A carbon dioxide energy storage method coupled with wind and solar power generation

Abstract

The present invention uses carbon dioxide as a circulating energy storage medium and combines it with wind and solar power generation technology to construct a new energy storage method coupled with wind and solar power generation energy. The method includes a wind and solar power generation component, a carbon dioxide energy storage component, and a heat storage component. The wind and solar power generation component includes a windmill, a first generator, a solar panel, and a first battery. The windmill drives the first generator to generate electricity under the blowing of wind through the fan blades installed thereon, and the solar panel absorbs sunlight to generate electricity. The electricity generated by the first generator and the solar panel is converted and stored in the first battery through a controller. The carbon dioxide energy storage component includes a storage box and a turbine. The storage box is used to store carbon dioxide collected by the carbon dioxide collection component, and the turbine realizes thermoelectric energy storage conversion through the phase change of carbon dioxide. Since the method adopts wind and solar power generation technology and carbon dioxide thermoelectric energy storage technology, it has the characteristics of natural environmental protection, high energy storage density and low investment cost, and has broad development and application prospects.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide energy storage technology, and in particular to a carbon dioxide energy storage method coupled with wind and solar power generation energy. Background Art

[0002] Energy and electricity will develop rapidly in the future, requiring thermal power units to further tap the potential for peak load regulation on the current basis, and large-scale grid connection of renewable energy with volatility and intermittency characteristics, which puts forward higher requirements for the peak load reduction and valley filling of the power grid and the safe and stable operation level. Building large-scale energy storage devices and improving the flexibility and safety of power system operation are effective ways to solve the problem of high-proportion consumption of new energy.

[0003] After searching, the invention patent with Chinese publication number CN114934825B discloses a carbon dioxide energy storage system coupled with a coal-fired power unit, which includes a coal-fired power unit device, a carbon dioxide energy storage device and a carbon dioxide energy release device. The carbon dioxide energy storage power generation system coupled with the coal-fired power unit of the present invention, through the coupling of the coal-fired power unit and the carbon dioxide energy storage system, on the one hand, improves the operating flexibility of the coal-fired power unit, on the other hand, improves the operating efficiency of the carbon dioxide energy storage system, and also avoids the configuration of the heat storage device and the heat source device required for the installation of an independent energy storage system, reduces the investment in the energy storage system, and simplifies the setting system.

[0004] Although the above technical solution solves the problem of reducing the investment in the energy storage system and simplifies the problem of setting up the system, in the above technical solution, the use of coal-fired power units for power generation will produce a lot of sulfides, sulfur dioxide, etc., which can easily cause air pollution. In addition, coal is a non-renewable resource and cannot support large-scale and long-term use. Therefore, a carbon dioxide energy storage method coupled with wind and solar power generation energy is needed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a carbon dioxide energy storage method coupled with wind and solar power generation energy, which solves the technical problem of environmental pollution caused by coal-fired power generation units when generating electricity.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] A carbon dioxide energy storage method coupled with wind and solar power generation energy proposed in an embodiment of the present invention includes a wind and solar power generation component, a carbon dioxide energy storage component, a first compression component, a first cooling component, a second cooling component, a carbon dioxide collection component, and a heat storage component;

[0010] The wind-solar power generation assembly includes a windmill, a first generator, a solar panel, a first storage battery, and a controller;

[0011] The windmill drives the first generator to generate electricity through the fan blades installed thereon under the blowing of wind;

[0012] The solar panel generates electricity by absorbing sunlight;

[0013] The electric energy generated by the first generator and the solar panel is stored in the first storage battery through a controller;

[0014] The carbon dioxide energy storage assembly includes a storage tank and a turbine;

[0015] The storage tank is used to store the carbon dioxide collected by the carbon dioxide collection component;

[0016] The turbine is used to convert the internal energy of the liquid carbon dioxide into electrical energy by releasing it;

[0017] The heat storage assembly includes a first storage barrel, a second storage barrel, a heating device and a delivery pipeline;

[0018] The first storage tank is used to store a medium that absorbs heat generated when carbon dioxide is liquefied, such as hot water;

[0019] The second storage barrel is used to store a low-temperature medium, such as ice slurry, which is composed of sodium chloride and water;

[0020] The heating device is used to heat the low-temperature medium stored in the second storage barrel;

[0021] The transmission pipeline is used to transfer energy using carbon dioxide as a circulating working fluid, thereby basically realizing carbon dioxide storage coupled with wind and solar power generation energy.

[0022] Optionally, the first compression assembly comprises a plurality of piston compressors;

[0023] The piston compressor is used to further compress the molecular structure of gaseous carbon dioxide to assist in the subsequent liquefaction of carbon dioxide.

[0024] Optionally, the first cooling assembly includes a cooling barrel and a cooling pipe;

[0025] The cooling barrel is used to contain low-temperature coolant, which is ice, and the ice slurry is composed of sodium chloride and water;

[0026] The cooling pipe is used to reduce the temperature during the carbon dioxide liquefaction process to assist the carbon dioxide liquefaction.

[0027] Optionally, the carbon dioxide collection device includes a carbon dioxide collector, a high-pressure gas cylinder and a transportation pipeline;

[0028] The carbon dioxide collector is used to collect carbon dioxide in the atmosphere;

[0029] The high-pressure gas cylinder is used to collect carbon dioxide collected by the carbon dioxide collector;

[0030] The transport pipeline is used to transport the carbon dioxide in the high-pressure gas cylinder to the carbon dioxide energy storage component, so as to collect the carbon dioxide free in the air.

[0031] Optionally, the second cooling assembly includes a sandwich frame, an output pipe and an input pipe;

[0032] The function of the sandwich frame is to carry the low-temperature medium, the low-temperature cooling liquid is ice, and the ice slurry is composed of sodium chloride and water;

[0033] The output pipeline and the input pipeline are used to maintain the temperature of the carbon dioxide energy storage component by allowing low-temperature medium to enter and exit.

[0034] Optionally, the carbon dioxide energy storage device utilizes the rapid expansion characteristics of carbon dioxide from liquid to gas to store energy. When there is a surplus of electricity produced by wind and solar power generation, this surplus electricity is used to compress the carbon dioxide gas at normal temperature and pressure into liquid, and the heat energy generated during the compression process is stored.

[0035] Optionally, when the electricity generated by wind and solar power is in short supply, the heat storage component heats liquid carbon dioxide to convert it into gas and drives a turbine to generate electricity to meet the demand.

[0036] Optionally, the turbine is a machine that converts the energy contained in a fluid medium into mechanical energy. Its working principle mainly includes three processes: compression, heating and expansion. The working fluid of the turbine is gas or liquid. The turbine using water as the working fluid is called a water turbine, the turbine using steam as the working fluid is called a steam turbine, and the turbine using fuel gas as the working fluid is called a gas engine. The gas engine is a steam turbine, and when liquid carbon dioxide is converted into gas, it drives the steam turbine to generate electricity.

[0037] Optionally, the carbon dioxide collector adopts a physical adsorption method, utilizing the affinity of a solid adsorbent to carbon dioxide to directly collect carbon dioxide free in the air.

[0038] (III) Beneficial effects

[0039] The beneficial effects of the present invention are as follows: the carbon dioxide energy storage method coupled with wind and solar power generation energy of the present invention adopts wind and solar power generation technology and carbon dioxide thermal power storage technology, has the characteristics of natural environmental protection, high energy storage density and low investment cost, and has broad development and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the process of converting electric energy into internal energy according to the present invention;

[0041] Figure 2 It is a schematic diagram of the process of converting internal energy into electrical energy according to the present invention. DETAILED DESCRIPTION

[0042] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Wherein, the directional terms such as "upper", "lower" and so on mentioned herein are based on the orientation of Figure X.

[0043] The windmill proposed in the embodiment of the present invention rotates its blades through wind, driving the first generator to generate electricity. At the same time, the solar panel absorbs solar energy and converts it into electrical energy, which is then transmitted to the first storage battery for subsequent use.

[0044] When there is surplus electricity in the first storage battery, the carbon dioxide collector is first started to collect carbon dioxide in the atmosphere, and the collected carbon dioxide is transported to the storage box through the transportation pipeline. Then the piston compressor is started. The piston compressor starts to reduce the molecular gaps between the carbon dioxide in the storage barrel to facilitate subsequent conversion. Then the low-temperature medium is transported to the second storage barrel to reduce the temperature of the compressed carbon dioxide and liquefy it, converting the surplus electrical energy into the internal energy of the carbon dioxide. At the same time, the heat generated when the carbon dioxide is liquefied is transported to the first storage barrel through the water in the transportation pipeline. Then the heating device is started to heat the low-temperature medium stored in the second storage barrel and absorb the heat in the water.

[0045] When the internal energy in the carbon dioxide needs to be released, the heat stored in the cryogenic medium is released to heat the liquid carbon dioxide, converting the liquid carbon dioxide into a gas, which is then generated through a turbine and transmitted to the first storage battery for external use.

[0046] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0047] Specific implementation example description section.

[0048] Embodiment 1:

[0049] Reference Figure 1 and Figure 2, including a wind-solar power generation component, a carbon dioxide energy storage component, a first compression component, a first cooling component, a first cooling component, a carbon dioxide collection component, and a heat storage component. The function of the wind-solar power generation component is to generate electricity through wind and solar energy to avoid pollution to the environment. The function of the carbon dioxide energy storage component is to store carbon dioxide and cooperate with the first compression component and the first cooling component to convert electrical energy into carbon dioxide internal energy storage. The function of the carbon dioxide collection device is to collect carbon dioxide in the atmosphere. The function of the thermal energy storage device is to absorb the heat generated during the liquefaction of carbon dioxide, which is used to heat carbon dioxide when releasing the internal energy of carbon dioxide to assist its release;

[0050] The wind-solar power generation assembly includes a windmill, a first generator, a solar panel, a first storage battery, and a controller. The windmill drives the first generator to generate electricity through the fan blades installed thereon under the blowing of wind, and the solar panel generates electricity by absorbing sunlight. The electric energy generated by the first generator and the solar panel is stored in the first storage battery through the controller;

[0051] The carbon dioxide energy storage component includes a storage tank and a turbine, wherein the storage tank is used to store the carbon dioxide collected by the carbon dioxide collection component, and the turbine is used to convert the internal energy in the liquid carbon dioxide into electrical energy by releasing it;

[0052] The heat storage component includes a first storage barrel, a second storage barrel, a heating device and a delivery pipeline. The first storage barrel is used to store a medium that absorbs the heat generated when carbon dioxide is liquefied, such as hot water. The material of the first storage barrel is tungsten carbide, which is an inorganic material composed of carbon and tungsten elements. It has the characteristics of high hardness, high wear resistance and high chemical stability. It is a high-strength heat-resistant material that can withstand high temperature, oxidation and corrosion. The second storage barrel is used to store a low-temperature medium, which is an ice slurry composed of sodium chloride and water. The material used in the second storage barrel is 304 stainless steel. The heating device is used to heat the low-temperature medium stored in the second storage barrel, so as to convert the heat absorbed by the water in the delivery pipeline for storage. The heating device is a common metal conductor heater on the market, which makes electric current pass through the metal conductor to generate heat to produce a heating effect. It has the advantages of high efficiency, energy saving and environmental protection, and can meet the requirements of different processes for heating speed and temperature control. The delivery pipeline is used to transfer the energy of carbon dioxide as a circulating working fluid, and absorbs the heat generated when carbon dioxide is liquefied through the stored water;

[0053] The storage box includes an inner liner and an outer shell. The inner liner is made of stainless steel and aluminum alloy. Stainless steel has good corrosion resistance and mechanical properties and is one of the main materials for the inner liner of a carbon dioxide storage tank. Aluminum alloy has lighter weight and better thermal conductivity, making the storage tank more portable and easy to use. The outer shell is made of galvanized sheet, which is a low-cost shell material with good corrosion resistance and rust resistance.

[0054] Embodiment 2:

[0055] Reference Figure 1 and Figure 2 The first compression component includes a plurality of piston compressors, which are used to further compress the molecular structure of gaseous carbon dioxide. The piston compressor combines the physical properties of carbon dioxide itself to further compress the molecular structure of gaseous carbon dioxide and assist in the subsequent liquefaction of carbon dioxide. The piston compressor is a positive displacement compressor, which relies on the reciprocating motion of the piston in the cylinder to pressurize and transport the gas. It is mainly composed of a working chamber, a transmission component, a fuselage and auxiliary components. The working chamber is directly used to compress the gas. It is composed of a cylinder, a cylinder liner, a valve, a filler, a piston and a piston rod. The piston rod drives the piston to reciprocate in the cylinder. The volume of the working chamber on both sides of the piston will change in opposite directions in turn. The gas on the side with reduced volume is discharged through the valve due to increased pressure, and the gas on the side with increased volume is sucked in through the valve due to reduced pressure. It has a wide range of applicable pressures, high thermal efficiency, strong adaptability, strong maintainability, low material requirements and mature technology.

[0056] Embodiment 3:

[0057] Reference Figure 1 and Figure 2 The first cooling component includes a cooling barrel and a cooling pipe. The cooling barrel is used to hold a low-temperature coolant, such as ice slurry, which is composed of sodium chloride and water. The cooling pipe is used to reduce the temperature during the liquefaction process of carbon dioxide. The present invention uses a long-lasting coolant, to which a rust inhibitor is added, which can avoid excessive corrosion of the metal and extend the life of the cooling device. At the same time, antifreeze ingredients are added to prevent the coolant from freezing at low temperatures, mainly playing an antifreeze role. The material of the cooling barrel used in the present invention is 304 stainless steel, which has high corrosion resistance and strength, and can ensure that the cooling barrel is not easily corroded and damaged during long-term use. The cooling pipe used in the present invention is a galvanized alloy, to which steel and aluminum are added, which has good corrosion resistance and wear resistance, as well as good thermal conductivity.

[0058] Embodiment 4:

[0059] Reference Figure 1 and Figure 2The carbon dioxide collection device includes a carbon dioxide collector, a high-pressure gas cylinder and a transportation pipeline. The carbon dioxide collector is used to collect carbon dioxide in the atmosphere, the high-pressure gas cylinder is used to collect the carbon dioxide collected by the carbon dioxide collector, and the transportation pipeline is used to transport the carbon dioxide in the high-pressure gas cylinder to the carbon dioxide energy storage component to facilitate subsequent electric energy conversion. The high-pressure gas cylinder is a gas cylinder with a working pressure equal to or greater than 8MPa, which is used to hold various gases. The high-pressure gas cylinder used in the present invention is an alloy composed of alloy elements such as steel, aluminum, copper, and magnesium, which has high strength, long service life, good impact resistance, and corrosion resistance. The transportation pipeline uses a stainless steel pipe, which has extremely high corrosion resistance, strength and pressure resistance, is easy to operate and has a long service life.

[0060] Embodiment 5:

[0061] The second cooling component includes a sandwich frame, an output pipe and an input pipe. The function of the sandwich frame is to carry the low-temperature medium, which is ice slurry composed of sodium chloride and water. The function of the output pipe and the input pipe is to maintain the temperature of the carbon dioxide energy storage component by allowing the low-temperature medium to enter and exit. The sandwich frame is also made of 304 stainless steel. The output pipe is made of the same material as the input pipe, both of which are made of galvanized alloy.

[0062] Embodiment 6:

[0063] The carbon dioxide energy storage device uses the rapid expansion characteristics of carbon dioxide from liquid to gas to store energy. When there is a surplus of electricity produced by wind and solar power generation, this surplus electricity is used to compress the carbon dioxide gas at normal temperature and pressure into liquid, and store the heat energy generated during the compression process.

[0064] Embodiment 7:

[0065] The heat storage component, when the electricity generated by wind and solar power is in short supply, heats the liquid carbon dioxide to turn it into gas and drives the turbine to generate electricity to meet the demand, which helps to achieve balanced utilization of energy, improve energy utilization efficiency and reduce energy costs. The present invention uses sensible heat storage technology, which stores thermal energy by heating to increase the temperature and releases thermal energy by cooling when needed.

[0066] Embodiment 8:

[0067] A turbine is a machine that converts the energy contained in a fluid medium into mechanical energy. Its working principle mainly includes three processes: compression, heating and expansion. The working fluid of a turbine is gas or liquid. A turbine with water as the working fluid is called a water turbine, a turbine with steam as the working fluid is called a steam turbine, and a gas turbine with gas as the working fluid is called a gas engine. The gas engine is a turbine. When liquid carbon dioxide changes to gas, it drives the steam turbine to generate electricity. The main components of the turbine, such as the rotor or impeller, and the turbine shaft, are usually made of high-strength, high-corrosion-resistant alloy steel. The alloy steel can withstand the mechanical stress caused by high-speed rotation and fluid impact, as well as chemical corrosion in the working environment. The casing of the turbine is usually made of steel. Steel has high strength, good corrosion resistance and excellent processing performance, which can meet the various needs of the turbine casing during operation.

[0068] Embodiment 9:

[0069] The carbon dioxide collector adopts physical adsorption method, using the affinity of solid adsorbent to carbon dioxide to directly collect carbon dioxide free in the air. The carbon dioxide shell is made of aluminum alloy mixed engineering plastics. The shell of aluminum alloy mixed engineering plastics has good structural strength and impact resistance, while engineering plastics are light, corrosion-resistant and easy to process. The carbon dioxide sensor is the core component of the collector. The sensor is made of metal oxide to achieve sensitive and accurate detection of carbon dioxide gas.

[0070] Embodiment 10:

[0071] The solid adsorbent is sodium zirconium zeolite, which is an organic silicon framework material with a high carbon dioxide adsorption capacity. Sodium zirconium zeolite is a natural aluminosilicate zeolite. The sodium zirconium zeolite has a uniform pore size at the nanoscale and can form interconnected channels and a network structure, which has a screening and adsorption effect on carbon dioxide molecules.

[0072] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0075] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A carbon dioxide energy storage method coupled with wind and solar power generation energy, characterized in that: It includes a wind and solar power generation component, a carbon dioxide energy storage component, a first compression component, a first cooling component, a second cooling component, a carbon dioxide collection component, and a heat storage component; The wind-solar power generation assembly includes a windmill, a first generator, a solar panel, a first storage battery, and a controller; The windmill drives the first generator to generate electricity through the fan blades installed thereon under the blowing of wind; The solar panel generates electricity by absorbing sunlight; The electric energy generated by the first generator and the solar panel is stored in the first storage battery through a controller; The carbon dioxide energy storage assembly includes a storage tank and a turbine; The storage tank is used to store the carbon dioxide collected by the carbon dioxide collection component; The turbine is used to convert the internal energy of the liquid carbon dioxide into electrical energy by releasing it; The heat storage assembly includes a first storage barrel, a second storage barrel, a heating device and a delivery pipeline; The first storage tank is used to store the medium that absorbs the heat generated when the carbon dioxide is liquefied; The second storage barrel is used to store a low-temperature medium, which is an ice slurry consisting of sodium chloride and water; The heating device is used to heat the low-temperature medium stored in the second storage barrel; The delivery pipeline is used for energy transfer using carbon dioxide as a circulating working fluid.

2. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 1, characterized in that: The first compression assembly includes a plurality of piston compressors; The piston compressor combines the physical properties of carbon dioxide itself to further compress the molecular structure of gaseous carbon dioxide and assist in the subsequent liquefaction of carbon dioxide.

3. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 2, characterized in that: The first cooling assembly includes a cooling barrel and a cooling pipe; The cooling barrel is used to contain low-temperature coolant, which is ice slurry, and the ice slurry is composed of sodium chloride and water; The cooling pipe is used to reduce the temperature during the carbon dioxide liquefaction process.

4. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 3 is characterized in that: The carbon dioxide collection device comprises a carbon dioxide collector, a high-pressure gas cylinder and a transportation pipeline; The carbon dioxide collector is used to collect carbon dioxide in the atmosphere; The high-pressure gas cylinder is used to collect carbon dioxide collected by the carbon dioxide collector; The transport pipeline is used to transport the carbon dioxide in the high-pressure gas cylinder to the carbon dioxide energy storage assembly.

5. A method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 4, characterized in that: The second cooling assembly includes a sandwich frame, an output pipe and an input pipe; The function of the sandwich frame is to carry a low-temperature medium, which is ice slurry, which is composed of sodium chloride and water; The output pipeline and the input pipeline are used to maintain the temperature of the carbon dioxide energy storage component by allowing low-temperature medium to enter and exit.

6. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 1, characterized in that: The carbon dioxide energy storage device utilizes the rapid expansion characteristics of carbon dioxide from liquid to gas to store energy. When there is a surplus of electricity produced by wind and solar power generation, this surplus electricity is used to compress the carbon dioxide gas at normal temperature and pressure into liquid, and the heat energy generated during the compression process is stored.

7. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 1, characterized in that: When the electricity generated by wind and solar power is in short supply, the heat storage component heats liquid carbon dioxide to convert it into gas, and drives a turbine to generate electricity to meet the demand.

8. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 1, characterized in that: The turbine is a machine that converts the energy contained in a fluid medium into mechanical energy. Its working principle includes three processes: compression, heating and expansion. The working fluid of the turbine is gas or liquid. The turbine using water as the working fluid is called a water turbine, the turbine using steam as the working fluid is called a steam turbine, and the turbine using fuel gas as the working fluid is called a gas engine. The gas engine is a steam turbine, and when liquid carbon dioxide is converted into gas, it drives the steam turbine to generate electricity.

9. The method for storing carbon dioxide energy coupled with wind and solar power generation according to claim 4, characterized in that: The carbon dioxide collector adopts a physical adsorption method and utilizes the affinity of a solid adsorbent to carbon dioxide to directly collect carbon dioxide free in the air.

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