Fuel processing system and ship having same

Abstract

A fuel processing system of the present invention comprises: a fuel supply room provided in a hull and having multiple devices arranged to supply toxic fuel to a demand point; a dissolving unit for dissolving the toxic fuel by spraying a hazard-mitigation material to a purging material or a leakage material containing the toxic fuel; a hazard-mitigation seal unit provided under the dissolving unit to store the hazard-mitigation material and dissolve the toxic fuel in the stored hazard-mitigation material; and a wastewater tank for storing wastewater in which the toxic fuel is dissolved in the hazard-mitigation material, wherein the dissolving unit, the hazard-mitigation seal unit, and the wastewater tank are integrally formed in a vertical direction, and the hazard-mitigation seal unit and the wastewater tank are arranged such that one surface of the hazard-mitigation seal unit and one surface of the wastewater tank share a sidewall of the fuel supply room.

Description

Fuel processing system and vessel equipped therewith

[0001] The present invention relates to a fuel processing system and a ship equipped with the same.

[0002] The IMO has decided that ships ordered after 2030 must reduce their carbon emissions by 40% compared to ships ordered in 2008, and by 50% by 2050. This is increasing the need for alternative fuels. Consequently, ammonia, a carbon-free fuel, is attracting global attention.

[0003] In order to meet the EEDI regulations being implemented to reduce greenhouse gas emissions from ships, ships have been made more efficient primarily through technological means such as larger ships and more efficient ship models and propulsion systems. However, many technological measures have already been implemented, and expectations for further reductions in greenhouse gas emissions from ships are not high.

[0004] Operational measures include greenhouse gas reduction measures. Since a ship's fuel consumption increases sharply with speed, slow sailing is one of the most effective ways to reduce carbon dioxide emissions. The shipping industry has already been reducing vessel speeds to conserve fuel, and the effectiveness of slow sailing has been well-documented.

[0005] However, slow ship operation reduces the cargo capacity per vessel, necessitating the deployment of additional vessels to ensure timely delivery, increasing investment costs for shipping companies. Furthermore, operating at speeds below the minimum engine load level can negatively impact engines, and the degree to which engine load can be reduced is limited, making complete decarbonization impossible.

[0006] Another way to reduce carbon emissions from ships is to use alternative fuels with lower carbon dioxide emissions. LNG fuel, in particular, is attracting attention as a next-generation clean marine fuel, as it meets the 2020 sulfur regulations and reduces fine dust and carbon dioxide emissions.

[0007] Previously, boil-off gas generated from LNG carriers was used as the main fuel for ships, but as the environmental friendliness of LNG is highlighted, cases of using LNG as fuel in ships other than LNG carriers are increasing.

[0008] However, LNG, as a fossil fuel, inherently emits carbon dioxide, limiting its ability to achieve complete decarbonization (approximately a 20% reduction is possible). Therefore, despite technological and operational measures, replacing ship fuel with carbon-neutral fuels is essential for the long-term complete decarbonization of shipping.

[0009] Representative carbon-neutral fuels include biodiesel, biogas, methanol, hydrogen, and ammonia. Among them, ammonia is easy to store and transport, can be mass-produced through the Haber-Bosch process, and has superior economic feasibility compared to other carbon-neutral fuels, so research and development are actively being conducted to use ammonia as a fuel.

[0010] While ammonia offers advantages as a carbon-neutral fuel, its chemical properties present handling challenges. For example, in the case of ammonia fuel-propelled vessels, ammonia fuel leaks can pose safety risks to crew members due to toxicity. Because ammonia is released into the air in gaseous form, not only is significant respiratory distress expected, but fire risk from ammonia gas must also be addressed, necessitating the safe handling of ammonia fuel leaks.

[0011] The present invention was created to solve the problems of the prior art as described above, and the purpose of the present invention is to provide a fuel treatment system that can safely treat leaked toxic fuel such as ammonia when the fuel leaks, and a ship equipped with the same.

[0012] A fuel treatment system according to one aspect of the present invention comprises: a fuel supply room provided on a hull, wherein a plurality of pieces of equipment for supplying toxic fuel to a demander are arranged; a dissolution unit for dissolving the toxic fuel by spraying a disaster prevention material onto a purging material or a leak material containing the toxic fuel; a disaster prevention seal unit provided below the dissolution unit for storing the disaster prevention material and dissolving the toxic fuel in the stored disaster prevention material; and a wastewater tank for storing wastewater in which the toxic fuel is dissolved in the disaster prevention material, wherein the dissolution unit, the disaster prevention seal unit, and the wastewater tank are formed integrally in a vertical direction, and the disaster prevention seal unit and the wastewater tank are provided such that one surface shares a side wall of the fuel supply room.

[0013] Specifically, the fuel processing system may further include a disaster prevention material supply unit that supplies the disaster prevention material to the dissolution unit and the disaster prevention seal unit through a disaster prevention material supply line; a toxic fuel inflow unit that introduces the toxic fuel into one of the dissolution unit and the disaster prevention seal unit through a toxic fuel inflow line; and a vent mast provided in front of the fuel supply room and discharging the toxic fuel into the atmosphere through a first toxic fuel vent line; the dissolution unit may include a space that accommodates the toxic fuel and the disaster prevention material; and a disaster prevention material injection unit provided on an upper portion of the space and injects the disaster prevention material supplied through the disaster prevention material supply line into the space to dissolve the toxic fuel; the disaster prevention seal unit may include a disaster prevention material storage tank that stores the disaster prevention material; and a toxic fuel injection unit provided on a bottom portion of the disaster prevention material storage tank and injects the toxic fuel introduced through the toxic fuel inflow line into the disaster prevention material to dissolve it.

[0014] Specifically, the fuel processing system may further include a toxic substance supply valve provided on the toxic substance supply line; a first venting control valve provided on the first toxic fuel vent line; and a concentration measuring sensor provided on the first toxic fuel vent line upstream of the first venting control valve, the concentration measuring sensor measuring the concentration of the toxic fuel vented through the first toxic fuel vent line and controlling the toxic substance supply valve and the first venting control valve.

[0015] Specifically, the concentration measuring sensor opens the disaster prevention material supply valve and closes the first venting control valve when the concentration of the toxic fuel vented through the first toxic fuel vent line exceeds a set stable concentration, and closes the disaster prevention material supply valve and opens the first venting control valve when the concentration of the toxic fuel vented through the first toxic fuel vent line is lower than or equal to the set stable concentration, and the internal pressure of the dissolution unit and the disaster prevention seal unit is controlled by a pressure valve, and the pressure valve is a pressure reducing valve, and when the concentration of the toxic fuel vented through the first toxic fuel vent line exceeds the set stable concentration and the first venting control valve is closed by the concentration measuring sensor, the internal pressure of the dissolution unit and the disaster prevention seal unit rises to a set value or more, thereby gradually releasing the pressure.

[0016] Specifically, the fuel treatment system comprises: a second toxic fuel vent line having one end connected to the wastewater tank and the other end connected to the first toxic fuel vent line, for venting toxic fuel vaporization gas generated inside the wastewater tank; a second venting control valve provided on the second toxic fuel vent line; a third toxic fuel vent line having one end connected to the wastewater tank and the other end connected to the toxic fuel inlet line, for venting toxic fuel vaporization gas generated inside the wastewater tank; And further comprising a third venting control valve provided on the third toxic fuel vent line, wherein the concentration measuring sensor can close the second venting control valve and open the third venting control valve when the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line exceeds a set stable concentration, and can open the second venting control valve and close the third venting control valve when the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line is lower than the set stable concentration.

[0017] A fuel treatment system according to another aspect of the present invention comprises: a bunkering unit provided on a hull and connected to an external facility for transporting toxic fuel; a drip tray unit provided on the bunkering unit for collecting the toxic fuel leaking from the bunkering unit; and a toxic fuel treatment unit for treating the toxic fuel collected in the drip tray unit with a disaster prevention material and then storing the same in a ballast tank located below the drip tray unit.

[0018] Specifically, the toxic fuel treatment unit may include a first disaster prevention material injection unit provided above the drip tray unit and injecting the disaster prevention material into the bunkering unit where the toxic fuel leaks; a disaster prevention material supply unit that supplies the disaster prevention material to the first disaster prevention material injection unit through a disaster prevention material supply line; a disaster prevention material supply valve provided on the disaster prevention material supply line; a first wastewater drain line that drains wastewater temporarily stored in the drip tray unit by dissolving the toxic fuel in the disaster prevention material into the ballast tank; a first wastewater drain valve provided on the first wastewater drain line; and a leak detection sensor that detects the toxic fuel in the bunkering unit.

[0019] Specifically, the leak detection sensor, when the toxic fuel is detected, can open the disaster prevention material supply valve to allow the disaster prevention material to be sprayed through the first disaster prevention material spray unit, and can open the first wastewater drain valve to allow the wastewater to be stored in the ballast tank.

[0020] Specifically, the fuel treatment system includes a hold space provided to surround a cargo tank provided inside the hull; and a bilge well provided in the hull, and the toxic fuel treatment unit further includes a second wastewater drain line for draining the wastewater, in which the toxic fuel is dissolved in the disaster prevention material and temporarily stored in the drip tray, into the bilge well; and a second wastewater drain valve provided on the second wastewater drain line, wherein the second wastewater drain valve can be opened when the toxic fuel is detected by the leak detection sensor to allow the wastewater to be stored in the bilge well.

[0021] Specifically, the fuel treatment system may further include a pressure control unit provided on the hull and operated to discharge the leaked toxic fuel to the outside when the toxic fuel leaks from the cargo tank storing the toxic fuel into the hold space and the internal pressure of the hold space increases, thereby controlling the internal pressure of the hold space; and a wastewater storage unit provided on the hull, wherein the toxic fuel treatment unit may further include a second disaster prevention material injection unit provided to surround the periphery of the pressure control unit and inject the disaster prevention material toward the pressure control unit when the pressure control unit is operated; a water barrier for guiding the wastewater in which the toxic fuel is dissolved in the disaster prevention material to flow down the outer side plating of the hull; and a fourth wastewater drainage line for draining the wastewater induced through the water barrier to the wastewater storage unit.

[0022] According to another aspect of the present invention, a fuel treatment system is provided on a hull and includes: a toxic fuel treatment unit for treating toxic fuel with a disaster prevention substance; a wastewater storage unit for receiving and storing wastewater in which the toxic fuel is dissolved in the disaster prevention substance from the toxic fuel treatment unit; and an overboard discharge unit for discharging the wastewater to the outside, wherein the overboard discharge unit is connected to the wastewater storage unit and uses a flow for discharging a separate disaster prevention substance to the outside to suck in the wastewater stored in the wastewater storage unit and discharge it to the outside.

[0023] Specifically, the wastewater storage unit may include a wastewater inflow line connected to the toxic fuel treatment unit and receiving the wastewater from the toxic fuel treatment unit; an evaporation gas discharge line for transmitting toxic fuel evaporation gas generated from the wastewater stored in the wastewater storage unit to the toxic fuel treatment unit; and a wastewater transfer line provided at a lower portion of the wastewater storage unit and transferring the wastewater stored in the wastewater storage unit to another storage unit.

[0024] Specifically, the overboard discharge unit may include an eductor; a wastewater discharge line that is connected to a side of the eductor and is drawn from the inside of the wastewater storage unit to the outside of the wastewater storage unit and discharges the wastewater from the wastewater storage unit to the outside; a suppression water supply line that is provided in a fire suppression unit that suppresses a fire occurring in the hull and is connected to an inlet of the eductor and supplies seawater; a mixture discharge line that is connected to an outlet of the eductor and discharges a mixture of the wastewater sucked into the eductor through the wastewater discharge line and the seawater introduced into the eductor through the suppression water supply line into the sea; a wastewater discharge valve provided on the wastewater discharge line; and a suppression water supply valve provided on the suppression water supply line.

[0025] Specifically, the fuel treatment system further includes a bunkering unit provided on the hull and connected to an external facility for transporting the toxic fuel; a drip tray unit provided on the bunkering unit for collecting the toxic fuel leaking from the bunkering unit; and a toxic fuel treatment unit for collecting the toxic fuel collected in the drip tray unit and treating it with the disaster prevention substance, wherein the overboard discharge unit is connected to the drip tray unit and can suck up wastewater temporarily stored in the drip tray unit by dissolving the toxic fuel in the disaster prevention substance using a flow that discharges a separate disaster prevention substance to the outside and discharge it to the outside.

[0026] Specifically, the toxic fuel treatment unit may include a disaster prevention material injection unit provided above the drip tray unit and injecting the disaster prevention material into the bunkering unit where the toxic fuel leaks; a disaster prevention material supply unit that supplies the disaster prevention material to the disaster prevention material injection unit through a disaster prevention material supply line; a disaster prevention material supply valve provided on the disaster prevention material supply line; and a leak detection sensor that detects the toxic fuel in the bunkering unit and, when the toxic fuel is detected, opens the disaster prevention material supply valve to inject the disaster prevention material through the disaster prevention material injection unit.

[0027] The fuel treatment system according to the present invention and the vessel equipped with the same can safely treat the leaked toxic fuel, such as ammonia, when the toxic fuel leaks, thereby ensuring the safety of the crew.

[0028] FIG. 1 is a side view illustrating a vessel equipped with a fuel processing system according to embodiments of the present invention.

[0029] FIG. 2 is a cross-sectional view of a portion of a ship equipped with a fuel processing system according to embodiments of the present invention, in which a bunkering section is provided.

[0030] Figure 3 (a) is a cross-sectional view of a topside wing tank provided in a bunkering section, and Figure 3 (b) is a cross-sectional view of a topside wing tank provided around the bunkering section.

[0031] FIG. 4 is a drawing for explaining a fuel processing system according to the first embodiment of the present invention.

[0032] Figure 5 is a drawing for explaining the mixing unit of Figure 4.

[0033] FIG. 6 is a drawing for explaining a fuel processing system according to a second embodiment of the present invention.

[0034] FIG. 7 is a drawing for explaining a fuel processing system according to a third embodiment of the present invention.

[0035] FIGS. 8 to 11 are drawings for explaining various embodiments of a fuel processing system according to a fourth embodiment of the present invention.

[0036] Figure 12 is a drawing for explaining the toxic fuel reduction unit of Figure 10.

[0037] FIGS. 13 to 16 are drawings for explaining various embodiments of a fuel processing system according to a fifth embodiment of the present invention.

[0038] FIGS. 17 and 18 are drawings for explaining various embodiments of a fuel processing system according to a sixth embodiment of the present invention.

[0039] FIG. 19 is a drawing for explaining a fuel processing system according to the seventh embodiment of the present invention.

[0040] FIG. 20 is a drawing for explaining a fuel processing system according to the eighth embodiment of the present invention.

[0041] The purpose, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments, taken in conjunction with the accompanying drawings. In this specification, when reference numerals are assigned to components in each drawing, it should be noted that, where possible, identical components are assigned the same reference numerals even if they appear in different drawings. Furthermore, in describing the present invention, if a detailed description of a related known technology is deemed to unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

[0042] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0043] FIG. 1 is a side view illustrating a ship equipped with a fuel processing system according to embodiments of the present invention, FIG. 2 is a cross-sectional view of a portion where a bunkering section is provided in a ship equipped with a fuel processing system according to embodiments of the present invention, FIG. 3 (a) is a cross-sectional view of a topside wing tank provided in the bunkering section, and FIG. 3 (b) is a cross-sectional view of a topside wing tank provided around the bunkering section.

[0044] Referring to Fig. 1, a ship (1) is a ship propelled by toxic fuel, which may be an ammonia carrier, but is not limited thereto and may encompass all ships propelled by toxic fuel, such as LNG carriers, container carriers, and crude oil carriers.

[0045] In the above, the toxic fuel may be ammonia.

[0046] In this embodiment, the case where the toxic fuel is ammonia is described, but it is not limited thereto and may encompass all substances that are toxic and are used as propulsion fuel for a ship (1).

[0047] A ship (1) may include a hull (2), a cargo tank (3), an engine room (4), a demand location (5), a cabin (6), a fuel supply room (7), a vent section (8), a vent mast (9), a bunkering section (10), a drip tray section (11), a ballast tank (12), and a hold space (13), and may include various other configurations in addition to these configurations.

[0048] In the following specification, front or rear means front or rear in the longitudinal direction (longitudinal direction) of the hull (2), and left or right means left (port) or right (starboard) in the width direction (transverse direction) of the hull (2).

[0049] The hull (2) forms the exterior of a ship (1) propelled by toxic fuel.

[0050] When viewed transversely, the hull (2) has an upper deck (21) at the top, a bow (22) at the front, and a stern (23) at the rear in the longitudinal direction. In addition, the hull (2) has side panels (25) at both left and right sides, and the lower part can be defined as the bottom (24).

[0051] In addition, the hull (2) may be provided with multiple cargo tanks (3) inside the ship. As shown in Fig. 1, four cargo tanks (3) may be provided inside the hull (2), but the present invention is not limited thereto.

[0052] The engine room (4) can be provided at the rear of the hull (2).

[0053] The engine room (4) forms an internal space by an upper deck (21) forming the upper surface, a bottom deck (not shown in the drawing symbol) forming the lower surface, a front bulkhead, a rear bulkhead, and side bulkheads, and at least one intermediate deck (not shown) is provided between the upper deck (21) and the bottom deck to form a multi-layer deck structure.

[0054] A cabin (6) and an engine casing (not shown in the drawing) can be placed on the upper deck (21) forming the upper surface of the engine room (4).

[0055] The demand source (5) can be provided inside the engine room (4).

[0056] The demand source (5) may include a main engine (51) operated at high pressure, such as a propulsion engine, and a power generation engine (52) operated at low pressure, such as a power generation engine.

[0057] These demand sources (5) can generate energy using toxic fuels.

[0058] Toxic fuel used as fuel at the demand site (5) can be stored in a fuel tank (not shown) or a cargo tank (3). If the ship (1) is an ammonia carrier, ammonia stored in the cargo tank (3) can be used as fuel at the demand site (5), so there is no need to prepare a separate fuel tank.

[0059] The cabin (6) is where the crew resides and can be provided on the upper deck (21) of the stern (23). In this embodiment, the cabin (6) is described as being provided in the stern (23) section, but is not limited thereto.

[0060] A fuel supply room (7) is provided in the hull (2), and multiple pieces of equipment can be placed to supply toxic fuel in a controlled manner according to the requirements of the demander (5).

[0061] The fuel supply room (7) may be provided on the upper deck (21) at the rear of the cabin (6). In the case of a ship (1) in which a trunk deck (not shown) is provided on the upper deck (21), it may be provided on the trunk deck.

[0062] The vent section (8) is provided at the upper part of the fuel supply room (7) and can be configured to discharge the internal air of the fuel supply room (7) into the atmosphere.

[0063] A vent mast (9) can be provided to correspond to multiple cargo tanks (3) at the front of the fuel supply room (7) and can discharge the vent target material into the atmosphere.

[0064] The vent mast (9) is generally provided to correspond to each of the plurality of cargo tanks (3), but as shown in the drawing of the present embodiment, two of them may be provided side by side in front of the fuel supply room (7) on the cargo tank (3) in which the fuel supply room (7) is provided. At this time, one of the two vent masts (9) may be configured to discharge the vent target substance generated in the cargo tank (3) arranged adjacent to the front of the cargo tank (3) into the atmosphere.

[0065] The bunkering unit (10) is provided on the hull (2) and connected to external equipment, and can be configured to transport toxic fuel to a cargo tank (3) or a fuel tank.

[0066] The bunkering section (10) can be partitioned in the middle part of the upper deck (21).

[0067] In the bunkering section (10), not only a manifold (101) and related components for implementing loading or unloading of toxic fuel, but also other components provided on the corresponding ship (1) can be installed.

[0068] The bunkering section (10) may include an upper deck (21) of the hull (2) in which a manifold (101) for transporting toxic fuel is provided by being connected to an external facility, and a recessed deck (102) that is sunken into the upper deck (21).

[0069] The recess deck (102) has a vertical portion (1021) bent at both ends of the upper deck (21) and a horizontal portion (1022) extending from the lower end of the vertical portion (1021) toward the side shell plating (25) of the hull (2), so that the side cross-section can form an 'L' shape.

[0070] In this embodiment, the bunkering section (10) is described as being formed of a recessed deck (102), but it is also possible to include a case where the recessed deck (102) is omitted and formed of only an upper deck (21).

[0071] A drip tray (11) is provided in the bunkering section (10) and can capture toxic fuel leaking from the bunkering section (10).

[0072] The drip tray (11) can be provided on the horizontal portion (1022) of the recess deck (102).

[0073] The ballast tank (12) is installed on the side shell (25) and the bottom (24) to maintain the balance of the ship (1). In this embodiment, the ballast tank (12) is described as a topside wing tank (12).

[0074] The topside wing tank (12) can be provided at the point where the upper end of the side plate (25) and the side end of the upper deck (21) meet, and can have a shape with a cross section of approximately a triangle.

[0075] Such a topside wing tank (12) can be separated into an upper topside wing tank (121) and a lower topside wing tank (122) in the bunkering section (10) as shown in (a) of FIG. 3, when the bunkering section (10) is formed of a recessed deck (102), and can form a triangle as a whole around the bunkering section (10) as shown in (b) of FIG. 3.

[0076] The upper topside wing tank (121) may have an upper surface formed of an upper deck (21) and an outer surface formed of an inner longitudinal bulkhead of a recessed deck (102).

[0077] The lower topside wing tank (122) may have an upper surface formed by a horizontal portion (1022) of a recessed deck (102) and an outer surface formed by a side plate (25).

[0078] At this time, the camber angle of the upper deck (21) forming the upper surface of the upper topside wing tank (121) and the camber angle of the horizontal portion (1022) of the recess deck (102) forming the upper surface of the lower topside wing tank (122) may be the same.

[0079] The hold space (13) can be arranged to surround the cargo tank (3) provided inside the hull (2) and serves as a secondary enclosure.

[0080] Additionally, the ship (1) may include a bilge well (drawing symbol 14 of FIG. 14) that collects contaminated water, etc. and discharges it overboard.

[0081] The vessel (1) configured as described above may leak toxic fuel as it uses toxic fuel, and the leaked toxic fuel needs to be safely disposed of. Accordingly, referring again to FIGS. 1 to 3 described above, various fuel processing systems (10a, 20b, 30c, 40d, 50e, 60f, 70g, 80h) for safely processing toxic fuel will be described in detail through the first to eighth embodiments illustrated in FIGS. 4 to 20.

[0082]

[0083] FIG. 4 is a drawing for explaining a fuel processing system according to a first embodiment of the present invention, and FIG. 5 is a drawing for explaining a mixing unit of FIG. 4.

[0084] Referring to FIG. 4, a fuel processing system (10a) according to the first embodiment of the present invention is provided in a hull (2) and may include a fuel processing area (11a) for processing toxic fuel and a fire suppression unit (12a) for suppressing a fire occurring in the fuel processing area (11a).

[0085] Here, the hull (2) may include an engine room (4) provided on the stern (23) side of the hull (2) that accommodates a main engine (51) and a power generation engine (52) that generate energy by consuming toxic fuel as described above, and a fuel supply room (7) in which a plurality of pieces of equipment for supplying toxic fuel to the main engine (51) and the power generation engine (52) are arranged.

[0086] In the above, the fuel processing area (11a) may be an engine room (4) or a fuel supply room (7).

[0087] In the above, the fire suppression unit (12a) may include a fire extinguishing material supply unit (12a1) and a spray unit (12a2).

[0088] The evolution material supply unit (12a1) can supply evolution material that chemically reacts with toxic fuel to form crystals.

[0089] The evolution material supply unit (12a1) may include a high-pressure tank that stores evolution material at high pressure.

[0090] The injection unit (12a2) can inject the evolution material supplied from the evolution material supply unit (12a1) into the fuel processing area (11a).

[0091] The injection unit (12a2) may include a sprinkler.

[0092] Additionally, the fire suppression unit (12a) may further include a neutralizing material supply unit (12a3).

[0093] The neutralizing material supply unit (12a3) can be provided on the fire suppression line (10aL1) connecting the extinguishing material supply unit (12a1) and the spray unit (12a2), and the neutralizing material can be mixed with the extinguishing material and supplied to the spray unit (12a2).

[0094] This neutralizing material supply unit (12a3) may include a mixing unit (12a31), a neutralizing material storage tank (12a32), an on-off valve (10aV), and a pressure sensor (10aS).

[0095] The mixing unit (12a31) can be provided on the fire suppression line (10aL1), and can mix the extinguishing material and the neutralizing material and supply the mixture to the spray unit (12a2).

[0096] The neutralizing material storage tank (12a32) can store neutralizing material to be supplied to the mixing unit (12a31).

[0097] The opening / closing valve (10aV) may be provided on the neutralizing material supply line (10aL2) connecting the mixing unit (12a31) and the neutralizing material storage tank (12a32).

[0098] A pressure sensor (10aS) can be provided in a fire suppression line (10aL1) upstream of a mixing unit (12a31), and can detect the pressure of the fire extinguishing material ejected from the fire extinguishing material supply unit (12a1) to operate an opening / closing valve (10aV).

[0099] In the above, the fire suppression line (10aL1) may include a fire suppression material supply line (10aL11) connecting the fire suppression material supply unit (12a1) and the mixing unit (12a31) and a mixture material supply line (10aL12) connecting the mixing unit (12a31) and the injection unit (12a2).

[0100] Referring to FIG. 5, the mixing unit (12a31) may include a mixing chamber (12a311), a suction pipe (12a312), an inlet pipe (12a314), and an outlet pipe (12a317).

[0101] The mixing chamber (12a311) can mix the evolved substance introduced through the inlet pipe (12a314) and the neutralized substance sucked through the suction pipe (12a312), and can eject the mixed substance at high speed through the outlet pipe (12a317).

[0102] The suction pipe (12a312) may be connected to the neutralizing material supply line (10aL2) at one side of the mixing chamber (12a311). The suction pipe (12a312) may be connected to the neutralizing material supply line (10aL2) so that a suction port (12a313) through which the neutralizing material is sucked may be provided.

[0103] The inlet pipe (12a314) is connected to the extinguishing material supply line (10aL11) at the front side of the mixing chamber (12a311) and is composed of an inlet (12a315) through which the extinguishing material is introduced, and a nozzle (12a316) whose diameter is reduced compared to the diameter of the inlet (12a315) inside the mixing chamber (12a311). As the extinguishing material is ejected into the mixing chamber (12a311) at high speed through the nozzle (12a316), a pressure difference is generated so that the neutralizing material can be sucked into the mixing chamber (12a311).

[0104] The outlet pipe (12a317) may be connected to the mixture supply line (10aL12) at the rear side of the mixing chamber (12a311). The outlet pipe (12a317) may be connected to the mixture supply line (10aL12) so that an outlet (12a318) through which the mixture in the mixing chamber (12a311) flows out may be provided.

[0105] The above-mentioned mixing unit (12a31) may be an ejector, but is not limited thereto, and may include another device capable of ejecting a mixture of a flammable substance and a neutralizing substance at high speed and supplying it to the injection unit (12a2).

[0106] In a first embodiment, the toxic fuel may be ammonia and the extinguishing agent may be carbon dioxide.

[0107] These ammonia and carbon dioxide react chemically to form ammonium carbonate crystals, and fire can be extinguished by these ammonium carbonate crystals.

[0108] However, ammonium carbonate series crystals are corrosive substances and have the disadvantage of corroding equipment or hulls (2) provided in the fuel processing area (11a).

[0109] Accordingly, the fuel processing system (10a) according to the first embodiment is configured to mix a neutralizing agent with a fire extinguishing agent through a neutralizing agent supply unit (12a3) and use it to extinguish a fire.

[0110] The neutralizing agent may be any one of sodium chloride, potassium chloride, and sodium citrate.

[0111] A mixture of any one of sodium chloride, potassium chloride, and sodium citrate and carbon dioxide, which is an evolutionary agent, can inhibit the production of ammonium carbonate series substances formed by the chemical reaction of ammonia and carbon dioxide.

[0112] Accordingly, the fuel processing system (10a) according to the first embodiment can efficiently suppress a fire while preventing corrosion of equipment or the hull (2) provided in the fuel processing area (11a).

[0113]

[0114] FIG. 6 is a drawing for explaining a fuel processing system according to a second embodiment of the present invention.

[0115] Referring to FIG. 6, a fuel processing system (20b) according to a second embodiment of the present invention may include a fuel supply room (7) provided in a hull (2) and having a plurality of equipment for supplying toxic fuel to a demander (5) arranged therein, a vent part (8b) provided at an upper portion of the fuel supply room (7) and discharging internal air of the fuel supply room (7) into the atmosphere, and a vent mast (9) provided at a front portion of the fuel supply room (7) and discharging a vent target substance into the atmosphere through a vent head (91).

[0116] Here, the hull (2) may include an engine room (4) provided on the stern (23) side of the hull (2) to accommodate a demand source (5) that generates energy by consuming toxic fuel as described above, and a cabin (6) provided on the upper deck (21) above the engine room (4).

[0117] In the second embodiment, the toxic fuel may be ammonia, and the vent target material discharged through the vent head (91) may include a material mixed with ammonia.

[0118] In the above, the vent part (8b) may include a vent fan (8b1), a gas sensor (8bS1), and a vent guide (8b2).

[0119] The ventilation fan (8b1) may be configured with a tubular body extending a certain length upward from the fuel supply room (7), with the inlet positioned inside the fuel supply room (7) and the outlet positioned outside the fuel supply room (7), a ventilation fan installed inside the body, and a motor that rotates the ventilation fan.

[0120] The gas sensor (8bS1) can detect toxic fuel in the vent target material discharged through the vent head (91).

[0121] The vent guide (8b2) can be installed at the outlet of the vent fan (8b1) and can guide the air discharged from the vent fan (8b1) toward the vent head (91).

[0122] That is, the vent guide (8b2) can be configured to concentrate the air discharged from the ventilator (8b1) toward the bow (22) of the vent mast (9) so that the vent target material discharged through the vent head (91) is discharged in the opposite direction to the cabin (6).

[0123] This vent section (8b) can be arranged adjacent to the vent head (91) at the top of the fuel supply room (7) so that the air discharged through the vent guide (8b2) can affect the vent mast (9).

[0124] The above-mentioned vent guide (8b2) is installed at the outlet of the body of the ventilator (8b1) and may include a vertical pipe (8b21) extending higher than the vent head (91), which is at least the upper end of the vent mast (9), and a horizontal pipe (8b22) bent from the vertical pipe (8b21) toward the vent head (91).

[0125] The vent guide (8b2) may be configured as an integral part of the ventilator (8b1) or may be configured to be detachable from the ventilator (8b1).

[0126] In the above, when the gas sensor (8bS1) detects toxic fuel in the vent target material discharged through the vent head (91), it can forcibly operate the motor of the vent part (8b).

[0127] In addition, the vent section (8b) may further include a wind speed sensor (8bS2) that detects the wind speed from the bow (22) of the hull (2) toward the stern (23) in addition to the gas sensor (8bS1).

[0128] At this time, when the wind speed sensor (8bS2) detects toxic fuel from the gas sensor (8bS1) and the motor of the vent part (8b) is operating, if the wind speed is detected to be lower than the set wind speed, the motor can be made to maintain the normal speed, and if the wind speed is detected to be higher than the set wind speed, the motor speed can be increased to the set speed faster than the normal speed.

[0129] Here, the set wind speed can be set to at least a speed higher than the speed of air discharged toward the vent head (91) when the motor of the vent part (8b) is operating normally, and this is to prevent the vent target material discharged to the outside through the vent head (91) from coming toward the cabin (6).

[0130] The fuel processing system (20b) according to the second embodiment of the present invention comprises a vent section (8b) provided with a vent guide (8b2) that guides air discharged through a vent fan (8b1) toward a vent head (91) through which a vent target substance is discharged, thereby preventing the vent target substance containing toxic fuel from heading toward the cabin (6), thereby ensuring the safety of crew members residing in the cabin (6).

[0131]

[0132] FIG. 7 is a drawing for explaining a fuel processing system according to a third embodiment of the present invention.

[0133] Referring to FIG. 7, the fuel processing system (30c) according to the third embodiment of the present invention may include a toxic fuel zone provided in a hull (2), a plurality of equipment zones (31c) provided inside the toxic fuel zone, a passage zone (32c) provided between the plurality of equipment zones (31c), a protective material supply unit (33c) that sprays protective material at least from the lower part among the lower part and the upper part with respect to the boundary between the plurality of equipment zones (31c) and the passage zone (32c), and a respiratory material supply unit (34c) that sprays respiratory material inside the passage zone (32c).

[0134] Here, the toxic fuel area may be used to encompass all areas where toxic fuel is handled or processed, and in the third embodiment, the toxic fuel area is described as a fuel supply room (7) in which multiple pieces of equipment are arranged to supply toxic fuel to a demand source (5). The demand source (5) may be a main engine (51) and a power generation engine (52) that are installed inside an engine room (4) provided on the stern (23) side of the hull (2) and generate energy by consuming toxic fuel.

[0135] In the case where the toxic fuel area is a fuel supply room (7), the plurality of equipment may include a recovery tank (71) for recovering and storing toxic fuel, a first toxic fuel supply device (72) for supplying toxic fuel to the main engine (51), a second toxic fuel supply device (73) for supplying toxic fuel to the power generation engine (52), and a plurality of re-liquefaction units (74) for re-liquefying the toxic fuel.

[0136] Additionally, if the toxic fuel area is a fuel supply room (7), multiple pieces of equipment may also include a glycol water skid (75) that is not related to toxic fuel.

[0137] In a third embodiment, the protective material may be water, air, or a fluid that prevents equipment corrosion, and the respirable material may be fresh air.

[0138] In the above, a plurality of equipment zones (31c) may be arranged in a fuel supply room (7), which is a toxic fuel zone, and may be partitioned by grouping one or more pieces of equipment among a plurality of pieces of equipment for processing toxic fuel.

[0139] Among the multiple pieces of equipment, two or more pieces of equipment may be bundled together and have similar functions for processing toxic fuel.

[0140] For example, a plurality of equipment zones (31c) can be partitioned by grouping together a recovery tank (71) and a glycol water skid (75) arranged adjacent thereto, grouping together a first toxic fuel supply device (72) having a similar function of processing toxic fuel and a second toxic fuel supply device (73) arranged adjacent thereto, and grouping together a plurality of reliquefaction units (74) arranged adjacent to at least two of them.

[0141] In the above, the passage area (32c) may be configured to facilitate accessibility to equipment with similar functions for processing toxic fuel, among a plurality of pieces of equipment, where two or more pieces are grouped together. The passage area (32c) may be provided with at least one entrance (32c1) that allows access to the interior and exterior of the fuel supply room (7).

[0142] In the above, the protective material supply unit (33c) may include a protective material storage tank (33c1), a protective material injection unit (33c2), a protective material supply line (30cL1), a protective material pressurization unit (33c4), a valve unit (30cV1), and a gas sensor (30cS).

[0143] The protective material storage tank (33c1) can store protective material to be supplied to the protective material spray unit (33c2).

[0144] A plurality of protective material spraying units (33c2) can be provided along the boundaries of a plurality of equipment zones (31c) and passage zones (32c).

[0145] A plurality of protective material spraying units (33c2) may be provided in at least one of the lower and upper portions of the boundary between the plurality of equipment zones (31c) and the passage zone (32c).

[0146] It may be desirable to have multiple protective material spraying units (33c2) installed at the bottom of the boundary between the multiple equipment zones (31c) and the passage zone (32c) to spray the protective material. This is because the height of the fuel supply room (7) is high, the equipment from which the toxic fuel leaks is located at the bottom, and the leaked toxic fuel is in a gaseous state that moves from the bottom to the top. Therefore, spraying the protective material from the bottom to the top can not only effectively prevent the toxic fuel from spreading to the passage zone (32c), but also easily release the toxic fuel to the outside by pushing it upwards through the vent unit (8b) illustrated in FIG. 4.

[0147] The plurality of protective material spraying units (33c2) can spray protective material when toxic fuel leaks from at least one of the plurality of equipment zones (31c) to form a protective film at the boundary between the plurality of equipment zones (31c) and the passage zone (32c), thereby preventing the toxic fuel from spreading to the passage zone (32c).

[0148] The protective material supply line (30cL1) can connect a protective material storage tank (33c1) and multiple protective material spraying units (33c2).

[0149] A protective material pressurization unit (33c4) may be provided on a protective material supply line (30cL1). The protective material pressurization unit (33c4) may pressurize the protective material in the protective material storage tank (33c1) and supply it to a plurality of protective material injection units (33c2).

[0150] The valve unit (30cV1) may be provided on the protective material supply line (30cL1). The valve unit (30cV1) may supply and block the protective material.

[0151] The gas sensor (30cS) can detect toxic fuel leaking from multiple equipment areas (31c).

[0152] In the above, the protective material supply line (30cL1) may further include a plurality of branch lines (30cL11) branched from the valve unit (30cV1) and connected to a plurality of protective material injection units (33c2).

[0153] At this time, the valve unit (30cV1) may be composed of a plurality of selection valves (30cV11) provided on a plurality of branch lines (30cL11).

[0154] The plurality of selection valves (30cV11) can selectively open and close the plurality of branch lines (30cL11) depending on whether the gas sensor (30cS) detects a leak of toxic fuel, and as a result, when toxic fuel leaks in at least one of the plurality of equipment zones (31c), the protective material can be sprayed only through the protective material spraying unit (33c2) surrounding the equipment zone (31c) where the toxic fuel leaks.

[0155] In the third embodiment, the protective material supply line (30cL1) includes a plurality of branch lines (30cL11), and accordingly, the valve unit (30cV1) is described as being composed of a plurality of selection valves (30cV11) provided on the plurality of branch lines (30cL11). However, it is also possible that the protective material supply line (30cL1) is formed as one line between the protective material storage tank (33c1) and the plurality of protective material injection units (33c2), and that one selection valve (30cV11) of the valve unit (30cV1) is provided on one protective material supply line (30cL1). In this case, even if toxic fuel leaks in at least one of the multiple equipment zones (31c), the protective material is sprayed through all of the multiple protective material spraying units (33c2), so that the protective material can be sprayed even in the equipment zone (31c) where the toxic fuel does not leak.

[0156] A gas sensor (30cS) is installed in each of a plurality of equipment zones (31c), and when toxic fuel is detected in at least one of the plurality of equipment zones (31c), the protective material pressurization unit (33c4) is operated, and the selection valve (30cV11) provided on the branch line (30cL11) connected to the protective material injection unit (33c2) surrounding the corresponding equipment zone (31c) in which the toxic fuel is detected among the plurality of protective material injection units (33c2) can be opened.

[0157] The plurality of protective material spraying units (33c2) may further include an auxiliary spraying unit (33c21) provided in the corresponding equipment zone (31c) where two or more pieces of equipment are bundled among the plurality of equipment zones (31c).

[0158] The auxiliary injection unit (33c21) is connected to the corresponding protective material injection unit (33c2) provided along the boundary of the corresponding equipment area (31c) and the passage area (32c), and may be provided along the boundary of two or more pieces of equipment placed in the corresponding equipment area (31c).

[0159] When an auxiliary injection unit (33c21) is provided, the protective material supply unit (33c) may further include a three-way valve (30cV2) provided at a portion where the protective material injection unit (33c2) and the auxiliary injection unit (33c21) are connected.

[0160] The gas sensor (30cS) is installed in each of the multiple equipment zones (31c), but if the space (31c1) is further divided into multiple spaces by the auxiliary injection unit (33c21), it can be installed in each of the multiple spaces (31c1).

[0161] When a toxic fuel is detected in at least one of a plurality of spaces (31c1) partitioned within a plurality of equipment zones (31c), the gas sensor (30cS) operates the protective material pressurization unit (33c4), opens the selection valve (30cV11) provided on the branch line (30cL11) connected to the protective material injection unit (33c2) surrounding the space (31c1) where the toxic fuel is detected among the plurality of protective material injection units (33c2), and changes the direction of the three-way valve (30cV2) so that the protective material is injected only into the space (31c1) through the protective material injection unit (33c2) surrounding the space (31c1) where the toxic fuel is detected and the auxiliary injection unit (33c21) connected thereto.

[0162] In the above, the respiratory substance supply unit (34c) may include a respiratory substance storage tank (34c1), a respiratory substance injection unit (34c2), a respiratory substance supply line (30cL2), a respiratory substance pressurization unit (34c3), and an opening / closing valve (30cV3).

[0163] The respiratory substance storage tank (34c1) can store respiratory substance to be supplied to the respiratory substance injection unit (34c2).

[0164] A respiratory substance injection unit (34c2) can be provided along the passage area (32c) and can inject respiratory substances.

[0165] The respiratory substance injection unit (34c2) can inject respiratory substance when toxic fuel leaks from at least one of the plurality of equipment zones (31c) to prevent the toxic fuel from spreading from the plurality of equipment zones (31c) to the passage zone (32c) while providing fresh respiratory substance to evacuating crew members.

[0166] The respirable substance spray unit (34c2) may be provided in at least one of the lower and upper portions of the passage area (32c). It may be preferable to provide the respirable substance spray unit (34c2) in the lower portion of the passage area (32c) to spray the respirable substance, for a reason similar to that of providing the multiple protective substance spray units (33c2) described above in the lower portion.

[0167] The respiratory substance supply line (30cL2) can connect the respiratory substance storage tank (34c1) and the respiratory substance injection unit (34c2).

[0168] The respiratory substance pressurization unit (34c3) can be provided on the respiratory substance supply line (30cL2).

[0169] The respiratory substance pressurization unit (34c3) can pressurize the respiratory substance in the respiratory substance storage tank (34c1) and supply it to the respiratory substance injection unit (34c2).

[0170] An on-off valve (30cV3) may be provided on the respiratory substance supply line (30cL2). The on-off valve (30cV3) may supply and block respiratory substances.

[0171] The above-mentioned respiratory substance pressurization unit (34c3) and opening / closing valve (30cV3) can be operated depending on whether a leak of toxic fuel is detected by the gas sensor (30cS).

[0172] The fuel processing system (30c) according to the third embodiment of the present invention may further include a vent section (8b) of the fuel processing system (30b) according to the second embodiment of the present invention described with reference to FIG. 4.

[0173] As described above in the second embodiment, the vent part (8b) is provided at the upper part of the fuel supply room (7) and can discharge the internal air of the fuel supply room (7) into the atmosphere.

[0174] This vent part (8b) can be forcibly operated depending on whether a leak of toxic fuel is detected by the gas sensor (30cS) of the third embodiment.

[0175] The gas sensor (30cS) operates the protective material supply unit (33c) and the respiratory material supply unit (34c) as well as the vent unit (8b) of the second embodiment simultaneously when toxic fuel leaks inside the fuel supply room (7).

[0176] When both the protective material and the breathing material are air, air can be shared and used from a single air supply unit (not shown) or engine combustion air delivered from an air utility line (not shown) can be used.

[0177] When using engine combustion air delivered from an air utility line as a protective material and a respiratory material, a filter (not shown) for removing contaminants may be provided in at least the respiratory material supply unit (34c) among the protective material supply unit (33c) and the respiratory material supply unit (34c) to remove contaminants such as lubricating oil that may be contained in the engine combustion air.

[0178] The fuel treatment system (30c) according to the third embodiment of the present invention sprays a protective substance through a protective substance spray unit (33c2) among a plurality of protective substance spray units (33c2) provided to surround the equipment area (31c) where the toxic fuel has leaked when toxic fuel leaks in at least one of the plurality of equipment areas (31c), and sprays fresh respiratory substance through a respiratory substance spray unit (34c2) provided in the passage area (32c), thereby preventing toxic fuel from spreading from the plurality of equipment areas (31c) to the passage area (32c) while providing fresh respiratory substance to evacuating crew members.

[0179]

[0180] FIGS. 8 to 11 are drawings for explaining various embodiments of a fuel processing system according to a fourth embodiment of the present invention, and FIG. 12 is a drawing for explaining a toxic fuel reduction unit of FIG. 10.

[0181] Referring to FIGS. 8 to 11, a fuel processing system (40d) according to a fourth embodiment of the present invention may include a fuel supply room (7) provided in a hull (2) and having a plurality of pieces of equipment for supplying toxic fuel to a demander (5), a dissolution unit (41d) for dissolving the toxic fuel by spraying a disaster prevention material onto a purging material or leak material containing the toxic fuel, a disaster prevention seal unit (42d) provided below the dissolution unit (41d) for storing the disaster prevention material and dissolving the toxic fuel in the stored disaster prevention material, and a wastewater tank (43d) for storing wastewater in which the toxic fuel is dissolved in the disaster prevention material.

[0182] In the fourth embodiment, the toxic fuel may be ammonia, the hazard substance may be water, and the wastewater may be ammonia water in which ammonia is dissolved in water.

[0183] In the above, the melting part (41d), the fire prevention seal part (42d) and the waste water tank (43d) can be formed as one piece in the vertical direction.

[0184] At this time, the fire prevention seal (42d) and the waste water tank (43d) may be arranged so that one side shares the side wall of the fuel supply room (7).

[0185] In the above, the toxic fuel included in the purging material or leaking material can flow into at least one of the melting part (41d) and the fire prevention seal part (42d).

[0186] At this time, the melting section (41d) is a space where the fire prevention material is sprayed from top to bottom, so low-pressure toxic fuel can flow in, and the fire prevention seal section (42d) is filled with the fire prevention material, and since the fire prevention material is sprayed from within the filled fire prevention material, high-pressure toxic fuel can flow in.

[0187] Referring to FIGS. 8 and 9, a wastewater tank (43d) can be provided in the hull (2), a disaster prevention seal part (42d) can be provided on the upper part of the wastewater tank (43d), and a dissolution part (41d) can be provided on the upper part of the disaster prevention seal part (42d).

[0188] When the disaster prevention seal part (42d) is placed on the upper part of the wastewater tank (43d) as described above, the wastewater can be stored in the wastewater tank (43d) by gravity falling through the wastewater drainage line (40dL1) connecting the disaster prevention seal part (42d) and the wastewater tank (43d).

[0189] Referring to Fig. 11, a disaster prevention seal part (42d) can be provided on the hull (2), a waste water tank (43d) can be provided on the upper part of the disaster prevention seal part (42d), and a dissolution part (41d) can be provided on the upper part of the disaster prevention seal part (42d), but can be provided by penetrating the waste water tank (43d) vertically.

[0190] When the disaster prevention seal part (42d) is placed at the bottom of the waste water tank (43d) as described above, the waste water can be stored in the waste water tank (43d) by a motor (40dM) provided on the waste water drainage line (40dL1) connecting the disaster prevention seal part (42d) and the waste water tank (43d).

[0191] Referring to FIG. 10, a fuel processing system (40d) according to a fourth embodiment of the present invention may further include a fire prevention material supply unit (44d) that supplies a fire prevention material to a melting unit (41d) and a fire prevention seal unit (42d) through a fire prevention material supply line (40dL2), a toxic fuel inlet unit (45d) that introduces toxic fuel into one of the melting unit (41d) and the fire prevention seal unit (42d) through a toxic fuel inlet line (40dL3), and a vent mast (9) that is provided in front of the fuel supply room (7) and discharges the toxic fuel into the atmosphere through a first toxic fuel vent line (40dL4).

[0192] In the above, the melting unit (41d) may include a space (41d1) for accommodating toxic fuel and a fire prevention material, and a fire prevention material spray unit (41d2) provided at the upper portion of the space (41d1) and spraying the fire prevention material supplied through the fire prevention material supply line (40dL2) into the space (41d1) to dissolve the toxic fuel. The melting unit (41d) may be a scrubber, but is not limited thereto.

[0193] In addition, the disaster prevention seal unit (42d) may include a disaster prevention material storage tank (42d1) that stores disaster prevention materials, and a toxic fuel injection unit (42d2) that is provided at the bottom of the disaster prevention material storage tank (42d1) and injects and dissolves toxic fuel introduced through the toxic fuel inlet line (40dL3) into the disaster prevention materials. The disaster prevention seal unit (42d) may be a water seal, but is not limited thereto.

[0194] In addition, the fuel processing system (40d) according to the fourth embodiment of the present invention may further include a disaster prevention material supply valve (40dV1) provided on a disaster prevention material supply line (40dL2), a first venting control valve (40dV2) provided on a first toxic fuel vent line (40dL4), and a concentration measuring sensor (40dS) provided on the first toxic fuel vent line (40dL4) upstream of the first venting control valve (40dV2) and configured to measure the concentration of toxic fuel vented through the first toxic fuel vent line (40dL4) and control the disaster prevention material supply valve (40dV1) and the first venting control valve (40dV2).

[0195] In the above, the concentration measuring sensor (40dS) can open the disaster prevention material supply valve (40dV1) and close the first venting control valve (40dV2) when the concentration of the toxic fuel vented through the first toxic fuel vent line (40dL4) exceeds a set stable concentration.

[0196] In addition, the concentration measuring sensor (40dS) can close the disaster prevention material supply valve (40dV1) and open the first venting control valve (40dV2) when the concentration of the toxic fuel vented through the first toxic fuel vent line (40dL4) is below a set stable concentration.

[0197] Here, the established stable concentration may be the concentration specified by the International Maritime Organization (IMO).

[0198] In addition, the fuel processing system (40d) according to the fourth embodiment of the present invention may further include a pressure valve (40dV3) that controls the internal pressure of the melting unit (41d) and the fire prevention seal unit (42d).

[0199] In the above, the pressure valve (40dV3) is a pressure reducing valve, and when the concentration of the toxic fuel vented through the first toxic fuel vent line (40dL4) exceeds a set stable concentration and the first venting control valve (40dV2) is closed by the concentration measuring sensor (40dS), the pressure can be gradually relieved by gradually opening when the internal pressure of the melting section (41d) and the fire prevention seal section (42d) rises above the set value.

[0200] In addition, the fuel treatment system (40d) according to the fourth embodiment of the present invention may further include a second toxic fuel vent line (40dL5) having one end connected to the wastewater tank (43d) and the other end connected to the first toxic fuel vent line (40dL4) to vent toxic fuel vaporization gas generated inside the wastewater tank (43d), a second venting control valve (40dV4) provided on the second toxic fuel vent line (40dL5), a third toxic fuel vent line (40dL6) having one end connected to the wastewater tank (43d) and the other end connected to the toxic fuel inlet line (40dL3) to vent toxic fuel vaporization gas generated inside the wastewater tank (43d), and a third venting control valve (40dV5) provided on the third toxic fuel vent line (40dL6).

[0201] At this time, if the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line (40dL5) exceeds the set stable concentration, the concentration measuring sensor (40dS) can close the second venting control valve (40dV4) and open the third venting control valve (40dV5).

[0202] In addition, the concentration measuring sensor (40dS) can open the second venting control valve (40dV4) and close the third venting control valve (40dV5) when the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line (40dL5) is below a set stable concentration.

[0203] In addition, the fuel processing system (40d) according to the fourth embodiment of the present invention may further include a toxic fuel reduction unit (46d) provided on the toxic fuel inflow line (40dL3) and reducing the amount of toxic fuel included in the purging material or leak material flowing into one of the dissolution unit (41d) and the disaster prevention seal unit (42d) from the toxic fuel inflow unit (45d).

[0204] Referring to FIG. 12, the toxic fuel reduction unit (46d) may include a reduction material storage tank (46d1) that stores reduction material, a mixing chamber (46d2) that is provided on a toxic fuel inlet line (40dL3) and mixes reduction material supplied from the reduction material storage tank (46d1) with toxic fuel supplied from the toxic fuel inlet line (40dL3), a reduction material injection unit (46d3) that is provided inside the mixing chamber (46d2) and injects reduction material, and a reduction material supply line (46d4) that connects the reduction material storage tank (46d1) and the reduction material injection unit (46d3).

[0205] In the above, the toxic fuel may be ammonia, and the reducing substance may be carbon dioxide.

[0206] Ammonia and carbon dioxide can chemically react in the mixing chamber (46d2) to form crystals of the ammonium carbonate series.

[0207] Accordingly, the amount of toxic fuel included in the purging material or leaking material can be reduced by the amount of toxic fuel flowing out of the mixing chamber (46d2) by the amount of toxic fuel consumed for the chemical reaction in the mixing chamber (46d2) compared to the amount of toxic fuel flowing into the mixing chamber (46d2).

[0208]

[0209] FIGS. 13 to 16 are drawings for explaining various embodiments of a fuel processing system according to a fifth embodiment of the present invention.

[0210] Referring to FIG. 13, a fuel processing system (50e) according to a fifth embodiment of the present invention may include a bunkering unit (10) provided on a hull (2) and connected to an external facility to transport toxic fuel, a drip tray unit (11) provided on the bunkering unit (10) to collect toxic fuel leaking from the bunkering unit (10), and a toxic fuel processing unit (51e) that processes the toxic fuel collected in the drip tray unit (11) into a disaster prevention material and then stores it in a ballast tank (12) located below the drip tray unit (11).

[0211] In a fifth embodiment, the toxic fuel may be ammonia and the hazard agent may be water.

[0212] In the above, the toxic fuel treatment unit (51e) may include a first disaster prevention material injection unit (51e1), a disaster prevention material supply unit (51e2), a disaster prevention material supply valve (50eV1), a first wastewater drain valve (50eV2), a first wastewater drain line (50eL2), and a leak detection sensor (50eS).

[0213] The first disaster prevention material spraying unit (51e1) can be provided above the drip tray unit (11) and can spray the disaster prevention material into the bunkering unit (10) where toxic fuel leaks.

[0214] The disaster prevention material supply unit (51e2) can supply the disaster prevention material to the first disaster prevention material injection unit (51e1) through the disaster prevention material supply line (50eL1).

[0215] The fire prevention material supply valve (50eV1) can be provided on the fire prevention material supply line (50eL1).

[0216] The first wastewater drainage line (50eL2) can drain wastewater temporarily stored in the drip tray (11) with toxic fuel dissolved in the disaster prevention material into the ballast tank (12).

[0217] The first wastewater drain valve (50eV2) may be provided on the first wastewater drain line (50eL2).

[0218] The leak detection sensor (50eS) can detect toxic fuel in the bunkering section (10).

[0219] In the above, when the leak detection sensor (50eS) detects toxic fuel, the fire extinguishing material supply valve (50eV1) can be opened to allow the fire extinguishing material to be sprayed through the first fire extinguishing material spray unit (51e1).

[0220] Additionally, when the leak detection sensor (50eS) detects toxic fuel, it can open the first wastewater drain valve (50eV2) to allow the wastewater to be stored in the ballast tank (12).

[0221] Referring to FIG. 14, a fuel processing system (50e) according to a fifth embodiment of the present invention may include a hold space (13) provided to surround a cargo tank (3) provided inside a hull (2), and a bilge well (14) provided in the hull (2).

[0222] At this time, the toxic fuel treatment unit (51e) may further include a second wastewater drainage line (50eL3) and a second wastewater drainage valve (50eV3).

[0223] The second wastewater drainage line (50eL3) can drain wastewater temporarily stored in the drip tray (11) with toxic fuel dissolved in the disaster prevention material into the bilge well (14).

[0224] It can be installed on the second wastewater drainage line (50eL3).

[0225] In the above, the second wastewater drain valve (50eV3) can be opened when toxic fuel is detected by the leak detection sensor (50eS) to allow wastewater to be stored in the bilge well (14).

[0226] Referring to FIG. 15, the fuel processing system (50e) according to the fifth embodiment of the present invention may include a wastewater tank (52e) provided in the hull (2).

[0227] At this time, the toxic fuel treatment unit (51e) may further include a third wastewater drainage line (50eL4) and a third wastewater drainage valve (50eV4).

[0228] The third wastewater drainage line (50eL4) can drain wastewater temporarily stored in the drip tray (11) with toxic fuel dissolved in the disaster prevention material into the wastewater tank (52e).

[0229] A third wastewater drain valve (50eV4) may be provided on the third wastewater drain line (50eL4).

[0230] In the above, the third wastewater drain valve (50eV4) can be opened when toxic fuel is detected by the leak detection sensor (50eS) to allow wastewater to be stored in the wastewater tank (52e).

[0231] In the fuel treatment system (50e) according to the fifth embodiment of the present invention described above, wastewater temporarily stored in the drip tray (11) or wastewater stored in at least one of the ballast tank (12), the bilge well (14) and the wastewater tank (52e) can be discharged overboard after being treated with a neutralizing agent until the concentration of toxic fuel contained in the wastewater reaches a set stable concentration.

[0232] Referring to FIG. 16, a fuel processing system (50e) according to a fifth embodiment of the present invention is provided in a hull (2), and when toxic fuel leaks from a cargo tank (3) storing toxic fuel into a hold space (13) and the internal pressure of the hold space (13) increases, a pressure control unit (53e) that operates to release the leaked toxic fuel to the outside and control the internal pressure of the hold space (13), and a wastewater storage unit (54e) may include a wastewater storage unit (54e) provided in the hull (2).

[0233] At this time, the toxic fuel treatment unit (51e) may further include a second disaster prevention material injection unit (51e3), a water barrier (51e4), and a fourth wastewater drainage line (50eL5).

[0234] The second disaster prevention material injection unit (51e3) can be arranged to surround the pressure control unit (53e), and can inject the disaster prevention material toward the pressure control unit (53e) when the pressure control unit (53e) is operated.

[0235] The water barrier (51e4) can induce wastewater containing toxic fuel dissolved in the disaster prevention material to flow down to the side plating (25) of the hull (2).

[0236] The fourth wastewater drainage line (50eL5) can drain wastewater guided through the cutoff wall (51e4) to the wastewater storage unit (54e).

[0237] In the above, the pressure control unit (53e) may be either a relief hatch or a pressure valve. Here, the pressure valve is a pressure reducing valve that gradually opens when the internal pressure of the hold space (13) rises above a set value, thereby gradually relieving the pressure.

[0238] The wastewater storage unit (54e) may be at least one of a ballast tank (12), a bilge well (14), and a wastewater tank (52e).

[0239] In addition, the fuel processing system (50e) according to the fifth embodiment of the present invention may include an overboard discharge unit (55e) that discharges wastewater stored in the wastewater storage unit (54e) to the outside.

[0240] At this time, the overboard discharge unit (55e) may include either a pump or an eductor.

[0241]

[0242] FIGS. 17 and 18 are drawings for explaining various embodiments of a fuel processing system according to a sixth embodiment of the present invention.

[0243] Referring to FIG. 17, a fuel processing system (60f) according to the sixth embodiment is provided in the hull (2), and may include a toxic fuel processing unit (61f) that processes toxic fuel into a disaster prevention substance, a wastewater storage unit (62f) that receives and stores wastewater in which toxic fuel is dissolved in a disaster prevention substance from the toxic fuel processing unit (61f), and an overboard discharge unit (63f) that discharges wastewater stored in the wastewater storage unit (62f) to the outside.

[0244] At this time, the overboard discharge unit (63f) can suck up the wastewater stored in the wastewater storage unit (62f) and discharge it to the outside by using the flow that discharges a separate disaster prevention material to the outside.

[0245] In the above, the wastewater storage unit (62f) may include a wastewater inflow line (60fL1), an evaporation gas discharge line (60fL2), and a wastewater transfer line (60fL3).

[0246] The wastewater inflow line (60fL1) is connected to the toxic fuel treatment unit (61f) and can receive wastewater from the toxic fuel treatment unit (61f).

[0247] The evaporation gas discharge line (60fL2) can transfer toxic fuel evaporation gas generated from wastewater stored in the wastewater storage unit (62f) to the toxic fuel treatment unit (61f).

[0248] The wastewater transport line (60fL3) is provided at the bottom of the wastewater storage unit (62f) and can transport the wastewater stored in the wastewater storage unit (62f) to another storage unit.

[0249] In the above, the overboard discharge unit (63f) may include an eductor (63f1), a wastewater discharge line (60fL4), a suppression water supply line (60fL5), a mixture discharge line (60fL6), and a suppression water supply valve (60fV2).

[0250] The wastewater discharge line (60fL4) is drawn from the inside of the wastewater storage unit (62f) to the outside of the wastewater storage unit (62f) and is connected to the side of the eductor (63f1), and can discharge wastewater from the wastewater storage unit (62f) to the outside.

[0251] The fire suppression water supply line (60fL5) is provided in the fire suppression unit (12a) of the first embodiment for suppressing a fire occurring in the hull (2), and is connected to the inlet of the eductor (63f1) to supply seawater.

[0252] The mixture discharge line (60fL6) is connected to the outlet of the eductor (63f1), and can discharge a mixture of wastewater sucked into the eductor (63f1) through the wastewater discharge line (60fL4) and seawater flowing into the eductor (63f1) through the suppression water supply line (60fL5) into the sea.

[0253] The pressure water supply valve (60fV2) may be provided on the waste water discharge valve (60fV1) provided on the waste water discharge line (60fL4) and the pressure water supply line (60fL5).

[0254] In the above, the fire prevention material may be water, the separate fire prevention material and suppression water may be seawater, and the mixture may have a toxic fuel contained in the wastewater diluted by seawater to have a concentration below a set stable concentration.

[0255] Additionally, the overboard discharge unit (63f) may include a first level sensor (60fS1) that measures the upper level of wastewater stored in the wastewater storage unit (62f) and a second level sensor (60fS2) that measures the lower level of wastewater stored in the wastewater storage unit (62f).

[0256] When the wastewater is filled to the upper level, the first level sensor (60fS1) detects this and opens the wastewater discharge valve (60fV1) and the pressure water supply valve (60fV2) to allow the wastewater to be discharged overboard.

[0257] Additionally, when the wastewater level decreases to a lower level, the second level sensor (60fS2) can detect this and close the wastewater discharge valve (60fV1) and the pressure water supply valve (60fV2).

[0258] The above-mentioned first level sensor (60fS1) and second level sensor (60fS2) can control the operation of the wastewater discharge valve (60fV1) and the pressurized water supply valve (60fV2) to prevent seawater supplied through the pressurized water supply valve (60fV2) from flowing into the wastewater storage unit (62f).

[0259] That is, the first level sensor (60fS1) can control the pressure water supply valve (60fV2) to open before the waste water discharge valve (60fV1).

[0260] Additionally, the second level sensor (60fS2) can control the wastewater discharge valve (60fV1) to close before the pressure water supply valve (60fV2).

[0261] Referring to FIG. 18, the overboard discharge unit (63f) may further include a wastewater discharge device (63f2) connected to a wastewater discharge line (60fL4).

[0262] In the above, the wastewater launch device (63f2) may include a wastewater launch line (60fL7) connected to a wastewater discharge line (60fL4), a pump (63f3) provided on the wastewater launch line (60fL7) and discharging wastewater to the outside, and a water gun (63f4) mounted at the end of the wastewater launch line (60fL7) and detachably configured on the upper deck (21) of the hull (2) to launch wastewater.

[0263]

[0264] FIG. 19 is a drawing for explaining a fuel processing system according to the seventh embodiment of the present invention.

[0265] Referring to FIG. 19, a fuel processing system (70g) according to a seventh embodiment of the present invention may include a bunkering unit (10) provided on a hull (2) and connected to an external facility to transport toxic fuel, a drip tray unit (11) provided on the bunkering unit (10) to collect toxic fuel leaking from the bunkering unit (10), a toxic fuel processing unit (71g) to process the toxic fuel collected in the drip tray unit (11) into a disaster prevention substance, and an overboard discharge unit (72g) to discharge wastewater temporarily stored in the drip tray unit (11) by dissolving the toxic fuel in the disaster prevention substance to the outside.

[0266] At this time, the overboard discharge unit (72g) can suck up the wastewater stored in the drip tray unit (11) and discharge it to the outside using the flow that discharges a separate disaster prevention material to the outside.

[0267] In the above, the toxic fuel treatment unit (71g) may include a disaster prevention material injection unit (71g1), a disaster prevention material supply unit (71g2), a disaster prevention material supply valve (70gV1), and a leak detection sensor (70gS).

[0268] The fire prevention material spraying unit (71g1) is provided above the drip tray unit (11) and can spray the fire prevention material into the bunkering unit (10) where toxic fuel is leaking.

[0269] The disaster prevention material supply unit (71g2) can supply disaster prevention material to the disaster prevention material spray unit (71g1) through the disaster prevention material supply line (70gL1).

[0270] The fire prevention material supply valve (70gV1) can be installed on the fire prevention material supply line (70gL1).

[0271] The leak detection sensor (70gS) detects toxic fuel in the bunkering section (10), and when toxic fuel is detected, the fire prevention material supply valve (70gV1) can be opened to allow the fire prevention material to be sprayed through the fire prevention material spray section (71g1).

[0272] In the above, the overboard discharge unit (72g) may include an eductor (71g3), a wastewater discharge line (70gL2), a suppression water supply line (70gL3), a mixture discharge line (70gL4), a wastewater discharge valve (70gV2), and a suppression water supply valve (70gV3).

[0273] The wastewater discharge line (70gL2) is drawn from the inside of the drip tray (11) to the outside of the drip tray (11) and is connected to the side of the eductor (71g3), and can discharge wastewater from the drip tray (11) to the outside.

[0274] The fire suppression water supply line (70gL3) is provided in the fire suppression unit (12a) of the first embodiment for suppressing a fire occurring in the hull (2), and is connected to the inlet of the eductor (71g3) to supply seawater.

[0275] The mixture discharge line (70gL4) is connected to the outlet of the eductor (71g3), and can discharge a mixture of wastewater sucked into the eductor (71g3) through the wastewater discharge line (70gL2) and seawater flowing into the eductor (71g3) through the suppression water supply line (70gL3) into the sea.

[0276] A wastewater discharge valve (70gV2) may be provided on the wastewater discharge line (70gL2).

[0277] A pressure relief valve (70gV3) can be installed on the pressure relief supply line (70gL3).

[0278]

[0279] FIG. 20 is a drawing for explaining a fuel processing system according to the eighth embodiment of the present invention.

[0280] Referring to FIG. 20, a fuel processing system (80h) according to the eighth embodiment of the present invention may include a vent mast (9) provided on a hull (2) for discharging a vent target material including toxic fuel into the atmosphere, a toxic fuel processing unit (81h) for processing the toxic fuel included in the vent target material by spraying a disaster prevention material toward a vent head (91) of the vent mast (9), and a wastewater tank (82h) for storing wastewater in which toxic fuel is dissolved in the disaster prevention material sprayed from the toxic fuel processing unit (81h).

[0281] At this time, the toxic fuel treatment unit (81h) may include a wastewater guide bar (81h1) that is provided to protrude from the outer surface of the vent discharge pipe (92) of the vent mast (9) and guides wastewater in which toxic fuel is dissolved in the disaster prevention material sprayed toward the vent head (91) to flow from the upper part to the lower part of the vent discharge pipe (92) and be stored in the wastewater tank (82h).

[0282] In the above, the toxic fuel may be ammonia and the fire extinguishing agent may be water.

[0283] In the above, the wastewater guide bar (81h1) may include a vertical guide bar (81h11) and an inclined guide bar (81h12).

[0284] One or more vertical guide bars (81h11) may be provided to extend from the top to the bottom of the vent discharge pipe (92).

[0285] The inclined guide bar (81h12) is connected to the vertical guide bar (81h11) and has a certain upward inclination, and can be provided in multiple numbers at a certain distance in the vertical direction on both sides of the vertical guide bar (81h11).

[0286] The wastewater in which toxic fuel is dissolved in the disaster prevention material sprayed from the toxic fuel treatment unit (81h) flows down the outer surface of the vent discharge pipe (92) and is then combined into a vertical guide bar (81h11) through a plurality of inclined guide bars (81h12) and delivered to the wastewater tank (82h).

[0287] This toxic fuel treatment unit (81h) may further include a wastewater collection tank (81h2), a wastewater drainage line (80hL1), a wastewater drainage valve (80hV1), and a pump (81h3).

[0288] The wastewater collection tank (81h2) is installed at the bottom of the vertical guide bar (81h11) and can temporarily store wastewater flowing down through the vertical guide bar (81h11).

[0289] The wastewater drain line (80hL1) can drain wastewater temporarily stored in the wastewater collection tank (81h2) into the wastewater tank (82h).

[0290] A wastewater drain valve (80hV1) may be provided on the wastewater drain line (80hL1).

[0291] The pump (81h3) can be installed on the wastewater drain line (80hL1).

[0292] In addition, the toxic fuel treatment unit (81h) may further include a first level sensor that measures the upper level of wastewater temporarily stored in the wastewater collection tank (81h2), although not shown, and a second level sensor that measures the lower level of wastewater temporarily stored in the wastewater collection tank (81h2).

[0293] At this time, when the wastewater is filled to the upper level, the first level sensor detects this and opens the wastewater drain valve (80hV1) and operates the pump (81h3) so that the wastewater is drained into the wastewater tank (82h).

[0294] When the wastewater level drops to a lower level, the second level sensor detects this and closes the wastewater drain valve (80hV1) and stops the operation of the pump (81h3).

[0295] In addition, the toxic fuel treatment unit (81h) may further include a disaster prevention material injection unit (81h4), a disaster prevention material supply unit (81h5), a disaster prevention material supply valve (80hV2), and a leak detection sensor (80hS).

[0296] The fire prevention material spray unit (81h4) can spray the fire prevention material onto the vent target material containing toxic fuel discharged through the vent head (91).

[0297] The disaster prevention material supply unit (81h5) can supply disaster prevention material to the disaster prevention material spray unit (81h4) through the disaster prevention material supply line (80hL2).

[0298] The fire prevention material supply valve (80hV2) can be installed on the fire prevention material supply line (80hL2).

[0299] The leak detection sensor (80hS) detects toxic fuel in the vent head (91), and when toxic fuel is detected, the fire extinguishing material supply valve (80hV2) is opened to allow the fire extinguishing material to be sprayed through the fire extinguishing material spray unit (81h4).

[0300] In the above, the disaster prevention material supply line (80hL2) connects the disaster prevention material supply unit (81h5) and the disaster prevention material injection unit (81h4), and can be fixedly installed in the vent discharge pipe (92).

[0301] In the above, the disaster prevention material injection part (81h4) is provided to be spaced a certain distance from the upper part of the vent head (91), but may be provided to surround the upper part of the vent head (91).

[0302] The vent head (91) may be provided with a cowl structure to prevent foreign substances from entering the vent discharge pipe (92) from the outside while allowing the vent target substance to be discharged laterally. In this case, the fire prevention substance injection part (81h4) may be provided in a hemispherical shape to surround the upper part of the vent head (91).

[0303] In addition, the toxic fuel treatment unit (81h) is installed on the upper part of the vent discharge pipe (92) and may further include a wastewater guide hopper (81h6) that allows the disaster prevention material sprayed from the disaster prevention material spray unit (81h4) to be collected on the outer surface of the vent discharge pipe (92) and flow to the wastewater guide bar (81h1).

[0304] In the above, the wastewater guide hopper (81h6) can be formed to be larger than the spraying range of the disaster prevention material sprayed from the disaster prevention material spraying unit (81h4).

[0305] The size of the wastewater guide hopper (81h6) may vary depending on the radius of curvature of the disaster prevention material injection part (81h4) having a hemispherical shape.

[0306] The fuel processing system (80h) according to the eighth embodiment of the present invention can safely process toxic fuel by dissolving it with a disaster prevention material in the toxic fuel processing unit (81h) before the vent target material containing toxic fuel is released into the atmosphere through the vent mast (9), thereby reducing air pollution and ensuring the safety of the crew.

[0307]

[0308] Although the present invention has been specifically described by dividing it into the first to eighth embodiments, it is clear that the present invention is not limited to each of the first to eighth embodiments, and that other embodiments that are modified or improved from each combination of the first to eighth embodiments or are implemented and expected as a combination of each of the first to eighth embodiments may also be included in the scope of the present invention.

[0309]

[0310] While the present invention has been described above with reference to embodiments thereof, these are merely examples and are not intended to limit the present invention. Those skilled in the art will appreciate that various combinations, modifications, and applications not illustrated in the embodiments are possible without departing from the essential technical content of the embodiments. Therefore, technical contents related to modifications and applications readily derivable from the embodiments of the present invention should be construed as being encompassed by the present invention.

Claims

A fuel supply room is provided on the hull and has multiple pieces of equipment to supply toxic fuel to the demand location; A dissolution unit that dissolves the toxic fuel by spraying a prevention material onto the purging material or leak material containing the toxic fuel; A fire prevention seal part provided at the lower part of the above melting part to store the fire prevention material and to dissolve the toxic fuel in the stored fire prevention material; and It includes a wastewater tank that stores wastewater in which the toxic fuel is dissolved in the above-mentioned disaster prevention material, The above melting part, the above fire prevention seal part and the above waste water tank, It is formed as one in the vertical direction, The above-mentioned disaster prevention seal and the above-mentioned wastewater tank, A fuel processing system, wherein one side is provided to share the side wall of the fuel supply room. In the first paragraph, A fire prevention material supply unit that supplies the above fire prevention material to the melting unit and the fire prevention seal unit through a fire prevention material supply line; A toxic fuel inlet for introducing the toxic fuel into one of the melting unit and the fire prevention seal unit through a toxic fuel inlet line; and It further includes a vent mast provided in front of the above fuel supply room and discharging the toxic fuel into the atmosphere through the first toxic fuel vent line. The above melting part is, A space for containing the above toxic fuel and the above disaster prevention material; and It includes a fire extinguishing material spraying unit provided on the upper part of the above space and spraying the fire extinguishing material supplied through the fire extinguishing material supply line into the above space to dissolve the toxic fuel, The above disaster prevention seal part is, A disaster prevention material storage tank for storing the above disaster prevention material; and A fuel processing system comprising a toxic fuel injection unit provided at the bottom of the above-mentioned disaster prevention material storage tank and injecting and dissolving the toxic fuel introduced through the toxic fuel introduction line into the above-mentioned disaster prevention material. In the second paragraph, A disaster prevention material supply valve provided on the above disaster prevention material supply line; A first venting control valve provided on the first toxic fuel vent line; and A fuel processing system further comprising a concentration measuring sensor provided on the first toxic fuel vent line upstream of the first venting control valve, the concentration measuring sensor measuring the concentration of the toxic fuel vented through the first toxic fuel vent line to control the disaster prevention material supply valve and the first venting control valve. In the third paragraph, the concentration measuring sensor, When the concentration of the toxic fuel vented through the first toxic fuel vent line exceeds the set stable concentration, the disaster prevention material supply valve is opened and the first venting control valve is closed. If the concentration of the toxic fuel vented through the first toxic fuel vent line is lower than the set stable concentration, the disaster prevention material supply valve is closed and the first venting control valve is opened. The above melting part and the above fire prevention seal part, The internal pressure is controlled by the pressure valve, The above pressure valve, A fuel processing system in which, when the concentration of the toxic fuel vented through the first toxic fuel vent line exceeds the set stable concentration and the first venting control valve is closed by the concentration measuring sensor, the pressure reducing valve gradually opens and gradually relieves the pressure when the internal pressure of the melting unit and the fire prevention seal unit rises above the set value. In the third paragraph, A second toxic fuel vent line, one end of which is connected to the wastewater tank and the other end of which is connected to the first toxic fuel vent line, for venting toxic fuel vapor gas generated inside the wastewater tank; A second venting control valve provided on the second toxic fuel vent line; A third toxic fuel vent line, one end of which is connected to the wastewater tank and the other end of which is connected to the toxic fuel inlet line, for venting the toxic fuel vapor gas generated inside the wastewater tank; and Further comprising a third venting control valve provided on the third toxic fuel vent line, The above concentration measuring sensor, When the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line exceeds the set stable concentration, the second venting control valve is closed and the third venting control valve is opened. A fuel processing system that opens the second venting control valve and closes the third venting control valve when the concentration of the toxic fuel evaporation gas vented through the second toxic fuel vent line is lower than the set stable concentration. A bunkering section installed on the hull and connected to external facilities to transport toxic fuel; A drip tray provided in the above bunkering section and configured to collect the toxic fuel leaking from the bunkering section; and A fuel processing system including a toxic fuel processing unit that processes the toxic fuel captured in the drip tray into a disaster prevention material and then stores it in a ballast tank located below the drip tray. In the sixth paragraph, the toxic fuel treatment unit, A first disaster prevention material spraying unit provided above the drip tray unit and spraying the disaster prevention material into the bunkering unit where the toxic fuel leaks; A disaster prevention material supply unit that supplies the disaster prevention material to the first disaster prevention material spray unit through a disaster prevention material supply line; A disaster prevention material supply valve provided on the above disaster prevention material supply line; A first wastewater drainage line for dissolving the toxic fuel in the above disaster prevention material and temporarily storing wastewater in the drip tray to drain the wastewater to the ballast tank; A first wastewater drain valve provided on the first wastewater drain line; and A fuel processing system comprising a leak detection sensor that detects the toxic fuel in the bunkering section. In the seventh paragraph, the leak detection sensor, If the above toxic fuel is detected, Open the above-mentioned disaster prevention material supply valve so that the disaster prevention material is sprayed through the first disaster prevention material spraying unit, A fuel treatment system that opens the first wastewater drain valve so that the wastewater is stored in the ballast tank. In paragraph 7, A hold space provided to surround a cargo tank provided inside the hull; and Including a bilge well provided in the above hull, The above toxic fuel treatment unit is, A second wastewater drainage line for dissolving the toxic fuel in the disaster prevention material and temporarily storing the wastewater in the drip tray to drain it into the bilge well; and Further comprising a second wastewater drain valve provided on the second wastewater drain line, The above second wastewater drain valve, A fuel treatment system that opens when the toxic fuel is detected by the leak detection sensor, allowing the wastewater to be stored in the bilge well. In paragraph 9, A pressure control unit provided on the hull, which operates to release the leaked toxic fuel to the outside when the toxic fuel leaks from the cargo tank storing the toxic fuel into the hold space and the internal pressure of the hold space increases, thereby controlling the internal pressure of the hold space; and Including a wastewater storage unit provided in the above hull, The above toxic fuel treatment unit is, A second fire prevention material spraying unit configured to surround the pressure control unit and spray the fire prevention material toward the pressure control unit when the pressure control unit is operated; A water barrier that induces the wastewater in which the toxic fuel is dissolved in the above-mentioned disaster prevention material to flow down the side plating of the hull; and A fuel treatment system further comprising a fourth wastewater drainage line for draining the wastewater introduced through the above-mentioned water barrier into the wastewater storage unit. A toxic fuel treatment unit installed on the hull to treat toxic fuel into a disaster prevention substance; A wastewater storage unit that receives and stores wastewater in which the toxic fuel is dissolved in the disaster prevention material from the toxic fuel treatment unit; and It includes an overboard discharge unit that discharges the above waste water to the outside, The above overboard discharge unit is, A fuel treatment system that is connected to the above-mentioned wastewater storage unit and uses a flow that discharges a separate disaster prevention material to the outside to suck up the wastewater stored in the above-mentioned wastewater storage unit and discharge it to the outside. In the 11th paragraph, the wastewater storage unit, A wastewater inflow line connected to the above toxic fuel treatment unit and receiving the wastewater from the above toxic fuel treatment unit; An evaporation gas discharge line that transfers toxic fuel evaporation gas generated from wastewater stored in the above wastewater storage unit to the above toxic fuel treatment unit; and A fuel treatment system comprising a wastewater transfer line provided at the lower portion of the wastewater storage unit and transferring the wastewater stored in the wastewater storage unit to another storage unit. In the 12th paragraph, the overboard discharge unit, eductor; A wastewater discharge line that is drawn from the inside of the wastewater storage unit to the outside of the wastewater storage unit and connected to the side of the eductor, and discharges the wastewater from the wastewater storage unit to the outside; A fire suppression unit provided for suppressing a fire occurring in the above hull, and a fire suppression water supply line connected to the inlet of the eductor to supply seawater; A mixture discharge line connected to the outlet of the eductor and discharging a mixture of the wastewater sucked into the eductor through the wastewater discharge line and the seawater flowing into the eductor through the pressure water supply line into the sea; A wastewater discharge valve provided on the above wastewater discharge line; and A fuel processing system including a pressure water supply valve provided on the pressure water supply line. In Article 11, A bunkering section provided on the above hull and connected to external facilities, for transporting the toxic fuel; A drip tray provided in the above bunkering section and configured to collect the toxic fuel leaking from the bunkering section; and Further comprising the toxic fuel treatment unit that treats the toxic fuel captured in the drip tray with the disaster prevention material, The above overboard discharge unit is, A fuel treatment system that is connected to the above drip tray and uses a flow that discharges a separate fire extinguishing material to the outside, and sucks up wastewater temporarily stored in the drip tray by dissolving the toxic fuel in the fire extinguishing material and discharges it to the outside. In the 14th paragraph, the toxic fuel treatment unit, A fire prevention material spraying unit provided above the drip tray unit and spraying the fire prevention material into the bunkering unit where the toxic fuel leaks; A disaster prevention material supply unit that supplies the disaster prevention material to the disaster prevention material spray unit through a disaster prevention material supply line; A disaster prevention material supply valve provided on the above disaster prevention material supply line; and A fuel processing system comprising a leak detection sensor that detects the toxic fuel in the bunkering section and, when the toxic fuel is detected, opens the hazard substance supply valve to allow the hazard substance to be sprayed through the hazard substance spray section.

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