System for reducing carbon capture cost and method for reducing carbon capture cost

Abstract

The invention provides a system for reducing carbon capture cost and a method for reducing the carbon capture cost, and relates to the technical field of carbon capture. The system for reducing the carbon capture cost comprises an energy system, an electrolysis system, a combustion system and a carbon capture system which are connected in sequence, firstly, energy is provided for the electrolysis system through the energy system, then the electrolysis system generates oxygen through an electrolysis reaction, and the oxygen is conveyed to the combustion system so as to improve the oxygen concentration in the combustion system; then the combustion system generates flue gas containing high-concentration carbon dioxide through oxygen combustion, the flue gas is provided for the carbon capture system, and finally the carbon capture system carries out carbon capture on the carbon dioxide in the flue gas. Therefore, by improving the concentration of oxygen in the combustion system, the concentration of carbon dioxide in the flue gas generated by the combustion system is further improved, and conditions are provided for reducing the carbon capture cost and improving the carbon capture efficiency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of carbon capture, and in particular to a system for reducing the cost of carbon capture and a method for reducing the cost of carbon capture. Background Art

[0002] As a typical greenhouse gas, carbon dioxide will directly lead to the greenhouse effect. With the increasing global climate change in recent years, carbon dioxide capture has become a hot issue, especially the flue gas emissions of coal-fired power plants are the most important area for large-scale carbon dioxide emission reduction, and the concentration of carbon dioxide in coal-fired flue gas has an important impact on the cost of carbon capture. However, the current concentration of carbon dioxide in coal-fired flue gas is relatively low, resulting in a high cost of carbon capture after combustion. How to provide a carbon capture method to reduce the cost of carbon capture is an urgent problem to be solved. Summary of the invention

[0003] The present disclosure provides a system for reducing carbon capture costs and a method for reducing carbon capture costs.

[0004] According to a first aspect of the present disclosure, a system for reducing carbon capture costs is provided, characterized in that the system comprises: an energy system, an electrolysis system, a combustion system and a carbon capture system connected in sequence;

[0005] Wherein, the energy system is used to provide energy to the electrolysis system;

[0006] The electrolysis system is used to generate oxygen by electrolysis and provide the oxygen to the combustion system;

[0007] The combustion system is used to generate flue gas by combustion of the oxygen and provide the flue gas to the carbon capture system;

[0008] The carbon capture system is used to capture carbon from the flue gas.

[0009] According to a second aspect of the present disclosure, a method for reducing carbon capture costs is provided, characterized in that the method is applicable to the system for reducing carbon capture costs according to the embodiment of the first aspect of the present disclosure, comprising:

[0010] determining an electrolyte for an electrolysis system, a fuel for a boiler in a combustion system, and a target oxygen concentration range in the boiler;

[0011] Using the electrolysis system to electrolyze the electrolyte to generate oxygen, and transporting the oxygen to the boiler;

[0012] controlling the oxygen concentration in the boiler according to a relationship between the current oxygen concentration in the boiler and the target oxygen concentration range;

[0013] When the controlled oxygen concentration is within the target oxygen concentration range, using the oxygen in the boiler to burn with the fuel to generate target flue gas;

[0014] The target flue gas is subjected to carbon capture by using a carbon capture system to obtain carbon dioxide.

[0015] According to a third aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to cause a computer to execute the method according to the above embodiment.

[0016] The present disclosure provides a system for reducing the cost of carbon capture and a method for reducing the cost of carbon capture. The system for reducing the cost of carbon capture proposed in the embodiment of the present disclosure includes an energy system, an electrolysis system, a combustion system and a carbon capture system connected in sequence. First, the energy system provides energy to the electrolysis system, and then the electrolysis system generates oxygen through an electrolysis reaction, and transports the oxygen to the combustion system to increase the oxygen concentration in the combustion system. After that, the combustion system uses oxygen to burn to generate flue gas containing a high concentration of carbon dioxide, and the flue gas is provided to the carbon capture system. Finally, the carbon capture system captures the carbon dioxide in the flue gas. Thus, by increasing the concentration of oxygen in the combustion system, and then increasing the concentration of carbon dioxide in the flue gas generated by the combustion system, conditions are provided for reducing the cost of carbon capture and improving the efficiency of carbon capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] Figure 1 A schematic diagram of the structure of a system for reducing carbon capture costs provided by an embodiment of the present disclosure;

[0019] Figure 2 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure;

[0020] Figure 3 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure;

[0021] Figure 4 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure;

[0022] Figure 5 This is a schematic diagram of a process for carbon capture using a system for reducing the cost of carbon capture proposed in an embodiment of the present disclosure.

[0023] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this disclosure are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0026] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution disclosed in this disclosure are in compliance with the relevant provisions of national laws and regulations.

[0027] The system for reducing carbon capture costs and the method for reducing carbon capture costs according to the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0028] Figure 1 A schematic diagram of the structure of a system for reducing carbon capture costs provided in an embodiment of the present disclosure.

[0029] like Figure 1 As shown, the system for reducing the cost of carbon capture includes: an energy system, an electrolysis system, a combustion system and a carbon capture system connected in sequence;

[0030] Among them, the energy system is used to provide energy to the electrolysis system;

[0031] An electrolysis system, used for generating oxygen by electrolysis and supplying oxygen to the combustion system;

[0032] a combustion system for generating flue gas by combustion with oxygen and providing the flue gas to the carbon capture system;

[0033] Carbon capture system, used to capture carbon from flue gas.

[0034] Since there may be problems with wind and solar power abandonment in current renewable energy bases, in order to reduce energy waste and improve energy utilization, and since the traditional electrolytic aluminum industry has high energy consumption, the energy system in the present disclosure can be determined as a renewable energy system in a renewable energy base, and the electrolysis system can be determined as an electrolytic aluminum system, so that power is supplied to the electrolytic aluminum system by the renewable energy system, which can not only solve the problem that renewable energy cannot be effectively absorbed and improve energy utilization, but also effectively solve the problem of high energy consumption of the electrolytic aluminum system.

[0035] It should be noted that the specific types of the energy system and the electrolysis system can be determined according to needs, and the present disclosure does not limit this.

[0036] The combustion system may be a combustion system of a coal-fired power plant.

[0037] In the present disclosure, by providing oxygen generated by the electrolysis system to the combustion system, the oxygen concentration in the combustion system can be increased, thereby providing conditions for increasing the concentration of carbon dioxide in the flue gas generated by the combustion system.

[0038] In some possible implementation forms, the electrolysis system may include an electrolysis device and an oxygen storage tank connected in sequence;

[0039] An electrolysis device, which can be used to perform an electrolysis reaction to produce oxygen;

[0040] Oxygen storage tanks can be used to store oxygen and provide oxygen to the combustion system.

[0041] It should be noted that the specific type and function of the electrolysis device can be determined according to the actual needs of the electrolysis system. For example, when the electrolysis system is an aluminum electrolysis system, the electrolysis device can be an aluminum electrolysis device for performing an aluminum electrolysis reaction, which is not limited in the present disclosure.

[0042] It should be noted that the electrolysis system may also include other storage devices for storing other products produced in the electrolysis reaction. For example, when the electrolysis system is an aluminum electrolysis system, it may also include an aluminum storage tank for storing metallic aluminum produced in the aluminum electrolysis reaction, which is not limited in the present disclosure.

[0043] In some possible implementation forms, the combustion system may include a gas distribution device, a boiler, and a purification device connected in sequence;

[0044] Among them, the gas distribution device can be used to receive oxygen provided by the electrolysis system and provide oxygen to the boiler;

[0045] Boilers, which can be used to produce flue gas based on oxygen combustion;

[0046] The purification device can be used to purify the flue gas and provide the purified flue gas to the carbon capture system.

[0047] It should be noted that the specific structure of the gas distribution device can be determined according to actual needs, and the present disclosure does not limit this.

[0048] It should be noted that the specific type and structure of the boiler can be determined according to actual needs. For example, the boiler type in the combustion system can be a coal-fired boiler type, or an oil-fired boiler type, or a gas-fired boiler type, etc., and the present disclosure does not limit this.

[0049] It should be noted that the specific function and structure of the purification device can be determined according to actual needs. For example, the purification device can include a dust removal device and an FGD desulfurization device, etc., which are used to perform dust removal, desulfurization and other purification treatments on the flue gas, and the present disclosure does not limit this.

[0050] Among them, FGD is the abbreviation of flue gas desulfurization (FGD).

[0051] In the present disclosure, the oxygen generated by the electrolysis system is transported to the gas distribution device, and then transported to the boiler by the gas distribution device, thereby increasing the oxygen concentration in the boiler, thereby increasing the carbon dioxide concentration in the flue gas generated by the boiler, and then purifying the flue gas through a purification device, thereby reducing the carbon capture cost and improving the carbon capture efficiency.

[0052] The system for reducing the cost of carbon capture proposed in the embodiment of the present disclosure includes an energy system, an electrolysis system, a combustion system and a carbon capture system connected in sequence. First, the energy system provides energy to the electrolysis system, and then the electrolysis system generates oxygen through an electrolysis reaction, and transmits the oxygen to the combustion system to increase the oxygen concentration in the combustion system. After that, the combustion system uses oxygen to burn to generate flue gas containing a high concentration of carbon dioxide, and the flue gas is provided to the carbon capture system. Finally, the carbon capture system captures the carbon dioxide in the flue gas. Therefore, by increasing the concentration of oxygen in the combustion system, and then increasing the concentration of carbon dioxide in the flue gas generated by the combustion system, conditions are provided for reducing the cost of carbon capture and improving the efficiency of carbon capture.

[0053] Figure 2 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure.

[0054] like Figure 2 As shown, the method includes:

[0055] Step 201, determining the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler.

[0056] Among them, the target oxygen concentration range can be an oxygen concentration range that causes the boiler to produce flue gas containing high concentrations of carbon dioxide and can ensure the combustion efficiency of the boiler. It can be determined according to actual needs, or it can be pre-set, and the present disclosure does not limit this.

[0057] In the present disclosure, when performing carbon capture using the system for reducing the cost of carbon capture proposed in the embodiments of the present disclosure, the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler can be first determined, thereby providing a basis for performing carbon capture using the system for reducing the cost of carbon capture, thereby reducing the cost of carbon capture.

[0058] Step 202: Electrolyze the electrolyte using an electrolysis system to generate oxygen, and transport the oxygen to the boiler.

[0059] In the present disclosure, after determining the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler, the electrolysis system can be used to electrolyze the electrolyte to produce oxygen, and the oxygen can be transported to the boiler, thereby increasing the oxygen concentration in the boiler and providing conditions for the boiler to burn and produce flue gas containing a high concentration of carbon dioxide.

[0060] It should be noted that before using the electrolysis system to electrolyze the electrolyte, the energy system can first be used to provide energy to the electrolysis system, thereby effectively solving the problem of high power consumption of the electrolysis system and improving energy utilization and system economy.

[0061] It should be noted that when the electrolysis system is used to electrolyze the electrolyte to produce oxygen, the aluminum electrolysis reaction in the aluminum electrolysis system is taken as an example. The electrolyte can be a salt compound and aluminum oxide. Before the aluminum electrolysis reaction, the salt compound and aluminum oxide can be first heated to a molten state, and then the aluminum oxide can be reduced to metallic aluminum at the cathode. An inert anode is used at the anode to produce oxygen, which is beneficial to the separation of the electrolysis products. The present disclosure does not limit this.

[0062] Step 203, controlling the oxygen concentration in the boiler according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range.

[0063] In the present disclosure, after oxygen is delivered to the boiler, in order to increase the carbon dioxide concentration in the flue gas generated by boiler combustion and thereby reduce the carbon capture cost, the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range can be first determined, and based on the relationship, the oxygen concentration in the boiler can be controlled.

[0064] In some possible implementation forms, when the current oxygen concentration in the boiler is outside the target oxygen concentration range, the oxygen concentration in the boiler can be adjusted to be within the target oxygen concentration range. For example, when the current oxygen concentration in the boiler is less than or equal to the minimum value in the target oxygen concentration range, the current oxygen concentration in the boiler can be increased by a preset method (such as increasing the oxygen intake, etc.) to be within the target oxygen concentration range. When the current oxygen concentration in the boiler is greater than the maximum value in the target oxygen concentration range, the current oxygen concentration in the boiler can be reduced to be within the target oxygen concentration range. The present disclosure does not limit this.

[0065] In some possible implementation forms, when the current oxygen concentration in the boiler is within the target oxygen concentration range, the oxygen concentration in the boiler may be maintained within the target oxygen concentration range.

[0066] Step 204 , when the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas.

[0067] The target flue gas may be flue gas containing high concentration of carbon dioxide.

[0068] In the present disclosure, after the oxygen concentration in the boiler is controlled based on the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range, when the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas, thereby providing conditions for reducing the carbon capture cost.

[0069] Step 205: Use a carbon capture system to capture carbon from the target flue gas to obtain carbon dioxide.

[0070] In the present disclosure, after the target flue gas is generated, the carbon capture system can be used to capture carbon from the target flue gas to obtain carbon dioxide, thereby reducing the carbon capture cost and improving the carbon capture efficiency.

[0071] It should be noted that after the carbon capture system captures the target flue gas, the obtained carbon dioxide can be processed as needed. For example, the captured carbon dioxide can be used for chemical raw materials, refrigeration and fire fighting, as well as oil fields and coal bed gasification, etc., which is not limited in this disclosure.

[0072] In the disclosed embodiment, the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler are first determined, and then the electrolyte is electrolyzed by the electrolysis system to generate oxygen, and the oxygen is transported to the boiler. Then, according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range, the oxygen concentration in the boiler is controlled. When the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas, and finally the target flue gas is carbon captured by the carbon capture system to obtain carbon dioxide. Thus, oxygen is generated by electrolysis reaction using the electrolysis system, and the generated oxygen is provided to the boiler to increase the oxygen concentration in the boiler, so that the boiler uses oxygen and fuel to burn to generate flue gas containing high concentration of carbon dioxide, and the carbon dioxide in the flue gas is carbon captured by the carbon capture system, thereby reducing the cost of post-combustion carbon capture and improving the carbon capture efficiency.

[0073] Figure 3 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure.

[0074] like Figure 3 As shown, the method includes:

[0075] Step 301, determining the electrolysis type corresponding to the electrolysis system, the boiler type corresponding to the boiler in the combustion system, and the carbon dioxide concentration requirement in the flue gas generated by the boiler.

[0076] The electrolysis type can be determined according to actual needs. For example, the electrolysis type of the electrolysis system can be an electrolytic aluminum type, which is not limited in the present disclosure.

[0077] The boiler type may be determined according to actual needs or may be preset. For example, the boiler type may be a coal-fired boiler type, etc., which is not limited in the present disclosure.

[0078] The carbon dioxide concentration requirement may be a minimum concentration requirement corresponding to the carbon dioxide concentration in the flue gas when reducing the cost of carbon capture, which may be preset or determined according to actual needs, and the present disclosure does not limit this.

[0079] In the present disclosure, when carbon capture is performed using a system that reduces the cost of carbon capture, the electrolysis type corresponding to the electrolysis system in the system, the boiler type corresponding to the boiler in the combustion system, and the carbon dioxide concentration requirement in the flue gas generated by the boiler can be first determined, thereby providing a basis for carbon capture.

[0080] Step 302: Determine the electrolyte corresponding to the electrolysis system based on the electrolysis type.

[0081] In the present disclosure, after determining the electrolysis type corresponding to the electrolysis system, the electrolyte corresponding to the electrolysis system can be determined based on the electrolysis type. For example, when the electrolysis type corresponding to the electrolysis system is an electrolytic aluminum type, the electrolyte corresponding to the electrolysis system may include aluminum oxide, cryolite, and other salt additives (such as aluminum fluoride, calcium fluoride, magnesium fluoride), etc., and the present disclosure does not limit this.

[0082] Step 303: Determine the fuel and fuel type corresponding to the boiler based on the boiler type.

[0083] In the present disclosure, after determining the type of boiler in the combustion system, the fuel and fuel type corresponding to the boiler can be determined based on the boiler type. For example, when the boiler in the combustion system is a coal-fired boiler type, the corresponding fuel can be bituminous coal, etc., and the fuel type can be a bituminous coal type. When the boiler is an oil-fired boiler type, the corresponding fuel can be crude oil or heavy oil, etc., and the fuel type can be a petroleum type. When the boiler is a gas boiler type, the corresponding fuel can be methane, etc., and the fuel type can be a natural gas type, etc., and the present disclosure does not limit this.

[0084] Step 304 , determining a target oxygen concentration range in the boiler based on the boiler type, fuel type, and carbon dioxide concentration requirement.

[0085] In the present disclosure, after determining the boiler type, the boiler fuel type and the carbon dioxide concentration requirement in the combustion system, the target oxygen concentration range in the boiler can be determined based on the boiler type, the fuel type and the carbon dioxide concentration requirement, thereby providing a basis for reducing the carbon capture cost.

[0086] It should be noted that when determining the target oxygen concentration range in the boiler based on the boiler type, fuel type and carbon dioxide concentration requirements, although too high an oxygen concentration can lead to more complete combustion, too high an oxygen concentration may also increase the generation of nitrogen oxides and reduce the carbon dioxide concentration in the flue gas. Although too low an oxygen concentration may reduce the generation of nitrogen oxides, it may also lead to incomplete combustion, producing more unburned carbon and other pollutants, which is not conducive to obtaining flue gas containing high concentrations of carbon dioxide. Therefore, the specific target oxygen concentration range can be determined based on the actual combustion conditions, and the present disclosure does not limit this.

[0087] Step 305: Electrolyze the electrolyte using an electrolysis system to generate oxygen, and transport the oxygen to the boiler.

[0088] Step 306, controlling the oxygen concentration in the boiler according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range.

[0089] Step 307: When the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas.

[0090] Step 308: Use a carbon capture system to capture carbon from the target flue gas to obtain carbon dioxide.

[0091] The specific implementation forms of steps 305 to 308 may refer to the detailed descriptions in other embodiments of the present disclosure and will not be described in detail here.

[0092] In the embodiment of the present disclosure, the electrolysis type corresponding to the electrolysis system, the boiler type corresponding to the boiler in the combustion system, and the carbon dioxide concentration requirement in the flue gas generated by the boiler are first determined; then, based on the electrolysis type, the electrolyte corresponding to the electrolysis system is determined; and based on the boiler type, the fuel corresponding to the boiler and the fuel type are determined; based on the boiler type, the fuel type, and the carbon dioxide concentration requirement, the target oxygen concentration range in the boiler is determined; then, the electrolyte is electrolyzed by the electrolysis system to generate oxygen, the oxygen is transported to the boiler, and the oxygen concentration in the boiler is controlled according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range; when the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas; finally, the carbon capture system is used to capture carbon from the target flue gas to obtain carbon dioxide. Therefore, by determining the oxygen concentration range in the boiler based on the boiler type, fuel type and carbon dioxide concentration requirements in the flue gas generated by the boiler, the oxygen generated by the electrolysis system is transported to the boiler, and when the oxygen concentration in the boiler is within the oxygen concentration range, oxygen and fuel are burned to obtain target flue gas, and the carbon capture system is used to capture carbon from the target flue gas to obtain carbon dioxide, thereby improving the reliability of reducing the cost of carbon capture and improving the carbon capture efficiency.

[0093] Figure 4 A schematic flow chart of a method for reducing carbon capture costs provided in an embodiment of the present disclosure.

[0094] like Figure 4 As shown, the method includes:

[0095] Step 401, determining the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler.

[0096] Step 402: Electrolyze the electrolyte using an electrolysis system to generate oxygen, and transport the oxygen to the boiler.

[0097] Step 403, controlling the oxygen concentration in the boiler according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range.

[0098] Step 404: When the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas.

[0099] The specific implementation forms of steps 401 to 404 can refer to the detailed descriptions in other embodiments of the present disclosure, and will not be described in detail here.

[0100] Step 405: purify the target flue gas to obtain purified flue gas.

[0101] It should be noted that when the flue gas is purified, specific purification measures can be determined according to actual needs. For example, the flue gas can be first subjected to dust removal, and then the dust-removed flue gas can be subjected to desulfurization, etc., which is not limited in the present disclosure.

[0102] In the present disclosure, after the oxygen in the boiler is burned with the fuel to generate the target flue gas, in order to improve the carbon capture efficiency and reduce the carbon capture cost, the target flue gas can be first purified to reduce the impurities in the target flue gas and obtain the purified flue gas.

[0103] Step 406: Use a carbon capture system to capture carbon from the purified flue gas to obtain carbon dioxide.

[0104] In the present disclosure, after purifying the target flue gas to obtain the purified flue gas, a carbon capture system can be used to capture carbon from the purified flue gas to obtain carbon dioxide, thereby effectively reducing the carbon capture cost and improving the carbon capture efficiency.

[0105] In the disclosed embodiment, the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler are first determined, and then the electrolyte is electrolyzed by the electrolysis system to generate oxygen, and the oxygen is transported to the boiler, and the oxygen concentration in the boiler is controlled according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range. When the controlled oxygen concentration is within the target oxygen concentration range, the oxygen in the boiler is burned with the fuel to generate the target flue gas, and then the target flue gas is purified to obtain the purified flue gas, and finally the purified flue gas is carbon captured by the carbon capture system to obtain carbon dioxide. Thus, the oxygen generated by electrolysis is transported to the boiler to increase the oxygen concentration in the boiler, and then the boiler uses oxygen and fuel to burn to obtain flue gas containing high concentration of carbon dioxide, and the flue gas is purified, and the purified flue gas is carbon captured by the carbon capture system, thereby improving the carbon capture efficiency and reducing the carbon capture cost.

[0106] Combine the following Figure 5, an example is given of a process of carbon capture by using the system for reducing the cost of carbon capture disclosed in the present invention, Figure 5 This is a schematic diagram of a process for carbon capture using a system for reducing the cost of carbon capture proposed in an embodiment of the present disclosure.

[0107] Figure 5 In the figure, the energy system is illustrated by a renewable energy system, the electrolysis system is illustrated by an electrolytic aluminum system, and the purification device is illustrated by a dust removal device and a desulfurization device.

[0108] like Figure 5 As shown, first, the renewable energy system provides energy to the electrolytic aluminum system, and then the electrolytic aluminum system generates oxygen by electrolyzing aluminum oxide, and the oxygen is transported to the gas distribution device of the combustion system, and then the oxygen is transported to the boiler through the gas distribution device, and the oxygen is burned with the fuel to obtain the target flue gas containing a high concentration of carbon dioxide, and then the target flue gas is transported to the purification device, and is successively subjected to dust removal, desulfurization and purification by the dust removal device and the desulfurization device, and the carbon capture system is used to capture carbon dioxide from the purified flue gas, thereby reducing the carbon capture cost.

[0109] Furthermore, when alumina is electrolyzed using an electrolytic aluminum system, metallic aluminum can also be obtained. At this time, the metallic aluminum can be supplied to downstream for use according to actual needs. For example, it can be used in the construction field to make building materials such as doors and windows, and it can also be used in the transportation industry such as as a material for manufacturing vehicles, etc., or it can also be used in the electronic and electrical fields, the packaging industry, etc., and the present disclosure does not limit this.

[0110] Furthermore, after carbon capture of flue gas, the obtained carbon dioxide can also be supplied to downstream for use according to actual needs, for example, it can be used as a chemical raw material, as a food preservative and for making beverages, or as a fertilizer, for refrigeration and fire fighting, etc. The present disclosure does not limit this, thereby improving the overall economic efficiency of the system that reduces the cost of carbon capture.

[0111] In order to implement the above embodiments, the present disclosure further proposes a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the system for reducing carbon capture costs as proposed in the above embodiments of the present disclosure.

[0112] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0113] It should be understood that the present disclosure is not limited to the exact structures that have 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 disclosure is limited only by the appended claims.

[0114] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0115] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0116] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0117] In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0118] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A system for reducing the cost of carbon capture, characterized in that: The system comprises: an energy system, an electrolysis system, a combustion system and a carbon capture system connected in sequence; Wherein, the energy system is used to provide energy to the electrolysis system; The electrolysis system is used to generate oxygen by electrolysis and provide the oxygen to the combustion system; The combustion system is used to generate flue gas by combustion of the oxygen and provide the flue gas to the carbon capture system; The carbon capture system is used to capture carbon from the flue gas.

2. The system according to claim 1, characterized in that The electrolysis system comprises an electrolysis device and an oxygen storage tank connected in sequence; Wherein, the electrolysis device is used to perform an electrolysis reaction to produce oxygen; The oxygen storage tank is used to store the oxygen and provide the oxygen to the combustion system.

3. The system according to claim 1, characterized in that The combustion system comprises a gas distribution device, a boiler and a purification device connected in sequence; Wherein, the gas distribution device is used to receive oxygen provided by the electrolysis system and provide the oxygen to the boiler; The boiler is used to generate flue gas based on the combustion of oxygen; The purification device is used to purify the flue gas and provide the purified flue gas to the carbon capture system.

4. A method for reducing the cost of carbon capture, characterized in that: The method is applicable to the system for reducing carbon capture costs as claimed in any one of claims 1 to 3, comprising: determining an electrolyte for an electrolysis system, a fuel for a boiler in a combustion system, and a target oxygen concentration range in said boiler; Using the electrolysis system to electrolyze the electrolyte to generate oxygen, and transporting the oxygen to the boiler; controlling the oxygen concentration in the boiler according to a relationship between the current oxygen concentration in the boiler and the target oxygen concentration range; When the controlled oxygen concentration is within the target oxygen concentration range, using the oxygen in the boiler to burn with the fuel to generate target flue gas; The target flue gas is subjected to carbon capture by using a carbon capture system to obtain carbon dioxide.

5. The method according to claim 4, characterized in that The step of determining the electrolyte of the electrolysis system, the fuel of the boiler in the combustion system, and the target oxygen concentration range in the boiler comprises: Determine the electrolysis type corresponding to the electrolysis system, the boiler type corresponding to the boiler in the combustion system, and the carbon dioxide concentration requirement in the flue gas generated by the boiler; Based on the electrolysis type, determining an electrolyte corresponding to the electrolysis system; Based on the boiler type, determining the fuel and fuel type corresponding to the boiler; A target oxygen concentration range in the boiler is determined based on the boiler type, the fuel type, and the carbon dioxide concentration requirement.

6. The method according to claim 4, characterized in that The controlling of the oxygen concentration in the boiler according to the relationship between the current oxygen concentration in the boiler and the target oxygen concentration range includes any one of the following: When the current oxygen concentration in the boiler is outside the target oxygen concentration range, adjusting the oxygen concentration in the boiler to be within the target oxygen concentration range; When the current oxygen concentration in the boiler is within the target oxygen concentration range, the oxygen concentration in the boiler is maintained within the target oxygen concentration range.

7. The method according to claim 4, characterized in that The method of capturing carbon from the target flue gas using a carbon capture system to obtain the carbon dioxide comprises: Purifying the target flue gas to obtain purified flue gas; The purified flue gas is subjected to carbon capture by using a carbon capture system to obtain carbon dioxide.

8. A non-transitory computer-readable storage medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 4-6.

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