Carbon capture system using potassium carbonate aqueous solution

Abstract

The present invention provides a carbon capture system using a potassium carbonate aqueous solution, comprising: a circulation module in which a potassium carbonate aqueous solution is stored; an absorption module connected to the circulation module for mixing the potassium carbonate aqueous solution introduced from the circulation module with exhaust gas introduced from the outside and dissolving carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; a regeneration module connected to the circulation module for separating carbon dioxide from a potassium bicarbonate aqueous solution in which carbon dioxide is dissolved and introduced from the circulation module; and a liquefaction module connected to the regeneration module for liquefying the separated carbon dioxide introduced from the regeneration module and storing the liquefied carbon dioxide, wherein the circulation module includes an HDC module for maintaining the pressure and flow rate of the potassium bicarbonate aqueous solution introduced from the absorption module and supplied to the regeneration module at a preset pressure and preset flow rate.

Description

Technology Field

[0001] The present invention relates to a carbon capture system using an aqueous potassium carbonate solution, and more specifically, to a carbon capture system using an aqueous potassium carbonate solution that improves renewable energy efficiency while also being advantageous in terms of stability, corrosion resistance, reaction speed, and maintenance. Background Technology

[0003] As environmental pollution emerges as a major global issue, there is a trend toward strengthening regulations on greenhouse gas emissions from manufactured goods.

[0004] Since establishing an initial greenhouse gas reduction strategy in 2018, the International Maritime Organization (IMO) has set medium-to-long-term goals to improve the carbon intensity of international shipping by at least 40% compared to 2008 levels by 2030 and to reduce total greenhouse gas emissions from international shipping by at least 50% compared to 2008 levels by 2050.

[0005] Subsequently, with the adoption of the “2023 Revised IMO GHG Strategy” at the 80th MEPC meeting in 2023, which aims to transition the net greenhouse gas emissions of the international shipping sector to a net-zero level by around 2050, a structural decarbonization transition is required across the entire shipping industry.

[0006] In addition, as part of the implementation of the IMO strategy, the Energy Efficiency of Existing Ships Index (EEXI) and the Carbon Intensity Index (CII) were introduced to evaluate the energy efficiency and carbon emission performance of existing ships, and are being implemented in stages starting in 2023 in accordance with MARPOL Annex VI.

[0007] In particular, the Carbon Intensity Index (CII) operates on an A to E grading system, and vessels receiving a D or E grade over a certain period are required to establish improvement plans and implement additional reduction measures. Consequently, this can impose direct constraints on vessel operation strategies (speed, sailing patterns, fuel selection, etc.), acting as a substantial management and operational risk factor for shipowners and shipping companies.

[0008] In this regard, the European Union (EU) has decided to include carbon dioxide emissions from the shipping sector in the EU ETS (Emission Trading System) starting in 2024.

[0009] Consequently, as ship operators directly bear carbon costs corresponding to emissions, it is highly likely that if carbon reduction is not achieved, this will act as a structural burden on the operating cost structure of shipping companies.

[0010] In addition, since regulations such as EEXI / CII evaluate ships based on "actual emissions during operation" as well as simple fuel consumption, there are clear technical limitations to achieving the tightened reduction targets (40% by 2030, 100% by 2050) through simple fuel efficiency improvements such as existing hull modifications or slow steaming.

[0011] Furthermore, carbon-free fuel propulsion vessels using ammonia, methanol, etc., are difficult to serve as an immediate alternative due to the immaturity of engine technology and the lack of fuel supply infrastructure.

[0012] Accordingly, there is a need to develop feasible and realistic technologies that can satisfy strengthened regulations (maintaining CII ratings and reducing EU-ETS costs) while maintaining current engine systems for large merchant vessels (container ships, VLCCs, large bulk carriers, etc.), which have absolutely high greenhouse gas emissions and require urgent regulatory compliance. Prior art literature

[0014] Republic of Korea Published Patent No. 2024-0183390 (December 11, 2024) The problem to be solved

[0015] The objective of the present invention, which aims to solve the above-mentioned problems, is to provide a carbon capture system using an aqueous potassium carbonate solution that improves renewable energy efficiency and offers advantages in terms of stability, corrosion resistance, reaction speed, and maintenance by dissolving carbon dioxide contained in exhaust gas in an aqueous potassium carbonate solution in an absorption module, separating carbon dioxide from the aqueous potassium bicarbonate solution in which carbon dioxide is dissolved in an absorption module, and liquefying the separated carbon dioxide in a liquefaction module to store the liquefied carbon dioxide.

[0017] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0019] The present invention, configured to achieve the above-mentioned purpose, provides a carbon capture system using a potassium carbonate aqueous solution, comprising: a circulation module in which a potassium carbonate aqueous solution is stored; an absorption module connected to the circulation module, which mixes the potassium carbonate aqueous solution introduced from the circulation module with exhaust gas introduced from the outside and dissolves carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; a regeneration module connected to the circulation module, which separates the carbon dioxide from the potassium bicarbonate aqueous solution in which the carbon dioxide is dissolved and introduced from the circulation module; and a liquefaction module connected to the regeneration module, which liquefies the separated carbon dioxide introduced from the regeneration module and stores the liquefied carbon dioxide, wherein the circulation module includes an HDC module that maintains the pressure and flow rate of the potassium bicarbonate aqueous solution introduced from the absorption module and supplied to the regeneration module at a preset pressure and preset flow rate.

[0020] In an embodiment of the present invention, the circulation module may include: a transfer tank in which the potassium carbonate aqueous solution is stored; a transfer pump connected to the transfer tank; and a circulation tank connected to the transfer pump to supply the potassium carbonate aqueous solution flowing in from the transfer tank by the transfer pump to the absorption module, and connected to the HDC module to receive at least a portion of the potassium bicarbonate aqueous solution flowing in from the absorption module.

[0021] In an embodiment of the present invention, the HDC module may include: a differential pressure control unit connected to the circulation tank, the absorption module, and the regeneration module to control the pressure of the potassium bicarbonate aqueous solution so that the potassium bicarbonate aqueous solution flowing in from the absorption module is supplied to the regeneration module at the preset pressure; and a flow rate maintenance unit connected to the differential pressure control unit to control the flow rate of the potassium bicarbonate aqueous solution passing through the differential pressure control unit so that the potassium bicarbonate aqueous solution passing through the differential pressure control unit is supplied to the regeneration module at a preset flow rate.

[0022] In an embodiment of the present invention, the differential pressure control unit comprises: a pressure maintaining unit connected to the absorption module and the flow rate maintaining unit to supply the potassium bicarbonate aqueous solution flowing in from the absorption module to the flow rate maintaining unit at the preset pressure; and a balance maintaining unit connected to the circulation tank, the pressure maintaining unit, and the flow rate maintaining unit to control the flow rate of the potassium bicarbonate aqueous solution flowing in from the absorption module so that the potassium bicarbonate aqueous solution flowing in is supplied to the regeneration module at the preset flow rate, wherein the balance maintaining unit can maintain the pressure acting in the pressure maintaining unit at the preset differential pressure by increasing the pressure of the potassium bicarbonate aqueous solution supplied from the absorption module to the circulation tank when the pressure of the potassium bicarbonate aqueous solution flowing in from the absorption module is higher than the preset pressure.

[0023] In an embodiment of the present invention, the circulation module may further include a circulation pump that connects the circulation tank and the absorption module to supply the potassium carbonate aqueous solution flowing in from the circulation tank to the absorption module.

[0024] In an embodiment of the present invention, the apparatus further comprises a first sensor unit installed in the circulation module to measure the pH, level, temperature, flow rate, and pressure of the potassium carbonate aqueous solution flowing inside the circulation module, wherein the first sensor unit may include: a first temperature sensor unit that measures the temperature of the transfer tank and the temperature between the circulation pump and the absorption module; a first flow sensor unit that measures the flow rate between the circulation pump and the absorption module, the flow rate between the absorption module and the differential pressure control unit, the flow rate between the circulation tank and the differential pressure control unit, and the flow rate between the differential pressure control unit and the regeneration module; and a first pressure sensor unit that measures the pressure between the circulation pump and the absorption module, the pressure between the absorption module and the differential pressure control unit, the pressure between the circulation tank and the differential pressure control unit, and the pressure between the differential pressure control unit and the regeneration module.

[0025] In an embodiment of the present invention, the first pressure sensor unit comprises: a first pressure sensor installed on a pipe connecting the circulation pump and the absorption module to measure a first pressure of the potassium bicarbonate aqueous solution supplied from the circulation pump to the absorption module; a second pressure sensor installed on a pipe connecting the absorption module and the differential pressure control unit to measure a second pressure of the potassium bicarbonate aqueous solution supplied from the absorption module to the differential pressure control unit; a third pressure sensor installed on a pipe connecting the circulation tank and the differential pressure control unit to measure a third pressure of the potassium bicarbonate aqueous solution supplied from the differential pressure control unit to the circulation tank; and a fourth pressure sensor installed on a pipe connecting the flow rate maintenance unit and the regeneration module to measure a fourth pressure of the potassium bicarbonate aqueous solution supplied from the flow rate maintenance unit to the regeneration module, wherein the differential pressure control unit can control the pressure of the potassium bicarbonate aqueous solution passing through the interior of the differential pressure control unit such that the third pressure increases when the second pressure is greater than the preset pressure.

[0026] In an embodiment of the present invention, the first flow sensor unit comprises: a first flow sensor installed on a pipe connecting the circulation pump and the absorption module to measure a first flow rate of the potassium bicarbonate aqueous solution supplied from the circulation pump to the absorption module; a second flow sensor installed on a pipe connecting the absorption module and the differential pressure control unit to measure a second flow rate of the potassium bicarbonate aqueous solution supplied from the absorption module to the differential pressure control unit; a third flow sensor installed on a pipe connecting the circulation tank and the differential pressure control unit to measure a third flow rate of the potassium bicarbonate aqueous solution supplied from the differential pressure control unit to the circulation tank; and a fourth flow sensor installed on a pipe connecting the flow maintenance unit and the regeneration module to measure a fourth flow rate of the potassium bicarbonate aqueous solution supplied from the flow maintenance unit to the regeneration module, wherein the flow maintenance unit can control the flow rate of the potassium bicarbonate aqueous solution so that the potassium bicarbonate aqueous solution supplied from the differential pressure control unit to the regeneration module is supplied at a preset flow rate.

[0027] In an embodiment of the present invention, the first temperature sensor unit may include: a first temperature sensor installed inside the transfer tank to measure the internal temperature of the transfer tank; and a second temperature sensor installed on a pipe connecting the circulation pump and the absorption module to measure the temperature of the potassium carbonate aqueous solution supplied from the circulation pump to the absorption module.

[0028] In an embodiment of the present invention, the first sensor unit comprises: a pH sensor unit installed inside the transfer tank to measure the pH of the potassium carbonate aqueous solution contained inside the transfer tank; and a level sensor unit including a low level detection sensor installed on the lower side inside the transfer tank to measure a first level of the potassium carbonate aqueous solution contained inside the transfer tank, and a high level detection sensor installed on the upper side inside the transfer tank to measure a second level of the potassium carbonate aqueous solution contained inside the transfer tank, wherein the first level may be lower than the second level.

[0029] In an embodiment of the present invention, the circulation module includes a first filtration unit that filters foreign substances contained in the potassium carbonate aqueous solution and the potassium bicarbonate aqueous solution moving between the circulation module and the absorption module, and the first filtration unit may include a first strainer installed on a pipe connecting the circulation tank and the circulation pump to remove foreign substances contained in the potassium carbonate aqueous solution supplied from the circulation tank to the circulation pump; and a second strainer installed on a pipe connecting the absorption module and the differential pressure control unit to remove foreign substances contained in the potassium bicarbonate aqueous solution supplied from the absorption module to the differential pressure control unit.

[0030] In an embodiment of the present invention, the circulation module further comprises a first valve unit for controlling the flow rate of the potassium carbonate aqueous solution and the flow rate of the potassium bicarbonate aqueous solution moving within the circulation module, wherein the first valve unit comprises: a manual valve installed at the top of the transfer tank that opens when supplying the potassium carbonate aqueous solution to the transfer tank; a solenoid valve installed on a pipe connecting the transfer tank and the circulation tank that controls the flow rate of the potassium carbonate aqueous solution supplied from the transfer tank to the circulation tank by the transfer pump; a drain valve installed at the bottom of the transfer tank that opens when discharging the potassium carbonate aqueous solution that was inside the transfer tank; and a manual valve installed on a pipe connecting the circulation tank and the circulation pump that controls the flow rate of the potassium carbonate aqueous solution supplied from the circulation tank to the circulation pump, wherein the manual valve may be closed when a malfunction occurs in at least one of the circulation module, the absorption module, the regeneration module, and the liquefaction module.

[0031] In an embodiment of the present invention, the absorption module may include: a gas injector connected to the circulation module for mixing the potassium carbonate aqueous solution supplied from the circulation module with exhaust gas supplied from the outside; at least one high-dispersion reaction module connected to the gas injector for generating microbubbles in the potassium carbonate aqueous solution and exhaust gas introduced from the gas injector to dissolve a portion of the carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; and an acceleration reaction module connected to the high-dispersion reaction module for forming an artificial high-gravity field and using the formed artificial high-gravity field to dissolve the remainder of the carbon dioxide in the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved in the high-dispersion reaction module and the exhaust gas into the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved.

[0032] In an embodiment of the present invention, the gas injector may include a fluid inlet connected to the circulation module into which the potassium carbonate aqueous solution supplied from the circulation module flows; and a gas inlet connected to the upper and lower parts of the fluid inlet into which the exhaust gas flows.

[0033] In an embodiment of the present invention, the fluid inlet comprises: a mixing pipe connected to the circulation module to mix the potassium carbonate aqueous solution introduced from the circulation module and the exhaust gas introduced from the gas inlet; and a flow pipe coupled to the other side of the mixing pipe to communicate with the mixing pipe, through which the potassium carbonate aqueous solution and the exhaust gas mixed in the mixing pipe flow. The gas inlet may comprise: a first gas inlet pipe connected to the upper part of the mixing pipe to introduce the exhaust gas; and a second gas inlet pipe connected to the lower part of the mixing pipe to face the first gas inlet pipe with respect to the mixing pipe to introduce the exhaust gas.

[0034] In an embodiment of the present invention, the at least one highly dispersed reaction module may be composed of three and combined in succession.

[0035] In an embodiment of the present invention, the high-dispersion reaction module comprises: an inlet flange portion connected to the gas injector to receive the potassium carbonate aqueous solution mixed in the gas injector and the exhaust gas; a bubble generating portion coupled to the other side of the inlet flange portion to generate microbubbles in the mixed potassium carbonate aqueous solution and exhaust gas flowing in from the inlet flange portion to dissolve a portion of the carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; and an outlet flange portion coupled to the other side of the bubble generating portion, wherein the reaction of the mixed potassium carbonate aqueous solution and exhaust gas flowing in from the bubble generating portion is promoted by the microbubbles to dissolve the carbon dioxide contained in the exhaust gas, and the bubble generating portion can increase the solubility of the carbon dioxide dissolved in the potassium carbonate aqueous solution by generating microbubbles to increase the contact area between the potassium carbonate aqueous solution and the exhaust gas.

[0036] In an embodiment of the present invention, the bubble generating part comprises: a bubble plate coupled to the other end of the inlet flange part and one end of the outlet flange part; and at least one orifice tube formed inside the bubble plate, wherein the width of the orifice tube may become narrower from one side to the other.

[0037] In an embodiment of the present invention, the bubble plate is formed to have an inner diameter equal to the inner diameter of the inlet flange portion and the inner diameter of the outlet flange portion, and the at least one orifice tube may be disposed inside the bubble plate.

[0038] In an embodiment of the present invention, the acceleration reaction module comprises: an inlet / outlet section including an inlet pipe connected to the high-dispersion reaction module through which a potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved in the high-dispersion reaction module and the exhaust gas are introduced, and an outlet pipe connected to the HDC module through which a potassium bicarbonate aqueous solution is discharged to the HDC module; and a reaction section into which the inlet pipe and the outlet pipe are inserted to receive the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved and the exhaust gas introduced through the inlet pipe. The apparatus includes an accelerating reaction unit positioned inside the reaction unit to communicate with the other side of the inlet pipe to form the artificial high gravity field, and using the artificial high gravity field to dissolve the remainder of the carbon dioxide in the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved in the high dispersion reaction module and the exhaust gas into the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved. The accelerating reaction unit can increase the solubility of the remainder of the carbon dioxide dissolved in the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved by increasing the mass transfer rate and reaction rate of the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved and the exhaust gas using the artificial high gravity field.

[0039] In an embodiment of the present invention, the reaction unit comprises: a reactor that receives a potassium carbonate aqueous solution in which a portion of the carbon dioxide introduced from the inlet pipe is dissolved and the exhaust gas; a gas discharge unit connected to the upper part of the reactor that discharges nitrogen and oxygen contained in the exhaust gas; and a drain connected to the lower part of the reactor, and an internal reactor may be formed in the internal central part of the reactor to divide the internal space of the reactor into a first internal space and a second internal space, and to receive the acceleration reaction unit in communication with the inlet pipe.

[0040] In an embodiment of the present invention, the inlet pipe is inserted into the side of the reactor so as to face the side of the acceleration reaction unit, the outlet pipe is inserted into the lower side of the reactor so as to face the inlet pipe, and one side of the outlet pipe may be bent so as to face the lower surface of the reactor.

[0041] In an embodiment of the present invention, the acceleration reaction unit comprises: an acceleration reactor located inside the inner reactor to form the artificial high gravity field; and a circulation pipe having its lower portion inserted into the interior of the acceleration reactor so as to be located inside the reactor and the acceleration reactor. When the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved and the exhaust gas are introduced into the interior of the acceleration reactor through the inlet pipe, the acceleration reactor can use the artificial high gravity field to dissolve the remainder of the carbon dioxide in the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved, and then discharge the potassium bicarbonate aqueous solution, the nitrogen, and the oxygen through the circulation pipe into the first internal space formed between the reactor and the inner reactor.

[0042] In an embodiment of the present invention, the apparatus further comprises a second valve section installed in the gas injector and the acceleration reaction module to control the flow rate of the exhaust gas supplied to the gas injector and the flow rate of the exhaust gas reacted in the acceleration reaction module, wherein the second valve section may include a first flow rate valve installed above the gas injector to control the flow rate of the exhaust gas supplied to the gas injector; and a second flow rate valve installed in the acceleration reaction module to control the flow rate of the exhaust gas reacted in the acceleration reaction module.

[0043] In an embodiment of the present invention, the regeneration module comprises: a stripping module connected to the HDC module to separate carbon dioxide from the potassium bicarbonate aqueous solution introduced through the HDC module and to generate a liquefied potassium carbonate aqueous solution and water vapor from the potassium bicarbonate aqueous solution; a condenser connected to the stripping module and to supply to the stripping module the condensate generated by condensing the water vapor among the carbon dioxide and water vapor introduced from the stripping module; and a vacuum pump that sucks in the carbon dioxide in the condenser under a vacuum state to separate the water contained in the carbon dioxide from the carbon dioxide and then supplies the carbon dioxide from which the water has been separated to the liquefaction module, and the stripping module may be connected to the circulation tank to supply the potassium carbonate aqueous solution and the condensate to the circulation tank.

[0044] In an embodiment of the present invention, the stripping module may include: a heater connected to the HDC module and receiving the potassium bicarbonate aqueous solution introduced through the HDC module; a heat exchanger located inside the heater such that at least a portion is exposed to the outside and heats and raises the potassium bicarbonate aqueous solution; and a regeneration unit coupled to the upper part of the heater and separating the potassium bicarbonate aqueous solution vaporized by the heat exchanger into water vapor, the carbon dioxide, and the liquefied potassium bicarbonate aqueous solution, and separating the carbon dioxide from the liquefied potassium bicarbonate aqueous solution.

[0045] In an embodiment of the present invention, the heater comprises: a receiving member; a partition member including an upper partition member formed on the upper part of the receiving member and a lower partition member formed on the lower part of the receiving member; an inlet inserted into the lower partition member such that at least a portion is exposed to one side of the lower partition member, into which the potassium bicarbonate aqueous solution introduced through the HDC module is introduced; and a plurality of heat transfer tubes connecting the upper partition member and the lower partition member to communicate with the inlet, wherein the plurality of heat transfer tubes can supply the potassium bicarbonate aqueous solution, which is heated and risen by the heat exchanger, to the regeneration unit.

[0046] In an embodiment of the present invention, the heat exchanger may be formed to be bent at least once in a zigzag shape and arranged adjacent to the plurality of heat transfer tubes.

[0047] In an embodiment of the present invention, the regeneration unit comprises: a regeneration chamber that accommodates the upper portion of the heater inside and accommodates the vaporized potassium bicarbonate aqueous solution; a scattering prevention plate located above the upper portion of the heater to prevent the vaporized potassium bicarbonate aqueous solution from scattering and to separate the vaporized potassium bicarbonate aqueous solution into water vapor, carbon dioxide, and liquefied potassium bicarbonate aqueous solution; and a perforated plate having a plurality of perforations formed therein and extending downward from the lower end of the scattering prevention plate to allow the carbon dioxide separated by the scattering prevention plate to pass through the side through the plurality of perforations and to drop the liquefied potassium bicarbonate aqueous solution, wherein the perforated plate can drop water in which the water vapor has been liquefied by the scattering prevention plate.

[0048] In an embodiment of the present invention, the scattering prevention plate may be formed in an upwardly convex arch shape.

[0049] In an embodiment of the present invention, the regeneration unit may further include: a droplet separator that is coupled to both inner sides of the regeneration chamber to be located above the scattering prevention plate and absorbs water contained in the carbon dioxide to pass the dried carbon dioxide through; and a discharge flange formed above the regeneration chamber and connected to the condenser to supply the dried carbon dioxide to the condenser.

[0050] In an embodiment of the present invention, the regeneration unit may further include: a collecting member formed on the inner lower edge of the regeneration chamber to surround the upper part of the heater and in contact with the inner lower surface of the regeneration chamber, collecting the liquefied potassium bicarbonate aqueous solution and the water vapor liquefied falling through the perforated plate, and discharging the condensed water condensed in the condenser, the liquefied potassium bicarbonate aqueous solution, and the water vapor liquefied into the circulation tank; and a vortex preventer installed inside the collecting member to block the mixing of the dried carbon dioxide and the water vapor, and to prevent vortexes caused by the condensed water condensed in the condenser, the liquefied potassium bicarbonate aqueous solution, and the water vapor liquefied into the condensed water.

[0051] In an embodiment of the present invention, the regeneration unit may further include a vacuum release device formed on the upper side of the regeneration chamber and releasing the vacuum formed inside the regeneration chamber through the control of the vacuum release valve, and a transparent window made of a transparent material formed on the side of the regeneration chamber so as to face the upper side of the heater.

[0052] In an embodiment of the present invention, the condenser comprises: a cover plate portion into which cooling water supplied from the outside flows; a condenser portion located inside the cover plate portion and condensing carbon dioxide and water vapor generated in the stripping module to produce condensate; and a baffle plate formed vertically inside the condenser portion to partition the condenser portion into left and right sides, allowing only the carbon dioxide to pass to the other side and preventing the water vapor from moving to the other side, and the condenser portion can supply the carbon dioxide and the condensate to the vacuum pump and the stripping module, respectively.

[0053] In an embodiment of the present invention, the cover plate portion may include: a cover plate; a water inlet portion formed on one side of the lower portion of the cover plate into which the cooling water supplied from the outside flows; and a water discharge portion formed on one side of the upper portion of the cover plate to discharge the cooling water that has cooled the condensation portion to the outside.

[0054] In an embodiment of the present invention, the condenser comprises: a condenser inserted into the center of the cover plate; a tube sheet coupled between the cover plate and the condenser to surround the side of the condenser; a gas inlet connected to the upper part of the condenser to introduce the carbon dioxide and water vapor supplied from the stripping module into the interior of the condenser; and a condensate discharge connected to the lower part of the condenser opposite to the gas inlet to discharge the condensate formed from the water vapor condensed in the condenser to the stripping module, wherein the gas inlet may be formed to have a larger diameter than the condensate discharge.

[0055] In an embodiment of the present invention, the condenser further comprises a carbon dioxide discharge unit connected to the upper other side of the condenser to discharge the carbon dioxide that has passed through the lower part of the baffle plate to the vacuum pump; and the baffle plate may be formed to extend downward from the upper end of the condenser and spaced apart from the lower end of the condenser by a predetermined distance.

[0056] In an embodiment of the present invention, the baffle plate may be positioned between the central axis of the gas inlet and the central axis of the carbon dioxide outlet.

[0057] In an embodiment of the present invention, the vacuum pump may be a water-sealed vacuum pump.

[0058] In an embodiment of the present invention, the vacuum pump may include: a casing filled with water seal inside; a suction part connected to one side of the upper portion of the casing to introduce carbon dioxide from the condenser into the interior of the casing; an impeller located inside the casing to rotate and separate the carbon dioxide and the water contained in the carbon dioxide; and an exhaust part connected to the other side of the upper portion of the casing to discharge the carbon dioxide from which the water has been separated to the liquefaction module.

[0059] In an embodiment of the present invention, the impeller may have an eccentric structure in which the center of the impeller is positioned above the center of the casing.

[0060] In an embodiment of the present invention, the regeneration module may include: a return pump installed on a pipe connecting the stripping module and the circulation tank to supply the liquefied potassium carbonate aqueous solution and the condensate in the stripping module to the circulation tank; a second filtration unit installed on a pipe connecting the stripping module and the circulation tank to be located on the other side of the return pump to filter the liquefied potassium carbonate aqueous solution and the condensate; a third valve unit installed on a pipe connecting the circulation tank, the HDC module, the stripping module, the condenser, the vacuum pump, and the liquefaction module to regulate the flow rate of the potassium bicarbonate aqueous solution, the liquefied potassium carbonate aqueous solution, the condensate, the water vapor, and the carbon dioxide flowing between the circulation tank, the HDC module, the stripping module, the condenser, the vacuum pump, and the liquefaction module; and a second sensor unit installed in the stripping module to measure the internal pressure and internal temperature of the stripping module.

[0061] In an embodiment of the present invention, the third valve unit comprises: a first solenoid valve unit installed on piping connecting the circulation tank, the HDC module, the stripping module, the condenser, the vacuum pump, and the liquefaction module to control the flow rate of the potassium bicarbonate aqueous solution, the liquefied potassium carbonate aqueous solution, the condensate, and the water vapor flowing between the circulation tank, the HDC module, the stripping module, the condenser, the vacuum pump, and the liquefaction module; and a check valve unit installed on piping connecting the stripping module and the circulation tank to control the flow rate of the liquefied potassium carbonate aqueous solution and the condensate, wherein the first solenoid valve unit comprises: a first solenoid valve installed on piping connecting the stripping module and the HDC module to control the flow rate of the potassium bicarbonate aqueous solution passing through the HDC module; and a second solenoid valve installed on piping connecting the condenser and the vacuum pump to control the flow rate of the carbon dioxide supplied from the condenser. It may include a third solenoid valve installed on the piping connecting the vacuum pump and the liquefaction module to control the flow rate of the water-separated carbon dioxide supplied from the vacuum pump; and a fourth solenoid valve installed on the piping connecting the stripping module and the circulation tank to control the flow rate of the liquefied potassium carbonate aqueous solution and the condensate supplied from the stripping module.

[0062] In an embodiment of the present invention, the second sensor unit may include a second pressure sensor unit installed on the side of the stripping module to measure the internal pressure of the stripping module; and a second temperature sensor unit installed on the side of the stripping module to measure the internal temperature of the stripping module.

[0063] In an embodiment of the present invention, the liquefaction module may include: a gas buffer tank connected to the regeneration module for storing the separated carbon dioxide supplied from the regeneration module and stabilizing the flow rate of the separated carbon dioxide; and a gas liquefaction module connected to the gas buffer tank for liquefying the stabilized carbon dioxide supplied from the gas buffer tank into the liquefied carbon dioxide.

[0064] In an embodiment of the present invention, the gas liquefaction module comprises: a compressor connected to the gas buffer tank to compress the separated carbon dioxide supplied from the gas buffer tank; a dehumidifier connected to the compressor to dehumidify the moisture contained in the compressed carbon dioxide supplied from the compressor; and a condenser connected to the dehumidifier to condense the dehumidified carbon dioxide supplied from the dehumidifier to change the phase into the liquefied carbon dioxide, and the dehumidifier can dehumidify the compressed carbon dioxide such that the moisture content contained in the compressed carbon dioxide is 10 ppm or less.

[0065] In an embodiment of the present invention, the liquefaction module may further include a storage tank connected to the gas liquefaction module for storing the liquefied carbon dioxide supplied from the gas liquefaction module.

[0066] In an embodiment of the present invention, the liquefaction module further comprises a second solenoid valve unit installed on a pipe connecting the regeneration module, the gas buffer tank, the gas liquefaction module, and the storage tank to control the flow rate of the separated carbon dioxide, the stabilized carbon dioxide, and the liquefied carbon dioxide flowing between the regeneration module, the gas buffer tank, the gas liquefaction module, and the storage tank, wherein the second solenoid valve unit may include a fifth solenoid valve installed on a pipe connecting the regeneration module and the gas buffer tank to control the flow rate of the separated carbon dioxide supplied from the regeneration module; and a sixth solenoid valve installed on a pipe connecting the gas buffer tank and the gas liquefaction module to control the flow rate of the stabilized carbon dioxide supplied from the gas buffer tank.

[0067] In an embodiment of the present invention, the third sensor unit may include: a third pressure sensor unit comprising a fifth pressure sensor installed on a pipe connecting the gas liquefaction module and the storage tank to measure the pressure of the liquefied carbon dioxide supplied from the gas liquefaction module, and a sixth pressure sensor located inside the gas buffer tank to measure the internal pressure of the gas buffer tank; and a third temperature sensor unit installed on a pipe connecting the gas liquefaction module and the storage tank to measure the temperature of the liquefied carbon dioxide supplied from the gas liquefaction module.

[0068] In an embodiment of the present invention, a control module may be further included that is electrically connected to the circulation module, the absorption module, the regeneration module, and the liquefaction module to control the operation of the circulation module, the absorption module, the regeneration module, and the liquefaction module. Effects of the invention

[0070] The effect of the present invention according to the above configuration is that by dissolving carbon dioxide contained in exhaust gas in an aqueous potassium carbonate solution in an absorption module, separating carbon dioxide from the aqueous potassium bicarbonate solution in which carbon dioxide is dissolved in an absorption module, and liquefying the separated carbon dioxide in a liquefaction module to store the liquefied carbon dioxide, it improves renewable energy efficiency while also offering advantages in terms of stability, corrosion resistance, reaction speed, and maintenance.

[0072] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description of the invention or the claims. Brief explanation of the drawing

[0074] FIG. 1 is a perspective view from one direction showing a carbon capture system using an aqueous potassium carbonate solution according to one embodiment of the present invention. FIG. 2 is a plan view from one direction showing a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 3 is a conceptual diagram showing a circulation module, an absorption module, a regeneration module, a liquefaction module, and a fluid flow equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 4 is a conceptual diagram showing the detailed components and fluid flow of a circulation module, an absorption module, a regeneration module, and a liquefaction module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 5 is a conceptual diagram showing the main components according to the fluid flow in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 6 is a conceptual diagram showing the HDC module of the circulation module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 7 is a conceptual diagram showing a pretreatment device equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 8 is a side view from one direction showing a gas injector of an absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 9 is a perspective view from one direction showing a highly dispersed reaction module of an absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 10 is a side view from one direction showing a highly dispersed reaction module of an absorption module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 11 is a side view from one direction showing that the highly dispersed reaction module of the absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to one embodiment of the present invention is composed of three modules. FIG. 12 is a side view from one direction showing an accelerated reaction module of an absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 13 is a conceptual diagram showing the fluid flow in the accelerated reaction module of the absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to one embodiment of the present invention. FIG. 14 is a conceptual diagram showing a stripping module of a regeneration module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 15 is a conceptual diagram showing a condenser of a regeneration module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. FIG. 16 is a conceptual diagram showing a vacuum pump of a regeneration module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention. Specific details for implementing the invention

[0075] The present invention will be described below with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0076] Throughout the specification, when it is stated that a part is "connected (connected, in contact, combined)" with another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly connected" with other members interposed between them. Furthermore, when it is stated that a part "includes" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather allows for the inclusion of additional components.

[0077] The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0078] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0080] FIG. 1 is a perspective view from one direction showing a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 2 is a plan view from one direction showing a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 3 is a conceptual diagram showing a circulation module, an absorption module, a regeneration module, a liquefaction module, and a fluid flow provided in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 4 is a conceptual diagram showing detailed components and fluid flow of a circulation module, an absorption module, a regeneration module, and a liquefaction module provided in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 5 is a conceptual diagram showing major components according to the fluid flow in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention.

[0081] Referring to FIGS. 1 to 5, a carbon capture system (1000) using a potassium carbonate aqueous solution includes a circulation module (100), an absorption module (200), a regeneration module (300), a liquefaction module (400), and a control module (500).

[0082] The circulation module (100) stores a potassium carbonate aqueous solution.

[0083] Here, the potassium carbonate aqueous solution is a potassium carbonate aqueous solution (KCS: K2CO3 aqueous solution) containing potassium carbonate (K2CO3).

[0084] In the present invention, potassium carbonate (K2CO3) is used as a replacement for the amine (MEA) used in the prior art, and the analysis comparing the characteristics of the amine (MEA) and potassium carbonate (K2CO3) is described in [Table 1].

[0085] Comparison items Amine (MEA) Potassium carbonate (K2CO3) note Chemical classification Organic compounds Inorganic Salt - reaction product Carbamate (stable bond) Bicarbonate (unstable bond) - renewable energy High (3.5~4.0 [GJ / ton-CO2]) Low (2.0~2.5 [GJ / ton-CO2]) Energy cost reduction (30~40%) (low-pressure evaporation technology applicable) causticity Very strong (severe pipe corrosion) Low (carbon steel can be used) Extended equipment lifespan and reduced maintenance costs Toxicity and odor Toxic gas, severe ammonia odor Non-toxic, odorless (food additive grade) Handler Safety and Resolution of Land-based Complaints Volatility (Loss) High (needs continuous replenishment due to evaporation) None (non-volatile in ionic state) Reduction in absorbent replenishment costs (OPEX) Oxygen resistance It decomposes when it comes into contact with oxygen (O2). Not oxidized (very stable) Reduction in exhaust gas pretreatment costs reaction rate speed Slowness (inherent physical property) Overcome with an accelerated response module

[0087] The circulation module (100) includes a transfer tank (110), a transfer pump (120), a circulation tank (130), a circulation pump (140), an HDC (Hydro-Dynamic Controller) module (150), a first filtration unit (160), a first valve unit (170), and a first sensor unit (180).

[0088] The transfer tank (110) stores a potassium carbonate aqueous solution.

[0089] The transfer pump (120) is connected to the transfer tank (110).

[0090] Specifically, the transfer pump (120) is positioned between the transfer tank (110) and the circulation tank (130) to connect the transfer tank (110) and the circulation tank (130), and sucks in the potassium carbonate aqueous solution inside the transfer tank (110) and supplies it to the circulation tank (130).

[0091] The circulation tank (130) is connected to the transfer pump (120) to supply the potassium carbonate aqueous solution flowing in from the transfer tank (110) by the transfer pump (120) to the absorption module (200), and is connected to the HDC module (150) to receive at least a portion of the potassium bicarbonate aqueous solution in which carbon dioxide is dissolved and flowing in from the absorption module (200).

[0092] Here, when carbon dioxide is dissolved in an aqueous potassium carbonate solution, it becomes an aqueous potassium bicarbonate (potassium bicarbonate) solution (KHCS: KHCO3 aqueous solution), and a detailed explanation regarding this will be provided later.

[0093] Hereinafter, an aqueous solution of potassium carbonate in which carbon dioxide is dissolved is referred to as an aqueous solution of potassium bicarbonate.

[0094] Specifically, the circulation tank (130) is positioned between the transfer pump (120) and the circulation pump (140) and is indirectly connected to the gas injector (210) provided in the absorption module (200). It receives the potassium carbonate aqueous solution supplied by the transfer pump (120) by connecting the transfer pump (120) and the circulation pump (140), and supplies the potassium carbonate aqueous solution to the gas injector (210) by the circulation pump (140).

[0095] Additionally, the circulation tank (130) is connected to the HDC module (150) and receives at least a portion of the potassium bicarbonate aqueous solution flowing into the HDC module (150) among the potassium bicarbonate aqueous solutions supplied from the absorption module (200) to the stripping module (310) provided in the regeneration module (300).

[0096] Additionally, the circulation tank (130) receives a potassium bicarbonate aqueous solution and condensate (C: condensate) supplied from a stripping module (310) equipped in a regeneration module (300).

[0097] The circulation pump (140) connects the circulation tank (130) and the absorption module (200) to supply the potassium carbonate aqueous solution flowing from the circulation tank (130) to the absorption module (200).

[0098] Specifically, the circulation pump (140) connects the circulation tank (130) and the gas injector (210) to supply the potassium bicarbonate aqueous solution in the circulation tank (130) to the gas injector (210).

[0099] FIG. 6 is a conceptual diagram showing the HDC module of the circulation module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0100] The HDC module (150) maintains the pressure and flow rate of the potassium bicarbonate aqueous solution, which is introduced from the absorption module (200) and supplied to the regeneration module (300), at a preset pressure and preset flow rate.

[0101] Referring to FIG. 6, the HDC module (150) includes a differential pressure control unit (151) and a flow rate maintenance unit (152).

[0102] The differential pressure control unit (151) is connected to the circulation tank (130), the acceleration reaction module (230) provided in the absorption module (200), and the stripping module (310) provided in the regeneration module (300) to control the pressure of the potassium bicarbonate aqueous solution so that the potassium bicarbonate aqueous solution flowing in from the absorption module (200) is supplied to the regeneration module (300) at a preset pressure.

[0103] Specifically, the differential pressure control unit (151) controls the pressure of the potassium bicarbonate aqueous solution passing through the interior of the differential pressure control unit (151) so that the third pressure increases when the second pressure is greater than the preset pressure.

[0104] Here, the second pressure is the pressure of the potassium bicarbonate aqueous solution supplied from the absorption module (200) to the differential pressure control unit (151) by the second pressure sensor (185b) described later, and the third pressure is the pressure of the potassium bicarbonate aqueous solution supplied from the differential pressure control unit (151) to the circulation tank (130) by the third pressure sensor (185c) described later.

[0105] Referring to FIG. 6, the differential pressure control unit (151) includes a pressure maintaining unit (151a) and a balance maintaining unit (151b).

[0106] The pressure maintaining unit (151a) is connected to the gas injector (210) and the flow rate maintaining unit (152) provided in the absorption module (200) and supplies the potassium bicarbonate aqueous solution flowing in from the absorption module (200) to the flow rate maintaining unit (152) at a preset pressure.

[0107] The balance maintenance unit (151b) is connected to the circulation tank (130), the pressure maintenance unit (151a), and the flow rate maintenance unit (152) to control the flow rate of the potassium bicarbonate aqueous solution so that the potassium bicarbonate aqueous solution introduced from the gas reaction module (230) provided in the absorption module (200) is supplied to the stripping module (310) provided in the regeneration module (300) at a preset flow rate.

[0108] In particular, the balance maintenance unit (151b) maintains the pressure acting in the pressure maintenance unit (151a) at a preset differential pressure by increasing the pressure of the potassium bicarbonate aqueous solution supplied from the gas reaction module (230) equipped in the absorption module (200) when the pressure of the potassium bicarbonate aqueous solution flowing in from the balance maintenance unit (151b) is higher than the preset pressure.

[0109] The flow rate maintenance unit (152) is connected to the differential pressure control unit (151) and controls the flow rate of the potassium bicarbonate aqueous solution passing through the differential pressure control unit (151) so that the potassium bicarbonate aqueous solution passing through the differential pressure control unit (151) is supplied to the regeneration module (300) at a preset flow rate.

[0110] Specifically, the flow rate maintaining unit (152) is connected to the pressure maintaining unit (151a) to control the flow rate of the aqueous solution passing through the pressure maintaining unit (151a) so that the remainder of the potassium bicarbonate aqueous solution passing through the pressure maintaining unit (151a) is supplied to the gas injector (310) at a preset flow rate.

[0111] In particular, the flow rate maintaining unit (152) controls the flow rate of the potassium bicarbonate aqueous solution so that the potassium bicarbonate aqueous solution supplied from the pressure maintaining unit (151a) provided in the differential pressure control unit (151) to the stripping module (310) provided in the regeneration module (300) is supplied at a preset flow rate.

[0112] The first filtration unit (160) filters foreign substances and potassium bicarbonate aqueous solution contained in the potassium carbonate aqueous solution moving between the circulation module (100) and the absorption module (200).

[0113] Referring to FIG. 4, the first filtration unit (160) includes a first strainer (161) and a second strainer (162).

[0114] The first strainer (161) is installed on the piping connecting the circulation tank (130) and the circulation pump (140) to remove foreign substances contained in the potassium carbonate aqueous solution supplied from the circulation tank (130) to the circulation pump (140).

[0115] The second strainer (162) is installed on a pipe connecting the gas reaction module (230) provided in the absorption module (200) and the pressure maintaining unit (151a) provided in the differential pressure control unit (151) to remove foreign substances contained in the potassium bicarbonate aqueous solution supplied from the absorption module (200) to the differential pressure control unit (151).

[0116] The first valve section (170) controls the flow rate of the potassium carbonate aqueous solution and the flow rate of the potassium bicarbonate aqueous solution moving inside the circulation module (130).

[0117] Referring to FIG. 4, the first valve section (170) includes a manual valve (171), a solenoid valve (172), a drain valve (173), and a manual valve (174).

[0118] A manual valve (171) is installed at the top of the transfer tank (110), and the said manual valve (171) is opened when supplying a potassium carbonate aqueous solution to the transfer tank (110).

[0119] A solenoid valve (172) is installed on the piping connecting the transfer tank (110) and the circulation tank (130) to control the flow rate of the potassium carbonate aqueous solution supplied from the transfer tank (110) to the circulation tank (130) by the transfer pump (120).

[0120] A drain valve (173) is installed at the bottom of the transfer tank (110), and the said drain valve (173) is opened when discharging the potassium carbonate aqueous solution inside the transfer tank (110).

[0121] A manual valve (174) is installed on the piping connecting the circulation tank (130) and the circulation pump (140) to control the flow rate of the potassium carbonate aqueous solution supplied from the circulation tank (130) to the circulation pump (140).

[0122] The above-mentioned manual valve (174) is closed for repair when a malfunction occurs in at least one of the circulation module (130), absorption module (200), regeneration module (300), and liquefaction module (400).

[0123] The first sensor unit (180) is installed in the circulation module (100) and measures the pH, water level, temperature, flow rate, and pressure of the potassium carbonate aqueous solution of the circulation module (100).

[0124] Referring to FIG. 4, the first sensor unit (180) includes a pH sensor unit (181), a water level detection sensor unit (182), a first temperature sensor unit (183), a flow rate sensor unit (184), and a first pressure sensor unit (185).

[0125] The pH sensor unit (181) is installed inside the transfer tank (110) and measures the pH of the potassium carbonate aqueous solution contained inside the transfer tank (110).

[0126] The water level detection sensor unit (182) includes a low water level detection sensor (182a) and a high water level detection sensor (182b).

[0127] A low water level detection sensor (182a) is installed on the lower inner side of the transfer tank (110) to measure the first water level of the potassium carbonate solution contained inside the transfer tank (110).

[0128] Here, the first water level is lower than the second water level.

[0129] A high-level detection sensor (182b) is installed on the upper side of the inside of the transfer tank (110) to measure the second level of the potassium carbonate solution contained inside the transfer tank.

[0130] The first temperature sensor unit (183) measures the temperature of the transfer tank (110) and the temperature between the circulation pump (140) and the absorption module (200).

[0131] Referring to FIG. 4, the first temperature sensor unit (183) includes a first temperature sensor (183a) and a second temperature sensor (183b).

[0132] The first temperature sensor (183a) is installed inside the transfer tank (110) to measure the internal temperature of the transfer tank (110).

[0133] A second temperature sensor (183b) is installed on the piping connecting the circulation pump (140) and the gas injector (210) provided in the absorption module (200) to measure the temperature of the potassium carbonate aqueous solution supplied from the circulation pump (140) to the gas injector (210) provided in the absorption module (200).

[0134] The flow sensor unit (184) measures the flow rate between the circulation pump (140) and the absorption module (200), the flow rate between the absorption module (200) and the differential pressure control unit (151), the flow rate between the circulation tank (130) and the differential pressure control unit (151), and the flow rate between the differential pressure control unit (151) and the regeneration module (300).

[0135] The flow sensor unit (184) includes a first flow sensor (184a), a second flow sensor (184b), a third flow sensor (184c), and a fourth flow sensor (184d).

[0136] A first flow sensor (184a) is installed on a pipe connecting a circulation pump (140) and a gas injector (210) provided in an absorption module (200) to measure a first flow rate of a potassium carbonate aqueous solution supplied from the circulation pump (140) to the gas injector (210) provided in the absorption module (200).

[0137] The second flow sensor (184b) is installed on a pipe connecting the acceleration reaction module (230) provided in the absorption module (200) and the pressure maintaining unit (151a) provided in the differential pressure control unit (151), and measures the second flow rate of the potassium bicarbonate aqueous solution supplied from the acceleration reaction module (230) provided in the absorption module (200) to the pressure maintaining unit (151a) provided in the differential pressure control unit (151).

[0138] A third flow sensor (184c) is installed on a pipe connecting the circulation tank (130) and the balance maintenance unit (151b) provided in the differential pressure control unit (151), and measures the third flow rate of the potassium bicarbonate aqueous solution supplied from the balance maintenance unit (151b) provided in the differential pressure control unit (151) to the circulation tank (130).

[0139] The fourth flow sensor (184d) is installed on a pipe connecting the flow rate maintenance unit (152) and the stripping module (310) provided in the regeneration module (300) to measure the fourth flow rate of the potassium bicarbonate aqueous solution supplied from the flow rate maintenance unit (152) to the stripping module (310) provided in the regeneration module (300).

[0140] The first pressure sensor unit (185) measures the pressure between the circulation pump (140) and the absorption module (200), the pressure between the absorption module (200) and the differential pressure control unit (151), the pressure between the circulation tank (130) and the differential pressure control unit (151), and the pressure between the differential pressure control unit (151) and the regeneration module (300).

[0141] Referring to FIG. 4, the first pressure sensor unit (185) includes a first pressure sensor (185a), a second pressure sensor (185b), a third pressure sensor (185c), and a fourth pressure sensor (185d).

[0142] A first pressure sensor (185a) is installed on a pipe connecting a circulation pump (140) and a gas injector (210) provided in an absorption module (200) to measure a first pressure of a potassium carbonate aqueous solution supplied from the circulation pump (140) to the gas injector (210) provided in the absorption module (200).

[0143] The second pressure sensor (185b) is installed on a pipe connecting the gas injector (210) provided in the absorption module (200) and the pressure maintaining unit (151a) provided in the differential pressure control unit (151), and measures the second pressure of the potassium bicarbonate aqueous solution supplied from the gas injector (210) provided in the absorption module (200) to the pressure maintaining unit (151a) provided in the differential pressure control unit (151).

[0144] A third pressure sensor (185c) is installed on a pipe connecting the circulation tank (130) and the balance maintenance unit (151b) provided in the differential pressure control unit (151), and measures the third pressure of the potassium bicarbonate aqueous solution supplied from the balance maintenance unit (151b) provided in the differential pressure control unit (151) to the circulation tank (130).

[0145] The fourth pressure sensor (185d) is installed on the pipe connecting the flow rate maintenance unit (152) and the stripping module (310) provided in the regeneration module (300) to measure the fourth pressure of the potassium bicarbonate aqueous solution supplied from the flow rate maintenance unit (152) to the stripping module (310) provided in the regeneration module (300).

[0146] FIG. 7 is a conceptual diagram showing a pretreatment device equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0147] Additionally, the present invention further includes a pretreatment device (201) connected to an absorption module (200) that pretreats exhaust gas (G) and supplies it to the absorption module (200).

[0148] The pretreatment device (201) includes a main body (202), a nozzle part (203), a gas-liquid separation part (204), and a filter part (205).

[0149] The main body (202) includes a quenching main body (202a) and a scrubber main body (202b).

[0150] The quenching body (202a) receives exhaust gas (G) supplied from the outside.

[0151] The quenching body (202a) includes a first quenching body (202aa), a second quenching body (202ab), a third quenching body (202ac), and a fourth quenching body (202ad).

[0152] The first quenching body (202aa) receives exhaust gas (G) supplied from the outside.

[0153] The second quenching body (202ab) is coupled to the lower part of the first quenching body (202aa) to receive exhaust gas (G) falling from the first quenching body (202aa).

[0154] The second quenching body (202ab) is formed so that its width narrows from the top and then widens again.

[0155] The third quenching body (202ac) is coupled to the lower part of the second quenching body (202ab) to receive exhaust gas (G) falling from the second quenching body (202ab).

[0156] The fourth quenching body (202ad) is coupled to the lower part of the third quenching body (202ac) to receive exhaust gas (G) falling from the third quenching body (202ac).

[0157] The fourth quenching body (202ad) is formed at an angle so as to be coupled to the lower part of the scrubber body (202b).

[0158] The scrubber body (202b) is connected to the quenching body (202a).

[0159] The scrubber body (202b) includes a first scrubber body (202ba), a second scrubber body (202bb), a third scrubber body (202bc), a fourth scrubber body (202bd), and a fifth scrubber body (202be).

[0160] The first scrubber body (202ba) has a side connected to the other side of the fourth quenching body (202ad) to receive exhaust gas (G) flowing in from the fourth quenching body (202ad).

[0161] The second scrubber body (202bb) is coupled to the upper part of the first scrubber body (202ba) and receives exhaust gas (G) flowing in from the first scrubber body (202ba).

[0162] The second scrubber body (202bb) is formed so that its width increases from the bottom to the top.

[0163] The third scrubber body (202bc) is coupled to the upper part of the second scrubber body (202bb) and receives exhaust gas (G) flowing in from the second scrubber body (202bb).

[0164] The fourth scrubber body (202bd) is coupled to the upper part of the third scrubber body (202bc) and receives exhaust gas (G) flowing in from the third scrubber body (202bc).

[0165] The fifth scrubber body (202be) is coupled to the upper part of the fourth scrubber body (202bd) and receives exhaust gas (G) flowing in from the fourth scrubber body (202bd).

[0166] The fifth scrubber body (202be) is formed so that its width narrows from the bottom to the top.

[0167] The nozzle section (203) includes an input nozzle section (203a) and a clean nozzle section (203b).

[0168] The input nozzle part (203a) is inserted into at least a portion of the quenching body (202a) and the scrubber body (202b) to clean fine dust and impurities contained in the exhaust gas (G) supplied from the outside.

[0169] The injection nozzle section (203a) includes a first injection nozzle (203aa), a second injection nozzle (203ab), a third injection nozzle (203ac), a fourth injection nozzle (203ad), and a fifth injection nozzle (203ae).

[0170] At least a portion of the first injection nozzle (203aa) is inserted into the interior of the first quenching body (202aa).

[0171] Specifically, the first injection nozzle (203aa) is positioned on the lower inner side of the first quenching body (202aa) so as to face the direction of fall of the falling exhaust gas (G) and sprays mist upward.

[0172] The first injection nozzle (203aa) described above prevents fine dust and impurities from being present inside the first quenching body (202aa) as the mist sprayed upward falls together with the fine dust and impurities contained in the exhaust gas (G) falling from the first quenching body (202aa).

[0173] At least a portion of the second injection nozzle (203ab) is inserted into the interior of the second quenching body (202ab).

[0174] Specifically, the second injection nozzle (203ab) is positioned on the lower side inside the second quenching body (202ab) so as to face the direction of fall of the falling exhaust gas (G) and sprays mist upward.

[0175] The above-mentioned second injection nozzle (203ab) prevents fine dust and impurities from being present inside the second quenching body (202ab) as the mist sprayed upward falls together with the fine dust and impurities contained in the exhaust gas (G) falling from the second quenching body (202ab).

[0176] At least a portion of the third injection nozzle (203ac) is inserted into the interior of the second scrubber body (202bb).

[0177] Specifically, the third injection nozzle (203ac) is positioned on the upper side inside the second scrubber body (202bb) so as to face the upward direction of the rising exhaust gas (G) and sprays mist downward.

[0178] The above-mentioned third injection nozzle (203ac) prevents fine dust and impurities from existing inside the second scrubber body (202bb) as the mist sprayed downward falls together with the fine dust and impurities contained in the exhaust gas (G) rising from the second scrubber body (202bb).

[0179] At least a portion of the fourth injection nozzle (203ad) is inserted into the interior of the third scrubber body (202bc).

[0180] Specifically, the fourth injection nozzle (203ad) is positioned on the upper side inside the third scrubber body (202bc) so as to face the upward direction of the rising exhaust gas (G) and sprays mist downward.

[0181] The above-mentioned fourth injection nozzle (203ad) prevents fine dust and impurities from existing inside the third scrubber body (202bc) as the mist sprayed downward falls together with the fine dust and impurities contained in the exhaust gas (G) rising from the third scrubber body (202bc).

[0182] At least a portion of the fifth injection nozzle (203ae) is inserted into the interior of the fourth scrubber body (202bd).

[0183] Specifically, the fifth injection nozzle (203ae) is positioned on the upper side inside the fourth scrubber body (202bd) so as to face the upward direction of the rising exhaust gas (G) and sprays mist downward.

[0184] The above-mentioned fifth injection nozzle (203ae) prevents fine dust and impurities from existing inside the fourth scrubber body (202bd) as the mist sprayed downward falls together with the fine dust and impurities contained in the exhaust gas (G) rising from the fourth scrubber body (202bd).

[0185] The clean nozzle section (203b) includes a first clean nozzle (203ba), a second clean nozzle (203bb), and a third clean nozzle (203bc).

[0186] At least a portion of the first clean nozzle (203ba) is inserted into the interior of the third scrubber body (202bc).

[0187] Specifically, the first clean nozzle (203ba) is positioned below the fourth injection nozzle (203ad) so as to face the upward direction of the rising exhaust gas (G), and sprays mist toward the rising exhaust gas (G) to clean the exhaust gas (G).

[0188] At least a portion of the second clean nozzle (203bb) is inserted into the interior of the fourth scrubber body (202bd).

[0189] Specifically, the second clean nozzle (203bb) is positioned below the fifth injection nozzle (203ae) so as to face the rising direction of the rising exhaust gas (G), and sprays mist toward the rising exhaust gas (G) to clean the exhaust gas (G).

[0190] At least a portion of the third clean nozzle (203bc) is inserted into the interior of the fifth scrubber body (202be).

[0191] Specifically, the third clean nozzle (203bc) is positioned to face the rising direction of the rising exhaust gas (G) and sprays mist toward the rising exhaust gas (G) to clean the exhaust gas (G).

[0192] The gas-liquid separation unit (204) is coupled to the inner upper surface of the first scrubber body (202ba) to separate the gas and liquid of the exhaust gas (G) flowing in from the fourth quenching body (202ad), and accordingly, only the exhaust gas (G) from which moisture has been removed rises and flows into the second scrubber body (202bb).

[0193] The filter section (205) includes a first filter (205a), a second filter (205b), and a third filter (205c).

[0194] The first filter (205a) is positioned on the lower inner side of the third scrubber body (202bc) to filter fine dust and impurities contained in the exhaust gas (G) that has passed through the third input nozzle (203ac).

[0195] The second filter (205b) is positioned on the lower inner side of the fourth scrubber body (202bd) and filters fine dust and impurities contained in the exhaust gas (G) that has passed through the fourth input nozzle (203ad).

[0196] The third filter (205c) is positioned on the lower inner side of the fifth scrubber body (202be) to filter fine dust and impurities contained in the exhaust gas (G) that has passed through the fifth input nozzle (203ae).

[0197] The absorption module (200) is connected to the circulation module (100) to mix the potassium carbonate aqueous solution flowing in from the circulation module (100) with the exhaust gas (G) flowing in from the outside, and then dissolves the carbon dioxide contained in the exhaust gas (G) into the potassium carbonate aqueous solution (KCS), and the related [Chemical Formula 1] is as follows.

[0198] [Chemical Formula 1]

[0199]

[0200] (Here, K2CO3=potassium carbonate, CO2=carbon dioxide, H2O=water, KHCO3=potassium bicarbonate)

[0202] Referring to FIGS. 1 to 5, the absorption module (200) includes a gas injector (210), a high-dispersion reaction module (220), an acceleration reaction module (230), and a second valve section (240).

[0203] FIG. 8 is a side view from one direction showing a gas injector of an absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0204] The gas injector (210) is connected to the circulation module (100) and mixes the potassium carbonate aqueous solution supplied from the circulation module (100) with the exhaust gas (G) supplied from the outside.

[0205] Referring to FIG. 8, the gas injector (210) may be a 'T'-shaped pipe and includes a fluid inlet (211) and a gas inlet (212).

[0206] The fluid inlet (211) is connected to the circulation module (100) so that a potassium carbonate aqueous solution supplied from the circulation module (100) is introduced.

[0207] The fluid inlet section (211) includes a mixing pipe (211a) and a flow pipe (211b).

[0208] Referring to FIG. 8, the mixing pipe (211a) is connected to a circulation pump (140) provided in the circulation module (100) so that a potassium carbonate aqueous solution introduced from the circulation pump (140) provided in the circulation module (110) and exhaust gas (G) introduced from the gas inlet (212) are mixed.

[0209] The flow pipe (211b) is connected to the other side of the mixing pipe (211a) so as to be in communication with the mixing pipe (211a), and the potassium carbonate aqueous solution and exhaust gas (G) mixed in the mixing pipe (211a) flow through it.

[0210] The gas inlet (212) is connected to the upper and lower parts of the fluid inlet (211) so that exhaust gas (G) is introduced.

[0211] The gas inlet section (212) includes a first gas inlet pipe (212a) and a second gas inlet pipe (212b).

[0212] The first gas inlet pipe (212a) is connected to the upper part of the mixing pipe (211a) so that exhaust gas (G) is introduced.

[0213] The second gas inlet pipe (212b) is connected to the lower part of the mixing pipe (211a) so as to face the first gas inlet pipe (212a) with respect to the mixing pipe (211a), and exhaust gas (G) is introduced.

[0214] FIG. 9 is a perspective view from one direction showing a highly dispersed reaction module of an absorption module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 10 is a side view from one direction showing a highly dispersed reaction module of an absorption module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention. FIG. 11 is a side view from one direction showing that the highly dispersed reaction module of an absorption module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention is composed of three modules.

[0215] Referring to FIGS. 9 to 11, the highly dispersed reaction module (220) is connected to a gas injector (210) to generate microbubbles (B) in the potassium carbonate aqueous solution and exhaust gas (G) introduced from the gas injector (210) to dissolve a portion of the carbon dioxide (CO2) contained in the exhaust gas (G) into the potassium carbonate aqueous solution, and is composed of at least one.

[0216] Referring to FIG. 11, at least one highly dispersed reaction module (220) is composed of three and connected in succession.

[0217] Referring to FIGS. 10 and 11, the highly dispersed reaction module (220) includes an inlet flange section (221), a bubble generating section (222), and an outlet flange section (223).

[0218] The inlet flange (221) is connected to the gas injector (210) so that the potassium carbonate aqueous solution (KCS) and exhaust gas (G) mixed in the gas injector (210) are introduced.

[0219] The bubble generating unit (222) is connected to the other side of the inlet flange unit (221) and generates microbubbles (B) in the mixed potassium carbonate aqueous solution (KCS) and exhaust gas (G) flowing in from the inlet flange unit (221), thereby dissolving a portion of the carbon dioxide (CO2) contained in the exhaust gas (G) into the potassium carbonate aqueous solution (KCS).

[0220] The above-mentioned bubble generating unit generates microbubbles (B) to increase the contact area between the potassium carbonate aqueous solution (KCS) and the exhaust gas (B), thereby increasing the solubility of carbon dioxide (CO2) dissolved in the potassium carbonate aqueous solution (KCS).

[0221] Referring to FIG. 11, the bubble generating unit (222) includes a bubble plate (222a) and an orifice tube (222b).

[0222] The bubble plate (222a) is connected to the other end of the inlet flange (221) and one end of the outlet flange (223).

[0223] Specifically, the bubble plate (222a) is formed to have an inner diameter equal to the inner diameter of the inlet flange portion (221) and the inner diameter of the outlet flange portion (223).

[0224] The orifice tube (222b) is formed inside the bubble plate (222a) and consists of at least one.

[0225] Specifically, at least one orifice tube (222b) is placed inside the bubble plate (222a).

[0226] For example, at least one orifice tube (222b) may be arranged radially with respect to the central axis of the bubble plate (222a).

[0227] The above-mentioned orifice tube (222b) is formed such that its width narrows from one side to the other, thereby generating microbubbles (B) in the mixed potassium carbonate aqueous solution (KCS) and exhaust gas (G).

[0228] The outflow flange portion (223) is connected to the other side of the bubble generating portion (222), and the mixed potassium carbonate aqueous solution (KCS) and exhaust gas (G) flowing in from the bubble generating portion (222) are reacted by microbubbles (B), so that the carbon dioxide (CO2) contained in the exhaust gas (G) is dissolved.

[0229] The above-mentioned outflow flange (223) is connected to the acceleration reaction module (230) to supply a potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved to the acceleration reaction module (230).

[0230] FIG. 12 is a side view from one direction showing an accelerated reaction module of an absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0231] Referring to FIG. 12, the acceleration reaction module (230) is connected to the high-dispersion reaction module (220) to form an artificial high-gravity field, and using the formed artificial high-gravity field, the potassium bicarbonate aqueous solution (KHCS) in which part of the carbon dioxide (CO2) is dissolved in the high-dispersion reaction module (220) and the remainder of the carbon dioxide (CO2) in the exhaust gas (G) is dissolved in the potassium bicarbonate aqueous solution (KHCS) in which part of the carbon dioxide (CO2) is dissolved.

[0232] FIG. 13 is a conceptual diagram showing the fluid flow in the accelerated reaction module of the absorption module equipped in a carbon capture system using a potassium carbonate aqueous solution according to one embodiment of the present invention.

[0233] Referring to FIG. 13, the acceleration reaction module (230) includes a reaction section (231), an input / output section (232), and an acceleration reaction section (233).

[0234] The reaction section (231) has an inlet pipe (232a) and an outlet pipe (232b) inserted therein to receive a potassium carbonate aqueous solution (KGCS) in which a portion of carbon dioxide (CO2) is dissolved and exhaust gas (G) introduced through the inlet pipe (232a).

[0235] Referring to FIG. 12, the reaction section (231) includes a reactor (231a), a gas discharge section (231b), and a drain (231c).

[0236] The reactor (231a) receives a potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) introduced from the inlet pipe (232a) is dissolved, and exhaust gas (G).

[0237] Additionally, as shown in FIG. 13, an internal reactor (231aa) is formed in the internal central part of the reactor (231a) to divide the internal space of the reactor (231a) into a first internal space and a second internal space, and to receive an acceleration reaction unit (233) in communication with an inlet pipe (232a).

[0238] Referring to FIG. 13, the internal reactor (231aa) is positioned in the internal central part of the reactor (231a) to divide the internal space of the reactor (231a) into a first internal space and a second internal space.

[0239] Additionally, the internal reactor (231aa) is connected to the inlet pipe (232a) to receive a potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) introduced into the first internal space and exhaust gas (G).

[0240] The above-mentioned internal reactor (231aa) accommodates an acceleration reaction unit (233).

[0241] The gas discharge section (231b) is connected to the upper part of the reactor (231a) to discharge nitrogen (N2) and oxygen (O2) contained in the exhaust gas (G).

[0242] The drain (231c) is connected to the bottom of the reactor (231a).

[0243] The inlet / outlet section (232) includes an inlet pipe (232a) and an outlet pipe (232b).

[0244] The inlet pipe (232a) is connected to the high-dispersion reaction module (220), and the potassium bicarbonate aqueous solution (KHCS) in which a portion of carbon dioxide (CO2) is dissolved and the exhaust gas (G) are introduced from the high-dispersion reaction module (220).

[0245] The outlet pipe (232b) is connected to the HDC module (150) to discharge the potassium bicarbonate aqueous solution into the HDC module (150).

[0246] The acceleration reaction unit (233) is located inside the reaction unit (231) to communicate with the other side of the inlet pipe (232a) to form an artificial high gravity field, and using the artificial high gravity field, the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) is dissolved in the high dispersion reaction module (220) and the remainder of the carbon dioxide (CO2) in the exhaust gas (G) is dissolved in the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) is dissolved.

[0247] The above-described acceleration reaction unit (233) increases the mass transfer rate and reaction rate of the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) is dissolved and the exhaust gas (G) by using an artificial high gravity field, thereby increasing the solubility of the remainder of the carbon dioxide (CO2) dissolved in the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) is dissolved.

[0248] The acceleration reaction section (233) includes an acceleration reactor (233a) and a circulation pipe (233b).

[0249] The accelerator reactor (233a) is located inside the inner reactor (231aa) to communicate with the other side of the inlet pipe (232a) to form an artificial high gravity field, and by using centrifugal force through the artificial high gravity field, the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) introduced into the interior is dissolved and the remainder of the carbon dioxide (CO2) in the exhaust gas (G) is pushed to the inner surface of the accelerator reactor (233a), thereby increasing the solubility of the remainder of the carbon dioxide (CO2) dissolved in the potassium bicarbonate aqueous solution (KHCS) in which a portion of the carbon dioxide (CO2) is dissolved.

[0250] The circulation pipe (233b) is positioned so that its central and lower portions are spaced upward from the inner lower surface of the acceleration reactor (233a) by a predetermined distance, and its upper portion is positioned so that it is positioned inside the acceleration reactor (233a) and the reactor (231a).

[0251] The above-mentioned circulation pipe (233b) discharges the potassium bicarbonate aqueous solution (KHCS) in which the remainder of the carbon dioxide (CO2) is dissolved into the first internal space.

[0252] Accordingly, the potassium bicarbonate aqueous solution (KHCS) in which the remainder of the carbon dioxide (CO2) is dissolved is transferred to the HDC module (150) through the outlet pipe (232b).

[0253] The second valve section (240) is installed in the gas injector (210) and the acceleration reaction module (230) to control the flow rate of exhaust gas (G) supplied to the gas injector (210) and the flow rate of exhaust gas (G) reacted in the acceleration reaction module (230).

[0254] Referring to FIGS. 3 and 4, the second valve section (240) includes a first flow valve (241) and a second flow valve (242).

[0255] The first flow valve (241) is installed at the top of the gas injector (210) and controls the flow rate of the exhaust gas (G) supplied to the gas injector (210).

[0256] The second flow valve (242) is installed in the acceleration reaction module (230) to control the flow rate of the exhaust gas (G) reacted in the acceleration reaction module (230).

[0257] FIG. 14 is a conceptual diagram showing a stripping module of a regeneration module equipped in a carbon capture system using an aqueous potassium carbonate solution according to an embodiment of the present invention.

[0258] The regeneration module (300) is connected to the circulation module (100) to separate carbon dioxide (CO2) from the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) introduced from the circulation module (100) is dissolved, and the related [Chemical Formula 2] is as follows.

[0259] [Chemical Formula 2]

[0260]

[0261] (Here, K2CO3=potassium carbonate, CO2=carbon dioxide, H2O=water, KHCO3=potassium bicarbonate)

[0263] Referring to FIG. 4, the regeneration module (300) includes a stripping module (310), a condenser (320), a vacuum pump (330), a return pump (340), a second filter unit (350), a third valve unit (360), and a second sensor unit (370).

[0264] The stripping module (310) is connected to the HDC module (150) to separate carbon dioxide (CO2) from the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and introduced through the HDC module (150), and to produce a liquefied potassium bicarbonate aqueous solution and steam (S: Steam) from the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved.

[0265] Additionally, the stripping module (310) is connected to the circulation tank (130) to supply potassium carbonate aqueous solution (KCS) and condensate (C) to the circulation tank (130).

[0266] The stripping module (310) includes a heater (311), a heat exchanger (312), and a regeneration unit (313).

[0267] The heater (311) is connected to the HDC module (150) and receives the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and introduced through the HDC module (150).

[0268] The heater (311) includes a receiving member (311a), a partition member (311b), an inlet (311c), and a heat transfer tube (311d).

[0269] The receiving member (311a) has a hollow cylindrical shape.

[0270] The bulkhead member (311b) includes an upper bulkhead member (311ba) and a lower bulkhead member (311bb).

[0271] The upper bulkhead member (311ba) (Boiling well) is formed on the upper part of the receiving member (311a).

[0272] The lower bulkhead member (311bb) is formed at the lower part of the receiving member (311a).

[0273] The inlet (311c) is inserted into the lower partition member (311bb) such that at least a portion is exposed to one side of the lower partition member (311bb), and a potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and introduced through the HDC module (150) is introduced.

[0274] The above-mentioned inlet (311c) is connected to a plurality of heat transfer tubes (311d) to supply a potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved to the plurality of heat transfer tubes (311d).

[0275] The heat transfer tube (311d) is connected to the upper partition member (311ba) and the lower partition member (311bb) to communicate with the inlet (311c), and is composed of multiple tubes.

[0276] Specifically, the heat transfer tube (311d) has a tube shape that extends in the vertical direction.

[0277] In addition, a plurality of heat transfer tubes (311d) are arranged so as to be spaced apart from each other by a predetermined distance.

[0278] The above-mentioned plurality of heat transfer tubes (311d) supply a potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and rises, heated by the heat exchanger (312), to the regeneration unit (313).

[0279] The heat exchanger (312) is located inside the heater (311) such that at least a portion of it is exposed to the outside, and heats and raises the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved.

[0280] The above-described heat exchanger (312) is formed to be bent at least once in a zigzag shape and is positioned adjacent to a plurality of heat transfer tubes (311d), thereby transferring heat to a potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and flows inside the plurality of heat transfer tubes (311d), and accordingly, the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved and whose temperature has risen rises along the plurality of heat transfer tubes (311d) and then vaporizes at the upper partition member (311ba).

[0281] The regeneration unit (313) is coupled to the upper part of the heater (311) and separates the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) vaporized by the heat exchange unit (312) is dissolved into water vapor (S), carbon dioxide (CO2), and potassium bicarbonate aqueous solution (KHCS) in which liquefied carbon dioxide (CO2) is dissolved, and separates carbon dioxide (CO2) from the potassium bicarbonate aqueous solution (KHCS) in which liquefied carbon dioxide (CO2) is dissolved.

[0282] Referring to FIG. 14, the regeneration unit (313) includes a regeneration chamber (313a), a discharge flange (313b), a droplet separator (313c), a scattering prevention plate (313d), a perforated plate (313e), a collecting member (313f), a vacuum releaser (313g), a transparent window (313h), and a vortex preventer (313i).

[0283] The regeneration chamber (313a) accommodates the upper portion of the heater (311) inside and contains a potassium bicarbonate aqueous solution (KHCS) in which vaporized carbon dioxide (CO2) is dissolved.

[0284] The regeneration chamber (313a) for this purpose can be formed in a cylindrical shape having a larger diameter than the receiving member (311a).

[0285] The discharge flange (313b) is formed on the upper part of the regeneration chamber (313a) and is connected to a condenser (320) to supply dried carbon dioxide (CO2) to the condenser (320).

[0286] A droplet separator (313c) is coupled to both inner sides of the regeneration chamber (313a) so as to be positioned above the scattering prevention plate (313d), and absorbs water contained in carbon dioxide (CO2) to pass the dried carbon dioxide (CO2).

[0287] The scattering prevention plate (313d) is positioned above the upper part of the heater (311) to prevent the potassium bicarbonate aqueous solution (KHCS) in which vaporized carbon dioxide (CO2) is dissolved from scattering, and separates the potassium bicarbonate aqueous solution (KHCS) in which vaporized carbon dioxide (CO2) is dissolved into water vapor (S), carbon dioxide (CO2), and liquefied potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved.

[0288] The scattering prevention plate (313d) for this purpose is formed in an upwardly convex arch shape.

[0289] The perforated plate (313e) has a plurality of perforations formed therein and extends downward from the bottom of the scattering prevention plate (313d), allowing carbon dioxide (CO2) separated by gas-liquid by the scattering prevention plate (313d) to pass through the side through the plurality of perforations, and dropping a potassium bicarbonate aqueous solution (KHCS) in which the liquefied carbon dioxide (CO2) is dissolved.

[0290] Additionally, the perforated plate (313e) drops water in which water vapor (S) has been liquefied by the scattering prevention plate (313d).

[0291] The collecting member (313f) is formed on the inner lower edge of the regeneration chamber (313a) in contact with the inner lower surface of the regeneration chamber (313a) to surround the upper part of the heater (311), and collects the potassium bicarbonate aqueous solution (KHCS) in which liquefied carbon dioxide (CO2) is dissolved and the water in which steam (S) is liquefied falling through the perforated plate (313e), and discharges the condensed water (C) condensed in the condenser (320), the potassium bicarbonate aqueous solution (KHCS) in which liquefied carbon dioxide (CO2) is dissolved and the water in which steam (S) is liquefied, to the circulation tank (130).

[0292] The vacuum releaser (313g) includes a vacuum release valve (not shown) and is formed on the upper part of the regeneration chamber (313a) to release the vacuum formed inside the regeneration chamber (313a) by controlling the vacuum release valve.

[0293] A transparent window (313h) is formed on the side of the regeneration chamber (313a) so as to face the upper part of the heater (311).

[0294] In particular, the transparent window (313h) is made of a transparent material so that the inside of the regeneration chamber (313a) can be observed from the outside.

[0295] The vortex preventer (313i) is installed inside the collection member (313f) to block the mixing of dried carbon dioxide (CO2) and water vapor (S), and prevents vortex caused by condensed water (C) condensed in the condenser (320), potassium bicarbonate aqueous solution (KHCS) in which liquefied carbon dioxide (CO2) is dissolved, and water vapor (S) in which liquefied water is liquefied.

[0296] A vortex preventer (313i) for this purpose can be placed in the area where condensed water (C) condensed in the condenser (320) flows in, and where liquefied carbon dioxide (CO2) dissolved in potassium bicarbonate aqueous solution (KHCS) and water vapor (S) liquefied water is discharged to the circulation tank (130).

[0297] For example, the vortex preventer (313i) may be a cross-shaped baffle.

[0298] FIG. 15 is a conceptual diagram showing a condenser of a regeneration module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0299] The condenser (320) is connected to the stripping module (310) and supplies the condensate (C) generated by condensing the water vapor (S) among the carbon dioxide (CO2) and water vapor (S) flowing in from the stripping module (310) to the stripping module (310).

[0300] Referring to FIG. 15, the condenser (320) includes a cover plate section (321), a condenser section (322), and a baffle plate (323).

[0301] Cooling water (W) supplied from the outside flows into the cover plate portion (321).

[0302] The cover plate portion (321) includes a cover plate (321a), a water discharge portion (321b), and a water inlet portion (321c).

[0303] The cover plate (321a) has a cylindrical shape.

[0304] The water discharge section (321b) is formed on one side of the upper part of the cover plate (321a) and discharges the cooling water (W) that has cooled the condensation section (322) to the outside.

[0305] The water inlet (321c) is formed on one side of the lower part of the cover plate (321a) and allows cooling water (W) supplied from the outside to flow in.

[0306] The condensation unit (322) is located inside the cover plate (321a) and condenses carbon dioxide (CO2) and water vapor (S) generated in the stripping module (310) to produce condensate (C).

[0307] The above-mentioned condensation unit (322) supplies carbon dioxide (CO2) and condensate (C) to the vacuum pump (330) and stripping module (310), respectively.

[0308] The condensation section (322) includes a condenser (322a), a tube sheet (322b), a gas inlet section (322c), a condensate discharge section (322d), and a carbon dioxide discharge section (322e).

[0309] The condenser (322a) is inserted into the center of the cover plate (321a).

[0310] Specifically, the condenser (322a) has a structure that allows cooling water (W) flowing into the interior of the cover plate (321a) to flow.

[0311] The tube sheet (322b) is joined between the cover plate (321a) and the condenser (322a) to surround the side of the condenser (322a).

[0312] The gas inlet (322c) is connected to the upper part of the condenser (322a) to introduce carbon dioxide (CO2) and water vapor (S) supplied from the stripping module (310) into the interior of the condenser (322a).

[0313] In particular, the gas inlet (322c) is formed to have a larger diameter than the condensate discharge (322d), taking into account that the volume changes depending on whether it is before or after condensation.

[0314] The condensate discharge section (322d) is connected to the lower part of the condenser (322a) so as to face the gas inlet section (322c) and discharges the condensate (C), in which water vapor (S) is condensed in the condenser (322a), to the stripping module (310).

[0315] The carbon dioxide discharge section (322e) is connected to the upper side of the condenser (322a) and discharges carbon dioxide (CO2) that has passed through the lower part of the baffle plate (323) to the vacuum pump (330).

[0316] The baffle plate (323) is formed vertically inside the condenser (322) to divide the condenser (322) into left and right sides, allowing only carbon dioxide (CO2) to pass to the other side and preventing water vapor (S) from moving to the other side.

[0317] The baffle plate (323) for this purpose is formed to extend downward from the top of the condenser (322a) and spaced apart from the bottom of the condenser (322a) by a predetermined distance.

[0318] In particular, the baffle plate (323) is positioned between the central axis of the gas inlet (322c) and the central axis of the carbon dioxide outlet (322e), as shown in FIG. 15.

[0319] FIG. 16 is a conceptual diagram showing a vacuum pump of a regeneration module equipped in a carbon capture system using a potassium carbonate aqueous solution according to an embodiment of the present invention.

[0320] The vacuum pump (330) sucks in carbon dioxide (CO2) from the condenser (320) in a vacuum state, separates the moisture contained in the carbon dioxide (CO2) from the carbon dioxide (CO2), and then supplies the carbon dioxide (CO2) from which moisture has been separated to the liquefaction module (400).

[0321] In particular, it is preferable that the vacuum pump (330) be a water-sealed vacuum pump.

[0322] Referring to FIG. 16, the vacuum pump (330) includes a casing (331), an impeller (332), a suction part (333), and an exhaust part (334).

[0323] The casing (331) is filled with water inside.

[0324] The impeller (332) is located inside the casing (331) and rotates to separate carbon dioxide (CO2) and moisture contained in the carbon dioxide (CO2).

[0325] In particular, the impeller (332) has an eccentric structure such that the center of the impeller (332) (the intersection of L2 and L3) is positioned above the center of the casing (331) (the intersection of L1 and L3), as shown in FIG. 16.

[0326] The suction part (333) is connected to one side of the upper part of the casing (331) and introduces carbon dioxide (CO2) from the condenser (320) into the interior of the casing (331).

[0327] The exhaust section (334) is connected to the upper side of the casing (331) and discharges the carbon dioxide (CO2) from which moisture has been separated to the liquefaction module (400).

[0328] A return pump (340) is installed on the piping connecting the stripping module (310) and the circulation tank (130) to supply the liquefied potassium carbonate aqueous solution (KCS) and condensate (C) in the stripping module (310) to the circulation tank (130).

[0329] The second filter unit (350) is installed on the piping connecting the stripping module (310) and the circulation tank (130) so as to be located on the other side of the return pump (340) to filter the liquefied potassium carbonate aqueous solution (KCS) and condensate (C).

[0330] The third valve section (360) is installed on the piping connecting the circulation tank (130), HDC module (150), stripping module (310), condenser (320), vacuum pump (330) and liquefaction module (400) to regulate the flow rate of the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved, the liquefied potassium carbonate aqueous solution (KCS), the condensate (C), the water vapor (S), and the carbon dioxide (CO2) flowing between the circulation tank (130), HDC module (150), stripping module (310), condenser (320), vacuum pump (330), and liquefaction module (400).

[0331] The third valve section (360) includes the first solenoid valve section (361) and the check valve section (362).

[0332] The first solenoid valve section (361) is installed on the piping connecting the circulation tank (130), HDC module (150), stripping module (310), condenser (320), vacuum pump (330) and liquefaction module (400) to control the flow rate of the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) is dissolved, the liquefied potassium carbonate aqueous solution (KCS), the condensate (C), and the water vapor (S) flowing between the circulation tank (130), HDC module (150), stripping module (310), condenser (320), vacuum pump (330), and liquefaction module (400).

[0333] The first solenoid valve section (361) includes a first solenoid valve (361a), a second solenoid valve (361b), a third solenoid valve (361c), and a fourth solenoid valve (361d).

[0334] The first solenoid valve (361a) is installed on the piping connecting the stripping module (310) and the HDC module (150) to control the flow rate of the potassium bicarbonate aqueous solution (KHCS) in which carbon dioxide (CO2) has been dissolved and passed through the HDC module (150).

[0335] The second solenoid valve (361b) is installed on the piping connecting the condenser (320) and the vacuum pump (330) to control the flow rate of carbon dioxide (CO2) supplied from the condenser (320).

[0336] A third solenoid valve (361c) is installed on the piping connecting the vacuum pump (330) and the liquefaction module (400) to control the flow rate of water-separated carbon dioxide (CO2) supplied from the vacuum pump (330).

[0337] The fourth solenoid valve (361d) is installed on the piping connecting the stripping module (310) and the circulation tank (130) to control the flow rate of the liquefied potassium carbonate aqueous solution (KCS) and condensate (C) supplied from the stripping module (310).

[0338] The check valve section (362) is installed on the piping connecting the stripping module (310) and the circulation tank (130) to control the flow rate of the liquefied potassium carbonate aqueous solution (KCS) and condensate (C).

[0339] The second sensor unit (370) is installed in the stripping module (310) and measures the internal pressure and internal temperature of the stripping module (310).

[0340] The second sensor unit (370) includes a second pressure sensor unit (371) and a second temperature sensor unit (372).

[0341] The second pressure sensor unit (371) is installed on the side of the stripping module (310) to measure the internal pressure of the stripping module (310).

[0342] The second temperature sensor unit (372) is installed on the side of the stripping module (310) to measure the internal temperature of the stripping module (310).

[0343] The liquefaction module (400) is connected to the regeneration module (300) and liquefies the separated carbon dioxide (CO2) flowing in from the regeneration module (300) to store the liquefied carbon dioxide (LCO2).

[0344] Referring to FIG. 4, the liquefaction module (400) includes a gas buffer tank (410), a gas liquefaction module (420), a storage tank (430), a second solenoid valve unit (440), and a third sensor unit (450).

[0345] The gas buffer tank (410) is connected to a vacuum pump (330) provided in the regeneration module (300) to store separated carbon dioxide (CO2) supplied from the vacuum pump (330) provided in the regeneration module (300) and stabilizes the flow rate of the separated carbon dioxide (CO2).

[0346] The gas liquefaction module (420) is connected to the gas buffer tank (410) and liquefies stabilized carbon dioxide supplied from the gas buffer tank (410) into liquefied carbon dioxide (LCO2).

[0347] The gas liquefaction module (420) includes a compressor (421), a dehumidifier (422), and a condenser (423).

[0348] The compressor (421) is connected to the gas buffer tank (410) and compresses the separated carbon dioxide (CO2) supplied from the gas buffer tank (410).

[0349] The dehumidifier (422) is connected to the compressor (421) and dehumidifies the moisture contained in the compressed carbon dioxide (CO2) supplied from the compressor (421).

[0350] In particular, the dehumidifier (422) dehumidifies the compressed carbon dioxide (CO2) so that the moisture content in the compressed carbon dioxide (CO2) is 10 ppm or less.

[0351] The condenser (423) is connected to the dehumidifier (422) and condenses the dehumidified carbon dioxide (CO2) supplied from the dehumidifier (422) to change the phase into liquefied carbon dioxide (LCO2).

[0352] The storage tank (430) is connected to a condenser (423) provided in the gas liquefaction module (420) and stores liquefied carbon dioxide (LCO2) supplied from the condenser (423) provided in the gas liquefaction module (420).

[0353] The second solenoid valve unit (440) is installed on the piping connecting the regeneration module (300), the gas buffer tank (410), the gas liquefaction module (420), and the storage tank (430) to control the flow rate of separated carbon dioxide (CO2), stabilized carbon dioxide (CO2), and liquefied carbon dioxide (LCO2) flowing between the regeneration module (300), the gas buffer tank (410), the gas liquefaction module (420), and the storage tank (430).

[0354] The second solenoid valve section (440) includes a fifth solenoid valve (441) and a sixth solenoid valve (442).

[0355] The fifth solenoid valve (441) is installed on the piping connecting the vacuum pump (330) provided in the regeneration module (300) and the gas buffer tank (410) to control the flow rate of separated carbon dioxide (CO2) supplied from the vacuum pump (330) provided in the regeneration module (300).

[0356] The sixth solenoid valve (442) is installed on the piping connecting the gas buffer tank (410) and the compressor (421) provided in the gas liquefaction module (420) to control the flow rate of stabilized carbon dioxide (CO2) supplied from the gas buffer tank (410).

[0357] The third sensor unit (450) includes a third pressure sensor unit (451) and a third temperature sensor unit (452).

[0358] The third pressure sensor unit (451) includes a fifth pressure sensor (451a) and a sixth pressure sensor (451b).

[0359] The fifth pressure sensor (451a) is installed on the piping connecting the condenser (423) and the storage tank (430) provided in the gas liquefaction module (420) to measure the pressure of the liquefied carbon dioxide (LCO2) supplied from the condenser (423) provided in the gas liquefaction module (420).

[0360] The sixth pressure sensor (451b) is located inside the gas buffer tank (410) and measures the internal pressure of the gas buffer tank (410).

[0361] The third temperature sensor unit (452) is installed on the piping connecting the gas liquefaction module (420) and the storage tank (430) to measure the temperature of the liquefied carbon dioxide (CO2) supplied from the gas liquefaction module (420).

[0362] The control module (500) is electrically connected to the circulation module (100), absorption module (200), regeneration module (300), and liquefaction module (400) to control the operation of the circulation module (100), absorption module (200), regeneration module (300), and liquefaction module (400).

[0364] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0365] The scope of the present invention is defined by the claims set forth below, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0367] 100: Circulation module 110: Transfer tank 120: Transfer pump 130: Circulation tank 140: Circulation pump 150: HDC Module 151: Differential pressure control unit 151a: Pressure maintaining part 151b: Balance maintenance part 152: Flow rate maintaining unit 160: First filtration section 161: 1st Strainer 162: 2nd Strainer 170: First valve section 171: Manual valve 172: Solenoid valve 173: Drain valve 174: Manual Valve 180: First sensor unit 181: pH sensor unit 182: Water level detection sensor unit 182a: Low water level detection sensor 182b: High water level sensor 183: First temperature sensor unit 183a: First temperature sensor 183b: Second temperature sensor 184: Flow sensor unit 184a: First flow sensor 184b: Second flow sensor 184c: Third flow sensor 184d: 4th flow sensor 185: First pressure sensor unit 185a: First pressure sensor 185b: Second pressure sensor 185c: Third pressure sensor 185d: 4th pressure sensor 200: Absorption Module 210: Gas injector 211: Fluid inlet 211a: Mixing tube 211b: Flow pipe 212: Gas inlet 212a: First gas inlet pipe 212b: Second gas inlet pipe 220: Highly Dispersed Reaction Module 221: Inlet flange 222: Bubble generator 222a: Bubble plate 222b: Orifice tube 223: Leakage flange section 230: Acceleration Response Module 231: Reaction part 231a: Reactor 231aa: Internal reactor 231b: Gas exhaust section 231c: Drain 232: Input / Output 232a: Inlet pipe 232b: Outflow pipe 233: Acceleration Reactor 233a: Accelerator reactor 233b: Circulation piping 240: Second valve section 241: First flow valve 242: Second flow valve 300: Playback Module 310: Stripping Module 311: Heater 311a: Receiving absence 311b: Bulkhead member 311ba: Upper bulkhead member 311bb: Lower bulkhead member 311c: Inlet 311d: Heat transfer tube 312: Heat exchange section 313: Regeneration Department 313a: Regeneration chamber 313b: Discharge flange 313c: Droplet separator 313d: Shatterproof plate 313e: Perforated plate 313f: Capture member 313g: Vacuum releaser 313h: Transparent window 313i: Eddy current preventer 320: Revenge 321: Cover plate section 321a: Cover plate 321b: Water discharge section 321c: Water inlet 322: Condenser 322a: Condenser 322b: Tube sheet 322c: Gas inlet 322d: Condensate drain 322e: Carbon dioxide emissions section 323: Beffle Plate 330: Vacuum pump 331: Casing 332: Impeller 333: Intake 334: Exhaust section 340: Return pump 350: Second filtration unit 360: Third valve section 361: First solenoid valve section 361a: First solenoid valve 361b: Second solenoid valve 361c: Third solenoid valve 361d: 4th solenoid valve 362: Check valve section 370: Second sensor unit 371: Second pressure sensor unit 372: Second temperature sensor unit 400: Liquefaction Module 410: Gas buffer tank 420: Gas Liquefaction Module 421: Compressor 422: Dehumidifier 423: Condenser 430: Storage Tank 440: Second solenoid valve section 441: 5th solenoid valve 442: 6th solenoid valve 450: 3rd sensor unit 451: Third pressure sensor unit 451a: 5th pressure sensor 451b: 6th pressure sensor 452: Third temperature sensor unit 500: Control Module 1000: Carbon capture system using potassium carbonate aqueous solution KCS: Potassium carbonate aqueous solution, K2CO3 aqueous solution KHCS: Potassium bicarbonate (potassium hydrogen bicarbonate) aqueous solution, KHCO3 aqueous solution G: Exhaust gas C: Condensate LCO2: Liquid carbon dioxide W: Water N: Nitrogen O: Oxygen

Claims

Claim 1 A circulation module in which a potassium carbonate aqueous solution is stored; an absorption module connected to the circulation module that mixes the potassium carbonate aqueous solution introduced from the circulation module with exhaust gas introduced from the outside, and then dissolves the carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; and a regeneration module connected to the circulation module that separates the carbon dioxide from the potassium bicarbonate aqueous solution in which the carbon dioxide is dissolved, introduced from the circulation module. and includes a liquefaction module connected to the regeneration module for liquefying the separated carbon dioxide introduced from the regeneration module and storing the liquefied carbon dioxide; the circulation module includes an HDC module for maintaining the pressure and flow rate of the potassium bicarbonate aqueous solution introduced from the absorption module and supplied to the regeneration module at a preset pressure and flow rate; and the absorption module includes a gas injector connected to the circulation module for mixing the potassium carbonate aqueous solution supplied from the circulation module with exhaust gas supplied from the outside; and at least one high-dispersion reaction module connected to the gas injector for generating microbubbles in the potassium carbonate aqueous solution introduced from the gas injector and the exhaust gas to dissolve a portion of the carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution. A carbon capture system using a potassium carbonate aqueous solution, comprising: an acceleration reaction module connected to the above-mentioned high-dispersion reaction module to form an artificial high-gravity field, and utilizing the formed artificial high-gravity field to dissolve a portion of the carbon dioxide in the potassium carbonate aqueous solution in which the carbon dioxide is dissolved in the above-mentioned high-dispersion reaction module and the remainder of the carbon dioxide in the exhaust gas in the potassium carbonate aqueous solution in which the carbon dioxide is dissolved. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete Claim 14 A carbon capture system using a potassium carbonate aqueous solution according to claim 1, wherein the gas injector comprises: a fluid inlet connected to the circulation module into which the potassium carbonate aqueous solution supplied from the circulation module is introduced; and a gas inlet connected to the upper and lower portions of the fluid inlet into which the exhaust gas is introduced. Claim 15 A carbon capture system using a potassium carbonate aqueous solution according to claim 14, wherein the fluid inlet comprises: a mixing pipe connected to the circulation module to mix the potassium carbonate aqueous solution introduced from the circulation module and the exhaust gas introduced from the gas inlet; and a flow pipe coupled to the other side of the mixing pipe to communicate with the mixing pipe, through which the potassium carbonate aqueous solution and the exhaust gas mixed in the mixing pipe flow, and the gas inlet comprises: a first gas inlet pipe connected to the upper part of the mixing pipe to introduce the exhaust gas; and a second gas inlet pipe connected to the lower part of the mixing pipe to face the first gas inlet pipe with respect to the mixing pipe to introduce the exhaust gas. Claim 16 A carbon capture system using an aqueous potassium carbonate solution, wherein the at least one highly dispersed reaction module is composed of three modules and connected in succession. Claim 17 A carbon capture system using a potassium carbonate aqueous solution, wherein the high-dispersion reaction module comprises: an inlet flange portion connected to the gas injector to receive the potassium carbonate aqueous solution mixed in the gas injector and the exhaust gas; a bubble generating portion coupled to the other side of the inlet flange portion to generate microbubbles in the mixed potassium carbonate aqueous solution and exhaust gas flowing in from the inlet flange portion to dissolve a portion of the carbon dioxide contained in the exhaust gas into the potassium carbonate aqueous solution; and an outlet flange portion coupled to the other side of the bubble generating portion, wherein the reaction of the mixed potassium carbonate aqueous solution and exhaust gas flowing in from the bubble generating portion is promoted by the microbubbles to dissolve the carbon dioxide contained in the exhaust gas, and the bubble generating portion increases the solubility of the carbon dioxide dissolved in the potassium carbonate aqueous solution by generating microbubbles to increase the contact area between the potassium carbonate aqueous solution and the exhaust gas. Claim 18 A carbon capture system using a potassium carbonate aqueous solution, wherein the bubble generating part comprises: a bubble plate coupled to the other end of the inlet flange part and one end of the outlet flange part; and at least one orifice tube formed inside the bubble plate, wherein the width of the orifice tube narrows from one side to the other. Claim 19 A carbon capture system using a potassium carbonate aqueous solution according to claim 18, wherein the bubble plate is formed to have an inner diameter equal to the inner diameter of the inlet flange portion and the inner diameter of the outlet flange portion, and the at least one orifice tube is disposed inside the bubble plate. Claim 20 In claim 1, the acceleration reaction module comprises: an inlet / outlet section including an inlet pipe connected to the high-dispersion reaction module through which a potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved in the high-dispersion reaction module and the exhaust gas are introduced, and an outlet pipe connected to the HDC module through which a potassium bicarbonate aqueous solution is discharged to the HDC module; and a reaction section into which the inlet pipe and the outlet pipe are inserted to receive the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved and the exhaust gas introduced through the inlet pipe. A carbon capture system using a potassium carbonate solution, comprising: a reaction unit positioned inside the reaction unit to communicate with the other side of the inlet pipe to form the artificial high gravity field; and an acceleration reaction unit that uses the artificial high gravity field to dissolve the remainder of the carbon dioxide in the potassium carbonate solution in which a portion of the carbon dioxide is dissolved in the high dispersion reaction module and the remainder of the carbon dioxide in the exhaust gas into the potassium carbonate solution in which a portion of the carbon dioxide is dissolved, wherein the acceleration reaction unit increases the solubility of the remainder of the carbon dioxide dissolved in the potassium carbonate solution in which a portion of the carbon dioxide is dissolved by increasing the mass transfer rate and reaction rate of the potassium carbonate solution in which a portion of the carbon dioxide is dissolved and the exhaust gas using the artificial high gravity field. Claim 21 A carbon capture system using a potassium carbonate aqueous solution according to claim 20, wherein the reaction unit comprises: a reactor receiving a potassium carbonate aqueous solution in which a portion of the carbon dioxide introduced from the inlet pipe is dissolved and the exhaust gas; a gas discharge unit connected to the upper part of the reactor for discharging nitrogen and oxygen contained in the exhaust gas; and a drain connected to the lower part of the reactor, wherein an internal reactor is formed in the internal central part of the reactor to divide the internal space of the reactor into a first internal space and a second internal space, and to receive the acceleration reaction unit in communication with the inlet pipe. Claim 22 A carbon capture system using a potassium carbonate aqueous solution according to claim 21, wherein the inlet pipe is inserted into the side of the reactor so as to face the side of the acceleration reaction section, the outlet pipe is inserted into the lower side of the reactor so as to face the inlet pipe, and one side of the outlet pipe is bent so as to face the lower surface of the reactor. Claim 23 A carbon capture system using a potassium carbonate aqueous solution according to claim 21, wherein the acceleration reaction unit comprises: an acceleration reactor located inside the inner reactor to form the artificial high gravity field; and a circulation pipe having a lower portion inserted into the interior of the acceleration reactor so as to be located inside the reactor and the acceleration reactor, wherein when the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved and the exhaust gas are introduced into the interior of the acceleration reactor through the inlet pipe, the remaining portion of the carbon dioxide is dissolved in the potassium carbonate aqueous solution in which a portion of the carbon dioxide is dissolved using the artificial high gravity field, and then the potassium bicarbonate aqueous solution, the nitrogen, and the oxygen are discharged through the circulation pipe into the first internal space formed between the reactor and the inner reactor. Claim 24 A carbon capture system using a potassium carbonate aqueous solution according to claim 1, further comprising a second valve section installed in the gas injector and the acceleration reaction module to control the flow rate of the exhaust gas supplied to the gas injector and the flow rate of the exhaust gas reacted in the acceleration reaction module, wherein the second valve section comprises: a first flow rate valve installed above the gas injector to control the flow rate of the exhaust gas supplied to the gas injector; and a second flow rate valve installed in the acceleration reaction module to control the flow rate of the exhaust gas reacted in the acceleration reaction module. Claim 25 delete Claim 26 delete Claim 27 delete Claim 28 delete Claim 29 delete Claim 30 delete Claim 31 delete Claim 32 delete Claim 33 delete Claim 34 delete Claim 35 delete Claim 36 delete Claim 37 delete Claim 38 delete Claim 39 delete Claim 40 delete Claim 41 delete Claim 42 delete Claim 43 delete Claim 44 delete Claim 45 delete Claim 46 delete Claim 47 delete Claim 48 delete Claim 49 delete Claim 50 A carbon capture system using an aqueous potassium carbonate solution according to claim 1, further comprising a control module electrically connected to the circulation module, the absorption module, the regeneration module, and the liquefaction module to control the operation of the circulation module, the absorption module, the regeneration module, and the liquefaction module.

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