Greenhouse gas emission reduction devices for ships and ships or marine structures equipped with such devices

Abstract

The present invention discloses a greenhouse gas emission reduction device for a ship that can mineralize and atomize CO2 for storage on board the ship, comprising: a seawater supply unit 110 that supplies seawater; an absorption liquid circulation supply unit 120 that provides and circulates an absorption liquid that absorbs CO2; an absorption tower 130 including a CO2 removal unit 131 that reacts exhaust gas emitted from a ship engine 10 with seawater to cool it, and reacts the cooled exhaust gas with the absorption liquid to convert CO2 into a carbonate aqueous solution and capture CO2; an absorption liquid regeneration unit 140 that reacts the carbonate aqueous solution with a divalent metal oxide or a divalent metal hydroxide to regenerate the absorption liquid and produce a precipitate; and an onboard storage unit 150 that separates, dries, and atomizes the precipitate and stores it on board the ship.

Description

[Technical Field]

[0001] The present invention relates to a greenhouse gas emission reduction device for ships and a ship or marine structure equipped with the same, and more particularly to a greenhouse gas emission reduction device for ships that captures CO2 from exhaust gas, mineralizes it, crushes it, and then atomizes it, allowing it to be stored on board without polluting the marine environment, facilitating loading and unloading, and a ship or marine structure equipped with the same. [Background technology]

[0002] In recent years, greenhouse gas emissions caused by the indiscriminate use of fossil fuels have led to global warming and the resulting natural disasters.

[0003] For this reason, a series of technologies related to capturing and storing carbon dioxide, a major greenhouse gas, without emitting it, is known as CCS (Carbon dioxide Capture and Storage) technology, which has attracted a great deal of attention in recent years. Of the CCS technologies, chemical absorption is the one that has progressed the most in commercialization due to its ability to process carbon dioxide on a large scale.

[0004] Furthermore, carbon dioxide emissions are regulated by the IMO's EEDI, which aims to reduce emissions by more than 50% compared to 2008 levels by 2050, and must also reduce emissions by 40% compared to 2008 levels by 2030. As a result, attention is being paid to technologies that do not emit CO2 or that capture CO2 that has been emitted.

[0005] Among CCS technologies that directly capture and store carbon dioxide, CO2 capture technology can be approached in a variety of ways depending on the CO2 generation conditions in the target process. The current representative technologies are absorption, adsorption, and membrane separation. Of these, wet absorption is the most mature technology for onshore plants and is easy to process large amounts of CO2, making it the capture technology closest to commercializing CCS technology. Amine and ammonia are mainly used as absorbents.

[0006] On the other hand, the aforementioned technologies for reducing carbon dioxide emissions or capturing the carbon dioxide produced have not yet been commercialized for ships, and methods for using hydrogen or ammonia as fuel are currently under development and have not yet reached the stage of commercialization.

[0007] In addition, ships equipped with scrubbers that use high-sulfur fuel oil have a disadvantage in that SOx has a high solubility and is first converted into a compound called NaSO3, making it difficult to remove CO2 until the SOx is completely dissolved. In particular, a separate, consumable absorbent material is used to remove CO2, which increases the cost of removing greenhouse gases.

[0008] Therefore, there is a need to apply technology to ships that use fossil fuels, which does not require a separate consumable absorbent material, and which converts the CO2 in the exhaust gas emitted from the ship's engine into a substance that does not have an environmental impact and stores it without discharging it into the sea. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a greenhouse gas emission reduction device for ships that can capture CO2 from exhaust gas, mineralize it, crush it, and then atomize it to store it on board the ship without polluting the marine environment, making loading and unloading easier, and a ship or marine structure equipped with the same. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, one embodiment of the present invention provides a greenhouse gas emission reduction device for a ship, including: an absorption tower including an absorption solution circulation supply unit that provides and circulates an absorption solution that absorbs CO2; an exhaust gas cooling unit that cools exhaust gas discharged from a ship engine; a CO2 removal unit that reacts the cooled exhaust gas with the absorption solution to convert CO2 into a carbonate aqueous solution and captures CO2; an absorption solution regeneration unit that reacts the carbonate aqueous solution with a regeneration reactant to regenerate the absorption solution and generate a precipitate; and an onboard storage unit that separates the precipitate and stores it onboard.

[0011] Here, the onboard storage unit can separate the sediment, dry it, pulverize it, and store it onboard.

[0012] In this case, the onboard storage unit may filter the turbid liquid in which the sediment and the absorbing liquid are mixed to separate the sediment, dry and remove the sediment using high-temperature dry air, and pulverize and atomize the sediment by supplying high-temperature compressed air.

[0013] Specifically, the onboard storage unit may include a separator including an outer wall and an internal filter, which causes the turbid liquid to flow between the outer wall and the internal filter to accumulate solid phase precipitates between the outer wall and the internal filter and returns the absorption liquid to the absorption liquid circulation supply unit or the absorption liquid regeneration unit; an air heater which blows high-temperature dry air into the separator to dry the precipitate at a high temperature; a crusher which is composed of an inner rotating shell and an outer rotating shell, each having a mesh of a certain size, and which passes the high-temperature dried precipitate between the inner rotating shell and the outer rotating shell to crush and uniformly atomize it; and a sediment storage tank which stores and accommodates the crushed sediment.

[0014] Here, the air heater can supply high-temperature dry air to the pulverizer.

[0015] At this time, the air heater can heat the air to 90°C to 100°C and provide it.

[0016] Furthermore, when the separation of the sediment and the high-temperature drying in the separator are completed, the separator can remove the sediment attached to the outer surface of the internal filter and discharge it into the pulverizer.

[0017] Compressed air can then be passed through the separator to remove the sediment.

[0018] In addition, the sediment can be removed through the contraction and expansion structure of the internal filter.

[0019] Furthermore, the apparatus may include a filter for collecting dust generated during pulverization by the pulverizer, or a cyclone dust collector for collecting the dust, and the collected powder or the collected powder may be supplied to the sediment storage tank.

[0020] The precipitate may contain carbonate, and the absorbing solution may be a monovalent alkali aqueous solution, such as an LiOH aqueous solution, an NaOH aqueous solution, an KOH aqueous solution, or an NH4OH aqueous solution.

[0021] The system may further include a seawater supply unit that supplies seawater from outside the ship, and the seawater supply unit may include a seawater pump that receives seawater from outside the ship through a sea chest and pumps it to the absorption tower, and a seawater control valve that adjusts the amount of seawater injected from the seawater pump to the absorption tower depending on the amount of exhaust gas.

[0022] Here, the exhaust gas cooling unit can cool the exhaust gas discharged from the ship engine by reacting it with the seawater supplied from the seawater supply unit.

[0023] The exhaust gas cooling section can cool the exhaust gas discharged from the marine engine by causing the exhaust gas to react with fresh water.

[0024] Furthermore, the exhaust gas cooling unit can cool the exhaust gas by circulating fresh water provided from the onboard cooling system through the heat exchange piping surrounding the exhaust gas discharge pipe.

[0025] The exhaust gas cooling section may be provided inside the absorption tower.

[0026] Further, the absorbing liquid circulation supply unit may include an absorbing liquid storage tank that stores the absorbing liquid, an absorbing liquid pump that pumps and transfers the absorbing liquid from the absorbing liquid storage tank, an absorbing liquid circulation tank that mixes and stores the aqueous carbonate solution discharged from the absorption tower and the absorbing liquid supplied from the absorbing liquid pump, and an absorbing liquid circulation pump that supplies the absorbing liquid from the absorbing liquid circulation tank to an upper stage of the CO2 removal unit and circulates it.

[0027] Here, the absorbent pump can supply the absorbent to the absorbent circulation tank so as to make up for the deficiency of the absorbent discharged to the onboard storage section.

[0028] The absorbent may be produced by electrolyzing seawater and fresh water, respectively, and stored in the absorbent storage tank.

[0029] The absorption tower further includes a seawater supply unit that supplies seawater from outside the ship, the exhaust gas cooling unit is provided inside the absorption tower, and the absorption tower further includes, as the exhaust gas cooling unit, an SOx absorption unit that reacts the exhaust gas with the seawater supplied from the seawater supply unit to cool it while dissolving and removing SOx, and the CO2 removal unit reacts the cooled exhaust gas from which SOx has been removed with absorbing liquid from the absorbing liquid circulation supply unit to convert it into a carbonate aqueous solution, thereby capturing CO2.

[0030] Alternatively, the absorption tower may further include a seawater supply unit that supplies seawater from outside the ship, and the absorption tower may further include a NOx absorption unit that absorbs and removes NOx from the exhaust gas, the exhaust gas cooling unit is provided inside the absorption tower, and cools the exhaust gas from which NOx has been removed by reacting it with the seawater supplied from the seawater supply unit, and the CO2 removal unit reacts the cooled exhaust gas with the absorbing liquid from the absorbing liquid circulation supply unit to convert it into a carbonate aqueous solution and capture CO2.

[0031] Alternatively, the absorption tower may further include a seawater supply unit that supplies seawater from outside the ship, and the exhaust gas cooling unit may be provided inside the absorption tower. The absorption tower may include a NOx absorption unit that absorbs and removes NOx from the exhaust gas, a SOx absorption unit that reacts the exhaust gas from which the NOx has been removed with the seawater supplied from the seawater supply unit to cool it, and dissolves and removes SOx, as the exhaust gas cooling unit, and a CO2 removal unit that reacts the cooled exhaust gas from which SOx has been removed with an absorbing solution from the absorbing solution circulating supply unit to convert the cooled exhaust gas from which SOx has been removed into a carbonate aqueous solution, which is collected and collected to remove CO2.

[0032] The NOx absorbing portion may include an SCR.

[0033] Here, the NOx absorption unit may further include a urea water storage tank that stores urea water, and a urea water supply pump that pumps the urea water from the urea water storage tank and supplies it to an injection nozzle recessed in a lower stage of the SCR.

[0034] The SOx absorption unit can also include a flow path through which the exhaust gas passes, and a multi-stage seawater injection nozzle that injects the seawater supplied from the seawater supply unit downward by opening and closing a seawater control valve to dissolve SOx, remove dust, and cool the exhaust gas.

[0035] Here, the SOx absorber includes a first temperature sensor and a second temperature sensor that measure the temperatures before and after the exhaust gas passing through the seawater injection nozzle, respectively, and can adjust the amount of seawater injected by the seawater injection nozzle according to the amount of exhaust gas or the measured temperature.

[0036] In addition, the flow path may be formed with a plurality of laminated plates spaced apart from one another, a structure forming a curved flow path, or an absorber filled with a filler, in which holes through which exhaust gas passes are alternately arranged, and a partition or umbrella-shaped blocking plate for preventing backflow of cleaning water may be formed.

[0037] Furthermore, the CO2 removal unit may include a first injection nozzle that injects the absorbing solution supplied from the absorbing solution regeneration unit, a first filler formed below the first injection nozzle and performing a primary reaction between the exhaust gas and the absorbing solution, a second injection nozzle that injects the absorbing solution provided and circulated from the absorbing solution circulation supply unit, and a second filler formed below the second injection nozzle and performing a secondary reaction between the exhaust gas and the absorbing solution.

[0038] Here, the CO2 remover may further include a mist removal plate having a curved multi-plate structure formed at an upper part of the second injection nozzle to block the discharge of the absorbing solution, and a partition or umbrella-shaped blocking plate to prevent backflow of the absorbing solution.

[0039] The CO2 removal section may include a cooling jacket that cools the heat generated in the first filler and the second filler.

[0040] Furthermore, the CO2 remover can adjust the injection amount of the absorption liquid by monitoring the pH corresponding to the degree of reaction in the first packing and the second packing.

[0041] The absorbent regeneration unit may include a regeneration reactant storage tank that stores the regeneration reactant, a transfer pump that pumps and transfers the carbonate aqueous solution, and a mixing tank that mixes and reacts the regeneration reactant with the carbonate aqueous solution to regenerate the absorbent and generate solid carbonate, and returns the regenerated absorbent to the absorption tower.

[0042] Here, the regeneration reactant may include a divalent metal oxide or a divalent metal hydroxide.

[0043] The system may further include a wash water treatment unit including a wash water tank for storing the wash water discharged from the absorption tower, a filtering unit for adjusting the turbidity of the wash water transferred from the wash water tank so that it meets the overboard discharge conditions, a water treatment device including a neutralizer injection unit for adjusting pH, and a sludge storage tank for separating and storing solid waste.

[0044] Here, the system further includes a seawater supply unit that supplies seawater from outside the ship, and when the cleaning water that has been treated in the water treatment device is discharged overboard, it can be dissolved or diluted in the seawater supplied from the seawater supply unit and then discharged.

[0045] The wash water treatment unit may further include a fresh water cooler that cools the seawater supplied from the seawater supply unit into cooled fresh water.

[0046] The marine engine may further include an EGE formed between the NOx absorption section and the SOx absorption section, for exchanging heat between the waste heat of the marine engine and boiler water.

[0047] The steam generating unit may further include an auxiliary boiler that receives a mixture of heat-exchanged steam and saturated water, separates the steam, and supplies the steam to a steam consuming destination; a boiler water circulating pump that circulates boiler water from the auxiliary boiler to the EGE; a cascade tank that recovers condensed water from the steam consuming destination; and a steam generating unit that includes a supply pump and a control valve that adjusts the amount of boiler water and supplies it from the cascade tank to the auxiliary boiler.

[0048] In addition, the exhaust gas cooling unit branches and cools at least a portion of the exhaust gas emitted from the ship engine, and the CO2 removal unit reacts the cooled exhaust gas with the absorption liquid to convert CO2 into the carbonate aqueous solution and capture CO2.

[0049] Here, the exhaust gas cooling section may be provided with a blower that supplies at least a portion of the branched exhaust gas to the exhaust gas cooling section.

[0050] In this case, the air blowing means may be a blower.

[0051] In addition, the remaining exhaust gas that is not branched to the exhaust gas cooling unit among the exhaust gases discharged from the marine engine is discharged through a main exhaust pipe, and at least a portion of the exhaust gas that is branched to the exhaust gas cooling unit may be combined with the main exhaust pipe and discharged after CO2 is captured, or may be discharged through a separate exhaust pipe.

[0052] Furthermore, the sediment storage tank may have an openable structure for loading and unloading the sediment contained therein, or may have a structure that is separated from the ship's deck for loading and unloading.

[0053] The air heater can also heat the air using waste heat from the exhaust gas discharged from the marine engine.

[0054] Meanwhile, another embodiment of the present invention provides a ship or marine structure equipped with the above-described greenhouse gas emission reduction device for a ship. [Effects of the Invention]

[0055] According to the present invention, CO2 can be captured from exhaust gas, mineralized, crushed, and then atomized and stored on board the ship, facilitating loading and unloading. Greenhouse gases are mineralized and stored, and are not released into the ocean, reducing environmental pollution. NOx, SOx, and CO2 can be simultaneously removed and stored in a solid state with few impurities, such as Na2CO3, NaHCO3, (NH4)2CO3, and NH4HCO3. After removing SOx, CO2 can be removed, suppressing side reactions caused by SOx remaining in the exhaust gas, thereby improving the solubility of CO2 and the efficiency of CO2 removal. [Brief explanation of the drawings]

[0056] [Figure 1] 1 is a diagram showing the configuration of a greenhouse gas emission reduction device for a ship according to an embodiment of the present invention; [Figure 2] 2 is a diagram showing a system circuit diagram of the vessel greenhouse gas emission reduction device of FIG. 1. [Figure 3] FIG. 3 is a view showing the seawater supply section and the absorption tower of FIG. 2 in isolation. [Figure 4] FIG. 3 is a diagram showing an absorbent circulation supply unit and an absorbent regeneration unit in FIG. 2, separated from each other. [Figure 5] FIG. 3 is a view showing the onboard storage section of FIG. 2 in isolation. [Figure 6] FIG. 3 is a view showing the cleaning water treatment section of FIG. 2 in isolation. [Figure 7] FIG. 3 is a view showing the steam generating unit of FIG. 2 in isolation. [Figure 8] 4 is a diagram illustrating a CO2 removal unit in FIG. 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0057] Hereinafter, an embodiment of the present invention having the above-mentioned features will be described in more detail with reference to the accompanying drawings.

[0058] An absorption tower 130 includes a CO2 removal unit 131 that reacts exhaust gas emitted from a ship engine 10 with seawater to cool it, and then reacts the cooled exhaust gas with the absorbing solution to convert the CO2 into a carbonate solution and capture the CO2; an absorbing solution regeneration unit 140 that reacts the carbonate solution with a divalent metal oxide or a divalent metal hydroxide to regenerate the absorbing solution and produce a precipitate; and an onboard storage unit 150 that separates, dries, and atomizes the precipitate and stores it onboard, with the aim of mineralizing and atomizing the CO2 and storing it onboard without polluting the marine environment.

[0059] Here, depending on the type and specifications of the ship engine used as the main engine or the power generation engine (low-pressure engine or high-pressure engine) and the type of fuel supplied to the ship engine (HFO, MDO, LNG, MGO, LSMGO, ammonia, etc.), the absorption tower can be configured to selectively include a NOx absorption unit or a SOx absorption unit in addition to the CO2 removal unit, or to include both.

[0060] In particular, when LNG is used as fuel for ship engines, no SOx is generated, so there is no need to install a separate SOx absorption unit. However, when low-sulfur fuel oil (LSMGO) is used, a small amount of SOx may be generated, so an SOx absorption unit can be further installed that can simultaneously cool the exhaust gas and absorb SOx by dissolving it.

[0061] In the following, an embodiment will be described in which an NOx absorbing section, an SOx absorbing section as an exhaust gas cooling section, and a CO2 removing section are stacked in this order in an absorption tower, but the present invention is not limited to this.

[0062] In particular, the exhaust gas cooling unit cools the exhaust gas emitted from the ship's engine, lowering the temperature of the exhaust gas and facilitating the absorption of CO2 by the absorption liquid, but a SOx absorption unit using seawater can also perform this role, or the exhaust gas can be cooled using a heat exchange method with fresh water. Specifically, fresh water provided from the ship's cooling system (not shown) can be circulated through a heat exchange piping (not shown) surrounding the exhaust gas discharge pipe through which the exhaust gas flows, and the exhaust gas can be cooled to a temperature of 27°C to 33°C using a heat exchange method with the fresh water.

[0063] In this case, in the water cooling method in which the exhaust gas is directly cooled by fresh water, the temperature of the absorbing solution drops due to the addition of fresh water, which can reduce the greenhouse gas absorption performance. Therefore, it is preferable to cool the exhaust gas using a heat exchange method to prevent the concentration of the absorbing solution from decreasing and maintain a constant greenhouse gas absorption performance.

[0064] The greenhouse gas emission reducing device for a ship having the above-described configuration will be specifically described below with reference to FIGS.

[0065] First, the seawater supply unit 110 is configured to supply seawater to the absorption tower 130 and the wash water treatment unit 160, and specifically includes a seawater pump 112 that receives seawater by drawing it in through a sea chest 111 from outside the ship and pumps it to the SOx absorber 132, as shown in Figures 2 and 3, and a seawater control valve 113 that adjusts the amount of seawater injected from the seawater pump 112 to the SOx absorber 132 depending on the amount of exhaust gas. Preferably, the seawater pump 112 may be a quenching seawater pump.

[0066] Depending on the water depth, seawater can be selectively supplied to the seawater pump 112 from a high sea chest that draws in upper seawater or a low sea chest that draws in lower seawater when the ship is docked or sailing. That is, when the ship is docked, the high sea chest is used because the upper seawater is cleaner than the lower seawater, and when the ship is sailing, the low sea chest is used because the lower seawater is cleaner than the upper seawater.

[0067] Here, the seawater control valve 113 is a manually operated diaphragm valve or a solenoid valve that adjusts the flow rate of seawater, and can adjust the amount of seawater sprayed through the seawater spray nozzle according to the amount of exhaust gas.

[0068] Next, the absorbent circulation supply unit 120 is configured to provide an absorbent that absorbs CO2 contained in the exhaust gas and circulate it to the absorption tower 130. Specifically, as shown in Figures 2 and 4, it may include an absorbent storage tank 121 that stores the absorbent, an absorbent pump 122 that pumps the absorbent from the absorbent storage tank 121 and transfers it to the absorbent circulation tank 123, an absorbent circulation tank 123 that mixes and stores the carbonate aqueous solution discharged from the absorption tower 130 after scrubbing the exhaust gas with the absorbent supplied from the absorbent pump 122, and an absorbent circulation pump 124 that provides the absorbent from the absorbent circulation tank 123 to the upper stage of the CO2 removal unit 131 and circulates it.

[0069] In this case, the absorbing liquid is a monovalent alkali aqueous solution including an aqueous LiOH (lithium hydroxide) solution, an aqueous NaOH (sodium hydroxide) solution, an aqueous KOH (potassium hydroxide) solution, or an aqueous NH4OH (ammonia) solution, and preferably an aqueous NaOH solution and / or an aqueous NH4OH solution.

[0070] Here, in the first stage, exhaust gas is converted into a carbonate aqueous solution by reacting with an absorbing solution, which is a monovalent alkali aqueous solution. CO2 in the exhaust gas reacts with water to produce H2CO3 (carbonate) according to the following formula 1. At this time, the water that reacts with CO2 may be water that coexists in the absorbing solution, which is a monovalent alkali aqueous solution.

[0071] [ka]

[0072] After the first step, if the monovalent alkali aqueous solution used as the absorption liquid is an NaOH aqueous solution, it will be converted into a carbonate aqueous solution by producing the carbonate salts NaHCO3 (sodium bicarbonate) or Na2CO3 (sodium carbonate) and water according to the following formula 2.

[0073] [ka]

[0074] Alternatively, after the first step, if the monovalent alkali aqueous solution used as the absorption liquid is an NH4OH aqueous solution, the carbonate NH4HCO3 (ammonium bicarbonate) or (NH4)2CO3 (ammonium carbonate) and water are produced according to the following formula 3, converting the solution into a carbonate aqueous solution.

[0075] [ka]

[0076] In addition, the absorption liquid pump 122 can be configured to supply a certain amount of absorption liquid to the absorption liquid circulation tank 123 to fill any shortage of absorption liquid that may occur when solid-phase CaCO3 carbonate is stored on board in the onboard storage section 150.

[0077] Meanwhile, the NaOH absorption solution can be produced by electrolyzing seawater and fresh water, respectively, and stored in the absorption solution storage tank 121. Electricity can be generated through the reduction and oxidation of Na to supply a certain ratio of power applied for electrolysis, thereby reducing part of the power required for producing NaOH(aq).

[0078] In the absorption tower 130, the absorbing solution comes into contact with the exhaust gas and CO2 is ionized into ions. The ionized absorbing solution flows into the absorbing solution circulation tank 123. In the absorbing solution discharged from the lower stage of the CO2 removal section 131, CO3 2- If all of the CO2 absorption by the - High concentration of ions, CO3 2- The concentration of CO2 is relatively low, and the temperature of the absorption liquid is relatively high, so the amount of precipitate is small and most of it exists in the form of ions. - As the concentration of ions increases, they can be continuously used to absorb CO2 until a certain concentration is reached.

[0079] Next, the absorption tower 130 includes a CO2 removal section 131 that reacts the exhaust gas emitted from the ship engine 10 with seawater to cool it, and then reacts the cooled exhaust gas with an absorption liquid to convert the CO2 into a carbonate aqueous solution and capture the CO2.

[0080] For example, the absorption tower 130 further includes an SOx absorption section 132 that reacts the exhaust gas with seawater supplied from the seawater supply section 110 to cool it while dissolving and removing SOx, and the CO2 removal section 131 reacts the exhaust gas from which SOx has been removed with seawater supplied from the seawater supply section 110 to cool it, and reacts the cooled exhaust gas with the absorbing liquid from the absorbing liquid circulation supply section 120 to convert it into a carbonate aqueous solution, thereby capturing CO2.

[0081] Alternatively, the absorption tower 130 may further include a NOx absorption section 133 that absorbs and removes NOx from the exhaust gas, and the CO2 removal section 131 may react the exhaust gas from which NOx has been removed with seawater supplied from the seawater supply section 110 to cool it, and may react the cooled exhaust gas with the absorbing liquid from the absorbing liquid circulation supply section 120 to convert it into a carbonate aqueous solution, thereby capturing CO2.

[0082] Alternatively, the absorption tower 130 may be configured to sequentially stack a NOx absorption section 133 that absorbs and removes NOx from the exhaust gas, a SOx absorption section 132 that reacts the exhaust gas from which NOx has been removed with seawater supplied from the seawater supply section 110 to cool it and dissolve and remove SOx, and a CO2 removal section 131 that reacts the exhaust gas from which SOx has been removed with the absorbing solution from the absorbing solution circulation supply section 120 to convert it into a carbonate aqueous solution, which is then captured and used to remove CO2.

[0083] Specifically, referring to FIG. 3, the CO2 removal unit 131 may include a first injection nozzle 131a that injects the absorbing solution supplied from the absorbing solution regeneration unit 140, a first filler 131b formed below the first injection nozzle 131a to cause a primary reaction between the exhaust gas and the absorbing solution, a second injection nozzle 131c that injects the absorbing solution provided and circulated from the absorbing solution circulation supply unit 120, and a second filler 131d formed below the second injection nozzle 131c to cause a secondary reaction between the exhaust gas and the absorbing solution.

[0084] Here, the second injection nozzle 131c may be formed to branch off from the upper part of the first filler 131b and the upper part of the second filler 131d and simultaneously inject the absorbing liquid downward.

[0085] In addition, as shown in FIG. 8, the CO2 removal unit 131 may further include a mist removal plate 131e having a curved multi-plate structure that is formed on the upper part of the second injection nozzle 131c and forms droplets to prevent loss of the absorbing solution due to external discharge, and a partition wall 131f or an umbrella-shaped blocking plate 131g that prevents backflow of the absorbing solution into the exhaust gas piping.

[0086] Furthermore, the CO2 removal unit 131 may include a cooling jacket (not shown) for cooling the heat generated in the first filler 131b and the second filler 131d, thereby maintaining the temperature of the exhaust gas at 80 to 100°C, or may further lower the temperature of the absorbing solution supplied from the first injection nozzle 131a and the second injection nozzle 131c by 10 to 20°C, thereby increasing the absorption rate during the heat generation process in which CO2 is absorbed into the absorbing solution and minimizing loss due to evaporation of H2O.

[0087] In addition, the first filler 131b and the second filler 131d may be formed in a form in which distillation column packing designed to have a large contact area per unit volume is configured in a multi-stage configuration. An appropriate distillation column packing may be selected in consideration of the contact area per unit area, gas pressure drop, and flooding velocity. A solution redistributor may be formed between the multi-stage distillation column packing to prevent solution channeling.

[0088] Furthermore, the CO2 removal unit 131 continuously monitors the pH corresponding to the degree of reaction in the first filler 131b and the second filler 131d through the pH sensor P, and can adjust the amount of absorbent sprayed through the first spray nozzle 131a and the second spray nozzle 131c according to the degree of reaction.

[0089] Specifically, referring to FIG. 3, the SOx absorption unit 132 includes a flow path 132a through which the exhaust gas passes, and a multi-stage seawater injection nozzle 132b that injects seawater supplied from the seawater supply unit 110 downward by opening and closing the seawater control valve 113 to dissolve SOx, remove dust such as soot, and cool the exhaust gas.

[0090] The SOx absorber 132 also includes a first temperature sensor T1 and a second temperature sensor T2 that measure the temperatures before and after the exhaust gas passing through the seawater injection nozzle 132b, respectively, and can adjust the amount of seawater injected by the seawater injection nozzle 132b according to the amount of exhaust gas or the temperatures measured by the first temperature sensor T1 and the second temperature sensor T2, respectively.

[0091] Furthermore, the flow path 132a may be provided with a plurality of laminated plates, structures forming curved flow paths, or absorbers filled with fillers, in which holes through which the exhaust gas passes are arranged alternately and spaced apart from one another to lengthen the flow path of the exhaust gas and increase the connection time and contact area (not shown), thereby increasing the contact area between the seawater and the exhaust gas and facilitating cooling and absorption. Partition walls 132c or umbrella-shaped blocking plates 132d may also be formed to prevent backflow of cleaning water, which is a reaction product of the exhaust gas and the absorption solution.

[0092] As a result, SOx is first removed through the SOx absorption unit 132, and then CO2 is removed through the CO2 removal unit 131. This solves the problem that SOx has high solubility and is first converted into compounds such as Na2SO4, making it difficult to remove CO2 until all SOx is dissolved, thereby improving the efficiency of CO2 removal.

[0093] The wash water discharged from the bottom of the SOx absorber 132 contains SO3 - , SO4 2- Ionic compounds other than sodium sulfate, sodium phosphate, sodium carbonate, sodium hydroxide ...

[0094] Meanwhile, the NOx absorption unit 133 includes an SCR (Selective Catalyst Reduction) 133c to remove NOx, a urea water storage tank 133a for storing urea water, and a urea water supply pump 133b for pumping the urea water from the urea water storage tank 133a and supplying it to an injection nozzle located at the lower stage of the SCR 133c.

[0095] The steam generating unit 170 may further include an EGE 134 formed between the NOx absorbing unit 133 and the SOx absorbing unit 132 for heat exchange between the waste heat of the marine engine 10 and the boiler water from the steam generating unit 170 .

[0096] Furthermore, as shown in FIG. 3, the absorption tower 130 diverts (branches) at least a portion of the exhaust gas emitted from the marine engine 10, reacts it with seawater to cool it, and reacts the cooled exhaust gas with an absorption liquid to convert CO2 into a carbonate aqueous solution, thereby capturing CO2.

[0097] That is, by providing a blower 135 that branches off at least a portion of the exhaust gas and supplies it to the SOx absorber 132, the back pressure generated by the piping system of the absorption tower 130 can be minimized, and the diameter of the absorption tower 130 can be minimized and the height can be designed to be high, thereby overcoming restrictions on installation space.

[0098] Here, the blowing means 135 can be composed of a blower 135a and an air blowing control valve 135b, and the blower 135a is preferably designed to blow or pressurize and transfer exhaust gas at 40°C to 50°C when the SOx absorption section 132 is installed, and to blow or pressurize and transfer exhaust gas at around 300°C when the SOx absorption section 132 is not installed.

[0099] In this case, the remaining exhaust gas discharged from the marine engine that is not branched to the absorption tower 130 is discharged through the main exhaust pipe, and at least a portion of the exhaust gas branched to the absorption tower 130 may be discharged by joining the main exhaust pipe after CO2 is captured, or may be discharged through a separate exhaust pipe.

[0100] Next, the absorbent regenerating section 140 reacts the carbonate aqueous solution with a divalent metal oxide or a divalent metal hydroxide to regenerate the absorbent and produce a precipitate.

[0101] Specifically, referring to FIG. 4, the absorbent regeneration unit 140 may include a regeneration reactant storage tank 141 that stores a regeneration reactant of divalent metal oxide (CaO) or divalent metal hydroxide (Ca(OH)2), a transfer pump 142 that pumps the carbonate aqueous solution from the absorbent circulation tank 123 and transfers it to a mixing tank 143, and the mixing tank 143 that mixes and reacts the regeneration reactant with the carbonate aqueous solution to regenerate the absorbent and generate solid carbonate (CaCO3(s)), and returns the regenerated absorbent to the absorption tower 130 for reuse.

[0102] First, when NaOH and CO2 react to produce the carbonate NaHCO3 (sodium bicarbonate) or Na2CO3 (sodium carbonate), the carbonate NaHCO3 (sodium bicarbonate) or Na2CO3 (sodium carbonate) reacts with CaO (calcium oxide) according to the following equation 4 to produce the carbonate CaCO3 while regenerating NaOH, or reacts with Ca(OH)2 (calcium hydroxide) according to the following equation 5 to produce the carbonate CaCO3 while regenerating NaOH.

[0103] [ka]

[0104] [ka]

[0105] Alternatively, when NH4OH and CO2 react to produce NH4HCO3 (ammonium bicarbonate) or (NH4)2CO3 (ammonium carbonate), the carbonate NH4HCO3 (ammonium bicarbonate) or (NH4)2CO3 (ammonium carbonate) reacts with CaO (calcium oxide) according to the following equation 6 to produce the carbonate CaCO3 while regenerating NH4OH, or reacts with Ca(OH)2 (calcium hydroxide) according to the following equation 7 to produce the carbonate CaCO3 while regenerating NH4OH.

[0106] [ka]

[0107] [ka]

[0108] Here, the HCO3 in the absorption liquid circulation tank 123 - When the ion concentration becomes high, the absorbing solution is transferred to the mixing tank 143 through the transfer pump 142, so that the absorbing solution can be transferred at a concentration that allows it to continuously absorb CO2 even during the mineralization process in the subsequent process.

[0109] In addition, the mixing tank 143 regenerates the absorbing solution by reacting the absorbing solution in which CO2 is ionized with CaO or Ca(OH)2, converts CO2 into the form of CaCO3, and converts CaO or Ca(OH)2 into OH through the reactions of [Chemical Formula 4] to [Chemical Formula 7]. - Ions are supplied, and CO3 2- The ion is Ca 2+ It can combine with ions to produce solid, insoluble CaCO3.

[0110] Next, the onboard storage unit 150 filters the turbid liquid, which is a mixture of sediment and absorbing solution, to separate the sediment from the absorbing solution, dries and removes the sediment using high-temperature dry air, and then pulverizes and atomizes the high-temperature dried sediment by supplying high-temperature compressed air.

[0111] Specifically, referring to FIG. 5, the onboard storage unit 150 includes a separator 153 that is configured to allow turbid liquid to flow between the outer wall 151 and the internal filter 152, thereby accumulating solid phase sediments between the outer wall 151 and the internal filter 152, and return the absorption liquid to the absorption liquid circulation supply unit 120 and / or the absorption liquid regeneration unit 140, respectively; an air heater 154 that blows high-temperature dry air into the separator 153 to dry the sediment at a high temperature; a crusher 155 that is configured to have an inner rotating shell and an outer rotating shell formed of 190 to 210 mesh, respectively, and that passes the high-temperature dried sediment between the inner rotating shell and the outer rotating shell to crush and uniformly atomize it; and a sediment storage tank 156 that stores and accommodates the crushed sediment.

[0112] Here, the air heater 154 blows high-temperature dry air to the pulverizer 155, thereby reducing the moisture content of the pulverized sediment particles during pulverization, thereby preventing solidification due to moisture.

[0113] In addition, the air heater 154 heats the air to 90°C to 100°C to prevent the internal filter 152 and parts related to the pulverizer 155 from being deformed or damaged by high temperatures, and heats the air using steam generated by the waste heat of the ship's engine 10 to remove moisture from the heated air to provide high-temperature dry air.

[0114] Furthermore, after the separation of the sediment and the high-temperature drying in the separator 153 are completed, the separator 153 can remove the sediment adhering to the outer surface of the internal filter 152 and discharge it into the crusher 155 .

[0115] For example, sediment can be physically removed from the outer surface of the internal filter 152 by flowing dry compressed air through the separator 153, or sediment can be physically removed from the outer surface of the internal filter 152 through the contraction and expansion structure of the internal filter 152.

[0116] Here, an on-off valve 157 formed in the pipe between the separator 153 and the pulverizer 155 can be operated so as to open during removal and close when removal is complete.

[0117] In addition, a filter for collecting dust generated during pulverization by the pulverizer 155 or a cyclone dust collector 158 for collecting dust may be included, and the collected or dust-collected powder may be supplied to a sediment storage tank 156, and only the air may be released to the outside.

[0118] Furthermore, the turbid liquid collected on the outside of the outer wall 151 of the separator 153 can be returned to the mixing tank 143 of the absorbent regeneration section 140 by a separate pump or a structure combining a separation pump, a valve 159 and piping.

[0119] The sediment storage tank 156 may have an open / close structure to load and unload the sediment stored therein after high-temperature drying and crushing / pulverization has been completed, or may have a structure that can be separated from the ship's deck to load and remove the collected sediment.

[0120] Next, as shown in FIG. 6, the wash water treatment unit 160 includes a wash water tank 161 for storing the wash water discharged from the absorption tower 130, a filtering unit for adjusting the turbidity of the wash water transferred from the wash water tank 161 so that it meets the overboard discharge conditions, a water treatment device 162 equipped with a neutralizing agent injection unit for adjusting pH, and a sludge storage tank 163 for separating and storing solid waste.

[0121] Furthermore, when the wash water that has been treated in the water treatment device 162 is discharged overboard, it can be dissolved (diluted) in seawater supplied from the seawater supply unit 110 and then discharged. At this time, a fresh water cooler 164 that cools the seawater supplied from the seawater supply unit 110 to cool fresh water can be further included, and the cooled seawater from the fresh water cooler 164 can be supplied to the wash water that has been treated in the water treatment device 162, and the cooled seawater from the fresh water cooler 164 can be dissolved (diluted) and then discharged overboard.

[0122] 3, the steam generator 170 may further include an EGE 134 formed between the NOx absorption unit 133 and the SOx absorption unit 132, for heat exchange between waste heat from the ship engine and boiler water. Specifically, as shown in FIG. 7, the steam generator 170 includes an auxiliary boiler 171 that receives a mixture of steam and saturated water that has been heat exchanged through the EGE 134, separates the steam using a steam drum (not shown), and supplies the steam to steam-consuming devices on the ship, a boiler water circulating pump 172 that circulates boiler water from the auxiliary boiler 171 to the EGE 134, a cascade tank 173 that collects condensed water that has changed phase after being consumed by the steam-consuming devices, and a supply pump 174 and a control valve 175 that adjust the amount of boiler water supplied from the cascade tank 173 to the auxiliary boiler 171, thereby generating and supplying steam required for heating devices on the ship.

[0123] Here, when the load of the ship engine 10 is heavy, the amount of heat that can be provided from the exhaust gas is high and the amount of steam required on board can be sufficiently produced through the EGE 134, but if this is not the case, the required steam can be produced by burning fuel in the auxiliary boiler 171 itself.

[0124] Meanwhile, another embodiment of the present invention provides a ship or marine structure equipped with the above-described greenhouse gas emission reduction device for a ship.

[0125] Therefore, according to the configuration of an embodiment of the present invention, CO2 can be captured from exhaust gas, mineralized, crushed, and then atomized and stored on board the ship, facilitating loading and unloading. Since greenhouse gases are mineralized and stored rather than released into the ocean, environmental pollution can be reduced. NOx, SOx, and CO2 can be simultaneously removed and stored in a solid state with few impurities such as Na2CO3, NaHCO3, (NH4)2CO3, and NH4HCO3. CO2 can be removed after SOx is removed, suppressing side reactions caused by SOx remaining in the exhaust gas, and improving the solubility of CO2 and the efficiency of CO2 removal.

[0126] The embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, so it should be understood that there may be various equivalents and modifications that can be substituted for them at the time of this application.

Claims

1. CO ２ an absorbent circulation supply unit that provides and circulates an absorbent that absorbs the an exhaust gas cooling unit that cools exhaust gas discharged from the ship engine; The cooled exhaust gas is reacted with the absorption liquid to produce CO ２ is converted into a carbonate solution and CO ２ CO ２ an absorption tower including a removal section; an absorbent regeneration unit that reacts the carbonate aqueous solution with a regeneration reactant to regenerate the absorbent and generate a precipitate; an onboard storage unit that separates the sediment and stores it onboard; and greenhouse gas emission reduction devices for ships, including:

2. The onboard storage unit includes:

2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the sediment is separated, dried, atomized, and stored on board the ship.

3. The onboard storage unit includes: filtering a turbid liquid obtained by mixing the precipitate and the absorption liquid to separate the precipitate; Drying and removing the precipitate by passing hot dry air through the mixture; 3. The greenhouse gas emission reduction device for a ship according to claim 2, wherein the sediment is pulverized and atomized while being supplied with high-temperature compressed air.

4. The onboard storage unit includes: a separator including an outer wall and an internal filter, in which the turbid liquid is caused to flow between the outer wall and the internal filter to cause solid phase precipitates to accumulate between the outer wall and the internal filter, and the absorption liquid is returned to the absorption liquid circulation supply section or the absorption liquid regeneration section; an air heater that blows high-temperature dry air into the separator and dries the precipitate at a high temperature; a pulverizer comprising an inner rotating barrel and an outer rotating barrel, each having a mesh of a predetermined size, for passing the high-temperature dried sediment between the inner rotating barrel and the outer rotating barrel to pulverize and uniformly atomize the sediment; a sediment storage tank for storing and containing the pulverized sediment; 4. The greenhouse gas emission reduction device for a ship according to claim 3, further comprising:

5. The air heater is 5. The greenhouse gas emission reduction device for a ship according to claim 4, wherein high-temperature dry air is blown to the pulverizer.

6. The air heater is 6. The greenhouse gas emission reduction device for a ship according to claim 5, wherein the air is heated to 90 to 100 degrees Celsius before being supplied.

7. 5. The greenhouse gas emission reduction device for a ship according to claim 4, wherein, when separation of the sediment and high-temperature drying in the separator are completed, the separator removes sediment adhering to the outer surface of the internal filter and discharges it to the pulverizer.

8. 8. The greenhouse gas emission reduction device for a ship according to claim 7, wherein compressed air is caused to flow through the separator to remove the sediment.

9. 8. The greenhouse gas emission reduction device for a vessel according to claim 7, wherein the sediment is removed through a contracting and expanding structure of the internal filter.

10. 5. The greenhouse gas emission reduction device for a ship according to claim 4, further comprising a filter that captures dust generated during pulverization by the pulverizer, or a cyclone dust collector that collects the dust, and the collected powder or the collected powder is supplied to the sediment storage tank.

11. the precipitate comprises carbonate; The absorption liquid is a monovalent alkali aqueous solution, and may be an aqueous solution of LiOH, NaOH, KOH, or NH ４ 5. The greenhouse gas emission reduction device for a ship according to claim 4, wherein the greenhouse gas emission reduction device for a ship includes any one of an aqueous solution of OH.

12. Further including a seawater supply unit that supplies seawater from outside the ship; The seawater supply unit includes: a seawater pump that receives the seawater from outside the ship through a sea chest and pumps it into the absorption tower; a seawater control valve that adjusts the injection amount of the seawater supplied from the seawater pump to the absorption tower in accordance with the amount of exhaust gas; 2. The greenhouse gas emission reduction device for a ship according to claim 1, further comprising:

13. The exhaust gas cooling section 13. The greenhouse gas emission reduction device for a ship according to claim 12, wherein exhaust gas discharged from the ship engine is cooled by reacting it with the seawater supplied from the seawater supply unit.

14. The exhaust gas cooling section 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the exhaust gas discharged from the ship engine is cooled by reacting it with fresh water.

15. The exhaust gas cooling section 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the exhaust gas is cooled by circulating fresh water provided from a cooling system on board the ship through a heat exchange piping surrounding the exhaust gas discharge pipe.

16. 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the exhaust gas cooling unit is provided inside the absorption tower.

17. The absorption liquid circulation supply unit an absorption liquid storage tank that stores the absorption liquid; an absorbent pump that pumps and transfers the absorbent from the absorbent storage tank; an absorption liquid circulation tank that mixes and stores the carbonate aqueous solution discharged from the absorption tower and the absorption liquid supplied from the absorption liquid pump; The absorption liquid is transferred from the absorption liquid circulation tank to the CO ２ an absorbent circulation pump for supplying and circulating the absorbent to the upper stage of the removal section; 2. The greenhouse gas emission reduction device for a ship according to claim 1, further comprising:

18. The absorption liquid pump The greenhouse gas emission reduction device for a ship according to claim 17, characterized in that the absorbing liquid is supplied to the absorbing liquid circulation tank so as to make up for a shortage of the absorbing liquid discharged to the onboard storage section.

19. The absorption liquid is 18. The greenhouse gas emission reduction device for a ship according to claim 17, wherein seawater and fresh water are produced by electrolysis and stored in the absorption liquid storage tank.

20. a seawater supply unit that supplies seawater from outside the ship, the exhaust gas cooling unit being provided inside the absorption tower; The absorption tower comprises: The exhaust gas cooling unit further includes a SOx absorption unit that reacts the exhaust gas with the seawater supplied from the seawater supply unit to cool the exhaust gas and dissolves and removes SOx, The CO ２ The removal section is The exhaust gas from which SOx has been removed by cooling is reacted with the absorbing solution from the absorbing solution circulating supply unit to convert it into a carbonate aqueous solution, thereby CO ２ 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the greenhouse gas is collected.

21. Further including a seawater supply unit that supplies seawater from outside the ship; The absorption tower comprises: Further comprising a NOx absorption section that absorbs and removes NOx from the exhaust gas, the exhaust gas cooling unit is provided inside the absorption tower, and cools the exhaust gas from which NOx has been removed by reacting it with the seawater supplied from the seawater supply unit; The CO ２ The removal section is The cooled exhaust gas is reacted with the absorbing solution from the absorbing solution circulation supply unit to convert it into a carbonate aqueous solution, thereby CO ２ 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the greenhouse gas is collected.

22. Further including a seawater supply unit that supplies seawater from outside the ship; the exhaust gas cooling unit is provided inside the absorption tower, The absorption tower comprises: a NOx absorption section that absorbs and removes NOx from exhaust gas; an SOx absorption unit as the exhaust gas cooling unit that reacts the exhaust gas from which the NOx has been removed with the seawater supplied from the seawater supply unit to cool the exhaust gas while dissolving and removing SOx; The exhaust gas from which SOx has been removed by cooling is reacted with the absorbing solution from the absorbing solution circulating supply unit to convert it into a carbonate aqueous solution, which is then collected and CO ２ The CO ２ 2. The greenhouse gas emission reduction device for a vessel according to claim 1, wherein the removal portions are formed by stacking them in order.

23. 23. The greenhouse gas emission reduction device for a ship according to claim 21 or 22, wherein the NOx absorption section includes an SCR.

24. The absorption liquid regeneration unit a regeneration reactant storage tank for storing the regeneration reactant; a transfer pump that pumps and transfers the carbonate aqueous solution; a mixing tank for mixing and reacting the regenerated reactant with the carbonate aqueous solution to regenerate the absorption solution, generating solid carbonate, and returning the regenerated absorption solution to the absorption tower; 2. The greenhouse gas emission reduction device for a ship according to claim 1, further comprising:

25. The regeneration reactant is 25. The greenhouse gas emission reduction device for a ship according to claim 24, characterized in that it contains a divalent metal oxide or a divalent metal hydroxide.

26. a wash water tank for storing wash water discharged from the absorption tower; a filtering unit for adjusting the turbidity of the wash water transferred from the wash water tank so that the water meets the overboard discharge requirements; a water treatment device including a neutralizing agent injection unit for pH adjustment; a wash water treatment section including a sludge storage tank for separate storage of solid effluent; 2. The vessel greenhouse gas emission reduction device according to claim 1, further comprising:

27. 27. A greenhouse gas emission reduction device for a ship as described in claim 26, further comprising a seawater supply unit that supplies seawater from outside the ship, and when the cleaning water that has been treated in the water treatment device is discharged overboard, the cleaning water is dissolved or diluted in the seawater supplied from the seawater supply unit and then discharged.

28. The cleaning water treatment unit includes: The greenhouse gas emission reduction device for a ship according to claim 26, further comprising a fresh water cooler that cools the seawater supplied from the seawater supply unit into cooled fresh water.

29. The exhaust gas cooling section At least a portion of the exhaust gas discharged from the marine engine is branched and cooled; The CO ２ The removal section is The cooled exhaust gas is reacted with the absorption liquid to produce CO ２ is converted into a carbonate solution and CO ２ 2. The greenhouse gas emission reduction device for a ship according to claim 1, wherein the greenhouse gas is collected.

30. 30. The greenhouse gas emission reduction device for a ship according to claim 29, further comprising a blower means for supplying at least a portion of the branched exhaust gas to the exhaust gas cooling section.

31. 31. The greenhouse gas emission reduction device for a vessel according to claim 30, wherein the air blowing means is a blower.

32. Residual exhaust gas that is not branched to the exhaust gas cooling section among exhaust gases discharged from the marine engine is discharged through a main exhaust pipe, The at least part of the exhaust gas that is branched to the exhaust gas cooling section is ２ 30. The greenhouse gas emission reducing device for a vessel according to claim 29, wherein the collected greenhouse gas is discharged by joining the main exhaust pipe or by a separate exhaust pipe.

33. The sediment storage tank comprises:

5. The greenhouse gas emission reduction device for a ship according to claim 4, wherein the device has an openable structure for loading and unloading sediments contained therein, or a structure that can be separated from the ship's deck for loading and unloading.

34. The air heater is 5. The greenhouse gas emission reduction device for a ship according to claim 4, wherein the air is heated using waste heat from exhaust gas discharged from the ship engine.

35. A ship or marine structure equipped with the greenhouse gas emission reduction device for a ship according to any one of claims 1 to 22.

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