Energy supply system based on carbon dioxide energy storage and release and breeding system

Abstract

The application discloses an energy supply system and a breeding system based on carbon dioxide energy storage and release, and the energy supply system based on carbon dioxide energy storage and release comprises a carbon dioxide storage system, a carbon dioxide energy storage and release system in communication with the carbon dioxide storage system, and the carbon dioxide energy storage and release system is adapted to be connected to a power transmission network of a new energy power generation system, and the carbon dioxide energy storage and release system comprises, in series, a carbon dioxide preheater, a main compressor, a carbon dioxide heat recovery heat exchanger, a carbon dioxide high-pressure storage tank, a carbon dioxide generator, a turbine and a carbon dioxide waste heat absorber, and the inlet and outlet of the carbon dioxide storage system are in communication with the carbon dioxide waste heat absorber and the carbon dioxide preheater through pipelines respectively, and the carbon dioxide high-pressure storage tank is adapted to store liquid or supercritical state carbon dioxide. When the carbon dioxide energy storage and release system stores energy, excessive new energy power generation can be consumed, and when the carbon dioxide energy storage and release system releases energy, new energy power generation can be matched to ensure power supply stability.

Description

Technical Field

[0001] This invention relates to the field of energy supply system technology, specifically to an energy supply system and aquaculture system based on carbon dioxide storage and energy release. Background Technology

[0002] Currently, isolated energy supply methods are lacking, while renewable energy power supply is unstable and cannot provide users with a stable power source. Furthermore, while floating foundations are maturing and deep-sea renewable energy development is becoming a new growth point, the instability of renewable energy sources limits its development.

[0003] Therefore, it is necessary to design an energy supply system based on carbon dioxide energy storage and release. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the power supply of new energy sources is unstable and cannot provide a stable power source, thereby providing an energy supply system based on carbon dioxide energy storage and release.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] An energy supply system based on carbon dioxide energy storage and release includes:

[0007] Carbon dioxide storage system, suitable for installation on the seabed;

[0008] A carbon dioxide energy storage and release system is connected to the carbon dioxide gas storage system via a gas storage pipeline. The carbon dioxide energy storage and release system is suitable for installation on the sea surface and for connection to the power grid of a new energy power generation system. The carbon dioxide energy storage and release system includes a carbon dioxide preheater, a main compressor, a carbon dioxide heat recovery heat exchanger, a carbon dioxide high-pressure storage tank, a carbon dioxide generator, a turbine, and a carbon dioxide waste heat absorber connected in series. The gas inlet and gas outlet of the carbon dioxide gas storage system are respectively connected to the outlet of the carbon dioxide waste heat absorber and the inlet of the carbon dioxide preheater via pipelines. The carbon dioxide high-pressure storage tank is suitable for storing liquid or supercritical carbon dioxide.

[0009] Furthermore, it also includes a generator connected to the turbine, the electricity generated by the generator being connected to the power grid.

[0010] Furthermore, it also includes a first cryogenic storage tank and a first high-temperature storage tank. The two ends of the first high-temperature storage tank are respectively connected to the carbon dioxide heat recovery heat exchanger and the carbon dioxide generator through a first pipeline. The two ends of the first cryogenic storage tank are respectively connected to the carbon dioxide heat recovery heat exchanger and the carbon dioxide generator through a second pipeline.

[0011] Furthermore, it also includes a No. 1 circulation pump and a No. 2 circulation pump. The No. 1 circulation pump is located on the first pipeline between the carbon dioxide heat recovery heat exchanger and the first high-temperature storage tank, and the No. 2 circulation pump is located on the second pipeline between the carbon dioxide generator and the first low-temperature storage tank.

[0012] Furthermore, it also includes a second cryogenic storage tank and a second high-temperature storage tank connected in series. The inlet of the second cryogenic storage tank is connected to the outlet of the carbon dioxide preheater through a third pipeline, and the outlet of the second high-temperature storage tank is connected to the inlet of the carbon dioxide preheater through a fourth pipeline.

[0013] Furthermore, a third circulation pump is installed on the third pipeline.

[0014] Furthermore, it also includes a carbon dioxide range extender heat exchanger and an auxiliary compressor. The carbon dioxide range extender heat exchanger is located on the fifth pipeline between the second low-temperature storage tank and the second high-temperature storage tank. The carbon dioxide waste heat absorber, the auxiliary compressor, and the carbon dioxide range extender heat exchanger are connected in series to form a closed loop. A throttling valve or an auxiliary turbine is provided on the sixth pipeline between the carbon dioxide range extender heat exchanger and the carbon dioxide waste heat absorber.

[0015] Furthermore, it also includes a floating base, on which the carbon dioxide energy storage and release system is placed.

[0016] Furthermore, the carbon dioxide storage system is a constant pressure storage system.

[0017] Furthermore, the carbon dioxide storage system includes a base and a storage tank body fixed on the base.

[0018] Furthermore, there are at least two storage tank bodies, and at least two storage tank bodies are connected in series via a series pipeline.

[0019] Furthermore, a second shut-off valve is provided on the series pipeline, and at least two of the storage tank bodies include a first-stage storage tank body and a last-stage storage tank body. The last-stage storage tank body is provided with inlet and outlet water pipelines, and a first shut-off valve is provided on the inlet and outlet water pipelines.

[0020] Furthermore, the main body of the storage tank is adapted to be connected to the sea, and the main body of the storage tank is a precast concrete structure.

[0021] The technical solution of this invention has the following advantages:

[0022] 1. The energy supply system based on carbon dioxide energy storage and release provided by the present invention can consume excess new energy power generation through the energy storage process of the carbon dioxide energy storage and release system, and can also provide external power through the energy release process of the carbon dioxide energy storage and release system to make up for the deficiency of new energy power generation, thereby ensuring the power supply stability of the energy supply system.

[0023] 2. The energy supply system based on carbon dioxide energy storage and release provided by the present invention has a storage tank body connected to the sea and the internal and external pressures of the storage tank body are consistent. Therefore, the storage tank body can be a spherical or tubular precast cement structure, which can greatly reduce the amount of material used in the storage tank body.

[0024] 3. The energy supply system based on carbon dioxide energy storage and release provided by the present invention also includes a carbon dioxide range extender heat exchanger and an auxiliary compressor. The carbon dioxide range extender heat exchanger is installed on the fifth pipeline between the second low-temperature storage tank and the second high-temperature storage tank. The carbon dioxide waste heat absorber, the auxiliary compressor, and the carbon dioxide range extender heat exchanger are connected in series. A throttling valve or an auxiliary turbine is provided on the sixth pipeline between the carbon dioxide range extender heat exchanger and the carbon dioxide waste heat absorber. In this way, high-pressure carbon dioxide can drive the turbine to rotate, thereby driving the generator to generate electricity. The waste heat in the discharged carbon dioxide can be stored in the second high-temperature storage tank for preheating the carbon dioxide from the carbon dioxide storage system.

[0025] An aquaculture system, based on the aforementioned energy supply system based on carbon dioxide energy storage and release, is characterized by comprising:

[0026] Float connection frame;

[0027] Multiple floating structures are connected to the float connecting frame;

[0028] The aquaculture structure is connected to the floating structure.

[0029] Furthermore, the aquaculture system is supplied with carbon dioxide by the carbon dioxide storage system.

[0030] Furthermore, the aquaculture structure is suitable for cultivating algae and shellfish.

[0031] The technical solution of this invention has the following advantages:

[0032] The aquaculture system provided by this invention uses an energy supply system based on carbon dioxide storage and release to provide carbon dioxide to the aquaculture system, which can achieve biological carbon sequestration and realize carbon dioxide consumption in a low-cost and green and environmentally friendly way. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the combination of the energy supply system and the aquaculture system based on carbon dioxide energy storage and release according to the present invention;

[0035] Figure 2 This is a schematic diagram of the energy supply system based on carbon dioxide energy storage and release in this invention.

[0036] Figure 3 This is a schematic diagram of the carbon dioxide storage system in this invention;

[0037] Figure 4 This is a schematic diagram of the aquaculture system in this invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Sea surface; 2. Seabed; 3. Wind turbine; 4. Floating foundation; 5. Carbon dioxide energy storage and release system; 501. First high-temperature storage tank; 502. First low-temperature storage tank; 503. Second low-temperature storage tank; 504. Second high-temperature storage tank; 505. Carbon dioxide heat recovery heat exchanger; 506. Carbon dioxide generator; 507. Carbon dioxide range extender heat exchanger; 508. Carbon dioxide waste heat absorber; 509. Carbon dioxide preheater; 510. High-pressure carbon dioxide storage tank; 511. Main compressor; 512. Turbine; 513. Auxiliary compressor; 514. Throttling valve; 515. Circulation pump No. 5; Circulation pump No. 3; Circulation pump No. 2; Circulation pump No. 1; 6. Float connecting frame; 7. Floating structure; 8. Gas storage pipeline; 9. Carbon dioxide gas storage system; 901. Tank body; 902. Base; 903. Series pipeline; 904. Inlet and outlet; 905. Inlet and outlet pipes; 906. First shut-off valve; 907. Second shut-off valve; 10. Aquaculture system; 1001. Algae; 1002. Shellfish; a. First pipeline; b. Second pipeline; c. Third pipeline; d. Fourth pipeline; e. Fifth pipeline; f. Sixth pipeline. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] like Figures 1 to 4 As shown in the figure, this embodiment presents an energy supply system based on carbon dioxide energy storage and release, which provides carbon dioxide to the aquaculture system.

[0045] The aquaculture system 10 includes a float connecting frame 6, multiple floating structures 7, and an aquaculture structure. The multiple floating structures 7 are all connected to the float connecting frame 6. The aquaculture structure is connected to the floating structures 7. The aquaculture structure is used to cultivate algae 1001 and shellfish 1002, with the algae 1001 closer to the sea surface 1 than the shellfish 1002.

[0046] Energy supply systems based on carbon dioxide storage and energy release include carbon dioxide gas storage system 9 and carbon dioxide energy storage and energy release system 5.

[0047] A carbon dioxide storage system 9 is located on the seabed 2. The carbon dioxide storage system 9 is connected to a carbon dioxide energy storage and release system 5 via a flexible storage pipeline 8. The carbon dioxide storage system 9 includes a base 902 and a storage tank body 901 fixed on the base 902.

[0048] exist Figure 1 and Figure 3 The diagram shows two main tank bodies 901; however, there can be one, three, or even more main tank bodies 901, without specific limitations, depending on actual needs. A second shut-off valve 907 is installed on the series pipeline 903 between adjacent main tank bodies 901. When there are two or three main tank bodies 901, at least two main tank bodies 901 must include a first-stage tank body and a final-stage tank body. Inlet and outlet water pipes 905 are installed on the final-stage tank body, and a first shut-off valve 906 is installed on the inlet and outlet water pipes 905. Furthermore, it should be noted that the main tank body 901 is connected to seawater, ensuring consistent internal and external pressure. Therefore, the main tank body 901 can be a precast concrete structure, which greatly reduces the amount of material used. The main tank body 901 can be spherical or tubular. When the main tank body 901 is spherical, its diameter is approximately 1 kilometer. Furthermore, since the main body of the storage tank 901 is connected to seawater, the carbon dioxide inside the main body of the storage tank 901 will exchange mass with the seawater, and part of the carbon dioxide will dissolve in the seawater, providing carbon dioxide for the aquaculture system 10.

[0049] When the carbon dioxide energy storage and release system 5 is storing energy, the second shut-off valve 907 opens, and the carbon dioxide is squeezed by the seawater and flows from the first-stage carbon dioxide storage system 9 into the carbon dioxide energy storage and release system 5 along the storage pipe 8. In order to control the carbon dioxide content in the seawater, the second shut-off valve 907 needs to be closed when the energy storage ends. When the carbon dioxide energy storage and release system 5 is releasing energy, the seawater is discharged from the bottom of the first-stage storage tank body into the next-stage storage tank body 901. Excess seawater is discharged into the sea through the inlet and outlet pipes 905 and the inlet and outlet ports 904. Since a small amount of carbon dioxide dissolves in seawater, the "rich" carbon dioxide seawater discharged from the inlet and outlet ports 904 is discharged to the area near the aquaculture system 10 to provide nutrients for aquaculture.

[0050] The carbon dioxide energy storage and release system 5 is placed on a floating foundation 4, located on the sea surface 1. The electricity generated by the carbon dioxide energy storage and release system 5 is fed into a renewable energy generation system (such as...). Figure 1The wind turbine 3 in the system generates electricity (and can also be used for other forms of renewable energy generation) and is connected to the power grid. When renewable energy generates electricity, fluctuating power is first absorbed by the carbon dioxide energy storage and release system; the relatively high-quality portion is used for the power consumption of the integrated aquaculture system, and the highest-quality portion is used for external transmission. When the renewable energy output is insufficient, the carbon dioxide energy storage and release system generates electricity for peak-hour priority supply. The rated installed capacity of the carbon dioxide energy storage and release system 5 is configured according to 10-30% of the maximum renewable energy output. Since the high and low pressures on both sides of the main compressor 511 are constant or close to constant values, a variable-speed compressor unit can be selected.

[0051] like Figure 2 As shown, the carbon dioxide energy storage and release system 5 includes a first high-temperature storage tank 501, a first low-temperature storage tank 502, a second low-temperature storage tank 503, a second high-temperature storage tank 504, a carbon dioxide heat recovery heat exchanger 505, a carbon dioxide generator 506, a carbon dioxide range extender heat exchanger 507, a carbon dioxide waste heat absorber 508, a carbon dioxide preheater 509, a carbon dioxide high-pressure storage tank 510, a main compressor 511, a turbine 512, an auxiliary compressor 513, a throttle valve 514, a fifth circulation pump 515, a third circulation pump 516, a second circulation pump 517, and a first circulation pump 518. The throttle valve 514 can be replaced by the auxiliary turbine.

[0052] The system comprises a carbon dioxide preheater 509, a main compressor 511, a carbon dioxide heat recovery heat exchanger 505, a high-pressure carbon dioxide storage tank 510, a carbon dioxide generator 506, a turbine 512, and a carbon dioxide waste heat absorber 508 connected in series. The gas inlet and outlet of the carbon dioxide storage system 9 are connected via pipelines to the outlet of the carbon dioxide waste heat absorber 508 and the inlet of the carbon dioxide preheater 509, respectively. The high-pressure carbon dioxide storage tank 510 stores liquid or supercritical carbon dioxide. A first high-temperature storage tank 501 is connected between the carbon dioxide heat recovery heat exchanger 505 and the carbon dioxide generator 506 via a first pipeline a. A first low-temperature storage tank 502 is connected between the carbon dioxide heat recovery heat exchanger 505 and the carbon dioxide generator 506 via a second pipeline b. A first circulation pump 518 is installed on the first pipeline a between the carbon dioxide heat recovery heat exchanger 505 and the first high-temperature storage tank 501. A second circulation pump 517 is installed on the second pipeline b between the carbon dioxide generator 506 and the first low-temperature storage tank 502. The inlet of the second cryogenic storage tank 503 is connected to the carbon dioxide preheater 509 via the third pipeline c. The outlet of the second high-temperature storage tank 504 is connected to the carbon dioxide preheater 509 via the fourth pipeline d. A third circulating pump 516 is installed on the third pipeline c. The carbon dioxide range extender heat exchanger 507 is installed on the fifth pipeline e between the second cryogenic storage tank 503 and the second high-temperature storage tank 504. The carbon dioxide waste heat absorber 508, the auxiliary compressor 513, and the carbon dioxide range extender heat exchanger 507 are connected in series to form a closed loop. A throttling valve 514 or an auxiliary turbine is installed on the sixth pipeline f between the carbon dioxide range extender heat exchanger 507 and the carbon dioxide waste heat absorber 508.

[0053] During the energy storage process, low-pressure carbon dioxide originates from the underwater carbon dioxide storage system 9 and enters the carbon dioxide energy storage and release system 5 via the storage pipeline 8. The carbon dioxide undergoes preliminary heating in the carbon dioxide preheater 509, where the heat for heating the carbon dioxide comes from the hot water stored in the second high-temperature storage tank 504. The heated water is then stored in the second low-temperature storage tank 503. After exiting the carbon dioxide preheater 509, the carbon dioxide is heated and pressurized by the main compressor 511, and then undergoes thermal decoupling in the carbon dioxide heat recovery heat exchanger 505. The pressurized hot water in the first low-temperature storage tank 502 absorbs heat from the carbon dioxide heated and pressurized by the main compressor 511 in the carbon dioxide heat recovery heat exchanger 505, and then enters the first high-temperature storage tank 501. The heat-dissipated carbon dioxide (liquid or supercritical state) is stored in the high-pressure carbon dioxide storage tank 510, completing the storage process.

[0054] During the energy release process, carbon dioxide (liquid or supercritical) originates from the high-pressure carbon dioxide storage tank 510 and undergoes thermo-coupling in the carbon dioxide generator 506. The heat originates from the first high-temperature storage tank 501. After the pressurized hot water is cooled in the carbon dioxide generator 506, it enters the first low-temperature storage tank 502. The high-temperature and high-pressure carbon dioxide after thermo-coupling in the carbon dioxide generator 506 drives the turbine 512 to drive the generator to generate electricity. After performing work, the low-parameter carbon dioxide further dissipates heat in the carbon dioxide waste heat absorber 508 before entering the underwater carbon dioxide storage system 9, completing the energy storage process.

[0055] In this embodiment, the heat released by carbon dioxide in the carbon dioxide waste heat absorber 508 is absorbed by the heat pump working fluid (carbon dioxide or organic working fluid), pressurized by the auxiliary compressor 513, first released by the carbon dioxide range extender heat exchanger 507, then depressurized by the throttle valve 514 (or auxiliary turbine) before entering the carbon dioxide waste heat absorber 508, thus completing the continuous heating operation in a cyclical manner. The heat released in the carbon dioxide range extender heat exchanger 507 is absorbed by the hot water in the second low-temperature storage tank 503 and stored in the second high-temperature storage tank 504. The second high-temperature storage tank 504 provides heat for the carbon dioxide flowing out of the carbon dioxide storage system 9 and entering the carbon dioxide preheater 509. In this embodiment, the heat pump is... Figure 2 It consists of a carbon dioxide range extender heat exchanger 507, a carbon dioxide waste heat absorber 508, an auxiliary compressor 513, and a throttle valve 514 (or an auxiliary turbine).

[0056] In this embodiment, a new model for marine new energy development that integrates power generation and aquaculture is constructed by coordinating an energy supply system based on carbon dioxide energy storage and release with an aquaculture system. The new energy can be consumed locally first, which can reduce the peak and total output of the new energy, and is conducive to optimizing the transmission cost of new energy to shore. In addition, the carbon dioxide energy storage and release system 5 greatly reduces the volatility of new energy output.

[0057] The energy supply system based on carbon dioxide energy storage and release utilizes a carbon dioxide energy storage and release system 5, which is smaller in size than a compressed air energy storage and release system, thus reducing the cost of the floating foundation 4. Carbon dioxide is chosen as the circulating working fluid, taking advantage of its high density and small volume. High and low pressure constant-pressure storage is employed, and the main equipment does not involve sliding pressure operation. Both turbine 512 and main compressor 511 can be variable-speed units to maximize the output of new energy sources. Furthermore, carbon dioxide is produced in large quantities by thermal power plants, making the cost of obtaining the circulating working fluid for the carbon dioxide energy storage and release system 5 very low.

[0058] By using a water depth of 50-150 meters for constant-pressure storage of low-pressure carbon dioxide, the volume of low-pressure carbon dioxide storage is reduced by 5-20 times. Furthermore, the constant-pressure storage method allows for slow mass exchange between carbon dioxide and seawater. During the energy storage process, carbon dioxide-rich seawater is discharged into the integrated aquaculture system, increasing the nutrient content of the seawater, which is beneficial for aquaculture and can achieve a green and environmentally friendly biological carbon sequestration effect.

[0059] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An energy supply system based on carbon dioxide energy storage and release, characterized in that, include: A carbon dioxide storage system (9) is suitable for installation on the seabed (2); A carbon dioxide energy storage and release system (5) is connected to the carbon dioxide gas storage system (9) through a gas storage pipeline (8). The carbon dioxide energy storage and release system (5) is suitable for installation on the sea surface (1) and is suitable for connection to the power grid of the new energy power generation system. The carbon dioxide energy storage and release system (5) includes a carbon dioxide preheater (509), a main compressor (511), a carbon dioxide heat recovery heat exchanger (505), a carbon dioxide high-pressure storage tank (510), a carbon dioxide generator (506), a turbine (512), and a carbon dioxide waste heat absorber (508) connected in series. The inlet and outlet of the carbon dioxide gas storage system (9) are respectively connected to the gas outlet of the carbon dioxide waste heat absorber (508) and the gas inlet of the carbon dioxide preheater (509) through pipelines. The carbon dioxide high-pressure storage tank (510) is suitable for storing liquid or supercritical carbon dioxide. It also includes a second cryogenic storage tank (503) and a second high-temperature storage tank (504) connected in series. The inlet of the second cryogenic storage tank (503) is connected to the outlet of the carbon dioxide preheater (509) through a third pipe (c), and the outlet of the second high-temperature storage tank (504) is connected to the inlet of the carbon dioxide preheater (509) through a fourth pipe (d). The third pipeline (c) is equipped with a third circulating pump (516); It also includes a carbon dioxide range extender heat exchanger (507) and an auxiliary compressor (513). The carbon dioxide range extender heat exchanger (507) is installed on the fifth pipeline (e) between the second low-temperature storage tank (503) and the second high-temperature storage tank (504). The carbon dioxide waste heat absorber (508), the auxiliary compressor (513), and the carbon dioxide range extender heat exchanger (507) are connected in series to form a closed loop. A throttling valve (514) or an auxiliary turbine is installed on the sixth pipeline (f) between the carbon dioxide range extender heat exchanger (507) and the carbon dioxide waste heat absorber (508).

2. The energy supply system based on carbon dioxide energy storage and release according to claim 1, characterized in that, It also includes a generator connected to the turbine (512), and the electricity generated by the generator is connected to the power grid.

3. The energy supply system based on carbon dioxide energy storage and release according to claim 1, characterized in that, It also includes a first cryogenic storage tank (502) and a first high-temperature storage tank (501). The two ends of the first high-temperature storage tank (501) are respectively connected to the carbon dioxide heat recovery heat exchanger (505) and the carbon dioxide generator (506) through a first pipeline (a). The two ends of the first cryogenic storage tank (502) are respectively connected to the carbon dioxide heat recovery heat exchanger (505) and the carbon dioxide generator (506) through a second pipeline (b).

4. The energy supply system based on carbon dioxide energy storage and release according to claim 3, characterized in that, It also includes a first circulation pump (518) and a second circulation pump (517). The first circulation pump (518) is located on the first pipeline (a) between the carbon dioxide heat recovery heat exchanger (505) and the first high-temperature storage tank (501), and the second circulation pump (517) is located on the second pipeline (b) between the carbon dioxide generator (506) and the first low-temperature storage tank (502).

5. The energy supply system based on carbon dioxide energy storage and release according to claim 1, characterized in that, It also includes a floating base (4), on which the carbon dioxide energy storage and release system (5) is placed.

6. The energy supply system based on carbon dioxide energy storage and release according to claim 1, characterized in that, The carbon dioxide storage system (9) is a constant pressure storage system.

7. The energy supply system based on carbon dioxide energy storage and release according to claim 1, characterized in that, The carbon dioxide storage system (9) includes a base (902) and a storage tank body (901) fixed on the base (902).

8. The energy supply system based on carbon dioxide energy storage and release according to claim 7, characterized in that, There are at least two tank bodies (901), and at least two tank bodies (901) are connected in series by a series pipeline (903).

9. The energy supply system based on carbon dioxide energy storage and release according to claim 8, characterized in that, The series pipeline (903) is provided with a second shut-off valve (907), and at least two of the tank bodies (901) include a first-stage tank body (901) and a last-stage tank body (901). The last-stage tank body (901) is provided with an inlet / outlet water pipe (905), and the inlet / outlet water pipe (905) is provided with a first shut-off valve (906).

10. The energy supply system based on carbon dioxide energy storage and release according to claim 7, characterized in that, The main body of the storage tank (901) is connected to the sea, and the main body of the storage tank (901) is a precast cement structure.

11. An aquaculture system (10), based on the energy supply system based on carbon dioxide energy storage and release according to any one of claims 1-10, characterized in that, include: Float connecting frame (6); Multiple floating structures (7) are connected to the float connecting frame (6); The aquaculture structure is connected to the floating structure (7).

12. The aquaculture system (10) according to claim 11, characterized in that, The aquaculture system (10) is supplied with carbon dioxide by the carbon dioxide storage system (9).

13. The aquaculture system (10) according to claim 11, characterized in that, The aquaculture structure is suitable for cultivating algae (1001) and shellfish (1002).

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