Offshore sandstone CCUS technology optimization method and system and computer equipment

Abstract

The invention relates to the technical field of CCUS, and discloses an offshore sandstone CCUS technology optimization method and system and computer equipment. The offshore sandstone CCUS technology optimization method comprises the steps that an offshore area with a sandstone layer is obtained, an offshore platform is established, and direct air capture equipment is arranged on the offshore platform; a novel amine-containing absorbent is adopted to absorb carbon dioxide in the air which is directly absorbed by the air capturing equipment; the absorption tower adopts a composite material and a coating structure; fluid dynamics simulation software is adopted to calculate air flow and liquid flow in the carbon capture process, simulation data are analyzed, and fluid distribution in the tower and the tower body structure are optimized; conveying the extracted carbon dioxide to a geologic structure under a seabed of a storage place through a pipeline for sealing and storing; and evaluating the potential influence on the marine ecosystem by adopting an ecological model and environment simulation software, and generating an influence report. The carbon dioxide capturing and storing efficiency and safety can be improved, and meanwhile the influence on the environment is minimized.

Description

Technical Field

[0001] The present invention relates to the field of CCUS technology, and in particular to an offshore sandstone CCUS technology optimization method, system and computer equipment. Background Art

[0002] As the global climate change problem becomes increasingly serious, carbon dioxide capture, utilization and storage (CCUS) technology is considered to be one of the effective means to reduce greenhouse gas emissions in the atmosphere. Especially today when fossil fuels still dominate global energy consumption, the development and optimization of CCUS technology is particularly important. Due to its unique geological characteristics, offshore sandstone formations have become a potential site for storing carbon dioxide, but they also face many technical challenges and environmental risks.

[0003] Traditional offshore sandstone CCUS technology mainly includes several key steps: capture, transportation, injection and long-term storage of carbon dioxide. In this process, how to efficiently and safely inject the captured carbon dioxide into the seabed sandstone layer to ensure its stability and environmental safety is the focus of technical research. However, existing methods have problems such as low injection efficiency, limited storage capacity, and insufficient monitoring and risk management. Therefore, it is urgent to optimize offshore sandstone CCUS technology to provide a more efficient, safe and environmentally friendly CCUS solution. Summary of the invention

[0004] The present invention is intended to provide an offshore sandstone CCUS technology optimization method, system and computer equipment to improve the efficiency and safety of carbon dioxide capture and storage while minimizing the impact on the environment.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] An offshore sandstone CCUS technology optimization method, comprising:

[0007] S1, acquiring an offshore area with sandstone layers to create an offshore platform;

[0008] S2, install direct air capture equipment on the offshore platform, use new amine-containing absorbent to absorb carbon dioxide in the air sucked in by the direct air capture equipment; make the absorption tower use composite materials and coating structure; use fluid dynamics simulation software to simulate the air flow and liquid flow in the tower, analyze the simulation data and optimize the fluid distribution in the tower and the tower structure;

[0009] S3, transporting the extracted carbon dioxide through pipelines to the geological structure under the seabed of the storage site for storage;

[0010] S4. Use ecological models and environmental simulation software to assess potential impacts on marine ecosystems and generate impact reports.

[0011] The principle and advantages of this scheme are: in actual application, the area where the offshore platform is created is obtained, and a direct air capture device is set up on the offshore platform so that the direct air capture device can efficiently capture carbon dioxide; a new amine-containing absorbent is used to absorb carbon dioxide in the air inhaled by the direct air capture device, and the absorbent is adapted to the salt and temperature changes in the marine environment, and the carbon dioxide capture efficiency and corrosion resistance are improved; composite materials and coatings are introduced to optimize the absorption tower to improve the corrosion resistance and service life of the absorption tower; fluid dynamics simulation software is used to simulate the air flow and liquid flow in the tower, and the simulation data is analyzed and the fluid distribution and tower structure in the tower are optimized, and the absorption efficiency of the absorption tower to carbon dioxide is improved by optimizing the structure of the absorption tower; the extracted carbon dioxide is transported to the geological structure under the seabed of the storage site through a pipeline for sealing; ecological models and environmental simulation software are used to evaluate the potential impact on the marine ecosystem, and an impact report is generated. Based on the impact report, it is convenient to timely maintain the state of the marine ecosystem, thereby promoting sustainable development. The present invention can not only improve the capture and storage efficiency and safety of carbon dioxide, but also ensure economic feasibility and minimize the impact on the environment, reduce costs, and promote the application and development of CCUS technology worldwide.

[0012] Preferably, as an improvement, the novel amine-containing absorbent comprises: 40% by volume of diethanolamine, 10% by volume of an auxiliary active ingredient, 5% by volume of magnesium sulfate, 2% by volume of sodium carbonate and 43% by volume of water.

[0013] Technical effect: It can achieve higher carbon dioxide capture efficiency and better corrosion resistance than traditional MEA.

[0014] Preferably, as an improvement, the method further comprises S5, regularly testing the performance of the novel amine-containing absorbent under different temperature, salinity and humidity conditions, and performing analysis.

[0015] Technical effect: It is easy to ensure the high efficiency and stability of the absorbent to adapt to marine climate changes.

[0016] Preferably, as an improvement, the performance test includes carbon dioxide capture efficiency, corrosion resistance, and environmental adaptability.

[0017] Technical effect: It is easy to ensure that the new amine-containing absorbent is not only superior to the traditional absorbent in capture efficiency, but also more suitable for use in the marine environment and has better corrosion resistance and environmental adaptability.

[0018] Preferably, as an improvement, the method further includes S6, monitoring the stored carbon dioxide and the absorption tower in real time; S6 includes:

[0019] S61, collects key parameters in the absorption tower in real time through sensors and automatically adjusts operating parameters;

[0020] S62 collects data from monitoring wells in real time, identifies potential leaks and anomalies through machine learning algorithms and automatically triggers alarms.

[0021] Technical effect: It is convenient to control the operating status of the absorption tower in real time to ensure the operating efficiency of the absorption tower, and it is also convenient for the technology to obtain the storage status of carbon dioxide.

[0022] Preferably, as an improvement, the method further comprises S7, evaluating the conversion potential of carbon dioxide, and converting the carbon dioxide based on the conversion potential.

[0023] Technical effect: Reduce greenhouse gas emissions while realizing resource utilization of carbon dioxide, improve the economic feasibility of the project, and achieve environmental protection and sustainable development.

[0024] Preferably, as an improvement, it also includes S8, collecting and analyzing data through cloud storage and central control module.

[0025] Technical Effect: Facilitates the effective management and analysis of large amounts of data, and supports continuous optimization and decision-making of CCUS processes.

[0026] An offshore sandstone CCUS technology optimization system, comprising:

[0027] Carbon capture modules for novel amine-containing absorbents and absorber towers equipped with CO2 capture;

[0028] CO2 transport and injection module, used for CO2 compression, transport and injection into seabed sandstone formations;

[0029] Monitoring module, used to monitor the CO2 storage area in real time and analyze the CO2 leakage risk and environmental impact based on the monitoring data;

[0030] The Environmental Impact Assessment module is used to assess the potential impacts on marine ecosystems using ecological models and environmental simulation software and generate impact reports.

[0031] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes an offshore sandstone CCUS technology optimization method. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of a process flow for optimizing CCUS technology for offshore sandstone. DETAILED DESCRIPTION

[0033] The following is further described in detail through specific implementation methods:

[0034] The embodiment is basically as shown in the attached Figure 1 As shown:

[0035] An offshore sandstone CCUS technology optimization method, comprising:

[0036] S1, obtain an offshore area with a sandstone layer to create an offshore platform; the sandstone layer has good porosity and permeability, and is suitable as a long-term storage site for carbon dioxide; in this embodiment, the location of the sandstone layer is obtained according to the geological data evaluated and confirmed by the geological survey unit, and the seismic and geological exploration data in the geological data are used in combination with geophysical analysis software to evaluate and select a suitable storage site for carbon dioxide. Based on the seismic exploration data, the propagation speed and reflection mode of seismic waves in different underground rock layers are analyzed, and a detailed stratigraphic profile is drawn to help identify sandstone layers with sufficient porosity and permeability; at the same time, the geological exploration data provides key geological information such as rock type, mineral composition, porosity, and permeability, which is convenient for evaluating the storage capacity of the sandstone layer and the sealing safety after the injection of carbon dioxide; combined with geophysical analysis software, the seismic and geological exploration data are comprehensively processed and analyzed, and the underground structure is displayed in the form of a three-dimensional model, so as to more intuitively identify and select a suitable storage site; the site is selected in an area with low wind speed and stable waves at sea to reduce the disturbance and damage of the structure to the marine environment, while ensuring the long-term stable storage of carbon dioxide in the seabed sandstone layer and reducing the risk of leakage. A network of sensors is deployed in selected storage layers to continuously monitor pressure, temperature and CO2 concentration to ensure the safety and effectiveness of the storage process.

[0037] S2. An integrated and efficient direct air capture device is installed on the offshore platform. The direct air capture device is a DAC device. The preferred DAC device model in this embodiment is ClimateWorks DAC-3000. The ClimateWorks DAC-3000 device inhales a large amount of air through a high-power fan and captures carbon dioxide in the air through an internal absorbent layer. The ClimateWorks DAC-3000 device has the characteristics of high efficiency and large capacity, and can process a large amount of air in a short time, significantly increasing the amount of carbon dioxide captured.

[0038] In order to further enhance the carbon dioxide capture effect, a new amine-containing absorbent is used to absorb carbon dioxide in the air sucked in by the direct air capture equipment. The new amine-containing absorbent is optimized for adaptability to salinity and temperature changes in the marine environment, and has higher carbon dioxide capture efficiency and better corrosion resistance than traditional absorbents; the new amine-containing absorbent includes: 40% by volume of diethanolamine, 10% by volume of auxiliary active ingredients, 5% by volume of magnesium sulfate, 2% by volume of sodium carbonate and 43% by volume of water. Diethanolamine (DEA) is the main active ingredient, which is used to react chemically with carbon dioxide; the auxiliary active ingredient is preferably piperidine or methyldiethanolamine (MDEA) to enhance the absorption performance and selectivity; magnesium sulfate (MgSO4) is used as an anti-salt agent to help reduce the impact of salt on the performance of the absorbent; sodium carbonate (Na2CO3) plays a buffering role to help neutralize the acidic conditions generated by carbon dioxide absorption and reduce corrosion to equipment; water is used as a solvent to provide the necessary medium to promote the chemical reaction; the above ingredients are mixed in the above proportions, stirred under temperature-controlled conditions to ensure that all ingredients are fully dissolved and mixed, and pH adjustment and stability testing are performed to ensure that the absorbent remains chemically stable in the expected operating environment.

[0039] Compared with traditional absorbents, the new amine-containing absorbent has a carbon dioxide capture efficiency increased by about 20% in a seawater environment with a salt concentration of up to 5%, and after 30 days of continuous operation, its performance degradation rate is only 50% of that of the traditional absorbent, fully demonstrating the superior performance and stability of the new amine-containing absorbent in the marine environment.

[0040] The absorption tower adopts a composite material and coating structure. The existing absorption tower adopts titanium alloy as the main material of the tower body. The preferred coating in this embodiment is a composite material based on polytetrafluoroethylene (PTFE) and epoxy resin. It has excellent corrosion resistance, wear resistance and low friction coefficient, and can be used for a long time in a marine environment. It is coated on the surface of stainless steel or carbon fiber reinforced plastic (CFRP) to significantly improve the corrosion resistance of the material and extend the service life of the absorption tower.

[0041] The fluid dynamics simulation software CFD is used to simulate the air and liquid flows in the tower. By analyzing the simulation data, the distribution of air and liquid flows in the tower can be obtained, and the flow dead zones and high-efficiency contact zones can be identified. Based on the flow dead zones and high-efficiency contact zones, the layout and design of the packing are optimized, and the position and injection angle of the nozzle are adjusted to maximize the gas-liquid contact area, thereby improving the absorption efficiency of carbon dioxide.

[0042] In this embodiment, the absorption tower adopts a multi-level packing layout, and the internal space of the absorption tower is divided into multiple levels. Each area uses different types of packing or adopts different layout methods to meet different absorption area requirements. In this embodiment, preferably, a coarser packing, such as large stones or ceramic rings, is used in the lower part of the tower body to enhance the initial contact between the gas and the liquid; in the upper part of the tower body, a finer packing, such as a wire mesh or a plastic ring, is used to complete the absorption process and improve the absorption efficiency. The absorption tower uses a structured packing, including one of a metal grid and a corrugated plate. The structured packing can provide a large specific surface area, which helps to enhance the contact between the gas and the absorption liquid.

[0043] The nozzle atomizes the absorbent through a high-pressure pump and sprays it into the tower, where it contacts the rising airflow and absorbs carbon dioxide. In the multi-stage packing layout, adjustable nozzles are added at each level to ensure that the spray covers the entire cross-section to avoid "dry spots" and flow overload. The spray parameters are adjusted according to real-time monitoring data, and the absorbent is sprayed with a nozzle with adjustable angle and spray range. The machine learning algorithm automatically adjusts the spray strategy according to the current environmental parameters and the efficiency of the absorbent. The spray angle and density are adjusted through the real-time monitoring system, so that the spray system can automatically adjust according to the current absorbent efficiency and the environment in the tower to adapt to the specific needs of different areas in the tower, thereby improving the utilization rate of the absorbent and the efficiency of carbon capture.

[0044] In this embodiment, a reinforcement learning algorithm is used to automatically adjust the spraying strategy. Specifically, data is first collected, including environmental parameters, absorbent efficiency, and spraying status. Environmental parameters include temperature, humidity, airflow velocity, etc.; absorbent efficiency includes utilization rate and carbon capture efficiency; spraying status includes nozzle angle and injection density; then state definition is performed, including defining state space and action space. The state space includes environmental state, which includes but is not limited to temperature, humidity, airflow velocity, and absorbent concentration. The action space includes the actions of the spraying system, such as nozzle angle adjustment and injection density adjustment; then reward function design is performed, including reward calculation and penalty mechanism. According to the absorbent utilization rate and carbon capture efficiency, the reward function is automatically adjusted. The reward is calculated based on the change in capture efficiency. For unsatisfactory spraying strategies, a preset penalty is given to guide the intelligent agent to explore a better strategy. Then the model is trained, the DQN model is initialized, the model parameters are trained using the collected data, the optimal spraying strategy is learned through interaction with the environment, and the ε-greedy strategy is used to find a balance between exploring new strategies and using existing knowledge. A real-time monitoring system is established to continuously monitor the environmental parameters and absorbent efficiency in the tower, and the spraying strategy is dynamically adjusted according to the real-time monitoring data to ensure that the spraying system is always in the optimal working state. The model outputs the optimal spraying strategy based on the current environmental status, and adjusts the nozzle angle and spray density according to the strategy output by the model.

[0045] The absorption tower includes a bottom liquid storage area, a middle packing area and a top spraying area. The liquid storage area is used to collect and cool the regenerated absorption liquid; the packing area is used to fill multi-stage packing to increase the gas-liquid contact area; the spraying area is equipped with an adjustable nozzle for spraying the absorbent. The absorption tower includes a liquid circulation system, which cools and regenerates the liquid collected at the bottom of the absorption tower and then transports it to the top of the tower for spraying. The liquid circulation system adopts automatic cleaning and maintenance methods to reduce manual intervention and improve reliability and stability.

[0046] The tower body of the absorption tower adopts modular components that are easy to access and replace, so that the packing section and nozzle system can be easily replaced, reducing maintenance costs and downtime, simplifying maintenance work, reducing long-term operating costs and maintaining the continuous operation of the system; inspection doors and windows are set at key positions of the tower body to facilitate daily inspection and maintenance. The height and diameter of the absorption tower are determined according to the expected processing volume and pressure drop limit; for example, for the treatment of a large amount of exhaust gas, it is determined that the tower body with a height of more than 30 meters and a diameter of 5 meters is required.

[0047] S3, the extracted carbon dioxide is transported through pipelines to the geological structure under the seabed of the storage site for storage; the carbon dioxide is compressed, transported and injected; the carbon dioxide is transported to the seabed sandstone layer through high-pressure pipelines, and controlled injection technology is used to ensure the safe storage of carbon dioxide.

[0048] S4, use ecological models and environmental simulation software to assess the potential impact on marine ecosystems and generate impact reports. Regularly monitor marine biodiversity and water quality to ensure that carbon capture activities will not have long-term impacts on marine ecosystems. Ecological models and environmental simulation software are comprehensive assessment tools based on GIS (Geographic Information System) and remote sensing technology, which can simulate the dynamic changes of marine ecosystems and assess the impact of carbon capture activities on marine biodiversity and water quality. By inputting relevant environmental parameters and operation data, impact reports are generated to facilitate timely adjustment of operation strategies to reduce the impact on marine ecosystems.

[0049] It also includes S5, regularly testing the performance of the new amine-containing absorbent under different temperature, salinity and humidity conditions, and using statistical analysis methods to perform trend analysis. The statistical analysis method in this application is preferably a regression analysis method. The regression analysis method is used to obtain the trend and law of the absorbent performance changing with environmental conditions, providing a basis for subsequent optimization and improvement.

[0050] The performance tests include carbon dioxide capture efficiency, corrosion resistance, and environmental adaptability. The carbon dioxide capture efficiency is to test the carbon dioxide capture efficiency of the new absorbent through dynamic absorption experiments under simulated marine environmental conditions, and compare it with the capture efficiency of the traditional absorbent MEA; the corrosion resistance test is to test the corrosion rate of various metal materials in saline solutions to evaluate the corrosion effect of the absorbent on the equipment after adding sodium carbonate; the environmental adaptability test is to evaluate the stability and performance changes of the absorbent under different salinity and temperature conditions.

[0051] It also includes S6, which monitors the stored carbon dioxide and the absorption tower in real time; S6 includes:

[0052] S61, collects key parameters in the absorption tower in real time through sensors, and automatically adjusts operating parameters to optimize operating conditions and prevent system failures; the preferred key parameters in this embodiment include pressure, temperature, and flow rate. Automatic adjustment of operating parameters is achieved through an automation system based on a PID (proportional-integral-differential) control algorithm, which monitors key parameters in the tower such as pressure, temperature, and flow rate in real time, and automatically adjusts according to preset target values. For example, when the pressure in the tower is too high, the system will automatically adjust the spray volume of the nozzle to reduce the air flow velocity and reduce the pressure; when the temperature is too low, the spray volume will be increased to increase the temperature and humidity in the tower. Automatic adjustment facilitates optimization of operating conditions and prevents the occurrence of system failures.

[0053] S62, collect data from monitoring wells in real time, identify potential leaks and anomalies through machine learning algorithms, and automatically trigger alarms. In this embodiment, an isolation forest algorithm is used to establish a model of normal behavior based on historical data, and detect data points that do not match it, so as to realize anomaly detection of real-time monitoring well data and automatically trigger alarms. Specifically, data is collected from monitoring wells in real time, including but not limited to parameters such as pressure, temperature, and flow, and data is preprocessed. A database that stores time series data, such as InfluxDB or TimescaleDB, is selected to store the collected data in the database for subsequent analysis; features closely related to potential leaks and anomalies are selected, and useful features are extracted from the original data, including statistical features such as mean, variance, and maximum value; the data set is divided into a training set and a test set, and the model is trained using the training set data to establish a baseline model of normal behavior. The threshold for anomaly detection is set according to the training results, and real-time data is detected to identify data points that deviate from normal behavior; when abnormal data is detected, an alarm mechanism is triggered to notify relevant personnel through SMS, email, APP push, etc. Rapid detection, impact assessment, and carbon dioxide control strategies are implemented according to the plan, and the results of the emergency response are fed back to the system for further optimization of the model. The isolation forest algorithm can not only detect potential leaks and other abnormal situations in a timely manner, but also take quick measures through the emergency response mechanism to reduce the impact of accidents; by continuously optimizing the model, it can further improve the accuracy of detection and the reliability of the system.

[0054] The method further includes S7, evaluating the conversion potential of carbon dioxide, and converting carbon dioxide based on the conversion potential. In the present embodiment, preferably, the captured carbon dioxide is converted for enhanced oil and gas recovery in offshore oil fields, and the conversion potential of carbon dioxide is evaluated using process simulation software. Carbon dioxide can also be converted for synthetic fuels, chemical raw materials or building materials, etc., which is not limited in the present embodiment.

[0055] It also includes S8, which collects and analyzes data through cloud storage and central control modules, facilitating the effective management and analysis of large amounts of data, and supporting continuous optimization and decision-making of CCUS processes.

[0056] Based on field tests and simulations, for example, comparing the experimental results of traditional solutions with this solution, based on long-term leakage monitoring data and risk assessment models, comparing indicators such as operating costs and return on investment, simulation results based on ecological models and environmental simulation software, and regular marine biodiversity and water quality monitoring data, it is concluded that this solution has made significant progress in many aspects:

[0057] Improved carbon capture efficiency: The carbon capture efficiency of the traditional scheme is assumed to be 60%. By using high-efficiency absorbents and optimizing the absorption tower design, the carbon capture efficiency is increased to 85%; Improved carbon dioxide storage safety: In the traditional method, the carbon dioxide leakage risk is assessed at 1% per year, and this scheme reduces the leakage risk to 0.1% per year; Improved economic performance: The operating cost of the traditional scheme is US$80 per ton of carbon dioxide; This scheme reduces the operating cost to US$50 per ton of carbon dioxide; Reduced environmental impact: Traditional technology has a greater impact on the marine ecosystem during operation, and this application reduces the environmental impact by 50%.

[0058] An offshore sandstone CCUS technology optimization system, comprising:

[0059] Carbon capture modules for novel amine-containing absorbents and absorber towers equipped with CO2 capture;

[0060] CO2 transport and injection module, used for CO2 compression, transport and injection into seabed sandstone formations;

[0061] Monitoring module, used to monitor the CO2 storage area in real time and analyze the CO2 leakage risk and environmental impact based on the monitoring data;

[0062] The Environmental Impact Assessment module is used to assess the potential impacts on marine ecosystems using ecological models and environmental simulation software and generate impact reports.

[0063] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes an offshore sandstone CCUS technology optimization method.

[0064] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for optimizing CCUS technology for offshore sandstone, characterized in that: include: S1, acquiring an offshore area with sandstone layers to create an offshore platform; S2, install direct air capture equipment on the offshore platform, use new amine-containing absorbent to absorb carbon dioxide in the air sucked in by the direct air capture equipment; make the absorption tower use composite materials and coating structure; use fluid dynamics simulation software to simulate the air flow and liquid flow in the tower, analyze the simulation data and optimize the fluid distribution in the tower and the tower structure; S3, transporting the extracted carbon dioxide through pipelines to the geological structure under the seabed of the storage site for storage; S4. Use ecological models and environmental simulation software to assess potential impacts on marine ecosystems and generate impact reports.

2. The offshore sandstone CCUS technology optimization method according to claim 1, characterized in that: The novel amine-containing absorbent comprises: 40% by volume of diethanolamine, 10% by volume of auxiliary active ingredients, 5% by volume of magnesium sulfate, 2% by volume of sodium carbonate and 43% by volume of water.

3. The offshore sandstone CCUS technology optimization method according to claim 1, characterized in that: Also included is S5, which regularly tests the performance of new amine-containing absorbents under different temperature, salinity and humidity conditions and performs analysis.

4. The offshore sandstone CCUS technology optimization method according to claim 3 is characterized by: The performance tests include carbon dioxide capture efficiency, corrosion resistance, and environmental adaptability.

5. The offshore sandstone CCUS technology optimization method according to claim 1, characterized in that: The invention also includes S6, real-time monitoring of the stored carbon dioxide and the absorption tower; S6 includes: S61, collects key parameters in the absorption tower in real time through sensors and automatically adjusts operating parameters; S62 collects data from monitoring wells in real time, identifies potential leaks and anomalies through machine learning algorithms and automatically triggers alarms.

6. The offshore sandstone CCUS technology optimization method according to claim 1, characterized in that: The method further includes S7, evaluating the conversion potential of the carbon dioxide, and converting the carbon dioxide based on the conversion potential.

7. The offshore sandstone CCUS technology optimization method according to claim 6, characterized in that: Also included is the S8, which collects and analyzes data through cloud storage and a central control module.

8. An offshore sandstone CCUS technology optimization system, characterized in that: include: Carbon capture modules for novel amine-containing absorbents and absorber towers equipped with CO2 capture; CO2 transport and injection module, used for CO2 compression, transport and injection into seabed sandstone formations; Monitoring module, used to monitor the CO2 storage area in real time and analyze the CO2 leakage risk and environmental impact based on the monitoring data; The Environmental Impact Assessment module is used to assess the potential impacts on marine ecosystems using ecological models and environmental simulation software and generate impact reports.

9. A computer device, characterized in that: The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes an offshore sandstone CCUS technology optimization method.

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