Gas circulation reaction control method based on pressure change rate feedforward and related device

Abstract

The application discloses a gas circulation reaction control method based on pressure change rate feedforward and related devices, and relates to the technical field of automatic control of chemical processes, and comprises the following steps: acquiring pressure data in real time and calculating a pressure change rate, when the absolute value of the pressure change rate meets a preset trigger condition, determining a target opening degree adjustment amount of a pressure regulating mechanism according to a numerical interval where the pressure change rate is located, and generating a feedforward control instruction, the lead perception of the pressure change trend replaces the dependence of traditional PID feedback control on deviation accumulation, significantly improves the inherent response lag characteristic of the traditional control mode, and effectively reduces the triggering of the equipment surge protection. Meanwhile, when the negative downward pressure change rate meets a preset sudden drop condition, a decoupling compensation instruction is generated to control the gas discharge mechanism to increase the gas discharge amount, thereby realizing the cooperative linkage of pressure regulation and gas discharge, and optimizing the pressure stability of the system under severe fluctuation conditions.

Description

Technical Field

[0001] This application relates to the field of automatic control technology for chemical processes, and in particular to a gas circulation reaction control method and related apparatus based on pressure change rate feedforward. Background Technology

[0002] The gas recirculation reaction system is powered by renewable energy sources (such as wind and solar power) and includes a feedstock gas preparation unit and a gas recirculation reaction loop (e.g., a green ammonia synthesis loop or a methanol synthesis loop). The gas recirculation reaction loop mainly consists of a pressure regulating mechanism, a reaction tower, a cooling and separation unit, and a gas emission mechanism, all connected in a closed-loop process pipeline. Renewable energy sources can provide electricity to the feedstock gas preparation unit, enabling it to generate the gas required for the gas recirculation reaction loop, such as hydrogen.

[0003] The volatility of renewable energy sources causes the supply load of the feedstock gas preparation unit to fluctuate wildly across wide ranges, from seconds to minutes. This directly leads to significant disturbances in the feedstock gas flow rate in the gas circulation reaction loop, resulting in a sharp increase in the pressure change rate of the gas circulation reaction loop. Existing technologies typically employ a proportional-integral-derivative (PID) feedback control strategy, which adjusts the opening of corresponding valves in the pressure regulating mechanism to maintain pressure stability by detecting pressure deviations. However, traditional PID control relies on deviation accumulation and has an inherent response lag characteristic. When faced with rapid pressure shocks, it often fails to adjust in time, leading to significant pressure overshoot or even triggering equipment surge protection.

[0004] Therefore, there is an urgent need for a gas circulation reaction control method that can respond quickly and actively compensate. Summary of the Invention

[0005] In view of the above problems, this application provides a gas circulation reaction control method and related device based on pressure change rate feedforward, so as to achieve rapid and stable control of the pressure in the gas circulation reaction loop under wide load and rapid fluctuation conditions. The specific solution is as follows:

[0006] The first aspect of this application provides a gas cycle reaction control method based on pressure change rate feedforward, comprising:

[0007] Real-time pressure data of the gas circulation reaction loop is acquired, and the pressure change rate is calculated based on the real-time pressure data; the gas circulation reaction loop is composed of at least a pressure regulating mechanism, a reaction tower, a cooling separation unit, and a gas emission mechanism connected in a closed loop through process pipelines;

[0008] In response to the absolute value of the pressure change rate satisfying a preset trigger condition, the target opening adjustment amount of the pressure regulating mechanism is determined according to the numerical range in which the pressure change rate is located.

[0009] A feedforward control command is generated based on the target opening adjustment amount of the pressure regulating mechanism;

[0010] In response to the negative decrease in the pressure change rate satisfying a preset sudden drop condition, a decoupling compensation command is generated. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission.

[0011] The feedforward control command is output to the pressure regulating mechanism, and the decoupling compensation command is output to the gas emission mechanism.

[0012] In one possible implementation, determining the target opening adjustment amount of the pressure regulating mechanism based on the numerical range of the pressure change rate includes:

[0013] The absolute value of the pressure change rate is compared with a plurality of incremental first thresholds to determine the target numerical range in which the pressure change rate falls;

[0014] From the preset mapping relationship between numerical ranges and opening adjustment amounts, the target opening adjustment amount corresponding to the target numerical range is found, wherein the opening adjustment amount of the pressure regulating mechanism increases as the numerical range increases.

[0015] In one possible implementation, the generation of feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism includes:

[0016] Based on formula U ff =A×K ff ×sign(dP / dt) calculates the feedforward control quantity, U ff Let A be the feedforward control variable, and K be the target opening adjustment variable. ff The preset feedforward proportional coefficient is used, and sign(dP / dt) is the sign function of the pressure change rate;

[0017] Generate the feedforward control command that includes the feedforward control quantity.

[0018] In one possible implementation, the generation of decoupling compensation instructions includes:

[0019] Based on the absolute value of the pressure change rate, a decoupling compensation amount is determined, wherein the decoupling compensation amount is positively correlated with the absolute value of the pressure change rate.

[0020] Generate the decoupling compensation instruction containing the decoupling compensation amount.

[0021] In one possible implementation, determining the decoupling compensation amount based on the absolute value of the pressure change rate includes:

[0022] Based on formula U decouple =C×|dP / dt|×K decouple The decoupling compensation amount is calculated, where U decouple The decoupling compensation amount is given by C, which is a preset constant, |dP / dt| is the absolute value of the pressure change rate, and K is the value of K. decouple This is the preset decoupling ratio coefficient.

[0023] One possible implementation also includes:

[0024] Obtain the pressure setpoint of the gas circulation reaction loop, and calculate the pressure deviation between the pressure setpoint and the real-time pressure data;

[0025] Based on the pressure deviation, a feedback control command is generated by the feedback controller;

[0026] The feedforward control command and the feedback control command are fused together to obtain a composite control command.

[0027] In one possible implementation, outputting the feedforward control command to the pressure regulating mechanism includes:

[0028] The composite control command is output to the pressure regulating mechanism.

[0029] A second aspect of this application provides a gas circulation reaction control device based on pressure change rate feedforward, comprising:

[0030] The first acquisition module is used to acquire real-time pressure data of the gas circulation reaction loop and calculate the pressure change rate based on the real-time pressure data; the gas circulation reaction loop is composed of at least a pressure regulating mechanism, a reaction tower, a cooling separation unit and a gas emission mechanism connected in a closed manner through process pipelines;

[0031] The first determining module is used to determine the target opening adjustment amount of the pressure regulating mechanism according to the numerical range of the pressure change rate in response to the absolute value of the pressure change rate satisfying a preset trigger condition.

[0032] The first generation module is used to generate feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism;

[0033] The second generation module is used to generate a decoupling compensation command in response to the negative decrease in the pressure change rate satisfying a preset sudden drop condition. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission.

[0034] The output module is used to output the feedforward control command to the pressure regulating mechanism and the decoupling compensation command to the gas emission mechanism.

[0035] A third aspect of this application provides a computer program product including computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the gas circulation reaction control method based on pressure change rate feedforward described in the first aspect or any implementation thereof.

[0036] A fourth aspect of this application provides an electronic device, including at least one processor and a memory connected to the processor, wherein:

[0037] The memory is used to store computer programs;

[0038] The processor is used to execute the computer program so that the electronic device can implement the gas circulation reaction control method based on pressure change rate feedforward, which is described in the first aspect or any implementation thereof.

[0039] The fifth aspect of this application provides a computer storage medium carrying one or more computer programs that, when executed by an electronic device, enable the electronic device to implement the gas circulation reaction control method based on pressure change rate feedforward, as described in the first aspect or any implementation thereof.

[0040] By employing the aforementioned technical solution, the gas circulation reaction control method based on pressure change rate feedforward provided in this application addresses the problem of drastic fluctuations in raw gas supply load (ranging from seconds to minutes) and a sharp increase in the pressure change rate of the gas circulation reaction loop caused by renewable energy fluctuations. It acquires pressure data in real time and calculates the pressure change rate. When the absolute value of the pressure change rate meets a preset trigger condition, it determines the target opening adjustment amount of the pressure regulating mechanism based on its numerical range and generates a feedforward control command. This method utilizes the advanced perception of pressure change trends to replace the reliance on deviation accumulation in traditional PID feedback control, overcoming the inherent response lag of traditional control methods. It proactively adjusts the pressure regulating mechanism before pressure deviations occur, significantly reducing pressure overshoot and shortening adjustment time, effectively reducing the triggering of equipment surge protection. Simultaneously, when the pressure change rate decreases negatively and meets a preset sudden drop condition, a decoupling compensation command is generated to control the gas emission mechanism to increase gas emission, achieving coordinated linkage between pressure regulation and gas emission, further improving the system's pressure stability under drastic fluctuation conditions. Attached Figure Description

[0041] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0042] Figure 1A system architecture diagram of a gas circulation reaction system provided in this application;

[0043] Figure 2 A schematic flowchart of a gas circulation reaction control method based on pressure change rate feedforward provided in an embodiment of this application;

[0044] Figure 3 A schematic diagram of a gas circulation reaction control device based on pressure change rate feedforward provided for an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0046] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0047] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0048] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0050] This application can be applied to the pressure control of gas cycle reaction systems driven by renewable energy. The following section will introduce several application scenarios that have been implemented in products, taking typical scenarios such as green ammonia synthesis, green methanol synthesis, and Fischer-Tropsch oil synthesis as examples.

[0051] With the accelerating pace of global carbon neutrality, green chemical engineering routes driven by renewable energy sources such as wind power and photovoltaics are becoming a core direction for industry development. In this approach, renewable energy first produces green hydrogen through feedstock gas preparation units such as water electrolysis hydrogen production units. This green hydrogen is then catalytically synthesized with feedstock gases such as nitrogen, carbon monoxide, or carbon dioxide in a gas recirculation reaction loop, ultimately producing high-value-added products such as green ammonia, green methanol, or synthetic fuels. However, the output of wind and photovoltaic power is intermittent and fluctuates dramatically from seconds to minutes. This causes significant fluctuations in the hydrogen production load of water electrolysis hydrogen production units, directly leading to rapid and substantial disturbances in the inlet flow rate and loop pressure of the gas recirculation reaction loop. Gas recirculation reaction loops typically have large volume, high inertia, and large hysteresis characteristics. Traditional PID feedback control strategies often fail to adjust in time when faced with such rapid pressure shocks, easily leading to significant pressure overshoot or even triggering equipment surge protection, severely impacting the safe and stable operation of the system and product yield.

[0052] Application Scenario 1: The gas recirculation reaction loop is a green ammonia synthesis loop. In the green ammonia synthesis scenario, the gas recirculation reaction loop mainly consists of a recirculating gas compressor, an ammonia synthesis tower, a cooling separation unit, and a purge gas discharge pipeline, all connected in a closed-loop process pipeline. Green hydrogen produced by renewable energy-driven feedstock gas preparation units, such as water electrolysis hydrogen production units, is mixed with nitrogen supplied by an air separation unit in a stoichiometric ratio and then enters the green ammonia synthesis loop. Under high temperature, high pressure, and the action of iron-based or ruthenium-based catalysts, an ammonia synthesis reaction occurs. Because the ammonia synthesis reaction is a reversible exothermic reaction and is constrained by chemical equilibrium, the operating pressure of the green ammonia synthesis loop is typically maintained between 7 and 15 MPa. When wind and solar power output increases sharply, the hydrogen production load can jump from low to full load within seconds, causing a large influx of hydrogen into the green ammonia synthesis loop and resulting in a rapid pressure increase; conversely, when wind and solar power output decreases sharply, the hydrogen supply decreases drastically, and the pressure of the green ammonia synthesis loop drops rapidly. The control method provided in this application can be deployed in the DCS (Distributed Control System) or PLC (Programmable Logic Controller) control system of this scenario. By sensing the pressure change rate in real time, it can actively adjust the opening of the inlet guide vane of the circulating gas compressor and the opening of the anti-surge valve of the raw material gas compressor before the pressure deviation is formed, effectively suppressing pressure overshoot and ensuring the safe operation of the catalyst bed in the synthesis tower and the stability of the ammonia net value.

[0053] Application Scenario 2: Gas Recycle Reaction Loop as a Green Methanol Synthesis Loop. In the green methanol synthesis scenario, green hydrogen produced from renewable energy sources reacts with industrially captured carbon dioxide or carbon monoxide in the methanol synthesis loop via a catalytic reaction. The methanol synthesis loop also consists of a compressor, synthesis tower, cooling and separation unit, and exhaust pipeline, with an operating pressure typically between 5 and 10 MPa. Similar to green ammonia synthesis, fluctuations in upstream hydrogen production load are directly transmitted to the green methanol synthesis loop, causing rapid pressure disturbances. Furthermore, the methanol synthesis reaction is highly sensitive to the hydrogen-to-carbon ratio (H2 / CO or H2 / CO2), and drastic pressure fluctuations can also affect reaction selectivity and byproduct formation.

[0054] Application Scenario 3: The gas recirculation reaction loop is a Fischer-Tropsch synthesis oil loop. In the Fischer-Tropsch synthesis scenario, green hydrogen and carbon monoxide react in the Fischer-Tropsch synthesis reactor to produce liquid hydrocarbon fuels through the action of a catalyst. The operating pressure of the Fischer-Tropsch synthesis loop is typically 2 to 4 MPa, with high reaction temperatures and large amounts of heat release, requiring strict coordinated control of pressure and temperature. When fluctuations in renewable energy output cause rapid changes in the syngas supply flow rate, the sharp fluctuations in the pressure of the Fischer-Tropsch synthesis oil loop not only affect the reaction conversion rate but may also trigger the risk of hot spot runaway in the catalyst bed. The control method of this application can be deployed in the control system of this scenario. Utilizing the rapid response capability of pressure change rate feedforward, it intervenes and adjusts at the initial stage of pressure disturbance, and, in conjunction with feedback control, achieves precise pressure stabilization, providing a safe and controllable operating environment for the Fischer-Tropsch synthesis reaction.

[0055] It should be understood that the above application scenarios are merely illustrative examples. The control method of this application is also applicable to other reaction systems with gas circulation, large inertia, and large hysteresis characteristics that face load fluctuation challenges, such as high-pressure polyethylene production and synthetic natural gas (SNG) preparation. As long as they face the problem of rapid disturbance of loop pressure caused by upstream supply fluctuations, the technical solution described in this application can be adopted and the corresponding technical effects can be obtained.

[0056] like Figure 1 The diagram shown is a system architecture diagram of a gas circulation reaction system provided in an embodiment of this application.

[0057] The gas circulation reaction system is powered by renewable energy 100 and includes: a raw material gas preparation unit 200 and a gas circulation reaction loop 300.

[0058] Renewable energy 100 is used to provide electricity to feedstock gas preparation unit 200.

[0059] In practical engineering, the specific form of renewable energy 100 can be a wind turbine array, a photovoltaic power station, or a wind-solar hybrid power generation system. The electrical energy output is transmitted to the power supply bus of the feedstock gas preparation unit 200 after passing through a step-up transformer and power electronic equipment. Since the output of wind power and photovoltaics is affected in real time by natural conditions such as wind speed and sunlight intensity, their power supply exhibits a wide fluctuation characteristic from seconds to minutes. This characteristic will be directly transmitted to the output load of the downstream feedstock gas preparation unit 200.

[0060] The feed gas preparation unit 200 receives electrical energy provided by renewable energy sources and generates feed gas required for the gas circulation reaction loop based on the electrical energy.

[0061] In one specific embodiment, the raw material gas preparation unit includes a water electrolysis hydrogen production device, which uses electricity provided by renewable energy to electrolyze water and generate hydrogen gas as the raw material gas required for the gas circulation reaction loop.

[0062] The specific type of water electrolysis hydrogen production device can be an alkaline electrolyzer (ALK), a proton exchange membrane electrolyzer (PEM), or a solid oxide electrolysis cell (SOEC), and this application does not limit this.

[0063] In another specific embodiment, the feedstock gas preparation unit 200 may further include an air separation unit that uses electricity provided by renewable energy to separate nitrogen from the air as another feedstock gas required for green ammonia synthesis. It should be understood that the specific composition of the feedstock gas preparation unit depends on the process requirements of the gas circulation reaction loop 300. For example, in a green methanol synthesis scenario, the feedstock gas preparation unit may also include a carbon dioxide capture device for capturing carbon dioxide from industrial exhaust gas or the atmosphere as a carbon source.

[0064] The gas circulation reaction loop 300 is connected to the raw material gas preparation unit 200 through a process pipeline, and receives the raw material gas generated by the raw material gas preparation unit 200 and carries out the catalytic synthesis reaction.

[0065] The gas circulation reaction loop 300 includes a pressure regulating mechanism, a reaction tower, a cooling separation unit, and a gas emission mechanism, with each component connected in a closed loop through process pipelines.

[0066] The reaction tower is filled with a catalyst bed, and the raw material gas undergoes a synthesis reaction on the catalyst bed under preset temperature and pressure conditions; the cooling and separation unit is used to condense and separate the reaction products from the circulating gas; the pressure regulating mechanism is used to regulate the loop pressure; and the gas emission mechanism is used to regulate the gas emission from the loop.

[0067] In one optional embodiment, the gas recirculation reaction loop 300 is a green ammonia synthesis loop. In this scenario, hydrogen and nitrogen generated by the feed gas preparation unit are mixed in a stoichiometric ratio (typically H2:N2 = 3:1) and then enter the green ammonia synthesis loop. The operating pressure range of the green ammonia synthesis loop is typically 7 to 15 MPa. The reaction tower is filled with an iron-based or ruthenium-based ammonia synthesis catalyst, and the following reaction occurs under high temperature and high pressure conditions: N2 + 3H2 2NH3. Since this reaction is a reversible exothermic reaction and is constrained by chemical equilibrium, the single-pass conversion rate is low (usually 15% to 25%). Therefore, the unreacted hydrogen and nitrogen are separated into liquid ammonia by the cooling separation unit, and then pressurized by the circulating gas compressor and sent back to the inlet of the reaction tower to form a closed loop.

[0068] The pressure regulating mechanism specifically includes the inlet guide vane actuator of the circulating gas compressor and the anti-surge valve actuator of the raw material gas compressor. The gas discharge mechanism is specifically the venting gas regulating valve actuator, which is used to discharge the inert gas (such as argon, methane, etc.) accumulated in the circuit to maintain the effective reaction partial pressure.

[0069] In another specific embodiment, the gas circulation reaction loop is a methanol synthesis loop. In this scenario, hydrogen generated by the feed gas preparation unit is mixed with carbon dioxide provided by the carbon dioxide capture device in a preset ratio before entering the methanol synthesis loop. The operating pressure range of the methanol synthesis loop is typically 5 to 10 MPa. The reaction tower is filled with a copper-based methanol synthesis catalyst, and the following reaction occurs under high temperature and high pressure conditions: CO2 + 3H2 CH3OH + H2O. Similar to the synthesis of green ammonia, the methanol synthesis is also a reversible exothermic reaction. Unreacted gas is separated into liquid methanol by a cooling separation unit and then recycled. The configuration of the pressure regulation mechanism and gas emission mechanism is similar to that of the green ammonia synthesis circuit, and will not be described in detail here.

[0070] In the aforementioned integrated architecture, fluctuations in renewable energy output are transmitted to the gas circulation reaction loop via the feedstock gas preparation unit, constituting the core technical problem this application aims to solve. Specifically, when wind or solar power output increases sharply, the hydrogen production load of the feedstock gas preparation unit can jump dramatically within seconds, causing a large influx of hydrogen into the gas circulation reaction loop and resulting in a rapid increase in loop pressure; conversely, when wind or solar power output drops sharply, hydrogen supply decreases drastically, and loop pressure drops rapidly. This wide-range, drastic fluctuation, ranging from seconds to minutes, places extremely high demands on the pressure control of the gas circulation reaction loop.

[0071] To address the aforementioned issues, the gas circulation reaction system of this embodiment further includes the control device described in the preceding embodiments. This control device is communicatively connected to the pressure detection unit, pressure regulating mechanism, and gas emission mechanism in the gas circulation reaction loop, and is used to execute the gas circulation reaction control method based on pressure change rate feedforward provided in this application. This control device acquires pressure data from the gas circulation reaction loop in real time and calculates the pressure change rate. Before a pressure deviation occurs, it determines the target opening adjustment amount based on the numerical range of the change rate and generates a feedforward control command to actively adjust the pressure regulating mechanism to suppress pressure fluctuations. Simultaneously, when the pressure drops sharply, it generates a decoupling compensation command to control the gas emission mechanism to increase the gas emission rate, achieving coordinated operation between pressure regulation and gas emission. In this way, this embodiment can effectively cope with rapid pressure disturbances caused by renewable energy fluctuations, ensuring the safe and stable operation of the gas circulation reaction loop under wide load conditions.

[0072] It should be understood that although this embodiment uses a green ammonia synthesis loop and a methanol synthesis loop as examples for detailed description, the application of the system in this application is not limited to these. In other embodiments, the gas circulation reaction loop can also be a Fischer-Tropsch synthesis oil loop, a synthetic natural gas production loop, or a high-pressure polyethylene production loop, etc. As long as it is driven by renewable energy as a primary energy source, provides raw material gas through a raw material gas preparation unit, and faces the problem of rapid disturbance of loop pressure caused by fluctuations in renewable energy, the full-chain integrated architecture and the aforementioned control strategy described in this embodiment can be adopted, and the corresponding technical effects can be obtained.

[0073] Example 1

[0074] Reference Figure 2 , Figure 2 A schematic flowchart of a gas circulation reaction control method based on pressure change rate feedforward provided in this application embodiment is shown below. Figure 2 As shown in the embodiment of this application, a gas circulation reaction control method based on pressure change rate feedforward may include steps S201 to S205, which are described in detail below.

[0075] Step S201: Obtain real-time pressure data of the gas circulation reaction loop and calculate the pressure change rate based on the real-time pressure data; the gas circulation reaction loop includes a pressure regulating mechanism, a reaction tower, a cooling separation unit, and a gas emission mechanism.

[0076] For example, real-time pressure data is continuously acquired at a preset high-frequency sampling period by a pressure transmitter installed at a key node (such as the outlet of a buffer tank or cooling separation unit) in the gas circulation reaction loop.

[0077] For example, the pressure change rate dP / dt is calculated in real time based on real-time pressure data using a differential algorithm or other differential calculation methods. The reason this embodiment chooses the pressure change rate instead of the traditional pressure deviation as the core control variable is that in large-volume, high-inertia systems like gas circulation reactions, the formation of pressure deviation often lags behind the occurrence of disturbances by several seconds or even tens of seconds. If feedback regulation relies solely on the deviation, the system will inevitably produce significant overshoot and oscillations. The pressure change rate, however, can directly characterize the intensity and direction of the disturbance, essentially providing a trend perception of the system's future pressure trajectory, thus providing a basis for subsequent proactive regulation and overcoming the lag defect.

[0078] Step S202: In response to the absolute value of the pressure change rate satisfying the preset trigger condition, the target opening adjustment amount of the pressure regulating mechanism is determined according to the numerical range of the pressure change rate.

[0079] For example, step S202 may include steps A1 to A2.

[0080] Step A1: Compare the absolute value of the pressure change rate with a plurality of incremental first thresholds to determine the target numerical range in which the pressure change rate falls.

[0081] Multiple first thresholds constitute the boundaries for classifying fluctuation levels. For example, three incremental first thresholds can be set, corresponding to three levels: small fluctuations, moderate fluctuations, and severe fluctuations, respectively. It should be understood that although three incremental first thresholds are used as an example here, in other embodiments, the number of first thresholds can be flexibly set to two, four, or more levels according to the dynamic characteristics of the controlled object, as long as the conditions of "multiple" and "incremental" are met. This application does not impose any restrictions on this.

[0082] Step A2: From the preset mapping relationship between numerical ranges and opening adjustment amounts, find the target opening adjustment amount corresponding to the target numerical range, wherein the opening adjustment amount of the pressure regulating mechanism increases as the numerical range increases.

[0083] Specifically, the above process can be executed by a three-level threshold feedforward controller.

[0084] After determining the target numerical range into which the absolute value of the pressure change rate falls, the target opening adjustment amount bound to that range is obtained by querying a preset mapping table or calling a piecewise function. This mapping relationship follows a monotonically increasing principle, meaning the higher the numerical range containing the absolute value of the pressure change rate, the larger the corresponding target opening adjustment amount. For example, when |dP / dt| is in the first range defined by the minimum first threshold, the system matches a smaller basic opening adjustment amount; when |dP / dt| crosses to a higher range defined by a larger first threshold, the system matches a significantly larger opening adjustment amount. The aforementioned adaptive matching strategy is superior to traditional single threshold triggering or purely linear proportional control. If a single fixed-gain feedforward control is used, when facing weak disturbances, the fixed large gain can easily cause the actuator to move too abruptly, leading to pressure reverse overshoot and system oscillation; while when facing severe shocks, the fixed small gain cannot provide sufficient compensation torque, causing the pressure deviation to continue to expand. Similarly, while purely linear proportional control is theoretically continuous, in actual industrial settings, due to sensor noise and the dead-zone characteristics of the actuator, the linear relationship is often difficult to tune precisely, and it is prone to saturation under extreme conditions. In contrast, the multi-level threshold matching mechanism adopted in this embodiment allows technicians to independently adjust the compensation intensity for different levels of fluctuations. This ensures both rapid suppression under strong disturbances and smooth transition under weak disturbances, thereby achieving global optimization of control performance over a wide load range.

[0085] Furthermore, to further enrich the mapping forms between numerical intervals and opening adjustment amounts, in addition to the aforementioned discrete step-like mapping, this application can also employ piecewise linear interpolation or polynomial fitting to achieve the effect of "increasing with the numerical interval." For example, a linear line segment with a different slope can be defined between each adjacent first threshold, so that the opening adjustment amount increases linearly within each numerical interval, while maintaining a continuous or smooth transition at the connection points of the numerical intervals. This method can provide finer control resolution while preserving the robustness of graded control and reducing command jumps caused by gear shifting. Regardless of the specific mathematical expression used, as long as it embodies the core concept of dynamically adjusting the feedforward opening adjustment amount based on the intensity of pressure change rate, it should be covered within the protection scope of this application.

[0086] For example, the multiple first thresholds can be 0.2MPa / s, 0.5MPa / s, and 1.0MPa / s, respectively.

[0087] For example, the preset trigger condition is that the absolute value of the pressure change rate exceeds a certain minimum threshold (i.e., the minimum first threshold), indicating that the system has detected a meaningful pressure fluctuation and needs to activate feedforward control.

[0088] Step S203: Generate feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism.

[0089] Based on the determined target opening adjustment amount and the sign (positive or negative) of the pressure change rate, the final feedforward control quantity is calculated. This feedforward control command is essentially an open-loop coarse adjustment signal. Its function is to proactively change the working state of the pressure regulating mechanism before the pressure deviation accumulates significantly, thereby counteracting the impending disturbance energy. For example, when a rapid pressure rise is detected, the feedforward command will reduce the compressor guide vane opening or open the anti-surge valve in advance, thus physically curbing further pressure increases. This trend-based proactive intervention complements traditional feedback control, significantly shortening the system's response time.

[0090] Step S204: In response to the negative decrease in the pressure change rate satisfying the preset sudden drop condition, a decoupling compensation command is generated. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission.

[0091] The negative component of the pressure change rate can be monitored in real time. When the pressure drop rate exceeds a critical condition indicating a sudden drop, it is determined that not only is there a risk of pressure imbalance, but also a risk of component imbalance. This is because in gas cycle reactions, a sudden pressure drop usually indicates a sharp reduction or consumption of effective reactant gases, leading to a passive increase in the relative mole fraction of inert gases such as nitrogen and argon in the loop. If not addressed promptly, the accumulation of inert gases will reduce the effective partial pressure, thereby affecting the reaction conversion rate and net product value. Therefore, this embodiment introduces decoupling compensation logic, which actively increases the emission rate of the gas emission mechanism during a sudden pressure drop, discharging the enriched inert gases through displacement and maintaining the dynamic balance of the loop components. This design breaks the traditional separation between pressure regulation and component management, achieving synergistic optimization of both.

[0092] For example, the preset sudden drop condition refers to a pressure change rate that is negative and its absolute value exceeds a preset first preset threshold.

[0093] For example, the first preset threshold can be determined based on the actual situation, and is not limited here.

[0094] In step S205, the feedforward control command is output to the pressure regulating mechanism, and the decoupling compensation command is output to the gas emission mechanism.

[0095] For example, feedforward control commands are sent to the inlet guide vane actuator of the recirculating gas compressor and / or the anti-surge valve actuator of the feed gas compressor to quickly adjust the compressor's work capacity or reflux state; simultaneously, decoupling compensation commands are independently sent to the venting gas regulating valve actuator to regulate the emission flux of exhaust gas or inert gas. These two commands are output in parallel in the time domain, but they have different focuses in terms of control objectives: the former focuses on rapid pressure stabilization, while the latter focuses on long-term component optimization. Through this dual-channel parallel execution mechanism, the system can simultaneously complete the dual regulation of pressure and components in a very short time, effectively avoiding coupled oscillations caused by single-variable regulation, and ensuring the safe, stable, and efficient operation of the gas recirculation reaction system under wide load fluctuation conditions.

[0096] Example 2

[0097] Based on Example 1, this example further specifies the logic for generating feedforward control commands. As one implementation method, generating feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism includes steps B1 to B2.

[0098] Step B1: Based on formula U ff =A×K ff ×sign(dP / dt) calculates the feedforward control quantity, U ff Let A be the feedforward control variable, and K be the target opening adjustment variable. ff The preset feedforward proportional coefficient is used, and sign(dP / dt) is the sign function of the pressure change rate.

[0099] This formula transforms the discrete or segmented target opening adjustment A determined in Example 1 into a continuous control signal U that has both magnitude and direction. ff In this formula, parameter A represents the baseline amplitude of energy compensation determined by the current rate of pressure change; its magnitude directly reflects the severity of the disturbance's impact on the system. Parameter K... ff The preset feedforward proportional coefficient is used to perform gain correction on the reference amplitude to adapt to the volumetric characteristics, compressor performance curves and pipeline resistance differences of different gas circulation reaction loops.

[0100] In practical engineering applications, K ff It is not a constant that remains unchanged. Technicians can optimize it through offline simulation or online self-tuning to ensure that the feedforward control quantity can effectively suppress disturbances without causing new oscillations due to excessive gain.

[0101] It should be understood that although this embodiment provides a specific product formula, in other embodiments, more complex mathematical expressions including additive bias, exponential correction, or polynomial fitting can be used to describe U. ff With A, K ff The functional relationship between dP / dt, as long as its core logic is still based on the trend of the rate of change and the target adjustment to generate feedforward instructions, should be covered within the scope of protection of this application.

[0102] The sign function `sign(dP / dt)` in the formula ensures a strict physical and logical unity between the feedforward control action and the pressure change trend. When the pressure change rate `dP / dt` is positive, it indicates that the pressure in the gas circulation reaction loop is increasing, and `sign(dP / dt)` outputs +1, instructing the pressure regulating mechanism to suppress the pressure increase. Conversely, when `dP / dt` is negative, it indicates that the pressure in the gas circulation reaction loop is decreasing, and `sign(dP / dt)` outputs -1, instructing the pressure regulating mechanism to prevent the pressure decrease. This automatic direction determination mechanism based on mathematical symbols completely replaces the traditional control method that relies on manual experience or complex logical judgments to determine the adjustment direction. This allows the system to accurately lock the correct adjustment path within a millisecond timescale, avoiding the risk of positive feedback runaway due to direction misjudgment.

[0103] Step B2: Generate the feedforward control command containing the feedforward control quantity.

[0104] For example, the calculated feedforward control quantity U ff Ultimately, this is translated into specific valve action commands and output in parallel to the inlet guide vane actuator of the recirculating gas compressor and the anti-surge valve actuator of the feed gas compressor. For example, when the pressure change rate dP / dt > 0 is detected, the feedforward control quantity calculated by the formula will drive the inlet guide vane actuator of the recirculating gas compressor to reduce the guide vane opening, thereby reducing the compressor's work capacity and recirculating gas flow, reducing the driving force for pressure increase at the source; at the same time, the feedforward control command will also drive the anti-surge valve actuator of the feed gas compressor to appropriately open the anti-surge valve, further alleviating the pressure accumulation in the pipeline network by increasing backflow or venting, and providing additional surge margin protection for the compressor.

[0105] Conversely, when the pressure change rate dP / dt < 0 is detected, the feedforward control command drives the inlet guide vane actuator of the recirculating gas compressor to increase the guide vane opening to enhance the boosting capacity, while simultaneously driving the anti-surge valve actuator of the raw material gas compressor to close the valve to reduce ineffective leakage, thereby jointly maintaining the stability of the loop pressure. Through this coordinated linkage of the two actuators, this embodiment not only achieves rapid suppression of pressure fluctuations but also effectively ensures the operational safety of the compressor unit, preventing fluid mechanical failures such as surge or blockage induced by excessive single-point adjustment during drastic switching of operating conditions.

[0106] Example 3

[0107] Based on Example 1, this example further details the principles for generating decoupling compensation instructions. As one implementation method, generating decoupling compensation instructions includes the following steps C1 to C2.

[0108] Step C1: Determine the decoupling compensation amount based on the absolute value of the pressure change rate, wherein the decoupling compensation amount is positively correlated with the absolute value of the pressure change rate.

[0109] Step C2: Generate the decoupling compensation instruction containing the decoupling compensation amount.

[0110] Understandably, this application establishes an adaptive correlation mechanism between the pressure change rate and component management. When a negative decrease in the pressure change rate is detected and a preset sudden drop condition is met, it indicates that the gas recirculation reaction loop is in a state of rapid depressurization. In gas recirculation reaction processes, a sharp drop in pressure usually corresponds directly to a sudden reduction in the upstream feed gas supply or a sudden increase in downstream consumption. This means that the total amount of effective gases (such as hydrogen and nitrogen) participating in the reaction within the gas recirculation reaction loop is rapidly decreasing. However, the inert gases (such as argon and methane) originally present in the gas recirculation reaction loop do not participate in the reaction consumption, and their absolute molar amount remains relatively constant for a short period of time. According to Dalton's law of partial pressures and the ideal gas law, when the total pressure of the gas recirculation reaction loop decreases rapidly due to the reduction of effective gas, although the partial pressure of the inert gas may also decrease accordingly, its mole fraction (i.e., relative concentration) will passively and significantly increase due to the weakening dilution effect of the effective components. This relative enrichment of inert gases will directly reduce the partial pressure of the effective reactants, causing the chemical equilibrium to shift towards the reverse reaction direction, thereby resulting in a decrease in the net product value and a decline in catalyst efficiency.

[0111] For the reasons mentioned above, this embodiment provides a control strategy in which the decoupling compensation amount is positively correlated with the absolute value of the pressure change rate. The term "positively correlated" means that the faster the pressure decreases (i.e., the larger |dP / dt| is), the more severe the loss of effective gas and the steeper the upward trend of the relative concentration of inert gas, thus the larger the calculated decoupling compensation amount.

[0112] By employing the above method, the action range of the gas emission mechanism can be dynamically adjusted according to the severity of the disturbance: when faced with slight pressure fluctuations, only a small decoupling compensation amount is output to avoid material waste caused by excessive emission; while when faced with severe pressure drop shocks, a larger decoupling compensation amount is automatically output, driving the gas emission mechanism (such as the venting gas regulating valve actuator) to significantly increase the emission volume, thereby preemptively expelling the inert gas that has become excessive due to relative concentration before the pressure recovers, maintaining the dynamic balance of the loop components. This dynamic matching mechanism based on the absolute value of the pressure change rate solves the problem that traditional fixed-value emission or manual intervention cannot adapt to wide-load and rapid fluctuation conditions, achieving deep synergy between pressure stability control and component optimization management.

[0113] It should be understood that although this embodiment describes the positive correlation logic based on the absolute value of the pressure change rate, in other alternative implementations, the basis for determining the decoupling compensation amount can be further combined with auxiliary parameters such as real-time detected inert gas concentration analyzer readings, current load percentage of the loop, or reaction tower bed temperature for multivariate correction.

[0114] For example, given the same rate of pressure change, if the current baseline concentration of inert gas is already high, an additional gain coefficient can be added to further increase the decoupling compensation, thus addressing a more severe risk of component imbalance. Regardless of the specific correction strategy employed, as long as it retains the technical concept of using the absolute value of the rate of pressure change as the core driving factor and reflects a positive correlation adjustment trend, it should be covered within the scope of protection of this application.

[0115] The setting of preset sudden drop conditions should not be limited to a single threshold judgment. Multiple methods such as the average drop rate within a sliding window and the fitting of the drop trend of multiple consecutive sampling points can be used to comprehensively determine whether the decoupling compensation logic is triggered, so as to improve the anti-interference ability and the accuracy of triggering.

[0116] Example 4

[0117] Based on Example 3, this example further quantifies and limits the specific calculation method for the decoupling compensation amount. As one implementation method, determining the decoupling compensation amount based on the absolute value of the pressure change rate includes: based on formula U... decouple =C×|dP / dt|×K decouple The decoupling compensation amount is calculated, where U decouple The decoupling compensation amount is given by C, which is a preset constant, |dP / dt| is the absolute value of the pressure change rate, and K is the value of K. decouple This is the preset decoupling ratio coefficient.

[0118] This formula transforms the logic of the absolute value of the pressure change rate being positively correlated with the decoupling compensation amount in Example 3 into a precisely executable engineering algorithm. In the formula, |dP / dt| directly reflects the severity of the pressure loss in the gas circulation reaction loop; the preset constant C is mainly used for dimension conversion and reference gain setting to ensure that the calculation results match the physical adjustment range of the gas emission mechanism.

[0119] Preset decoupling ratio coefficient K decouple The magnitude of K depends on the sensitivity of the gas circulation reaction loop to the accumulation of inert gases and the flow capacity of the purge gas discharge pipe. For example, for a large-volume green ammonia synthesis loop with low tolerance for inert gases, K... decouple It is usually tuned to a larger value to enhance the compensation response; however, for systems with smaller volume or stronger buffering capacity, the coefficient can be appropriately reduced to avoid overshoot.

[0120] It should be understood that although this embodiment provides a calculation formula in the form of a three-parameter product, in other embodiments, this formula can also be transformed into a linear equation containing a constant bias term (such as U). decouple =C×|dP / dt|×K decouple (+B), or introduce higher-order polynomial fitting to describe more complex nonlinear relationships, as long as it retains the core concept of calculating the decoupling compensation amount with the absolute value of the pressure change rate as the independent variable, it should be covered within the scope of protection of this application. B is a preset constant bias term.

[0121] Combination Figure 1 The system architecture shown above, and the decoupling compensation amount U calculated using the above formula. decouple The data is transmitted in real time to the venting control valve actuator and converted into a specific valve opening adjustment amount.

[0122] In this embodiment, to balance component replacement efficiency and system material balance, the decoupling compensation is configured to add an additional emission opening of 0 to 20% on top of the normal emission baseline. This means that when the pressure drop in the gas recirculation reaction loop is relatively gradual and |dP / dt| is small, the calculated U decouple Only a small increase in valve opening (e.g., 1% to 3%) is needed for gentle component fine-tuning; however, when the pressure in the gas circulation reaction loop experiences a precipitous drop and |dP / dt| reaches its maximum, U decoupleThe flow rate rapidly saturates to the upper limit, driving the valve to open an additional 20% of the flow, creating a powerful inert gas purge flow. This dynamic adjustment range of 0% to 20% is an optional range verified based on extensive industrial field data: if the upper limit is below 20%, accumulated argon or methane may not be discharged in time under extreme conditions, leading to a continuous decrease in the net ammonia value; if the upper limit is too high, excessive loss of effective hydrogen and nitrogen may occur during the compensation process, even triggering secondary pressure fluctuations. Therefore, this formula not only defines the generation logic of the decoupled compensation amount but also achieves dynamic adaptation between the compensation force and the disturbance intensity through coordination with the physical limits of the actuator.

[0123] Compared to traditional fixed-step compensation or manual intervention modes, the formulaic calculation method used in this embodiment has significant technical advantages. Fixed compensation strategies often result in excessive emissions and material waste when facing minor disturbances, while failing to curb component deterioration when facing severe shocks due to emission caps. Manual intervention is limited by human reaction speed and judgment differences, making it difficult to cope with pressure shocks that change on a second-by-second basis. This application, however, utilizes a U... decouple =C×|dP / dt|×K decouple This mathematical model enables the decoupling compensation action to be driven entirely by objective pressure change trends, achieving a leap from passive response to active quantitative matching. In actual operation, this mechanism ensures that every pressure drop event receives just the right amount of component compensation, avoiding catalyst efficiency degradation caused by inert gas accumulation and minimizing material loss due to excessive emissions, thereby maintaining the efficient and stable operation of the gas circulation reaction system under wide load fluctuation conditions.

[0124] Example 5

[0125] Based on Examples 1 to 4, this example further improves the overall architecture of the gas circulation reaction system and constructs a composite control mechanism that combines feedforward and feedback. As one implementation method, the method also includes steps D1 to D3.

[0126] Step D1: Obtain the pressure setpoint of the gas circulation reaction loop and calculate the pressure deviation between the pressure setpoint and the real-time pressure data.

[0127] The pressure setpoint can be a constant target value specified by the process, or a dynamically optimized value calculated in real time based on the current production load, raw material composition, or ambient temperature.

[0128] Pressure deviation characterizes all disturbances not covered by the feedforward model, as well as the static error remaining after feedforward adjustment. Although the feedforward control described above can quickly suppress major disturbances based on the rate of pressure change, the complexity of gas cycle reaction systems often leads to factors such as sensor measurement noise, actuator dead zones, model parameter drift, and unmeasurable external disturbances in actual operating conditions. This makes it difficult to accurately stabilize the pressure at the setpoint using only open-loop feedforward. Therefore, the calculation of pressure deviation provides an indispensable error correction benchmark for the system.

[0129] Step D2: Based on the pressure deviation, generate feedback control commands through the feedback controller.

[0130] In this embodiment, the feedback controller typically employs a PID algorithm or other advanced closed-loop control algorithm. Unlike feedforward control, which focuses on the trend of pressure changes, the feedback controller focuses on the difference between the current state and the target. When the pressure deviation is not zero, the feedback controller continuously outputs an adjustment amount aimed at eliminating the deviation, based on the magnitude, duration, and rate of change of the deviation. For example, if the pressure is still slightly higher than the set value after feedforward adjustment, the integral terminator of the feedback controller will accumulate over time, slowly and steadily adjusting the opening of the pressure regulating mechanism until the deviation is completely eliminated. Although the response speed of this deviation-based adjustment mechanism is limited by system inertia, it possesses inherent steady-state zero-error characteristics, effectively overcoming the long-term drift problem caused by feedforward model mismatch and ensuring the control accuracy of the system during long-term operation.

[0131] Step D3: Fuse the feedforward control command and the feedback control command to obtain a composite control command.

[0132] Understandably, the composite control command is sent to the pressure regulating mechanism. From the perspective of time-domain response, this fusion is not a simple numerical addition, but rather a deep complementarity and division of labor between the two control strategies on the time scale. In the initial stage of a disturbance, the pressure change rate increases sharply, and the feedforward control command is quickly generated and takes the lead, driving the actuator to make significant movements within milliseconds to preemptively offset the disturbance energy and prevent the pressure from deviating significantly from the set value. At this time, since the pressure deviation has not yet accumulated significantly, the output of the feedback control command is relatively small. As the feedforward effect takes hold, the pressure change rate gradually slows down, and the feedforward command weakens accordingly. At the same time, if there is still a small residual deviation in the gas circulation reaction loop, the feedback control command gradually strengthens and takes over control, performing fine-tuning and steady-state correction of the system until the pressure accurately returns to the set value.

[0133] This embodiment successfully integrates the speed of feedforward control and the accuracy of feedback control by constructing a two-layer composite control architecture that combines coarse-tuning with fine-tuning with feedforward control. Compared to single feedforward control, this architecture eliminates the risk of steady-state error caused by model imperfections; compared to traditional single-feedback PID control, this architecture significantly advances the response window, avoiding severe overshoot and oscillations caused by the accumulation of waiting bias in systems with large time delays.

[0134] It should be understood that although this embodiment uses signal fusion as the implementation form of composite control, in other embodiments, more advanced algorithm frameworks such as Model Predictive Control (MPC) can be used to inherently integrate feedforward and feedback logic. As long as it embodies the core concept of using the trend of the rate of change for advance adjustment and using the deviation for closed-loop correction, it should be covered within the protection scope of this application.

[0135] In one optional implementation, outputting the feedforward control command to the pressure regulating mechanism includes: outputting a composite control command to the pressure regulating mechanism.

[0136] The composite control command includes feedforward control commands for feedforward control and feedback control commands for feedback control. The command is ultimately converted into a standard industrial control signal (such as a 4-20mA current signal or a digital bus protocol frame) and sent to the pressure regulating mechanism in real time.

[0137] In this embodiment, the pressure regulating mechanism mainly includes a circulating gas compressor inlet guide vane actuator and a feed gas compressor anti-surge valve actuator. The composite control command, according to a preset allocation strategy, simultaneously or selectively drives the aforementioned actuators. For example, under pressure rising conditions, the composite control command may primarily act to reduce the opening of the circulating gas compressor inlet guide vane while fine-tuning the anti-surge valve opening to maintain surge margin; while under pressure falling conditions, it primarily drives the guide vane to open wider to increase pressurization capacity. This mechanism, which directly maps the composite control command to the physical execution layer, ensures that the control strategy can be seamlessly translated into actual process regulation actions.

[0138] This application also provides a validated preferred parameter configuration for wide-load steady-flow control in a green ammonia synthesis loop. The sampling period for real-time pressure data is set to 50ms. This high-frequency sampling setting is the physical basis for matching the second-level or even sub-second-level fluctuations in renewable energy hydrogen production load. If the sampling period is too long (such as the conventional 100ms or 200ms), it will be impossible to accurately capture the pressure change rate, which can reach a peak of 2.0MPa / s, resulting in feedforward trigger delay or graded judgment distortion; while the 50ms sampling frequency can ensure sensitive perception of fast-changing signals, while also taking into account the computational load and signal filtering requirements of the industrial controller, making it the optimal solution for balancing real-time performance and stability.

[0139] In this embodiment, the parameters of the feedback PID controller are tuned as follows: proportional gain Kp = 2.5, integral time Ti = 30s, and derivative time Td = 5s. It is important to note that these parameters are fundamentally different from those in traditional single PID control. In traditional control, PID controllers often require a large proportional gain and a short integral time to achieve fast response, but this easily leads to oscillations. However, in the composite control architecture of this application, since the feedforward control already undertakes most of the dynamic disturbance suppression task, the feedback PID controller focuses on steady-state fine-tuning and residual elimination. Therefore, the selected Kp = 2.5 is relatively small to avoid conflict with the feedforward action; the relatively long integral time Ti = 30s ensures that the system will not experience excessive integral accumulation due to instantaneous noise, guaranteeing long-term operational stability; the derivative action Td = 5s is used to help suppress the small overshoot of the feedback loop itself, further improving steady-state accuracy.

[0140] In this embodiment, the pressure setpoint Pset of the gas circulation reaction loop is set to 14.2 MPa. This value is a benchmark operating point determined based on the thermodynamic equilibrium of the ammonia synthesis reaction, the catalyst activity window, and the compressor's safe operating envelope. It should be understood that although this embodiment provides a specific value of 14.2 MPa, this pressure setpoint is not static in actual industrial applications. The pressure setpoint can be calculated and dynamically updated in real time through an upper-level optimization model based on current production load, ambient temperature, raw material gas purity, or downstream ammonia demand. Regardless of whether the pressure setpoint is fixed or dynamically changing, the composite control mechanism in this application uses it as a benchmark, and through the fusion of feedforward and feedback, ensures that the actual pressure accurately tracks the target trajectory.

[0141] Based on the above-mentioned optimized parameter configuration, the system exhibited excellent control performance under typical test conditions involving a 100% to 110% load increase. Actual test data shows that, thanks to 50ms sampling and precise feedforward grading, the system response delay was reduced to less than 0.5 seconds; with feedback parameters of Kp=2.5 and Ti=30s, the pressure overshoot was stably controlled at approximately 0.25MPa, the adjustment time was shortened to 3.2 seconds, and the compressor surge protection was not triggered throughout the process. This specific embodiment not only verifies the effectiveness of the technical solution of this application but also provides a directly referable parameter baseline and debugging direction for the engineering implementation of similar gas circulation reaction systems.

[0142] Example 6

[0143] The above describes a gas circulation reaction control method based on pressure change rate feedforward provided by the embodiments of this application. The following will describe the apparatus for implementing the above-described gas circulation reaction control method based on pressure change rate feedforward.

[0144] Please see Figure 3 , Figure 3 This is a schematic diagram of a gas circulation reaction control device based on pressure change rate feedforward, provided as an embodiment of this application. Figure 3 As shown, the gas circulation reaction control device based on pressure change rate feedforward includes:

[0145] The first acquisition module 31 is used to acquire real-time pressure data of the gas circulation reaction loop and calculate the pressure change rate based on the real-time pressure data; the gas circulation reaction loop is composed of at least a pressure regulating mechanism, a reaction tower, a cooling separation unit and a gas emission mechanism connected in a closed manner through process pipelines;

[0146] The first determining module 32 is used to determine the target opening adjustment amount of the pressure regulating mechanism according to the numerical range of the pressure change rate in response to the absolute value of the pressure change rate satisfying the preset trigger condition.

[0147] The first generation module 33 is used to generate a feedforward control command based on the target opening adjustment amount of the pressure regulating mechanism;

[0148] The second generation module 34 is used to generate a decoupling compensation command in response to the negative decrease in the pressure change rate satisfying the preset sudden drop condition. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission.

[0149] Output module 35 is used to output the feedforward control command to the pressure regulating mechanism and the decoupling compensation command to the gas emission mechanism.

[0150] In one optional implementation, the first determining module includes:

[0151] The first determining unit is used to compare the absolute value of the pressure change rate with a plurality of incremental first thresholds to determine the target numerical range in which the pressure change rate is located.

[0152] The lookup unit is used to find the target opening adjustment amount corresponding to the target numerical range from the preset mapping relationship between the numerical range and the opening adjustment amount, wherein the opening adjustment amount of the pressure regulating mechanism increases as the numerical range increases.

[0153] In one optional implementation, the first generation module includes:

[0154] The first calculation unit is used to calculate based on formula U. ff =A×K ff The feedforward control quantity, U, is obtained by calculating ×sign(dP / dt). ffLet A be the feedforward control variable, and K be the target opening adjustment variable. ff The preset feedforward proportional coefficient is used, and sign(dP / dt) is the sign function of the pressure change rate;

[0155] The first generation unit is used to generate the feedforward control command containing the feedforward control quantity.

[0156] In one alternative implementation, the second generation module includes:

[0157] The second determining unit is used to determine the decoupling compensation amount based on the absolute value of the pressure change rate, wherein the decoupling compensation amount is positively correlated with the absolute value of the pressure change rate.

[0158] The second generation unit is used to generate the decoupling compensation instruction containing the decoupling compensation amount.

[0159] In one optional implementation, the second determining unit is specifically used for:

[0160] Based on formula U decouple =C×|dP / dt|×K decouple The decoupling compensation amount is calculated, where U decouple The decoupling compensation amount is given by C, which is a preset constant, |dP / dt| is the absolute value of the pressure change rate, and K is the value of K. decouple This is the preset decoupling ratio coefficient.

[0161] In one alternative implementation, it also includes:

[0162] The second acquisition module is used to acquire the pressure setpoint of the gas circulation reaction loop and calculate the pressure deviation between the pressure setpoint and the real-time pressure data.

[0163] The feedback control module is used to generate feedback control commands through the feedback controller based on the pressure deviation.

[0164] The fusion module is used to fuse the feedforward control command and the feedback control command to obtain a composite control command.

[0165] In one alternative implementation, the output module includes:

[0166] The output unit is used to output the composite control command to the pressure regulating mechanism.

[0167] Example 7

[0168] This embodiment is based on the process parameters and control system model of a thousand-ton skid-mounted green ammonia synthesis unit. A simulation platform is used to dynamically simulate and verify the control method described in this application, so as to further illustrate the technical effect of this application in actual engineering applications.

[0169] The simulation object is a green ammonia synthesis loop, which mainly includes: a feed gas compressor (inlet pressure 1.6 MPa, outlet pressure 8.2 MPa), a circulating gas compressor (inlet pressure 13.8 MPa, outlet pressure 14.5 MPa, rated flow rate 22000 Nm³ / h), a synthesis tower, and a cooling and separation unit. The total volume of the green ammonia synthesis loop is 120 m³, and the pressure setpoint is 14.2 MPa. The feed gas preparation unit is a water electrolysis hydrogen production device. The output hydrogen flow rate of the water electrolysis hydrogen production device fluctuates with wind power, with a fluctuation range of 20%~110% of the rated value, and the pressure change rate can reach 0.5~2.0 MPa / s.

[0170] The feedforward controller outputs the target opening adjustment based on the pressure change rate dP / dt. Multiple incremental first thresholds are set to 0.2 MPa / s, 0.5 MPa / s, and 1.0 MPa / s, respectively, with a preset feedforward proportional coefficient K. ff =0.8. The feedback controller uses a standard PID controller with a proportional gain Kp = 2.5, integral time Ti = 30s, and derivative time Td = 5s. The sampling period is 50ms. All simulations use the variable step size solver ode45, with a relative error of 1e. -4 The simulation lasted 300 seconds.

[0171] Verification Condition 1: Step Increase in Rated Load

[0172] In this simulation, due to a sudden increase in upstream wind power output, the feed gas flow rate jumps from 5500 Nm³ / h to 6050 Nm³ / h within 5 seconds, corresponding to a load increase from 100% to 110%, and the peak pressure change rate reaches 1.2 MPa / s.

[0173] The pressure transmitter acquires real-time pressure data of the ammonia synthesis circuit at 50ms intervals and calculates dP / dt = ΔP / Δt in real time, where Δt = 50ms, Δt is one cycle, and ΔP is the change in pressure data of the ammonia synthesis circuit within one cycle. In this operating condition, |dP / dt| = 1.2MPa / s, exceeding the maximum first threshold (1.0MPa / s), which is immediately identified as a severe fluctuation. Assuming the target opening adjustment A = 70% corresponds to the severe fluctuation, the output feedforward control quantity U is... ff =K ff ×A×sign(dP / dt)=0.8×70%×(+1)=56%, within 0.5 seconds, a command to reduce the opening degree is sent to the inlet guide vane actuator of the circulating gas compressor, and at the same time, a command to slightly open is sent to the anti-surge valve actuator of the raw material gas compressor, for example, from 0% to 8%. The feedback PID controller performs fine correction on the residual deviation after feedforward.

[0174] Simulation results: The pressure in the gas recirculation reaction loop increased from 14.2 MPa to a maximum of 14.45 MPa, with an overshoot of 0.25 MPa, representing an overshoot of 1.76% relative to the pressure setpoint of 14.2 MPa. The settling time, from the start of the disturbance to the pressure recovering to within ±0.05 MPa, was 3.2 seconds. The compressor surge margin decreased to a minimum of 12%, not entering the surge zone (surge boundary margin 10%). The purge gas discharge remained at the normal value of 0%, without triggering additional emissions.

[0175] Verification Condition 2: Step Decrease in Rated Load

[0176] In this simulation, due to a sudden decrease in upstream wind power output, the feed gas flow rate drops from 5500 Nm³ / h to 4400 Nm³ / h within 5 seconds, corresponding to a load decrease from 100% to 80%, and the peak pressure change rate reaches -1.5 MPa / s, with an absolute value of 1.5 MPa / s.

[0177] When |dP / dt| = 1.5 MPa / s, exceeding the maximum first threshold, the feedforward controller sends an opening increase command (e.g., from 65% to 75%) to the inlet guide vane actuator of the recirculating gas compressor within 0.5 seconds, and simultaneously sends a closing command (e.g., from 0% to fully closed) to the anti-surge valve actuator of the raw material gas compressor. Furthermore, since dP / dt = -1.5 MPa / s negatively exceeds the preset drop condition (-0.5 MPa / s), decoupling compensation is activated synchronously, according to the formula:

[0178] U decouple =0.2×|dP / dt|×K decouple =0.2×1.5×0.8=0.24 Calculate the purge gas compensation control quantity, i.e., the decoupling compensation quantity. Increase the purge gas emission quantity by 12% from the normal value, such as from 0% to 12%, by adjusting the opening of the purge gas regulating valve. The feedback PID controller continues to correct the residual.

[0179] Simulation results: The pressure in the gas circulation reaction loop decreased from 14.2 MPa to a minimum of 13.95 MPa, with a negative overshoot of 0.25 MPa and a settling time of 2.8 seconds. The compressor surge margin was at least 15%, indicating safe operation. The purge gas discharge increased to 12% during the pressure drop, gradually returning to 0% after 20 seconds. The argon mole fraction in the loop increased from an initial 2.5% to a maximum of 2.8% (reaching 3.5% without decoupling compensation), effectively suppressing the accumulation of inert gases.

[0180] Verification Condition 3: Continuous Fluctuation Condition

[0181] This simulation underwent three consecutive large fluctuations within 120 seconds: from the 20th to the 40th second, the feed gas flow rate gradually increased from 5500 Nm³ / h to 6600 Nm³ / h (120% load), with a peak dP / dt of 1.8 MPa / s; from the 50th to the 70th second, the flow rate decreased from 6600 Nm³ / h to 3300 Nm³ / h (60% load), with a peak dP / dt of -2.0 MPa / s; from the 90th to the 110th second, the flow rate recovered from 3300 Nm³ / h to 5500 Nm³ / h, with a peak dP / dt of 1.4 MPa / s. Following the aforementioned logic for continuous response, the feedforward threshold and proportional coefficient remained unchanged.

[0182] Simulation results: In the three fluctuations, the maximum positive overshoot of 0.32 MPa occurred in the first fluctuation; the maximum negative overshoot of 0.28 MPa occurred in the second fluctuation; the settling time was within 2.5 to 3.5 seconds for both. During the second fluctuation, the compressor surge margin was the lowest at 10.5%, and surge was not triggered. The purge gas discharge was dynamically adjusted according to the pressure change rate, and the cumulative discharge was reduced by approximately 40% compared to the scheme without decoupling compensation. The argon mole fraction in the loop was consistently controlled below 3.0%.

[0183] Example 8

[0184] To further verify the technical advantages of this application compared with the prior art, this embodiment sets up three comparative examples, corresponding to traditional PID control, single threshold feedforward control and non-decoupling compensation control, respectively, and conducts comparative tests on a simulation platform.

[0185] Comparative Example 1 (Traditional PID control, without feedforward)

[0186] This comparative example uses the same loop parameters and feedback PID parameters as Example 7 (Kp=2.5, Ti=30s, Td=5s), but the feedforward controller is removed, relying solely on feedback PID control. Under the same step-up disturbance as in verification condition 1, the feed gas flow rate jumps from 5500 Nm³ / h to 6050 Nm³ / h within 5 seconds, with a peak pressure change rate of 1.2 MPa / s. The PID controller waits for the pressure deviation to accumulate before acting, with a response delay of 6 seconds.

[0187] Simulation results: The pressure in the gas circulation reaction loop increased from 14.2 MPa to a maximum of 15.8 MPa, with an overshoot of 1.6 MPa and a settling time of 18 seconds. The compressor surge margin decreased to 5%, triggering the anti-surge protection (return valve opening), resulting in increased energy consumption. The purge gas discharge was not linked to the pressure, and the mole fraction of inert gas increased to 3.8%.

[0188] Comparative Example 2 (Single threshold feedforward control, without three-level first threshold grading)

[0189] This comparative example uses a single feedforward threshold of 0.5 MPa / s. Feedforward is activated when |dP / dt| ≥ 0.5 MPa / s, but there is no three-level first threshold tiered adjustment (i.e., the feedforward output is a fixed amplitude regardless of the magnitude of dP / dt). Under the continuous fluctuation condition of verification condition three, due to different fluctuation amplitudes, the fixed amplitude feedforward output is too large when dP / dt is small (0.6 MPa / s), leading to over-adjustment and pressure overshoot in the opposite direction; when dP / dt is large (1.8 MPa / s), the output is insufficient, and the overshoot still reaches 0.9 MPa.

[0190] Simulation results: In the third fluctuation, the maximum overshoot was 0.9 MPa, the settling time was 5 to 8 seconds, and the minimum surge margin was 8.5%, which is close to the surge zone.

[0191] Comparative Example 3 (without decoupling compensation control)

[0192] This comparative example, based on the verification condition 2, eliminates decoupling compensation, meaning that it does not actively increase the release of purge gas when the pressure drops sharply.

[0193] Simulation results: The pressure control performance is similar to that of the verification condition 2 (overshoot is 0.27 MPa, settling time is 3.0 seconds), but the molar fraction of argon in the loop increases from the initial 2.5% to 3.5%, the accumulation of inert gas is obvious, and the net ammonia value decreases from 14.2% to 13.6%, a decrease of 0.6 percentage points.

[0194] Comprehensive comparative analysis

[0195] Table 1 below summarizes the key performance indicators of the embodiments of this application and Comparative Examples 1 and 2 under the verification condition.

[0196] Table 1 Performance Comparison under Verification Condition 1

[0197]

[0198] Table 2 below summarizes the overall performance comparison of Comparative Example 2 and Comparative Example 3 under verification condition 3.

[0199] Table 2 Comparison of comprehensive performance under verification condition three

[0200]

[0201] The comparison results above show that, compared with Comparative Example 1, this application reduces the response delay from 6.0 seconds to 0.5 seconds under verification condition 3, a reduction of 92%; the pressure overshoot is reduced from 1.6 MPa to 0.25 MPa, a reduction of 84%; the adjustment time is reduced from 18 seconds to 3.2 seconds, a reduction of 82%; and the compressor surge margin is increased from 5% to 12%, completely avoiding surge protection triggering.

[0202] Compared with Comparative Example 2, this application reduces the maximum overshoot from 0.9MPa to 0.32MPa under continuous fluctuation conditions by 64% through three-level threshold matching; the settling time is shortened from 6.5 seconds to 2.8 seconds, a reduction of 57%.

[0203] Compared with Comparative Example 3, this application, through decoupling compensation, reduces the increase in argon mole fraction after a sudden pressure drop from 1.0 percentage point (2.5%→3.5%) to 0.3 percentage point (2.5%→2.8%), and the decrease in net ammonia value from 0.6 percentage point to less than 0.2 percentage point.

[0204] Based on 8,000 hours of operation per year and an average of 200 fluctuations per year, this application can reduce the risk of compressor blade fatigue damage caused by pressure overshoot by approximately 70%, reduce the ineffective energy consumption of the anti-surge return valve by approximately 15%, save approximately 80,000 kWh of electricity per year, and increase the average ammonia production by approximately 1.5%, demonstrating significant safety and economic benefits. The above comparative results fully demonstrate that the three-level threshold hierarchical control and decoupling compensation strategy based on pressure change rate feedforward proposed in this application has significantly better safety, stability, and economy than existing technologies under wide-load, rapid-fluctuation operating conditions.

[0205] This application also provides an electronic device in its embodiments. (See reference...) Figure 4 The diagram illustrates a structural schematic suitable for implementing the electronic device in the embodiments of this application. The electronic device in the embodiments of this application may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 4 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0206] like Figure 4 As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage device 408 into a random access memory (RAM) 403. When the electronic device is powered on, the RAM 403 also stores various programs and data required for the operation of the electronic device. The processing unit 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0207] Typically, the following devices can be connected to I / O interface 405: input devices 406 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 407 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 408 including, for example, memory cards, hard drives, etc.; and communication devices 409. Communication device 409 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 4 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have instead.

[0208] This application also provides a computer program product including computer-readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the gas circulation reaction control methods based on pressure change rate feedforward provided in this application.

[0209] As an optional application example, in the intelligent transformation project of green ammonia synthesis loop, this computer program product can be packaged into a function block library or a custom algorithm module adapted to mainstream DCS systems.

[0210] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any of the gas circulation reaction control methods based on pressure change rate feedforward provided in this application.

[0211] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0212] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0213] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product.

[0214] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

Claims

1. A gas circulation reaction control method based on pressure change rate feedforward, characterized in that, include: Real-time pressure data of the gas circulation reaction loop is acquired, and the pressure change rate is calculated based on the real-time pressure data; the gas circulation reaction loop is composed of at least a pressure regulating mechanism, a reaction tower, a cooling separation unit, and a gas emission mechanism connected in a closed loop through process pipelines; In response to the absolute value of the pressure change rate satisfying a preset trigger condition, the target opening adjustment amount of the pressure regulating mechanism is determined according to the numerical range in which the pressure change rate is located. A feedforward control command is generated based on the target opening adjustment amount of the pressure regulating mechanism. In response to the negative decrease in the pressure change rate satisfying a preset sudden drop condition, a decoupling compensation command is generated. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission. The feedforward control command is output to the pressure regulating mechanism, and the decoupling compensation command is output to the gas emission mechanism.

2. The gas circulation reaction control method based on pressure change rate feedforward according to claim 1, characterized in that, Determining the target opening adjustment amount of the pressure regulating mechanism based on the numerical range of the pressure change rate includes: The absolute value of the pressure change rate is compared with a plurality of incremental first thresholds to determine the target numerical range in which the pressure change rate falls; From the preset mapping relationship between numerical ranges and opening adjustment amounts, the target opening adjustment amount corresponding to the target numerical range is found, wherein the opening adjustment amount of the pressure regulating mechanism increases as the numerical range increases.

3. The gas circulation reaction control method based on pressure change rate feedforward according to claim 2, characterized in that, The generation of feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism includes: Based on formula U ff =A×K ff ×sign(dP / dt) calculates the feedforward control quantity, U ff Let A be the feedforward control variable, and K be the target opening adjustment variable. ff The preset feedforward proportional coefficient is used, and sign(dP / dt) is the sign function of the pressure change rate; Generate the feedforward control command that includes the feedforward control quantity.

4. The gas circulation reaction control method based on pressure change rate feedforward according to claim 1, characterized in that, The generated decoupling compensation instructions include: Based on the absolute value of the pressure change rate, a decoupling compensation amount is determined, wherein the decoupling compensation amount is positively correlated with the absolute value of the pressure change rate. Generate the decoupling compensation instruction containing the decoupling compensation amount.

5. The gas circulation reaction control method based on pressure change rate feedforward according to claim 4, characterized in that, Determining the decoupling compensation amount based on the absolute value of the pressure change rate includes: Based on formula U decouple =C×|dP / dt|×K decouple The decoupling compensation amount is calculated, where U decouple The decoupling compensation amount is given by C, which is a preset constant, |dP / dt| is the absolute value of the pressure change rate, and K is the value of K. decouple This is the preset decoupling ratio coefficient.

6. The gas circulation reaction control method based on pressure change rate feedforward according to any one of claims 1 to 5, characterized in that, Also includes: Obtain the pressure setpoint of the gas circulation reaction loop, and calculate the pressure deviation between the pressure setpoint and the real-time pressure data; Based on the pressure deviation, a feedback control command is generated by the feedback controller; The feedforward control command and the feedback control command are fused together to obtain a composite control command.

7. The gas circulation reaction control method based on pressure change rate feedforward according to claim 6, characterized in that, The step of outputting the feedforward control command to the pressure regulating mechanism includes: The composite control command is output to the pressure regulating mechanism.

8. A gas circulation reaction control device based on pressure change rate feedforward, characterized in that, include: The first acquisition module is used to acquire real-time pressure data of the gas circulation reaction loop and calculate the pressure change rate based on the real-time pressure data; the gas circulation reaction loop is composed of at least a pressure regulating mechanism, a reaction tower, a cooling separation unit and a gas emission mechanism connected in a closed manner through process pipelines; The first determining module is used to determine the target opening adjustment amount of the pressure regulating mechanism according to the numerical range of the pressure change rate in response to the absolute value of the pressure change rate satisfying a preset trigger condition. The first generation module is used to generate feedforward control commands based on the target opening adjustment amount of the pressure regulating mechanism; The second generation module is used to generate a decoupling compensation command in response to the negative decrease in the pressure change rate satisfying a preset sudden drop condition. The decoupling compensation command is used to control the gas emission mechanism to increase the gas emission. The output module is used to output the feedforward control command to the pressure regulating mechanism and the decoupling compensation command to the gas emission mechanism.

9. A computer program product, characterized in that, Includes computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the gas circulation reaction control method based on pressure change rate feedforward as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program to enable the electronic device to implement the gas circulation reaction control method based on pressure change rate feedforward as described in any one of claims 1 to 7.

11. A computer storage medium, characterized in that, The storage medium carries one or more computer programs that, when executed by an electronic device, enable the electronic device to implement the gas circulation reaction control method based on pressure change rate feedforward as described in any one of claims 1 to 7.

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