Method, system, equipment and medium for automatically adjusting load of molecular sieve

Abstract

The invention relates to the technical field of automatic adjustment, in particular to a method, a system and equipment for automatically adjusting the load of a molecular sieve and a medium, and the method comprises the following steps: acquiring various operating parameters of an air separation device under the current operating condition; judging whether a specified operation parameter value in the adsorption process meets a triggering condition of residual effective adsorption time calculation or not based on the operation parameter; if the triggering condition is met, calculating the residual effective adsorption time for adsorbing the corresponding component in the current adsorption period based on the operation parameters; calculating a difference value between the current adsorption period and the initial adsorption period based on the residual effective adsorption time; and controlling the air separation device to carry out molecular sieve load regulation operation based on the difference value. According to the invention, quick response to working condition change can be realized, and the molecular sieve is always in an optimal working state, so that the adsorption efficiency is improved, the service life of the molecular sieve is prolonged, the regeneration frequency is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of automatic regulation, and in particular to a method, system, equipment and medium for automatically regulating molecular sieve load. Background Art

[0002] As an industrial equipment for separating air, the air separation unit needs to undergo compression, precooling, purification, expansion refrigeration and other processes before low-temperature separation. In order to ensure that the gas does not block the channel in a low-temperature environment, the dew point of the purified air after adsorption by the purification system is generally required to be ≤-60℃, CO 2 The content is ≤1ppm, so there are very high requirements for the molecular sieve design of the purification system.

[0003] In the traditional air separation variable load process, the molecular sieve load regulation method mainly relies on manual experience and temporary adjustments, which has problems such as slow response, low accuracy and complex operation, and it is difficult to meet the needs of efficient, precise and automated control.

[0004] Therefore, the traditional air separation variable load process cannot respond quickly to changes in operating conditions, and the technical problem of low adsorption efficiency needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present application is to provide a method, system, equipment and medium for automatically adjusting the molecular sieve load, aiming to solve the technical problem that the traditional air separation variable load process cannot respond quickly to changes in operating conditions and has low adsorption efficiency.

[0006] In order to achieve the above-mentioned invention object, the present application proposes a method for automatically adjusting the molecular sieve load, the method comprising: Obtain various operating parameters of the air separation unit under the current operating conditions; Determining whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; If the trigger condition is met, the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle is calculated based on the operating parameters; Calculate the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; The air separation device is controlled based on the difference to perform molecular sieve load adjustment operation.

[0007] Furthermore, the specified operating parameter value includes an intake air volume and a first gas content, and the step of judging whether the specified operating parameter value in the adsorption process meets a trigger condition based on the operating parameter includes: Obtaining the current intake air volume and the first gas content; determining whether the intake air amount is within a first intake air amount range and whether the first gas content is within a first gas content threshold range; If the intake air amount is not within the first intake air amount range or the first gas content is not within the first gas content threshold range, it is determined that the trigger condition is met.

[0008] Furthermore, the remaining effective adsorption time includes a first remaining effective adsorption time, and if the trigger condition is met, the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters includes: The first remaining effective adsorption time is calculated based on the following formula: T 剩余1 =(T 总 ×Q 空气 ×V 第一气体 -t 1 ×Q 空气 ×V 第一气体 ) / Q' 空气 / V' 第一气体 -t 2 ; Among them, T 剩余1 is the first remaining effective adsorption time for adsorbing the first gas under the current operating condition; T 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 第一气体 and V' 第一气体 are the first gas content in the atmosphere under design conditions and operating conditions, respectively.

[0009] Furthermore, the specified operating parameter value includes intake air temperature and water content, and the step of judging whether the specified operating parameter value in the adsorption process meets the trigger condition based on the operating parameter includes: Obtaining current intake air temperature and first liquid content; determining whether the intake air temperature is within a first temperature range and whether the first liquid content is within a first liquid content threshold range; If the intake air temperature is not within the first temperature range or the first liquid content is not within the first liquid content threshold range, it is determined that the trigger condition is met.

[0010] Further, the first liquid includes water, the remaining effective adsorption time includes a second remaining effective adsorption time, and the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters if the trigger condition is met includes: The second remaining effective adsorption time is calculated based on the following formula: T剩余2 =(T 总 ×Q 空气 ×V 水 -t 1 ×Q 空气 ×V 水 ) / Q' 空气 / V' 水 -t2 Among them, T 剩余2 T is the second remaining effective adsorption time of water under operating conditions; 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 水 and V' 水 are the air moisture content under design conditions and operating conditions respectively.

[0011] Further, the step of controlling the air separation device to perform molecular sieve load adjustment operation based on the difference includes: Calculating the ratio of the difference to the initial adsorption cycle; comparing the ratio with a first preset ratio range; If it exceeds the first preset ratio range, the adsorption period is extended, and the regeneration gas volume is simultaneously reduced according to the comprehensive coefficient of the air volume and the adsorption period; If it is lower than the first preset ratio range, the adsorption cycle is reduced, and the regeneration gas volume is increased synchronously according to the comprehensive coefficient of the air volume and the adsorption cycle.

[0012] Further, after the step of controlling the air separation device to perform molecular sieve load adjustment operation based on the difference, the method further comprises: Get weather data; Determining whether to perform automatic adjustment based on the meteorological data; If automatic adjustment is required, the air separation device is controlled to perform molecular sieve load adjustment operation.

[0013] The second aspect of the present application provides an automatic molecular sieve load adjustment system, comprising: An acquisition module is used to obtain various operating parameters of the air separation unit under the current operating conditions; A judgment module, used for judging whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; A calculation module, for calculating the remaining effective adsorption time of the corresponding component in the current adsorption cycle based on the operating parameters if the trigger condition is met; A difference calculation module, used to calculate the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; A control module is used to control the air separation device to perform molecular sieve load adjustment operation based on the difference.

[0014] The third aspect of the present application also includes a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.

[0015] The fourth aspect of the present application also includes a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of any of the above methods when executed by a processor.

[0016] Beneficial Effects This application dynamically determines the adjustment requirements during the adsorption process by real-time monitoring of the operating parameters of the air separation unit, and calculates the remaining effective adsorption time to adjust the adsorption cycle. This method significantly improves the adsorption efficiency, ensures that the molecular sieve can work efficiently in each cycle, avoids performance degradation due to adsorption saturation, reduces unnecessary energy consumption and waste of resources, and extends the life of the equipment. The system can also automatically adapt to different working conditions to ensure that the molecular sieve is always in the best working state, thereby improving the adsorption efficiency and preventing equipment damage or parking accidents caused by problems such as excessive moisture. Based on the various parameters in operation, the operation strategy can be continuously optimized to form a virtuous cycle, extending the service life of the molecular sieve, reducing the number of regenerations, and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic flow chart of a method for automatically adjusting molecular sieve load according to an embodiment of the present application; Figure 2 This is a schematic structural diagram of a system for automatically adjusting molecular sieve load according to an embodiment of the present application; Figure 3 A schematic block diagram of the structure of a computer device according to an embodiment of the present application.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of features, integers, steps, operations, elements, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, components, and / or groups thereof. It should be understood that when an element is said to be "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any module and all combinations of one or more associated listed items.

[0021] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0022] Reference Figure 1 The embodiment of the present invention provides a method for automatically adjusting the molecular sieve load, comprising steps S1-S5, specifically: S1. Obtain various operating parameters of the air separation unit under the current operating conditions; S2. judging whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; S3. If the trigger condition is met, the remaining effective adsorption time of the corresponding component in the current adsorption cycle is calculated based on the operating parameters; S4, calculating the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; S5. Based on the difference, the air separation device is controlled to perform molecular sieve load adjustment operation.

[0023] In step S1, obtaining various operating parameters under the current operating conditions of the air separation unit is the basis for realizing automatic adjustment of the molecular sieve load. It is specifically realized by installing and configuring various sensors, which are used to monitor and collect key data in real time, such as intake volume, intake temperature, air moisture content, and the content of the first gas specified in the atmosphere. For example, the intake volume is measured by a flow meter, and the content of the first gas in the atmosphere determined by a gas analyzer may include gases such as carbon dioxide, acetylene, ethylene or nitrous oxide. This scheme takes carbon dioxide as an example, and the temperature sensor monitors the intake temperature. In order to obtain the air moisture content under the current operating conditions, the current intake temperature and pressure values ​​are first obtained through a temperature sensor and a pressure sensor. Assuming that the current intake temperature is 25°C and the pressure is 600kPa, the corresponding curve (25°C curve) can be identified in the preset relationship curve diagram, and the pressure point of 600kPa is found on the curve, and the corresponding air moisture content is read to be about 0.0058g / Nm³. Or based on the established mapping table, the corresponding mapping relationship is identified to obtain the numerical value of the air content, which will serve as one of the important bases for subsequent judgment on whether the trigger condition is met.

[0024] The advantage of this step is that it ensures that the system can grasp the current working conditions in real time, thus providing an accurate basis for subsequent judgment on whether the molecular sieve load needs to be adjusted. Through accurate data collection and monitoring, it is possible to timely discover and respond to changes in working conditions, avoid performance degradation caused by adsorption saturation, improve system stability and efficiency, and reduce unnecessary energy consumption and equipment wear. In addition, detailed data records also provide a solid foundation for subsequent optimization.

[0025] As described in step S2 above, first, the system obtains the current intake air volume, intake air temperature, air moisture content, and atmospheric CO 2 These parameters are monitored in real time by sensors and transmitted to the control system (such as DCS (Distributed Control System) or PLC (Distributed Control System)) for processing.

[0026] The triggering of the triggering condition includes a first triggering condition, that is, based on the intake air volume and the first gas content (such as CO 2 ) trigger condition; Assume that the intake air volume under the current working condition is 5000Nm³ / h and the atmospheric CO2 content is 450ppm. According to the design working condition, the first intake air volume range is set to 4000-6000Nm³ / h and the first gas content threshold range is 300-500ppm. The system first obtains the current intake air volume and atmospheric CO 2 content, and judge whether the intake air volume is within the first intake air volume range and whether the atmospheric CO2 Whether the intake air volume is within the first gas content threshold range. If the intake air volume is not within the first intake air volume range (for example, lower than 4000Nm³ / h or higher than 6000Nm³ / h), or the atmospheric CO 2 If the content is not within the first gas content threshold range (for example, less than 300 ppm or greater than 500 ppm), it is determined that the trigger condition is met. At this time, the system needs to adjust the load of the molecular sieve to adapt to the new working conditions.

[0027] Alternatively, the second trigger condition, i.e., the trigger condition based on the intake air temperature and water content, assumes that the intake air temperature under the current operating condition is 35°C and the air water content is 0.01g / Nm³. According to the design operating conditions, the set first temperature range is 20-30°C, and the first liquid content threshold range is 0.005-0.008g / Nm³. The system first obtains the current intake air temperature and air water content, and determines whether the intake air temperature is within the first temperature range and whether the air water content is within the first liquid content threshold range. If the intake air temperature is not within the first temperature range (e.g., below 20°C or above 30°C), or the air water content is not within the first liquid content threshold range (e.g., below 0.005g / Nm³ or above 0.008g / Nm³), it is determined that the trigger condition is met. At this point, the system needs to adjust the load of the molecular sieve to adapt to the new operating conditions. In particular, the air water content can be obtained by means of a chart or curve. For example, at 25°C, when the pressure is 600kPa, the air moisture content is about 0.0058g / Nm³; and at 35°C, when the pressure is 600kPa, the air moisture content is about 0.0132g / Nm³. By finding the curve data points at the corresponding temperature and pressure, the air moisture content under the current working conditions can be accurately read.

[0028] This trigger condition judgment method based on operating parameters can respond to changes in operating conditions in real time to ensure that the system is always in the best operating state. 2 Through real-time monitoring of key parameters such as moisture content, the system can detect abnormal conditions at the first time and take corresponding adjustment measures. Secondly, this method improves the stability and reliability of the system. Through precise data collection and analysis, the system can avoid performance degradation caused by adsorption saturation, extend the service life of the equipment, and reduce unnecessary energy consumption and equipment wear. In addition, detailed data records also provide a solid foundation for subsequent optimization. By using charts to determine the moisture content of the air, you can more intuitively and accurately understand the moisture content of the air under the current working conditions, further improving the reliability and adaptability of the system.

[0029] As described in step S3 above, if the first trigger condition is triggered, the remaining effective adsorption time based on the first gas content is calculated, where CO2 For example, the first remaining effective adsorption time is calculated based on the following formula: T 剩余1 =(T 总 ×Q 空气 ×V CO2 -t 1 ×Q 空气 ×V CO2 ) / Q' 空气 / V' CO2 -t 2 ; Among them, T 剩余1 Adsorption of CO under current operating conditions 2 The first remaining effective adsorption time (in min); T 总 is the total adsorption time under design conditions (considering a 20% margin); t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 They are the air volumes under design conditions and operating conditions (in Nm 3 / h); V CO2 and V' CO2 are atmospheric CO under design conditions and operating conditions respectively. 2 Content (unit: ppm). Where, (T 总 ×Q 空气 ×V CO2 -t 1 ×Q 空气 ×V CO2 ) / Q' 空气 / V' CO2 Represents the remaining adsorption time under variable working conditions, t 2 It is the adsorption time after the operating condition changes obtained through real-time accumulation. Its value starts from the moment of the current operating condition change and starts from 0.

[0030] Taking a certain project parameter as an example, the air separation unit changes its operating condition (meets the trigger condition) after 2 hours (120 minutes) of adsorption. 2 is 0, then the T after the change can be calculated based on the above formula 剩余1 Then the adsorption time after the change is cumulatively reduced, and the adsorption CO under the current operating conditions is updated in real time. 2 The first remaining effective adsorption time, for example, after the change of conditions, adsorption continued for 2.5 (150 minutes) hours (delay of 30 minutes), then the remaining adsorption time under the current working condition is calculated as: T 剩余1= (288×4200×400-120×4200×400)÷3600÷400-150=46min. (In which, referring to the formula of the first remaining effective adsorption time, in this example, 288: total adsorption time under design conditions, the total time that the system can work continuously under the optimal design conditions; 4200: air volume under design conditions (unit: cubic meter / hour, m³ / h). This is the air intake capacity of the system under design conditions; 400: the content of the first gas in the atmosphere under design conditions (unit: ppm). This is the concentration of the first gas in the air entering the system; 120: adsorption time before the change of operating conditions (unit: minutes). This is the time the system has been running and adsorbing the first gas before the change of operating conditions; 3600: air volume under operating conditions (unit: cubic meter / hour, m³ / h). This is the actual air intake capacity of the system under current operating conditions; 400: the content of the first gas in the atmosphere under operating conditions (unit: ppm or other concentration units). This is the concentration of the first gas in the air entering the system under current operating conditions; adsorption time after changing operating conditions (unit: minutes). This is the time the system has been running and adsorbing the first gas after the change of operating conditions.) Similarly, if the second operating condition changes, then t 1 The value of will include the time of continued adsorption after the first change of working condition. When the second change of working condition occurs, the current t 1 +t 2 The value of is reassigned to t 1 , t 2 The value of is re-accumulated based on the current change in condition, and the first remaining effective adsorption time is updated based on the above formula; and so on, the corresponding first remaining effective adsorption time is iteratively calculated each time the operating condition changes.

[0031] If the second trigger condition is triggered, the second remaining effective adsorption time is calculated based on the following formula: The second remaining effective adsorption time is calculated based on the following formula: T 剩余2 =(T 总 ×Q 空气 ×V 水 -t 1 ×Q 空气 ×V 水 ) / Q' 空气 / V' 水 -t 2 ; Among them, T 剩余2 T is the second remaining effective adsorption time of water under operating conditions; 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes;空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 水 and V' 水 are the air moisture content under design conditions and operating conditions respectively.

[0032] Taking a certain project parameter as an example, the air conditioner stopped due to a fault after 2 hours of adsorption under the variable working condition, and adsorbed for another 10 minutes after the working condition was changed. The remaining adsorption time is: T 剩余2 = (288 × 4200 × 0.0027-120 × 4200 × 0.0027) ÷ 3600 ÷ 0.0156-10 = 24min. The specific calculation process refers to the calculation iteration process of the first remaining effective adsorption time, which will not be described in detail here.

[0033] The adsorption remaining time refers to the time during which the molecular sieve can continue to effectively adsorb specific impurities (such as carbon dioxide CO) under the current operating conditions. 2 and water 2 O) remaining time. Total adsorption time under design conditions: the time determined under ideal conditions, usually including a certain safety margin (such as 20%) to ensure that the molecular sieve will not be saturated prematurely under any circumstances. Total adsorption time under operating conditions: the time dynamically adjusted according to real-time monitoring data, which may be shorter or longer than the time under design conditions, depending on the actual operating conditions. Variable conditions refer to changes in system operating parameters, which are different from the design conditions or initially set normal operating conditions. In industrial equipment and control systems, design conditions are usually based on parameter settings under ideal conditions, but in actual operation, due to changes in the external environment, process requirements or other factors, the operating parameters of the system may deviate from the design values. This state is called "variable conditions."

[0034] Through the above calculation method, the system can evaluate the remaining effective adsorption time in the current adsorption cycle in real time, so as to adjust the working state of the molecular sieve in time. The advantage of this method is that it improves the response speed and accuracy of the system and ensures that the molecular sieve can maintain the best adsorption performance under different working conditions. Specifically, two different trigger conditions trigger two different calculation methods, including CO based 2 The calculation of the remaining effective adsorption time of the content and the water content of the air enables the system to detect the situation where the adsorption capacity is close to saturation in different situations at the first time and take corresponding adjustment measures. For example, when the adsorption time is insufficient, the system can shorten the adsorption cycle and increase the regeneration frequency; when the adsorption time is sufficient, the system can extend the adsorption cycle to reduce unnecessary regeneration operations and save energy and resources. In addition, detailed data recording and analysis also provide a solid foundation for subsequent optimization, further improving the stability and reliability of the system. If two situations are identified at the same time (carbon dioxide CO2 and water H 2 O), and use the calculation result with a shorter remaining adsorption time as the basis for subsequent judgment.

[0035] As described in step S4 above, the adsorption cycle refers to the time period from the start to the end of one adsorption process and the preparation to enter the next regeneration process. It includes the following stages: 1. Adsorption stage: The molecular sieve adsorbs impurities (such as CO 2 , moisture). 2. Switching stage: When the molecular sieve reaches the saturated state, the system switches to the standby molecular sieve for continuous adsorption, and at the same time, regenerates the saturated molecular sieve. 3. Regeneration stage: Through steps such as heating and cold blowing, remove the impurities adsorbed on the molecular sieve and restore its adsorption capacity. 4. Cooling stage: The regenerated molecular sieve needs to be cooled to an appropriate working temperature for reuse.

[0036] The initial adsorption cycle refers to the time length of a complete adsorption cycle of the molecular sieve under ideal conditions determined in the design stage. For example, assume the initial adsorption cycle is 408 minutes (including 288 minutes of adsorption time, 60 minutes of regeneration time, and 60 minutes of cooling time). Remaining effective adsorption time: This is the time that the molecular sieve can continue to effectively adsorb impurities calculated based on the current working conditions. This value is calculated through a formula in step S3.

[0037] The current adsorption cycle T 当前 can be calculated by the following formula: T 当前 =T 总 −t 1 +T 剩余； where T 总 is the total adsorption time under the design working conditions (e.g., 288 minutes). t 1 is the time already adsorbed before the change of working conditions (e.g., 150 minutes). T 剩余 is the calculated remaining effective adsorption time (such as T 剩余1 or T 剩余2 ).

[0038] At this time, the difference ΔT can be calculated by the following formula: ΔT=T 初始 −T 当前, for example, ΔT=408−378=30 minutes. This means that the current adsorption cycle is 30 minutes shorter than the initial adsorption cycle. By calculating the difference between the current adsorption cycle and the initial adsorption cycle, the system can evaluate the working status of the molecular sieve in real time and take corresponding adjustment measures. For example, if the difference is large and positive (that is, the current adsorption cycle is short), the system can make full use of the adsorption capacity of the molecular sieve by extending the adsorption cycle, reduce unnecessary regeneration operations, and thus save energy and resources. If the difference is small or negative (that is, the current adsorption cycle is long), the system can prevent the molecular sieve from degrading due to adsorption saturation by shortening the adsorption cycle and increasing the regeneration frequency. This dynamic adjustment mechanism not only improves the response speed and accuracy of the system, but also ensures that the molecular sieve can maintain optimal adsorption performance under different working conditions. In addition, detailed data recording and analysis also provide a solid foundation for subsequent optimization, further improving the stability and reliability of the system.

[0039] As described in step S5 above, if an increase in intake air volume or atmospheric CO is detected 2 When the content increases (that is, the intake air volume is not within and greater than the first intake air volume range or the first gas content is not within and greater than the first gas content threshold range), the real-time calculation of the first remaining adsorption time is triggered. According to the calculation result, when the current adsorption cycle is lower than the original initial adsorption cycle (for example, 10%), the adsorption cycle in the timing control program will be automatically reduced according to this time. Then, according to the adjusted adsorption cycle, the heating and cold blowing time will be reduced in the same proportion according to the preset proportional relationship, and the regeneration gas volume will be increased simultaneously according to the comprehensive coefficient of the air volume and the adsorption cycle to ensure sufficient adsorption capacity and purity unqualified loss.

[0040] When a reduction in intake air or atmospheric CO is detected 2 When the content decreases (that is, the intake air volume is not within and is less than the first intake air volume range or the first gas content is not within and is less than the first gas content threshold range), the real-time calculation of the first remaining adsorption time is triggered. According to the calculation result, when the current adsorption cycle exceeds the initial adsorption cycle (for example, 10%), the initial adsorption cycle in the timing control program will be automatically extended according to this time, and then the heating and cold blowing time will be increased in proportion to the adjusted adsorption cycle according to the preset proportional relationship. Similarly, the regeneration gas volume is simultaneously reduced according to the comprehensive coefficient of the air volume and the adsorption cycle, and the system fluctuation period will also be reduced synchronously to avoid unnecessary energy waste and loss of unqualified purity.

[0041] When it is detected that the intake air temperature rises or the water content increases (that is, the intake air temperature is not in and greater than the first temperature range or the first liquid content is not in and greater than the first liquid content threshold range), the real-time calculation of the second remaining adsorption time is triggered, and the second remaining adsorption time is calculated in real time according to the water content curve or the corresponding mapping relationship. When it is further obtained according to the calculation result that the current adsorption cycle is lower than the original design (for example, 10%), the adsorption cycle in the timing control program will be automatically reduced according to this time, and then according to the adjusted adsorption cycle, the heating and cold blowing time will be reduced in the same proportion according to the preset proportional relationship. Similarly, the regeneration gas volume is synchronously increased according to the comprehensive coefficient of the air volume and the adsorption cycle to ensure sufficient adsorption capacity and purity failure loss.

[0042] In addition, if the ratio of the difference to the initial adsorption cycle exceeds the maximum preset ratio, moisture and other impurities may not be effectively removed, and then brought into the cryogenic cold box, causing equipment damage or large-scale shutdown losses of the device. Therefore, when the maximum preset ratio is exceeded, the system needs to execute an interlocking mechanism to protect the safe operation of the equipment and system. At this time, the interlocking system is executed, and then the control system issues an audible and visual alarm, automatically shutting down downstream key equipment such as the cryogenic distillation tower and heat exchanger to prevent moisture or other impurities from entering the cryogenic cold box. This can prevent moisture from being brought into the cryogenic cold box, causing equipment damage or large-scale shutdown losses of the device.

[0043] When it is detected that the intake air temperature increases or the water content decreases (that is, the intake air temperature is not in and is less than the first temperature range or the first liquid content is not in and is less than the first liquid content threshold range), the real-time calculation of the second remaining adsorption time is triggered, and the second remaining adsorption time is calculated in real time according to the water content curve or the corresponding mapping relationship. When it is further obtained according to the calculation result that the current adsorption cycle is higher than the original design (for example, 10%), the adsorption cycle in the timing control program will be automatically extended according to this time, the corresponding heating and cold blowing time will increase in the same proportion, the regeneration gas volume will be synchronously reduced according to the comprehensive coefficient of the air volume and the adsorption cycle, and the system fluctuation cycle will also be synchronously reduced to avoid unnecessary energy waste and purity failure loss.

[0044] In addition, in case of extreme weather or other special circumstances, the system will automatically adjust the heating time and cold blowing time of the regeneration gas to ensure that the molecular sieve can quickly recover its activity. In addition, all operating conditions in the whole process will be recorded and continuously optimized and improved through the intelligent management system to form a virtuous cycle.

[0045] In addition, after calculating the relevant parameters corresponding to the adjusted adsorption cycle, the data after the relevant parameters are adjusted are reviewed in real time. If there are corresponding values ​​that do not meet the adjustment parameters, it is determined whether manual intervention is required. If manual intervention is required, the corresponding alarm is activated to enable the corresponding operator to adjust the external working conditions.

[0046] In one embodiment, the specified operating parameter value includes an intake air volume and a first gas content, and the step of judging whether the specified operating parameter value in the adsorption process meets a trigger condition based on the operating parameter includes: S10, the specified operating parameter value includes the intake air volume and the first gas content, and the step of judging whether the specified operating parameter value in the adsorption process meets the trigger condition based on the operating parameter includes: S11, obtaining the current intake air volume and the first gas content; S12, determining whether the intake air amount is within a first intake air amount range and whether the first gas content is within a first gas content threshold range; S13: If the intake air amount is not within the first intake air amount range or the first gas content is not within the first gas content threshold range, it is determined that the trigger condition is met.

[0047] In this embodiment, the system monitors the intake air volume and the first gas content (such as CO 2 ) to determine whether adjustment is required during the adsorption process. The system first obtains the actual values ​​of the current intake volume and the first gas content to ensure real-time grasp of the current operating conditions. Next, the system determines whether these parameters are within the preset safety range, that is, checks whether the intake volume is within the first intake volume range (for example, 4000-6000 Nm³ / h), and whether the first gas content is within the first gas content threshold range (for example, 300-500 ppm). If any parameter exceeds its preset range (for example, the intake volume is less than 4000 Nm³ / h or greater than 6000 Nm³ / h, or the first gas content is less than 300 ppm or greater than 500 ppm), the system determines that the trigger condition is met and needs to perform corresponding calculation operations to determine whether to adjust. This judgment method based on real-time data and preset ranges can ensure that the molecular sieve adsorber can operate efficiently and stably under different operating conditions, avoiding performance degradation or equipment damage caused by abnormal parameters. In this way, the system realizes dynamic adjustment and optimization management of the air separation unit to ensure the stability and reliability of the entire process. All operating status data will be recorded and continuously optimized and improved through the intelligent management system, forming a virtuous circle, thereby improving the system's response speed and accuracy, extending equipment life, and reducing operating costs.

[0048] In one embodiment, the remaining effective adsorption time includes a first remaining effective adsorption time, and if the trigger condition is met, the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters includes: S20, calculating the first remaining effective adsorption time based on the following formula: T 剩余1 =(T 总 ×Q 空气 ×V 第一气体 -t 1 ×Q 空气 ×V 第一气体 ) / Q' 空气 / V' 第一气体 )-t 2 ; Among them, T 剩余1 is the first remaining effective adsorption time for adsorbing the first gas under the current operating condition; T 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 第一气体 and V' 第一气体 are the first gas content in the atmosphere under design conditions and operating conditions, respectively.

[0049] In this embodiment, the first gas is CO 2 For example, the system first obtains the current intake volume, atmospheric CO 2 content and other operating parameters, and judge whether the trigger conditions are met based on these parameters. If the trigger conditions are met, the system will use the above formula to calculate the first remaining effective adsorption time. For example, assuming that the total adsorption time under the design condition is 288 minutes, the adsorption time before the change condition is 150 minutes, the total air volume under the design condition is 4200 Nm³ / h, and the atmospheric CO 2 The content is 400 ppm, while the total air volume under operating conditions is 5000 Nm³ / h, and the atmospheric CO 2 The system will substitute these values ​​for calculation and obtain the adsorption of CO under the current operating conditions. 2The first remaining effective adsorption time. If the calculation result shows that the remaining effective adsorption time is short, it means that the adsorption capacity of the molecular sieve is close to saturation, and the adsorption cycle or regeneration frequency needs to be adjusted to ensure the efficient operation of the system. Through this precise calculation method, the system can evaluate the working status of the molecular sieve in real time, predict the limit of the theoretical "transition point" of the molecular sieve in advance, and take corresponding adjustment measures to avoid performance degradation or equipment damage due to adsorption saturation. All operating status data will be recorded and continuously optimized and improved through the intelligent management system to form a virtuous circle, thereby improving the response speed and accuracy of the system, extending the service life of the equipment, and reducing operating costs.

[0050] In one embodiment, the specified operating parameter value includes intake air temperature and water content, and the step of judging whether the specified operating parameter value in the adsorption process meets the trigger condition based on the operating parameter includes: S30, obtaining the current intake air temperature and the first liquid content; S31, determining whether the intake air temperature is within a first temperature range and whether the first liquid content is within a first liquid content threshold range; S32: If the intake air temperature is not within the first temperature range or the first liquid content is not within the first liquid content threshold range, it is determined that the trigger condition is met.

[0051] In this embodiment, the system determines whether adjustment is required during the adsorption process by monitoring the intake air temperature and the first liquid content (such as the water content in the air). The system first obtains the actual values ​​of the current intake air temperature and the first liquid content to ensure that the current working conditions are mastered in real time. Then, the system determines whether these parameters are within the preset safety range, that is, checks whether the intake air temperature is within the first temperature range (for example, 20-30°C), and whether the first liquid content (such as the water content in the air) is within the first liquid content threshold range (for example, 0.005-0.008 g / Nm³). If any parameter exceeds its preset range (for example, the intake air temperature is lower than 20°C or higher than 30°C, or the air water content is lower than 0.005 g / Nm³ or higher than 0.008 g / Nm³), the system determines that the trigger condition is met and the corresponding adjustment operation needs to be performed.

[0052] This judgment method based on real-time data and preset ranges can ensure that the molecular sieve adsorber can operate efficiently and stably under different operating conditions, avoiding performance degradation or equipment damage caused by abnormal parameters. For example, when the inlet temperature is too high or the air moisture content is too high, the system can shorten the adsorption cycle and increase the regeneration frequency to ensure that the molecular sieve can restore its adsorption capacity in time. All operating status data will be recorded and continuously optimized and improved through the intelligent management system to form a virtuous circle, thereby improving the response speed and accuracy of the system, extending the service life of the equipment, and reducing operating costs. This not only improves the overall performance of the system, but also enhances the ability to cope with extreme weather or other special situations.

[0053] In one embodiment, the first liquid includes water, the remaining effective adsorption time includes a second remaining effective adsorption time, and the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters if the trigger condition is met includes: S40, calculating the second remaining effective adsorption time based on the following formula: T 剩余2 =(T 总 ×Q 空气 ×V 水 -t 1 ×Q 空气 ×V 水 ) / Q' 空气 / V' 水 -t 2 ; Among them, T 剩余2 T is the second remaining effective adsorption time of water under operating conditions; 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 水 and V' 水 are the air moisture content under design conditions and operating conditions respectively.

[0054] In this embodiment, the system calculates the second remaining effective adsorption time (T 剩余2 ):T 剩余2 =(T 总 ×Q 空气 ×V 水 -t 1 ×Q 空气 ×V 水 ) / Q' 空气 / V' 水 -t 2; The system first monitors and obtains the actual values ​​of the current intake air temperature and air moisture content in real time through sensors. Then the current intake air temperature is compared with the preset first temperature range (e.g., 20-30°C), and the current air moisture content is compared with the preset first liquid content threshold range (e.g., 0.005-0.008g / Nm³). If the intake air temperature or air moisture content exceeds its preset range, the system determines that the trigger condition is met and the working parameters of the molecular sieve need to be adjusted. Once it is determined that adjustment is required, the system will use the above formula to calculate the second remaining effective adsorption time. Assuming that the total adsorption time under the design condition is 288 minutes, the adsorption time before the change condition is 150 minutes, the total air volume under the design condition is 4200 Nm³ / h, the air moisture content is 0.005 g / Nm³, and the total air volume under the operating condition is 5000 Nm³ / h, and the air moisture content is 0.01 g / Nm³. The system will substitute these values ​​for calculation and derive the second remaining effective adsorption time of adsorbed water under the current operating conditions. Through this precise calculation method, the system can evaluate the adsorption capacity of the molecular sieve under the current operating conditions in real time and take corresponding adjustment measures to avoid performance degradation or equipment damage due to adsorption saturation. All operating status data will be recorded and continuously optimized and improved through the intelligent management system to form a virtuous circle, thereby improving the response speed and accuracy of the system, extending the service life of the equipment, and reducing operating costs. This not only improves the overall performance of the system, but also enhances the ability to cope with extreme weather or other special situations.

[0055] In one embodiment, the step of controlling the air separation unit to perform molecular sieve load adjustment operation based on the difference includes: S50, calculating the ratio of the difference to the initial adsorption period; S51, comparing the ratio with a first preset ratio range; S52, if it exceeds the first preset ratio range, extend the adsorption period, and simultaneously reduce the regeneration gas volume according to the comprehensive coefficient of the air volume and the adsorption period; S53. If it is lower than the first preset ratio range, reduce the adsorption cycle, and simultaneously increase the regeneration gas volume according to the comprehensive coefficient of the air volume and the adsorption cycle.

[0056] In this embodiment, the system dynamically adjusts the load of the molecular sieve by calculating the difference between the current adsorption cycle and the initial adsorption cycle to ensure the efficient operation of the system. First, based on the difference between the current adsorption cycle and the initial adsorption cycle, the system determines the size relationship between the difference and the first preset ratio range, for example, the first preset ratio range is ±10%. If it exceeds this range, it indicates that the current adsorption cycle is too short, and the system will adjust the cycle, and at the same time, it includes extending the adsorption cycle and the time of heating and cold blowing according to the preset ratio, and synchronously reducing the amount of regenerated gas according to the comprehensive coefficient of the air volume and the adsorption cycle to reduce energy waste and purity failure loss. This adjustment can make full use of the adsorption capacity of the molecular sieve and avoid the increase in energy consumption caused by frequent regeneration. If it is lower than the first preset ratio range, it indicates that the current adsorption cycle is too long, and the system will reduce the adsorption cycle and the time of heating and cold blowing, and synchronously increase the amount of regenerated gas according to the comprehensive coefficient of the air volume and the adsorption cycle to achieve the preset adsorption capacity and reduce the purity failure loss. For example, if the current adsorption cycle is 67 minutes, the difference = 67-60 = 7, and the ratio = 60 / 7≈0.1167; the ratio 0.1167>0.1, so it meets the condition of "greater than or equal to +10%"; if the current adsorption cycle is 55 minutes, the difference = 55-60 = -5, the ratio = 60 / 5≈-0.0833, and the ratio -0.0833>-0.10, so it does not meet the condition of "less than or equal to -10%". If the adsorption cycle becomes 53 minutes at this time, then the difference = 53-60 = -7, the ratio = -7 / 60≈-0.1167, and the ratio -0.1167<-0.1, so it meets the condition of "less than or equal to -10%".

[0057] If the ratio is ≥ +10%, the adsorption cycle is extended and the regeneration gas volume is reduced synchronously according to the comprehensive coefficient of the air volume and the adsorption cycle.

[0058] If the ratio is ≤ -10%, the adsorption cycle is reduced and the regeneration gas volume is increased synchronously according to the comprehensive coefficient of the air volume and the adsorption cycle.

[0059] If the ratio is between -10% and +10%, the existing adsorption cycle and related parameters are kept unchanged, or fine-tuned to maintain stable operation of the system.

[0060] This dynamic adjustment mechanism not only improves the response speed and accuracy of the system, but also ensures that the molecular sieve can maintain the best adsorption performance under different working conditions, thereby improving the overall operating efficiency, reducing operating costs, and extending the service life of the equipment. All operating status data will be recorded and continuously optimized and improved through the intelligent management system to form a virtuous circle. The adjustment parameters and adjustment degree in the adjustment process can be determined based on the specific ratio of the difference calculated.

[0061] In one embodiment, after the step of controlling the air separation device to perform molecular sieve load adjustment operation based on the difference, the following steps are included: S60, obtaining meteorological data; S61, judging whether to perform automatic adjustment based on the meteorological data; S62: If automatic adjustment is required, control the air separation device to perform molecular sieve load adjustment operation.

[0062] In this embodiment, the system can obtain the current meteorological data through a third-party interface. These meteorological data include, but are not limited to, key parameters such as temperature, humidity, wind speed, and atmospheric pressure at present and within a specified time in the future. By monitoring these external environmental factors in real time, the system can have a more comprehensive understanding of the impact of the current working conditions on the adsorption performance of the molecular sieve. Based on the acquired meteorological data, it is determined whether automatic adjustment is required. For example, if a significant increase in temperature or a substantial increase in air humidity is detected, this may cause an increase in air moisture content, thereby increasing the adsorption burden of the molecular sieve. Or in the future, the estimated corresponding meteorological values ​​show an increase or decrease in the formulated speed. In this case, the system will determine that automatic adjustment is required to ensure that the molecular sieve can continue to operate efficiently under the new working conditions. Through this dynamic adjustment mechanism based on meteorological data, the system can not only maintain efficient operation under conventional working conditions, but also flexibly respond to extreme weather or other special situations to ensure that the molecular sieve can maintain optimal performance under different environments. All operating status data and meteorological data will be recorded in detail and continuously optimized and improved through an intelligent management system to form a virtuous circle, thereby improving the response speed and accuracy of the system, extending the service life of the equipment, and reducing operating costs.

[0063] Reference Figure 2 , is a structural block diagram of an automatic molecular sieve load adjustment system in one embodiment of the present application, the system includes: The acquisition module 100 is used to acquire various operating parameters of the air separation unit under the current operating conditions; A judgment module 200, for judging whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; A calculation module 300, for calculating the remaining effective adsorption time of the corresponding component in the current adsorption cycle based on the operating parameters if the trigger condition is met; A difference calculation module 400, used to calculate the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; The control module 500 is used to control the air separation device to perform molecular sieve load adjustment operation based on the difference.

[0064] Furthermore, the judgment module 200 includes a first judgment unit, which is used to: Obtaining the current intake air volume and the first gas content; determining whether the intake air amount is within a first intake air amount range and whether the first gas content is within a first gas content threshold range; If the intake air amount is not within the first intake air amount range or the first gas content is not within the first gas content threshold range, it is determined that the trigger condition is met.

[0065] Furthermore, the calculation module 300 includes a first calculation unit, which is used to: The first remaining effective adsorption time is calculated based on the following formula: T 剩余1 =(T 总 ×Q 空气 ×V 第一气体 -t 1 ×Q 空气 ×V 第一气体 ) / Q' 空气 / V' 第一气体 )-t 2 ; Among them, T 剩余1 is the first remaining effective adsorption time for adsorbing the first gas under the current operating condition; T 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 第一气体 and V' 第一气体 are the first gas content in the atmosphere under design conditions and operating conditions, respectively.

[0066] Furthermore, the judging module 200 further includes a second judging unit, configured to: Obtaining current intake air temperature and first liquid content; determining whether the intake air temperature is within a first temperature range and whether the first liquid content is within a first liquid content threshold range; If the intake air temperature is not within the first temperature range or the first liquid content is not within the first liquid content threshold range, it is determined that the trigger condition is met.

[0067] Furthermore, the calculation module 300 further includes a second calculation unit for The second remaining effective adsorption time is calculated based on the following formula: T 剩余2 =(T 总 ×Q 空气 ×V 水 -t1 ×Q 空气 ×V 水 ) / Q' 空气 / V' 水 -t 2 ; Among them, T 剩余2 T is the second remaining effective adsorption time of water under operating conditions; 总 is the total adsorption time under design conditions; t 1 is the adsorption time before the working condition changes; t 2 Q is the adsorption time after the working condition changes; 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 水 and V' 水 are the air moisture content under design conditions and operating conditions respectively.

[0068] Furthermore, the control module 500 further includes an operation adjustment unit, which is used to: Calculating the ratio of the difference to the initial adsorption cycle; comparing the ratio with a first preset ratio range; If it exceeds the first preset ratio range, the adsorption period is extended, and the regeneration gas volume is simultaneously reduced according to the comprehensive coefficient of the air volume and the adsorption period; If it is lower than the first preset ratio range, the adsorption cycle is reduced, and the regeneration gas volume is increased synchronously according to the comprehensive coefficient of the air volume and the adsorption cycle.

[0069] Furthermore, the system further comprises a meteorological processing module, wherein the meteorological processing module is used to: Get weather data; Determining whether to perform automatic adjustment based on the meteorological data; If automatic adjustment is required, the air separation device is controlled to perform molecular sieve load adjustment operation.

[0070] Reference Figure 3 In an embodiment of the present application, a computer device is also provided. The computer device may be a server, and its internal structure may be as follows: Figure 3As shown. The computer device includes a processor, an internal memory, a storage medium (non-volatile storage medium) and a network interface connected via a system bus. Among them, the processor designed by the computer is used to provide computing and control capabilities. The memory of the computer device includes the above-mentioned storage medium (non-volatile storage medium) and the internal memory. The storage medium (non-volatile storage medium) stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the storage medium (non-volatile storage medium). The database of the computer device is used to store usage data during a method for automatically adjusting the molecular sieve load, etc. The network interface of the computer device is used to communicate with an external terminal through a network connection. Furthermore, the above-mentioned computer device can also be provided with an input device and a display screen, etc. When the above-mentioned computer program is executed by a processor, a method for automatically adjusting the molecular sieve load is implemented, which includes the following steps: obtaining various operating parameters under the current operating conditions of the air separation device; judging whether the operating parameter value specified in the adsorption process meets the trigger condition based on the operating parameters; if the trigger condition for calculating the remaining effective adsorption time is met, calculating the remaining effective adsorption time of the corresponding component adsorbed in the current adsorption cycle based on the operating parameters; calculating the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; and controlling the air separation device to perform molecular sieve load adjustment operation based on the difference.

[0071] Those skilled in the art will understand that Figure 3 The structure shown in is merely a block diagram of a portion of the structure related to the present application solution and does not constitute a limitation on the computer device to which the present application solution is applied.

[0072] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, a method for automatically adjusting the molecular sieve load is implemented, including the following steps: obtaining various operating parameters under the current operating conditions of the air separation unit; judging whether the operating parameter value specified in the adsorption process meets the trigger condition based on the operating parameters; if the trigger condition for calculating the remaining effective adsorption time is met, calculating the remaining effective adsorption time of the corresponding component adsorbed in the current adsorption cycle based on the operating parameters; calculating the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; and controlling the air separation unit to perform molecular sieve load adjustment operation based on the difference. It can be understood that the computer-readable storage medium in this embodiment can be a volatile readable storage medium or a non-volatile readable storage medium.

[0073] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media provided in this application and used in the embodiments may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0074] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, device, article or method. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, device, article or method including the element.

[0075] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for automatically adjusting molecular sieve load, characterized in that: The method comprises: Obtain various operating parameters of the air separation unit under the current operating conditions; Determining whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; If the trigger condition is met, the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle is calculated based on the operating parameters; Calculate the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; The air separation device is controlled based on the difference to perform molecular sieve load adjustment operation.

2. The method for automatically adjusting molecular sieve load according to claim 1, characterized in that: The specified operating parameter value includes an intake air volume and a first gas content, and the step of judging whether the specified operating parameter value in the adsorption process meets a trigger condition based on the operating parameter includes: Obtaining the current intake air volume and the first gas content; determining whether the intake air amount is within a first intake air amount range and whether the first gas content is within a first gas content threshold range; If the intake air amount is not within the first intake air amount range or the first gas content is not within the first gas content threshold range, it is determined that the trigger condition is met.

3. The method for automatically adjusting molecular sieve load according to claim 2, characterized in that: The remaining effective adsorption time includes a first remaining effective adsorption time. If the trigger condition is met, the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters includes: The first remaining effective adsorption time is calculated based on the following formula: T 剩余1 =(T 总 ×Q 空气 ×V 第一气体 -t1×Q 空气 ×V 第一气体 ) / Q’ 空气 / V’ 第一气体 -t2; Among them, T 剩余1 is the first remaining effective adsorption time for adsorbing the first gas under the current operating condition; T 总 is the total adsorption time under the design condition; t1 is the adsorption time before the change of working condition; t2 is the adsorption time after the change of working condition; Q 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 第一气体 and V' 第一气体 are the first gas content in the atmosphere under design conditions and operating conditions, respectively.

4. The method for automatically adjusting molecular sieve load according to claim 1, characterized in that: The specified operating parameter values ​​include intake air temperature and water content, and the step of judging whether the specified operating parameter values ​​in the adsorption process meet the triggering condition based on the operating parameters includes: Obtaining current intake air temperature and first liquid content; determining whether the intake air temperature is within a first temperature range and whether the first liquid content is within a first liquid content threshold range; If the intake air temperature is not within the first temperature range or the first liquid content is not within the first liquid content threshold range, it is determined that the trigger condition is met.

5. The method for automatically adjusting molecular sieve load according to claim 4, characterized in that: The first liquid includes water, the remaining effective adsorption time includes a second remaining effective adsorption time, and if the trigger condition is met, the step of calculating the remaining effective adsorption time for adsorbing the corresponding component in the current adsorption cycle based on the operating parameters includes: The second remaining effective adsorption time is calculated based on the following formula: T 剩余2 =(T 总 ×Q 空气 ×V 水 -t1×Q 空气 ×V 水 ) / Q’ 空气 / V’ 水 -t2; Among them, T 剩余2 T is the second remaining effective adsorption time of water under operating conditions; 总 is the total adsorption time under the design condition; t1 is the adsorption time before the change of working condition; t2 is the adsorption time after the change of working condition; Q 空气 and Q' 空气 are the air volumes under design conditions and operating conditions respectively; V 水 and V' 水 are the air moisture content under design conditions and operating conditions respectively.

6. The method for automatically adjusting molecular sieve load according to claim 1, characterized in that: The step of controlling the air separation device to perform molecular sieve load adjustment operation based on the difference comprises: Calculating the ratio of the difference to the initial adsorption cycle; comparing the ratio with a first preset ratio range; If it exceeds the first preset ratio range, the adsorption period is extended, and the regeneration gas volume is simultaneously reduced according to the comprehensive coefficient of the air volume and the adsorption period; If it is lower than the first preset ratio range, the adsorption cycle is reduced, and the regeneration gas volume is increased synchronously according to the comprehensive coefficient of the air volume and the adsorption cycle.

7. The method for automatically adjusting molecular sieve load according to claim 1, characterized in that: After the step of controlling the air separation device to perform molecular sieve load adjustment operation based on the difference, the method further comprises: Get weather data; Determining whether to perform automatic adjustment based on the meteorological data; If automatic adjustment is required, the air separation device is controlled to perform molecular sieve load adjustment operation.

8. An automatic molecular sieve load adjustment system, characterized in that: include: An acquisition module is used to obtain various operating parameters of the air separation unit under the current operating conditions; A judgment module, used for judging whether the specified operating parameter value in the adsorption process satisfies the triggering condition for calculating the remaining effective adsorption time based on the operating parameter; A calculation module, for calculating the remaining effective adsorption time of the corresponding component in the current adsorption cycle based on the operating parameters if the trigger condition is met; A difference calculation module, used to calculate the difference between the current adsorption cycle and the initial adsorption cycle based on the remaining effective adsorption time; A control module is used to control the air separation device to perform molecular sieve load adjustment operation based on the difference.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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