An inert regenerative packed bed temperature distribution regulation system and its thermal asymmetric control method

Abstract

This invention relates to the field of inert thermal regenerative packing bed technology, and discloses an inert thermal regenerative packing bed temperature distribution control system and its thermal asymmetry control method. The system includes an inert packing bed body, a layered and zoned flow guiding assembly, a multi-region in-situ sensing unit, zoned bypass fine-tuning branches, a working condition switching execution unit, and a thermal asymmetry intelligent control controller. The inert packing bed body is radially divided into a central heat storage zone and an annular heat storage zone, and axially divided into an upper heat storage zone, a middle main heat exchange zone, and a lower heat release zone. A main air inlet manifold and a main air outlet manifold are respectively installed at the top and bottom of the tank containing the inert packing bed body. This inert thermal regenerative packing bed temperature distribution control system and its thermal asymmetry control method, through the six independent cavities and single-zone dedicated bypass fine-tuning structure, can precisely supplement heat or remove residual heat at any local asymmetry point, thereby locally resolving the problem of radial and axial thermal imbalance in the bed body.

Description

Technical Field

[0001] This invention relates to the field of inert thermal regenerative packed bed technology, specifically to an inert thermal regenerative packed bed temperature distribution control system and its thermal asymmetry control method. Background Technology

[0002] Inert heat storage packing beds use inert solid packings such as basalt, ceramic blocks, and quartz sand as the heat storage medium. They rely on the heat exchange fluid to pass through the bed to complete heat storage and energy release. However, conventional inert packing beds are affected by factors such as the randomness of packing pile voids, the difference in fluid flow resistance along the center and side walls of the bed, natural heat dissipation from the side walls of the tank, and inconsistent heat exchange boundaries at the upper and lower ends. As a result, the bed naturally forms an asymmetrical thermal distribution in the axial and radial directions, which ultimately leads to a decrease in the effective heat storage space utilization rate of the bed and frequent fluctuations in the operating conditions of the heat exchange fluid outlet.

[0003] However, existing regulatory measures have certain shortcomings: First, uniform air intake control cannot match the differences in thermal asymmetry between different zones of the bed. Single flow rate adjustment can only passively correct the overall operating conditions and cannot specifically resolve local thermal imbalances. Secondly, conventional temperature acquisition only involves setting up measuring points at the inlet and outlet of the packed bed, lacking in-situ state acquisition of multiple zones of the bed. Furthermore, existing auxiliary temperature control structures are mostly integrated heating or overall bypass pressure relief for the entire bed, which cannot introduce fine-tuning fluid in zones, and cannot achieve local heat compensation and redundant heat conduction and discharge. At the same time, the control logic is fixed.

[0004] Therefore, we propose an inert thermal storage packing bed temperature distribution control system and its thermal asymmetry control method to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a temperature distribution control system for an inert thermal regenerative packing bed and its thermal asymmetry control method. This system differs from existing unified air intake and integrated auxiliary heating control structures, allowing for precise heat replenishment or removal of residual heat at any localized asymmetric point. It effectively resolves radial and axial thermal imbalances within the bed, thus avoiding the drawbacks of synchronous control across the entire area failing to adapt to differentiated temperature fields in different zones. This solves the problems of existing unified air intake control systems for inert thermal regenerative packing beds being unable to match the thermal asymmetry differences between bed zones, and the limitations of single flow rate regulation which only passively corrects the overall operating conditions and cannot specifically resolve localized thermal imbalances.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an inert heat storage packing bed temperature distribution control system, comprising an inert packing bed body, a layered and zoned flow guiding component, a multi-region in-situ sensing unit, a zoned bypass fine-tuning branch, an operating condition switching execution unit, and a thermal asymmetry intelligent control controller. The inert packing bed body is divided into a central heat storage zone and an annular heat storage zone in the radial direction, and into an upper heat storage zone, a middle main heat exchange zone, and a lower heat release zone in the axial direction. The top and bottom of the tank body used to place the inert packing bed body are respectively provided with a main air inlet pipe and a main air outlet pipe. The layered and zoned flow guiding assembly has flow guiding baffles at the boundaries of each zone, and each flow guiding baffle has a zoned flow guiding port, dividing the inner cavity of the inert packing bed body into six independent sub-zone cavities: upper central zone, upper ring edge zone, middle central zone, middle ring edge zone, lower central zone, and lower ring edge zone. The inert heat storage packing bed body adopts a radial and axial composite zoning method. Radially, it is uniformly divided into a central heat storage zone and a ring edge heat storage zone, which is suitable for the inherent characteristics of low flow resistance in the center of the tank and large heat dissipation from the side walls. Axially, it is divided into an upper heat storage zone, a middle main heat exchange zone, and a lower heat release zone, matching... The fluid flows from top to bottom, following the storage, exchange, and release heat process. Combined with the flow guide baffles, it is further divided into six independent sub-zones: upper central zone, upper ring edge zone, middle central zone, middle ring edge zone, lower central zone, and lower ring edge zone. This achieves the division of the smallest control unit and provides a structural basis for precise local temperature control. The flow guide baffles are integral hollow plates, arranged in axial layers and radial rings at the boundaries of each zone inside the packing bed. They only isolate the bypass fine-tuning fluid in each zone, preventing cross-contamination of bypass fluids between different sub-zones, while not hindering the normal flow of the main heat exchange fluid through the bed. The multi-region in-situ sensing unit is equipped with a partition status acquisition module in each of the six sub-partition cavities. Each acquisition module independently acquires the in-situ characteristic signals of the partition and connects them to the thermal asymmetry intelligent control controller. Each of the six sub-partitions is equipped with an independent partition status acquisition module. The acquisition points are all arranged in-situ inside the packing layer of the packing bed. It can acquire the original data such as the real temperature field, fluid disturbance, and side wall heat dissipation inside each partition in real time. This is different from the traditional single-point temperature measurement method at the inlet and outlet, and ensures the data accuracy of thermal asymmetry determination. Each sub-zone cavity is equipped with a separate sub-zone bypass fine-tuning branch. One end of each fine-tuning branch is connected to the corresponding sub-zone fine-tuning interface, and the other end is connected to the cold source bypass main pipe and the hot source bypass main pipe. Each fine-tuning branch is independently equipped with a branch regulating valve. The six fine-tuning branches correspond one-to-one with the six sub-zones and are one-to-one independent control pipelines. Each branch is equipped with a branch regulating valve, which can independently complete the on / off and opening adjustment. The cold source bypass main pipe and the hot source bypass main pipe are a common main pipe structure, which centrally gathers all the fine-tuning branches. The entire bypass system is independent of the main intake main pipe and the main exhaust main pipe. The operating condition switching execution unit is connected to the main intake manifold and the main exhaust manifold. It is equipped with a heat storage reversing valve, a heat release reversing valve, and a static heat preservation sealing valve. It is used to switch between three operating conditions: heat storage, heat release, and static heat preservation, and to feed back the operating condition signal to the controller. It switches between the three standard operating conditions of heat storage, heat release, and static heat preservation through different valve position combinations. At the same time, it uploads the valve position operating condition signal to the controller in real time as a trigger signal for control logic switching. The thermal asymmetry intelligent control controller incorporates a zone signal analysis module, a thermal asymmetry offset discrimination module, a working condition control logic library, and a branch valve group drive module. The zone signal analysis module analyzes the zone-acquired signals; the thermal asymmetry offset discrimination module determines the thermal asymmetry position and imbalance type based on the relative difference between zones; the working condition control logic library pre-stores three types of working condition-specific control strategies; and the branch valve group drive module independently drives the opening of each branch regulating valve to achieve zone-specific fine-tuning. The four functional modules—zone signal analysis module, thermal asymmetry offset discrimination module, and branch valve group drive module—complete sensor signal preprocessing, use the relative difference between zones as the judgment basis, abandoning fixed temperature thresholds, and pre-store three sets of independent control strategies. The branch valve group drive module outputs drive signals to individually control the action of each regulating valve, achieving independent zone-specific fine-tuning.

[0007] Preferably, the flow guide baffle only blocks the cross-zone flow of the bypass fine-tuning fluid, without hindering the full-area flow of the main heat exchange fluid across the zones. The flow cross-section of the flow guide port matches the fluid flux of the corresponding zone. The cross-sectional size of the flow guide port in the zone is designed according to the different fluid flux of the corresponding zone. The cross-section of the flow guide port in the central zone is larger than that in the ring zone to match the working condition where the main fluid flow rate in the central zone is larger. The physical structure of the baffle only blocks the cross-zone flow of the bypass fine-tuning fluid. The main heat exchange fluid can flow freely between the six sub-zones through the flow guide port, ensuring the overall heat exchange continuity of the packing bed.

[0008] Preferably, the signals acquired by the partition status acquisition module include three types of feature information: partition temperature field distribution characteristics, main fluid flow direction disturbance, and tank sidewall heat dissipation disturbance. The partition temperature field distribution characteristics include multi-point temperature and temperature gradient. The main fluid flow direction disturbance monitors abnormal fluid velocity and flow direction within the partition. The tank sidewall heat dissipation disturbance collects temperature field deviations caused by heat dissipation in the sidewall area. The comprehensive analysis of these three types of signals fully reflects the thermal state of the partition and improves the accuracy of thermal asymmetry identification.

[0009] Preferably, the cold source bypass header and the heat source bypass header are independent of the main intake header and the main exhaust header. The bypass fine-tuning fluid does not flow into the main heat exchange fluid main circuit. The two bypass headers for the cold source and the heat source are completely independent of the main heat exchange pipeline system and belong to an external independent fine-tuning circuit. The low-temperature and high-temperature fine-tuning fluids in the bypass only act locally within the corresponding sub-zone and do not flow into the main intake or main exhaust header throughout the entire process. This ensures that the composition, flow rate, and temperature of the main heat exchange fluid are not disturbed by the fine-tuning operation, and the main system operates stably.

[0010] A method for controlling thermal asymmetry in an inert thermal storage packed bed includes the following steps: Operating condition identification: The controller receives the valve position signal from the operating condition switching execution unit, identifies the current operating condition, and retrieves the corresponding operating condition benchmark judgment rule; Partitioned data acquisition: The in-situ sensing unit simultaneously acquires in-situ feature data of six sub-partitions and uploads it to the controller; Offset analysis: By comparing the characteristics of the center / ring edge zones in the same layer laterally and the upper and lower zones in the same radial direction in the longitudinal direction, we can distinguish three types of thermal asymmetry: thermal storage enrichment, thermal release imbalance, and static distortion, and lock in the target control zone. Operating condition control: In heat storage mode, the heat source bypass is opened to the underheated zone and the cold source bypass is opened to the overheated zone; in heat release mode, the cold source is opened to the zone that releases heat too quickly and the heat source is opened to the zone where residual heat is retained; in static mode, the bypass is opened and closed intermittently with a small degree to disturb the local flow field. Closed-loop iteration: After adjustment, the deviation of the sampled partition data is recalculated. If it is not balanced, the branch valve opening is iteratively corrected until the relative deviation of the partition converges. This control method is a closed-loop automatic control system with five steps executed sequentially in a loop. Operating condition identification is the prerequisite for switching control logic. Zoned data acquisition provides raw data for the entire domain. Offset analysis determines the location and type of thermal asymmetry. Operating condition-based control is used for precise intervention. Closed-loop iteration enables dynamic correction. The entire method runs continuously and is adapted to the full-cycle working state of the packing bed.

[0011] Preferably, the thermal asymmetry offset assessment relies entirely on the relative characteristic differences between zones, without using a fixed temperature value as a threshold. The assessment uses comparisons of relative differences between zones, specifically comparing the central zone and the circumferential zone at the same height, and comparing the upper and lower zones along the same radial direction, without setting a uniform fixed temperature threshold. This method is adaptable to packing beds with different packing specifications, different ambient temperatures, and different packing heights, offering greater versatility and avoiding the control failure problems caused by fixed thresholds.

[0012] Preferably, under static heat preservation conditions, the bypass regulating valve adopts an intermittent pulse opening and closing mode. The duration of a single opening and closing and the opening and closing interval are dynamically adjusted by the real-time deviation of the zone. Under static heat preservation conditions, there is no main fluid flow in the packing bed, which is prone to local temperature field distortion. Therefore, the regulating valve adopts an intermittent pulse opening and closing mode, relying on short-term, intermittent bypass fluid disturbance to balance the local temperature. The opening and closing duration and interval are dynamically and adaptively adjusted according to the real-time zone deviation. The larger the deviation, the higher the pulse opening and closing frequency and the larger the single opening degree.

[0013] Preferably, the control logic for each operating condition is independent of each other. The controller updates the control rules synchronously at the moment of operating condition switching, without using the control parameters of the previous operating condition. The control logic and parameter system of the three operating conditions of heat storage, heat release and static are completely independent of each other. At the moment of operating condition switching, the controller immediately clears the parameters of the previous operating condition and loads the exclusive rules of the current operating condition. There is no problem of parameter reuse or logic confusion, which ensures accurate matching of control strategies under different operating conditions.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a temperature distribution control system for an inert thermal regenerative packing bed and a method for controlling its thermal asymmetry, which has the following beneficial effects: 1. The temperature distribution control system and thermal asymmetry control method of the inert thermal storage packing bed, through the six independent cavities and the single-zone dedicated bypass fine-tuning structure, can accurately supplement heat or remove residual heat for any local asymmetric point, thereby locally eliminating the problem of radial and axial thermal imbalance of the bed.

[0015] 2. The temperature distribution control system and thermal asymmetry control method of the inert thermal storage packing bed rely on the relative deviation of the zones to determine thermal asymmetry. It can complete the control without setting a fixed temperature threshold and is suitable for packing beds with different packing specifications and different environmental heat dissipation conditions. Attached Figure Description

[0016] Figure 1 This is a system flow diagram of an inert heat storage packing bed temperature distribution control system proposed in this invention; Figure 2 This is a flowchart of a method for controlling thermal asymmetry in an inert regenerative packed bed proposed in this invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0018] Please see Figure 1 A temperature distribution control system for an inert thermal storage packing bed includes an inert packing bed body, a layered and zoned flow guiding component, a multi-region in-situ sensing unit, a zoned bypass fine-tuning branch, an operating condition switching execution unit, and a thermal asymmetry intelligent control controller. The inert packing bed body is divided into a central heat storage zone and an annular heat storage zone in the radial direction, and into an upper heat storage zone, a middle main heat exchange zone, and a lower heat release zone in the axial direction. The top and bottom of the tank body used to place the inert packing bed body are respectively equipped with a main air inlet pipe and a main air outlet pipe. The layered and zoned flow guiding component is equipped with flow guiding baffles at the boundaries of each zone. Each flow guiding baffle has a zoned flow guiding port and divides the inner cavity of the inert packing bed into six independent sub-zone cavities: upper central zone, upper ring side zone, middle central zone, middle ring side zone, lower central zone, and lower ring side zone. The flow guiding baffles only block the cross-zone flow of the bypass fine-tuning fluid, but do not hinder the full-area flow of the main heat exchange fluid across the zones. The flow cross section of the flow guiding port matches the fluid flux of the corresponding zone. The multi-region in-situ sensing unit is equipped with a partition status acquisition module in each of the six sub-partition cavities. Each acquisition module independently acquires the in-situ characteristic signals of the partition and connects them to the thermal asymmetric intelligent control controller. The signals acquired by the partition status acquisition module include three types of characteristic information: partition temperature field distribution characteristics, main fluid flow direction disturbance, and tank sidewall heat dissipation disturbance. Each sub-zone cavity is equipped with a separate sub-zone bypass fine-tuning branch. One end of each fine-tuning branch is connected to the corresponding sub-zone fine-tuning interface, and the other end is connected to the cold source bypass main pipe and the heat source bypass main pipe. Each fine-tuning branch is independently equipped with a branch regulating valve. The cold source bypass main pipe and the heat source bypass main pipe are independent of the main intake main pipe and the main exhaust main pipe. The bypass fine-tuning fluid does not flow into the main heat exchange fluid main circuit. The working condition switching execution unit is connected to the main intake manifold and the main exhaust manifold. It is equipped with a heat storage reversing valve, a heat release reversing valve, and a static heat preservation sealing valve. It is used to switch between three working conditions: heat storage, heat release, and static heat preservation, and to feed back the working condition signal to the controller. The thermal asymmetry intelligent control controller has a built-in partition signal analysis module, thermal asymmetry offset discrimination module, working condition control logic library, and branch valve group drive module. The partition signal analysis module analyzes the partition acquisition signal, the thermal asymmetry offset discrimination module determines the thermal asymmetry position and imbalance type based on the relative difference between partitions, the working condition control logic library pre-stores three types of working condition-specific control strategies, and the branch valve group drive module independently drives the opening of each branch regulating valve to achieve partition fine adjustment.

[0019] A method for controlling thermal asymmetry in an inert thermal storage packed bed includes the following steps: Operating condition identification: The controller receives the valve position signal from the operating condition switching execution unit, identifies the current operating condition, and retrieves the corresponding operating condition benchmark judgment rule; Partitioned data acquisition: The in-situ sensing unit simultaneously acquires in-situ feature data of six sub-partitions and uploads it to the controller; Offset analysis: By comparing the characteristic differences of the center / ring edge zones in the same layer laterally and the upper and lower zones in the same radial direction in the longitudinal direction, three types of thermal asymmetry are distinguished: thermal storage enrichment type, thermal release imbalance type, and static distortion type, and the target control zone is locked. The thermal asymmetry offset analysis is based on the relative characteristic differences between zones throughout the process, and does not use fixed temperature values ​​as the judgment threshold. Operating condition control: In heat storage mode, the heat source bypass is connected to the underheated zone and the cold source bypass is connected to the overheated zone; in heat release mode, the cold source is connected to the zone that releases heat too quickly and the heat source is connected to the zone that retains residual heat; in static mode, the bypass is opened and closed intermittently with a small opening to disturb the local flow field; in static heat preservation mode, the bypass regulating valve adopts an intermittent pulse opening and closing mode, and the single opening and closing duration and opening and closing interval are dynamically adjusted by the real-time deviation of the zone. The control logic of each operating condition is independent of each other. The controller refreshes the control rules synchronously at the moment of operating condition switching and does not use the control parameters of the previous operating condition. Closed-loop iteration: After adjustment, the deviation of the sampled partition data is recalculated. If it is not balanced, the branch valve opening is iteratively corrected until the relative deviation of the partition converges.

[0020] In summary, the inert thermal storage packing bed temperature distribution control system and its thermal asymmetry control method, during system operation, after the operating mode switching execution unit completes the operation mode switching, the in-situ sensing unit continuously collects the in-situ operating characteristics of six independent zones. The controller compares the operating differences between the center and the ring edge zones in the same layer laterally and the upper and lower zones in the same radial direction in the longitudinal direction, thereby identifying the specific location and imbalance form of the thermal asymmetry of the bed. Subsequently, based on the exclusive control logic corresponding to the three different operating conditions of heat storage, heat release and static placement, the bypass fine-tuning branch of the corresponding target zone is opened and closed individually, and high-temperature fluid or low-temperature fluid is added to the local cavity as needed, so as to accurately offset the temperature field deviation caused by thermal asymmetry from the local level of the zone. The flow guide baffle ensures that the main heat exchange fluid continues to flow through the entire bed along the original path. The bypass fine-tuning fluid only disturbs the heat exchange environment around the heat storage packing in a localized and small area, without interfering with the overall process parameters of the main system. After the adjustment is completed, a closed-loop feedback is formed by the feedback of the sensing signal, and the operation of the branch valves is continuously iterated and optimized.

[0021] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inert regenerative packed bed temperature distribution control system, characterized by, It includes an inert packing bed body, a layered and zoned flow guiding component, a multi-region in-situ sensing unit, a zoned bypass fine-tuning branch, an operating condition switching execution unit, and a thermal asymmetry intelligent control controller. The inert packing bed body is divided into a central heat storage zone and an annular heat storage zone in the radial direction, and into an upper heat storage zone, a middle main heat exchange zone, and a lower heat release zone in the axial direction. The top and bottom of the tank body used to place the inert packing bed body are respectively provided with a main air inlet pipe and a main air outlet pipe. The layered and partitioned flow guiding component is provided with flow guiding baffles at the boundaries of each partition, and each flow guiding baffle is provided with partitioned flow guiding ports, dividing the inner cavity of the inert packing bed body into six independent sub-partition cavities: upper central area, upper ring side area, middle central area, middle ring side area, lower central area and lower ring side area. The multi-region in-situ sensing unit is configured with a partition state acquisition module in each of the six sub-partition cavities. Each acquisition module independently acquires the in-situ characteristic signal of the partition and connects it to the thermal asymmetric intelligent control controller. Each sub-zone cavity is equipped with a separate zone bypass fine-tuning branch. One end of each fine-tuning branch is connected to the corresponding zone fine-tuning interface, and the other end is connected to the cold source bypass main pipe and the heat source bypass main pipe. Each fine-tuning branch is independently equipped with a branch regulating valve. The operating condition switching execution unit is connected to the main intake manifold and the main exhaust manifold. It is equipped with a heat storage reversing valve, a heat release reversing valve, and a static heat preservation sealing valve, which are used to switch between three operating conditions: heat storage, heat release, and static heat preservation, and to feed back the operating condition signal to the controller. The thermal asymmetry intelligent control controller has a built-in partition signal analysis module, a thermal asymmetry offset discrimination module, a working condition control logic library, and a branch valve group drive module. The partition signal parsing module parses the partition acquisition signal, the thermal asymmetry offset discrimination module determines the thermal asymmetry position and imbalance type based on the relative difference between partitions, the working condition control logic library pre-stores three types of working condition-specific control strategies, and the branch valve group drive module independently drives the opening of each branch regulating valve to achieve partition fine adjustment.

2. The inert regenerative packed bed temperature distribution control system of claim 1, wherein: The flow guide baffle only blocks the cross-zone flow of the bypass fine-tuning fluid, but does not hinder the full-area flow of the main heat exchange fluid across the zones. The flow cross section of the flow guide port matches the fluid flux of the corresponding zone.

3. The inert regenerative packed bed temperature distribution control system of claim 1, wherein: The signals acquired by the partition status acquisition module include three types of characteristic information: partition temperature field distribution characteristics, main fluid flow direction disturbance, and tank sidewall heat dissipation disturbance.

4. The inert regenerative packed bed temperature distribution control system of claim 1, wherein: The cold source bypass header and the heat source bypass header are independent of the main intake header and the main exhaust header, and the bypass fine-tuning fluid does not flow into the main heat exchange fluid main circuit.

5. A method of thermal asymmetric control of an inert regenerative packed bed, characterized in that: The temperature distribution control system based on any one of claims 1-4 includes the following steps: Operating condition identification: The controller receives the valve position signal from the operating condition switching execution unit, identifies the current operating condition, and retrieves the corresponding operating condition benchmark judgment rule; Partitioned data acquisition: The in-situ sensing unit simultaneously acquires in-situ feature data of six sub-partitions and uploads it to the controller; Offset analysis: By comparing the characteristics of the center / ring edge zones in the same layer laterally and the upper and lower zones in the same radial direction in the longitudinal direction, we can distinguish three types of thermal asymmetry: thermal storage enrichment, thermal release imbalance, and static distortion, and lock in the target control zone. Operating condition control: In heat storage mode, the heat source bypass is opened to the underheated zone and the cold source bypass is opened to the overheated zone; in heat release mode, the cold source is opened to the zone that releases heat too quickly and the heat source is opened to the zone where residual heat is retained; in static mode, the bypass is opened and closed intermittently with a small degree to disturb the local flow field. Closed-loop iteration: After adjustment, the deviation of the sampled partition data is recalculated. If it is not balanced, the branch valve opening is iteratively corrected until the relative deviation of the partition converges.

6. A method for thermal asymmetric control of an inert regenerative packed bed according to claim 5, characterized in that: The thermal asymmetric offset analysis relies entirely on the relative feature difference between partitions to complete the judgment, without using a fixed temperature value as the judgment threshold.

7. A method for thermal asymmetric control of an inert regenerative packed bed according to claim 5, characterized in that: Under static heat preservation conditions, the bypass regulating valve adopts an intermittent pulse opening and closing mode, and the duration of a single opening and closing and the opening and closing interval are dynamically adjusted by the real-time deviation of the zone.

8. The method of claim 5 wherein: The control logic for each operating condition is independent of each other. When the operating condition changes, the controller refreshes the control rules synchronously and does not use the control parameters of the previous operating condition.

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