297 results about "Co2 storage" patented technology

The invention provides a CO2 sequestration simulation method based on transfer learning and a physical information neural network, which aims at a geological carbon dioxide sequestration process by combining the transfer learning and the physical information neural network, and comprises the following steps of: simulating and generating data by using a Matlab oil reservoir simulation tool box, and constructing a neural network basic model; the physical law of carbon dioxide migration in the porous medium is trained and learned through coarse resolution, then fine tuning is performed on the generated actual geological model data by adopting a migration learning strategy to adapt to different geological structures and injection conditions, and a neural network loss function is embedded in combination with a Darwest equation and a mass conservation equation to obtain a carbon dioxide migration model. Compared with a traditional numerical simulation method, the method has the advantages that the calculation efficiency is remarkably improved while the prediction precision is kept, and the method is suitable for carbon dioxide sequestration optimization and environmental risk assessment under complex geological conditions and has good industrial popularization value and environmental benefits.

The invention is applicable to the technical field of coal bed gas development and geological sequestration, and provides a THMC multi-field coupling simulation method and system for a process of displacing CH4 by coal bed CO2, and the method comprises the following steps: collecting multi-source parameter information of a target coal bed; according to the multi-source parameter information, constructing a coal seam structure model comprising a matrix and a crack system; constructing a control equation system based on the coal seam structure model, and introducing a multi-field coupling mechanism to obtain a fully-coupled mathematical model; performing numerical solution on the fully-coupled mathematical model to obtain a spatio-temporal evolution result of the key field variables; and according to the spatio-temporal evolution result of the key field variable, evaluating the index of the target coal seam. According to the invention, a heat-force-gas-chemical multi-physical field full-coupling simulation system is constructed, so that the CH4 recovery rate and the CO2 storage stability can be accurately predicted. The method is suitable for gas injection-storage coupling optimization of a multi-coal-rank and low-permeability coal seam, and has high precision, high adaptability and remarkable engineering guidance value.

The invention discloses a deep coal seam CO2 storage potential calculation method based on coal seam geological characteristics, and belongs to the technical field of CO2 geological storage. The method comprises the following steps: firstly, acquiring excess adsorption quantity of CO2 adsorbed by a coal seam under different time actions, and constructing an adsorption quantity calculation model under different time parameters by utilizing a relationship between the excess adsorption quantity and absolute adsorption quantity; then fitting porosity data under different adsorption times, and constructing a coal quality unit mass CO2 free quantity model; then, according to the CO2 solubility calculation model and the characteristic parameters of the target coal seam, a unit mass CO2 dissolved amount model is constructed; then, data of the relation between the migration distance of CO2 in the coal seam and time is taken, and a time-migration distance formula is fitted; and finally, establishing a unit mass coal sample supercritical CO2 storage capacity calculation model, and constructing a theoretical storage amount and actual storage amount equation of CO2 geological storage. By adopting the calculation method, a theoretical reference can be provided for shut-down coal mine CO2 sequestration development and utilization strategy research and sequestration address selection.

The invention provides a ship LNG fuel supply and tail gas carbon dioxide capture system. The ship LNG fuel supply and tail gas carbon dioxide capture system comprises an LNG storage tank, a CO2 separation device, a CO2 compressor, an ejector, an LNG vaporization heater, a mixed gas heat exchanger, a flash tank, a liquid CO2 storage tank, a flue gas heat exchanger and an engine. According to the system, LNG cold energy and engine tail gas heat energy can be effectively utilized, and the energy consumption of the system is reduced.

The invention relates to compressed carbon dioxide energy storage equipment, a carbon dioxide storage device and a control method, a plurality of independent carbon dioxide storage air bags are detachably installed on a supporting frame, and the carbon dioxide storage air bags can serve as floating assisting air bags of water equipment after storing air; each carbon dioxide storage air bag is independently monitored and controlled through an inflation and deflation control component, the pressure of air stored in each air bag can be monitored in real time, and the storage and release amount of carbon dioxide can be quickly and flexibly adjusted; the displacement sensor monitors the posture change of the supporting frame in real time, the controller adjusts the inflation and deflation strategy or the system operation state in time according to the current air pressure state of each carbon dioxide storage air bag and the posture change of the supporting frame, and air bag damage or system faults caused by structural instability are effectively prevented. A plurality of independent carbon dioxide storage air bags in the air bag type storage device can be flexibly arranged on a supporting frame to adapt to different terrains and space constraints.

The invention discloses a method for simulating and calculating the CO2 burying rate of an exhausted gas reservoir, which comprises the following steps: S1, acquiring rock core, formation water, methane and CO2 samples, and measuring the basic physical properties of each sample; s2, under the formation condition, the rock core is saturated with formation water and subjected to methane displacement till no water is discharged; s3, CO2 displacement is conducted on the rock core, and CO2 injection and extraction data in the process are recorded till the depletion state is achieved; s4, under the constant pressure condition, the rock core is subjected to standing treatment, and the basic physical property of the rock core subjected to standing treatment is measured; and S5, establishing a CO2 burying rate calculation model, and calculating the CO2 burying rate in combination with the parameters obtained in the steps. According to the method, the CO2 burying rate can be accurately calculated, and evaluation indexes and references are provided for the safety of CO2 geological storage.

The invention relates to the technical field of methanol resource utilization, and discloses a system for preparing methanol based on SOEC-CH4 electrolysis, which is characterized in that a cathode subsystem main body reacts to generate water vapor and H2 mixed gas, the water vapor and H2 mixed gas are condensed and separated to obtain H2, and most of H2 is conveyed to an H2 storage buffer tank and stored; the anode subsystem for preparing CO2 comprises a CH4 tank, an anode subsystem main body and an electrolytic bath anode of an SOEC electrolytic bath which are communicated in sequence, and the anode subsystem main body reacts to generate water vapor, CH4 and CO2 mixed gas; the mixed gas of the water vapor, CH4 and CO2 is subjected to condensation and adsorption separation to obtain CO2, and most of CO2 is conveyed to a CO2 storage buffer tank to be stored; and the methanol preparation subsystem reacts to obtain methanol. According to the system for preparing methanol through electrolysis, methane is introduced to prepare carbon dioxide, the technical problems of high energy consumption and low comprehensive utilization rate of waste heat and wastewater are solved, and cost is greatly reduced to prepare methanol.

The invention discloses a storage medium and a CO2 storage site escape emission calculation method, device and equipment. The method comprises the steps that after a target monitoring area is gridded, the emission amount of carbon dioxide escaping from a storage bottom layer to the ground surface in each grid is obtained; accumulating the carbon dioxide emissions of the grids to generate CO2 geological dissipation emissions of the target monitoring area in a preset statistical period; acquiring monitoring data of each preset point location; according to the monitoring data, the emission amount of carbon dioxide escaping in the conveying process of the carbon dioxide separated from the produced gas is calculated through a preset algorithm; according to the CO2 geological dissipation emission and the emission of the carbon dioxide dissipated in the conveying process of the carbon dioxide separated from the produced gas, the dissipation emission of the CO2 storage site is calculated. According to the method, the CO2 geological dissipation emission amount and the carbon dioxide emission amount dissipated in the conveying process are added, and the CO2 storage site dissipation emission amount of the whole target monitoring area in the statistical period is comprehensively and accurately obtained.

The invention discloses a coal-fired unit energy storage coupling carbon capture system and method based on calcium circulation, and aims to realize efficient and cheap capture of CO2 in flue gas while performing energy storage peak regulation of a coal-fired unit. The system comprises main equipment such as a calcination / heat absorption reactor, a pressurized carbonation / heat release reactor, a CaCO3 storage tank, a CaO storage tank and a CO2 storage tank, and auxiliary equipment such as a gas booster compressor, residual pressure power generation equipment, an electric heating module, a dust remover, a gas cooler, a solar gas heater and a smoke-CO2 heat exchanger. According to the method, electric energy of green electricity or valley electricity and heat energy of high-temperature flue gas of a boiler are converted into chemical energy by adopting the cyclic calcination characteristic of CaCO3-based particles and stored in the CaCO3-based particles, and the chemical energy is released again in the form of heat energy when a unit supplies heat to the outside or a power grid uses electricity at the peak. The system has high operation flexibility and economical efficiency.

The invention discloses a land-sea integrated full-process CO2 geological utilization and storage project technical economic evaluation method and tool. The method comprises the following steps: S1, evaluating and delimiting a full-process CO2 geological utilization and storage range; step S2, an evaluation process; s3, selecting a full-process CCUS technical scheme; and S4, carrying out full-process CCUS technical economic evaluation. The invention relates to the technical field of environmental science and engineering. According to the land-sea integrated full-process CO2 geological utilization and storage project technical economic evaluation method and tool, the problem of how to obtain information such as a technical scheme, cost budget, project layout and planning of a full-process CO2 geological utilization and storage project suitable for an enterprise or a technical and economic environment under the condition of lacking CO2 storage project experience and data is solved; and the feasibility of project development is provided.

The invention discloses a zero-carbon method for strengthening coal seam gas recovery and CO2 storage by using flue gas residual heat in the technical field of residual heat utilization, gas extraction and carbon emission reduction. The zero-carbon method comprises the following steps: step 1, collecting high-temperature flue gas in a power plant; step 2, performing high-temperature CO2 concentration-compression; step 3, reservoir evaluation and area selection; 4, designing and constructing a horizontal well; 5, high-temperature CO2 injection and joint control energy increasing are conducted, specifically, high-temperature CO2 is injected into a preset section through a pump, the injection pressure and the injection speed are adjusted through the joint control energy increasing technology, and the diffusion range and the diffusion speed of CO2 are controlled; 4, gas recovery and CO2 storage: high-temperature CO2 is used for providing energy to promote gas desorption on one hand, and the high-temperature CO2 and CH4 in the adsorption state are subjected to competitive adsorption on the other hand. The method is simple and easy to operate, the coal seam gas partial pressure is reduced through CO2 injection, the recovery efficiency is improved, CO2 can be adsorbed by a coal seam and stored in a reservoir, and geological storage of CO2 is achieved.

A method for predicting CH4 production and CO2 sequestration in a CO2-ECBM process belongs to the field of natural hydrogen resource exploration, and is technically characterized by comprising the following steps: constructing a multiphase and multicomponent coupling model for describing the migration process of water, methane and carbon dioxide of a stratum coal bed gas reservoir; the method comprises the following steps: constructing a geologic model of a stratum coalbed methane reservoir, performing grid division on the geologic model to obtain a plurality of grid units reflecting different spatial distribution positions of the coalbed methane reservoir, and setting initial conditions and boundary conditions of the geologic model; and according to the multiphase and multicomponent coupling model, solving spatio-temporal evolution characteristics of pressure and concentration of water, methane and carbon dioxide of each grid unit of the geologic model to obtain distribution in time and space. According to the method, the influence of the underground water in the coal bed gas on the migration behavior of methane and carbon dioxide is fully considered, the limitation of prediction result deviation caused by neglecting the effect of the underground water in the existing research is overcome, and the accurate prediction of the methane yield and the carbon sequestration amount in the CO2-ECBM process is realized.

The invention relates to the technical field of coal mine gas control and CO2 geological storage, and particularly discloses a soft coal seam dynamic fracture self-adaptive CO2 displacement-anti-reflection integrated system which comprises a dynamic fracture monitoring unit, a CO2 collaborative anti-reflection unit, a self-adaptive regulation and control unit and a safety protection unit. The dynamic fracture monitoring unit is used for capturing coal seam fracture development dynamics and gas injection process parameters in real time; the self-adaptive regulation and control unit is in communication connection with the dynamic fracture monitoring unit, and the CO2 synergistic anti-reflection unit is in control connection with the self-adaptive regulation and control unit and is used for realizing CO2 enhanced anti-reflection displacement; the safety protection unit is used for guaranteeing system operation safety. According to the method, real-time adaptation of the coal seam fracture state and the injection-production parameters is achieved, the problems that in a traditional fixed parameter mode, the displacement efficiency attenuation is fast, and the coal body stability is poor are solved, the CH4 recovery rate and the CO2 storage rate are increased, and the safety and high efficiency of soft coal seam gas control operation are guaranteed.

To provide a technique for improving the utilization rate of carbon dioxide in a fuel gas production system.SOLUTION: The fuel gas production system includes a storage device including a recovery device configured to recover carbon dioxide, a recovery unit configured to recover carbon dioxide separately from the recovery device, and a storage unit configured to store the carbon dioxide recovered by the recovery unit, a fuelization device configured to supply hydrogen and at least one of the carbon dioxide recovered by the recovery device and the carbon dioxide stored by the storage device to a reactor to generate fuel gas, and a control unit configured to control the storage device to supply the carbon dioxide recovered by the recovery unit to the storage unit when a differential pressure becomes smaller than a differential pressure threshold.SELECTED DRAWING: Figure 4

A gas supply and carbon capture system, comprising an LNG tank, a BOG compressor set, a dual-fuel engine, a CO2 capture unit, a CO2 compressor, a heat exchanger, and a CO2 storage tank, wherein the LNG tank is used for storing liquid LNG, BOG formed at the inner top of the LNG tank is fed to a cold side of the heat exchanger; the heat exchanger is used for heat exchange between pressurized CO2 and the BOG, cold energy of the BOG is utilized to liquefy the CO2, the obtained liquid CO2 is stored in the CO2 storage tank, and the BOG having a higher temperature after the heat exchange is sent to the BOG compressor set; and the BOG compressor set is used for pressurizing the BOG having a higher temperature and then delivering the BOG to the dual-fuel engine for combustion, and the BOG compressor set employs normal-temperature compressors. By means of the system, the cold energy of the BOG from the LNG tank is fully utilized, and the temperatures of the BOG entering the BOG compressors are caused to meet an inlet temperature requirement of the normal-temperature compressors.

The invention discloses a supercritical CO2 centrifugal compressor and turbine performance test combined test bench system and method. The device is mainly composed of a compressor, a turbine, an electric heater, a cooler, a surge tank, a CO2 storage tank, valves and pipelines, a motor drives the compressor through a gearbox and is connected with a rotating shaft of the turbine through a clutch, and a main circulation loop is sequentially connected with the compressor, the turbine, the cooler, the surge tank and the electric heater in series. Through cooperation of bypass valve switching, clutch separation and reunion and a system control strategy, seamless switching of five test modes can be achieved without shutdown or pipeline disassembly and assembly, and the five test modes comprise a turbine connection and independent compressor performance test, a turbine performance test and a key component performance test. And a complete supercritical CO2 Brayton cycle system stable operation and control strategy verification test is carried out. The system has the characteristics of high efficiency and high test continuity, and provides a multifunctional and low-cost comprehensive test platform for research and development of a supercritical CO2 power device.

This invention discloses a CO2 direct air capture system and method for increasing CO2 partial pressure. The system includes a first air pump, a second air pump, a microbial fuel cell device, a CO2 capture device, a rich liquid desorption unit, and a CO2 storage unit. The microbial fuel cell device includes a reactor housing, a proton exchange membrane, wires, and external circuitry. The first air pump is located outside the microbial fuel cell device and pumps ambient air into the cathode chamber. A jacket is provided outside the reactor housing to enclose the reactor housing. The CO2 capture device is a sealed housing with a liquid inlet, a liquid outlet, an air inlet, and an air outlet. The air outlet of the cathode chamber of the microbial fuel cell device is connected to the air inlet of the CO2 capture device via a pipe, and a second air pump is installed on the pipe. The rich liquid desorption unit includes a battery waste heat heating device and an electrically heated desorber. The CO2 storage unit includes a CO2 compressor and a CO2 storage container.

The invention discloses a carbon dioxide sequestration monitoring method and device based on InSAR and distributed optical fibers. The method comprises the following steps: acquiring first earth surface deformation data of a CO2 sequestration field and a target area by using a satellite time sequence InSAR; the method comprises the following steps: acquiring temperature field data of a target area in real time by using a distributed optical fiber sensing system arranged in a CO2 storage field; performing reverse correction on the earth surface deformation data by taking the temperature field data as a calibration reference to obtain corrected second earth surface deformation data; and determining a potential CO2 leakage abnormal area in the target area based on the temperature field data and the second earth surface deformation data. According to the invention, the problem of insufficient monitoring precision of single satellite remote sensing in a complex terrain area is solved, and high-precision and omnibearing monitoring of a CO2 storage field is realized.

A supercritical carbon dioxide cycle power generation system and method based on spectral modulation is described. The system consists of a solar heating section, a carbon dioxide storage section, a compression section, and a power generation section. The solar heating section includes a radiant heater and a field of mirrors; the carbon dioxide storage section includes an energy balancer (2); the compression section includes a drive motor, a compressor, a cooler, and a regenerator; and the power generation section includes a turbine and a generator. The present invention utilizes a spectral modulation coating to adjust the solar visible spectrum to the infrared band absorbable by carbon dioxide, and exploits the rapid temperature rise properties of solid particles absorbing solar energy. This allows the carbon dioxide to be rapidly heated to a high temperature through radiation-coupled convection before participating in the power generation cycle. A supercritical energy balancer is also provided to balance the intermittent nature of solar energy and to reuse abandoned electricity at night.

The invention provides a zero-emission power circulation and fuel gas supply system and method for an LNG power-driven ship. The system comprises an internal combustion engine, a nitrogen membrane separation device, a heat regenerator, a water separator, a liquid CO2 storage tank, a liquid oxygen pump, an LNG pump, an LNG storage tank, a liquid oxygen storage tank, a CO2 condenser, a circulation compressor, a gas buffer tank, a CO2 separator, a first-stage water cooler and a second-stage intermediate heat exchanger. According to the internal combustion engine, LNG serves as fuel, an argon and oxygen mixture serves as a circulating working medium to replace air and natural gas to be combusted and push a piston to move, water vapor and gas CO2 in waste gas generated by the internal combustion engine are condensed and separated after being subjected to stepped cooling, and CO2 is liquefied through a circulating compressor and recycled to a liquid CO2 storage tank. According to the invention, argon is used for replacing air to realize waste heat recovery of the internal combustion engine, so that the energy efficiency of the system is improved, and meanwhile, CO2 capture and zero emission of gaseous pollutants are realized.

The present invention discloses a fracturing and sealing device and method based on supercritical CO2 injection into basalt. The fracturing and sealing device includes: a test body module, including a basalt sample; an injection module, which injects the required gas, liquid or gas-liquid mixture into the test body module; a pressure loading module, which is connected to the test body and applies axial pressure and / or confining pressure to the test body module; wherein the injection module and the pressure loading module are configured to achieve fracturing of the basalt sample, as well as the radial permeability of the basalt sample after fracturing and the sealing of CO2 by the basalt sample after fracturing. It can overcome the limitations of the single function of traditional indoor test devices and achieve a comprehensive understanding of the fracturing and sealing process under complex formation environmental conditions; it is also convenient for analyzing the formation law of basalt fracture networks, evaluating the permeability of fracture networks, and comparing the feasibility and effectiveness of basalt mineralization and CO2 storage under different injection modes.

The utility model discloses an automatic unloading system for liquid carbon dioxide, which is simple and novel in operation method and convenient to operate. According to the automatic unloading system, a gas-phase hose is connected with a gas-phase pipe section of a ship filling station and a gas return pipe of a wharf / transport ship filling station; a liquid-phase hose is connected with a liquid-phase pipe section of a ship filling station and a CO2 injection pipe of a wharf / transport ship filling station, and unloading is completed by generating power through the pressure difference between CO2 liquid in a ship CO2 storage tank and CO2 liquid in the CO2 storage tank. Meanwhile, an instrument signal cable and a ship-shore communication system collect and input ship unloading information and wharf injection information into a ship central control system, and after the ship unloading information and the wharf injection information are processed by the central control system, instructions are sent to corresponding control valves, and automatic control is achieved. Compared with the prior art, installation of a CO2 liquid pump or an immersed pump, a CO2 gas generator and corollary equipment and pipelines thereof is omitted, and cost is saved.

The application discloses a kind of based on dimensionless number Ca, Gr and Bo's saltwater layer CO2 storage safety evaluation method, it is related to oil reservoir and underground water numerical simulation technical field, comprising: (1) the establishment of saltwater layer CO2 storage geological model, including target reservoir, interlayer and overlying saltwater layer;(2) crack model and monitoring point are established in interlayer;(3) the geological model is initialized;(4) research CO2 leakage dynamics, calculate force and dimensionless number;(5) calculate storage safety factor;(6) change initialization condition, repeat steps (4)-(5), obtain three groups of dimensionless number and storage safety factor;(7) establish the linear regression model of storage safety factor and dimensionless number, calculate saltwater layer CO2 storage safety factor.The method of the application can adapt to various schemes under different properties reservoir, different pressure gradient, the main driving force and leakage law in the process of CO2 leakage through crack are clarified, with strong adaptability, high calculation efficiency advantage.

A system and method for sequestration and reduction of carbon dioxide (CO2) to a carbon material via an integrated microbial and chemical catalytic processes are described. The system and method comprise a bioreactor in gas communication with a pyrolysis reactor, wherein the microbes of the bioreactor uptake CO2 dissolved in aqueous solution and convert it to a volatile organic carbon compound, such as, for example, methane, which, in turn is fed into the pyrolysis reactor for catalytic conversion to a carbon material, wherein the carbon material may include crystalline carbon. The thus obtained carbon material is easily collectable for various high end uses or for CO2 storage.

The invention relates to the technical field of flue gas emission treatment, and discloses a flue gas decarburization method and system based on heat integration and efficient flash regeneration, the system comprises an absorption tower, the absorption tower is internally provided with an atomization filler and a barren liquor inlet; the lower end of the absorption tower is connected with a heat integration module through a rich liquid pump, and the output end of the heat integration module is connected to the upper end of the regeneration tower; a spiral demister, a filler layer and a reheater are sequentially arranged in the regeneration tower from top to bottom; the system further comprises a flash compressor, a reboiler and a CO2 compressor, the flash compressor is connected with the reheater, and the reboiler is used for conveying a heat source into the regeneration tower; and the CO2 compressor is arranged between the heat integration module and the CO2 storage tank, compresses the desorbed CO2 and sends the compressed CO2 into the CO2 storage tank. By cooperatively controlling the pressure and the temperature, the CO2 desorption rate and yield are increased, the barren liquor load is reduced, the barren liquor absorption capacity is improved, the desorption energy consumption is remarkably reduced, and energy-saving and efficient carbon neutralization treatment is achieved.

The present application belongs to the technical field of ship, and proposes a full-pressure type CO2 system and method for storing and capturing of LPG ship liquid cargo tank, which comprises a liquid CO2 storage tank, a compressor, a seawater heat exchanger, a stop valve and an LPG liquid cargo tank. The application ingeniously utilizes the sufficient storage space of the LPG liquid cargo tank when the LPG ship returns empty, compresses the gaseous CO2 captured by the ship, and stores it in the empty LPG liquid cargo tank. When the ship returns to the loading port, the gaseous CO2 is sent to the land for treatment. Through the method of the application, the LPG liquid cargo tank of the ship can maximize the storage of the CO2 captured when the ship returns empty, which not only can reduce the burden of the ship power grid, but also can save the economic cost of liquefied CO2, and has good economy and practicability.

The invention relates to the technical field of CO2 burying and storing amount calculation, in particular to an exhausted condensate gas reservoir CO2 structure burying and storing amount calculation method and device, electronic equipment, a storage medium and a computer product. The method comprises the following steps: constructing a depleted condensate gas reservoir CO2 buried substance balance equation; deducing the depleted condensate gas reservoir CO2 burying material balance equation, and constructing a depleted condensate gas reservoir CO2 structure burying amount calculation model; based on the depleted condensate gas reservoir CO2 structure burying stock calculation model, the depleted condensate gas reservoir CO2 structure burying stock is obtained. According to the method, the change of a mixed gas deviation factor after CO2 injection, the change of the saturation degree of residual stratum condensate oil in the CO2 injection process and the influence of deformation of rocks and bound water are considered. The calculation result of an example shows that the CO2 structure burying amount under different burying pressures in the new method is basically matched with the calculation result of a numerical simulation method, and the error is kept within 6.42%.

The invention relates to the technical field of particle catcher regeneration test, and discloses an active regeneration temperature control test device for a particle catcher, comprising: a storage tank in which a gas storage area is formed; the two gas tanks are arranged on the surface of the storage tank, and one gas tank is communicated with the carbon dioxide storage equipment; the gas conveying assembly is arranged on the storage tank, communicates with the gas tank and is used for conveying gas with different oxygen contents into the storage tank; and the temperature adjusting assembly is arranged on the surface of the other side of the storage tank, the gas in the storage tank is heated by the temperature adjusting assembly, and the temperature adjusting assembly can adjust the temperature of the gas. The active regeneration temperature control test device of the particle catcher aims to solve the problem that the experiment process is long due to the fact that the oxygen content and the temperature serve as main influence variables, and specific data cannot be rapidly and effectively obtained in the experiment process.

The present application belongs to the technical field of hydrate exploitation and CO2 storage, and discloses a continuous and synchronous method for hydrate exploitation and CO2 storage based on pressure distribution, which measures the related basic parameters of a reservoir, determines the phase equilibrium pressure of natural gas hydrate and CO2 hydrate in the hydrate reservoir, determines the exploitation scheme of the hydrate reservoir, determines the formation method of the CO2 cap layer, determines the dynamic change of the gas phase permeability in the hydrate decomposition reservoir, couples the related parameters such as effective stress and hydrate saturation, combines the control equation, determines the position of the pressure decomposition front in the hydrate reservoir, compares the position of the CO2 cap layer, optimizes and adjusts the position of the cap layer, determines the decomposition degree of the hydrate decomposition reservoir, and completes the high-density storage of CO2 in the abandoned natural gas reservoir. The present application realizes the continuous and synchronous operation of hydrate exploitation and CO2 storage, and greatly improves the efficiency of hydrate exploitation and CO2 storage.

The invention relates to a method for controlling a system (10) for separating carbon dioxide (48) from the ambient air (74). The method distinguishes between normal operation, in which carbon dioxide (48) is separated from the ambient air (78), and special operation, which is not primarily used for separating carbon dioxide (48). Normal operation comprises conveying (110) an air stream (68) of the ambient air (74) into a first process chamber (26) of the system, wherein the air stream (68) is dried in the first process chamber (26). The dried air stream (68) of the ambient air is passed from the first process chamber (26) into a second process chamber (27), in which adsorption and subsequent desorption of carbon dioxide (48) takes place. The desorbed carbon dioxide is stored in a storage unit (16). It is intended that the plant (10) will be operated in a special operation that differs from the normal operation, which will take place before or after the normal operation, whereby the plant (10) will be operated in the special operation with operating parameters that differ from the normal operation. The invention further relates to a system (10) for carrying out such a process.