170 results about "Co2 storage" patented technology

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 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 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.

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

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.

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.

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 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 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 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 belongs to the technical field of zero-emission cleaning of electronic-grade chemical storage and transportation equipment, and discloses a zero-liquid and zero-solid emission dry-type cleaning system and method for the interior of a tank car. The zero-liquid and zero-solid emission dry-type cleaning system and method utilize supercritical carbon dioxide to cooperate with plug-in resorption, miniature ultrasonic cavitation, on-line barrel type filtration, a substitution type low-residue entrainer and an original manhole equal-diameter seal. The system sequentially comprises a liquid CO2 storage tank, a pressure and temperature rising unit, a static mixer, a top cover sealing assembly, an insertion type back-suction cleaning head, an on-line barrel type filtering unit, an on-line particle monitor and a PLC (Programmable Logic Controller) along a material flowing direction, the top cover sealing assembly comprises a top cover with the same diameter as the manhole flange, a stainless steel feeding / suction pipe and a quick-opening clamp, and original manhole-level sealing is formed. According to the device, insertion and sealing are completed through an original manhole or an original discharge port, after cleaning, the particle size is smaller than or equal to 10 pcs / mL, the metal impurity size is smaller than or equal to 1 ppt, the CO2 recovery rate is larger than or equal to 99%, the preparation time is smaller than or equal to 15 min, the cost is reduced by 40-70%, and the requirements of ppt-grade cleaning of 12-30 nm electronic-grade chemicals for advanced manufacturing procedures and the GB 39731-2020 national standard are met.

The invention belongs to the technical field of ships, and provides a CO2 cold energy recovery and utilization system based on a deep sea storage mode, which comprises a CO2 cold energy recovery system, a CO2 cold energy utilization system and an ethylene glycol loading and unloading system. The space of the corner of the ship is ingeniously utilized, ethylene glycol is directly stored in the space between the outer surface of the CO2 storage tank in the cargo hold of the ship and the wall of the cargo hold, when CO2 is sealed in the deep sea, cold energy is recycled through heat exchange between the ethylene glycol aqueous solution and CO2, the ethylene glycol aqueous solution obtained after heat exchange is transported to the land, and the CO2 is stored in the cargo hold of the ship. The cold energy is utilized in the process of liquefying CO2, so that the waste of the cold energy is avoided. Meanwhile, when the CO2 transport ship sails in a no-load mode, ethylene glycol serves as ballast water, the steps of filling and discharging the ballast water are omitted, the low-temperature ethylene glycol in the cabin enables the interior of the CO2 storage tank to be continuously kept at the low temperature, the CO2 storage tank does not need to be pre-cooled during follow-up CO2 filling, and the CO2 transport efficiency and the operation efficiency during ship berthing are greatly improved.

An apparatus and process for capturing carbon dioxide from exhaust output from at least one ship engine on the ship for storage of the carbon dioxide on the ship. The storage of the carbon dioxide on the ship can facilitate delivery of the captured carbon dioxide to a fuel production system at a port of destination or other port that the ship may arrive at to provide the captured carbon dioxide to the fuel production system. The fuel production system may then use the carbon dioxide to form a fuel (e.g. methane, methanol, etc.). The fuel that is produced can be provided to other ships at the port. The carbon capture system can utilize membranes, adsorption, and / or absorption for capturing the carbon dioxide. The carbon dioxide can be stored on the ship in at least one storage vessel of the ship.

The application discloses a natural gas hydrate exploitation and hydrate method CO2 storage test device and a test method thereof. The experimental device comprises a high-pressure reaction kettle, a rotating support system, a temperature control system, a data monitoring system, a gas-liquid collection system and an injection system. The rotating support system is connected with the high-pressure reaction kettle, so that the high-pressure reaction kettle can rotate by 360 degrees and be fixed after the high-pressure reaction kettle rotates to a predetermined angle. The temperature control system is used for providing a constant temperature environment for the high-pressure reaction kettle. The data monitoring system is used for monitoring data in the operation of the natural gas hydrate exploitation and hydrate method CO2 storage test device. The gas-liquid collection system is used for collecting gas and liquid in the high-pressure reaction kettle. The injection system is used for injecting substances required for tests into the high-pressure reaction kettle. The application has important significance for promoting commercialized exploitation of natural gas hydrate.

The application discloses a kind of complex coal measures strata double horizontal well cyclic injection CO2 vertical displacement coalbed gas mining method, belong to coalbed gas development technical field.Deep coal measures strata is selected as purpose layer, and two single branch horizontal wells are drilled in the same well group.One horizontal section is located at the top of purpose layer for coalbed gas extraction and fracturing;Another horizontal section is located at the bottom of purpose layer for injecting liquid CO2.Before extraction, by continuously injecting liquid CO2 into the bottom of purpose layer, the displacement and displacement effect of CO2 on CH4 are used to improve the recovery of deep coalbed gas;During extraction, part of CO2 is extracted with CH4, and the extracted CO2 is liquefied and recycled into the bottom of purpose layer through CO2 separation device;At the end of extraction, most of CH4 has been extracted, and the horizontal well is sealed to prevent CO2 from leaking, achieving the purpose of CO2 storage.The method is simple and easy to implement, and can be used for complex structure of purpose layer.

The utility model relates to the technical field of CO2 sealing and storage, and discloses a CO2 saline water layer sealing and storage experiment simulation device. Comprising a simulation chamber, the simulation chamber is in sealed connection with a CO2 conveying gas pipe, and an upper-layer partition plate and a lower-layer partition plate are arranged in the simulation chamber to form three cavities; vent holes are formed in the pipe walls, located at all the cavities, of the CO2 conveying gas pipe; each chamber is connected with a CO2 gas concentration sensor and a temperature sensor; a pressure sensor is further mounted at the top of the upper-layer chamber; each chamber is provided with a water inlet and a water outlet; a pressurizing opening is formed in the top side wall of the simulation chamber; a jacket layer is arranged on the outer wall of the simulation chamber, the upper-layer partition plate is of a hollow structure and is communicated with the jacket layer, the lower-layer partition plate is separated from the jacket layer, and an electric heating wire is arranged in the lower-layer partition plate; according to the utility model, the environment condition of each chamber can be adjusted for experiment; the problem that data measured by an existing simulation device is low in accuracy and reference is solved.

The application discloses a kind of oil reservoir gas drive fine delineation and gas channeling prevention and control method based on facies belt division.The method of the application can be used for the "fine" description of formation fluid migration in the process of CO2 injection development, through long core displacement, interface tension determination is combined, and well stream component is determined, the distribution of each facies zone in the ground is obtained through numerical simulation, accurate gas channeling early warning can be realized, and the starting pressure gradient at different development moments can be obtained in combination with the determined starting pressure gradient;The carbonized water is prepared by generating and breaking CO2 micro-bubbles in the application, and the enhanced CO2 micro-bubbles are generated by using the carbonized water and CO2, which can avoid the influence of water lock effect, improve the stability of micro-bubbles, better play the plugging and profile control effect, and improve the oil displacement efficiency, for the treatment of gas channeling, which is helpful to further improve the recovery efficiency and CO2 storage effect.

The invention belongs to the technical field of CO2 geological sequestration experiment evaluation in a CCUS-EOR project, and particularly relates to a carbon dioxide reservoir sequestration effect experiment comprehensive evaluation method. The method comprises the following steps: carrying out a carbon dioxide displacement saturated oil-water rock core experiment, simulating an actual oil reservoir CO2 injection and geological storage process, and calculating a storage evaluation index of CO2 in an experiment simulated oil reservoir on a rock core scale in combination with experimental test data; and quantitatively evaluating the carbon dioxide reservoir storage effect of the target reservoir under the corresponding working conditions by using the core scale CO2 storage index. The technical problem that a CO2 storage experiment method and a storage index quantitative evaluation method for oil reservoirs in the later stage of water flooding development are lacked at present is solved.

An apparatus and process for capturing carbon dioxide from exhaust output from at least one ship engine on the ship for storage of the carbon dioxide on the ship. The storage of the carbon dioxide on the ship can facilitate delivery of the captured carbon dioxide to a fuel production system at a port of destination or other port that the ship may arrive at to provide the captured carbon dioxide to the fuel production system. The fuel production system may then use the carbon dioxide to form a fuel (e.g. methane, methanol, etc.). The fuel that is produced can be provided to other ships at the port. The carbon capture system can utilize membranes, adsorption, and / or absorption for capturing the carbon dioxide. The carbon dioxide can be stored on the ship in at least one storage vessel of the ship.

The invention provides a direct-fired supercritical carbon dioxide semi-closed energy storage and oxygen recovery system and method. The direct-fired supercritical carbon dioxide semi-closed energy storage and oxygen recovery system comprises a carbon dioxide multi-stage intercooling compression unit, a liquid carbon dioxide storage device, a regenerative heating device, a combustion chamber, a turbine, a condensing device and a gaseous carbon dioxide storage device which are circularly connected. The direct-fired supercritical carbon dioxide semi-closed energy storage and oxygen recovery system further comprises an oxygen multi-stage intercooling compression unit connected with the regenerative heating device. And the liquid carbon dioxide storage device is connected with the oxygen multi-stage intercooling compression unit through an oxygen recovery bypass pipeline. According to the system, the excessive oxygen in the flue gas generated by the oxygen-enriched combustion chamber is recycled, the oxygen recycling difficulty is reduced, and the stability and flexibility of the system are improved.

The application discloses a kind of aircraft thermal management system and method based on chemical storage CO2 in technical field, including the storage tank for storing chemical reaction agent and the active thermal protection system being arranged in the head of aircraft;The storage tank is communicated with water body and the active thermal protection system respectively by water pipe and gas pipe, first throttle valve and second throttle valve are respectively arranged on the water pipe and the gas pipe;When the first throttle valve is opened, water can be injected into the storage tank to react with chemical reaction agent to release low-temperature CO2;When the second throttle valve is opened, the storage tank can deliver CO2 to the active thermal protection system;The active thermal protection system is used to accelerate the ejection of CO2, to form cooling gas film on the outer surface of aircraft, protect and cool aircraft.

This invention discloses a carbon dioxide-based data center cooling system, belonging to the field of data center thermal management technology. The system includes a cooling device, at least one storage tank, a coolant distribution unit, an inlet manifold, and an outlet manifold. The cryogenic liquid carbon dioxide produced by the cooling device is stored in the storage tank and transported to server racks within the data center via the distribution unit and pipelines to cool high-power AI chips. The cooled working fluid returns to the cooling device for recycling. The system provides two cooling implementation methods: one is direct cooling of the chips with liquid carbon dioxide; the other is indirect cooling through an independent carbon dioxide circulation loop formed by an intermediate heat exchanger. Furthermore, the system integrates a waste heat recovery unit, which can use the compression heat generated by the cooling device for power generation or district heating. This invention utilizes carbon dioxide as the working fluid to achieve efficient cooling and comprehensive energy utilization for data centers, offering advantages such as high energy efficiency and environmental friendliness.

The present application relates to a kind of full solid waste paste slow-release mineralization filling method, comprising: the gaseous carbon dioxide captured in industrial emission source is stored in the storage tank in the filling station industrial site, while polyvinyl alcohol film coiled material is stored in filling station warehouse, gaseous carbon dioxide is encapsulated with polyvinyl alcohol film coiled material to obtain soluble carbon dioxide capsule;Mine solid waste aggregate is mixed with solid waste base cementitious material to prepare full solid waste paste slurry, and soluble carbon dioxide capsule is mixed into full solid waste paste slurry;Full solid waste paste slurry mixed with soluble carbon dioxide capsule is transported from surface filling station pipeline into underground stope;The carbon dioxide capsule in it is dissolved and releases carbon dioxide after filling into stope, so that the purpose of mineralization carbon fixation is realized.The present application makes carbon dioxide controllable slow-release, makes it and cementitious material hydration product occur persistent and thorough mineralization reaction, and reaches excellent carbon fixation effect.

The application discloses a high-temperature calcium-based thermochemical energy storage system and an application method thereof. The system comprises a kettle reactor, a CO2 storage tank and an H2O storage tank. The kettle reactor is connected with the CO2 storage tank and the H2O storage tank through pipelines. The kettle reactor is internally provided with a stirring device, a solar heat collector and a heat exchanger. The solar heat collector is externally provided with an on-off heat insulation door. The kettle reactor is internally provided with CaCO3 materials. The system has the advantages of few devices, simple structure, low cost, low energy consumption and high stability. The system has the advantages of high energy storage reaction heat exchange efficiency and high reaction conversion rate. CO2 and H2O mixed gas is used as a heat transfer medium and a reactant, and the system has the advantages of high reaction temperature and small heat loss. H2O is added in the energy release reaction, the reaction speed is higher, the conversion rate is higher, and the system can be widely applied to the field of solar high-temperature power generation.

We provide a carbon dioxide storage system utilizing wind turbine equipment. [Solution] A carbon dioxide storage system comprising a cylindrical tower, a wind turbine device positioned on the tower, a carbon dioxide separation and recovery device driven by the rotational shaft power obtained from the wind turbine device to separate and recover carbon dioxide from gas drawn in through an opening in the tower, a carbon dioxide gas compressor driven by the rotational shaft power obtained from the wind turbine device to compress the carbon dioxide gas separated and recovered by the carbon dioxide separation and recovery device, an injection pump driven by the rotational shaft power obtained from the wind turbine device to pump the compressed carbon dioxide into an underground carbon dioxide storage tank, and an injection well for injecting and storing the carbon dioxide separated and recovered from the gas into the underground carbon dioxide storage tank, wherein the carbon dioxide separation and recovery device, the carbon dioxide gas compressor, and the injection pump are located inside the cylinder of the tower.

The invention provides an expandable CO2 energy storage and power generation integrated system and method based on a multi-layer horizontal well, and relates to the technical field of energy and environment, the system comprises a well network structure composed of at least one U-shaped well pair, the U-shaped well pair comprises a first well and a second well, the horizontal well is used as an injection well in an injection mode, is used as a production well in a power generation mode, and is communicated with a top horizontal well and a bottom horizontal well in the multi-layer shale oil reservoir respectively; the electric drive compressor, the coiled tubing, the control valve, the turbine generator and the gas-liquid separation device form a ground circulation loop. The method comprises the following steps: compressing gaseous CO2 into a supercritical liquid state to be injected into a reservoir in a low ebb of power utilization, so as to realize electric energy storage, fracturing yield increase and CO2 storage; and during the peak period of power utilization, the high-pressure mixed fluid in the reservoir is extracted to drive the turbine generator to generate power, and the separated CO2 is recycled. Integrated cooperation of power grid peak regulation, crude oil yield increase and carbon dioxide geological sequestration is achieved.

The invention discloses a coal mine CO2 cooling fire prevention and extinguishing simulation experiment device, and particularly relates to the technical field of coal mines, the coal mine CO2 cooling fire prevention and extinguishing simulation experiment device comprises a liquid CO2 storage tank, a constant temperature box, a sample tank, a lifting platform, a state outlet piece, a state changing piece, an exhaust valve, a flowmeter body, a pressure sensor body, an acquisition card, a temperature transmitter and a computer; the constant-temperature box is arranged on one side of the liquid CO2 storage tank; the sample tank is arranged in the constant temperature box; a state outlet piece and a state changing piece are respectively arranged on the connecting pipe A; the exhaust valve is connected with the sample tank through a connecting pipe B, and one end of the connecting pipe B is connected with a flowmeter body; the pressure sensor body is connected with the sample tank; the acquisition card is connected with the sample tank through a connecting line A, and a temperature transmitter is arranged on the connecting line A; the computer is connected with the acquisition card through a connecting line C; the experimental device is reasonable in structural design, can conveniently simulate that technical measures are taken for experiments under the condition that the temperature of a coal body rises, and not only can carry out liquid CO2 cooling simulation experiments, but also can carry out low-temperature CO2 cooling simulation experiments.