Biphase carbon dioxide dynamic regulation and control system and wide load linkage control method thereof

Abstract

The invention relates to the technical field of carbon capture, utilization and storage, and discloses a double-phase-state carbon dioxide dynamic regulation and control system and a wide-load linkage control method thereof.The system comprises a carbon dioxide capture device, a double-phase-state carbon dioxide user side and a double-phase-state dynamic regulation and control device connected between the carbon dioxide capture device and the double-phase-state carbon dioxide user side and used for double-phase-state conversion of carbon dioxide; the carbon dioxide trapping device, the double-phase carbon dioxide user side and the double-phase dynamic regulation and control device are jointly connected with a carbon dioxide trapping and liquefying joint control subsystem and a wide-load double-phase carbon dioxide dynamic regulation and control subsystem; the carbon dioxide trapping device, the carbon dioxide trapping steam liquefaction joint control subsystem and the wide-load double-phase carbon dioxide dynamic regulation and control subsystem are jointly connected with a central control system of an integrated intelligent algorithm model. According to the invention, carbon capture and transportation can dynamically match wide load and two-phase demands, long-period continuous stable operation is ensured, and the method is suitable for scenes with large fluctuation range of carbon dioxide absorption load of a user side and gas and liquid two-phase demands.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon capture, utilization and storage, and in particular to a two-phase carbon dioxide dynamic regulation system and a wide-load linkage control method thereof. Background Art

[0002] A carbon capture system is a technology used to capture carbon dioxide released during industrial processes. It separates CO2 from exhaust gases through chemical absorption, physical adsorption, or membrane separation, reducing greenhouse gas emissions. The captured CO2 is then transported in different phases to target users for industrial use, contributing to climate change mitigation. Safe and reliable transportation technology is crucial for ensuring efficient and safe long-distance transport.

[0003] In the current application process, traditional carbon capture and transportation systems have the following bottlenecks:

[0004] (1) Conventional carbon capture technology has significant limitations in dealing with user-side load fluctuations and phase changes. It usually operates according to the design load and is difficult to adapt to large fluctuations in the user-side carbon dioxide absorption load (for example, 0-180% of the design capture capacity). Carbon dioxide transportation usually operates at a fixed load, and the captured carbon dioxide is transported to the user-side in a single phase (liquid or gaseous), which is difficult to meet the dual-phase requirements of the user-side.

[0005] (2) Traditional carbon capture technology cannot effectively achieve dynamic matching and regulation. Existing liquefaction and gasification equipment mostly operate independently and lack a dynamic linkage mechanism, resulting in low energy efficiency, frequent equipment start-up and shutdown, and poor operating stability.

[0006] (3) When user demand changes, the carbon capture device cannot adjust the capture rate and phase distribution in real time, which can easily cause resource waste or supply interruption, resulting in low carbon capture efficiency or unstable operation. Summary of the Invention

[0007] The present invention aims to provide a two-phase carbon dioxide dynamic regulation system and a wide-load linkage control method thereof. Carbon capture and transportation can dynamically match wide-load and two-phase demands, ensuring long-term continuous and stable operation. It is particularly suitable for scenarios where the user-side carbon dioxide absorption load fluctuates greatly and there is a gas-liquid two-phase demand.

[0008] The basic solution provided by the present invention is: a two-phase carbon dioxide dynamic control system, including a carbon dioxide capture device and a two-phase carbon dioxide user terminal, and also including a two-phase dynamic control device connected between the carbon dioxide capture device and the two-phase carbon dioxide user terminal, for performing two-phase conversion of carbon dioxide under control;

[0009] The carbon dioxide capture device, the two-phase carbon dioxide user terminal and the two-phase dynamic control device are commonly connected to a carbon dioxide capture steam liquefaction joint control subsystem and a wide-load two-phase carbon dioxide dynamic control subsystem;

[0010] The carbon dioxide capture device, the carbon dioxide capture steam liquefaction joint control subsystem and the wide load two-phase carbon dioxide dynamic control subsystem are jointly connected to a central control system with an integrated intelligent algorithm model.

[0011] The present invention is based on a two-phase carbon dioxide dynamic control system and also provides a wide load linkage control method for the two-phase carbon dioxide dynamic control system, the method comprising:

[0012] The captured gaseous carbon dioxide is transported to the dual-phase carbon dioxide user end through the dual-phase dynamic control device; the transportation method includes at least one of gas phase transportation, liquid phase transportation, liquid phase gas phase transportation and gas phase liquid phase transportation;

[0013] During the transportation process, the basic data of the two-phase carbon dioxide user terminal is uploaded to the wide-load two-phase carbon dioxide dynamic control subsystem for analysis and processing, and the carbon dioxide capture steam liquefaction joint control subsystem is used to dynamically adjust the operating status and / or transportation mode of the carbon dioxide capture device and the two-phase dynamic control device;

[0014] The data representing the operating status of the devices and subsystems belonging to the two-phase carbon dioxide dynamic control system are uploaded to the central control system integrated with the intelligent algorithm model for analysis and processing, so as to predict the operating trends of the devices and subsystems belonging to the system, optimize and adjust the operating status of the corresponding devices and subsystems, and issue corresponding warnings.

[0015] The working principle and advantages of the present invention are:

[0016] This paper takes a certain carbon capture and continuous transportation full-process equipment as the research object, and proposes a two-phase carbon dioxide dynamic control system and a wide-load linkage control method thereof, which realizes the stable output of a wide load at the user end (0-180% of the designed capture capacity), as well as the linkage control of the dynamic wide-load demand of gaseous and liquid carbon dioxide and the carbon capture device. The system has achieved long-term continuous operation for more than 24 months, and has achieved beneficial practical application effects.

[0017] The present invention breaks through the limitations of traditional carbon capture technology, takes the two-phase carbon dioxide capture process as the research object, adds a two-phase dynamic control device between the capture device and the two-phase user end and realizes joint control, which can capture two-phase carbon dioxide at the same time and realize on-demand supply of gas-liquid two-phase, which can be supplied independently or complementary to meet the needs of different industrial scenarios.

[0018] The present invention uses multi-level control and AI intelligent optimization to achieve dynamic matching between the capture device and the user-end load, and adapt to a wide range of fluctuations of 0-180%. The designed linkage control system and AI model calculation can be based on the real-time collected user-end basic data, such as demand information including time, real-time usage, temperature, pressure, etc., to efficiently and quickly adjust the carbon dioxide capture output, reasonably allocate the supply of two-phase carbon dioxide, and build a regional data operation prediction model based on basic data. In the future operation, reasonable recommended operating parameters are proposed to accurately and dynamically adjust the operating status and delivery mode of each device and subsystem to match the real-time needs of the user end.

[0019] The present invention avoids the negative impacts of manual operation lags and logic judgment deviations during the operation of the carbon capture device. It utilizes a central control system with integrated intelligent algorithms to collect and analyze basic data representing the global operating status, predict system operating trends, intelligently adjust the operating status, dynamically adjust the capture and transportation systems, propose optimal control operations, and simultaneously issue early warning information to prompt manual intervention, thereby ensuring continuous, stable, and efficient operation of the plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a dual-phase carbon dioxide dynamic control system provided by an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the process of the wide load linkage control method of the dual-phase carbon dioxide dynamic control system provided by the embodiment of the present invention Figure 1 ;

[0022] Figure 3 Schematic diagram of the process of the wide load linkage control method of the dual-phase carbon dioxide dynamic control system provided by the embodiment of the present invention Figure 2 . DETAILED DESCRIPTION

[0023] The following is a further detailed description through specific implementation methods:

[0024] The embodiment is basically as shown in the attached Figure 1 Shown: A two-phase carbon dioxide dynamic control system, including a carbon dioxide capture device and a two-phase carbon dioxide user terminal;

[0025] It also includes a two-phase dynamic control device connected between the carbon dioxide capture device and the two-phase carbon dioxide user end (each device constitutes a primary control unit); the two-phase dynamic control device is used to perform two-phase conversion of carbon dioxide under control;

[0026] The carbon dioxide capture device, the two-phase carbon dioxide user terminal and the two-phase dynamic control device are commonly connected to the carbon dioxide capture steam liquefaction joint control subsystem and the wide-load two-phase carbon dioxide dynamic control subsystem (each subsystem constitutes a secondary control unit, which can be understood as a regional control unit);

[0027] The carbon dioxide capture device, the carbon dioxide capture steam liquefaction joint control subsystem and the wide load two-phase carbon dioxide dynamic control subsystem are commonly connected to a central control system with an integrated intelligent algorithm model (the central control system constitutes a three-level control unit).

[0028] It can be understood that primary control involves logical control of individual underlying devices, with each independent device implementing its own basic operating logic. This involves the CO2 capture unit, the two-phase CO2 user terminal, and the two-phase dynamic control unit. Secondary control involves system linkage control, regional data analysis, and control systems, responsible for coordination between various devices and subsystems, as well as regional data processing and analysis. This involves the CO2 capture steam-to-liquefaction integrated control subsystem and the wide-load two-phase CO2 dynamic control subsystem. Third-level control, currently the highest control level, provides coordinated management and intelligent control of all primary devices and secondary subsystems. This involves a central control system integrated with intelligent algorithm modules.

[0029] Specifically:

[0030] The input end of the CO2 capture device is connected to the output port of the power plant chimney, and the CO2 absorption and CO2 desorption processes are completed in the CO2 capture device. Among them: (1) CO2 absorption: The CO2 emitted from the flue gas of the coal-fired power plant is absorbed by a low-temperature organic amine solvent; (2) CO2 desorption: The organic amine solvent is heated to decompose the CO2 from the solvent to obtain a certain purity of CO2 (gas phase).

[0031] A two-phase carbon dioxide user terminal includes a gaseous carbon dioxide user terminal and a liquid carbon dioxide user terminal.

[0032] The two-phase dynamic control device receives the carbon dioxide (gaseous phase) analyzed from the carbon dioxide capture device, and outputs the gaseous carbon dioxide to the gaseous carbon dioxide user end and the liquid carbon dioxide to the liquid carbon dioxide user end under control. Specifically, the two-phase dynamic control device includes a carbon dioxide liquefaction device and a carbon dioxide vaporization device, and is equipped with independent gas and liquid phase regulating valve groups to support liquid carbon dioxide storage and rapid conversion of gaseous carbon dioxide, and can independently transport the two-phase carbon dioxide state, or transport them complementarily. The two-phase dynamic control device is also connected to an air source and a steam source, which are used as heat sources to vaporize the liquid carbon dioxide under different conditions and controls to meet the needs of the user end.

[0033] Build a distributed phase detection network, deploy corresponding flow, pressure, temperature and phase sensors and other low-level high-precision measuring elements in the carbon dioxide capture device, two-phase carbon dioxide user terminal, and two-phase dynamic control device (i.e., the bottom layer of the control unit), conduct dynamic monitoring of each low-level equipment, and collect and upload basic data representing the operating status of the corresponding equipment in real time, such as various monitoring signals, for analysis and processing by the upper-level system.

[0034] Within the two-level control architecture, the CO2 capture and liquefaction control subsystem and the wide-load dual-phase CO2 dynamic control subsystem enable coordinated operation between different units and transmission links. Based on regional data analysis, these components coordinate their operations. For example, the operating parameters of the CO2 capture unit and dual-phase dynamic control unit are adjusted based on CO2 output and user demand.

[0035] Specifically, the CO2 capture and liquefaction integrated control subsystem includes a CO2 capture integrated control system, a CO2 liquefaction integrated control system, and a CO2 vaporization integrated control system. The CO2 capture unit is controlled by the CO2 capture integrated control system, and the capture capacity can be adjusted by adjusting the CO2 capture unit's operating load and absorbent circulation flow rate. The dual-phase dynamic control unit includes a CO2 liquefaction unit and a CO2 vaporization unit, respectively controlled by the CO2 liquefaction integrated control system and the CO2 vaporization integrated control system. The liquefaction and vaporization capacities can be adjusted by adjusting the compression and refrigeration operating loads, the liquefaction / vaporization ratio and delivery rate, and the phase switching load threshold.

[0036] The carbon dioxide capture gas liquefaction joint control subsystem can be understood as a regional intelligent linkage control unit. Based on the load fluctuation data in the user-side basic data, it dynamically adjusts the operating load of the capture device, the liquefaction / gasification ratio and the delivery rate of the two-phase dynamic control device through the fuzzy PID algorithm.

[0037] The wide-load two-phase carbon dioxide dynamic control subsystem acts on the gas and liquid phase user ends. Through the two-phase carbon dioxide dynamic control system, a capture capacity-transmission capacity feedback model is established. When user demand exceeds the capture capacity, corresponding instructions are issued to the carbon dioxide capture gas liquefaction linkage control system, and the carbon dioxide capture gas liquefaction linkage control system drives the capture device, liquefaction device and vaporization device to operate, such as calling the stored liquid phase or increasing the gas phase carbon dioxide capture load to supplement the supply. Otherwise, the capture load is reduced or the redundant carbon dioxide is liquefied and stored.

[0038] The carbon dioxide capture steam liquefaction linkage control system and the wide-load two-phase carbon dioxide dynamic control subsystem support parallel operation to achieve seamless switching between carbon dioxide gas and liquid.

[0039] In the three-level control architecture, the central control system combines AI intelligent control with comprehensive analysis and decision-making based on data from the entire system. By collecting data from the primary and secondary control feedback and applying AI algorithms for optimization, it achieves intelligent and efficient regulation of the entire carbon dioxide capture, processing, and distribution system. It dynamically regulates the linkage control system, rationally plans the operating ranges of each linkage control system, analyzes the operating status of the linkage system, predicts the operating trends of the linkage system, prevents over-range adjustments in large ranges, and improves the overall performance and responsiveness of the system. In other words, the central control system mainly balances the secondary control system and dynamically regulates the tertiary control system within the reasonable operating range of the secondary system.

[0040] Specifically, the integration of the central control system and the AI intelligent algorithm module is used to collect and analyze data representing the global operating status, predict the system operation trend, and further perform intelligent adjustments based on the control of the secondary control unit. It dynamically adjusts the capture and conveying system and issues early warning information to prompt manual intervention. For example, a regional data operation prediction model can be constructed based on relevant information used by the user end (such as regional electricity consumption, CO2 inventory, number of staff, and other basic data). This model can then propose reasonable recommended operating parameters for future operations. Through analysis and calculation, it can also propose optimized control operations to ensure continuous, stable, and efficient operation of the plant. By constructing a regional data operation prediction model, the capture rate of the carbon dioxide capture device and the phase output of the two-phase dynamic control device can be dynamically optimized based on historical user-end data (a database model) and real-time load forecasts (a load forecast model using an LSTM neural network can be used). Supply and demand balance can be ensured by adjusting the absorbent circulation flow, compression, refrigeration operating load, and phase switching load threshold. Dynamically optimizing the capture rate of the carbon dioxide capture device means adjusting the amount of carbon dioxide captured. Dynamically optimizing the phase output of the two-phase dynamic control device means adjusting the ratio of the liquefied and vaporized amounts of carbon dioxide and the delivery rate by controlling the operating modes of the carbon dioxide liquefaction device and vaporization device.

[0041] like Figure 2 As shown, during use, the above system provides a wide load linkage control method for a two-phase carbon dioxide dynamic control system, the method comprising:

[0042] The captured gaseous carbon dioxide is transported to the dual-phase carbon dioxide user end through the dual-phase dynamic control device; the transportation method includes at least one of gas phase transportation, liquid phase transportation, liquid phase gas phase transportation and gas phase liquid phase transportation;

[0043] During the transportation process, the basic data of the two-phase carbon dioxide user terminal is uploaded to the wide-load two-phase carbon dioxide dynamic control subsystem for analysis and processing, and the carbon dioxide capture steam liquefaction joint control subsystem is used to dynamically adjust the operating status and / or transportation mode of the carbon dioxide capture device and the two-phase dynamic control device;

[0044] The data representing the operating status of the devices and subsystems belonging to the two-phase carbon dioxide dynamic control system are uploaded to the central control system integrated with the intelligent algorithm model for analysis and processing, so as to predict the operating trends of the devices and subsystems belonging to the system, optimize and adjust the operating status of the corresponding devices and subsystems, and issue corresponding warnings.

[0045] Specifically:

[0046] Capture stage: The absorbent absorbs carbon dioxide in the flue gas in the absorption tower, releases carbon dioxide (gas phase) after desorption through the regeneration tower, and then enters the two-phase carbon dioxide dynamic control system.

[0047] Two-phase regulation: the desorbed carbon dioxide is directly delivered to gas-phase users, or the desorbed carbon dioxide is compressed, refrigerated, liquefied, stored, and delivered to liquid-phase carbon dioxide users. The liquid carbon dioxide is converted into gas-phase carbon dioxide through the two-phase carbon dioxide dynamic regulation system and then supplemented and delivered to the gas-phase user end.

[0048] Gas-phase transport: Through the underlying primary control program, relevant information and data used by gaseous CO2 users (such as temperature, pressure, flow rate, and purity) are uploaded to the secondary control layer. Through comprehensive model analysis and calculation, the secondary control layer determines the optimal operating parameters for the system's devices.

[0049] Liquid-Phase Transport: Through the underlying primary control program, relevant information and data (temperature, pressure, flow rate, purity, etc.) used by the liquid CO2 user end is uploaded to the secondary control layer. Through comprehensive model analysis and calculation, the secondary control layer determines the optimal operating parameters for the system's devices.

[0050] Liquid phase supplements gas phase: Through the bottom-level control program, the relevant information and data (temperature, pressure, flow rate and purity, etc.) used by the gas-phase carbon dioxide user end are uploaded to the secondary control layer. The secondary control layer uses comprehensive model analysis and calculation to provide the optimal operating parameters for the operating status of the system's devices. The two-phase carbon dioxide user end is the gas-phase carbon dioxide user end. The gas-phase carbon dioxide supply is delivered after two-phase regulation. When the load of the gas-phase carbon dioxide user end changes, the wide-load two-phase carbon dioxide dynamic control subsystem is used to analyze the load change range to determine the gas-phase carbon dioxide supply strategy, and the carbon dioxide capture gas liquefaction joint control subsystem is used to make corresponding adjustments.

[0051] Gas phase replenishment of liquid phase: Through the bottom-level control program, the relevant information and data (temperature, pressure, flow rate and purity, etc.) used by the gas phase carbon dioxide user end are uploaded to the secondary control layer. The secondary control layer provides the optimal operating parameters for the operating status of the system's devices through comprehensive model analysis and calculation. The two-phase carbon dioxide user end is the liquid phase carbon dioxide user end. The liquid phase carbon dioxide supply is delivered after two-phase regulation. When the load of the liquid phase carbon dioxide user end changes, the wide load two-phase carbon dioxide dynamic control subsystem is used to analyze the load change range to determine the liquid phase carbon dioxide supply strategy, and the carbon dioxide capture gas liquefaction joint control subsystem is used to make corresponding adjustments.

[0052] During the liquid-phase replenishment of the gas-phase and gas-phase replenishment of the liquid-phase, the gas-phase or liquid-phase carbon dioxide supply strategy includes at least one of adjusting the capture volume through the carbon dioxide capture device to meet the gas-phase or liquid-phase change requirements, and adjusting the vaporization volume or liquefaction volume through the dual-phase dynamic control device to meet the gas-phase or liquid-phase change requirements. For example, if the change is within a preset range, the capture volume is adjusted by the carbon dioxide capture device to meet the gas-phase or liquid-phase change requirements. If the change is outside the preset range, the dual-phase dynamic control device is used to adjust the operating parameters representing the liquefaction volume / vaporization volume ratio to increase the gas-phase or liquid-phase carbon dioxide supply to meet the gas-phase or liquid-phase change requirements.

[0053] In addition, when the user end is a gas phase user end, the vaporization amount is adjusted through a two-phase dynamic control device to meet the gas phase change requirements, and different heat sources are selected for vaporization operations based on different load change ranges.

[0054] During the transmission process, if the basic data of the two-phase carbon dioxide user end indicates a short-term fluctuation in the user end load, no dynamic adjustment will be made and the current operating state will be maintained; or if the short-term load change at the user end exceeds a preset threshold (for example, 30%), no dynamic adjustment will be made. At the same time, the central control system based on the integrated intelligent algorithm model will issue an alarm and provide guidance on operating methods.

[0055] Fault tolerance: The CO2 capture and liquefaction joint control subsystem and the wide-load two-phase CO2 dynamic control subsystem (i.e., the secondary control system) monitor the status of regional equipment and automatically switch protection functions in the event of an abnormality to ensure continuous operation.

[0056] Dynamic matching, the integration of the central control system and AI intelligent algorithm modules, is used to collect and analyze data representing the global operating status, predict system operating trends, and further perform intelligent adjustments based on the control of the secondary control unit. It dynamically adjusts the capture and conveying systems and issues early warning information to prompt manual intervention.

[0057] Taking the gas phase supply control of a 10 ton / hour carbon capture and continuous transportation full process equipment as an example, its process control diagram is as follows Figure 3As shown:

[0058] Monitor the load of gas-phase users, i.e. collect relevant information and data on their carbon dioxide usage (such as temperature, pressure, flow, humidity, purity, etc.):

[0059] (1) A disturbance in the user-side load (similar to a pulse signal) does not mean that the user-side load has changed. Through user-side load-related data (regional power consumption, number of staff, etc.) and a large database model, AI-based intelligent analysis of user-side load fluctuations will be used. The system will not trigger the execution program and maintain current normal operation;

[0060] (2) When the user-side load changes (design load 0-90%), the user-side load is confirmed to be lower than the design load through the relevant load data of the user side (regional power consumption, number of staff, etc.) and the database large model, which means that the output of the carbon capture system is greater than the user-side demand, triggering the carbon dioxide liquefaction linkage start-up control system to drive the carbon dioxide liquefaction device (i.e., the carbon dioxide refrigeration system) to start. After the operation is stable, the liquefaction valve opening of the carbon dioxide liquefaction device is accurately controlled to reasonably allocate the carbon dioxide liquefaction amount and the gas phase demand of the user side.

[0061] (3) The user-side load changes (design load 0-90% to design load 90-110%). The user-side load data (regional power consumption, number of staff, etc.) and the database model confirm that the user-side load is equal to the design load, which means that the carbon capture system output can meet the user-side demand. AI intelligent analysis triggers the carbon dioxide liquefaction linkage stop control system. After the program is executed, the system maintains normal operation.

[0062] The user-side load changes (from 90-110% of the design load to 0-90% of the design load). Through the relevant load data of the user side (regional power consumption, number of staff, etc.) and the database large model, it is confirmed that the user-side load has decreased, which means that the output of the carbon capture system is greater than the user-side demand. AI intelligent analysis triggers the carbon dioxide liquefaction linkage start-up control system. After the program is executed, the system maintains normal operation.

[0063] (4) The user-side load changes (from 90-110% of the design load to 110-120% of the design load). The user-side load is confirmed to be greater than the design load through the relevant load data of the user-side (regional power consumption, number of staff, etc.) and the database large model. However, the user-side gas phase demand can still be met by increasing the output of the carbon capture system (the maximum operating load of the carbon capture system is designed to be 1.2 times the design load), triggering the linkage start-up control system of the carbon dioxide capture system to increase the operating load of the carbon dioxide capture system, including increasing the fan air volume, absorbent circulation volume and steam volume.

[0064] The user-side load changes (from 110-120% of the design load to 90-110% of the design load). The reduction in the user-side load is confirmed through relevant user-side load data (regional power consumption, number of staff, etc.) and the data big model. The gas phase demand of the user-side can be met by reducing the output of the carbon capture system, triggering the linkage stop control system of the carbon dioxide capture system, and reducing the operating load of the carbon dioxide capture system, including increasing the fan air volume, absorbent circulation volume and steam volume.

[0065] (5) The user-side load changes (from 110-120% of the design load to 120-180% of the design load). Through the relevant data of the user side (regional power consumption, number of staff, etc.) and the data model, it is confirmed that the user-side load is greater than the design load. Even by increasing the output of the carbon capture system (the maximum operating load of the carbon capture system is designed according to 1.2 times the design load), it is difficult to meet the user-side demand. The carbon dioxide vaporization linkage control system is triggered to vaporize the liquid carbon dioxide to increase the supply of gaseous carbon dioxide to meet the gaseous demand of the user side. 1) The load meets 120-130% of the design load, and the air source is used as the heat source to vaporize the liquid carbon dioxide to meet the user-side demand; 2) The load meets 130-180% of the design load, and the steam heat source is used as the heat source to vaporize the liquid carbon dioxide to meet the user-side demand;

[0066] When the user-side load changes (from 120-180% of the design load to 110-120% of the design load), the user-side load reduction is confirmed through relevant user-side data (regional power consumption, number of staff, etc.) and the data big model, triggering the carbon dioxide vaporization linkage stop control system. At the same time, the gas phase demand of the user-side is met by increasing the output of the carbon capture system.

[0067] (6) When the user-side load changes (design load 120-180% to greater than 180%), AI analysis indicates that the system is in an abnormal operating state. Through intelligent analysis of basic data, it is determined whether a failure has occurred in the system or the actual user-side load is greater than 180% of the design load, and an operation guidance process is issued.

[0068] (7) When the load on the user side changes by more than 30% in a short period of time, the AI analysis system operates across a large range and issues an alarm message without triggering the execution program, and guides the operator to perform the correct operation.

[0069] Through long-term stable operation comparison, the implementation of this technology has reduced the operating volume by 30%, saved energy consumption by 7%, and improved safety and operational reliability.

[0070] In the above example, the user end is a gas phase user end, and the adjustment steps are also applicable to the liquid phase user end. If the user end is a liquid phase user end, the above steps can be adjusted accordingly according to the aforementioned gas phase or liquid phase carbon dioxide supply strategy to achieve the corresponding increase or decrease in liquid amount.

[0071] This embodiment provides a dual-phase carbon dioxide dynamic control system and a wide-load linkage control method thereof. Carbon capture and transportation can dynamically match wide-load and dual-phase demands. Gas-liquid dual-phase is supplied on demand, either independently or in a complementary manner, to meet the needs of different industrial scenarios. Through multi-level control and AI intelligent optimization, dynamic matching between the capture device and user-end load is achieved, adapting to a wide range of fluctuations from 0-180%. The negative impacts of manual operation lags and logical judgment biases during carbon capture device operation are avoided. The underlying sensors provide basic data, and the central control system proposes optimized control operations based on this basic data through analysis and calculation, ensuring continuous, stable, and efficient factory operation. This significantly improves system operational stability and supports long-term continuous operation.

[0072] The above is only an embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the guidance of this application. Some typical well-known structures or well-known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A two-phase carbon dioxide dynamic control system, comprising a carbon dioxide capture device and a two-phase carbon dioxide user terminal, characterized in that: It also includes a two-phase dynamic control device connected between the carbon dioxide capture device and the two-phase carbon dioxide user end, which is used to perform two-phase conversion of carbon dioxide under control; The carbon dioxide capture device, the two-phase carbon dioxide user terminal and the two-phase dynamic control device are commonly connected to a carbon dioxide capture steam liquefaction joint control subsystem and a wide-load two-phase carbon dioxide dynamic control subsystem; The carbon dioxide capture device, the carbon dioxide capture steam liquefaction joint control subsystem and the wide load two-phase carbon dioxide dynamic control subsystem are jointly connected to a central control system with an integrated intelligent algorithm model.

2. The dual-phase carbon dioxide dynamic control system according to claim 1, characterized in that: The two-phase dynamic control device includes a carbon dioxide liquefaction device and a carbon dioxide vaporization device; the two-phase dynamic control device is also connected to an air source and a steam source.

3. The dual-phase carbon dioxide dynamic control system according to claim 2, characterized in that: The carbon dioxide capture and liquefaction integrated control subsystem includes the carbon dioxide capture integrated control system, the carbon dioxide liquefaction integrated control system and the carbon dioxide vaporization integrated control system; the carbon dioxide capture device is controlled by the carbon dioxide capture integrated control system, the carbon dioxide liquefaction device is controlled by the carbon dioxide liquefaction integrated control system, and the carbon dioxide vaporization device is controlled by the carbon dioxide vaporization integrated control system.

4. The dual-phase carbon dioxide dynamic control system according to claim 1, characterized in that: Build a distributed phase detection network, deploy underlying measurement elements in carbon dioxide capture devices, two-phase carbon dioxide user terminals, and two-phase dynamic control devices, and collect and upload basic data representing the operating status of the corresponding equipment in real time.

5. A wide load linkage control method for a dual-phase carbon dioxide dynamic control system, characterized in that: The method of applying the dual-phase carbon dioxide dynamic control system according to any one of claims 1 to 4 comprises: The captured gaseous carbon dioxide is transported to the dual-phase carbon dioxide user end through the dual-phase dynamic control device; the transportation method includes at least one of gas phase transportation, liquid phase transportation, liquid phase gas phase transportation and gas phase liquid phase transportation; During the transportation process, the basic data of the two-phase carbon dioxide user terminal is uploaded to the wide-load two-phase carbon dioxide dynamic control subsystem for analysis and processing, and the carbon dioxide capture steam liquefaction joint control subsystem is used to dynamically adjust the operating status and / or transportation mode of the carbon dioxide capture device and the two-phase dynamic control device; The data representing the operating status of the devices and subsystems belonging to the two-phase carbon dioxide dynamic control system are uploaded to the central control system integrated with the intelligent algorithm model for analysis and processing, so as to predict the operating trends of the devices and subsystems belonging to the system, optimize and adjust the operating status of the corresponding devices and subsystems, and issue corresponding warnings.

6. The wide load linkage control method of the dual-phase carbon dioxide dynamic regulation system according to claim 5, characterized in that: The wide-load two-phase carbon dioxide dynamic control subsystem is used to analyze the load variation range at the user end to determine the gas or liquid carbon dioxide supply strategy, and corresponding adjustments are made through the carbon dioxide capture gas liquefaction joint control subsystem.

7. The wide load linkage control method of the dual-phase carbon dioxide dynamic regulation system according to claim 6, characterized in that: The gaseous or liquid carbon dioxide supply strategy includes adjusting the capture amount through a carbon dioxide capture device to meet the gaseous or liquid phase change requirements, and adjusting the vaporization amount or liquefaction amount through a two-phase dynamic control device to meet at least one of the gaseous or liquid phase change requirements.

8. The wide load linkage control method of the dual-phase carbon dioxide dynamic regulation system according to claim 7, characterized in that: The vaporization amount is adjusted through a two-phase dynamic control device to meet the gas phase change requirements, and different heat sources are selected for vaporization operations based on different load change ranges.

9. The wide load linkage control method of the dual-phase carbon dioxide dynamic regulation system according to claim 5, characterized in that: During the transmission process, if the basic data of the two-phase carbon dioxide user end indicates a short-term fluctuation in the user end load, no dynamic adjustment will be made and the current operating state will be maintained; or if the short-term load change at the user end exceeds the preset threshold, no dynamic adjustment will be made. At the same time, the central control system based on the integrated intelligent algorithm model will issue an alarm and provide guidance on operating methods.

10. The wide load linkage control method of the dual-phase carbon dioxide dynamic regulation system according to claim 5, characterized in that: Gas phase transportation is to directly transport the captured gas phase carbon dioxide to the gas phase carbon dioxide user end; Liquid phase transportation is to compress the captured gaseous carbon dioxide, refrigerate it, liquefy it, store it, and then transport it to the liquid phase carbon dioxide user end; Liquid-phase gas-phase transport involves adjusting the capture volume through a carbon dioxide capture device to meet the gas phase change requirements, or adjusting the operating parameters representing the liquefaction / vaporization ratio through a two-phase dynamic control device to increase the gas phase carbon dioxide supply to meet the gas phase change requirements; The gas phase liquid replenishment phase is to adjust the capture amount through the carbon dioxide capture device, or adjust the operating parameters characterizing the liquefaction / vaporization ratio through the two-phase dynamic control device to increase the liquid phase carbon dioxide supply to meet the liquid phase change requirements.

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