow rate. A higher inhibition coefficient indicates stronger competitive adsorption, which, when multiplied by the inhibition gain coefficient, reduces the actual gas flow rate. This prolongs the contact time between the sample gas and the carbon molecular sieve, giving krypton more opportunities to be adsorbed.

[0188] The suppression gain coefficient refers to the range used to adjust the gas flow rate. It is set in advance by the operator. By determining the suppression gain coefficient, it can be determined that the larger the suppression gain coefficient is, the more sensitive it is to changes in the adsorption suppression coefficient, thereby reducing the gas flow rate more significantly and increasing the contact time between the sample gas and the carbon molecular sieve, so as to ensure the efficient enrichment of krypton by the carbon molecular sieve.

[0189] Step S70322: Correlate the actual gas flow rate and the corrected adsorption pressure to generate actual adsorption parameters.

[0190] In this process, after determining the corrected adsorption pressure, the actual gas flow rate and the corrected adsorption pressure are correlated at the processing terminal to generate actual adsorption parameters. This effectively overcomes the interference of carbon molecular sieve pore size variation and competitive adsorption on the krypton adsorption process, thereby ensuring the efficient enrichment of krypton by carbon molecular sieve.

[0191] Based on the same inventive concept, embodiments of this application provide a Kr enrichment system based on gradient adsorption of carbon molecular sieves, comprising:

[0192] The acquisition module is used to acquire system trigger signals, cooling completion signals, ventilation trigger signals, instantaneous flow rates, krypton inlet concentration, krypton outlet concentration, competing inlet concentration, and competing outlet concentration;

[0193] A memory for storing programs for the Kr enrichment method based on gradient adsorption of carbon molecular sieves;

[0194] The processor can load and execute programs in memory to implement the Kr enrichment method based on gradient adsorption of carbon molecular sieves.

[0195] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0196] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed by a Kr enrichment method based on gradient adsorption of carbon molecular sieves.

[0197] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0198] Based on the same inventive concept, embodiments of this application provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded and executed by the processor using a Kr enrichment method based on gradient adsorption of carbon molecular sieves.

[0199] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0200] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A Kr enrichment method based on gradient adsorption of carbon molecular sieves, characterized in that, include: Obtain system trigger signals; The system trigger signal controls a preset cooling device to cool the preset primary adsorption column, and a cooling completion signal is obtained. Based on the cooling completion signal, the preset ventilation device is controlled to introduce the preset sample gas into the column and a ventilation trigger signal is obtained. Instantaneous flow rate, krypton inlet concentration, and krypton outlet concentration are obtained based on the ventilation trigger signal; The instantaneous flow rate and the preset standard flow rate are analyzed to determine the orifice detection results; The results of krypton inlet concentration, krypton outlet concentration, and pore size detection were analyzed to determine the actual adsorption parameters; The krypton is enriched by controlling the preset primary separation module according to the actual adsorption parameters. The steps for analyzing instantaneous flow rate values ​​and preset standard flow rate values ​​to determine the orifice size detection results include: Calculate the difference between the instantaneous flow rate and the standard flow rate to generate the flow rate change value; Calculate the quotient of the change in flow rate to the standard flow rate to generate the rate of change in flow rate; Determine whether the rate of change of flow meets the requirements of the preset standard rate of change range; If the conditions are met, the preset result of unchanged aperture is defined as the aperture detection result. If it does not meet the requirements, the preset aperture change result will be defined as the aperture detection result. The steps for analyzing the krypton inlet concentration, krypton outlet concentration, and pore size detection results to determine the actual adsorption parameters include: Calculate the difference between the krypton import concentration and the krypton export concentration to generate the krypton concentration bias; Calculate the quotient of the krypton concentration deviation and the krypton inlet concentration to generate the krypton adsorption efficiency; The pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters were analyzed to determine the appropriate adjustments to the adsorption parameters. The adsorption parameters and krypton adsorption efficiency were analyzed to determine the actual adsorption parameters. The steps for adjusting the adsorption parameters include analyzing the pore size detection results, krypton adsorption efficiency, and preset standard adsorption parameters. The result of the aperture detection is determined to be either the preset aperture unchanged result or the preset aperture change result; If the pore size remains constant, then the standard adsorption parameter is defined as the adjusted adsorption parameter; If the result is a change in pore size, the krypton adsorption efficiency and the preset baseline adsorption efficiency are analyzed to determine the change in mass transfer resistance. Determine the standard adsorption pressure and standard gas flow rate based on the standard adsorption parameters; The results of mass transfer resistance variation, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate were analyzed to determine the adsorption parameters to be adjusted.

2. The Kr enrichment method based on gradient adsorption of carbon molecular sieves according to claim 1, characterized in that, The steps for analyzing the krypton adsorption efficiency and a preset baseline adsorption efficiency to determine the change in mass transfer resistance include: Determine whether the krypton adsorption efficiency is greater than the baseline adsorption efficiency; If it is greater than the preset mass transfer smoothness result, then the mass transfer resistance change result will be defined as the result. If it is not greater than, then the preset mass transfer limitation result is defined as the mass transfer resistance change result.

3. The Kr enrichment method based on gradient adsorption of carbon molecular sieves according to claim 1, characterized in that, The analysis of mass transfer resistance changes, krypton adsorption efficiency, baseline adsorption efficiency, standard adsorption pressure, and standard gas flow rate is used to determine the steps for adjusting adsorption parameters, including: The result of the change in mass transfer resistance is determined to be either the preset result of smooth mass transfer or the preset result of limited mass transfer. If the mass transfer is smooth, the standard gas flow rate, krypton adsorption efficiency, reference adsorption efficiency, and preset flow rate gain coefficient are analyzed to determine the adjustment of the gas flow rate. The gas flow rate and standard adsorption pressure are correlated to generate adjusted adsorption parameters; If the result is due to mass transfer limitation, the standard adsorption pressure, krypton adsorption efficiency, baseline adsorption efficiency, and preset pressure gain coefficient are analyzed to determine the appropriate adsorption pressure. The adsorption pressure and standard gas flow rate are correlated and adjusted to generate adjusted adsorption parameters.

4. The Kr enrichment method based on gradient adsorption of carbon molecular sieves according to claim 1, characterized in that, The steps for analyzing the adsorption parameters and krypton adsorption efficiency to determine the actual adsorption parameters include: Obtain the preset competitive inlet concentration and competitive outlet concentration of the competing gas; The competitive inlet and outlet concentrations were analyzed to determine the competitive adsorption efficiency. Calculate the quotient of the competitive adsorption efficiency and the krypton adsorption efficiency to generate the adsorption inhibition coefficient; Determine whether the adsorption inhibition coefficient is less than the preset benchmark inhibition coefficient; If it is less than, then the adjusted adsorption parameter will be defined as the actual adsorption parameter; If it is not less than, then the corrected gas flow rate and corrected adsorption pressure are determined based on the adjusted adsorption parameters; The actual gas flow rate is determined by analyzing the corrected gas flow rate, adsorption suppression coefficient, reference suppression coefficient, and preset suppression gain coefficient. The actual gas flow rate and the corrected adsorption pressure are correlated to generate the actual adsorption parameters.

5. A Kr enrichment system based on gradient adsorption of carbon molecular sieves, characterized in that, include: The acquisition module is used to acquire system trigger signals, cooling completion signals, ventilation trigger signals, instantaneous flow rates, krypton inlet concentration, and krypton outlet concentration. A memory for storing the program of the Kr enrichment method based on gradient adsorption of carbon molecular sieves as described in any one of claims 1 to 4; The processor and the program in the memory are capable of being loaded and executed by the processor to implement the Kr enrichment method based on gradient adsorption of carbon molecular sieves as described in any one of claims 1 to 4.

6. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 4, based on the Kr enrichment method of gradient adsorption of carbon molecular sieves.

7. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed as described in any one of claims 1 to 4, based on the Kr enrichment method using gradient adsorption of carbon molecular sieves.

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