Mineral carbonization installation with onboard carbon capture system

Abstract

A mineral carbonation device for a marine mobile body according to an embodiment of the present invention comprises: an electrolysis module for producing sodium hydroxide (NaOH) by electrolyzing seawater; a first compound generation module for producing sodium carbonate (Na2CO3) by reacting the sodium hydroxide produced in the electrolysis module with carbon dioxide (CO2) discharged from the marine mobile body; a second compound generation module for producing sodium bicarbonate (NaHCO3) by reacting the sodium carbonate produced in the first compound generation module with carbon dioxide discharged from the marine mobile body; and a processing module for storing and transporting the sodium bicarbonate in a slurry state. The first compound generation module comprises a first gas inhaler for inhaling carbon dioxide discharged from the marine mobile body; a first bubble-type reactor for generating microbubbles by the circulation pressure of a working fluid to increase the solubility of the carbon dioxide inhaled from the first gas inhaler; a first gravity-type reactor for producing sodium bicarbonate together with the first bubble-type reactor; and a device for storing the sodium bicarbonate. It is characterized by including a first storage tank equipped with a first acidity controller for preventing the formation of sodium bicarbonate by lowering the concentration of sodium hydroxide according to the hydrogen ion concentration index, and a circulation pump for circulating sodium bicarbonate stored in the first storage tank to the first gas inhaler.

Description

Technology Field

[0001] The present invention relates to a mineral carbonation device for marine transport, and more specifically, to a mineral carbonation device for marine transport that converts CO2 in ship exhaust gas into stable solid carbonates (Na2CO3, NaHCO3) by reacting NaOH generated by electrolyzing seawater with the carbonates to comply with international regulatory trends for greenhouse gas reduction, and stores the carbonates on board and processes them on land. Background Technology

[0002] The International Maritime Organization (IMO) established the Initial IMO GHG Strategy (2018) to reduce greenhouse gas emissions at sea and aims to reduce CO2 emissions per unit of transport by 40% by 2030 and total maritime emissions by at least 50% compared to 2008 levels by 2050. Accordingly, new regulations such as the Energy Efficiency Index (EEXI) and the Carbon Intensity Index (CII) were introduced in MARPOL Annex VI and have been fully implemented since 2023.

[0003] Since these regulations evaluate ship grades based on actual emissions during operation in addition to fuel consumption, simply improving fuel efficiency is reaching its limits in terms of response. In particular, for large merchant vessels with high emission levels, such as cargo ships, oil tankers, and container ships, the need for technologies capable of reducing or capturing CO2 in real-time onboard is rapidly increasing.

[0004] Meanwhile, conventional CCS uses absorbents such as amine or potassium carbonate, absorbs compressed exhaust gas using large absorption towers, and separates CO2 by heating it in regeneration towers of similar size. Large pressure vessels and refrigeration systems are required to liquefy and store the separated CO2. However, ships lack the space to install large-scale storage devices that include such refrigeration functions, which poses a critical obstacle to CCS.

[0005] For example, if a standalone refrigeration unit is installed in an open 20-foot container to store liquefied CO2 and a cylindrical tank is installed in the remaining space, the maximum capacity of liquefied CO2 that can be stored in this tank is approximately 17.7 tons. Considering the volume that must be captured per day on a ship, the space required for the storage tank may limit the sailing distance or the number of days. Therefore, CO2 is mineralized to carbonate and stored in a liquid state (gel or semi-solid state) in bulk in the ship's ballast tanks or other general-purpose tanks, and then transported to land using a pump upon arrival. Furthermore, according to conventional CCS methods, a large amount of gas emitted from the ship's engines must be compressed to a pressure of 1 to 5 BAR through a compressor and sent to an absorption tower, and separating CO2 in the regeneration tower requires a pressure above a certain level (e.g., 3 to 5 BAR) and a temperature above 100°C.

[0006] Ultimately, conventional technology has the problem of high energy consumption, the inability to avoid additional CO2 emissions due to high electricity usage, and the increased potential for rising installation costs and maintenance costs resulting from increased failure factors as the device becomes larger and more complex.

[0007] An example of a greenhouse gas reduction technology using exhaust gas from a ship is disclosed in the following patent documents 1 and 2. Patent document 1 discloses a greenhouse gas emission reduction device for a ship that can absorb and remove CO2 by electrolyzing seawater and fresh water, and can produce electricity through the reduction and oxidation of Na to be used for electrolysis, by including a carbon dioxide absorption tower composed of a NaOH generation unit that generates NaOH by electrolyzing seawater and fresh water respectively, a CO2 removal unit that cools exhaust gas discharged from a ship engine by reacting it with seawater and chemically reacts the cooled exhaust gas with NaO to absorb and remove CO2, a sediment separation unit, and a water treatment unit that treats wash water generated by the chemical reaction between exhaust gas and seawater from the carbon dioxide absorption tower.

[0008] Patent Document 2 relates to a carbon dioxide and sulfur oxide capture system for ships that captures carbon dioxide in flue gas using a basic alkali mixture and can use the captured carbon dioxide to capture sulfur oxides in flue gas. The carbon dioxide and sulfur oxide capture system for ships discloses a technology that simultaneously captures carbon dioxide and sulfur oxides in a single system by utilizing sodium carbonate or sodium bicarbonate produced from the captured carbon dioxide as a desulfurizing agent to capture sulfur oxides in exhaust gas emitted from ships. Prior art literature

[0009] Korean Patent Publication No. 10-2724158 (Registered Nov. 04, 2024) Korean Patent Publication No. 10-2407193 (Registered Nov. 18, 2022) The problem to be solved

[0010] The objective of the present invention is to solve the problems described above, and to provide a mineral carbonation device applicable to a marine vehicle capable of capturing carbon by generating and storing sodium bicarbonate using the electrolysis of exhaust gas emitted from a marine vehicle and seawater.

[0011] In addition, another objective of the present invention is to provide a mineral carbonation device applicable to marine vehicles that can efficiently produce and store sodium carbonate and sodium bicarbonate even within the limited space of a marine vehicle by fixing carbon using a microbubble reactor and a high-gravity reactor together.

[0012] In addition, another objective of the present invention is to provide a mineral carbonation device applicable to marine transporters that can smoothly control the supply of carbon dioxide and sodium hydroxide by measuring and providing feedback on the hydrogen ion concentration in a sodium carbonate or sodium bicarbonate storage tank. means of solving the problem

[0013] A mineral carbonation device for application to a marine mobile body according to an embodiment of the present invention for achieving the above objective is a mineral carbonation device utilizing exhaust gas discharged from a marine mobile body including a ship, comprising: an electrolysis module for producing sodium hydroxide (NaOH) by electrolyzing seawater; a first compound generation module for producing sodium carbonate (Na2CO3) by reacting the sodium hydroxide produced in the electrolysis module with carbon dioxide (CO2) discharged from the marine mobile body; a second compound generation module for producing sodium bicarbonate (NaHCO3) by reacting the sodium carbonate produced in the first compound generation module with carbon dioxide discharged from the marine mobile body; and a processing module for storing and transporting the sodium bicarbonate in a slurry state. The first compound generation module comprises a first gas inhaler for inhaling carbon dioxide discharged from the marine mobile body; a first bubble-type reactor for generating microbubbles by the circulation pressure of an operating fluid to increase the solubility of the carbon dioxide inhaled from the first gas inhaler; and together with the first bubble-type reactor It is characterized by comprising a first gravity reactor for producing sodium bicarbonate, a first storage tank for storing the sodium bicarbonate and having a first pH controller for preventing the formation of sodium bicarbonate by lowering the concentration of sodium hydroxide according to the hydrogen ion concentration index, and a circulation pump for circulating the sodium bicarbonate stored in the first storage tank to the first gas inhaler.

[0014] In addition, according to the mineral carbonation device for marine mobile bodies according to an embodiment of the present invention, the second compound generation module comprises a second gas inhaler for inhaling carbon dioxide discharged from the marine mobile body, a second bubble-type reactor for generating microbubbles by the circulation pressure of a working fluid to increase the solubility of the carbon dioxide inhaled from the second gas inhaler, a second gravity-type reactor for generating sodium bicarbonate together with the second bubble-type reactor, and a second storage tank for storing the sodium bicarbonate, wherein the second acidity controller is provided to prevent the sodium bicarbonate from being converted into sodium hydroxide according to the hydrogen ion concentration index.

[0015] In addition, according to the mineral carbonation device for marine mobile applications according to an embodiment of the present invention, the second gas inhaler is characterized by controlling the hydrogen ion concentration according to the control of the second acidity controller and supplying carbon dioxide to the second bubble-type reactor.

[0016] In addition, according to the mineral carbonation device for marine mobile applications according to an embodiment of the present invention, the second compound generation module is characterized by further including a dehydration device for controlling the moisture content of sodium bicarbonate.

[0017] In addition, according to the mineral carbonation apparatus for marine mobile bodies according to an embodiment of the present invention, the first bubble-type reactor and the second bubble-type reactor are each characterized by having a plurality of microbubble reactors connected in series.

[0018] In addition, according to the mineral carbonation apparatus for marine mobile applications according to an embodiment of the present invention, the microbubble reactor is characterized in that an orifice plate is disposed between a fluid inlet and a fluid outlet, and the orifice plate has a plurality of bubble holes.

[0019] In addition, according to the mineral carbonation device for marine mobile bodies according to an embodiment of the present invention, the bubble hole is characterized by having a diameter that narrows from the fluid inlet to the fluid outlet.

[0020] In addition, according to the mineral carbonation apparatus for marine mobile bodies according to an embodiment of the present invention, the first bubble-type reactor and the second bubble-type reactor each include a microbubble reactor, wherein the microbubble reactor is provided with a plurality of orifice plates disposed between a fluid inlet and a fluid outlet and a plurality of bubble holes formed in the orifice plates, and the diameter of the bubble holes narrows as they go from the fluid inlet to the fluid outlet.

[0021] In addition, according to the mineral carbonation apparatus for marine mobile bodies according to an embodiment of the present invention, the first gravity-type reactor and the second gravity-type reactor are characterized by comprising: a main body forming an exterior to have an internal space; a fluid rotation chamber located inside the main body for rotating an incoming fluid; a discharge chamber located inside the fluid rotation chamber for introducing and discharging the rotating fluid; and a reaction pipe arranged inside the main body to penetrate a part of the fluid rotation chamber and the discharge chamber, for introducing the fluid discharged from the discharge chamber and discharging it into the space between the fluid rotation chamber and the main body.

[0022] In addition, according to the marine mobile body application mineral carbonation device according to an embodiment of the present invention, the first compound generation module and the second compound generation module are characterized by selectively absorbing and separating carbon dioxide. Effects of the invention

[0023] As described above, according to the mineral carbonation device for marine transporters according to an embodiment of the present invention, the effect of efficiently capturing carbon is obtained by generating and storing sodium bicarbonate using the electrolysis of exhaust gas emitted from marine transporters and seawater.

[0024] In addition, according to the mineral carbonation device for marine transporters according to an embodiment of the present invention, by using a microbubble reactor and a high-gravity reactor together to fix carbon, the effect of efficiently producing and storing sodium carbonate and sodium bicarbonate even within the limited space of a marine transporter is obtained.

[0025] In addition, according to the mineral carbonation device for marine mobile bodies according to an embodiment of the present invention, the effect of smoothly controlling the supply of carbon dioxide and sodium hydroxide is obtained by measuring and feeding back the hydrogen ion concentration in a sodium carbonate or sodium bicarbonate storage tank. Brief explanation of the drawing

[0026] FIG. 1 is a block diagram illustrating a mineral carbonation apparatus for marine mobile applications according to an embodiment of the present invention. Figure 2 is a diagram for explaining the electrolysis module of Figure 1 in more detail. FIG. 3 is a diagram for explaining the first compound generation module of FIG. 1 in more detail. Figure 4 is a drawing showing the gas inhaler of Figure 3. Figure 5 is a diagram showing the microbubble type reactor of Figure 3. Figure 6 is a diagram showing a cross-section of the gravity reactor of Figure 3. FIG. 7 is a diagram for explaining the second compound generation module of FIG. 1 in more detail. Figure 8 is a diagram for explaining the processing module of Figure 1 in more detail. Specific details for implementing the invention

[0027] The above and other objects and novel features of the present invention will become more apparent from the description in this specification and the accompanying drawings.

[0028] The size and thickness of each component shown in the description and drawings of the present invention are depicted arbitrarily for convenience of explanation, and therefore the present invention is not necessarily limited to what is illustrated. Additionally, thicknesses have been enlarged in the drawings to clearly represent various layers and regions, and the thickness of some layers and regions has been exaggerated for convenience of explanation.

[0029] In the description of the invention, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0030] The terms “part,” “module,” or “part” as used herein perform at least one function or operation and may be implemented as hardware or software consisting of mechanical or electrical / electronic configurations, or as a combination of hardware and software; and a plurality of “parts,” “modules,” or a plurality of “parts” may be integrated into at least one module and implemented by at least one processor, except for the “parts,” “modules,” or “parts” that need to be implemented in specific hardware.

[0032] Hereinafter, a mineral carbonation apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8.

[0033] FIG. 1 is a block diagram illustrating a mineral carbonation apparatus for marine mobile applications according to an embodiment of the present invention. FIG. 2 is a diagram illustrating the electrolysis module of FIG. 1 in more detail. FIG. 3 is a diagram illustrating the first compound generation module of FIG. 1 in more detail, and FIG. 4 is a diagram showing the gas intake device of FIG. 3. FIG. 5 is a diagram showing the microbubble-type reactor of FIG. 3, and FIG. 6 is a diagram showing a cross-section of the gravity-type reactor of FIG. 3. FIG. 7 is a diagram illustrating the second compound generation module of FIG. 1 in more detail. FIG. 8 is a diagram illustrating the processing module of FIG. 1 in more detail.

[0034] Referring to FIG. 1, a mineral carbonation device (100) according to an embodiment of the present invention includes an electrolysis module (200), a first compound generation module (300), a second compound generation module (400), and a processing module (500). Hereinafter, the mineral carbonation device (100) is described as being applied to a marine mobile body, but is not limited thereto and can be applied to various systems that emit a large amount of exhaust gas, such as a fixed structure at sea or a structure on land.

[0035] The above mineral carbonation device (100) may be a device for generating, storing, and transporting NaHCO3, which is called sodium bicarbonate or sodium carbonate. The above mineral carbonation device (100) can generate sodium bicarbonate with very high throughput and low unit cost. In addition, the device (100) is very practical when operation is required to mineral carbonate a large amount of CO2 in real time and store the generated NaHCO3 in a limited space, such as a ship. Furthermore, since the device (100) is applied to a marine vehicle in an optimal embodiment, it can easily generate sodium hydroxide (NaOH) required for the production of sodium bicarbonate by electrolyzing seawater.

[0036] Referring to FIG. 2, the electrolysis module (200) electrolyzes seawater to produce sodium hydroxide (NaOH), Cl2, and H2. The electrolysis module (200) is configured to include a supply pump (210) that supplies seawater from a sea chest of a marine vehicle, a pretreatment device (220), an electrolytic cell (230), a gas discharge device (240), an NaOH production tank (250), and an NaOH storage tank (260).

[0037] The above pretreatment device (220) filters and precipitates seawater flowing in from the supply pump (210) to remove suspended matter, e.g., Ca 2 + and Mg 2 + The pretreatment device (220) is removed, and scale formation in the electrolysis module (200) is prevented using supplied NaOH and Na2CO3. An electrolytic cell (230) is connected to the pretreatment device (220). The electrolytic cell (230) electrolyzes seawater by optimally setting process parameters such as NaCl concentration, temperature, electrolytic voltage, and current density. The electrolytic cell (230) can control electrical conductivity so that the concentration of NaCl is optimally set. The optimal concentration of NaCl may be 20 to 25 wt%.

[0038] The above gas discharge device (240) can be connected to the electrolytic cell (230) to discharge H2 and Cl2. In this case, Cl2 may be neutralized into NaOH through an absorption tower. The NaOH generation tank (250) stores the NaOH generated in the electrolytic cell (230). For example, the generation tank (250) can store sodium hydroxide at a concentration of 30 to 50 wt%. The above NaOH storage tank (260) can be utilized as a storage tank for supplying NaOH when a marine vehicle navigates a freshwater area or when the device (100) of the present invention is applied for land use. The electrolysis reaction in the above electrolytic cell (230) can be represented by the following reaction equation.

[0040] Anode (Oxidation): 2Cl- → Cl2+ 2e - (Chlorine gas generation)

[0041] Cathode (Reduction): 2H2O + 2e - → H2 + 2OH - (Generation of hydrogen gas and hydroxide ions)

[0042] Overall reaction: 2NaCl(aq)+2H2O(l) → Electrolysis → Cl2(g)+H2(g)+2NaOH(aq)

[0044] Referring to FIGS. 3 to 6, the first compound generation module (300) produces sodium carbonate (Na2CO3) by reacting sodium hydroxide produced in the electrolysis module (200) with carbon dioxide (CO2) emitted from a marine transporter. The first compound generation module (300) is connected to the electrolysis module (200). The first compound generation module (300) produces sodium carbonate by injecting carbon dioxide gas, which is a large amount of gas emitted from a marine transporter, into an aqueous solution of sodium hydroxide. The main reaction in the first compound generation module (300) is as shown in the reaction equation below.

[0046] Scheme: 2NaOH(aq) + CO2(g) → Na2CO3(aq) + H2O(l)

[0048] The first compound generation module (300) comprises a first gas inhaler (310), a first bubble-type reactor (320), a first gravity-type reactor (330), a first storage tank (340), and a first circulation pump (350).

[0049] The first gas inhaler (310) sucks in carbon dioxide emitted from a marine moving body, processes it, and supplies it to the first bubble-type reactor (320). The first gas inhaler (310) may be an eductor that sucks in exhaust gas without power in the order of nozzle acceleration, mixing, and diffusion. The first gas inhaler (310) may suck in exhaust gas by connecting multiple eductors in series or in parallel. The eductor has excellent durability and maintenance efficiency because it requires very little installation space and has very few parts compared to an electric blower or compressor of the same capacity. The eductor has a vacuum of about -0.3 BAR (g) when sucking in exhaust gas and can discharge exhaust gas at a pressure of 0.5 to 1.0 BAR (g). In this case, the working fluid may be an aqueous solution of at least one of sodium hydroxide and sodium carbonate, and the working fluid flow rate and pressure may be in the range of about 10 to 15 LPM and 1.5 to 2.0 BAR(g), respectively.

[0050] The first bubble-type reactor (320) may be a microbubble reactor capable of generating microbubbles using the circulation pressure of the working fluid. The first bubble-type reactor (320) has the advantage of having a simple structure, which results in fewer breakdowns and easier maintenance. It is preferable for the first bubble-type reactor (320) to operate such that the bubble size is 10 to 50 μm, taking into account dissolution efficiency. The first bubble-type reactor (320) is equipped with an orifice plate (321) positioned between a fluid inlet and a fluid outlet. The orifice plate (321) has a plurality of bubble holes (322) whose diameter narrows from the fluid inlet to the fluid outlet. That is, the orifice plate (321) may be positioned in an orifice tube (323) where the fluid inlet and fluid outlet are formed. Meanwhile, the first bubble-type reactor (320) may be configured to improve reaction efficiency by connecting a plurality of microbubble reactors in series. Additionally, the first bubble-type reactor (320) may also control the reaction by arranging orifice plates (321) spaced apart and in series between a plurality of orifice tubes (323).

[0051] The orifice plate (321) is positioned between the fluid passages to drastically reduce the cross-sectional area of ​​the passages, and as the fluid passes through the bubble holes (322), it experiences an increase in flow velocity and a decrease in pressure. When the pressure decreases below the saturated vapor pressure of the liquid, cavitation (vapor bubble generation) begins, and as the fluid passes through the bubble holes (322) and the cross-sectional area of ​​the passage widens again, the pressure is restored. At this time, the generated vapor bubbles collapse violently, finely breaking the surrounding gas bubbles to form micro or nano bubbles.

[0052] In this case, inducing a pressure drop too large at once can cause excessive cavitation erosion or unstable flow, so the pressure increase and recovery process can be divided into multiple stages to induce more stable and controllable cavitation. This can be achieved by connecting multiple microbubble reactors in series or by connecting orifice tubes (323) having multiple orifice plates (321) in series to further finer the bubbles. Through this process, gas solubility can also be increased.

[0053] The first gravity reactor (330) produces sodium bicarbonate together with the first bubble reactor (320). The first gravity reactor (330) can accelerate the reaction of the fluid and the separation of materials in a high-gravity environment (e.g., 100G or more) that is much stronger than gravity by using a high-speed rotating device. That is, the first gravity reactor (330) enables efficient absorption and separation of carbon dioxide. Therefore, the first gravity reactor (330) can be implemented as a High Gravity Enhanced Efficiency (HiGEE) reactor.

[0054] The first gravity-type reactor (330) is configured to include a main body (331) that forms an exterior to have an internal space, a fluid rotation chamber (332), a discharge chamber (333), and a reaction pipe (334). The fluid rotation chamber (332) is located inside the main body (331) and rotates the incoming fluid. The discharge chamber (333) is located inside the fluid rotation chamber (332) and introduces and discharges the rotating fluid. The reaction pipe (334) is positioned to penetrate parts of the fluid rotation chamber (332) and the discharge chamber (333) inside the main body (331). The reaction pipe (334) introduces the fluid discharged from the discharge chamber (333) and discharges it into the space between the fluid rotation chamber (332) and the main body (331).

[0055] The above first gravity-type reactor (330) can improve the absorption rate of carbon dioxide by 20 to 50 times compared to a conventional absorption tower by adopting a high gravity reactor, thereby increasing the liquid phase mass transfer coefficient (kL) and specific surface area (a).

[0056] The device (100) of the present invention adopts a first gravity-type reactor (330), so that when a gas containing carbon dioxide enters the reactor, it reacts rapidly with an absorbent in a high-gravity environment to dissolve the carbon dioxide in the liquid phase. In addition, the device (100) of the present invention uses a microbubble reactor and a high-gravity-type reactor together, thereby increasing the contact area between carbon dioxide and sodium hydroxide and increasing the efficiency of the sodium carbonate generation reaction. The device (100) has an energy saving effect of 40 to 60%, as the carbon dioxide absorption efficiency increases by about 2.5 to 3.0 times compared to a single reaction and the amount of carbon dioxide captured relative to energy input can be improved.

[0057] Sodium carbonate produced in the first bubble-type reactor (320) and the first gravity-type reactor (330) is stored in the first storage tank (340). In the initial stage of the reaction, sodium carbonate is produced by the reaction of carbon dioxide and sodium hydroxide, but sodium bicarbonate may be produced if the concentration of sodium hydroxide decreases or if an excess amount of carbon dioxide is injected. Therefore, the first compound production module (300) must control the hydrogen ion concentration to suppress the production of sodium bicarbonate. To this end, the first storage tank (340) is equipped with a first acidity controller (360) to control the hydrogen ion concentration index. The first storage tank (340) may be equipped with a stirring device (not shown) to prevent the precipitation of sodium carbonate, and the device (100) may also be equipped with a CO2 sensor to detect changes in carbon dioxide concentration during the operation of the marine moving body. Additionally, the device (100) includes a first circulation pump (350) for circulating sodium bicarbonate stored in a first storage tank (340) to a first gas inhaler (310).

[0058] Referring to FIG. 7, a second compound generation module (400) is shown for generating sodium bicarbonate by reacting sodium carbonate generated in a first compound generation module (300) with carbon dioxide emitted from a marine transporter. The second compound generation module (400) is configured to include a second gas inhaler (410), a second bubble-type reactor (420), a second gravity-type reactor (430), a second storage tank (440), and a second circulation pump (450).

[0059] The second gas intake device (410) sucks in carbon dioxide emitted from a marine moving body and supplies it to the second bubble-type reactor (420). The second bubble-type reactor (420) generates microbubbles using the circulation pressure of the working fluid to increase the solubility of the carbon dioxide sucked in from the second gas intake device (410). The second bubble-type reactor (420) produces sodium bicarbonate together with the second gravity-type reactor (430). The second bubble-type reactor (420) may consist of multiple microbubble reactors connected in series. The second storage tank (440) stores the sodium bicarbonate generated and leached from the second bubble-type reactor (420) and the second gravity-type reactor (430). The reaction in the second compound generation module (400) can be summarized by the following reaction equation.

[0061] Reaction formula: Na2CO3(aq) + CO2(g) + H2O(l) → 2NaHCO3(s)

[0063] Additionally, the first compound generation module (300) includes a second circulation pump (450) for circulating sodium bicarbonate stored in the second storage tank (440) to the second gas inhaler (410).

[0064] At high temperatures, sodium bicarbonate can decompose and be converted into sodium carbonate by the reverse desorption of carbon dioxide, so it is preferable that the reaction be carried out in a temperature range of 30 to 40°C. Accordingly, the second storage tank (440) stores sodium bicarbonate, and is equipped with a second acidity controller (460) to prevent sodium bicarbonate from being converted into sodium hydroxide according to the hydrogen ion concentration index. In this case, the second gas inhaler (410) supplies carbon dioxide to the second bubble-type reactor (420) by adjusting the hydrogen ion concentration according to the control of the second acidity controller (460). The second storage tank (440) is equipped with an agitator (not shown) to prevent the precipitation of sodium bicarbonate. In addition, the second storage tank (440) is equipped with a dehydration device (not shown) to control the moisture of the sodium bicarbonate. The detailed configurations of the second gas inhaler (410), second bubble-type reactor (420), second gravity-type reactor (430), and second storage tank (440) are identical to those of the first gas inhaler (310), first bubble-type reactor (320), first gravity-type reactor (330), and first storage tank (340), respectively, so a detailed description is omitted.

[0065] Referring to FIG. 8, a processing module (500) is connected to the second compound generation module (400). The processing module (500) stores and transports sodium bicarbonate in a slurry state. Since sodium bicarbonate has a high solid content and high viscosity in a slurry or gel state suspended in water, dedicated pumps and equipment are required to unload it. The device (100) of the present invention can generate and store sodium bicarbonate in a slurry or gel state on a marine transport vehicle and transport it to land through dedicated pumps and equipment.

[0067] Although the invention made by the inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the gist thereof. Industrial applicability

[0068] By using the mineral carbonation device applied to a marine mobile body according to the present invention, carbon dioxide can be reduced or captured in real time on large merchant vessels such as cargo ships, oil tankers, and container ships that emit a large amount of carbon dioxide. Explanation of the symbols

[0069] 100: Mineral Carbonation Device 200: Electrolysis Module 300: 1st Compound Generation Module 400: 2nd Compound Generation Module 500 : Processing module

Claims

Claim 1 A mineral carbonation device utilizing exhaust gas emitted from a marine moving body including a ship, comprising: an electrolysis module for producing sodium hydroxide (NaOH) by electrolyzing seawater; a first compound generation module for producing sodium carbonate (Na2CO3) by reacting the sodium hydroxide produced in the electrolysis module with carbon dioxide (CO2) emitted from the marine moving body; and a second compound generation module for producing sodium bicarbonate (NaHCO3) by reacting the sodium carbonate produced in the first compound generation module with carbon dioxide emitted from the marine moving body. and includes a processing module for storing and transporting the sodium bicarbonate in a slurry state, wherein the first compound generation module comprises: a first gas inhaler for inhaling carbon dioxide emitted from the marine moving body; a first bubble-type reactor for generating microbubbles by the circulation pressure of a working fluid to increase the solubility of the carbon dioxide inhaled from the first gas inhaler; a first gravity-type reactor for generating sodium bicarbonate together with the first bubble-type reactor; and a first storage tank for storing the sodium bicarbonate, provided with a first pH controller to prevent the formation of sodium bicarbonate by lowering the concentration of sodium hydroxide according to the hydrogen ion concentration index. The second compound generation module includes a circulation pump for circulating sodium bicarbonate stored in the first storage tank to the first gas inhaler, and the second compound generation module includes a second gas inhaler for inhaling carbon dioxide discharged from the marine mobile body; a second bubble-type reactor for generating microbubbles with the circulation pressure of the working fluid to increase the solubility of the carbon dioxide inhaled from the second gas inhaler; a second gravity-type reactor for generating sodium bicarbonate together with the second bubble-type reactor; and a second storage tank for storing the sodium bicarbonate, provided that the sodium bicarbonate is not converted into sodium hydroxide according to the hydrogen ion concentration index, and the first gravity-type reactor and the second gravity-type reactor comprise a main body forming an exterior to have an internal space;A mineral carbonation apparatus for marine mobile applications, characterized by comprising: a fluid rotation chamber located inside the main body for rotating an incoming fluid; a discharge chamber located inside the fluid rotation chamber for introducing and discharging the rotating fluid; and a reaction pipe disposed inside the main body to penetrate a portion of the fluid rotation chamber and the discharge chamber, for introducing the fluid discharged from the discharge chamber and discharging it into the space between the fluid rotation chamber and the main body. Claim 2 delete Claim 3 A marine mobile application mineral carbonation device according to claim 1, characterized in that the second gas intake device controls the hydrogen ion concentration according to the control of the second acidity controller and supplies carbon dioxide to the second bubble-type reactor. Claim 4 A mineral carbonation device for marine transport applications according to claim 1, characterized in that the second compound generation module further includes a dehydration device for controlling the moisture content of sodium bicarbonate. Claim 5 A mineral carbonation apparatus for marine transport in accordance with claim 1, wherein the first bubble-type reactor and the second bubble-type reactor are each characterized by a plurality of microbubble reactors connected in series. Claim 6 In claim 5, the microbubble reactor is characterized by having an orifice plate disposed between a fluid inlet and a fluid outlet, and the orifice plate having a plurality of bubble holes, in a marine mobile application mineral carbonation device. Claim 7 A mineral carbonation device for marine mobile applications, characterized in that, in claim 6, the bubble hole has a diameter that narrows from the fluid inlet to the fluid outlet. Claim 8 A mineral carbonation apparatus for marine mobile applications according to claim 1, wherein the first bubble-type reactor and the second bubble-type reactor each comprise a microbubble reactor, wherein the microbubble reactor comprises a plurality of orifice plates disposed between a fluid inlet and a fluid outlet; and a plurality of bubble holes formed in the orifice plates, wherein the diameter of the bubble holes narrows from the fluid inlet to the fluid outlet. Claim 9 delete Claim 10 A mineral carbonation device for marine mobile applications according to claim 1, wherein the first compound generation module and the second compound generation module selectively absorb and separate carbon dioxide.

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