Distributed carbon management integrated system capable of realizing carbon capture, carbon utilization and carbon sequestration in single system

Abstract

The invention discloses a distributed carbon management integrated system capable of automatically realizing carbon capture, carbon utilization and carbon sequestration in a single system. The distributed carbon management integrated system comprises a direct air capture unit, an electrochemical regeneration unit, a carbon dioxide release and pressurization unit, a water mineral separation and carbon sequestration unit, a circulating liquid transmission system and a control module. Carbon dioxide in the air is firstly adsorbed by the copper-chelated alkalescent resin, and the resin after adsorption saturation is regenerated through alkali liquor generated through electrochemistry and forms a sodium bicarbonate solution. The sodium bicarbonate solution enters a closed container filled with weakly acidic resin to be subjected to acidification reaction, carbon dioxide gas is generated through self-pressurization and conveyed to the water mineral separation and carbon sequestration unit under pressure driving, and calcium carbonate precipitates generated in the water are subjected to solid-state sequestration. According to the invention, integration of carbon capture, regeneration, conversion and sequestration and low-energy-consumption operation are realized, and the system is suitable for distributed carbon management application scenarios.

Description

Technical Field

[0001] This invention relates to a distributed carbon management integrated system that can realize carbon capture, carbon utilization and carbon sequestration in a single system. Background Technology

[0002] With the increasing prominence of global climate change, the large-scale emission of greenhouse gases such as carbon dioxide has become one of the most pressing environmental problems to be addressed. Currently, carbon capture, utilization, and storage (CCUS) technologies are mainly used to reduce carbon dioxide emissions. These technologies capture carbon dioxide from industrial emission sources or the atmosphere and then convert, utilize, or store it long-term to reduce the total amount entering the atmosphere. However, most existing carbon management technologies rely on centralized systems, which are complex, energy-intensive, and have high operation and maintenance costs, making them unsuitable for distributed or small-scale applications.

[0003] In the carbon capture stage, direct air capture technology has attracted attention because it can directly remove low concentrations of carbon dioxide from ambient air. However, existing technologies generally suffer from limited adsorption capacity, reliance on high temperatures or strong alkaline solutions for regeneration, and high energy consumption, making it difficult to achieve long-term stable operation. Furthermore, the bicarbonate solution generated during adsorbent regeneration is often lost as a byproduct and not effectively utilized within the system, resulting in low overall carbon conversion efficiency.

[0004] In the field of carbon utilization and sequestration, technologies that utilize the reaction of carbon dioxide with metal ions in water to generate stable mineral products are gaining increasing attention. Among these, the reaction of carbon dioxide with calcium ions in water to form calcium carbonate precipitate allows for solid-state carbon dioxide sequestration while simultaneously separating and regulating the mineral composition of the water. However, existing technologies typically require external compression equipment to provide high-pressure carbon dioxide, resulting in low system integration, high energy consumption, and the independent processes of carbon capture, carbon dioxide pressurization, and water mineral separation, making it difficult to form a continuous and coordinated integrated system.

[0005] Furthermore, existing technologies have shortcomings in the utilization of acid and alkali resources within the system. Acids and alkalis are often treated as waste liquids separately, failing to form a recycling mechanism within the system, further increasing operating costs and environmental burden. Therefore, how to achieve the synergistic integration of carbon dioxide capture, regeneration, pressurization, and conversion, as well as water mineral separation and carbon sequestration, within a single system, and to construct a low-energy-consumption, recyclable operating mode, remains a pressing technical problem to be solved in this field. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a distributed carbon management integrated system that can self-realize carbon capture, carbon utilization, and carbon sequestration within a single system, enabling all processes to be completed within a single system. A distributed, integrated technology solution that encompasses the entire process of capture, regeneration, utilization, and storage, and is capable of self-supplying acids and alkalis through an internal electrochemical process to achieve continuous cyclical operation.

[0007] This invention is achieved through the following technical solution: a distributed carbon management integrated system capable of self-realizing carbon capture, carbon utilization, and carbon sequestration within a single system, comprising: The direct air capture unit is a fixed bed filled with copper-chelated weakly basic resin, used to adsorb carbon dioxide from the air. The electrochemical regeneration unit has an anode cavity, an intermediate cavity and a cathode cavity, which are separated by anion exchange membrane and bipolar membrane, respectively. Under the action of an applied direct current, acid and alkali solutions are generated simultaneously inside the system. The carbon dioxide release and pressurization unit is a closed container filled with a weakly acidic cation exchange resin, which reacts with the sodium bicarbonate solution obtained from the regenerated resin in the electrochemical regeneration unit to generate and self-pressurize carbon dioxide gas. A water mineral separation and carbon sequestration unit, which is filled with weakly acidic resin or other exchangeable resin. Fixed-bed reactors are used to decompose water particles under pressurized carbon dioxide. Calcium carbonate precipitate is formed; The circulating liquid transfer system and control module are used to realize solution transfer, ion reflux and pressure regulation between the above-mentioned units; in, The resin saturated by the direct air capture unit is regenerated by the alkaline solution generated by the electrochemical regeneration unit to form a sodium bicarbonate solution. The sodium bicarbonate solution generates carbon dioxide gas in the carbon dioxide release and pressurization unit, and this carbon dioxide gas is introduced into the water mineral separation and carbon sequestration unit. Calcium carbonate solid is produced; The regenerated liquid formed by the weakly acidic cation exchange resin in the carbon dioxide release and pressurization unit after being regenerated by the acid solution generated by the electrochemical regeneration unit is returned to the electrochemical regeneration unit to generate acid or alkali solution again, thereby constructing a closed-loop carbon cycle within the system.

[0008] As a preferred technical solution, the copper-chelated weakly basic resin contains primary amine groups and... Forming chelate structures, through right Reversible coordination enables the determination of 400–1000 ppm in air. Adsorption.

[0009] As a preferred technical solution, the electrochemical regeneration unit includes a ruthenium-titanium coated anode, a stainless steel conductive cathode, and a three-cavity structure formed by stacking acrylic plates, with the middle cavity enriched under the action of an electric field. Alkali solution is generated and enriched in the anode chamber. An acid solution is generated.

[0010] As a preferred technical solution, the bipolar membrane includes anion exchange layers and cation exchange layers stacked on top of each other. The anion exchange layers are disposed facing the anode cavity, and the cation exchange layers are disposed facing the cathode cavity. Under the action of an electric field, water dissociation occurs in the intermediate cavity to generate... and generated in the anode cavity This is to achieve the simultaneous generation of acid and alkali solutions.

[0011] As a preferred technical solution, the reaction of the sodium bicarbonate solution with the weakly acidic resin can automatically raise the carbon dioxide pressure to 0.35–0.45 MPa in a closed container, so that the subsequent gas-liquid reaction can be driven without the need for external compression equipment.

[0012] As a preferred technical solution, the carbon dioxide release and pressurization unit is equipped with a pressure sensor and a safety valve for regulation. Output pressure and maintain safe system operation.

[0013] As a preferred technical solution, in the water mineral separation and carbon sequestration unit Captured by the resin through ion exchange and introduced under pressure. After dissolving to form carbonic acid, it forms a solid. Precipitation enables carbon sequestration.

[0014] As a preferred technical solution, the liquid phase after the reaction of the water mineral separation and carbon sequestration unit contains , The bicarbonate ions are returned to the electrochemical regeneration unit via the circulating liquid transport system to serve as an electrolyte solution to maintain the continuous generation of acid and alkali solutions in the electrochemical regeneration unit.

[0015] As a preferred technical solution, the operating voltage of the electrochemical regeneration unit is 0.5–8 V, and the electrolyte is a sodium sulfate solution of 0.01–0.1 mol / L.

[0016] As a preferred technical solution, the direct air capture unit, electrochemical regeneration unit, carbon dioxide release and pressurization unit, and water mineral separation and carbon sequestration unit are all equipped with independent liquid and gas interfaces. Each interface is connected by a detachable connecting pipeline in the circulating liquid transmission system. The connecting pipeline uses standardized connectors, and the valve group in the control module enables the switching, isolation, or series flow between the units, so that each unit can be disassembled, replaced, or added in parallel while maintaining the continuity of the liquid and gas paths.

[0017] The beneficial effects of this invention are as follows: Compared with the prior art, the distributed carbon management integrated system provided by this invention, which can realize carbon capture, carbon utilization and carbon sequestration in a single system, organically integrates functional modules such as direct air capture, electrochemical regeneration, carbon dioxide release and pressurization, and water mineral separation and carbon sequestration, so that carbon dioxide can complete the continuous closed-loop operation of capture, conversion and sequestration within the system, avoiding energy and material losses between multiple independent devices, and helping to reduce overall operating energy consumption and system complexity.

[0018] This invention utilizes an electrochemical regeneration unit to simultaneously generate acid and alkali solutions under an applied electric field. This allows the resin in the direct air capture unit, after adsorption saturation, to be regenerated within the system, reducing dependence on external high-temperature or strong-alkali regeneration conditions and improving the sustainability of the carbon dioxide capture process. Simultaneously, the sodium bicarbonate solution formed during regeneration is directly introduced into the carbon dioxide release and pressurization unit to participate in subsequent reactions, achieving efficient utilization of the captured products within the system.

[0019] In the process of carbon dioxide release and pressurization, this invention utilizes the reaction of hydrogen ions released by a weakly acidic cation exchange resin with sodium bicarbonate solution to achieve self-pressurization of carbon dioxide under closed conditions. This eliminates the need for additional external compression equipment to obtain pressurized carbon dioxide suitable for subsequent reactions, effectively reducing system energy consumption and equipment investment costs.

[0020] Furthermore, this invention directly introduces pressurized carbon dioxide into the water mineral separation and carbon sequestration unit, causing calcium ions in the water to react with carbon dioxide to generate stable calcium carbonate solid, thus achieving long-term solid-state sequestration of carbon dioxide. At the same time, it completes the separation and regulation of mineral components in the water, expanding the application scenarios of carbon dioxide resource utilization.

[0021] Furthermore, this invention utilizes a circulating liquid transport system to return the regenerated liquid from the water mineral separation and carbon sequestration unit to the electrochemical regeneration unit. This regenerated liquid serves as an electrolyte solution in the subsequent generation of acid and alkali solutions, establishing a material and energy circulation path within the system. This reduces waste liquid discharge and improves the overall system's operational stability and resource utilization efficiency. The integrated system is compact, flexible in operation, and suitable for distributed carbon management and various application scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a block diagram of the overall system structure of the present invention; Figure 2 This is a schematic diagram of the three-chamber structure of the electrochemical regeneration unit of the present invention; Figure 3 For the present invention Flowchart of self-pressurized release + water softening and mineralization; Figure 4 This is a schematic diagram illustrating the working principle of the distributed carbon management integrated system of the present invention. Detailed Implementation

[0024] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0025] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0026] This embodiment provides a distributed carbon management integrated system that can self-realize carbon capture, carbon utilization, and carbon sequestration within a single system, such as... Figures 1 to 4As shown, this system enables continuous processes such as capturing carbon dioxide from the air, electrochemical regeneration of adsorbent materials, self-pressurized release of carbon dioxide, and simultaneous softening of hardness ions and mineralization and sequestration of carbonates in water. The entire system consists of multiple functional units, which are coupled to each other through liquid channels, gas channels, and ion migration processes driven by an electric field. This allows for the formation of a self-sustaining carbon cycle pathway within the system, enabling continuous operation of carbon dioxide capture, conversion, and solidification without relying on external chemicals, compression equipment, or heat input.

[0027] The system comprises a direct air capture unit, an electrochemical regeneration unit, a carbon dioxide release and pressurization unit, a water mineral separation and carbon sequestration unit, a circulating liquid transport system, and a control module. The units are connected via detachable liquid and gas interfaces using standardized quick-connect couplings, facilitating easy replacement and addition of units during system installation, maintenance, and expansion. The control module coordinates and manages the pumps, valves, pressure sensors, electrochemical power supply, and other actuators, ensuring that liquid flow, gas transport, acid / alkali generation, and carbon dioxide release occur sequentially under predetermined conditions.

[0028] The system operation begins with the direct air capture unit. This unit, as follows... Figure 1 As shown, a fixed-bed structure filled with copper-chelated weakly basic resin is employed. The resin has a primary amine structure and reacts with... To form a stable chelation center, thus As the Lewis acid center, it can react with airborne acids. The molecules undergo a reversible coordination reaction. Air, driven by an air pump, passes through the resin bed and comes into contact with the active sites of the chelating copper resin. Selectively adsorbed and forming resin Complex structure, while the other components in the air, such as , And trace amounts of water vapor continue to be discharged from the outlet. When the resin is fresh, its... It has high adsorption capacity and fast rate, and can adsorb at low concentrations of 400–1000 ppm. Under certain conditions, efficient adsorption is maintained. As adsorption time progresses, the resin is gradually... When the resin reaches saturation, its adsorption efficiency decreases, and it needs to enter the regeneration stage.

[0029] The resin regeneration process is completed by an electrochemical regeneration unit that provides alkali solution. For example... Figure 2As shown, the electrochemical unit adopts a three-chamber structure, consisting of an anode chamber, an intermediate chamber, and a cathode chamber arranged sequentially. An anion exchange membrane is placed between the anode chamber and the intermediate chamber, and a bipolar membrane is placed between the intermediate chamber and the cathode chamber. The three chambers are formed by stacking acrylic structural plates. Each chamber has a specific volume of flow space for electrolyte flow. The anode uses a ruthenium-titanium coated electrode, and a stainless steel sheet serves as the cathode end conductive plate, allowing current to efficiently enter the electrolyte system at both ends of the device. Under an applied DC voltage of 0.5–8 V, the bipolar membrane undergoes a water dissociation reaction, generating an anion exchange membrane on its AEL side. CEL side generation This leads to the intermediate cavity solution As the concentration increases, an alkaline solution with regenerative activity forms in the intermediate cavity. Simultaneously, anolyte water electrolysis... The continuous accumulation of acidity in the anode chamber leads to an acidic solution. By controlling the flow rate and current density of each chamber, an electrochemical alkaline solution with stable alkalinity in the range of 0.01–0.1 mol / L can be generated in the intermediate chamber.

[0030] When the saturated copper chelating resin comes into contact with an electrochemically generated alkaline solution, the resin... It desorbs from the resin in the form of bicarbonate ions, forming Eluent. This process restores the resin... The activity center, enabling it to recapture ;at the same time The eluent is collected as reactant for the next step, ensuring the continuation of the internal material circulation pathway. During the continuous adsorption-regeneration cycle of the resin, the electrochemically generated alkali solution continuously replenishes the resin's regeneration needs, eliminating the need for external regeneration. Or similar alkaline reagents.

[0031] The regenerated sodium bicarbonate solution enters the carbon dioxide release and pressurization unit via a circulating liquid transfer system. This unit is as follows: Figure 3 The structure shown is a closed container filled with a weakly acidic cation exchange resin. The resin surface contains substances capable of exchanging cations. The carboxyl or sulfonic acid group. When When the solution comes into contact with the weak acid resin, the resin contains... Released, with An acidification reaction occurs to produce Gas, and cause the solution to It enters the resin, forming the sodium form of the resin. Because the reaction takes place in a closed container, the product... As gas accumulates internally, the pressure inside the container rises rapidly, stabilizing at 0.35–0.45 MPa within 20–40 minutes. Within this pressure range, the outlet valve at the top of the container can then... It delivers gas at a stable pressure to the subsequent reaction unit without the need for an external compressor or external high-pressure gas source, giving the system a natural gas-driven capability.

[0032] When pressurized When transported to the water mineral separation and carbon sequestration unit First, it forms in the solution. Subsequently Ionization occurs or , with hard water The reaction produces insoluble substances. Solid precipitation, making The concentration decreases, achieving the water softening process. Simultaneously, the generated... Solid-state deposition is a thermodynamically stable form of carbon sequestration, effectively achieving... The mineralization is fixed. As the reaction proceeds, the mineralization in the water... , The plasma is gradually transferred into the solution and then returned to the electrochemical regeneration unit by the circulating liquid transport system, so that the ions in the solution can participate again in the acid-base solution generation and resin regeneration process.

[0033] The water mineral separation and carbon sequestration unit plays a dual role in this system. Firstly, it treats hard water from external sources, removing calcium ions through a carbonate precipitation reaction. Secondly, it fixes carbon dioxide captured from the air and released in the aforementioned unit into solid calcium carbonate through a chemical reaction, thus achieving carbon sequestration. To ensure the continuity of the mineralization reaction and the stable formation of the precipitate, this unit typically employs a fixed-bed structure filled with weakly acidic resin. During the mineralization process, the resin captures some calcium ions from the solution through exchange, ensuring a stable calcium source supply for the initial reaction. Simultaneously, the microporous structure of the resin surface... Crystal nuclei provide nucleation sites, which helps in the uniform growth of precipitates. In addition, a settling space is provided at the bottom of the reactor, allowing for the settling of larger particle sizes. Crystals settle in the bottom region, which facilitates periodic solid removal and ensures the cleanliness of the upper solution, making the circulation more stable.

[0034] In hard water and pressurization During the mixing process, Dissolves in water to form Compared to ordinary Dissolution behavior under normal pressure, under pressure It has a higher solubility, therefore it can react with hard water more quickly. A reaction occurs. With... Further ionization, forming and , Immediately Combined generation Sedimentation, and It can then continue to be generated through subsequent reactions. Or they may be captured by active sites on the resin surface. This series of reactions can be completed within minutes to tens of minutes, depending on the specific reaction rate. Factors such as pressure, solution temperature, hardness ion concentration, and mass transfer resistance of the resin bed structure are considered. The effluent from the reaction system typically contains a certain amount of... Trace and unresponsive These ions are returned to the electrochemical regeneration unit through the circulating liquid transport system, where they can be used to continue generating acid and alkali solutions, thus forming a closed loop and enabling the entire system to operate continuously.

[0035] The circulating fluid transfer system plays a crucial role in this system. It typically consists of corrosion-resistant miniature pumps, peristaltic pumps, check valves, switching valves, pressure gauges, and fluid lines. All fluid line interfaces use standardized connectors, facilitating system maintenance and component upgrades. The flow rate of the circulating pumps is adjusted by the control module based on real-time monitoring data to ensure appropriate solution residence time in each unit, sufficient mass transfer, and timely transfer of regenerated solution, reaction solution, and mineralized solution to the next unit. Through appropriate valve switching, the system can achieve different operating modes, such as continuous adsorption-continuous regeneration, intermittent adsorption-continuous regeneration, or intermittent pressurization-continuous mineralization, providing flexibility for various application scenarios. The control module can preset different parameter ranges, such as resin adsorption saturation, regenerated alkali concentration, upper limit of carbon dioxide pressure, and mineralization reaction time. When the values ​​at the monitoring points reach the set thresholds, the control module automatically switches valve positions or starts / stops the relevant pumps, enabling the system to operate unattended for extended periods.

[0036] The electrochemical regeneration unit of this invention not only generates regenerated active alkali solution, but also achieves different acid-base generation ratios by adjusting voltage, current density, and flow rate. By controlling the reflux ratio of acid and alkali solutions at various points in the system, the resin regeneration process is maintained within a suitable pH range without the need for frequent electrolyte replacement or the introduction of additional chemicals. In traditional... In capture systems, the resin, solution, or absorbent typically needs to be heated to a high temperature (e.g., 80–120°C) during the regeneration phase to achieve the desired effect. Desorption is not performed using conventional methods, but this system utilizes an electrochemical process to complete the regeneration process at room temperature, thus significantly reducing energy consumption. Furthermore, the electrochemical membrane structure can be selected from commercially available AEM (such as FAA and AHA series), BPM (such as Fumasep and Neosepta series), or other composite membranes. Different system equilibrium points can be achieved based on varying conductivity, chemical stability, and water dissociation performance, making this invention flexible in material selection.

[0037] In addition to using weak acid resin as the acid release source, the carbon dioxide release and pressurization unit can also employ other methods to provide... Materials such as polyacrylic acid resin, acrylic ion exchange microspheres, and solid inorganic acid sources (such as bisulfate salts) can all undergo an acidification reaction upon contact with sodium bicarbonate solution to generate... However, weak acid resins have reversible regeneration capabilities, allowing them to continue participating in the cycle and making them more suitable for long-term operation. In this system, when the solution comes into contact with the resin, it generates... Then, the resin is from Type transformation If resin restoration is required... This type of resin can be regenerated by introducing it into an electrochemically generated acid solution, thus... Replace the resin Therefore, weak acid resins not only participate in the system It generates and participates in the internal loop, enabling the entire system to operate in a highly closed loop.

[0038] along with As pressure accumulates in a sealed container, the pressure gradually increases. To ensure safe operation, pressure sensors and safety relief valves are typically installed on the top or side wall of the container. When the internal pressure reaches a set upper limit (e.g., 0.45 MPa), the control module automatically stops the solution input or opens a switching valve to release the pressure. It is fed into the mineralization reactor to prevent further pressure increases. This function allows the system to automatically adjust without manual intervention. Release rhythm to maintain the stability of the mineralization process. In addition, the interior of the container can be structurally designed to form layered zones, with a gas space at the top and a liquid area at the bottom. The weak acid resin bag or resin bed inside is kept wetted, allowing the reaction to proceed fully while preventing resin particles from blocking the gas passage.

[0039] During continuous system operation, mass migration between multiple units is accomplished jointly by a liquid circulation pump and an electrochemical membrane structure. The anion exchange membrane in the electrochemical unit allows for the inclusion of… , as well as Anions migrate from the anode side to the intermediate cavity under the influence of an electric field, while the bipolar film generates [something] under the influence of current. and This redistributes ions and restructures the solution composition electrochemically. When using 0.01–0.1 mol / L sodium sulfate as the electrolyte, As a stable background electrolyte, it participates in the migration, helping to maintain the conductivity of the electrochemical system; simultaneously, it originates from external systems. and After entering the electrochemical unit, some carbonate ions may migrate to different chambers, causing a redistribution of carbonate ions in the system under an electric field. This ion migration mechanism enables the system to achieve ion self-equilibrium between different units, thus ensuring the continuity of acid-base generation, resin regeneration, and mineralization processes. The acid solution generated in the electrochemical regeneration unit has a certain concentration and can be introduced into the weak acid resin regeneration process when necessary, causing the resin to be coated with... The occupied site was transformed back into Type, restore its similarity solution reaction generates The ability to repeatedly recycle the resin without replacement, and the regenerated solution, sodium sulfate, can be returned to the chemical reactor for reuse.

[0040] In this invention, the copper-chelated weakly basic resin used in the direct air capture unit can be a styrene-based resin, a polyacrylic resin, or other functionalized microspheres containing primary or secondary amine structures, with varying degrees of crosslinking. Resin coordination... Afterwards, a stable amino-copper complex structure can be formed, enabling... become The active site of adsorption. With bidental coordination Competitive bonding, through the formation of complexes in the form of bicarbonate ions, makes the adsorption process highly reversible. In environments with high relative humidity, water molecules can assist... Formed on the resin surface This makes the adsorption process more efficient, while in a dry environment it mainly occurs via gas-phase coordination. The resin in the adsorption... Changes in the pH microenvironment during the process cause some amino groups to protonate, making the resin slightly acidic. As adsorption continues, more and more active sites are formed on the resin. - Complexes are used to gradually bring the adsorption capacity to its upper limit.

[0041] During the regeneration stage, the electrochemical alkaline solution generated in the intermediate chamber flows into the resin bed through the circulating liquid transport system, where it interacts with the resin. Function, make It reverts to its original coordination form, and Converted by alkaline solution The generated The solution is collected from the bottom of the resin bed and can be directly used in the carbon dioxide release unit without additional treatment. Since high-temperature operation is not required during resin regeneration, the resin does not experience thermal decay, thus achieving a long cycle life. Furthermore, temperature and humidity control structures can be incorporated into the resin bed; for example, the humidity of the inlet air can be controlled by adjusting the air supply volume to maintain a stable adsorption rate. In tropical regions with high air humidity, the moisture input can be reduced, while in cold regions with dry air, atomized water can be added appropriately to further stabilize the coordination adsorption conditions.

[0042] Another significant feature of this system is its ability to circulate resin and solution without consuming external acids and alkalis. The electrochemically generated acid not only regenerates the weakly acidic resin but can also be used to adjust the pH of other solutions in the system, ensuring that each unit operates at its optimal condition throughout the process. Because... The adsorption and mineralization processes are highly sensitive to pH, for example, during the regeneration of weakly acidic resins. Too low a concentration will lead to Incomplete release, coupled with a system pH that is too low during the mineral separation process in water, can lead to... The generation is insufficient, therefore, higher stability can be provided in this system by adjusting the pH through an electrochemical unit.

[0043] In the carbon dioxide release and pressurization unit, when After the solution enters the resin layer, due to the resin carrying... High concentration and fast reaction rate make It can release a large amount of energy in a short period of time. (Generated) As the gas pressure continuously rises due to the confined environment, a pressure sensor monitors the internal pressure in real time and feeds the data back to the control module. Once the pressure reaches the set value, the control module opens the gas path valve, causing... It flows into the mineralization unit. If the pressure is lower than the set value, for example due to insufficient reaction or a decrease in system temperature, the control module can adjust the valve to allow more... The solution enters the reaction zone to ensure The supply is stable. Furthermore, a turbulence-inducing structure can be incorporated inside the container to ensure more thorough contact between the liquid and the resin, preventing localized uneven concentrations that could lead to a decrease in the reaction rate.

[0044] In the water mineral separation and carbon sequestration unit, the rate and efficiency of the mineralization reaction are related to... Pressure, water flow velocity, resin filling height, fluid distribution inside the reactor, and The concentration and other factors are relevant. To ensure the stability of the reaction, the reactor can adopt a top-in, bottom-out flow pattern, so that... After entering the water body, it fully dissolves and comes into full contact with the water flow, forming a uniform mixture. Solution. With Decomposition and generation and , and Immediately combine to form Solids enable carbon sequestration. A gas-liquid separation structure can be installed at the top of the reactor to facilitate this process. After dissolution, any excess undissolved portion can be discharged or returned to the upstream system for recycling. In the settling zone at the bottom of the reactor, As sediment gradually accumulates, to ensure the stability of the settling zone, a removable sediment collector or drainage pipe can be installed at the bottom of the device, allowing the system to remove the sediment after prolonged operation. Discharge regularly.

[0045] As the mineralization reaction continues, with As the sediment volume gradually increases, the volume of solids in the bottom settling area also expands. To prevent the sediment from affecting the solution flow channels and the stability of the resin bed, the bottom sediment can be removed periodically by draining it. This draining operation can be done manually or automatically, such as using an electrically or pneumatically controlled bottom discharge valve that automatically opens at a preset time or when the sediment volume reaches a certain threshold, thus removing the deposited material. A portion of the discharged water is placed into storage tanks for further treatment or recycling. The solid can be dried, filtered, or stored directly as a carbon sequestration product as needed. It has high chemical stability and does not easily release the fixed carbon even after long-term storage at room temperature. This ensures the long-term reliability of the sealing process.

[0046] During the material cycle of the entire system, , as well as Plasma circulates continuously between different units. Because these ions can migrate between different chambers and participate in corresponding reactions, the system requires regulation by a control module to maintain overall ion balance. For example, in the electrochemical regeneration unit, Background ions are used to maintain the conductivity of the electrolyte, but as the operating time increases, ions from other units may mix into the electrolyte, causing... The concentration changes. The control module can detect the solution conductivity and, as needed, replenish or dilute the electrolyte or adjust the flow rate to keep the efficiency of electrochemical generation of alkali and acid solutions stable.

[0047] Generated in the carbon dioxide release and pressurization unit Type III weak acid resins, these resins need to be regenerated periodically to restore their original state. Type structure. The regeneration process is carried out through an electrochemically generated acid solution, which... Displaced into the solution, allowing the resin to be regained. The regeneration solution produced Unreacted sulfate ions are returned to the electrochemical regeneration unit via a circulating liquid transport system, allowing these ions to continue participating in the electrochemical process and achieving continuous circulation. Because the system does not introduce external acids or bases, and all internal ions participate in different reactions during circulation, the system possesses a high degree of self-sustaining capability.

[0048] To further enhance the system's engineering adaptability, this invention allows for adjustments to the size, shape, and structure of each unit according to different application scenarios. For example, when the system is deployed in small residential, office, or community buildings, each unit can be designed as a modular structure, enabling rapid installation through standardized interfaces. In larger industrial settings, multiple DAC modules, multiple electrochemical units, and multiple mineralization reactors can be combined in parallel or series to achieve higher capture efficiency or higher storage capacity. The modular structure also facilitates maintenance; if a module fails, it can be quickly replaced without affecting the overall system operation.

[0049] To meet the needs of different operating conditions, this invention can use different types of resins as adsorbents and weak acid materials. For direct air capture units, in addition to copper-chelated weakly basic resins, functionalized adsorbents containing imine, imidazole, or quaternary ammonium structures can also be used. These materials have different... Adsorption mechanisms include, for example, acid-base reactions, ionic liquid immobilization, or hydrogen bonding-driven adsorption. In the electrochemical regeneration stage, these materials can also be regenerated through... Solution regeneration enables the adsorbent to operate in a closed loop within the system, eliminating the need for external, high-energy-consuming regeneration methods.

[0050] In the carbon dioxide emission unit, the weak acid resin can also have different material bases, such as polymethacrylic acid, cross-linked polyacrylic acid, and sulfonated polystyrene as the backbone. The exchange capacity and particle size can be controlled to adjust the resin's composition. Release rate and pressure rise rate. In the water mineral separation and carbon sequestration unit, the resin selection can be based on the properties of the water. Concentration, temperature, pH, and the concentration of other ions are optimized. For example, in certain water bodies... At higher concentrations, selecting specific resins can improve [efficiency / reliability]. Its removal capacity makes the overall water softening effect better.

[0051] The system's control module manages components such as the electrochemical power source, circulating pump, valves, and sensors, ensuring the entire system operates according to a pre-programmed sequence. The control module can be implemented using a PLC or embedded microcontroller, acquiring real-time data such as carbon dioxide pressure, flow rate, pH, conductivity, temperature, and liquid level. When the system enters a certain stage, the control module automatically adjusts the pump speed, valve opening / closing positions, or electrochemical current based on the data. For example, when the resin in the direct air capture unit approaches saturation, the control module adjusts the pressure based on the resin outlet... The concentration change indicates a decrease in adsorption capacity, automatically switching to regeneration mode and activating the electrochemical unit to generate alkali solution that flows into the resin bed; after the carbon dioxide release unit pressure reaches the target value, the control module automatically opens the gas delivery valve to... It is transported to the mineralization unit.

[0052] The system of this invention can achieve continuous operation, with air continuously flowing through the DAC unit and resin continuously adsorbing... After adsorption saturation, it is regenerated by an electrochemically generated alkaline solution, producing... The solution enters the carbon dioxide release unit, where it is pressurized by a weak acid resin to generate carbon dioxide, which is then transported to the mineralization reactor. During mineralization, the carbon dioxide reacts with carbon dioxide in the hard water. Reaction generation Precipitation, and the reaction , The plasma then flows into the electrochemical unit via the circulating liquid transport system, allowing these ions to continue participating in the acid-base generation process. This cycle repeats continuously, forming a complete closed-loop carbon cycle that operates independently of external systems. It can operate stably for a long time under the conditions of supply, external acid and alkali supply or external compression equipment.

[0053] During long-term operation, the system requires minimal maintenance for each unit. Because the resin material does not require high-temperature regeneration, it experiences minimal mechanical wear and has a longer lifespan than traditional DAC adsorbents. Electrode materials in the electrochemical regeneration unit, such as ruthenium-titanium coated electrodes and 316 stainless steel cathodes, exhibit good corrosion resistance and stability, allowing the electrochemical reaction to continue operating without performance degradation. Meanwhile, membrane materials such as AEM and BPM operate under low-voltage conditions, exhibiting moderate water dissociation rates and are not easily damaged by high temperatures or high currents, resulting in excellent overall system durability.

[0054] During the operation of this system, the migration paths of ions between different units are crucial, determining whether the system can achieve continuous operation and internal material closed-loop circulation. Taking the electrochemically generated alkaline solution as an example, after entering the resin bed of the direct air capture unit, this alkaline solution will react with the resin... – The complex structure undergoes a desorption reaction, causing... regain access to The empty space for combination, and by Form enters the solution, corresponding and The electrolyte originates from the intermediate cavity of the electrochemical unit. As the regenerated active alkali solution continues to react with the resin, the generated... The solution is transported to the carbon dioxide release unit through a collection pipeline. During this process, the pH and temperature of the solution are monitored in real time by a control module to ensure suitable reaction conditions.

[0055] In weak acid resin and After the solution comes into contact, the resin surface and The reaction produces This reaction is affected by the pH and temperature of the solution. If the reaction temperature is high, The release rate is faster, and the pressure rises more rapidly; if the temperature is low, then... The formation rate decreases, but the system's solubility increases, which may prolong the formation period. Release phase. During system operation, conditions are typically maintained at room temperature or slightly above room temperature to keep the reaction rate and gas pressure within a suitable range. If the ambient temperature is low, the heating element can be adjusted via the control module to maintain the reaction zone temperature between 20–35°C to ensure... Continuous generation.

[0056] Inside the carbon dioxide release unit, the resin reacts with... Contact gradually transforms into The type, this change unfolds through chemical equilibrium, its essence is and Exchange reaction at the resin-solution interface. As the resin gradually loses... , and The reactivity decreases, therefore, after a certain number of cycles, the resin needs to be regenerated using an electrochemically generated acid solution. The acid solution, upon entering the resin bed, will remove impurities from the resin. Displaced into the solution, allowing the resin to regain its original state. Type structure. And the accumulated in this regeneration solution and In subsequent cycles, the solution is returned to the electrochemical unit to continue participating in acid-base generation, preventing ions in the regenerated solution from accumulating in the system and thus avoiding system instability caused by disordered increase in solution concentration.

[0057] To ensure the structural stability of the carbon dioxide release unit, this system incorporates a reinforcing rib structure on the exterior of the container and constructs the reaction vessel using pressure-resistant materials (such as high-pressure resistant polyethylene, glass fiber reinforced plastic, and thin-walled stainless steel) to withstand a safe pressure limit of at least 0.6 MPa. Furthermore, to prevent leakage due to structural fatigue, the container interfaces employ threaded connections with sealing gaskets or clamp-type quick-connect structures to ensure reliable sealing. A pressure sensor is installed at the top of the container, enabling the system to monitor the internal pressure in real time and control the valve opening and closing via the control module. The timing of delivery to the water mineral separation and carbon sequestration unit is rationally regulated, thereby achieving automated pressure control.

[0058] The reactor interior of the water mineral separation and carbon sequestration unit can be configured with various structures to enable... The dissolution process is more complete. For example, a spray structure can be used to apply pressure. The air is sprayed evenly from the top of the reactor, ensuring that the fine air bubbles come into full contact with the water, thereby improving... Dissolution efficiency; or a multi-stage debubbling mesh can be used to reduce the size of bubbles as they pass through the mesh layers, increasing the contact area. Furthermore, to make the mineralization reaction more efficient, a fluidized bed or moving bed structure can be used to maintain dynamic contact between the resin and water, improving... Switching rate and Sedimentation rate.

[0059] In some scenarios, to improve water softening efficiency, a certain amount of seed crystals can be added to the reactor. Precipitates are more prone to nucleation, thus increasing the reaction rate. In a flowing system, the higher the supersaturation, the faster the crystal formation; therefore, controlling... Input flow rate and pressure can affect the quality and morphology of the precipitate. As the mineralization reaction nears completion, the pH of the solution tends to decrease. The concentration decreased, causing The generation rate slows down; this can be adjusted via the control module. The input, combined with the resin exchange capacity, enables the system to dynamically adjust the reaction process based on real-time data.

[0060] During long-term operation, the system may be affected by impurities in the water, resin abrasion particles, Factors such as the precipitation of microcrystals make it essential to incorporate filtration devices into the circulating fluid transfer system. For example, a filter can be installed before the fluid reaches the electrochemical unit to prevent particulate matter from entering the narrow electrolytic cell channels or adhering to the membrane surface, thus affecting electrochemical reaction efficiency. To ensure the filtration system does not impact the overall flow rate, low-resistance membrane filters or porous ceramic filters can be used, with pore sizes selected within the range of 10–50 μm to effectively block particulate matter without significantly increasing system resistance.

[0061] To prevent abnormal pressure increases or decreases within the system, the control module is equipped with redundant safety mechanisms. For example, a back pressure valve is installed at the output of the water mineral separation and carbon sequestration unit to ensure the mineralization process takes place under stable pressure; a check valve is installed at the inlet of the DAC unit to prevent internal pressure fluctuations. Gas flows back into the adsorption unit; in The release unit is equipped with dual safety valves, which are triggered sequentially when the pressure reaches 0.45 MPa and 0.55 MPa respectively. The second safety valve serves as mechanical protection in extreme conditions. All sensor data is fed back to the control module in real time, enabling the system to maintain safe operation without human intervention.

[0062] The entire system is highly scalable. In scenarios requiring larger capture volumes, multiple DAC units can be connected in parallel, each using the same adsorption resin and having the same structure. The electrochemical regeneration unit can also be stacked, increasing the number of chambers or the effective membrane area to enhance acid-base generation capacity, allowing the system to adapt to high-flow-rate regeneration requirements. The carbon dioxide release unit can achieve continuous gas supply through multiple parallel reaction vessels operating in rotation. The water mineral separation and carbon sequestration unit can also employ multi-stage reactors connected in series or parallel to improve mineralization efficiency or treat water sources with different hardness levels. Furthermore, due to the use of standardized piping interfaces, each unit can be quickly replaced or expanded, adapting the system to different deployment scales.

[0063] In practical applications, this system can be installed in community buildings, schools, small factories, farms, data centers, and other locations to achieve miniaturization and distributed operation. Capture and containment tasks. For example, the system could be deployed near the school's air conditioning room to continuously capture data through airflow within the campus. And mineralize it into a form that can be safely stored. In some medium-sized enterprises, the system can be installed near ventilation vents to further improve capture efficiency; in farm environments, due to the presence of airborne pollutants... The system can automatically adjust the adsorption flow rate to adapt to large concentration variations. Operating conditions at the specified concentration.

[0064] This system can automatically adjust its operating mode according to different seasons and varying temperature and humidity environments. For example, in summer when humidity is high, the water film on the DAC resin surface thickens, which helps... Adsorption increases airflow; in dry winter conditions, the system automatically adds a small amount of humidifying water to the DAC inlet to maintain suitable humidity in the resin, thus improving adsorption efficiency. Simultaneously, it also improves the adsorption efficiency of the building's internal air. In scenarios with high concentrations, the system can complete the resin adsorption-regeneration cycle in a shorter period of time to adapt to... Working environments with high concentrations.

[0065] During system operation, Collection, resin regeneration, The four processes of pressurization, release, and mineralization precipitation actually constitute a continuous, multivariate coupled reaction chain. The operating state of each process affects subsequent steps; therefore, the system design requires dynamic adjustment of multiple variables. For example, when the adsorption unit captures... When the quantity is large, As the amount of solution generated increases, the reaction rate of the carbon dioxide release unit accelerates, and the internal pressure of the container rises more rapidly. The control module needs to adjust accordingly in advance. It is transported to the mineralization unit to prevent the container pressure from exceeding the safety threshold; while in the air... When the concentration is low and the DAC adsorption capacity is small, The release unit may need more time to reach the target pressure. At this time, the control module will extend the reaction time and appropriately adjust the rate of electrochemical generation of alkali solution to keep the overall system in a stable rhythm.

[0066] In direct air capture units, airflow is typically monitored using mass flow meters or anemometers. Under natural ventilation conditions, the system can also operate passively, allowing air to flow naturally through the DAC bed for capture. The resin's adsorption capacity is not only related to the amount of air... Concentration is relevant and also affected by air humidity. In high humidity conditions, the surface-bound water layer can aid in dissolution. This increases the diffusion rate, resulting in higher adsorption efficiency; when humidity is low, the resin surface is drier. When there is insufficient proton donor required for the formation of coordination structures on the surface, the adsorption rate decreases. In this case, the system can improve the resin surface environment by adding a trace amount of water mist at the inlet. To achieve this function, an atomizing nozzle can be installed at the inlet of the DAC unit, and the control module can perform precise spraying based on humidity data to keep the resin at a suitable moisture content at all times.

[0067] In the electrochemical regeneration unit, the acid-base generation rate is directly proportional to the current density; therefore, the system can precisely control acid-base generation by adjusting the current magnitude. To prevent electrode polarization or ion accumulation on the membrane surface, the system can be set to a pulsed electrolysis mode. While maintaining the average current, the pulse gap can be appropriately adjusted to make the ion distribution at the membrane interface more uniform, thereby extending the membrane's lifespan. Furthermore, the electrochemically generated alkaline solution may carry a small number of air bubbles. These bubbles can affect the liquid distribution in the resin bed. Therefore, the outlet of the electrochemical intermediate chamber can be connected to a gas-liquid separator to remove the air bubbles before they enter the resin bed.

[0068] Weak acid resin in relation to During the solution reaction, due to Gradually decrease through exchange The capacity, and the exchange capacity of the resin, determines The release rate has an upper limit, therefore periodic regeneration is necessary. To ensure effective regeneration, the resin can be placed in a dedicated regeneration chamber, allowing the electrochemically generated acid to flow from bottom to top through the resin bed, ensuring full contact between the acid and the resin. After regeneration, the resin is reintroduced. The resin is released and continues to participate in the reaction of the next cycle. After several cycles of use, the resin performance may slightly decline, such as a decrease in exchange capacity and slight changes in pore structure. However, because the system operates at a low temperature, it will not cause serious degradation of the resin as in traditional thermal regeneration methods. Therefore, the overall lifespan of the resin is long, and it can be used continuously for several months or even longer, with low maintenance costs.

[0069] The interior of the carbon dioxide release and pressurization unit can also be equipped with a fluid distribution structure, such as a perforated plate, spiral guide vanes, or a fixed-bed distributor, which can make the solution more evenly distributed when entering the container, creating a uniform liquid environment for the resin bed and improving... The generation rate. Setting up a separate gas-liquid interface separation space at the top of the container enables the generation... Rapidly enter the gas zone, maintaining pressure in the liquid zone without causing a large amount of liquid to accompany it. Discharge. Additionally, a microporous flow barrier can be installed at the container outlet to... The output flow rate is more stable, preventing instantaneous pressure fluctuations from affecting the mineralization reactor.

[0070] The water mineral separation and carbon sequestration unit, as the final reaction zone, has a significant impact on the overall system operation. In addition to the water body... It may also contain , , Plasma, these ions will react with dissolved... A precipitation reaction occurs, therefore, it may form during the mineralization process. , Solid precipitation occurs. The system can be optimized by selecting the resin and setting the mineralization reaction conditions to make the precipitation process as smooth as possible. Inclined. If in water At higher concentrations, it is possible to use Resins with lower selectivity allow for more... and Combine, reduce This process forms, resulting in purer precipitates. The quality of the precipitate can be monitored using a particle analyzer, turbidity meter, or offline water quality testing device, and adjusted through feedback. Pressure and flow rate keep the sedimentation quality stable.

[0071] This invention's system, through dynamic adjustment of multiple units, can adapt to different water qualities, air compositions, and temperature and humidity environments, exhibiting high overall versatility. In hot and humid regions, the DAC resin exhibits high adsorption efficiency while consuming less alkali solution generated electrochemically; in cold and dry environments, adsorption efficiency is lower, but the resin's adsorption capacity can be restored by appropriately increasing the alkali solution flow rate and humidifying the system. In the water mineral separation section, if the water hardness is low... With reduced mineralization requirements, the system can utilize excess resources. Temporarily retain the mixture in the container to allow the reaction to stabilize; if the water hardness is high, this can be addressed by increasing the reaction time or raising the [water hardness level]. Input pressure increases the mineralization rate.

[0072] During long-term continuous operation, each unit needs to maintain a high degree of matching to ensure optimal adsorption capacity, electrochemical generation power, and other parameters. A balance is maintained between release rate and mineralization capacity. When the capacity of a certain unit decreases, the control module can automatically adjust the system operating strategy, such as reducing the adsorption flow rate, increasing the electrochemical alkali generation rate, and extending the time. Release time and increased residence time of mineralized units are used to maintain the dynamic balance within the system.

[0073] This system employs a low-energy, low-temperature electrochemical method for resin regeneration, resulting in significantly lower overall energy consumption compared to traditional DAC systems. In many traditional DAC technologies, adsorbent regeneration requires a thermal input of 80–120°C, while this system achieves room-temperature regeneration through electrochemical means, drastically reducing energy consumption. The electrochemical membrane operates at only 0.5–8 V, exhibiting higher energy efficiency compared to conventional water dissociation processes. This enables the system to operate in small-scale power supply environments, such as those powered by solar panels or community microgrids.

[0074] This invention utilizes direct air capture, electrochemical acid-base generation, and weak acid resin release. And the organic coupling of multiple units such as hard water carbonate mineralization has achieved The entire process, from adsorption to solid-state storage, operates without relying on external acids, alkalis, or compression equipment. All reactants circulate internally, giving the system a high degree of self-sustainability. A control module centrally regulates the liquid and gas pathways, electrochemical parameters, and resin state, enabling the system to automatically adjust its operating mode according to environmental changes, achieving long-term stable continuous operation. This compact system features low energy consumption and simple maintenance, making it particularly suitable for deployment in communities, homes, buildings, farms, factories, and other similar settings, meeting the practical needs of future distributed carbon management and carbon sequestration.

[0075] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A distributed carbon management integrated system that can self-implement carbon capture, carbon utilization, and carbon sequestration in a single system, characterized in that, The application relates to a carbon cycle closed loop system, which comprises: a direct air capture unit, which is a fixed bed filled with copper chelated weak base resin, used for adsorbing carbon dioxide in air; an electrochemical regeneration unit, which has an anode chamber, an intermediate chamber and a cathode chamber, and is separated by an anion exchange membrane and a bipolar membrane respectively, and under the action of an external direct current, acid and alkali are generated in the system; a carbon dioxide release and pressurization unit, which is a closed container filled with weak acid cation exchange resin, used for reacting with sodium bicarbonate solution obtained after regeneration of the resin from the electrochemical regeneration unit to generate and self-pressurize carbon dioxide gas; A water mineral separation and carbon sequestration unit is a fixed bed reactor filled with weakly acidic resins or other materials capable of exchanging for bicarbonate ions under pressurized carbon dioxide to produce calcium carbonate precipitate in the water body ​ a circulating liquid transmission system and a control module, which are used for realizing solution transmission, ion reflux and pressure regulation among the above-mentioned units. The direct air capture unit saturated resin is regenerated by the alkali generated by the electrochemical regeneration unit and forms sodium bicarbonate solution. The weak acid cation exchange resin in the carbon dioxide release and pressurization unit is regenerated by the acid generated by the electrochemical regeneration unit and returns to the electrochemical regeneration unit to generate acid or alkali again, thereby constructing a carbon cycle closed loop in the system. The sodium bicarbonate solution generates carbon dioxide gas in the carbon dioxide release and pressurization unit, which is introduced into the water-mineral separation and carbon sequestration unit and generates calcium carbonate solids; The reaction of the sodium bicarbonate solution and the weak acid resin can automatically increase the carbon dioxide pressure in the closed container to 0.35-0.45 MPa, so that the subsequent gas-liquid reaction does not need to be driven by external compression equipment.

2. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system according to claim 1, characterized in that: The copper-chelating weak basic resin contains primary amine groups and binds to form chelate structures, by reversible coordination to adsorb 400 - 1000 ppm of air .

3. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system according to claim 1, characterized in that: The electrochemical regeneration unit comprises a ruthenium titanium coating anode, a stainless steel conductive sheet cathode, and a three-cavity structure formed by stacking acrylic plates, with the middle cavity enriched under the action of an electric field Alkaline solution is generated, and the anode cavity is enriched Acid solution is generated.

4. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The bipolar membrane comprises an anion exchange layer and a cation exchange layer arranged in layers, the anion exchange layer is arranged to face the anode cavity, the cation exchange layer is arranged to face the cathode cavity, and under the action of an electric field, water is split in the intermediate cavity to generate , and in the anode cavity , to realize the synchronous generation of acid and alkali.

5. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The operating voltage of the electrochemical regeneration unit is 0.5-8 V, and the electrolyte is a 0.01-0.1 mol / L sodium sulfate solution.

6. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The carbon dioxide releasing and pressurizing unit is provided with a pressure sensor and a safety valve for regulating the output pressure and keeping the system safe.

7. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The water mineral separation and carbon sequestration unit in captured by ion exchange with the resin and dissolved to form carbonic acid solid after the carbonic acid is formed precipitation, achieving carbon sequestration.

8. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The liquid phase after the water body mineral separation and carbon sequestration unit reaction contains , and bicarbonate ions are transported back to the electrochemical regeneration unit by the circulating liquid transport system for maintaining the continuous generation of acid and base in the electrochemical regeneration unit as an electrolyte solution.

9. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system of claim 1, wherein: The direct air capture unit, the electrochemical regeneration unit, the carbon dioxide release and pressurization unit and the water body mineral separation and carbon sequestration unit are all provided with independent liquid path interfaces and gas path interfaces, the interfaces are connected through detachable connecting pipelines in the circulating liquid transmission system, the connecting pipelines adopt standardized joints, and the switching, isolation or series flow among the units is realized through a valve group in the control module, so that the units can be disassembled, replaced or connected in parallel under the premise of maintaining the continuity of the liquid path and the gas path.

10. The distributed carbon management integrated system that can self-implement carbon capture, carbon utilization and carbon sequestration in a single system according to claim 1, characterized in that: ​

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