Carbon dioxide storage system for compressed carbon dioxide energy storage and control method

Abstract

The invention provides a carbon dioxide storage system for compressed carbon dioxide energy storage and a control method, and can be applied to the technical field of electric energy storage. Based on the system, a plurality of first perforated pipes and a plurality of second perforated pipes are alternately arranged in an adsorption tank in the axial direction, and corresponding adsorbent particle layers are arranged between the adjacent first perforated pipes and second perforated pipes; and meanwhile, a plurality of first perforated pipes and a plurality of second perforated pipes are respectively connected into a heat exchanger connected with a hot tank and a cold tank through an inlet main pipe and an outlet main pipe. Therefore, on one hand, operation of a compressed carbon dioxide energy storage system can be well matched, the contact face of carbon dioxide gas and adsorbent particles is increased in the operation processes of carbon dioxide adsorption, desorption and the like, and the heat exchange efficiency is improved; on the other hand, heat generated in the operation process can be effectively recycled and utilized, heat waste is reduced, and overall energy consumption is reduced.

Description

Technical Field

[0001] This specification belongs to the field of electric energy storage technology, and in particular to a carbon dioxide storage system and control method for compressed carbon dioxide energy storage. Background Art

[0002] With the promotion and popularization of new energy technologies, compressed carbon dioxide energy storage systems, as an electrical energy storage system, have received more and more attention. In the process of operating and using compressed carbon dioxide energy storage systems, the use and storage of carbon dioxide are often involved. For example, when using a compressed carbon dioxide energy storage system for compressed energy storage, it is necessary to desorb and release the stored carbon dioxide, and use electrical energy to compress the above-mentioned low-pressure gaseous carbon dioxide to a supercritical state (or cool it to a high-pressure liquid state) and then store it in a high-pressure container; when using a compressed carbon dioxide energy storage system for expansion and energy release, it is necessary to use the high-pressure carbon dioxide in the high-pressure container to expand and perform work to generate electrical energy, and at the same time, the carbon dioxide after the work is adsorbed and stored for subsequent use.

[0003] Based on existing carbon dioxide storage equipment, when cooperating with compressed carbon dioxide energy storage systems for carbon dioxide adsorption and desorption, there are often problems such as low heat exchange efficiency, large flow resistance, and high energy consumption.

[0004] To address the above issues, no effective solutions have been proposed so far. Summary of the Invention

[0005] This specification provides a carbon dioxide storage system and control method for compressed carbon dioxide energy storage, which can better cooperate with the operation of the compressed carbon dioxide energy storage system, increase the contact area with adsorbent particles during operations such as carbon dioxide adsorption and desorption, improve heat exchange efficiency; and effectively recycle and utilize the heat generated during the operation to reduce energy consumption.

[0006] This specification provides a carbon dioxide storage system for compressed carbon dioxide energy storage, which is connected to a compressed carbon dioxide energy storage system and includes at least: an adsorption tank, a heat exchanger, a hot tank, and a cold tank; wherein,

[0007] A plurality of first porous tubes and a plurality of second porous tubes are alternately arranged along the axial direction in the adsorption tank, and corresponding adsorbent particle layers are further provided between adjacent first porous tubes and second porous tubes; one end of the first porous tube is closed, and the other end is connected to the inlet main pipe; one end of the second porous tube is closed, and the other end is connected to the outlet main pipe; the inlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a first pipe, and a first circulation pump is further provided on the first pipe; the outlet main pipe is connected to the first inlet on the gas side of the heat exchanger through a second pipe; the inlet main pipe and the outlet main pipe are connected by a third pipe;

[0008] The adsorption tank further includes an inlet and an outlet; the outlet is connected to the compressor of the compressed carbon dioxide energy storage system and is connected to the first inlet of the heat exchanger through a fourth pipeline; the inlet is connected to the expander of the compressed carbon dioxide energy storage system;

[0009] The third pipeline is provided with a first switch valve, the second pipeline is provided with a second switch valve, and the fourth pipeline is provided with a third switch valve;

[0010] The hot tank and the cold tank store corresponding fluid media; the hot tank and the cold tank are connected to the second inlet of the liquid side of the heat exchanger through a fifth pipeline, and a second circulation pump is also provided on the fifth pipeline; the hot tank and the cold tank are also connected to the second outlet of the liquid side of the heat exchanger through a sixth pipeline.

[0011] In one embodiment, a plurality of nozzles are respectively provided above and below the first porous tube, and a plurality of reflow ports are respectively provided above and below the second porous tube.

[0012] In one embodiment, a first regulating valve is provided between the first porous tube and the inlet main pipe, and a second regulating valve is provided between the second porous tube and the outlet main pipe.

[0013] In one embodiment, one end of the hot tank is connected to the fifth pipeline through the first branch, and the other end is connected to the sixth pipeline through the second branch; one end of the cold tank is connected to the fifth pipeline through the third branch, and the other end is connected to the sixth pipeline through the fourth branch;

[0014] The first branch is provided with a fourth switch valve, the third branch is provided with a fifth switch valve, the second branch is provided with a sixth switch valve, and the fourth branch is provided with a seventh switch valve.

[0015] In one embodiment, a first header is connected between the first regulating valve and the first porous tube in the same horizontal plane, and a second header is connected between the second regulating valve and the second porous tube in the same horizontal plane.

[0016] This specification also provides a control method based on the carbon dioxide storage system for compressed carbon dioxide energy storage, comprising:

[0017] In the desorption mode, the second switch valve is opened, and the first circulation pump is started to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline;

[0018] Based on the heat exchanger, the first carbon dioxide gas is heated by the fluid medium in the hot tank to obtain the heated second carbon dioxide gas and the cooled fluid medium; and the cooled fluid medium is stored in the cold tank;

[0019] Controlling the second carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe; and utilizing the plurality of first porous tubes to spray multiple beams of the second carbon dioxide gas to corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas;

[0020] The third carbon dioxide gas is controlled to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0021] In one embodiment, after desorbing the third carbon dioxide gas, the method further comprises:

[0022] The first part of the third carbon dioxide gas is controlled to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank; at the same time, the second part of the third carbon dioxide gas is controlled to pass through the second porous tube and the second pipeline into the heat exchanger to circulate and heat the adsorbent particles in the adsorbent particle layer.

[0023] In one embodiment, during the process of using the plurality of first porous tubes to spray the plurality of second carbon dioxide gas streams to the corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas, the method further comprises:

[0024] Collecting temperature parameters of the adsorbent particle layer;

[0025] According to the temperature parameter, the opening degree of the first regulating valve and / or the opening degree of the second regulating valve corresponding to the adsorbent particle layer is adjusted.

[0026] In one embodiment, the method further comprises:

[0027] In the adsorption mode, the fourth carbon dioxide gas after the compressed carbon dioxide energy storage system expands and releases energy is controlled to enter the adsorption tank through the inlet end of the adsorption tank to cool the adsorbent particle layer during the adsorption process to obtain the fifth carbon dioxide gas after heating;

[0028] Open the second on-off valve and start the first circulation pump to drive the fifth carbon dioxide gas in the adsorption tank into the heat exchanger through the second pipeline;

[0029] Based on the heat exchanger, the fifth carbon dioxide gas is cooled by using the fluid medium in the cold tank to obtain the cooled sixth carbon dioxide gas and the heated fluid medium; and the heated fluid medium is stored in the hot tank;

[0030] The sixth carbon dioxide gas is controlled to enter the plurality of first porous tubes through the inlet main pipe; and the plurality of first porous tubes are used to spray multiple beams of the sixth carbon dioxide gas to the corresponding adsorbent particle layers, so that the sixth carbon dioxide gas is adsorbed and stored in the adsorbent particles.

[0031] This specification also provides a computer device, including a processor and a memory for storing processor-executable instructions, wherein when the processor executes the instructions, the steps of a control method for a carbon dioxide storage system for compressed carbon dioxide energy storage are implemented.

[0032] Based on the carbon dioxide storage system and control method for compressed carbon dioxide energy storage provided in this specification, the system is connected to the compressed carbon dioxide energy storage system and comprises at least: an adsorption tank, a heat exchanger, a hot tank and a cold tank; wherein, a plurality of first porous tubes and a plurality of second porous tubes are alternately arranged along the axial direction in the adsorption tank, and a corresponding thinner adsorbent particle layer is also provided between adjacent first porous tubes and second porous tubes; wherein, one end of the first porous tube is closed, and the other end is connected to the inlet main pipe; one end of the second porous tube is closed, and the other end is connected to the outlet main pipe; the inlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a first pipe, and a first circulation pump is also provided on the first pipe; the outlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a second pipe The adsorption tank further comprises an inlet and an outlet. The outlet is connected to the compressor of the compressed carbon dioxide energy storage system and is connected to the first inlet of the heat exchanger via a fourth pipeline. The inlet is connected to the expander of the compressed carbon dioxide energy storage system. The third pipeline is provided with a first on-off valve, the second pipeline is provided with a second on-off valve, and the fourth pipeline is provided with a third on-off valve. The hot tank and the cold tank store corresponding fluid media. The hot tank and the cold tank are connected to the second inlet of the liquid side of the heat exchanger via a fifth pipeline, and a second circulation pump is also provided on the fifth pipeline. The hot tank and the cold tank are also connected to the second outlet of the liquid side of the heat exchanger via a sixth pipeline. A plurality of first porous tubes and a plurality of second porous tubes are alternately arranged axially within the adsorption tank, and corresponding adsorbent particle layers are provided between adjacent first and second porous tubes. At the same time, the plurality of first porous tubes and the plurality of second porous tubes are connected to the heat exchanger connected to the hot tank and the cold tank via the inlet and outlet pipelines, respectively. In this way, on the one hand, it can better cooperate with the operation of the compressed carbon dioxide energy storage system, increase the contact area with the adsorbent particles during the carbon dioxide adsorption and desorption operations, and improve the heat exchange efficiency; on the other hand, it can also effectively recover and utilize the heat generated during the above operations, reduce heat waste, and reduce overall energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of this specification, the following is a brief introduction to the drawings required for use in the embodiments. The drawings described below are only some of the embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a schematic diagram of the structural composition of a carbon dioxide storage system for compressed carbon dioxide energy storage provided by an embodiment of this specification;

[0035] Figure 2 This is a schematic diagram of connecting multiple first porous tubes and multiple second porous tubes in the same horizontal plane in a carbon dioxide storage system for compressed carbon dioxide energy storage provided by an embodiment of this specification in a scenario example;

[0036] Figure 3 This is a schematic diagram of the partial structure of a first porous tube and a second porous tube in a carbon dioxide storage system for compressed carbon dioxide energy storage provided by an embodiment of this specification, in a scenario example;

[0037] Figure 4 This is a flow chart of a control method for a carbon dioxide storage system for compressed carbon dioxide energy storage provided by an embodiment of this specification;

[0038] Figure 5 is a flow chart of a control method for a carbon dioxide storage system for compressed carbon dioxide energy storage provided by another embodiment of this specification;

[0039] Figure 6 This is a schematic diagram of the structure of a computer device provided by one embodiment of this specification;

[0040] Figure 7 This is a schematic diagram of the structure of a control device for a carbon dioxide storage system for compressed carbon dioxide energy storage provided by an embodiment of this specification;

[0041] Description of the drawings: 1. Adsorption tank, 2. First porous tube, 201. Nozzle, 202. First filter, 3. First regulating valve, 301. Second regulating valve, 4. Inlet pipe, 401. First header, 5. Support filter, 6. Inlet end, 7. First switch valve, 8. Second porous tube, 801. Reflux port, 802. Second filter, 9. Outlet pipe, 901. Second switch valve, 902. Second header, 10. Adsorbent particle layer, 11. Outlet end, 12. Third switch valve, 13. Heat exchanger, 14. 1st circulating pump, 15th 2nd circulating pump, 16th 4th on-off valve, 17th 5th on-off valve, 18th hot tank, 19th cold tank, 20th 6th on-off valve, 21st 7th on-off valve, 22th 1st heat exchange coil, 23th 2nd heat exchange coil, 1-1st pipeline, 1-2nd pipeline, 1-3nd pipeline, 1-4nd pipeline, 2-1st pipeline, 2-1-1st branch, 2-1-2nd branch, 2-2nd pipeline, 2-2-1st branch, 2-2-2nd branch. DETAILED DESCRIPTION

[0042] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0043] It should be noted that in the embodiments of this specification, certain software, components, models and other existing solutions in the industry may be mentioned. They should be regarded as exemplary and their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0044] See Figure 1 As shown, the embodiment of this specification provides a carbon dioxide storage system for compressed carbon dioxide energy storage, which is connected to a compressed carbon dioxide energy storage system. The system may include at least: an adsorption tank 1, a heat exchanger 13, a hot tank 18 and a cold tank 19. Among them,

[0045] A plurality of first porous tubes 3 and a plurality of second porous tubes 301 are alternately arranged along the axial direction in the adsorption tank 1, and corresponding adsorbent particle layers 10 are further provided between adjacent first porous tubes 3 and second porous tubes 301; one end of the first porous tube 3 is closed, and the other end is connected to the inlet main pipe 4; one end of the second porous tube 301 is closed, and the other end is connected to the outlet main pipe 9; the inlet main pipe 4 is connected to the first outlet on the gas side of the heat exchanger 13 through a first pipeline 1-1, and a first circulation pump 14 is further provided on the first pipeline 1-1; the outlet main pipe 9 is connected to the first inlet on the gas side of the heat exchanger 13 through a second pipeline 1-2; the inlet main pipe 4 and the outlet main pipe 9 are connected through a third pipeline 1-3;

[0046] The adsorption tank 1 further includes an inlet end 6 and an outlet end 11; the outlet end 11 is connected to the compressor of the compressed carbon dioxide energy storage system and is connected to the first inlet of the heat exchanger 13 through the fourth pipeline 1-4; the inlet end 6 is connected to the expander of the compressed carbon dioxide energy storage system;

[0047] The third pipeline 1-3 is provided with a first switch valve 7, the second pipeline 1-2 is provided with a second switch valve 901, and the fourth pipeline 1-4 is provided with a third switch valve 12;

[0048] The hot tank 18 and the cold tank 19 store corresponding fluid media; the hot tank 18 and the cold tank 19 are connected to the second inlet of the liquid side of the heat exchanger 13 through the fifth pipeline 2-1, and a second circulation pump 15 is also provided on the fifth pipeline 2-1; the hot tank 18 and the cold tank 19 are also connected to the second outlet of the liquid side of the heat exchanger 13 through the sixth pipeline 2-2.

[0049] Among them, the above-mentioned outlet port 11 can be specifically connected to the compressor of the compressed carbon dioxide energy storage system through a corresponding pipeline, so as to cooperate with the compressed carbon dioxide energy storage system in the compression energy storage stage, release carbon dioxide gas by desorption (which can be recorded as desorption mode), and provide the compressor with the carbon dioxide gas required for compression energy storage.

[0050] The above-mentioned inlet end 6 can be specifically connected to the expander of the compressed carbon dioxide energy storage system through a corresponding pipeline, so as to cooperate with the compressed carbon dioxide energy storage system in the expansion and energy release stage, receive the carbon dioxide gas discharged after the expander performs work, and adsorb and store the above-mentioned carbon dioxide gas (which can be recorded as adsorption mode) for subsequent use.

[0051] The above-mentioned compressed carbon dioxide energy storage system can be specifically understood as a physical energy storage system for storing energy such as electricity. The system includes at least two parts: a compression section and an expansion section. Among them, the compression section is at least connected to a compressor, and the expansion section is at least connected to an expander. When it is necessary to store electrical energy (for example, during off-peak hours), the compressor in the compression section can use electrical energy to compress the gas (for example, carbon dioxide gas) to convert the electrical energy into potential energy, and store the corresponding high-pressure gas in a high-pressure storage tank to achieve compressed energy storage. When it is necessary to use electrical energy (for example, during peak hours), the expander in the expansion section can use the high-pressure gas to expand and perform work to convert the potential energy of the high-pressure gas into electrical energy, thereby achieving expansion energy release.

[0052] Specifically, the adsorbent particle layer 10 includes a plurality of adsorbent particles, which are used to adsorb and store carbon dioxide gas in an adsorption mode and to desorb and release carbon dioxide gas in a desorption mode.

[0053] The adsorbent particles may specifically be solid particles in spherical, cylindrical or other regular shapes made of zeolite 13X or activated carbon.

[0054] It should be noted that in the adsorption mode, the adsorbent particles will generate adsorption heat in the process of adsorbing carbon dioxide gas, which will increase the temperature of the adsorbent particles (or the adsorbent particle layer 10), thereby affecting the normal adsorption of carbon dioxide gas. Therefore, it is necessary to promptly remove heat and cool the adsorbent particle layer 10 to ensure that the adsorption and gas storage can be carried out more stably. In the desorption mode, the adsorbent particles need to obtain and consume a large amount of heat to increase the temperature, so that they can more fully desorb and release the previously adsorbed carbon dioxide gas. Therefore, it is necessary to provide relatively sufficient heat to each adsorbent particle in the adsorbent particle layer 10 as much as possible to ensure that each adsorbent particle can more efficiently and completely desorb and release the adsorbed and stored carbon dioxide gas.

[0055] A plurality of holes may be respectively opened on the top and bottom of the first porous tube 2 so that each first porous tube 2 can simultaneously eject multiple beams of carbon dioxide gas from multiple different positions along the tube body from the top and bottom.

[0056] Similarly, a plurality of holes may be respectively opened on the top and bottom of the second porous tube 8 so that each second porous tube 8 can simultaneously recover carbon dioxide gas from multiple different positions along the top and bottom of the tube body.

[0057] Specifically, one end of the first porous tube 2 is closed, and the other end is connected to the inlet main pipe 4. One end of the second porous tube 8 is closed, and the other end is connected to the outlet main pipe 9. Figure 1 As mentioned above, the plurality of first porous tubes 2 and the plurality of second porous tubes 8 can be respectively arranged on both sides of the adsorption tank 1 .

[0058] For further information, see Figure 1 As shown, in the adsorption tank 1, multiple first porous tubes 2 and multiple second porous tubes 8 may be alternately arranged at equal intervals along the axial direction of the adsorption tank 1. For example, a first porous tube is provided at the first position on the right side of the adsorption tank 1; a second porous tube is provided at the second position to the left of the first position at a fixed distance along the axial direction; and another first porous tube is provided at the third position to the right of the second position at a fixed distance along the axial direction. In addition, in the adsorption tank 1, a layer of adsorbent particles is provided in the space between adjacent first porous tubes 2 and second porous tubes 8.

[0059] Based on the above structure, on the one hand, the originally thick and relatively large adsorbent particles can be divided into multiple thinner and relatively smaller adsorbent particle layers, so that during subsequent operations, carbon dioxide gas can more easily penetrate the adsorbent particle layers through the gaps between the particles and fully contact each adsorbent particle in the adsorbent particle layer. On the other hand, each adsorbent particle layer is respectively provided with at least one first porous tube and a second porous tube adjacent to the upper and lower sides thereof, thereby increasing the contact surface between the carbon dioxide gas and the adsorbent particles during subsequent operations and improving the overall heat exchange efficiency. In addition, the heat generated during the operation of each adsorbent particle layer (e.g., adsorption heat) can be promptly recovered through the second porous tube, thereby achieving cooling of the adsorbent particle layer, thereby ensuring smooth and stable operation (e.g., adsorption process).

[0060] The hot tank 18 and cold tank 19 can each store a corresponding fluid medium. Specifically, the fluid medium may include one or more of the following: water, molten salt, thermal oil, etc. Of course, it should be noted that the fluid media listed above are merely illustrative. In practice, other types of fluid media may also be used depending on the specific application and processing requirements, and this specification does not limit this.

[0061] Specifically, the hot tank 18 may store a high-temperature fluid medium, and the cold tank 19 may store a low-temperature fluid medium. Furthermore, a pressure balancing line may be provided between the hot tank 18 and the cold tank 19 to maintain a balanced and stable internal pressure between the hot tank 18 and the cold tank 19 when the fluid medium in the hot tank 18 and the cold tank 19 changes during operation.

[0062] Specifically, on the gas side, the inlet main pipe 4 can be connected to the first gas-side inlet of the heat exchanger 13 via a first pipe 1-1. The outlet main pipe 9 can be connected to the first gas-side inlet of the heat exchanger 13 via a second pipe 1-2. Meanwhile, on the liquid side, the hot tank 18 and the cold tank 19 can be connected to the second liquid-side inlet of the heat exchanger 13 via a fifth pipe 2-1, and connected to the second liquid-side outlet of the heat exchanger 13 via a sixth pipe 2-2.

[0063] For further information, see Figure 1 As shown, the hot tank 18 can be connected to the fifth pipeline 2-1 through the first branch 2-1-1 and to the sixth pipeline 2-2 through the second branch 2-2-1; the cold tank 19 can be connected to the fifth pipeline 2-2 through the third branch 2-1-2 and to the sixth pipeline 2-2 through the fourth branch 2-2-2.

[0064] In specific implementations, in adsorption mode, the carbon dioxide gas expanded and worked by the expander of the compressed carbon dioxide energy storage system can be fed into an adsorption tank via corresponding pipelines through the inlet port. Within the adsorption tank, the carbon dioxide gas can be adsorbed and stored by the adsorbent particles in the adsorbent particle layer. During the adsorption process, the adsorbent particles also generate adsorption heat, which the carbon dioxide gas in the adsorption tank absorbs, causing the temperature of the carbon dioxide gas in the adsorption tank to rise. At this point, the fluid medium (low-temperature fluid medium) stored in the cold tank can be used to cool the carbon dioxide in the adsorption tank through a heat exchanger, producing cooled carbon dioxide gas and heated fluid medium. The heated fluid medium is then transported through corresponding pipelines to the hot tank for storage, thereby recovering and storing the heat generated during the adsorption process. The cooled carbon dioxide gas is then sprayed through the inlet main pipe through multiple first porous tubes into multiple streams toward the multiple adsorbent particle layers, thereby cooling the adsorbent particle layers and producing heated carbon dioxide gas. Simultaneously, the heated carbon dioxide gas is recovered through multiple second porous tubes and then fed through the outlet main pipe and second pipeline to the heat exchanger for cooling. Thereby, the cyclic cooling of the adsorbent particle layer in the adsorption tank can be achieved during the adsorption process.

[0065] In the desorption mode, the fluid medium (high-temperature fluid medium) stored in the hot tank can be used to heat the free carbon dioxide gas in the adsorption tank through a heat exchanger; then, multiple beams of heated carbon dioxide gas are sprayed to each adsorbent particle layer through multiple first porous tubes to heat the adsorbent particle layer, so that the carbon dioxide gas previously adsorbed and stored by the adsorbent particles is desorbed and released; the carbon dioxide gas released by the desorption is then discharged through the outlet port and transported to the compressor of the compressed carbon dioxide energy storage system through the corresponding pipeline to cooperate with the compressed carbon dioxide energy storage system for compressed energy storage. At the same time, some carbon dioxide gas will be recovered by multiple second porous tubes, passed through the outlet main pipe, and transported to the heat exchanger through the second pipeline for heating. In this way, the cyclic heating of the adsorbent particle layer in the adsorption tank can be achieved during the desorption process.

[0066] In some embodiments, see Figure 2 As shown, a plurality of nozzles 201 may be provided above and below the first porous tube 2 , respectively; similarly, a plurality of reflow ports 801 may be provided above and below the second porous tube 8 , respectively.

[0067] Specifically, the nozzles 201 can be conical nozzles suitable for ejecting gas over a wide range and can be connected to the openings in the first porous tube 2. Accordingly, the first porous tube 2 can simultaneously eject multiple streams of carbon dioxide gas toward the upper and lower adsorbent particle layers through the multiple nozzles 201. In some cases, the first porous tube 2 can also utilize the multiple nozzles 201 to simultaneously recover carbon dioxide gas from both the upper and lower layers.

[0068] The reflux ports 801 can be wide-mouthed, suitable for collecting gas over a wide area, and can be connected to openings in the second porous tube 8. Accordingly, the second porous tube 8 can simultaneously recover carbon dioxide gas from both above and below via the multiple reflux ports 801. In some cases, the second porous tube 8 can also utilize the multiple reflux ports 801 to simultaneously eject multiple streams of carbon dioxide gas toward the adsorbent particle layers above and below.

[0069] Furthermore, a first filter screen 202 may be provided within the nozzle 201, and a second filter screen 802 may be provided within the reflux port 801. The pore sizes of the first filter screen 202 and the second filter screen 802 are smaller than the diameters of the adsorbent particles in the adsorbent particle layer. In this manner, the first filter screen 202 and the second filter screen 802 filter and intercept any adsorbent particles in the adsorption tank 1, preventing the adsorbent particles from entering the first porous tube 2 and the second porous tube 8 and causing clogging of the porous tubes.

[0070] In some embodiments, a first regulating valve 3 may be provided between the first porous tube 2 and the inlet main pipe 4 , and a second regulating valve 301 may be provided between the second porous tube 8 and the outlet main pipe 9 .

[0071] Based on the above structure, during specific implementation, the opening of the first regulating valve 3 and the second regulating valve 301 can be adjusted according to specific conditions (for example, temperature and / or flow rate) to achieve adjustment of the first porous tube 2 and the second porous tube 8, thereby adjusting the desorption rate or adsorption rate of the carbon dioxide gas, so that the desorption process or adsorption process can be carried out stably as required.

[0072] For details, please refer to Figure 3 As shown, multiple first porous tubes 2 can be arranged in the same horizontal plane at the position where the first porous tube 2 is arranged axially on the adsorption tank 1. The multiple first porous tubes 2 in the same horizontal plane can be arranged at equal intervals in the horizontal plane.

[0073] Similarly, multiple second porous tubes 8 located in the same horizontal plane may be arranged at the position where the second porous tube 8 is arranged along the axial direction of the adsorption tank 1. The multiple second porous tubes 8 in the same horizontal plane may be arranged at equal intervals in the horizontal plane.

[0074] Based on the above structure, the contact area and contact probability between the carbon dioxide gas in the first porous tube and the second porous tube and the adjacent adsorbent particle layer can be further increased, thereby further improving the heat exchange efficiency.

[0075] In some embodiments, see Figure 3As shown, a first header 401 is further connected between the first regulating valve 3 and the first porous pipe 2 in the same horizontal plane.

[0076] Based on the above structure, the first manifold 401 can be used to buffer the carbon dioxide gas input through the inlet main pipe 4, so that the carbon dioxide gas ejected through the first porous tube 2 is relatively stable; at the same time, the first manifold 401 can also be used to relatively evenly distribute the carbon dioxide gas input through the inlet main pipe 4 to multiple different first porous tubes 2 in the same horizontal plane, so that the amount and flow rate of carbon dioxide gas ejected from multiple different first porous tubes 2 located at the same axial position are relatively consistent.

[0077] Similarly, a second header 902 is connected between the second regulating valve 301 and the second porous pipe 8 in the same horizontal plane.

[0078] In some embodiments, specifically, corresponding temperature sensors and flow rate sensors may be further provided on the plurality of first porous tubes 2 and the plurality of second porous tubes 8 .

[0079] Accordingly, in a specific implementation, the opening of the first regulating valve 3 can be adjusted in a targeted manner based on the temperature data and / or flow rate data monitored in real time on the first porous tube 2; similarly, the opening of the second regulating valve 301 can be adjusted in a targeted manner based on the temperature data and / or flow rate data monitored in real time on the second porous tube 8. This allows for relatively precise adjustment of the first and second regulating valves, achieving relatively finer adjustment and control.

[0080] In some embodiments, see Figure 1 As shown, one end of the hot tank 18 can be connected to the fifth pipeline 2-1 through the first branch 2-1-1, and the other end is connected to the sixth pipeline 2-2 through the second branch 2-2-1; one end of the cold tank 19 is connected to the fifth pipeline 2-1 through the third branch 2-1-2, and the other end is connected to the sixth pipeline 2-2 through the fourth branch 2-2-2;

[0081] The first branch 2-1-1 can be specifically provided with a fourth switch valve 16, the third branch 2-1-2 can be specifically provided with a fifth switch valve 17, the second branch 2-2-1 can be specifically provided with a sixth switch valve 20, and the fourth branch 2-2-2 can be specifically provided with a seventh switch valve 21.

[0082] Based on the above structure, the hot tank and cold tank can be adjusted relatively finely, realizing heat recovery and utilization during operation. Specifically, for example, when heat recovery and storage is required, the fifth switch valve 17 and the sixth switch 20 can be opened first; the second circulation pump 15 can then be activated to control the transfer of the low-temperature fluid medium stored in the cold tank to the heat exchanger, where it is heated using the heat generated in the adsorption tank to obtain a heated high-temperature fluid medium; finally, the high-temperature fluid medium is transferred and stored in the hot tank, realizing heat recovery and storage. For another example, when heat release and utilization is required, the fourth switch valve 16 and the seventh switch valve 21 can be opened first; the second circulation pump 15 can then be activated to control the transfer of the high-temperature fluid medium stored in the hot tank to the heat exchanger, where it provides heat to the adsorption tank to heat the adsorbent particle layer, obtaining a cooled low-temperature fluid medium; finally, the low-temperature fluid medium is transferred and stored in the cold tank, realizing heat release and utilization.

[0083] In some embodiments, a temperature sensor may be provided on each adsorbent particle layer 10. Specifically, in the desorption mode, the temperature of each adsorbent particle layer may be monitored in real time by the temperature sensor. When the temperature of each adsorbent particle layer is greater than a preset first reference temperature threshold, it may be determined that the adsorbent particles in the adsorbent particle layer have completely released the adsorbed carbon dioxide gas, and the desorption mode may be terminated.

[0084] In the adsorption mode, the heat exchanger may not be started at the beginning, and the hot tank and the cold tank may not be used. During the adsorption process, the temperature of each adsorbent particle layer is monitored in real time by a temperature sensor. When the temperature of at least one adsorbent particle layer is monitored to be greater than the preset second reference temperature threshold, it can be determined that the adsorption heat generated by the current adsorbent particle layer is large, and the current temperature of the adsorbent particles is high, which has begun to affect the normal adsorption of carbon dioxide gas. At this time, the heat exchanger can be triggered to start, and then the hot tank and the cold tank can be used in combination to cool the adsorbent particle layer while recovering and storing the heat generated in the adsorption process for subsequent use.

[0085] The above-mentioned preset first reference temperature threshold and preset second reference temperature threshold can be obtained through a large number of sample experimental tests and learned and sorted according to the experimental test data.

[0086] In some embodiments, see Figure 1 As shown, a support filter 5 may be further provided in the adsorption tank 1. The support filter 5 may be provided at the bottom of the adsorption tank 1, and the pore size of the support filter 5 is smaller than the diameter of the adsorbent particles in the adsorbent particle layer.

[0087] Based on the above structure, the support filter can be used to filter and intercept the adsorbent particles scattered from each adsorbent particle layer above, so as to prevent the adsorbent particles from entering the inlet end and causing blockage.

[0088] In some embodiments, see Figure 1 As shown, the hot tank is further connected to a first heat exchange coil 22, and the cold tank is further connected to a second heat exchange coil 23.

[0089] The first heat exchange coil 22 may be connected to an external heat source, and the second heat exchange coil 23 may be connected to an external cold source.

[0090] Specifically, a temperature sensor may be provided in the hot tank 18 , and a temperature sensor may be provided in the cold tank 19 .

[0091] In specific implementation, during operation, when the temperature sensor in the hot tank 18 detects that the temperature of the fluid medium in the hot tank has been lower than the first required temperature for a specified period of time, the first heat exchange coil 22 can be used to interact with the external heat source to introduce and use a small amount of heat provided by the external heat source to increase the temperature of the fluid medium in the hot tank, thereby maintaining the temperature of the fluid medium in the hot tank within a suitable higher temperature value range.

[0092] When the temperature sensor in the cold tank 19 monitors that the temperature of the fluid medium in the cold tank has been higher than the second required temperature for a specified period of time, the second heat exchange coil 23 can be used to interact with an external cold source to introduce and utilize the external cold source to assist in cooling the fluid medium in the cold tank 19, so as to maintain the temperature of the fluid medium in the cold tank within a suitable lower temperature value range; wherein the second required temperature is lower than the first required temperature.

[0093] It should be noted that the first heat exchange coil and the second heat exchange coil are used here because the contact area between the coil structure and the hot tank and the cold tank is relatively large, so that the external heat source and the external cold source can be more effectively used to adjust the temperature of the fluid medium in the hot tank and the cold tank.

[0094] As can be seen from the above, the carbon dioxide storage system for compressed carbon dioxide energy storage provided in the embodiment of this specification comprises at least: an adsorption tank, a heat exchanger, a hot tank and a cold tank; wherein, a plurality of first porous tubes and a plurality of second porous tubes are alternately arranged along the axial direction in the adsorption tank, and corresponding adsorbent particle layers are further provided between adjacent first porous tubes and second porous tubes; one end of the first porous tube is closed, and the other end is connected to the inlet main pipe; one end of the second porous tube is closed, and the other end is connected to the outlet main pipe; the inlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a first pipe, and a first circulation pump is further provided on the first pipe; the outlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a second pipe The inlet is connected to the inlet; the inlet main pipe and the outlet main pipe are connected through a third pipeline; the adsorption tank also includes an inlet end and an outlet end; the outlet end is connected to the compressor of the compressed carbon dioxide energy storage system, and is connected to the first inlet of the heat exchanger through a fourth pipeline; the inlet end is connected to the expander of the compressed carbon dioxide energy storage system; the third pipeline is provided with a first switch valve, the second pipeline is provided with a second switch valve, and the fourth pipeline is provided with a third switch valve; the hot tank and the cold tank store corresponding fluid media; the hot tank and the cold tank are connected to the second inlet of the liquid side of the heat exchanger through a fifth pipeline, and a second circulation pump is also provided on the fifth pipeline; the hot tank and the cold tank are also connected to the second outlet of the liquid side of the heat exchanger through a sixth pipeline.

[0095] See Figure 4 As shown, the embodiments of this specification also provide a control method for a carbon dioxide storage system for compressed carbon dioxide energy storage. The specific implementation of the method may include the following:

[0096] S401: In the desorption mode, the second on-off valve is opened, and the first circulation pump is started to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline;

[0097] S402: Based on the heat exchanger, the first carbon dioxide gas is heated by the fluid medium in the hot tank to obtain the heated second carbon dioxide gas and the cooled fluid medium; and the cooled fluid medium is stored in the cold tank;

[0098] S403: Controlling the second carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe; and utilizing the plurality of first porous tubes to spray multiple beams of the second carbon dioxide gas toward corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas;

[0099] S404: Control the third carbon dioxide gas to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0100] In specific implementation, in the desorption mode, the second switch valve can be opened, and the first circulation pump can be started (corresponding to the first bypass heat circulation mode), and the heat exchanger can be started. The hot tank and the cold tank can be used in combination to circulate and heat the adsorbent particle layer in the adsorption tank to efficiently and fully desorb and release the carbon dioxide gas stored in the adsorbent particles.

[0101] Specifically, in the desorption mode, a first bypass heat cycle method can be adopted. First, the second switch valve is opened to connect the second pipeline; then the first circulation pump is started to drive the first carbon dioxide gas currently in a free state in the adsorption tank (that is, the carbon dioxide gas currently not adsorbed in the adsorption tank) to enter the outlet main pipe through the reflux port of the second pipeline; then through the outlet main pipe, it is transported to the heat exchanger through the first inlet on the gas side of the second pipeline.

[0102] After the first carbon dioxide gas is delivered to the heat exchanger, the heat exchanger is used to heat the first carbon dioxide gas using the fluid medium in the hot tank to obtain the heated second carbon dioxide gas and the cooled fluid medium; and the cooled fluid medium is stored in the cold tank. Specific implementation may include the following:

[0103] S1: Open the fourth on-off valve and the seventh on-off valve to connect the heating circuit; and start the second circulation pump to control the fluid medium (e.g., high-temperature fluid medium) in the hot tank to flow out and pass through the heat exchanger to heat the first carbon dioxide gas (e.g., room-temperature carbon dioxide gas) passing through the heat exchanger to obtain the heated second carbon dioxide gas (e.g., high-temperature carbon dioxide gas) and the cooled fluid medium (e.g., low-temperature fluid medium);

[0104] S2: Control the cooled fluid medium to pass through the sixth pipeline and the fourth branch and be stored in the cold tank.

[0105] In the process of heating the first carbon dioxide gas by using a hot tank and a cold tank in combination with a heat exchanger in the above manner, the internal air pressure of the hot tank and the cold tank can be dynamically adjusted by providing an air pressure balancing pipeline between the hot tank and the cold tank, so that the high-temperature fluid medium can flow out of the hot tank smoothly; at the same time, the low-temperature fluid medium can flow into the cold tank smoothly.

[0106] Specifically, the first circulation pump can be used to control the second carbon dioxide gas to flow from the first outlet on the gas side of the heat exchanger along the first pipeline into the inlet main pipe; then enter the multiple first porous tubes through the inlet main pipe; and use the multiple first porous tubes to simultaneously spray multiple beams of second carbon dioxide gas to adjacent adsorbent particle layers to fully and comprehensively heat the adsorbent particles in the adsorbent particle layer, so that the adsorbent particles can desorb and release the stored carbon dioxide gas, which is recorded as the third carbon dioxide gas.

[0107] Among them, most of the third carbon dioxide gas released by desorption in the adsorption tank will pass through the outlet end along the corresponding pipeline to the compression energy storage system to be provided to the compressor for compression energy storage.

[0108] In some embodiments, after desorbing the third carbon dioxide gas, refer to Figure 1 As shown, when the method is specifically implemented, it may further include:

[0109] The first part of the third carbon dioxide gas is controlled to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank; at the same time, the second part of the third carbon dioxide gas is controlled to pass through the second porous tube and the second pipeline into the heat exchanger to circulate and heat the adsorbent particles in the adsorbent particle layer.

[0110] Specifically, the second portion of gas can enter the plurality of second porous tubes through the reflux port of the second porous tube and enter the outlet main pipe; then return to the heat exchanger through the second pipe to continue heating to obtain the heated second carbon dioxide gas; and then the above process can be repeated to control the second carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe; and use the plurality of first porous tubes to spray multiple beams of the second carbon dioxide gas to the corresponding adsorbent particle layer to heat the adsorbent particles in the adsorbent particle layer and desorb the third carbon dioxide gas, thereby realizing cyclic heating of the adsorbent particles in the adsorbent particle layer, so that the adsorbent particles release the stored carbon dioxide gas as thoroughly as possible.

[0111] In some embodiments, during the process of using multiple first porous tubes to spray multiple beams of second carbon dioxide gas onto corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas, the method may further include the following steps when implemented:

[0112] S1: collect temperature parameters of the adsorbent particle layer;

[0113] S2: adjusting the opening of the first regulating valve and / or the opening of the second regulating valve corresponding to the adsorbent particle layer according to the temperature parameter.

[0114] During specific implementation, the flow rate parameters of the first porous tube and the flow rate parameters of the second porous tube can be collected simultaneously.

[0115] Accordingly, the preset adjustment strategy set can be queried based on the temperature parameters of the adsorbent particle layers corresponding to the first porous tube and the second porous tube (i.e., the adsorbent particle layers adjacent to the first porous tube and the second porous tube), combined with the flow rate parameters of the first porous tube and the flow rate parameters of the second porous tube, to determine a matching target adjustment strategy; and then, based on the target adjustment strategy, the current opening of the first regulating valve and / or the opening of the second regulating valve can be adjusted in a targeted manner to effectively reduce the flow resistance of the gas and improve the overall heating effect, thereby being able to release the third carbon dioxide gas in the adsorption tank relatively more stably and efficiently.

[0116] The preset adjustment strategy set may include a plurality of preset adjustment strategies, each of which corresponds to at least one combination of a temperature parameter range, a flow rate parameter range of the first porous tube, and a flow rate parameter range of the second porous tube.

[0117] Before specific implementation, multiple sample experimental tests can be carried out, and multiple adjustment records and adjustment results under different conditions (for example, different temperature parameters, flow rate parameters of the first porous tube, and flow rate parameter combinations of the second porous tube) in the sample experimental test process can be collected; based on the adjustment results, sample adjustment records that meet the requirements are screened out from the multiple adjustment records; the multiple sample adjustment records are then clustered to obtain common characteristic adjustment parameter groups corresponding to different conditions; and based on the common characteristic parameter groups, multiple preset adjustment strategies are constructed to obtain a preset adjustment strategy set.

[0118] In some embodiments, the method may also include the following when implemented: monitoring the temperature of the adsorbent particle layer, and when the temperature of the adsorbent particle layer is greater than or equal to a preset temperature threshold (for example, a preset first reference temperature), stopping the operation of the carbon dioxide storage system for compressed carbon dioxide energy storage.

[0119] Specifically, when stopping the system operation, the first circulation pump and the second circulation pump can be turned off first; and then the heat exchanger and other related components can be turned off.

[0120] In some embodiments, see Figure 5 As shown, when the method is implemented, it may also include the following contents:

[0121] S501: In the adsorption mode, controlling the fourth carbon dioxide gas after the compressed carbon dioxide energy storage system expands and releases energy to enter the adsorption tank through the inlet end of the adsorption tank to cool the adsorbent particle layer during the adsorption process to obtain the fifth carbon dioxide gas after heating;

[0122] S502: Open the second on-off valve and start the first circulation pump to drive the fifth carbon dioxide gas in the adsorption tank into the heat exchanger through the second pipeline;

[0123] S503: Cooling the fifth carbon dioxide gas using the fluid medium in the cold tank using the heat exchanger to obtain cooled sixth carbon dioxide gas and heated fluid medium; and storing the heated fluid medium in the hot tank;

[0124] S504: Control the sixth carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe; and use the plurality of first porous tubes to spray multiple beams of the sixth carbon dioxide gas to the corresponding adsorbent particle layers, so that the sixth carbon dioxide gas is adsorbed and stored in the adsorbent particles.

[0125] During specific implementation, in the adsorption mode, the second switch valve can be opened, and the first circulation pump can be started (corresponding to the first bypass heat circulation mode), and the heat exchanger can be started. The hot tank and the cold tank can be used in combination to circulate and heat the adsorbent particle layer in the adsorption tank, so as to efficiently and fully use the adsorbent particles to adsorb and store carbon dioxide gas.

[0126] The heat exchanger is used to cool the fifth carbon dioxide gas using the fluid medium in the cold tank to obtain the cooled sixth carbon dioxide gas and the heated fluid medium; and the heated fluid medium is stored in the hot tank. The specific implementation may include the following:

[0127] S1: Open the fifth on-off valve and the sixth on-off valve; and start the second circulation pump to control the fluid medium (e.g., low-temperature fluid medium) in the cold tank to flow out and cool the fifth carbon dioxide gas through the heat exchanger to obtain the cooled sixth carbon dioxide gas and the heated fluid medium (e.g., high-temperature fluid medium);

[0128] S2: Control the heated fluid medium to pass through the sixth pipeline and the second branch and be stored in the hot tank.

[0129] In the process of cooling the first carbon dioxide gas by combining a hot tank and a cold tank with a heat exchanger in the above manner, the internal air pressure of the hot tank and the cold tank can be dynamically adjusted by providing an air pressure balancing pipeline between the hot tank and the cold tank, so that the low-temperature fluid medium can flow out of the cold tank smoothly; at the same time, the high-temperature fluid medium can flow into the hot tank smoothly.

[0130] Specifically, multiple first porous tubes can be used to spray multiple beams of sixth carbon dioxide gas to the corresponding adsorbent particle layers, and relatively effectively cool the adjacent adsorbent particle layers to reduce the temperature of the adsorbent particle layers, thereby avoiding the influence of excessive temperature on the adsorption effect of the adsorbent particles, thereby enabling the adsorbent particles to adsorb relatively more carbon dioxide gas.

[0131] In specific implementation, the carbon dioxide gas in the adsorption tank can be used to circulate and cool the adsorbent particle layer in the above manner to continuously recover the newly generated heat in the adsorbent particle layer, and the adsorbent particle layer is always maintained within a suitable temperature range, so that the adsorbent particles can continue to adsorb carbon dioxide gas well.

[0132] In some embodiments, in addition to the first bypass heat cycle mode, a second bypass heat cycle mode may also be used.

[0133] Specifically, in the desorption mode, a second bypass circulation method can be used. The first switch valve and the third switch valve can be opened first, and the third pipeline and the fourth pipeline can be opened at the same time. Then, the first circulation pump can be started to drive the first carbon dioxide gas currently in a free state in the adsorption tank through the fourth pipeline and the first inlet on the gas side to enter the heat exchanger for heating. The heated second carbon dioxide gas can then enter the inlet main pipe and the outlet main pipe respectively through the first pipeline and the third pipeline; then enter the multiple first porous tubes and multiple second porous tubes through the inlet main pipe and the outlet main pipe. Then, the first porous tube and the second porous tube can be used simultaneously to spray multiple beams of carbon dioxide gas to the corresponding adsorbent particle layer to perform a more effective heating operation on the adsorbent particle layer, thereby more efficiently releasing and obtaining carbon dioxide gas.

[0134] In the above process, due to the use of the second bypass circulation method, which is different from the first bypass circulation method, the carbon dioxide gas flows ejected from the first porous tube and the second porous tube are in opposite directions, which will increase the upward flow resistance of the desorbed carbon dioxide gas to a certain extent, and at the same time increase the power consumption of the first circulation pump; but it can also relatively further improve the heat exchange efficiency and heat exchange rate, and increase the carbon dioxide desorption rate.

[0135] Similarly, in the adsorption mode, a second bypass circulation method can also be used. First, the first and third on-off valves are opened, while the third and fourth pipelines are opened simultaneously. The first circulation pump is then activated to cool the adsorbent particle layer during the adsorption process with the fourth carbon dioxide gas inputted from the adsorption tank through the inlet, thereby producing a heated fifth carbon dioxide gas. The fifth carbon dioxide gas is then passed through the fourth pipeline and the first inlet of the gas side into the heat exchanger for cooling, thereby producing a cooled sixth carbon dioxide gas. The sixth carbon dioxide gas is then controlled to flow through the first and third pipelines, through the inlet main pipe, and the outlet main pipe, respectively, into the plurality of first porous tubes and the plurality of second porous tubes. The plurality of first porous tubes and the plurality of second porous tubes are then simultaneously used to spray multiple streams of carbon dioxide gas toward the corresponding adsorbent particle layer, thereby more effectively cooling the adsorbent particle layer, thereby enabling the adsorbent particles to more efficiently and stably adsorb carbon dioxide gas.

[0136] In some embodiments, during specific implementation, the operating reference parameters of the compressed carbon dioxide energy storage system (including: power generation efficiency, expander outlet pressure, etc.) and the current operating requirements can be obtained first; then, based on the operating reference parameters of the compressed carbon dioxide energy storage system and combined with the current operating requirements, a matching target bypass circulation mode is selected from the first bypass circulation mode and the second bypass circulation mode; then, the target bypass circulation mode is adopted, combined with the start-up heat exchanger, and the hot tank and the cold tank are used in combination to better achieve the adsorption or desorption of carbon dioxide gas.

[0137] As can be seen from the above, the control method of the carbon dioxide storage system for compressed carbon dioxide energy storage provided in the embodiments of this specification, by fully and effectively utilizing the relevant structures of the carbon dioxide storage system for compressed carbon dioxide energy storage, can, on the one hand, better cooperate with the operation of the compressed carbon dioxide energy storage system, increase the contact area with the adsorbent particles during operations such as carbon dioxide adsorption and desorption, and improve the heat exchange efficiency; on the other hand, it can also effectively recover and utilize the heat generated during the above operations, reduce heat waste, and reduce overall energy consumption.

[0138] This specification provides a computer device, referring to Figure 6 The computer device includes a network communication port 601, a processor 602, and a memory 603, and the above structures are connected through internal cables so that each structure can perform specific data interaction.

[0139] The network communication port 601 may be used to receive a trigger instruction regarding the desorption mode.

[0140] The processor 602 can be specifically used to respond to a trigger instruction, open the second switch valve in the desorption mode, and start the first circulation pump to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline; based on the heat exchanger, use the fluid medium in the hot tank to heat the first carbon dioxide gas to obtain the heated second carbon dioxide gas and the cooled fluid medium; and store the cooled fluid medium in the cold tank; control the second carbon dioxide gas to enter the multiple first porous tubes through the inlet main pipe; and use the multiple first porous tubes to spray multiple beams of second carbon dioxide gas to the corresponding adsorbent particle layer to heat the adsorbent particles in the adsorbent particle layer and desorb the third carbon dioxide gas; control the third carbon dioxide gas to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0141] The memory 603 may be specifically used to store corresponding instruction programs and related intermediate data.

[0142] Based on the above method, the relevant structural performance of computer equipment can be effectively utilized, the data processing speed of electronic equipment can be improved, and data processing for controlling the carbon dioxide storage system for compressed carbon dioxide energy storage can be efficiently realized.

[0143] In this embodiment, the network communication port 601 can be a virtual port that is bound to different communication protocols, thereby being capable of sending or receiving different data. For example, the network communication port can be a port responsible for web data communication, a port responsible for FTP data communication, or a port responsible for email data communication. Furthermore, the network communication port can also be a physical communication interface or communication chip. For example, it can be a wireless mobile network communication chip, such as GSM or CDMA; it can also be a Wi-Fi chip; or it can be a Bluetooth chip.

[0144] In this embodiment, the processor 602 may be implemented in any suitable manner. For example, the processor may take the form of a microprocessor or a processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller, an embedded microcontroller, etc. This specification is not intended to limit this.

[0145] In this embodiment, the memory 603 may include multiple levels. In a digital system, anything that can store binary data can be a memory. In an integrated circuit, a circuit with a storage function that has no physical form is also called a memory, such as RAM, FIFO, etc. In a system, a storage device with a physical form is also called a memory, such as a memory stick, TF card, etc.

[0146] The embodiments of this specification also provide a computer-readable storage medium based on the above-mentioned control method of the carbon dioxide storage system for compressed carbon dioxide energy storage, wherein the computer-readable storage medium stores computer program instructions, which, when executed, implement the following: in the desorption mode, opening the second switch valve and starting the first circulation pump to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline; heating the first carbon dioxide gas using the fluid medium in the hot tank based on the heat exchanger to obtain the heated second carbon dioxide gas and the cooled fluid medium; and storing the cooled fluid medium in the cold tank; controlling the second carbon dioxide gas to enter the multiple first porous tubes through the inlet main pipe; and using the multiple first porous tubes to spray multiple beams of the second carbon dioxide gas to the corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas; and controlling the third carbon dioxide gas to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0147] In this embodiment, the storage medium includes, but is not limited to, random access memory (RAM), read-only memory (ROM), cache, hard disk drive (HDD), or memory card. The memory can be used to store computer program instructions. The network communication unit can be an interface configured in accordance with the standards specified by the communication protocol for network connection communication.

[0148] In this embodiment, the functions and effects specifically implemented by the program instructions stored in the computer-readable storage medium can be explained in comparison with other implementations and will not be repeated here.

[0149] The embodiments of this specification also provide a computer program product, which at least includes a computer program, and when the computer program is executed by a processor, implements the following method steps: in the desorption mode, open the second switch valve, and start the first circulation pump to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline; based on the heat exchanger, use the fluid medium in the hot tank to heat the first carbon dioxide gas to obtain the heated second carbon dioxide gas and the cooled fluid medium; and store the cooled fluid medium in the cold tank; control the second carbon dioxide gas to enter the multiple first porous tubes through the inlet main pipe; and use the multiple first porous tubes to spray multiple beams of second carbon dioxide gas to the corresponding adsorbent particle layer to heat the adsorbent particles in the adsorbent particle layer and desorb the third carbon dioxide gas; control the third carbon dioxide gas to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0150] See Figure 7 As shown, the embodiments of this specification also provide a control device for a carbon dioxide storage system for compressed carbon dioxide energy storage, which may specifically include the following structural modules:

[0151] The first operating module 701 may be specifically configured to, in the desorption mode, open the second on-off valve and start the first circulation pump to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline;

[0152] The heat exchange module 702 may be configured to heat the first carbon dioxide gas using the fluid medium in the hot tank based on the heat exchanger to obtain the heated second carbon dioxide gas and the cooled fluid medium; and store the cooled fluid medium in the cold tank;

[0153] The second operating module 703 may be specifically configured to control the second carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe, and to utilize the plurality of first porous tubes to spray multiple beams of the second carbon dioxide gas toward corresponding adsorbent particle layers, thereby heating the adsorbent particles in the adsorbent particle layers and desorbing the third carbon dioxide gas.

[0154] The third operation module 704 can be specifically used to control the third carbon dioxide gas to be transported through the outlet of the adsorption tank to the compressed carbon dioxide energy storage system, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

[0155] In some embodiments, after desorbing the third carbon dioxide gas, the device can also be used, when implemented, to: control the first portion of the third carbon dioxide gas to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank; at the same time, control the second portion of the third carbon dioxide gas to pass through the second porous tube and the second pipeline into the heat exchanger to circulate and heat the adsorbent particles in the adsorbent particle layer.

[0156] In some embodiments, when using multiple first porous tubes to spray multiple beams of second carbon dioxide gas to the corresponding adsorbent particle layer to heat the adsorbent particles in the adsorbent particle layer and desorb the third carbon dioxide gas, the device can also be used to: collect temperature parameters of the adsorbent particle layer; and adjust the opening of the first regulating valve and / or the opening of the second regulating valve corresponding to the adsorbent particle layer according to the temperature parameters.

[0157] In some embodiments, when the device is implemented, it can also be used to: in the adsorption mode, control the fourth carbon dioxide gas after the compressed carbon dioxide energy storage system expands and releases energy to enter the adsorption tank through the inlet end of the adsorption tank, so as to cool the adsorbent particle layer during the adsorption process and obtain the heated fifth carbon dioxide gas; open the second switch valve, and start the first circulation pump to drive the fifth carbon dioxide gas in the adsorption tank into the heat exchanger through the second pipeline; based on the heat exchanger, use the fluid medium in the cold tank to cool the fifth carbon dioxide gas to obtain the cooled sixth carbon dioxide gas and the heated fluid medium; and store the heated fluid medium in the hot tank; control the sixth carbon dioxide gas to enter the multiple first porous tubes through the inlet main pipe; and use the multiple first porous tubes to spray multiple beams of sixth carbon dioxide gas to the corresponding adsorbent particle layer, so that the sixth carbon dioxide gas is adsorbed and stored in the adsorbent particles.

[0158] It should be noted that the units, devices or modules described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. For the convenience of description, the above devices are described in terms of functions and are divided into various modules and described separately. Of course, when implementing this specification, the functions of each module can be implemented in the same or multiple software and / or hardware, or the module that implements the same function can be implemented by a combination of multiple sub-modules or sub-units. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0159] As can be seen from the above, the control device of the carbon dioxide storage system for compressed carbon dioxide energy storage provided in the embodiments of this specification can, on the one hand, better cooperate with the operation of the compressed carbon dioxide energy storage system, increase the contact area with the adsorbent particles during operations such as carbon dioxide adsorption and desorption, and improve the heat exchange efficiency; on the other hand, it can also effectively recover and utilize the heat generated during the above operations, reduce heat waste, and reduce overall energy consumption.

[0160] In a specific scenario example, the carbon dioxide storage system and control method for compressed carbon dioxide energy storage provided in this specification can be applied to implement a low-pressure, high-density carbon dioxide gas storage device and operation. The specific implementation process may include the following.

[0161] In this example scenario, we consider the following issues often encountered by existing CO2 storage systems: 1. Within the adsorption tank, the CO2 plunger flow generated by the bypass heat cycle directly exchanges heat with the adsorbent. The CO2 flow path through the large adsorbent layer is long, resulting in a long heat exchange cycle, which means the adsorbent heating or cooling rate and heat exchange efficiency are low. 2. Flow resistance is high. The longer the axial dimension of the adsorbent particle layer in a large adsorption tank, the greater the flow resistance along the path. Reducing the CO2 flow rate can reduce resistance, but this also further reduces the heat exchange power and efficiency of the bypass heat cycle system. 3. High heat consumption. The bypass heat cycle system requires a large amount of additional high-temperature heat to heat the adsorbent and desorb the CO2. While industrial waste heat and waste heat can be used as heat sources, this limits its application scenarios. Using electricity, gas, or other sources to provide heat entirely is not economical. 4. High heat loss. At the beginning of the adsorption process, the bypass heat cycle system cools the adsorbent particles that have been heated by desorption, and the excess heat is discharged to the outside. The adsorption heat generated during the adsorption process is also discharged to the outside, failing to fully recycle this heat, resulting in heat loss and waste.

[0162] In response to the above problems and in combination with the root causes of the above problems, in this scenario example, the following considerations are considered: First, a porous tube bundle (e.g., multiple first porous tubes, multiple second porous tubes) can be set up in the adsorption tank to form a bypass heat circulation loop with the pipes, valves, and circulation pumps. The porous tube bundle has multiple nozzles and reflux ports, which can simultaneously eject multiple streams of carbon dioxide gas to directly contact and exchange heat with the adsorbent particles, forming an organized inflow and reflux cycle, greatly increasing the heat exchange contact area, increasing the uniformity of gas flow in the adsorbent particle layer, improving the heat exchange efficiency and heat exchange power, and reducing the flow resistance of the bypass heat circulation system. Secondly, according to the temperature distribution of the adsorbent particle layer along the axial direction, a number of regulating valves (e.g., a first regulating valve, a second regulating valve) set at different height positions (e.g., different positions along the axial direction of the adsorption tank) can be used to adjust the porous tube injection flow rate in different temperature zones in real time, adjust the heat exchange rate in different temperature zones, reduce the resistance of the delivery pipeline, and reduce the power consumption of the circulation pump. In addition, cold and hot storage tanks (for example, cold tanks and hot tanks) can be introduced and set up. Through the gas-liquid heat exchange of the heat exchanger, the heat discharged by cooling the high-temperature adsorbent during the desorption process and the adsorption heat generated during the adsorption process can be stored to achieve internal recycling, reduce external heat demand, and improve economy and scenario applicability.

[0163] For specific implementation, please refer to Figure 1 As shown, a low-pressure and high-density carbon dioxide gas storage device is constructed, which mainly includes: an adsorption tank 1, a first porous tube 2, a first regulating valve 3, a second regulating valve 301, an inlet main pipe 4, a support structure 5 (for example, a supporting filter), an inlet 6 (for example, an inlet end), a first switch valve 7, a second porous tube 8, an outlet main pipe 9, a second switch valve 901, an adsorbent particle layer 10, an outlet 11 (for example, an outlet end), a third switch valve 12, a heat exchanger 13, a first circulation pump 14, a second circulation pump 15, a fourth switch valve 16, a fifth switch valve 17, a hot tank 18, a cold tank 19, a sixth switch valve 20, a seventh switch valve 21, a first heat exchange coil 22, and a second heat exchange coil 23.

[0164] like Figure 1 and Figure 3As shown, the adsorption tank 1 can be a vertical long column (or other shapes), with an outlet 11 provided at the top and an inlet 6 provided at the bottom. Inside the adsorption tank 1, there are a number of parallel and horizontally arranged first porous tubes 2 and second porous tubes 8, and the porous tubes are round tubes or square tubes. One end of the several first porous tubes 2 and second porous tubes 8 is closed, and the other ends are fixedly connected to the first header 401 and the second header 902, respectively, to form a porous tube row. The porous tube row composed of the first porous tubes 2 and the second porous tubes 8 is alternately arranged at equal intervals along the axial direction of the adsorption tank 1. The first header 401 and the second header 902 are connected to the inlet main pipe 4 and the outlet main pipe 9 through the first regulating valve 3 and the second regulating valve 301, respectively.

[0165] Inside the adsorption tank 1, a layer of adsorbent particles 10 is filled between the porous tube rows. These adsorbent particles are spherical, cylindrical, or other regularly shaped solid particles made from materials such as artificial zeolite 13X or activated carbon. A support filter 5 is installed at the bottom of the adsorption tank 1, located above the inlet 6. The support filter 5 is made of a support structure and a filter screen, supporting the layer of adsorbent particles 10. The pore size of the filter screen is smaller than the diameter of the adsorbent particles.

[0166] The inlet main pipe 4 and the outlet main pipe 9 are connected via a first on-off valve 7. The inlet main pipe 4 is connected to the gas outlet of the heat exchanger 13 via a first circulation pump 14, and the outlet main pipe 9 is connected to the gas inlet of the heat exchanger 13 via a second on-off valve 901. The outlet 11 is connected to the gas inlet of the heat exchanger 13 via a branch pipe (e.g., a fourth pipe), which is provided with a third on-off valve 12.

[0167] The liquid-side inlet of the heat exchanger 13 is connected to the bottoms of the hot tank 18 and the cold tank 19, respectively, via a second circulation pump 15 and the fourth and fifth on-off valves 16 and 17 on the two branch lines. The liquid-side outlet of the heat exchanger 13 is connected to the tops of the hot tank 18 and the cold tank 19, respectively, via a sixth and seventh on-off valves 20 and 21. The hot tank 18 and the cold tank 19 are connected to each other via pipes. A heat exchange coil 22 (e.g., a first heat exchange coil) is provided within the hot tank 18, and a heat exchange coil 23 (e.g., a second heat exchange coil) is provided within the cold tank 19 for exchanging heat with the outside and adjusting the temperature of the hot or cold tank. The heat storage and heat transfer medium in the hot and cold tanks 18 and 19 can be water, molten salt, thermal oil, or other substances.

[0168] like Figure 2As shown, the first porous tube 2 is provided with a conical nozzle 201, inside which is a filter screen 202 (e.g., a first filter screen). The pore size of the filter screen is smaller than the diameter of the adsorbent particles. The second porous tube 8 is provided with a wide-mouthed reflux port 801, inside which is a filter screen 802 (e.g., a second filter screen). The nozzle 201 is horizontally distributed at the upper and lower portions of the first porous tube 2, and the reflux port 801 is horizontally distributed at the upper and lower portions of the second porous tube 8.

[0169] When the low-pressure, high-density carbon dioxide gas storage device is used, the carbon dioxide energy storage system begins to store energy, and the carbon dioxide gas storage device operates in a desorption mode, specifically as follows: the second switch valve 901, the first regulating valve 3, the second regulating valve 301, the fourth switch valve 16, and the seventh switch valve 21 are opened, and the second circulation pump 15 is started to allow the hot working medium in the hot tank 18 to enter the heat exchanger 13 to heat the carbon dioxide gas, and the hot working medium becomes a cold working medium and enters the cold tank 19 for storage. The first circulating pump 14 is activated to drive the free carbon dioxide gas to absorb heat in the heat exchanger 13, turning it into high-temperature carbon dioxide. This heat is then released through the inlet main pipe 4 and enters the first porous tube 2. The high-temperature carbon dioxide is ejected through the nozzles 201 provided on the first porous tube 2, passing through the pores of the adsorbent particle layer 10 at the upper and lower portions of the first porous tube 2. During this process, the carbon dioxide directly heats the adsorbent particles, causing them to desorb carbon dioxide gas (output through the outlet 11). The heat-released and cooled carbon dioxide gas enters the second porous tube 8 located at the upper and lower portions of the first porous tube 2, and returns to the heat exchanger 13 through the outlet main pipe 9. After reheating with the hot working medium and raising its temperature, it then passes through the first porous tube 2 and enters the adsorbent particle layer, heating and desorbing it to produce carbon dioxide, thus forming a circulating heating system. Operation is terminated when the temperature of all adsorbent particles reaches the set value. In this process, the opening of the first regulating valve 3 or the second regulating valve 301 is adjusted to control the carbon dioxide circulating heating flow rate, thereby controlling the rate of carbon dioxide desorption.

[0170] During the CO2 energy storage system's energy release process, the CO2 gas storage device operates in adsorption mode. Cold CO2 gas from the expander outlet enters adsorption tank 1 through inlet 6. Simultaneously, a CO2 bypass circulation method, similar to that used in the desorption mode, cools the high-temperature adsorbent particle layer formed after desorption within tank 1. However, a tank heat storage mode is employed: the fifth and sixth on-off valves 17 and 20 are opened, allowing the cold working fluid stored in cold tank 19 to enter the circulating CO2 through heat exchanger 13, transferring heat from the high-temperature adsorbent particles to form a hot working fluid that is stored in hot tank 18. The cooled adsorbent particle layer adsorbs the CO2 gas entering through inlet 6. The resulting high-temperature adsorption heat is also removed through the bypass circulation and stored in hot tank 18 via heat exchanger 13.

[0171] The above two modes (eg, desorption mode and adsorption mode) operate alternately to meet the energy storage and release requirements of the carbon dioxide compression energy storage system.

[0172] In addition, a second bypass heat cycle method can also be used to heat or cool the adsorbent particle layer, that is, open the first switch valve 7 and the third switch valve 12, start the first circulation pump 14, and the carbon dioxide gas enters the first porous tube 2 and the second porous tube 8 through the inlet main pipe 4 and the outlet main pipe 9 respectively, and is sprayed to the adsorbent particle layer by the nozzle 201 and the reflux port 801 respectively, directly contacts and exchanges heat with the adsorbent particles, flows upward through the pores of the adsorbent particle layer 10, and finally enters the heat exchanger 13 from the outlet 11 through the branch pipe and the third switch valve 12, forming a heat exchange cycle.

[0173] Through the above scenario examples, the carbon dioxide storage system and control method for compressed carbon dioxide energy storage provided in this specification are verified. Since a porous tube bundle is set in the adsorption tank, it forms a bypass heat circulation loop with the pipeline, valve and circulation pump. The porous tube bundle simultaneously ejects multiple streams of carbon dioxide gas to directly contact and exchange heat with the adsorbent particles, greatly increasing the heat exchange contact area, improving the heat exchange efficiency and heat exchange power, and reducing the flow resistance of the bypass heat circulation system. According to the temperature distribution of the adsorbent particle layer along the axial direction, the porous tube injection flow rate in different temperature zones can be adjusted in real time by setting a number of regulating valves, and the heat exchange amount in different temperature zones can be adjusted in a targeted manner, and the resistance of the transmission pipeline can be reduced, and the power consumption of the circulation pump can be reduced. In addition, the bypass heat circulation system is used to set cold and hot storage tanks. Through the heat exchange of the heat exchanger, the heat discharged by cooling the high-temperature adsorbent during the desorption process and the adsorption heat generated during the adsorption process are stored, thereby realizing internal recycling, reducing external heat demand, and improving economy and scenario applicability.

[0174] Although this specification provides the method operation steps as described in the embodiments or flow charts, more or fewer operation steps may be included based on conventional or non-creative means. The order of steps listed in the embodiments is only one way of executing the order of many steps and does not represent the only execution order. When the device or client product in practice is executed, it can be executed in sequence or in parallel according to the method shown in the embodiments or the drawings (for example, a parallel processor or a multi-threaded processing environment, or even a distributed data processing environment). The term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, product or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, product or device. In the absence of more restrictions, it is not excluded that there are other identical or equivalent elements in the process, method, product or device including the elements. Words such as first and second are used to represent names and do not represent any particular order.

[0175] Those skilled in the art will also appreciate that, in addition to implementing the controller in pure computer-readable program code, it is entirely possible to implement the same functionality by logically programming the method steps in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, and the like. Therefore, such a controller can be considered a hardware component, and the devices included therein for implementing various functions can also be considered structures within the hardware component. Alternatively, the devices for implementing various functions can be considered both software modules implementing the method and structures within the hardware component.

[0176] This specification may be described in the general context of computer-executable instructions, such as program modules, executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, and the like that perform specific tasks or implement specific abstract data types. This specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communications network. In a distributed computing environment, program modules may be located in local and remote computer-readable storage media, including storage devices.

[0177] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that this specification can be implemented by means of software plus the necessary general hardware platform. Based on this understanding, the technical solution of this specification can essentially be embodied in the form of a software product. This computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a mobile terminal, a server, or a network device, etc.) to execute the methods described in various embodiments or certain parts of the embodiments of this specification.

[0178] The various embodiments in this specification are described in a progressive manner. References to the common or similar parts of the various embodiments are sufficient. Each embodiment focuses on the differences from the other embodiments. This specification can be used in a variety of general-purpose or specialized computer system environments or configurations. For example, personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, and distributed computing environments that include any of the above systems or devices.

[0179] Although the present specification is described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present specification without departing from the spirit of the present specification. It is intended that the appended claims include these modifications and variations without departing from the spirit of the present specification.

Claims

1. A carbon dioxide storage system for compressed carbon dioxide energy storage, characterized in that: Connected to the compressed carbon dioxide energy storage system, it at least includes: an adsorption tank, a heat exchanger, a hot tank and a cold tank; wherein, A plurality of first porous tubes and a plurality of second porous tubes are alternately arranged along the axial direction in the adsorption tank, and corresponding adsorbent particle layers are further provided between adjacent first porous tubes and second porous tubes; one end of the first porous tube is closed, and the other end is connected to the inlet main pipe; one end of the second porous tube is closed, and the other end is connected to the outlet main pipe; the inlet main pipe is connected to the first outlet on the gas side of the heat exchanger through a first pipe, and a first circulation pump is further provided on the first pipe; the outlet main pipe is connected to the first inlet on the gas side of the heat exchanger through a second pipe; the inlet main pipe and the outlet main pipe are connected by a third pipe; The adsorption tank further includes an inlet and an outlet; the outlet is connected to the compressor of the compressed carbon dioxide energy storage system and is connected to the first inlet of the heat exchanger through a fourth pipeline; the inlet is connected to the expander of the compressed carbon dioxide energy storage system; The third pipeline is provided with a first switch valve, the second pipeline is provided with a second switch valve, and the fourth pipeline is provided with a third switch valve; The hot tank and the cold tank store corresponding fluid media; the hot tank and the cold tank are connected to the second inlet of the liquid side of the heat exchanger through a fifth pipeline, and a second circulation pump is also provided on the fifth pipeline; the hot tank and the cold tank are also connected to the second outlet of the liquid side of the heat exchanger through a sixth pipeline.

2. The system according to claim 1, wherein: A plurality of nozzles are respectively arranged above and below the first porous tube, and a plurality of reflux ports are respectively arranged above and below the second porous tube.

3. The system according to claim 1, wherein: A first regulating valve is provided between the first porous tube and the inlet main pipe, and a second regulating valve is provided between the second porous tube and the outlet main pipe.

4. The system according to claim 1, wherein: One end of the hot tank is connected to the fifth pipeline through the first branch, and the other end is connected to the sixth pipeline through the second branch; one end of the cold tank is connected to the fifth pipeline through the third branch, and the other end is connected to the sixth pipeline through the fourth branch; The first branch is provided with a fourth switch valve, the third branch is provided with a fifth switch valve, the second branch is provided with a sixth switch valve, and the fourth branch is provided with a seventh switch valve.

5. The system according to claim 3, wherein: A first header is connected between the first regulating valve and the first porous pipe in the same horizontal plane, and a second header is connected between the second regulating valve and the second porous pipe in the same horizontal plane.

6. A control method for a carbon dioxide storage system for compressed carbon dioxide energy storage based on any one of claims 1 to 5, characterized in that: include: In the desorption mode, the second switch valve is opened, and the first circulation pump is started to drive the first carbon dioxide gas in the free state in the adsorption tank into the heat exchanger through the second pipeline; Based on the heat exchanger, the first carbon dioxide gas is heated by the fluid medium in the hot tank to obtain the heated second carbon dioxide gas and the cooled fluid medium; and the cooled fluid medium is stored in the cold tank; Controlling the second carbon dioxide gas to enter the plurality of first porous tubes through the inlet main pipe; and utilizing the plurality of first porous tubes to spray multiple beams of the second carbon dioxide gas to corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas; The third carbon dioxide gas is controlled to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank, so as to cooperate with the compressed carbon dioxide energy storage system to store electrical energy through compressed energy storage.

7. The method according to claim 6, characterized in that After desorbing the third carbon dioxide gas, the method further includes: The first part of the third carbon dioxide gas is controlled to be transported to the compressed carbon dioxide energy storage system through the outlet end of the adsorption tank; at the same time, the second part of the third carbon dioxide gas is controlled to pass through the second porous tube and the second pipeline into the heat exchanger to circulate and heat the adsorbent particles in the adsorbent particle layer.

8. The method according to claim 6, characterized in that In the process of using the plurality of first porous tubes to spray a plurality of second carbon dioxide gas streams to the corresponding adsorbent particle layers to heat the adsorbent particles in the adsorbent particle layers and desorb the third carbon dioxide gas, the method further includes: Collecting temperature parameters of the adsorbent particle layer; According to the temperature parameter, the opening degree of the first regulating valve and / or the opening degree of the second regulating valve corresponding to the adsorbent particle layer is adjusted.

9. The method according to claim 6, characterized in that The method further comprises: In the adsorption mode, the fourth carbon dioxide gas after the compressed carbon dioxide energy storage system expands and releases energy is controlled to enter the adsorption tank through the inlet end of the adsorption tank to cool the adsorbent particle layer during the adsorption process to obtain the fifth carbon dioxide gas after heating; Open the second on-off valve and start the first circulation pump to drive the fifth carbon dioxide gas in the adsorption tank into the heat exchanger through the second pipeline; Based on the heat exchanger, the fifth carbon dioxide gas is cooled by using the fluid medium in the cold tank to obtain the cooled sixth carbon dioxide gas and the heated fluid medium; and the heated fluid medium is stored in the hot tank; The sixth carbon dioxide gas is controlled to enter the plurality of first porous tubes through the inlet main pipe; and the plurality of first porous tubes are used to spray multiple beams of the sixth carbon dioxide gas to the corresponding adsorbent particle layers, so that the sixth carbon dioxide gas is adsorbed and stored in the adsorbent particles.

10. A computer device, characterized in that: The method comprises a processor and a memory for storing processor-executable instructions, wherein the processor implements the steps of the method according to any one of claims 6 to 9 when executing the instructions.

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