Control method of nitrogen automatic regeneration type purifier for removing high-content oxygen

Abstract

The invention relates to the technical field of gas purification, and discloses an automatic regeneration type purifier control method for removing high-content oxygen nitrogen, which comprises the following steps: S10, purification process starting and primary purification: raw material gas is firstly heated by a heat exchanger and enters a primary purification barrel to react with a copper-based metal material, and the raw material gas enters a secondary purification barrel to react with a copper-based metal material; the gas enters a primary purification part to remove oxygen in the gas, the gas subjected to primary purification enters a secondary purification part and is cooled by a heat exchanger again, and the cooled gas enters a secondary purification barrel to be further deoxygenized and purified; and S20, accurately controlling the temperature and the flow through a temperature and flow control module. According to the control method of the automatic regeneration type purifier for removing the high-content oxygen nitrogen, through an intelligent control system, accurate control over the purification process is achieved, the purification efficiency is improved, energy consumption is reduced, and safe operation of equipment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of gas purification, in particular to a control method for a nitrogen automatic regeneration purifier for removing high-content oxygen. Background Art

[0002] At present, traditional nitrogen purification methods mainly include adsorption, chemical absorption and membrane separation. Among them, the adsorption method uses a specific adsorbent (such as molecular sieve) to adsorb oxygen in the raw gas to achieve nitrogen purification. The chemical absorption method uses certain chemicals to react with oxygen to remove it from the raw gas, and the membrane separation method uses the difference in permeation rate of different gases in the membrane material to achieve the separation of nitrogen and oxygen. These methods can achieve the purpose of purifying nitrogen to a certain extent, but each has different limitations. For example, the adsorption method requires regular replacement of the adsorbent, and the operation process is relatively complicated, and the maintenance cost of the equipment is high. The chemical absorption method may produce toxic or harmful by-products, posing a potential threat to the environment. The membrane separation method is limited by the performance and permeation rate of the membrane material, the purification efficiency is relatively low, and the removal effect of high-concentration oxygen is limited.

[0003] Although the above-mentioned traditional methods can achieve nitrogen purification to a certain extent, they generally have problems such as low purification efficiency, complex operation, and high energy consumption. Specifically, low purification efficiency means that it takes longer time or more equipment to process the same amount of raw gas, thereby increasing production costs. Complex operation may lead to an increased error rate during the operation, affecting the purity and quality of nitrogen. High energy consumption not only increases production costs, but also imposes an additional burden on the environment, and has certain defects. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The purpose of the present invention is to achieve precise control of the purification process, improve purification efficiency, reduce energy consumption, and ensure the safe operation of the equipment through an intelligent control system, and to propose a control method for a nitrogen automatic regeneration purifier for removing high-content oxygen.

[0006] (II) Technical solution

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] A method for controlling a nitrogen automatic regeneration purifier for removing high-content oxygen comprises the following steps:

[0009] S10, start-up of purification process and preliminary purification, the raw gas is first heated by the heat exchanger, and then enters the primary purification barrel to react with the copper-based metal material to remove oxygen therein, and the gas after primary purification enters the secondary purification part, and is cooled by the heat exchanger again, and then enters the secondary purification barrel for further deoxygenation purification;

[0010] S20, precise control of temperature and flow rate, through the temperature and flow rate control module, real-time monitoring of the temperature in the purification barrel, according to the real-time monitored temperature data, the intelligent temperature control system automatically adjusts the heating and temperature control devices to ensure that the temperature in the purification barrel is stable at a certain high temperature for a long time to maintain the reaction activity of copper-based metal materials and oxygen, and through the high-precision flow controller, the flow of raw gas, purified nitrogen and hydrogen, as well as the pressure in the purification barrel, ensure the stability and efficiency of the purification process;

[0011] S30, the automatic regeneration mechanism is started. When the copper-based metal material in the purification barrel is saturated, the system automatically detects and switches to the regeneration mode. During the regeneration process, the purified 9N nitrogen is first introduced to purge the purification barrel to remove residual impurities in the barrel. After the purge is completed, hydrogen is introduced to perform a reduction reaction at high temperature to generate water and discharge it. The system uses a precise flow controller and temperature control system to accurately control the flow of nitrogen and hydrogen and the regeneration temperature. After the regeneration is completed, the purification barrel is restored to the pressure and temperature of the working state through the pressure equalization operation;

[0012] S40, safety protection mechanism monitoring, the safety protection mechanism module monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purified barrel in real time. When the purified gas pressure exceeds the set value, the high-performance spring-loaded safety valve automatically starts to release the pressure. When the oxygen content, temperature or pressure exceeds the set value, the system sends an alarm signal and automatically takes protective measures such as closing the valve, cutting off the gas source, and cutting off the power.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, in the start-up of the purification process and the preliminary purification step S10, the raw gas needs to undergo a pretreatment step before entering the primary purification barrel, including dust removal, water removal and oil removal, to ensure the purity of the raw gas, reduce the impact of impurities on the purification material, and improve the purification efficiency and the quality of the purified nitrogen. At the same time, the heat exchangers in the primary purification and the secondary purification both use water-cooled structural heat exchangers.

[0015] Furthermore, in the temperature and flow precise control step S20, the intelligent temperature control system not only automatically adjusts the heating and temperature control devices according to the real-time temperature in the purification barrel, but also makes dynamic adjustments according to the flow of raw gas and the pressure changes in the purification barrel to achieve more precise temperature control. The temperature and flow control module also has fault detection and alarm functions. When the heating, temperature control or flow control device fails, it can automatically send out an alarm signal and take corresponding protective measures to ensure the safe operation of the equipment.

[0016] Furthermore, in the automatic regeneration mechanism starting step S30, the regeneration process adopts nitrogen-hydrogen mixed gas regeneration technology. At the same time, the system also has the regeneration process monitoring and feedback function, which can monitor the temperature, pressure, flow and other parameters in the regeneration process in real time, and dynamically adjust and optimize the regeneration process according to the monitoring results. In addition, after the regeneration is completed, the system also restores the purification barrel to the pressure and temperature of the working state through the pressure equalization operation, ensuring that the purification barrel can be switched for purification at any time.

[0017] Furthermore, in the safety protection mechanism monitoring step S40, the safety protection mechanism module not only monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel in real time, but also has fault warning and fault handling functions. When it is monitored that parameters such as the purified gas pressure, oxygen content, temperature or pressure exceed the set value, the system can automatically send out an alarm signal and take corresponding protection measures, such as closing the valve, cutting off the gas source, and power off, to prevent equipment damage or accidents. At the same time, the system also has fault recording and fault analysis functions, which can record information such as the time, location and cause of the fault, and provide support for subsequent fault handling and equipment maintenance.

[0018] Furthermore, the control method also includes remote monitoring and management functions. Through the remote communication module, the system can transmit and communicate data with the host computer or the remote monitoring center to achieve remote monitoring and management. The remote monitoring center can receive and display various parameters and status information in the purification process in real time, such as raw gas flow, purified nitrogen flow, hydrogen flow, purification barrel temperature, pressure, etc., and can remotely control and adjust the system. In addition, the remote monitoring center also has data storage and analysis functions, which can store and analyze historical data in the purification process.

[0019] Furthermore, the purification barrel is made of high-strength, corrosion-resistant material, and is provided with uniformly distributed holes and guide plates and other structures inside the purification barrel to increase the contact area and reaction efficiency between the gas and the copper-based metal material.

[0020] Furthermore, the control method is also provided with a fault self-diagnosis and fault recovery module. When a system fault occurs, the intelligent control system can automatically detect the fault type and location and take corresponding fault recovery measures. At the same time, the system also has a fault recording and fault analysis function, which can record information such as the time, location and cause of the fault.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0023] In the present invention, the raw gas enters the primary purification barrel to react with the copper-based metal material to remove most of the oxygen, and then enters the secondary purification barrel for deep deoxygenation, ensuring the output of high-purity nitrogen. Compared with the traditional method, this multi-stage purification design can more effectively remove high-content oxygen and improve the purification efficiency. Intelligent operation is realized through the temperature and flow precision control module, the temperature in the purification barrel is monitored in real time, and the heating and temperature control devices are automatically adjusted to ensure the stability and efficiency of the purification process. At the same time, the high-precision flow controller accurately controls the flow of raw gas, purified nitrogen and hydrogen and the pressure in the purification barrel, which simplifies the operation process, reduces the difficulty and error rate of operation, and realizes energy saving through the automatic regeneration mechanism. Energy saving and consumption reduction. When the copper-based metal material in the purification barrel is saturated, the system automatically detects and switches to regeneration mode. The flow rate of nitrogen and hydrogen as well as the regeneration temperature are precisely controlled through precise flow controllers and temperature control systems, thereby achieving an efficient and energy-saving regeneration process. This not only reduces energy consumption, but also extends the service life of purification materials and reduces production costs. Finally, in response to safety issues, the safety protection mechanism monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel in real time. When the parameters exceed the set values, the system automatically takes protective measures, such as starting pressure relief, alarming, closing valves, cutting off gas sources, and powering off, etc., to ensure the safe operation of the equipment and the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a method flow chart of a method for controlling a nitrogen automatic regeneration type purifier for removing high-content oxygen. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Combination Figure 1As shown, a control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen of the present invention comprises the following steps:

[0027] S10, start-up of purification process and preliminary purification, the raw gas is first heated by the heat exchanger, and then enters the primary purification barrel to react with the copper-based metal material to remove oxygen therein, and the gas after primary purification enters the secondary purification part, and is cooled by the heat exchanger again, and then enters the secondary purification barrel for further deoxygenation purification;

[0028] S20, precise control of temperature and flow rate, through the temperature and flow rate control module, real-time monitoring of the temperature in the purification barrel, according to the real-time monitored temperature data, the intelligent temperature control system automatically adjusts the heating and temperature control devices to ensure that the temperature in the purification barrel is stable at a certain high temperature for a long time to maintain the reaction activity of copper-based metal materials and oxygen, and through the high-precision flow controller, the flow of raw gas, purified nitrogen and hydrogen, as well as the pressure in the purification barrel, ensure the stability and efficiency of the purification process;

[0029] S30, the automatic regeneration mechanism is started. When the copper-based metal material in the purification barrel is saturated, the system automatically detects and switches to the regeneration mode. During the regeneration process, the purified 9N nitrogen is first introduced to purge the purification barrel to remove residual impurities in the barrel. After the purge is completed, hydrogen is introduced to perform a reduction reaction at high temperature to generate water and discharge it. The system uses a precise flow controller and temperature control system to accurately control the flow of nitrogen and hydrogen and the regeneration temperature. After the regeneration is completed, the purification barrel is restored to the pressure and temperature of the working state through the pressure equalization operation;

[0030] S40, safety protection mechanism monitoring, the safety protection mechanism module monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purified barrel in real time. When the purified gas pressure exceeds the set value, the high-performance spring-loaded safety valve automatically starts to release the pressure. When the oxygen content, temperature or pressure exceeds the set value, the system sends an alarm signal and automatically takes protective measures such as closing the valve, cutting off the gas source, and cutting off the power.

[0031] In a preferred embodiment, the present invention can be further configured as follows: in the start-up of the purification process and the preliminary purification step S10, the raw gas needs to undergo a pretreatment step before entering the primary purification barrel, including dust removal, water removal and oil removal, to ensure the purity of the raw gas, reduce the impact of impurities on the purification material, and improve the purification efficiency and the quality of the purified nitrogen. At the same time, the heat exchangers in the primary purification and the secondary purification adopt a water-cooled structure heat exchanger. By introducing the pretreatment step of the raw gas, including dust removal, water removal and oil removal, the purity of the raw gas is effectively improved. The addition of this step significantly reduces the impact of impurities on the purification material (such as copper-based metal materials), and avoids the reduction of purification efficiency and the shortening of the service life of the purification material due to impurities. At the same time, the raw gas after pretreatment is purer, which is conducive to the smooth progress of the subsequent primary purification and secondary purification processes, thereby improving the overall purification efficiency and the quality of the purified nitrogen. The pretreatment, primary purification and secondary purification steps are closely connected to form a The complete purification chain reduces the difficulty and complexity of operation. In addition, the use of water-cooled heat exchangers not only improves the heat exchange efficiency, but also simplifies the maintenance and management of the heat exchanger, because the water-cooled structure is more stable and reliable than other types of heat exchangers (such as air-cooled) and has lower maintenance costs. Furthermore, in response to the problem of limited removal effect of high-concentration oxygen, the removal capacity of high-concentration oxygen is significantly improved through the carefully designed purification process and efficient purification materials, as well as the addition of pretreatment steps. The deoxygenation reaction in the primary purification and secondary purification processes is more sufficient and efficient, ensuring the high purity of the purified nitrogen. At the same time, the use of water-cooled heat exchangers also helps to maintain temperature stability during the purification process, further improving the purification efficiency and purity. The addition of pretreatment steps effectively reduces harmful substances and impurities in the raw gas, reducing the risk of pollution to the environment and equipment. At the same time, the use of water-cooled heat exchangers also reduces energy consumption and emissions, which is in line with the concept of green and sustainable development.

[0032] In a preferred embodiment, the present invention can be further configured as follows: in the temperature and flow precise control step S20, the intelligent temperature control system not only automatically adjusts the heating and temperature control devices according to the real-time temperature in the purification barrel, but also makes dynamic adjustments according to the flow rate of the raw gas and the pressure changes in the purification barrel to achieve more precise temperature control. The temperature and flow control module also has fault detection and alarm functions. When a heating, temperature control or flow control device fails, it can automatically send out an alarm signal and take corresponding protective measures to ensure the safe operation of the equipment. Through the dynamic adjustment function of the intelligent temperature control system, not only is it automatically adjusted according to the real-time temperature in the purification barrel, but it is also combined with the flow rate of the raw gas and the pressure changes in the purification barrel to perform precise temperature control. This dynamic adjustment mechanism ensures the stability and accuracy of the temperature during the purification process, thereby improving the reaction activity of the copper-based metal material and oxygen, and then improving the purification efficiency. Compared with the static temperature control in the traditional method, It can better adapt to the purification needs under different working conditions and ensure the efficient progress of the purification process. The fault detection and alarm function integrated in the temperature and flow control module greatly simplifies the maintenance and management of the equipment. When the heating, temperature control or flow control device fails, the system can automatically send out an alarm signal and take corresponding protective measures, such as shutting down the faulty equipment, switching to backup equipment, etc., to ensure the safe operation of the equipment. This function not only reduces the complexity of operation, but also improves the reliability and stability of the equipment, reduces production interruptions and losses caused by equipment failure, and provides additional safety protection through a comprehensive fault detection and alarm mechanism. When the system detects any abnormal situation that may affect the safe operation of the equipment, it will immediately send out an alarm signal and take corresponding protective measures. This real-time safety monitoring and response mechanism helps to promptly discover and deal with potential safety hazards and prevent accidents, thereby ensuring the safety of equipment and personnel.

[0033] In a preferred embodiment, the present invention can be further configured as follows: in the automatic regeneration mechanism start-up step S30, the regeneration process adopts the nitrogen-hydrogen mixed gas regeneration technology. At the same time, the system also has the regeneration process monitoring and feedback function, which can monitor the temperature, pressure, flow and other parameters in the regeneration process in real time, and dynamically adjust and optimize the regeneration process according to the monitoring results. In addition, after the regeneration is completed, the system also restores the purification barrel to the pressure and temperature of the working state through the pressure equalization operation, ensuring that the purification barrel can be switched for purification at any time. By accurately controlling the mixing ratio and flow rate of nitrogen and hydrogen, more efficient and stable reaction conditions are provided for the regeneration process. The nitrogen-hydrogen mixed gas regeneration technology can more effectively reduce the saturated purification material (such as copper-based metal material), thereby improving the regeneration efficiency. At the same time, due to the high reaction activity of the nitrogen-hydrogen mixed gas, the regeneration process can be completed in a shorter time, reducing the production interruption time and improving the utilization rate of the equipment. The regeneration process monitoring and feedback function is introduced, which can monitor the regeneration process in real time. The system can monitor key parameters such as temperature, pressure and flow, and dynamically adjust and optimize the regeneration process according to the monitoring results. Through real-time monitoring and feedback, the system can promptly detect and correct deviations in the regeneration process to ensure the stability and reliability of the regeneration process. This precise control method not only improves the regeneration efficiency, but also reduces the risk of equipment damage and waste of purification materials caused by improper regeneration. After the regeneration is completed, the purification barrel is restored to the pressure and temperature of the working state through pressure equalization operation. This step ensures that the purification barrel can quickly return to normal working state after regeneration, thereby achieving the continuity and stability of the purification process. At the same time, the pressure equalization operation also helps to reduce the pressure and temperature fluctuations generated by the purification barrel when switching purification, further improving the purification efficiency and purity. Through real-time monitoring and feedback functions, the system can promptly detect and deal with potential safety hazards to ensure the safety of the regeneration process. At the same time, the pressure equalization operation also reduces the risk of equipment damage and accidents caused by pressure and temperature fluctuations, and improves the reliability and stability of the equipment.

[0034] In a preferred embodiment of the present invention, the present invention can be further configured as follows: in the safety protection mechanism monitoring step S40, the safety protection mechanism module not only monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel in real time, but also has fault warning and fault handling functions. When it is monitored that the purified gas pressure, oxygen content, temperature or pressure and other parameters exceed the set value, the system can automatically send out an alarm signal and take corresponding protection measures, such as closing the valve, cutting off the gas source, and power off, so as to prevent equipment damage or accidents. At the same time, the system also has fault recording and fault analysis functions, which can record information such as the time, location and cause of the fault, and provide support for subsequent fault handling and equipment maintenance. Through the safety protection mechanism module, real-time monitoring of multiple key parameters such as the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel is realized. This comprehensive monitoring method not only improves the system's sensitivity to potential safety risks, but also can promptly detect and handle abnormal situations, thereby It effectively avoids equipment damage or accidents caused by monitoring blind spots, and introduces fault warning and fault handling functions. When it monitors that parameters such as purified gas pressure, oxygen content, temperature or pressure exceed the set value, the system can automatically send out an alarm signal and immediately take corresponding protective measures, such as closing valves, cutting off gas sources, and power off. This rapid response mechanism not only reduces the interference of faults on the production process, but also minimizes the losses and risks caused by faults. Through the fault recording and fault analysis functions, detailed records and analysis of information such as the time, location and cause of the fault are achieved. These records and analysis results not only provide valuable data support for subsequent fault handling and equipment maintenance, but also help enterprises to deeply understand the equipment operating status and fault occurrence patterns, so as to formulate more scientific and reasonable equipment maintenance and management strategies. Through real-time monitoring, rapid response, fault recording and analysis functions, the system can promptly discover and deal with potential safety hazards to ensure the safe operation of equipment.

[0035] In a preferred embodiment of the present invention, the control method also includes remote monitoring and management functions. Through the remote communication module, the system can transmit and communicate data with the host computer or the remote monitoring center to realize remote monitoring and management. The remote monitoring center can receive and display various parameters and status information in the purification process in real time, such as raw gas flow, purified nitrogen flow, hydrogen flow, purification barrel temperature, pressure, etc., and can remotely control and adjust the system. In addition, the remote monitoring center also has data storage and analysis functions, and can store and analyze historical data in the purification process. By introducing the remote communication module, data transmission and communication between the system and the host computer or the remote monitoring center are realized. This function allows users to monitor and manage the nitrogen purification system in real time through the remote monitoring center anytime and anywhere, and can grasp various parameters and status information in the purification process, such as raw gas flow, purified nitrogen flow, hydrogen flow, purification barrel temperature, pressure, etc., without having to go to the site in person. This remote monitoring capability not only improves the flexibility and convenience of the system, but also provides users with more The remote monitoring center adds comprehensive and accurate purification process information, which helps users to discover and deal with potential problems in a timely manner. Data storage and analysis functions are added to the remote monitoring center. By storing historical data in the purification process, users can trace back and analyze the data to understand the stability and change trends of the purification process, thereby optimizing purification parameters and improving purification efficiency. At the same time, the data analysis function can also help users discover potential failure modes and risk points, and provide strong support for preventive maintenance and troubleshooting of equipment. This data processing and analysis capability not only improves the intelligence level of the system, but also provides users with a more scientific and objective basis for decision-making. The introduction of remote monitoring and management functions also brings additional safety and reliability advantages. Through real-time monitoring and remote control functions, users can discover and respond to potential safety risks in the first place, such as abnormal conditions such as overpressure and overtemperature, thereby avoiding accidents. At the same time, the data storage and analysis function of the remote monitoring center also provides important data support for troubleshooting and accident investigation, which helps users quickly locate the cause of the problem and take corresponding repair measures.

[0036] In a preferred embodiment of the present invention, the purification barrel can be further configured as follows: the purification barrel is made of high-strength, corrosion-resistant material, and the purification barrel is provided with uniform distribution holes and guide plates and other structures inside to increase the contact area and reaction efficiency between the gas and the copper-based metal material. The purification barrel is made of high-strength, corrosion-resistant material. The selection of this material not only improves the mechanical strength and durability of the purification barrel, enabling it to withstand higher working pressures and harsher working environments, but also enhances the purification barrel's resistance to corrosive gases and extends the service life of the equipment. This material improvement effectively solves the performance degradation and safety hazards of traditional purification barrels caused by material problems. Uniform distribution holes and guide plates and other structures are provided inside the purification barrel. The addition of these structures enables the raw gas to be more evenly distributed inside the purification barrel, increasing the contact area between the gas and the copper-based The contact area of ​​the metal material is increased, thereby improving the reaction efficiency. At the same time, the design of the guide plate can also guide the gas to form a reasonable flow path inside the purification barrel, avoiding the occurrence of gas short circuit and dead zone, and further improving the purification effect. Due to the increase in the contact area between the gas and the copper-based metal material, the reaction efficiency is improved, making the purification process more sufficient and efficient, which not only reduces the purification time and improves production efficiency, but also makes the purified nitrogen purer, meeting higher standards of industrial needs. Due to the extended service life of the purification barrel, the replacement frequency and maintenance cost of the equipment are reduced. At the same time, due to the improvement of purification efficiency, the consumption of raw gas and energy waste are reduced, and the production cost is reduced. In addition, due to the higher purity of the purified nitrogen, the emission of waste gas and pollution to the environment are reduced, which is in line with the green and sustainable development concept.

[0037] In a preferred embodiment, the present invention can be further configured as follows: the control method is also provided with a fault self-diagnosis and fault recovery module. When a system fault occurs, the intelligent control system can automatically detect the fault type and location and take corresponding fault recovery measures. For example, when a purification barrel fails, the system can automatically switch to a spare purification barrel for purification operation; when a sensor fails, the system can automatically close the relevant valve and send out an alarm signal to ensure the safe operation of the equipment. At the same time, the system also has fault recording and fault analysis functions, and can record information such as the time, location and cause of the fault. The control method also has energy-saving and environmental protection functions. During the purification process, the system achieves full utilization of energy and minimization of emissions by accurately controlling the flow of raw gas, purified nitrogen and hydrogen, and parameters such as temperature and pressure in the purification barrel. At the same time, the system also uses advanced insulation materials and energy-saving technologies to reduce the energy consumption and operating costs of the equipment. In addition, the system also has functions such as automatic shutdown and energy-saving mode, which can automatically shut down related equipment and reduce energy consumption when purification operation is not required, further reducing the operating cost and environmental impact of the equipment. At the same time, the system also has energy efficiency monitoring and evaluation functions. It can monitor and evaluate the energy efficiency level of the equipment in real time, and provide strong support for subsequent energy efficiency optimization and equipment improvement. The control method is also user-friendly and scalable. Through the touch screen human-machine interface, the operator can easily view and set various parameters and status information in the purification process, and realize real-time monitoring and adjustment of the purification process. At the same time, the system also has multiple language selection and personalized setting functions to meet the needs of different users. In addition, the system is also scalable and can be easily connected to other equipment and systems to achieve more complex and diversified functions. For example, it can be connected to gas analyzers, gas chromatographs and other equipment to perform more accurate analysis and detection of purified nitrogen; it can also be connected to automatic control systems and remote monitoring systems to achieve automatic control and remote monitoring of the purification process. These functions make the control method have a wider application prospect and higher market competitiveness. The fault self-diagnosis and fault recovery modules are introduced, which can automatically detect the fault type and location when a fault occurs, and quickly take corresponding fault recovery measures. For example, when a purification barrel fails, the system can intelligently switch to the spare purification barrel for purification operation to ensure the continuity and stability of the purification process.When a sensor fails, the system can automatically close the relevant valves and send out an alarm signal, effectively preventing equipment damage or safety accidents caused by the failure. At the same time, the system also has fault recording and fault analysis functions, which can record the time, location and cause of the failure in detail, providing valuable data support for subsequent equipment maintenance and management. This series of fault handling mechanisms has significantly improved the reliability and safety of the system and reduced the cost of equipment maintenance. By accurately controlling the flow of raw gas, purified nitrogen and hydrogen, as well as the temperature and pressure in the purification barrel, the full utilization of energy and the minimization of emissions are achieved. At the same time, the system also uses advanced insulation materials and energy-saving technologies to further reduce the energy consumption and operating costs of the equipment. In addition, the system also has functions such as automatic shutdown and energy-saving mode, which can automatically shut down related equipment and reduce energy consumption when purification operations are not required, further reducing unnecessary energy waste. The introduction of energy efficiency monitoring and evaluation functions enables the system to monitor and evaluate the energy efficiency level of the equipment in real time, providing strong data support for subsequent energy efficiency optimization and equipment improvement. The implementation of these energy-saving and environmental protection measures, It not only conforms to the current green and sustainable development concept, but also reduces the operating costs and improves the economic benefits for enterprises. Through the design of touch screen human-machine interface and multiple language selection, operators can easily view and set various parameters and status information in the purification process, realize real-time monitoring and adjustment of the purification process, and the addition of personalized setting function meets the needs of different users and improves the user experience. This series of user-friendly designs makes the system easier to operate and maintain, reduces the training cost and time cost of operators, and the system can be easily connected to other equipment and systems to achieve more complex and diversified functions. For example, it can be connected to gas analyzers, gas chromatographs and other equipment to perform more accurate analysis and detection of purified nitrogen; it can also be connected to automatic control systems and remote monitoring systems to realize automatic control and remote monitoring of the purification process. This scalable design not only improves the flexibility and adaptability of the system, but also provides more choices and possibilities for future equipment upgrades and expansions of enterprises. The realization of these functions makes the control method have a wider application prospect and higher market competitiveness. ;

[0038] During the start-up and preliminary purification stages of the purification process, the raw gas is first heated by a heat exchanger. The purpose of this step is to improve the purification efficiency. The heated raw gas then enters the primary purification barrel, where it reacts with the copper-based metal material in the barrel to remove the oxygen. The gas after primary purification continues to enter the secondary purification part, where it is cooled by a heat exchanger again, and then enters the secondary purification barrel for further deoxygenation purification. In this way, through the two-stage purification process, it can be ensured that the oxygen in the raw gas is effectively removed to achieve high-purity nitrogen;

[0039] Next, in the stage of precise temperature and flow control, the temperature in the purification barrel is monitored in real time through the temperature and flow control module. According to the real-time monitored temperature data, the intelligent temperature control system automatically adjusts the heating and temperature control devices to ensure that the temperature in the purification barrel is stable and operates at a certain high temperature for a long time. The purpose of this step is to maintain the reactivity of copper-based metal materials with oxygen, thereby improving the purification efficiency. At the same time, the flow of raw gas, purified nitrogen and hydrogen, as well as the pressure in the purification barrel are accurately controlled by a high-precision flow controller. This ensures the stability and efficiency of the purification process and avoids poor purification results due to unstable flow or pressure;

[0040] When the copper-based metal material in the purification barrel is saturated, the automatic regeneration mechanism starts. During the regeneration process, firstly, the purified 9N nitrogen is introduced to purge the purification barrel to remove the residual impurities in the barrel. After the purge is completed, hydrogen is introduced to carry out a reduction reaction at high temperature to generate water and discharge it. The system uses precise flow controllers and temperature control systems to accurately control the flow of nitrogen and hydrogen and the regeneration temperature to ensure the smooth progress of the regeneration process. After the regeneration is completed, the purification barrel is restored to the pressure and temperature of the working state through the pressure equalization operation to prepare for the next purification process;

[0041] Finally, the safety protection mechanism monitoring plays a vital role in the entire purification process. The safety protection mechanism module monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel in real time. When the purified gas pressure exceeds the set value, the high-performance spring-loaded safety valve automatically starts to release pressure to prevent equipment damage or safety accidents. When the oxygen content, temperature or pressure exceeds the set value, the system sends an alarm signal and automatically takes protective measures such as closing the valve, cutting off the gas source, and cutting off the power to ensure the safety of the equipment and operators.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device 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, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling a nitrogen automatic regeneration type purifier for removing high-content oxygen, characterized in that: The following steps are involved: S10, start-up of purification process and preliminary purification, the raw gas is first heated by the heat exchanger, and then enters the primary purification barrel to react with the copper-based metal material to remove oxygen therein, and the gas after primary purification enters the secondary purification part, and is cooled by the heat exchanger again, and then enters the secondary purification barrel for further deoxygenation purification; S20, precise control of temperature and flow rate, through the temperature and flow rate control module, real-time monitoring of the temperature in the purification barrel, according to the real-time monitored temperature data, the intelligent temperature control system automatically adjusts the heating and temperature control devices to ensure that the temperature in the purification barrel is stable at a certain high temperature for a long time to maintain the reaction activity of copper-based metal materials and oxygen, and through the high-precision flow controller, the flow of raw gas, purified nitrogen and hydrogen, as well as the pressure in the purification barrel, ensure the stability and efficiency of the purification process; S30, the automatic regeneration mechanism is started. When the copper-based metal material in the purification barrel is saturated, the system automatically detects and switches to the regeneration mode. During the regeneration process, the purified 9N nitrogen is first introduced to purge the purification barrel to remove residual impurities in the barrel. After the purge is completed, hydrogen is introduced to perform a reduction reaction at high temperature to generate water and discharge it. The system uses a precise flow controller and temperature control system to accurately control the flow of nitrogen and hydrogen and the regeneration temperature. After the regeneration is completed, the purification barrel is restored to the pressure and temperature of the working state through the pressure equalization operation; S40, safety protection mechanism monitoring, the safety protection mechanism module monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purified barrel in real time. When the purified gas pressure exceeds the set value, the high-performance spring-loaded safety valve automatically starts to release the pressure. When the oxygen content, temperature or pressure exceeds the set value, the system sends an alarm signal and automatically takes protective measures such as closing the valve, cutting off the gas source, and cutting off the power.

2. A method for controlling a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: In the start-up and preliminary purification step S10 of the purification process, the raw gas needs to undergo a pretreatment step before entering the primary purification barrel, including dust removal, water removal and oil removal, so as to ensure the purity of the raw gas, reduce the impact of impurities on the purification material, and improve the purification efficiency and the quality of the purified nitrogen. At the same time, the heat exchangers in the primary purification and the secondary purification both adopt water-cooled structured heat exchangers.

3. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: In the temperature and flow precise control step S20, the intelligent temperature control system not only automatically adjusts the heating and temperature control devices according to the real-time temperature in the purification barrel, but also makes dynamic adjustments according to the flow of raw gas and the pressure changes in the purification barrel to achieve more precise temperature control. The temperature and flow control module also has fault detection and alarm functions. When the heating, temperature control or flow control device fails, it can automatically send out an alarm signal and take corresponding protective measures to ensure the safe operation of the equipment.

4. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: In the automatic regeneration mechanism starting step S30, the regeneration process adopts nitrogen-hydrogen mixed gas regeneration technology. At the same time, the system also has the regeneration process monitoring and feedback function, which can monitor the temperature, pressure, flow and other parameters in the regeneration process in real time, and dynamically adjust and optimize the regeneration process according to the monitoring results. In addition, after the regeneration is completed, the system also restores the purification barrel to the pressure and temperature of the working state through the pressure equalization operation to ensure that the purification barrel can be switched for purification at any time.

5. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: In the safety protection mechanism monitoring step S40, the safety protection mechanism module not only monitors the purified gas pressure, the oxygen content in the raw gas, and the temperature and pressure in the purification barrel in real time, but also has fault warning and fault handling functions. When it is monitored that parameters such as the purified gas pressure, oxygen content, temperature or pressure exceed the set value, the system can automatically send out an alarm signal and take corresponding protection measures, such as closing the valve, cutting off the gas source, and power off, so as to prevent equipment damage or accidents. At the same time, the system also has fault recording and fault analysis functions, which can record information such as the time, location and cause of the fault, and provide support for subsequent fault handling and equipment maintenance.

6. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: The control method also includes remote monitoring and management functions. Through the remote communication module, the system can transmit and communicate data with the host computer or the remote monitoring center to achieve remote monitoring and management. The remote monitoring center can receive and display various parameters and status information in the purification process in real time, such as raw gas flow, purified nitrogen flow, hydrogen flow, purification barrel temperature, pressure, etc., and can remotely control and adjust the system. In addition, the remote monitoring center also has data storage and analysis functions, and can store and analyze historical data in the purification process.

7. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: The purification barrel is made of high-strength, corrosion-resistant material, and is provided with uniformly distributed holes and guide plates and other structures inside the purification barrel to increase the contact area and reaction efficiency between the gas and the copper-based metal material.

8. The control method of a nitrogen automatic regeneration type purifier for removing high-content oxygen according to claim 1, characterized in that: The control method is also provided with a fault self-diagnosis and fault recovery module. When a fault occurs in the system, the intelligent control system can automatically detect the fault type and location and take corresponding fault recovery measures. At the same time, the system also has a fault recording and fault analysis function, which can record the time, location and cause of the fault. Oxygen analyzer.

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