Carbon capture and high-quality air supply combined heat and power system and method

Abstract

The invention discloses a combined heat and power system and method for carbon capture and high-quality air supply. A wind and light power plant, a storage battery and a gravity energy storage device are connected with a regional power grid, and the regional power grid is connected with a power interface of a direct air carbon capture device, a power interface of a building air supply device and a power interface required by a user; an outlet of the hot pipeline is communicated with a heat release side inlet of the steam heat pump, a heat release side outlet of the steam heat pump is communicated with the cold pipeline, a heat absorption side outlet of the steam heat pump is communicated with a steam inlet of the direct air carbon capture device, and a carbon dioxide and steam outlet of the direct air carbon capture device is communicated with a heat release side inlet of the condenser. According to the system and the method, various problems caused by renewable energy source volatility and intermittency can be solved, and meanwhile, coupling of a direct air carbon capture technology and an energy system is realized.

Description

Technical Field

[0001] The present invention belongs to the field of integrated energy technology and relates to a heat and power cogeneration system and method for carbon capture and high-quality air supply. Background Art

[0002] Over the past century, the global average temperature has continued to rise, triggering a series of climate problems, such as melting glaciers, deteriorating ecological environment, and frequent extreme climate. The current consensus on this issue is that it is caused by large-scale greenhouse gas emissions. The development of green renewable energy and carbon capture technology can effectively solve the contradiction between growing energy demand and carbon emission reduction. Direct air carbon capture technology has the advantages of flexible installation, sustainable use, and no need to consider the impact of impurity gases. It provides a flexible and sustainable response plan for achieving carbon emission reduction. However, the current research on the coupling of direct air carbon capture technology and energy systems is still in its infancy, and traditional integrated energy solutions still have problems with energy supply mismatch, energy waste and carbon emissions. The use of renewable energy such as wind and solar to supply energy to users has been widely studied, but its volatility and intermittency are still one of the problems that plague the large-scale application of wind and solar. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a combined heat and power system and method for carbon capture and high-quality air supply, which can solve various problems caused by the volatility and intermittency of renewable energy, and at the same time realize the coupling of direct air carbon capture technology and energy system.

[0004] To achieve the above-mentioned object, the present invention discloses a combined heat and power system for carbon capture and high-quality air supply, including a wind and solar power plant, a battery, a gravity energy storage device, a regional power grid, a direct air carbon capture device, a building air supply device, user demand, a cold pipeline, a steam heat pump and a condenser;

[0005] The wind and solar power plants, batteries and gravity energy storage devices are connected to the regional power grid, and the regional power grid is connected to the power interface of the direct air carbon capture device, the power interface of the building air supply device and the power interface required by users;

[0006] The outlet of the hot pipeline is connected to the heat release side inlet of the steam heat pump, the heat release side outlet of the steam heat pump is connected to the cold pipeline, the heat absorption side outlet of the steam heat pump is connected to the steam inlet of the direct air carbon capture device, and the carbon dioxide and steam outlet of the direct air carbon capture device are connected to the heat release side inlet of the condenser.

[0007] The further improvement of the combined heat and power system with carbon capture and high-quality air supply of the present invention is:

[0008] Furthermore, the net air outlet of the direct air carbon capture device is connected to the inlet of the building air supply device, and the outlet of the building air supply device is connected to the inlet of the user demand.

[0009] Furthermore, it also includes a concentrating collector and a geothermal energy extraction device, the cold pipeline is connected to the inlet of the concentrating collector and the inlet of the geothermal energy extraction device, and the outlet of the concentrating collector and the outlet of the geothermal energy extraction device are connected to the inlet of the hot pipeline.

[0010] Furthermore, it also includes a carbon dioxide storage tank, the carbon dioxide outlet on the heat release side of the condenser is connected to the carbon dioxide storage tank, and the condensed water outlet on the heat release side of the condenser is connected to the heat absorption side inlet of the steam heat pump.

[0011] Furthermore, the outlet of the hot pipeline is connected to the cold pipeline via the heat release side required by the user.

[0012] Furthermore, it also includes a heat storage device, which is connected to the cold pipeline and the hot pipeline.

[0013] Furthermore, the heat absorption side of the condenser is connected to the outlet of the cold pipe and the inlet of the hot pipe.

[0014] Furthermore, the internal passage of the direct air carbon capture device adopts a curved surface structure.

[0015] Furthermore, it also includes an adsorbent film, which is evenly coated on both sides of the channel.

[0016] The present invention discloses a combined heat and power method for carbon capture and high-quality air supply, comprising:

[0017] The adsorption process is as follows: the direct air carbon capture device inhales air and adsorbs the carbon dioxide in the air inside the direct air carbon capture device, and discharges clean air with low carbon dioxide content as fresh air for the building;

[0018] The desorption process is as follows: the superheated steam output by the steam heat pump is passed into the direct air carbon capture device, so that the carbon dioxide adsorbed in the direct air carbon capture device is released to obtain a mixed gas of carbon dioxide and water vapor. The mixed gas is passed into a condenser, and pure carbon dioxide gas and condensed water are obtained after separation in the condenser.

[0019] The present invention has the following beneficial effects:

[0020] The cogeneration system and method for carbon capture and high-quality air supply described in the present invention converts wind energy and solar energy into electrical energy during specific operation, and uses batteries and gravity energy storage to realize electrical energy storage, thereby compensating for the intermittent and fluctuating defects of wind and solar power generation, and uses concentrating collectors and geothermal energy extraction technology to provide heat for users, and the excess heat is supplied to the steam heat pump to produce steam, which is used to supply heat and purge medium for the desorption process of the direct air carbon capture device. The carbon dioxide in the desorption process is separated and stored in a gas storage tank for use as a chemical raw material. The direct air carbon capture device obtains low-carbon air after adsorption, which is used as indoor fresh air to improve indoor comfort. A heat storage device is added during heat transmission to ensure continuous and stable heating. The present invention has the characteristics of carbon capture and improving indoor comfort while realizing energy supply, has significant social and economic value, and can be used for the construction of regional energy supply scene energy systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 is a flow chart of the method of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the internal channel of the direct air carbon capture device 6.

[0024] Among them, 1 is a wind and solar power plant, 2 is a battery, 3 is a gravity energy storage device, 4 is a concentrating collector, 5 is a steam heat pump, 6 is a direct air carbon capture device, 7 is a carbon dioxide storage tank, 8 is a geothermal energy extraction device, 9 is a heat storage device, 10 is a building air supply device, 11 is user demand, and 12 is a condenser. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0027] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0029] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0030] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0033] Embodiment 1

[0034] refer to Figure 1 The cogeneration system for carbon capture and high-quality air supply of the present invention comprises a wind-solar power plant 1, a battery 2, a gravity energy storage device 3, a concentrating collector 4, a steam heat pump 5, a direct air carbon capture device 6, a carbon dioxide storage tank 7, a geothermal energy extraction device 8, a heat storage device 9, a building air supply device 10, a user demand 11 and a condenser 12;

[0035] The wind and solar power plant 1, the battery 2 and the gravity energy storage device 3 are connected to the regional power grid, and the regional power grid is connected to the power interface of the direct air carbon capture device 6, the power interface of the building air supply device 10 and the power interface of the user demand 11.

[0036] The outlet of the concentrating collector 4 and the outlet of the geothermal energy extraction device 8 are connected to the inlet of the heat pipeline, the outlet of the heat pipeline is connected to the inlet of the heat release side of the steam heat pump 5, the outlet of the heat release side of the steam heat pump 5 is connected to the cold pipeline, the outlet of the heat absorption side of the steam heat pump 5 is connected to the steam inlet of the direct air carbon capture device 6, the carbon dioxide and steam outlets of the direct air carbon capture device 6 are connected to the inlet of the heat release side of the condenser 12, the carbon dioxide outlet on the heat release side of the condenser 12 is connected to the carbon dioxide storage tank 7, the condensed water outlet on the heat release side of the condenser 12 is connected to the inlet of the heat absorption side of the steam heat pump 5, and the net air outlet of the direct air carbon capture device 6 is connected to the inlet of the building air supply device 10.

[0037] The outlet of the building air supply device 10 is connected to the inlet of the user demand 11, the outlet of the heat pipe is connected to the cold pipe through the heat release side of the user demand 11, and the cold pipe is connected to the inlet of the concentrating collector 4 and the inlet of the geothermal energy extraction device 8.

[0038] The heat storage device 9 is connected to the cold pipeline and the hot pipeline, and the heat absorption side of the condenser 12 is connected to the outlet of the cold pipeline and the inlet of the hot pipeline.

[0039] In the present invention, the wind-solar power plant 1 is used to convert solar energy into electrical energy and connect to the regional power grid; convert wind energy into electrical energy and connect to the regional power grid.

[0040] In the present invention, the storage battery 2 is used to convert the extra wind and solar power generation into chemical energy and store it, and is connected to the regional power grid.

[0041] In the present invention, the gravity energy storage device 3 is used to convert the additional wind and solar power generation into potential energy, and is connected to the regional power grid.

[0042] In the present invention, the concentrating collector 4 is used to convert solar energy into thermal energy to provide heat for user demand 11 and steam heat pump 5.

[0043] In the present invention, the geothermal energy extraction device 8 is used to extract geothermal energy to supply user demand 11 and the steam heat pump 5.

[0044] In the present invention, the steam heat pump 5 is used to generate superheated steam to provide heat and purge medium for the direct air carbon capture device 6 .

[0045] In the present invention, the heat storage device 9 is used to store the heat from the concentrating collector 4 and geothermal energy to provide a stable heat input for the user and the steam heat pump 5 .

[0046] In the present invention, the direct air carbon capture device 6 is used to capture carbon dioxide in the air and store it in a storage tank, while generating air with a lower carbon dioxide content to be delivered into the building as fresh air.

[0047] In the present invention, the carbon dioxide storage tank 7 is used to store carbon dioxide to provide raw materials for further carbon treatment process.

[0048] In the present invention, the building air supply device 10 is used to receive fresh air from the direct air carbon capture device 6 and supply it to the building.

[0049] In the present invention, reference Figure 2 The internal channel of the direct air carbon capture device 6 adopts a minimal curved surface structure, and the adsorbent film is evenly coated on both sides of the curved surface channel, and the adsorption and desorption processes alternately occur in the channel.

[0050] The working process of the present invention is:

[0051] The hot working medium outputted from the hot pipeline enters the heat releasing side of the steam heat pump 5 to release heat, and then returns to the cold pipeline. The condensed water outputted from the condenser 12 enters the heat absorbing side of the steam heat pump 5 to absorb heat and become superheated steam, and then enters the direct air carbon capture device 6, so that the carbon dioxide adsorbed in the direct air carbon capture device 6 is released to obtain a mixed gas of carbon dioxide and water vapor, and then the mixed gas enters the condenser 12 for condensation, and the condensed water outputted from the condenser 12 enters the steam heat pump 5, and the carbon dioxide outputted from the condenser 12 enters the carbon dioxide storage tank 7;

[0052] The air enters the direct air carbon capture device 6 for carbon capture, and the clean air output by the direct air carbon capture device 6 enters the user demand 11 through the building air supply device 10.

[0053] The cold working medium in the cold pipeline enters the geothermal energy extraction device 8 and the concentrating collector 4 to be heated, and then enters the hot pipeline.

[0054] Embodiment 2

[0055] The combined heat and power generation method of carbon capture and high-quality air supply of the present invention comprises the following steps:

[0056] The adsorption process is as follows: the direct air carbon capture device 6 inhales air, and adsorbs carbon dioxide in the air in the direct air carbon capture device 6, and discharges clean air with low carbon dioxide content as fresh air for the building;

[0057] The desorption process is as follows: the superheated steam output by the steam heat pump 5 is passed into the direct air carbon capture device 6, so that the carbon dioxide adsorbed in the direct air carbon capture device 6 is released to obtain a mixed gas of carbon dioxide and water vapor, and the mixed gas is passed into the condenser 12, and after separation in the condenser 12, pure carbon dioxide gas and condensed water are obtained, the carbon dioxide is stored in the carbon dioxide storage tank 7, and the condensed water is returned to the steam heat pump 5 for recycling.

[0058] It should be noted that the present invention couples the energy storage system with carbon dioxide adsorption, utilizes wind and solar renewable energy as energy sources, introduces the power storage and heat storage device 9 for smooth energy output, and combines direct air carbon capture technology to capture carbon dioxide in the air, and exports low-carbon air as fresh air to users. It is an energy supply solution that integrates carbon emission reduction and comfort improvement, and is of great significance to achieving carbon emission reduction.

[0059] Embodiment 3

[0060] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the cogeneration method of carbon capture and high-quality air supply are implemented. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus. The internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0061] Embodiment 4

[0062] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the cogeneration method of carbon capture and high-quality air supply are implemented. Specifically, the computer-readable storage medium includes, but is not limited to, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0063] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0064] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0065] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0066] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0067] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0068] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0069] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A combined heat and power system with carbon capture and high-quality air supply, characterized in that: It includes a wind and solar power plant (1), a storage battery (2), a gravity energy storage device (3), a regional power grid, a direct air carbon capture device (6), a building air supply device (10), user demand (11), a cold pipeline, a steam heat pump (5) and a condenser (12); The wind and solar power plant (1), the storage battery (2) and the gravity energy storage device (3) are connected to the regional power grid, and the regional power grid is connected to the power interface of the direct air carbon capture device (6), the power interface of the building air supply device (10) and the power interface of the user demand (11); The outlet of the heat pipeline is connected to the heat release side inlet of the steam heat pump (5), the heat release side outlet of the steam heat pump (5) is connected to the cold pipeline, the heat absorption side outlet of the steam heat pump (5) is connected to the steam inlet of the direct air carbon capture device (6), and the carbon dioxide and steam outlet of the direct air carbon capture device (6) are connected to the heat release side inlet of the condenser (12).

2. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: The net air outlet of the direct air carbon capture device (6) is connected to the inlet of the building air supply device (10), and the outlet of the building air supply device (10) is connected to the inlet of the user demand (11).

3. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: It also includes a concentrating collector (4) and a geothermal energy extraction device (8), wherein the cold pipeline is connected to the inlet of the concentrating collector (4) and the inlet of the geothermal energy extraction device (8), and the outlet of the concentrating collector (4) and the outlet of the geothermal energy extraction device (8) are connected to the inlet of the hot pipeline.

4. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: It also includes a carbon dioxide storage tank (7), the carbon dioxide outlet on the heat release side of the condenser (12) is connected to the carbon dioxide storage tank (7), and the condensed water outlet on the heat release side of the condenser (12) is connected to the heat absorption side inlet of the steam heat pump (5).

5. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: The outlet of the hot pipeline is connected to the cold pipeline via the heat release side of the user demand (11).

6. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: It also includes a heat storage device (9), which is connected to the cold pipeline and the hot pipeline.

7. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: The heat absorption side of the condenser (12) is connected to the outlet of the cold pipeline and the inlet of the hot pipeline.

8. The combined heat and power system for carbon capture and high-quality air supply according to claim 1, characterized in that: The internal passage of the direct air carbon capture device (6) adopts a curved surface structure.

9. The combined heat and power system for carbon capture and high-quality air supply according to claim 8, characterized in that: It also includes an adsorbent film, which is evenly coated on both sides of the channel.

10. A method for combined heat and power generation with carbon capture and high-quality air supply, characterized in that: include: The adsorption process is as follows: the direct air carbon capture device (6) inhales air, and adsorbs carbon dioxide in the air in the direct air carbon capture device (6), and discharges clean air with low carbon dioxide content as fresh air for the building; The desorption process is as follows: the superheated steam output by the steam heat pump (5) is passed into the direct air carbon capture device (6), so that the carbon dioxide adsorbed in the direct air carbon capture device (6) is released to obtain a mixed gas of carbon dioxide and water vapor, and the mixed gas is passed into a condenser (12), and pure carbon dioxide gas and condensed water are obtained after separation in the condenser (12).

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